/* EngNote Lớp học: chuyển từ bản mẫu engnote-lms-2.html (cùng token màu / kiểu chữ), thêm thành phần cho trình học, trình soạn và quản trị ở cuối tệp. */
/* Layout: grouped sidebar + sticky top bar; every page = header → sections; each section = title row + card(s).
   Long forms use a two-column "settings" pattern: label & explanation left, fields right. Light theme only. */
:root{
  color-scheme:light;
  --bg:#F4F6F4; --surface:#FFFFFF; --subtle:#F8FAF8; --tint:#EFF3F0;
  --ink:#142019; --ink-2:#34423A; --muted:#53635B; --line:#E1E7E2; --line-2:#ECF0ED; --line-strong:#CDD7D0;
  --brand:#1F4A37; --brand-hover:#2A5D46; --brand-soft:#E5EFE9; --brand-ink:#FFFFFF;
  --accent:#E9A93A; --accent-soft:#FDF3DF; --accent-ink:#4A3104;
  --ok:#1D7A45; --ok-soft:#E3F3E8; --warn:#8A5A00; --warn-soft:#FDF3DF; --bad:#B42318; --bad-soft:#FDECEA; --info:#2457A6; --info-soft:#E7EEF9;
  --off:#8A4310; --off-soft:#FBEBDA; --live:#2457A6; --live-soft:#E7EEF9; --self:#1D7A45; --self-soft:#E3F3E8;
  --ink-red:#C2261B; --paper:#FFFDF7; --paper-line:#DCE5F2;
  --r:14px; --r-sm:10px;
  --sh:0 1px 2px rgba(16,32,24,.04),0 1px 1px rgba(16,32,24,.03);
  --sh-lg:0 12px 32px rgba(16,32,24,.10);
  --f-display:"Lexend",system-ui,sans-serif;
  --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --f-hand:"Caveat","Segoe Print",cursive;
}
[hidden]{display:none!important}
*{box-sizing:border-box}
html,body{background:var(--bg)}
body{color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.6;margin:0;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--surface)}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.25;margin:0;text-wrap:balance;letter-spacing:-.012em;font-weight:600;color:var(--ink)}
h1{font-size:clamp(24px,2.8vw,30px)}
h2{font-size:17px}
h3{font-size:15px}
p{margin:0}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
svg.i{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
svg.i.sm{width:15px;height:15px}
.muted{color:var(--muted)} .small{font-size:13px} .xs{font-size:12px}
.label-up{font-size:11.5px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.mono{font-family:var(--f-mono);font-size:12.5px;font-variant-numeric:tabular-nums}
.num{font-variant-numeric:tabular-nums}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.col{display:flex;flex-direction:column;gap:16px;min-width:0}
.spacer{flex:1}
.sample{display:inline-flex;gap:6px;align-items:center;font-size:12px;color:var(--muted);border:1px dashed var(--line-strong);border-radius:999px;padding:2px 10px;white-space:nowrap}

/* ---------- controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:0 16px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface);font-weight:600;font-size:14px;cursor:pointer;text-decoration:none;white-space:nowrap;color:var(--ink);box-shadow:var(--sh)}
.btn:hover{background:var(--subtle)}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.primary:hover{background:var(--brand-hover)}
.btn.accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.ghost{border-color:transparent;background:transparent;box-shadow:none}
.btn.ghost:hover{background:var(--tint)}
.btn.sm{min-height:34px;padding:0 12px;font-size:13px;border-radius:8px}
.btn.icon{width:40px;padding:0}
.btn.icon.sm{width:34px}
.btn.danger{background:var(--surface);color:var(--bad);border-color:#EBC3BE}
.btn.danger:hover{background:var(--bad-soft)}
.btn.danger.solid{background:var(--bad);color:#FFFFFF;border-color:var(--bad)}
.btn.block{width:100%}
.btn.lg{min-height:48px;padding:0 22px;font-size:15px;border-radius:12px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;pointer-events:none}
/* Bộ control chuẩn cho mọi biểu mẫu: .field (nhãn → ô → gợi ý / lỗi), .form-grid, .input-group, .check, .form-actions.
   Ô nhập, chọn, tệp, hộp kiểm dùng chung chiều cao 40px, viền, bo góc và trạng thái tập trung / lỗi / tắt. */
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field>label,.lbl{font-size:13px;font-weight:600;color:var(--ink-2)}
.field>label.req::after,.lbl.req::after{content:" *";color:var(--bad);font-weight:700}
.hint{font-size:12px;color:var(--muted)}
.err-msg{font-size:12px;color:var(--bad);font-weight:500}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=time],input[type=search],input[type=url],input[type=tel],input[type=datetime-local],input[type=month],input:not([type]),select,textarea{
  width:100%;min-height:40px;padding:8px 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink);font-size:14px;transition:border-color .12s,box-shadow .12s}
input::placeholder,textarea::placeholder{color:#8A978F}
input:hover:not(:disabled):not(:focus),select:hover:not(:disabled):not(:focus),textarea:hover:not(:disabled):not(:focus){border-color:#B5C2B9}
input:focus,select:focus,textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px var(--brand-soft)}
input:disabled,select:disabled,textarea:disabled,input[readonly],textarea[readonly]{background:var(--subtle);color:var(--muted);cursor:not-allowed}
.field.has-err input,.field.has-err select,.field.has-err textarea,input[aria-invalid="true"],select[aria-invalid="true"],textarea[aria-invalid="true"]{border-color:var(--bad);box-shadow:0 0 0 3px var(--bad-soft)}
select{appearance:none;-webkit-appearance:none;padding-right:34px;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2353635B' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center}
select[multiple]{background-image:none;padding-right:12px}
select.auto,input.auto{width:auto}
textarea{min-height:88px;resize:vertical;line-height:1.55}
input[type=file]{width:100%;font-size:13px;color:var(--muted);border:1px dashed var(--line-strong);border-radius:10px;padding:6px;background:var(--subtle);cursor:pointer}
input[type=file]::file-selector-button{font:inherit;font-weight:600;font-size:13px;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:8px;padding:6px 12px;margin-right:10px;cursor:pointer}
input[type=file]:hover::file-selector-button{background:var(--tint)}
input[type=checkbox],input[type=radio]{accent-color:var(--brand);width:17px;height:17px;margin:0;flex:none;cursor:pointer}
input[type=range]{accent-color:var(--brand);width:100%}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;cursor:pointer;line-height:1.45}
.check input{margin-top:2px}
.check small{display:block;color:var(--muted);font-size:12.5px}
.checks{display:flex;flex-direction:column;gap:10px}
.checks.inline{flex-direction:row;flex-wrap:wrap;gap:10px 20px}
.input-group{display:flex;align-items:stretch;min-width:0}
.input-group>input,.input-group>select{flex:1;min-width:0;border-radius:0}
.input-group>:first-child{border-top-left-radius:10px;border-bottom-left-radius:10px}
.input-group>:last-child{border-top-right-radius:10px;border-bottom-right-radius:10px}
.input-group>.addon{display:flex;align-items:center;padding:0 12px;border:1px solid var(--line-strong);background:var(--subtle);color:var(--muted);font-size:13px;white-space:nowrap}
.input-group>.addon:first-child{border-right:0}
.input-group>.addon:last-child{border-left:0}
.input-group>.btn{border-radius:0;box-shadow:none}
.form{display:flex;flex-direction:column;gap:16px;min-width:0}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:16px}
.form-grid>.span-all{grid-column:1/-1}
.form-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding-top:4px}
.form-actions.end{justify-content:flex-end}
.form-actions.sticky{position:sticky;bottom:0;z-index:5;background:linear-gradient(to top,var(--bg) 70%,transparent);padding-block:14px calc(10px + env(safe-area-inset-bottom,0px))}
fieldset.fs{border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 16px 16px;margin:0;min-width:0;display:flex;flex-direction:column;gap:14px}
fieldset.fs>legend{padding:0 6px;font-size:13px;font-weight:600;color:var(--ink-2)}
.searchbox{position:relative}
.searchbox svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--muted)}
.searchbox input{padding-left:34px}
.g2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.g3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:720px){.g2,.g3{grid-template-columns:minmax(0,1fr)}}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--line-strong);background:var(--surface);font-size:13px;font-weight:500;cursor:pointer;color:var(--ink-2)}
.chip:hover{background:var(--subtle)}
.chip[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.chip .n{font-size:11px;font-weight:700;opacity:.75}
.switch{display:flex;align-items:flex-start;gap:12px;cursor:pointer}
.switch input{appearance:none;flex:none;width:38px;height:22px;border-radius:999px;background:#C5CFC8;position:relative;cursor:pointer;margin:1px 0 0;transition:background .15s}
.switch input::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#FFFFFF;transition:transform .15s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.switch input:checked{background:var(--brand)}
.switch input:checked::after{transform:translateX(16px)}
.switch b{display:block;font-weight:600;font-size:13.5px}
.switch small{color:var(--muted);font-size:12.5px}
.seg{display:inline-flex;padding:3px;border-radius:10px;background:var(--tint);gap:2px}
.seg button,.seg a{border:0;background:transparent;padding:6px 14px;font-weight:600;font-size:13px;cursor:pointer;border-radius:8px;color:var(--muted);text-decoration:none;white-space:nowrap}
.seg [aria-pressed="true"],.seg [aria-current="page"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(16,32,24,.12)}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:2px 9px;border-radius:999px;white-space:nowrap;line-height:1.6}
.tag.dot::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.t-off{background:var(--off-soft);color:var(--off)} .t-live{background:var(--live-soft);color:var(--live)} .t-self{background:var(--self-soft);color:var(--self)}
.t-mute{background:var(--tint);color:var(--muted)} .t-info{background:var(--info-soft);color:var(--info)} .t-warn{background:var(--warn-soft);color:var(--warn)} .t-ok{background:var(--ok-soft);color:var(--ok)} .t-bad{background:var(--bad-soft);color:var(--bad)}
.cefr{font-family:var(--f-mono);font-size:11.5px;border:1px solid var(--line-strong);border-radius:6px;padding:1px 6px;background:var(--surface);white-space:nowrap;color:var(--ink-2)}
[data-icon]{display:inline-flex;align-items:center}
.bar{height:6px;border-radius:999px;background:var(--tint);overflow:hidden;min-width:60px}
.bar i{display:block;height:100%;background:var(--brand);border-radius:999px}
.bar.amber i{background:var(--accent)}
.ico{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;flex:none;background:var(--tint);color:var(--ink-2)}
.ico.green{background:var(--ok-soft);color:var(--ok)} .ico.blue{background:var(--info-soft);color:var(--info)} .ico.amber{background:var(--warn-soft);color:var(--warn)} .ico.red{background:var(--bad-soft);color:var(--bad)} .ico.brand{background:var(--brand);color:var(--brand-ink)}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-family:var(--f-display);font-weight:600;font-size:13px;flex:none}
.avatar.lg{width:48px;height:48px;font-size:16px}
.empty{padding:28px;text-align:center;color:var(--muted);border:1px dashed var(--line-strong);border-radius:12px;font-size:13.5px}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:#FFFFFF;padding:10px 16px;border-radius:10px;font-size:13.5px;font-weight:500;box-shadow:var(--sh-lg);z-index:80;max-width:calc(100% - 32px)}

/* ---------- cards & sections ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);min-width:0}
.card-h{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line-2);flex-wrap:wrap;min-height:56px}
.card-h h3{display:flex;align-items:center;gap:8px}
.card-h .count{font-size:12px;font-weight:600;color:var(--muted);background:var(--tint);border-radius:999px;padding:1px 8px}
.card-b{padding:18px}
.card-f{padding:12px 18px;border-top:1px solid var(--line-2);display:flex;gap:10px;align-items:center;flex-wrap:wrap;background:var(--subtle);border-radius:0 0 var(--r) var(--r)}
.section{display:flex;flex-direction:column;gap:12px;min-width:0}
.section-h{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap}
.section-h p{font-size:13px;color:var(--muted);margin-top:2px}
.page{display:flex;flex-direction:column;gap:28px;min-width:0}
@media (prefers-reduced-motion:no-preference){.page{animation:in .2s ease-out}@keyframes in{from{opacity:.4;transform:translateY(3px)}to{opacity:1;transform:none}}}
.page-h{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-end}
.page-h .over{font-size:12.5px;color:var(--muted);font-weight:500;margin-bottom:4px;display:flex;gap:8px;align-items:center}
.page-h .sub{color:var(--muted);margin-top:4px;font-size:13.5px}
.settings{display:flex;flex-direction:column}
.sg{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px;padding-block:26px;border-top:1px solid var(--line)}
.sg:first-child{border-top:0;padding-top:4px}
.sg-l{display:flex;flex-direction:column;gap:6px}
.sg-l p{font-size:13px;color:var(--muted)}
.sg-r{display:flex;flex-direction:column;gap:16px;min-width:0}
@media (max-width:1100px){.sg{grid-template-columns:minmax(0,1fr);gap:14px}}
.table-box{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:700px;font-size:13.5px}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line-2);vertical-align:middle}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600;background:var(--subtle);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tr.link{cursor:pointer}
tr.link:hover td{background:var(--subtle)}
td .t{font-weight:600}
td .s{font-size:12px;color:var(--muted)}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:1000px){.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
.kpi{padding:16px 18px;display:flex;gap:14px;align-items:flex-start}
.kpi b{display:block;font-family:var(--f-display);font-size:24px;font-weight:600;line-height:1.15;font-variant-numeric:tabular-nums}
.kpi .k{font-size:12.5px;color:var(--muted);font-weight:500}
.kpi .d{font-size:12px;font-weight:600;margin-top:2px}
.strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}
.strip > div{padding:14px 18px;border-left:1px solid var(--line-2);display:flex;flex-direction:column;gap:2px;min-width:0}
.strip > div:first-child{border-left:0}
.strip b{font-family:var(--f-display);font-size:16px;font-weight:600;font-variant-numeric:tabular-nums}
@media (max-width:900px){.strip{grid-template-columns:repeat(2,minmax(0,1fr))}.strip>div{border-left:0;border-top:1px solid var(--line-2)}.strip>div:nth-child(-n+2){border-top:0}}
.alert{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border-radius:12px;font-size:13.5px;border:1px solid}
.alert.warn{background:var(--warn-soft);border-color:#F2DDB0}
.alert.warn svg{color:var(--warn)}
.alert.info{background:var(--info-soft);border-color:#C9D8F0}
.alert.info svg{color:var(--info)}
.alert.ok{background:var(--ok-soft);border-color:#BFE2CB}
.alert.ok svg{color:var(--ok)}
.alert.bad{background:var(--bad-soft);border-color:#F1C4BF}
.alert.bad svg{color:var(--bad)}
/* phân trang dùng chung (Pager.cs) */
.pager{display:flex;justify-content:space-between;align-items:center;gap:10px 16px;flex-wrap:wrap;padding-top:4px}
.pager .pg-sum{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.pager .pg-btns{display:flex;gap:4px;flex-wrap:wrap;align-items:center}
.pager .pg{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border-radius:9px;border:1px solid var(--line-strong);background:var(--surface);text-decoration:none;font-size:13.5px;font-weight:600;color:var(--ink-2);font-variant-numeric:tabular-nums}
.pager a.pg:hover{background:var(--tint)}
.pager .pg[aria-current="page"]{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.pager .pg.off{opacity:.4}
.pager .pg-gap{padding:0 4px;color:var(--muted)}

/* ---------- public ---------- */
.pub-top{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.wrap{max-width:1200px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.pub-top .wrap{display:flex;align-items:center;gap:20px;min-height:62px;flex-wrap:wrap;padding-block:8px}
.pub-nav{display:flex;gap:2px;flex-wrap:wrap}
.pub-nav a{text-decoration:none;padding:7px 12px;border-radius:8px;color:var(--muted);font-weight:500;font-size:14px}
.pub-nav a:hover{color:var(--ink);background:var(--tint)}
.pub-nav a[aria-current="page"]{color:var(--ink);background:var(--tint)}
.pub-main{padding-block:32px 72px}
.pub-foot{border-top:1px solid var(--line);background:var(--surface)}
.pub-foot .wrap{padding-block:22px;display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between;font-size:13px;color:var(--muted)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--f-display);font-weight:600;font-size:15.5px;color:var(--ink)}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-size:15px;font-weight:600;flex:none}
.logo small{font-family:var(--f-body);font-weight:500;color:var(--muted);font-size:11.5px;display:block;line-height:1.1}
.hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px;align-items:center;padding-block:8px 8px}
@media (max-width:900px){.hero{grid-template-columns:minmax(0,1fr);gap:20px}}
.hero h1{font-size:clamp(28px,3.8vw,40px);line-height:1.15}
.lead{font-size:16px;color:var(--muted);max-width:56ch}
.modes{display:grid;gap:0}
.mode{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:center;padding:14px 18px;border-top:1px solid var(--line-2)}
.mode:first-child{border-top:0}
.mode b{font-size:14px;display:block}
.mode p{font-size:13px;color:var(--muted)}
.filterbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:12px 14px}
.filterbar .searchbox{flex:1 1 220px;max-width:340px}
.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.ccard{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);overflow:hidden;transition:box-shadow .15s,transform .15s}
.ccard:hover{box-shadow:var(--sh-lg);transform:translateY(-1px)}
.cover{height:104px;position:relative;padding:12px 14px;display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid var(--line-2)}
.cover canvas{position:absolute;inset:0;width:100%;height:100%}
.cover > *{position:relative}
.ccard .body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:10px 0;border-block:1px solid var(--line-2)}
.facts div{display:flex;flex-direction:column}
.facts span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.facts b{font-size:13px;font-weight:600}
.ccard .foot{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 16px 16px;flex-wrap:wrap}
.price{font-weight:700;font-variant-numeric:tabular-nums}
.trial{font-size:12px;font-weight:600;color:var(--ok)}
.detail{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:28px;align-items:start}
@media (max-width:960px){.detail{grid-template-columns:minmax(0,1fr)}}
.crumbs{display:flex;gap:6px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);min-width:0}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs .cur{color:var(--ink);font-weight:600}
.outcomes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px;padding:0;margin:0;list-style:none}
@media (max-width:640px){.outcomes{grid-template-columns:minmax(0,1fr)}}
.outcomes li{display:flex;gap:10px;font-size:14px}
.outcomes li svg{color:var(--ok);margin-top:2px}
details.wk{border-top:1px solid var(--line-2)}
details.wk:first-child{border-top:0}
details.wk summary{cursor:pointer;padding:14px 18px;display:flex;gap:10px;align-items:center;font-family:var(--f-display);font-weight:600;list-style:none}
details.wk summary::-webkit-details-marker{display:none}
details.wk summary .chev{margin-left:auto;transition:transform .15s;color:var(--muted)}
details.wk[open] summary .chev{transform:rotate(180deg)}
.wk-list{padding:0 18px 12px}
.wk-item{display:grid;grid-template-columns:32px minmax(0,1fr) auto;gap:12px;align-items:center;padding:8px 0;font-size:13.5px}
.buy{position:sticky;top:84px}
.cls{display:flex;gap:12px;align-items:flex-start;padding:12px;border:1px solid var(--line-strong);border-radius:10px;cursor:pointer}
.cls:has(input:checked){border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.cls input{margin-top:4px;accent-color:var(--brand)}
.auth{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,430px);gap:40px;align-items:start}
@media (max-width:900px){.auth{grid-template-columns:minmax(0,1fr)}}
.roles{display:grid;gap:10px}
.role{display:flex;gap:14px;align-items:center;text-align:left;padding:14px 16px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface);cursor:pointer;width:100%;color:var(--ink)}
.role[aria-pressed="true"]{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.role[aria-pressed="true"] .ico{background:var(--brand);color:var(--brand-ink)}
.role b{display:block;font-weight:600}
.role small{color:var(--muted);font-size:13px}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.invite{background:var(--brand);color:#FFFFFF;border-radius:var(--r);padding:26px;display:flex;flex-direction:column;gap:16px}
.invite h1{color:#FFFFFF}
.invite .kv dt{color:#B9D2C3}
.invite .kv dd{color:#FFFFFF}
.invite .note{background:rgba(255,255,255,.1);border-radius:10px;padding:12px 14px;font-size:13px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:13.5px;margin:0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums;text-align:right}

/* ---------- app shell ---------- */
.app{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:20px;padding:16px 12px calc(16px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px))}
.side .logo{padding:2px 6px 6px}
.ws{display:flex;gap:10px;align-items:center;padding:9px 10px;border:1px solid var(--line);border-radius:10px;background:var(--subtle)}
.ws b{display:block;font-size:13px}
.ws small{font-size:11.5px;color:var(--muted)}
.ngroup{display:flex;flex-direction:column;gap:1px}
.ngroup .label-up{padding:0 10px 6px;font-size:10.5px}
.nav-a{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;text-decoration:none;color:var(--ink-2);font-weight:500;font-size:14px}
.nav-a svg{color:var(--muted)}
.nav-a:hover{background:var(--tint)}
.nav-a[aria-current="page"]{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-a[aria-current="page"] svg{color:var(--brand)}
.nav-a .badge{margin-left:auto;background:var(--accent);color:var(--accent-ink);font-size:11px;font-weight:700;border-radius:999px;padding:0 7px;font-variant-numeric:tabular-nums}
.nav-a .ext{margin-left:auto}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);padding-top:14px}
.me{display:flex;gap:10px;align-items:center;padding:0 4px}
.me b{display:block;font-size:13.5px}
.me small{color:var(--muted);font-size:12px}
.app-main{display:flex;flex-direction:column;min-width:0}
.app-top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(244,246,244,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.app-top .in{display:flex;align-items:center;gap:12px;min-height:56px;padding-block:8px;padding-left:max(28px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px))}
.app-top .searchbox{width:260px}
.app-body{padding-block:24px 72px;padding-left:max(28px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px));width:100%;min-width:0}
.menu-btn{display:none}
.scrim{display:none}
@media (max-width:980px){
  .app{grid-template-columns:minmax(0,1fr)}
  .side{position:fixed;inset:0 auto 0 0;width:min(288px,86vw);z-index:50;transform:translateX(-102%);transition:transform .2s;box-shadow:var(--sh-lg);padding-top:calc(16px + env(safe-area-inset-top,0px))}
  .app.open .side{transform:none}
  .app.open .scrim{display:block;position:fixed;inset:0;background:rgba(20,32,25,.35);z-index:40}
  .menu-btn{display:inline-flex}
  .app-top .searchbox{display:none}
  .app-top .in,.app-body{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
}

/* ---------- dashboard ---------- */
.two{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:1150px){.two{grid-template-columns:minmax(0,1fr)}}
.agenda .day{padding:10px 18px 4px;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;background:var(--subtle);border-top:1px solid var(--line-2)}
.agenda .day:first-child{border-top:0;border-radius:var(--r) var(--r) 0 0}
.ag{display:grid;grid-template-columns:86px minmax(0,1fr) auto;gap:14px;align-items:center;padding:12px 18px;border-top:1px solid var(--line-2)}
.ag .time{font-family:var(--f-mono);font-size:12.5px;color:var(--ink-2)}
.ag .t{font-weight:600}
.ag .s{font-size:12.5px;color:var(--muted)}
.todo{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;padding:14px 18px;border-top:1px solid var(--line-2)}
.todo:first-child{border-top:0}
.todo .t{font-weight:600}
.todo .s{font-size:13px;color:var(--muted)}
.todo .row{margin-top:8px}

/* ---------- builder ---------- */
.builder{display:grid;grid-template-columns:300px minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:1150px){.builder{grid-template-columns:minmax(0,1fr)}}
.outline{position:sticky;top:76px;max-height:calc(100vh - 100px);overflow:auto}
@media (max-width:1150px){.outline{position:static;max-height:none}}
.week{padding:10px 10px 12px;border-top:1px solid var(--line-2)}
.week:first-child{border-top:0}
.week-h{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 8px}
.week-h b{font-family:var(--f-display);font-weight:600;font-size:13.5px}
.sess{display:grid;grid-template-columns:26px minmax(0,1fr) auto;gap:10px;align-items:center;width:100%;text-align:left;padding:8px;border-radius:9px;border:1px solid transparent;background:transparent;cursor:pointer;color:var(--ink)}
.sess:hover{background:var(--tint)}
.sess[aria-current="true"]{background:var(--brand-soft);border-color:#C9DBD0}
.sess .n{width:26px;height:26px;border-radius:7px;display:grid;place-items:center;background:var(--tint);font-family:var(--f-mono);font-size:11.5px;color:var(--ink-2)}
.sess[aria-current="true"] .n{background:var(--brand);color:var(--brand-ink)}
.sess .t{font-size:13.5px;font-weight:500;line-height:1.3;display:block}
.sess .s{font-size:12px;color:var(--muted)}
.gdot{font-size:11px;font-weight:600;padding:1px 7px;border-radius:999px;background:var(--tint);color:var(--muted);white-space:nowrap}
.gdot.score{background:var(--accent-soft);color:var(--warn)}
.editor{display:flex;flex-direction:column;gap:16px;min-width:0}
.blocks{display:flex;flex-direction:column;gap:6px}
.block{display:grid;grid-template-columns:18px 32px minmax(0,1fr) auto;gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.block:hover{border-color:var(--line-strong)}
.block .grip{color:#9DABA3;cursor:grab}
.block .ico{width:32px;height:32px;border-radius:8px}
.block .bt{font-size:11.5px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.block .bn{font-size:13.5px;overflow-wrap:anywhere}
.block.check{margin-left:30px;border-style:dashed;background:var(--subtle)}
.addgroups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:14px;border-radius:12px;background:var(--subtle);border:1px solid var(--line-2)}
@media (max-width:860px){.addgroups{grid-template-columns:minmax(0,1fr)}}
.addgroups .chips{gap:6px}
.addgroups .chip{min-height:30px;font-size:12.5px}
.rule-sentence{font-size:13.5px;padding:12px 14px;border-radius:10px;background:var(--info-soft);color:#173F7A;display:flex;gap:10px;align-items:flex-start}
.slots{display:flex;flex-wrap:wrap;gap:8px}
.slot{font-family:var(--f-mono);font-size:12px;padding:6px 10px;border-radius:8px;border:1px solid var(--line-strong);background:var(--surface)}
.typecards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (max-width:760px){.typecards{grid-template-columns:minmax(0,1fr)}}
.typecard{display:flex;flex-direction:column;gap:8px;padding:14px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface);cursor:pointer;text-align:left;color:var(--ink)}
.typecard[aria-pressed="true"]{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand);background:#FBFDFB}
.typecard small{font-size:12.5px;color:var(--muted)}

/* ---------- open class ---------- */
.mile{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:relative}
.mile > div{padding:16px 14px 14px;display:flex;flex-direction:column;gap:2px;position:relative;min-width:0}
.mile > div::before{content:"";position:absolute;top:22px;left:0;right:0;height:2px;background:var(--line)}
.mile > div:first-child::before{left:22px}
.mile > div:last-child::before{right:auto;width:22px}
.mile i{width:14px;height:14px;border-radius:50%;background:var(--surface);border:3px solid var(--brand);position:relative;margin-bottom:8px}
.mile i.amber{border-color:var(--accent)}
.mile b{font-size:13px}
.mile span{font-size:12px;color:var(--muted)}
.mile .mono{color:var(--ink);font-size:12px}
@media (max-width:900px){.mile{grid-template-columns:minmax(0,1fr)}.mile>div{padding:8px 14px 8px 40px}.mile>div::before{top:0;bottom:0;left:20px;right:auto;width:2px;height:auto}.mile>div:first-child::before{top:18px;left:20px}.mile>div:last-child::before{bottom:auto;height:18px;width:2px;right:auto}.mile i{position:absolute;left:14px;top:12px}}
.preview{max-width:320px}

/* ---------- students ---------- */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 18px;border-bottom:1px solid var(--line-2)}
.toolbar .searchbox{flex:1 1 200px;max-width:280px}
.drop{border:2px dashed var(--line-strong);border-radius:12px;padding:20px;text-align:center;display:flex;flex-direction:column;gap:6px;align-items:center;background:var(--subtle)}
.drop.over{border-color:var(--brand);background:var(--brand-soft)}
.linkbox{display:flex;gap:8px}
.linkbox input{font-family:var(--f-mono);font-size:12px;background:var(--subtle)}
.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (max-width:600px){.steps3{grid-template-columns:minmax(0,1fr)}}
.steps3 div{padding:10px 12px;border-radius:10px;background:var(--subtle);font-size:12.5px;color:var(--muted)}
.steps3 b{display:block;color:var(--ink);font-size:13px}

/* ---------- grading ---------- */
.grade{display:grid;grid-template-columns:270px minmax(0,1fr) 320px;gap:18px;align-items:start}
@media (max-width:1400px){.grade{grid-template-columns:270px minmax(0,1fr)}.grade .score{grid-column:2}}
@media (max-width:980px){.grade{grid-template-columns:minmax(0,1fr)}.grade .score{grid-column:auto}}
.q-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;padding:12px 14px;border:0;border-top:1px solid var(--line-2);background:transparent;text-align:left;cursor:pointer;color:var(--ink);width:100%}
.q-item:first-child{border-top:0}
.q-item:hover{background:var(--subtle)}
.q-item[aria-current="true"]{background:var(--brand-soft)}
.q-item b{font-size:13.5px;display:block}
.q-item span{font-size:12px;color:var(--muted);display:block}
.paper{background:var(--paper);border:1px solid #E8E3D2;border-radius:10px;padding:22px 26px 26px 58px;background-image:repeating-linear-gradient(transparent 0 33px,var(--paper-line) 33px 34px);background-position:0 18px;box-shadow:inset 42px 0 0 -40px #F0B8B4}
.paper.hand p{font-family:var(--f-hand);font-size:26px;line-height:34px;color:#1E2F5C}
.paper.typed p{font-size:15px;line-height:34px}
.paper del{color:var(--ink-red);text-decoration-thickness:2px}
.paper ins{text-decoration:none;color:var(--ink-red);font-family:var(--f-hand);font-size:22px;font-weight:600;margin-left:4px;position:relative;top:-8px}
.paper .circle{border:2px solid var(--ink-red);border-radius:50%;padding:0 4px}
.rubric{display:flex;flex-direction:column;gap:12px}
.rb-row{display:grid;grid-template-columns:minmax(0,1fr) 72px;gap:10px;align-items:center}
.rb-row label{font-size:13px;font-weight:500}
.total{display:flex;align-items:baseline;gap:6px}
.total b{font-family:var(--f-display);font-size:40px;font-variant-numeric:tabular-nums;line-height:1}
.verdict{padding:12px 14px;border-radius:10px;font-size:13px;display:flex;flex-direction:column;gap:6px}
.verdict.ok{background:var(--ok-soft)} .verdict.bad{background:var(--bad-soft)}

/* ---------- calendar ---------- */
.cal-box{overflow-x:auto}
.cal{display:grid;grid-template-columns:repeat(7,minmax(130px,1fr));min-width:910px}
.cal-day{border-left:1px solid var(--line-2);min-height:360px;display:flex;flex-direction:column;padding-bottom:10px}
.cal-day:first-child{border-left:0}
.cal-h{padding:10px 12px;border-bottom:1px solid var(--line-2);display:flex;justify-content:space-between;align-items:baseline}
.cal-h b{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.cal-h span{font-family:var(--f-display);font-size:18px;font-weight:600}
.cal-h.today span{background:var(--brand);color:var(--brand-ink);border-radius:8px;padding:0 8px}
.ev{margin:8px 8px 0;padding:8px 10px;border-radius:9px;font-size:12px;display:flex;flex-direction:column;gap:1px}
.ev b{font-size:12.5px}
.ev-live{background:var(--live-soft);color:#1C4683}
.ev-off{background:var(--off-soft);color:#7A3B0C}
.ev-talk{background:var(--self-soft);color:#17633A}
.ev-free{background:var(--surface);color:var(--muted);border:1px dashed var(--line-strong)}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.legend span{display:inline-flex;gap:6px;align-items:center}
.legend i{width:12px;height:12px;border-radius:4px;display:inline-block}

/* ---------- learner ---------- */
.resume{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;background:var(--brand);color:#FFFFFF;border-radius:var(--r);padding:24px 26px}
@media (max-width:700px){.resume{grid-template-columns:minmax(0,1fr)}}
.resume h2{color:#FFFFFF;font-size:20px}
.resume .over{color:#B9D2C3;font-size:12.5px;font-weight:500}
.resume .bar{background:rgba(255,255,255,.2)}
.resume .bar i{background:var(--accent)}
.resume .reqs{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:#DCEAE1}
.resume .reqs span{display:inline-flex;gap:6px;align-items:center}
.three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start}
@media (max-width:1150px){.three{grid-template-columns:minmax(0,1fr)}}
.metric{display:flex;flex-direction:column;gap:6px;padding:14px 18px;border-top:1px solid var(--line-2)}
.metric:first-child{border-top:0}
.metric .row{justify-content:space-between}
.metric b{font-variant-numeric:tabular-nums}
.road-week .card-h{gap:14px}
.road-week .card-h .bar{flex:0 1 160px}
.ritem{display:grid;grid-template-columns:36px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px 18px;border-top:1px solid var(--line-2);position:relative}
.ritem:first-of-type{border-top:0}
.ritem .st{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--muted)}
.ritem.done .st{background:var(--ok-soft);color:var(--ok)}
.ritem.now{background:#FAFCFB}
.ritem.now .st{background:var(--brand);color:var(--brand-ink)}
.ritem.locked .t{color:var(--muted)}
.ritem .t{font-weight:600}
.ritem .why{font-size:12.5px;color:var(--muted);margin-top:2px}
.lesson{display:grid;grid-template-columns:240px minmax(0,1fr) 290px;gap:18px;align-items:start}
@media (max-width:1300px){.lesson{grid-template-columns:220px minmax(0,1fr)}.lesson .rail{grid-column:2}}
@media (max-width:980px){.lesson{grid-template-columns:minmax(0,1fr)}.lesson .rail{grid-column:auto}}
.parts{display:flex;flex-direction:column}
.part{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;align-items:start;padding:12px 14px;border:0;border-top:1px solid var(--line-2);background:transparent;text-align:left;cursor:pointer;color:var(--ink);width:100%}
.part:first-child{border-top:0}
.part:hover{background:var(--subtle)}
.part[aria-current="true"]{background:var(--brand-soft)}
.part .n{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--tint);font-size:12px;font-weight:700;color:var(--ink-2)}
.part.done .n{background:var(--ok-soft);color:var(--ok)}
.part[aria-current="true"] .n{background:var(--brand);color:var(--brand-ink)}
.part b{font-size:13.5px;display:block;line-height:1.35}
.part span{font-size:12px;color:var(--muted)}
.ptrack{position:relative;height:8px;border-radius:999px;background:var(--tint)}
.ptrack .fill{position:absolute;inset:0 auto 0 0;background:var(--brand);border-radius:999px}
.ptrack .cp{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:var(--accent);border:2px solid var(--surface);box-shadow:0 0 0 1px var(--accent)}
.ptrack .cp.ok{background:var(--ok);box-shadow:0 0 0 1px var(--ok)}
.pctl{display:flex;gap:14px;align-items:center}
.play{width:48px;height:48px;border-radius:50%;background:var(--brand);color:var(--brand-ink);border:0;display:grid;place-items:center;cursor:pointer;flex:none}
.play svg{width:20px;height:20px}
.qcard{border:1px solid #F0D79F;border-radius:12px;padding:16px;background:var(--accent-soft);display:flex;flex-direction:column;gap:12px}
.opts{display:grid;gap:8px}
.opt{text-align:left;padding:10px 14px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface);cursor:pointer;font-weight:500;color:var(--ink)}
.opt:hover{border-color:var(--brand)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.reading{font-size:16px;line-height:1.85;max-width:66ch}
.reading p + p{margin-top:14px}
.w{border:0;background:var(--accent-soft);padding:0 3px;border-radius:4px;cursor:pointer;font:inherit;color:inherit;box-shadow:inset 0 -2px 0 var(--accent)}
.w:hover{background:#F8E3B5}
.video{aspect-ratio:16/9;max-width:100%;border-radius:12px;background:#1B3328;display:grid;place-items:center;color:#FFFFFF;position:relative}
.video .play{background:#FFFFFF;color:var(--brand)}
.video span{position:absolute;left:16px;bottom:12px;font-size:12.5px;color:#C9DCCF}
.cond{display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;align-items:start;padding:10px 0;border-top:1px solid var(--line-2)}
.cond:first-child{border-top:0}
.cond .c{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--muted)}
.cond.met .c{background:var(--ok-soft);color:var(--ok)}
.cond b{font-size:13px;display:block}
.cond .bar{margin-top:6px}
.ipa{font-family:var(--f-mono);font-size:12.5px;color:var(--muted)}

/* ================= EngNote Lớp học: phần thêm cho bản chạy thật ================= */
.alert.ok-alert{background:var(--ok-soft);border-color:#BFE1CB}
.alert.ok-alert svg{color:var(--ok)}
.alert a{color:var(--brand);font-weight:600}
[aria-disabled="true"]{opacity:.5;pointer-events:none}
.md p{margin:0}.md p+p{margin-top:10px}.md ul,.md ol{margin:8px 0 8px 22px;padding:0}.md h3,.md h4,.md h5{margin:14px 0 6px}.md code{font-family:var(--f-mono);font-size:.92em;background:var(--tint);padding:1px 5px;border-radius:5px}
.md a{color:var(--brand);text-decoration:underline}
.reading.md p{margin:0}.reading.md p+p{margin-top:14px}
.gloss{margin-top:16px;padding-top:12px;border-top:1px solid var(--line-2);display:flex;flex-direction:column;gap:8px}
.media-host{border-radius:12px;overflow:hidden}
.media-host.video{background:#1B3328}.media-host video{width:100%;display:block;max-height:420px}
.media-host audio{display:none}
.rate{width:auto;min-height:32px;padding:2px 8px}
.ptime{font-size:12.5px;color:var(--ink-2)}
.opt-l{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);cursor:pointer}
.opt-l:hover{border-color:var(--brand)}.opt-l:has(input:checked){border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.opt-l input{margin-top:4px;accent-color:var(--brand)}
.qitem{display:flex;flex-direction:column;gap:8px;padding:14px;border:1px solid var(--line);border-radius:12px}
.qitem.right{border-color:#9FD1B2;background:#F6FBF8}.qitem.wrong{border-color:#F0B8B2;background:#FFF8F7}
.qtext{font-weight:600}.qn{color:var(--muted);margin-right:4px}
.q-res{margin:0}
.quiz-result{padding:12px 14px;border-radius:10px;font-weight:700;font-family:var(--f-display);font-size:18px}
.quiz-result.ok{background:var(--ok-soft);color:var(--ok)}.quiz-result.bad{background:var(--bad-soft);color:var(--bad)}
.vocab-table td,.vocab-table th{padding:9px 14px}
.opts .opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.ptrack{cursor:pointer}.ptrack .fill{pointer-events:none}.ptrack .cp{pointer-events:none}
.pctl{flex-wrap:wrap}
.saved{opacity:.7}
.ccard .cover canvas{pointer-events:none}
.ccard .foot .btn{margin-left:auto}
/* chứng nhận */
.cert-sheet{max-width:720px;margin:12px auto;padding:44px 40px;border:2px solid var(--brand);border-radius:18px;background:linear-gradient(180deg,#FFFEFA,#F8F6EC);text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center;box-shadow:var(--sh-lg);position:relative}
.cert-sheet::before{content:"";position:absolute;inset:8px;border:1px solid var(--accent);border-radius:12px;pointer-events:none}
.cert-ribbon{width:56px;height:56px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center}.cert-ribbon svg{width:28px;height:28px}
.cert-line{color:var(--muted)}.cert-name{font-family:var(--f-hand);font-size:44px;line-height:1.1;color:#1E2F5C}
.cert-course{font-family:var(--f-display);font-size:24px;font-weight:600}
.cert-kv{margin-top:14px;min-width:280px}
/* trình soạn */
.unit-title{border:0;background:transparent;font-family:var(--f-display);font-weight:600;font-size:13.5px;min-height:30px;padding:2px 6px;width:100%}
.unit-title:focus{background:var(--surface);box-shadow:0 0 0 2px var(--brand-soft)}
.bedit{border:1px solid var(--line);border-radius:12px;background:var(--surface)}.bedit.check{margin-left:28px;border-style:dashed;background:var(--subtle)}
.bedit-h{display:flex;gap:10px;align-items:center;padding:8px 12px;border-bottom:1px solid var(--line-2)}.bedit-b{padding:12px;display:flex;flex-direction:column;gap:10px}
.optrow{display:flex;gap:8px;align-items:center;margin-bottom:6px}.optrow input[type=text]{flex:1}
.optrow input[type=radio],.optrow input[type=checkbox]{accent-color:var(--brand)}
.gaterow{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:8px 0;border-top:1px solid var(--line-2)}.gaterow:first-child{border-top:0}
.gaterow select,.gaterow input{width:auto;max-width:160px}.inl{display:inline-flex;gap:6px;align-items:center;font-size:13px}
.qedit{border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:10px;background:var(--subtle)}
.mini input{min-height:32px;padding:3px 8px;min-width:90px}.mini th,.mini td{padding:6px 8px}
.issues{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:13.5px}
.issues a{color:var(--brand);font-weight:600}
.dlg{border:1px solid var(--line-strong);border-radius:14px;padding:0;box-shadow:var(--sh-lg)}.dlg::backdrop{background:rgba(20,32,25,.4)}
.d{margin-top:2px}

/* ================= Làm mới giao diện (v2): icon, gợi ý, hướng dẫn từng bước, bố cục dễ nhìn ================= */
.btn svg.i{margin-inline:-2px 0}
.btn.icon svg.i{margin:0}
.btn:active{transform:translateY(1px)}
.btn.danger{color:var(--bad);border-color:#EBC2BD}
.btn.danger:hover{background:var(--bad-soft)}
.btn.ghost.danger:hover{background:var(--bad-soft)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn.lg{min-height:46px;padding:0 20px;font-size:15px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
/* gợi ý khi rê chuột */
.tip{position:fixed;z-index:300;max-width:280px;background:#1A2A21;color:#FFFFFF;font-size:12.5px;line-height:1.45;font-weight:500;padding:7px 11px;border-radius:9px;box-shadow:var(--sh-lg);pointer-events:none;text-align:center}
.tip::after{content:"";position:absolute;left:50%;margin-left:-5px;bottom:-5px;width:10px;height:10px;background:inherit;transform:rotate(45deg);border-radius:2px}
.tip[data-below="1"]::after{bottom:auto;top:-5px}
/* tiêu đề trang */
.page{gap:24px}
.page-h{align-items:center}
.page-title{display:flex;gap:14px;align-items:center;min-width:0}
.page-title .ico{width:48px;height:48px;border-radius:13px}
.page-title .ico svg.i{width:24px;height:24px}
.page-title h1{overflow-wrap:anywhere}
.page-h .sub{margin-top:2px}
.over .mono{background:var(--tint);border-radius:6px;padding:0 6px}
/* thanh bước của khóa: 1 Thông tin → 2 Nội dung → 3 Lớp học */
.stepper{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.step{display:flex;gap:12px;align-items:center;padding:12px 16px;border:1px solid var(--line);border-radius:13px;background:var(--surface);text-decoration:none;color:var(--ink);box-shadow:var(--sh);min-width:0;transition:border-color .15s,background .15s}
.step:hover{background:var(--subtle);border-color:var(--line-strong)}
.step .no{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--ink-2);font-family:var(--f-display);font-weight:600;flex:none}
.step b{display:block;font-size:14.5px;line-height:1.3}
.step small{display:block;color:var(--muted);font-size:12.5px;line-height:1.35}
.step .go{margin-left:auto;color:var(--muted)}
.step[aria-current="page"]{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand),var(--sh);background:#FAFDFB}
.step[aria-current="page"] .no{background:var(--brand);color:var(--brand-ink)}
.step[aria-current="page"] b{color:var(--brand)}
@media (max-width:760px){.stepper{grid-template-columns:minmax(0,1fr);gap:8px}.step{padding:10px 14px}}
/* trạng thái rỗng có icon + nút */
.empty.rich{display:flex;flex-direction:column;align-items:center;gap:10px;padding:34px 24px;background:var(--surface)}
.empty.rich .ico{width:54px;height:54px;border-radius:16px}
.empty.rich .ico svg.i{width:26px;height:26px}
.empty.rich b{font-family:var(--f-display);font-size:16px;color:var(--ink)}
.empty.rich p{max-width:46ch}
/* hộp mẹo */
.tipbox{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border-radius:12px;background:var(--info-soft);color:#173F7A;font-size:13.5px}
.tipbox svg{margin-top:2px;flex:none}
/* Bắt đầu nhanh */
.qs{overflow:hidden}
.qs-h{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:18px 20px;border-bottom:1px solid var(--line-2);background:linear-gradient(180deg,#F6FAF7,#FFFFFF)}
.qs-h h2{display:flex;gap:10px;align-items:center}
.qs-prog{display:flex;gap:10px;align-items:center;margin-left:auto;min-width:200px}
.qs-prog .bar{flex:1;height:8px}
.qs-item{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:16px;align-items:center;padding:14px 20px;border-top:1px solid var(--line-2)}
.qs-h + .qs-item{border-top:0}
.qs-item .no{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--ink-2);font-family:var(--f-display);font-weight:600}
.qs-item.done .no{background:var(--ok);color:#FFFFFF}
.qs-item.next{background:var(--brand-soft)}
.qs-item.next .no{background:var(--brand);color:var(--brand-ink)}
.qs-item.lock .t,.qs-item.lock .s{color:var(--muted)}
.qs-item.done .t{text-decoration:none;color:var(--ink-2)}
.qs-item .t{font-weight:600;display:block}
.qs-item .s{font-size:13px;color:var(--muted);display:block}
.qs-item .act{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
@media (max-width:640px){.qs-item{grid-template-columns:36px minmax(0,1fr)}.qs-item .act{grid-column:2;justify-content:flex-start}.qs-prog{margin-left:0;width:100%}}
/* thanh trên cùng: nút hướng dẫn */
.app-top .help{display:flex;gap:8px;align-items:center}
/* thanh công cụ trình soạn */
.builder-bar{position:sticky;top:57px;z-index:15;display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:rgba(244,246,244,.96);backdrop-filter:blur(6px);padding:10px 14px;border:1px solid var(--line);border-radius:13px;box-shadow:var(--sh)}
.builder-bar .savestate{display:inline-flex;gap:8px;align-items:center;font-size:13px;color:var(--muted);font-weight:500;min-height:24px}
.builder-bar .savestate::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--ok);flex:none}
.builder-bar .savestate[data-s="dirty"]::before{background:var(--accent)}
.builder-bar .savestate[data-s="saving"]::before{background:var(--info);animation:pulse 1s infinite}
.builder-bar .savestate[data-s="error"]::before{background:var(--bad)}
@keyframes pulse{50%{opacity:.35}}
@media (max-width:640px){.builder-bar{top:0;position:static}}
.outline{top:130px;max-height:calc(100vh - 150px)}
@media (max-width:1150px){.outline{position:static;max-height:none}}
.outline .card-h{background:var(--subtle);border-radius:var(--r) var(--r) 0 0}
.outline-hint{padding:10px 14px;font-size:12.5px;color:var(--muted);border-bottom:1px solid var(--line-2)}
.week-h{gap:6px}
.week-h .tools{display:flex;gap:0;flex:none}
.week-h .btn.icon{width:30px;min-height:30px;border-radius:7px}
.week-h .btn.icon svg.i{width:16px;height:16px}
.sess{grid-template-columns:30px minmax(0,1fr) auto;padding:9px 10px}
.sess .n{width:30px;height:30px;border-radius:9px;background:var(--tint);color:var(--ink-2)}
.sess .n svg.i{width:16px;height:16px}
.sess .t{font-size:14px;font-weight:600}
.sess .s{font-size:12.5px}
.gdot{display:inline-flex;gap:4px;align-items:center}
.gdot svg.i{width:12px;height:12px}
.lesson-head{display:flex;gap:12px;align-items:center}
.lesson-head .ico{width:42px;height:42px;border-radius:12px}
.bedit{border-radius:13px;box-shadow:var(--sh)}
.bedit-h{padding:10px 14px;background:var(--subtle);border-radius:13px 13px 0 0;gap:10px}
.bedit-h .ico{width:32px;height:32px;border-radius:9px}
.bedit-h b{font-family:var(--f-display);font-weight:600;font-size:14px}
.bedit-b{padding:14px}
.bedit.check{background:#FFFDF6}
.bedit-h .btn.icon{min-height:32px;width:32px}
.blocktiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.btile{display:flex;gap:12px;align-items:flex-start;text-align:left;padding:12px 14px;border:1px dashed var(--line-strong);border-radius:13px;background:var(--surface);cursor:pointer;color:var(--ink);transition:border-color .12s,background .12s,transform .12s}
.btile:hover{border-style:solid;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.btile .ico{width:36px;height:36px;border-radius:10px}
.btile b{display:block;font-size:14px;line-height:1.3}
.btile small{display:block;font-size:12.5px;color:var(--muted);line-height:1.35;margin-top:2px}
.addgroups{display:block;padding:16px;border-radius:14px}
.addgroups .label-up{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.gaterow{padding:12px 0}
.gaterow select{max-width:280px}
.gate-hint{font-size:12.5px;color:var(--muted);flex-basis:100%;margin-top:-4px}
.rule-sentence svg{margin-top:2px;flex:none}
.field > label{display:flex;gap:6px;align-items:center}
.field > label svg.i{width:16px;height:16px;color:var(--muted)}
.issues li{display:flex;gap:10px;align-items:flex-start;padding:8px 12px;border-radius:10px;background:var(--subtle)}
.issues li.error{background:var(--bad-soft)}
.issues li.warn,.issues li.warning{background:var(--warn-soft)}
/* thẻ KPI, việc cần làm */
.kpi{align-items:center}
.card-h h3 svg{color:var(--muted)}
.todo{align-items:center}
/* bảng */
.table-box table tbody tr.link:hover td{background:var(--brand-soft)}
td.act,th.act{width:1%;white-space:nowrap;text-align:right}
td .btn-row{justify-content:flex-end}
.tag svg.i{width:13px;height:13px}
/* thanh bên */
.side .logo{padding:4px 8px 8px}
.ngroup{gap:2px}
.nav-a[aria-current="page"]{box-shadow:inset 3px 0 0 var(--brand)}
.nav-a.hl{background:var(--accent-soft);color:var(--accent-ink)}
.nav-a.hl svg{color:var(--warn)}
/* trang hướng dẫn */
.guide-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:1100px){.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.guide-grid{grid-template-columns:minmax(0,1fr)}}
.concept{padding:16px 18px;display:flex;flex-direction:column;gap:8px}
.concept .ico{width:42px;height:42px;border-radius:12px}
.concept b{font-family:var(--f-display);font-size:15px}
.concept p{font-size:13.5px;color:var(--muted)}
.gsteps{display:flex;flex-direction:column;gap:14px;counter-reset:gs}
.gstep{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:18px;align-items:start;padding:18px 20px}
.gstep .no{width:44px;height:44px;border-radius:50%;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-family:var(--f-display);font-size:18px;font-weight:600}
.gstep h3{font-size:16px;margin-bottom:4px;display:flex;gap:8px;align-items:center}
.gstep p{color:var(--ink-2);font-size:14px}
.gstep .act{display:flex;flex-direction:column;gap:8px;align-items:stretch}
@media (max-width:760px){.gstep{grid-template-columns:44px minmax(0,1fr)}.gstep .act{grid-column:2;flex-direction:row;flex-wrap:wrap}}
.faq details{border-top:1px solid var(--line-2);padding:0}
.faq details:first-child{border-top:0}
.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;list-style:none;display:flex;gap:10px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary .chev{margin-left:auto;color:var(--muted);transition:transform .15s}
.faq details[open] summary .chev{transform:rotate(180deg)}
.faq details p{padding:0 18px 16px;color:var(--ink-2);font-size:14px;max-width:80ch}
.kindlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.kindlist .k{display:flex;gap:12px;align-items:flex-start}
.kindlist .k b{display:block;font-size:14px}
.kindlist .k small{color:var(--muted);font-size:12.5px;line-height:1.4;display:block}
/* các bước làm tiếp ở trang tạo khóa */
.nextsteps{display:flex;gap:10px;flex-wrap:wrap}
.nextsteps li{list-style:none;display:flex;gap:8px;align-items:center;padding:8px 12px;border-radius:999px;background:var(--tint);font-size:13px;font-weight:500}
.nextsteps li b{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:var(--brand-ink);font-size:12px}
.nextsteps{margin:0;padding:0}
/* hộp chia sẻ liên kết */
.sharebox{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:16px 18px}
.sharebox .ico{width:42px;height:42px;border-radius:12px}
.sharebox .linkbox{flex:1 1 320px;min-width:0}
.sharebox .linkbox input{flex:1;min-width:0}
/* thanh lưu cuối trang Thông tin */
.savebar{position:sticky;bottom:12px;z-index:10;display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 16px;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r);box-shadow:var(--sh-lg)}
.sg-l h3{display:flex;gap:8px;align-items:center}
.sg-l h3 svg{color:var(--brand)}
/* trang người học */
.part{padding:13px 14px}
.pctl .rate{min-height:36px}
.resume .btn.accent{min-height:46px;padding:0 22px;font-size:15px}
.ritem .btn{min-width:96px}
.ritem .st svg.i{width:18px;height:18px}
.ccard .foot .btn{min-height:36px}
.card-f .btn svg.i{width:16px;height:16px}
.auth .btn.primary{min-height:44px}
.pub-nav a{display:inline-flex;gap:8px;align-items:center}
.pub-top .wrap{gap:14px}
.pub-top .btn{min-height:38px}
/* ---- văn bản định dạng: hiển thị cho học viên và trong trình soạn (Markup.cs) ---- */
.md blockquote{margin:12px 0;padding:8px 16px;border-left:4px solid var(--brand);background:var(--brand-soft);border-radius:0 10px 10px 0;color:var(--ink-2)}
.md blockquote p{margin:0}.md blockquote p+p{margin-top:8px}
.md hr{border:0;border-top:2px solid var(--line);margin:18px 0}
.md mark{background:#FFE9A8;color:inherit;padding:0 2px;border-radius:3px}
.md u{text-underline-offset:2px}
.md ul ul,.md ol ol,.md ul ol,.md ol ul{margin:4px 0 4px 20px}
.md li{margin:2px 0}
.md img.md-img{max-width:100%;height:auto;border-radius:10px;margin:6px 0;display:inline-block;vertical-align:middle}
.md .md-table{overflow-x:auto;margin:12px 0}
.md table{border-collapse:collapse;min-width:0;width:auto;max-width:100%;font-size:inherit}
.md th,.md td{border:1px solid var(--line-strong);padding:7px 12px;min-width:56px;text-align:left;vertical-align:top;font-size:inherit}
.md th{background:var(--subtle);text-transform:none;letter-spacing:0;color:var(--ink);font-weight:600}
.md tbody tr:last-child td{border-bottom:1px solid var(--line-strong)}
.md .ta-center{text-align:center}.md .ta-right{text-align:right}.md .ta-justify{text-align:justify}
.md .c-red,.c-red{color:#C2261B}.md .c-orange,.c-orange{color:#C25E0A}.md .c-green,.c-green{color:#1D7A45}.md .c-blue,.c-blue{color:#2457A6}.md .c-purple,.c-purple{color:#7B3FB0}.md .c-gray,.c-gray{color:#5D6C64}
.md h3,.md h4,.md h5{line-height:1.3}
/* ---- trình soạn thảo trực quan (lms-rte.js) ---- */
.rte{border:1px solid var(--line-strong);border-radius:12px;background:var(--surface);position:relative}
.rte:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.rte-bar{display:flex;flex-wrap:wrap;gap:4px 8px;padding:6px 8px;border-bottom:1px solid var(--line-2);background:var(--subtle);border-radius:11px 11px 0 0;position:sticky;top:126px;z-index:6}
.rte-grp{display:inline-flex;gap:2px;padding-right:8px;border-right:1px solid var(--line)}
.rte-grp:last-child{border-right:0;padding-right:0}
.rte-btn{min-width:32px;height:32px;padding:0 6px;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--ink-2);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:4px;font-size:13px;font-weight:600}
.rte-btn:hover:not(:disabled){background:var(--tint)}
.rte-btn[aria-pressed="true"]{background:var(--brand-soft);color:var(--brand);border-color:#C9DBD0}
.rte-btn:disabled{opacity:.35;cursor:not-allowed}
.rte-btn:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
.rte-g span{font-family:Georgia,"Times New Roman",serif;font-size:16px;font-weight:700;line-height:1}
.rte-g-italic span{font-style:italic;font-weight:600}.rte-g-underline span{text-decoration:underline;font-weight:600}.rte-g-strike span{text-decoration:line-through;font-weight:600}
.rte-btn[data-c=color]{flex-direction:column;gap:1px;padding-top:3px}
.rte-cbar{width:16px;height:3px;border-radius:2px;background:linear-gradient(90deg,#C2261B,#C25E0A,#1D7A45,#2457A6,#7B3FB0)}
.rte-blabel{min-width:82px;text-align:left}
.rte-area{min-height:200px;max-height:70vh;overflow:auto;padding:16px 18px;outline:none;font-size:15.5px;line-height:1.75;background:var(--surface);border-radius:0 0 12px 12px}
.rte-area p{margin:0 0 10px}
.rte-area .mx{font-family:var(--f-mono);font-size:.95em;background:var(--info-soft);border-radius:4px;padding:0 4px}
.rte-area img{cursor:default}
.rte-area table{background:#fff}
.rte-area td:empty::after,.rte-area th:empty::after{content:"\00a0"}
.rte-tbar{display:flex;gap:4px;flex-wrap:wrap;padding:6px 8px;background:var(--info-soft);border-bottom:1px solid var(--line-2)}
.rte-tbar[hidden]{display:none}
.rte-tl{font-size:12px;font-weight:500}
.rte-msg{padding:4px 12px 6px;min-height:6px}
.rte-pop{position:absolute;z-index:20;background:#fff;border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--sh-lg);padding:10px;min-width:190px;display:flex;flex-direction:column;gap:8px}
.rte-mi{display:block;width:100%;text-align:left;border:0;background:transparent;padding:7px 12px;border-radius:8px;cursor:pointer;color:var(--ink)}
.rte-mi:hover{background:var(--tint)}.rte-mi[aria-current=true]{background:var(--brand-soft);color:var(--brand)}
.rte-mi-h1{font-size:20px;font-weight:700;font-family:var(--f-display)}.rte-mi-h2{font-size:17px;font-weight:700;font-family:var(--f-display)}.rte-mi-h3{font-size:15px;font-weight:700;font-family:var(--f-display)}
.rte-sw{display:flex;gap:8px;align-items:center}
.rte-swb{width:28px;height:28px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line-strong);cursor:pointer;padding:0;display:grid;place-items:center;color:var(--muted);background:#fff}
.rte-swb:hover{box-shadow:0 0 0 2px var(--brand)}
.rte-grid{display:grid;grid-template-columns:repeat(6,24px);gap:3px}
.rte-gc{width:24px;height:24px;border:1px solid var(--line-strong);background:#fff;border-radius:4px;padding:0;cursor:pointer}
.rte-gc.on{background:var(--brand-soft);border-color:var(--brand)}
.rte-pl{display:flex;flex-direction:column;gap:4px;font-size:12.5px;font-weight:600;color:var(--ink-2)}
.rte-in{min-width:240px}.rte-in.bad{border-color:var(--bad);box-shadow:0 0 0 3px var(--bad-soft)}
.rte.rte-source .rte-tbar{display:none}
.rte-src{width:100%;min-height:240px;border:0;border-radius:0 0 11px 11px;font-family:var(--f-mono);font-size:13px;line-height:1.6;resize:vertical}
.rte-src:focus{box-shadow:none}
@media (max-width:640px){.rte-bar{position:static}.rte-area{max-height:none}.rte-pop{left:4px!important;right:4px;min-width:0}}
/* hướng dẫn trên màn hình */
.tour-veil{position:fixed;inset:0;z-index:400;background:transparent}
.tour-spot{position:fixed;z-index:401;border-radius:12px;box-shadow:0 0 0 9999px rgba(12,28,20,.58),0 0 0 3px var(--accent);pointer-events:none;transition:left .22s ease,top .22s ease,width .22s ease,height .22s ease,opacity .15s;opacity:0}
.tour-pop{position:fixed;z-index:402;width:min(380px,calc(100vw - 24px));background:var(--surface);border-radius:16px;box-shadow:0 18px 50px rgba(8,20,14,.35);padding:18px 18px 16px;display:flex;flex-direction:column;gap:12px;animation:tour-in .18s ease-out}
.tour-pop.center{left:50%;top:50%;transform:translate(-50%,-50%)}
@keyframes tour-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.tour-pop.center{animation:none}
.tour-h{display:flex;gap:12px;align-items:flex-start}
.tour-h .ico{width:40px;height:40px;border-radius:12px}
.tour-h h3{font-size:16.5px;line-height:1.3}
.tour-n{font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--brand)}
.tour-x{margin:-6px -8px 0 auto}
.tour-b{font-size:14px;line-height:1.6;color:var(--ink-2)}
.tour-dots{display:flex;gap:6px}
.tour-dots i{width:8px;height:8px;border-radius:50%;background:var(--line-strong)}
.tour-dots i.past{background:#9CBCAA}
.tour-dots i.on{background:var(--brand);width:22px;border-radius:999px}
.tour-f{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:2px}
.tour-links{display:flex;flex-direction:column;gap:2px;align-items:flex-start}
.tour-link{border:0;background:transparent;color:var(--muted);font-size:12.5px;cursor:pointer;padding:2px 0;text-decoration:underline;text-underline-offset:2px}
.tour-link:hover{color:var(--ink)}
@media (max-width:640px){.tour-pop{left:12px!important;right:12px;bottom:12px;top:auto!important;width:auto;transform:none!important}.tour-pop.center{top:auto;left:12px;transform:none}}
@media (prefers-reduced-motion:reduce){.tour-spot,.tour-pop{transition:none;animation:none}}
@media print{.tour-veil,.tour-spot,.tour-pop,.tip{display:none!important}}
@media print{.pub-top,.pub-foot,.no-print,.toast{display:none!important}.cert-sheet{box-shadow:none;border-radius:0}body{background:#fff}}

/* ---- pha 2: tiền ---- */
.pricebox{display:flex;flex-direction:column;gap:6px}
.pricebox .prow{display:flex;justify-content:space-between;gap:12px;align-items:baseline;padding:6px 0;border-top:1px solid var(--line-2);font-size:14px;font-variant-numeric:tabular-nums}
.pricebox .prow:first-child{border-top:0}
.pricebox .prow.early{color:var(--ok)} .pricebox .prow.muted{color:var(--muted);font-size:13px}
.pricebox .prow.net{font-weight:700;font-size:15.5px;color:var(--brand)}
.pricebox.compact{margin-top:10px;max-width:420px}
.plainlist{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;color:var(--ink-2)}
.plainlist li{display:flex;gap:8px;align-items:flex-start}
.plainlist svg{color:var(--brand);margin-top:3px}
.paycard{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:20px 22px;border-left:4px solid var(--accent);margin-bottom:18px}
.paycard.is-bad{border-left-color:var(--bad)}
.paycard-l{display:flex;gap:14px;align-items:flex-start;flex:1 1 380px;min-width:0}
.paycard-r{display:flex;flex-direction:column;gap:8px;align-items:flex-start;flex:0 1 300px}
.paycard-r .btn{width:100%}
.paidinfo{margin-bottom:18px}
.refundform{display:flex;flex-direction:column;gap:6px;flex:1 1 320px;min-width:0}
.refundform input[type=text]{flex:1;min-width:0}
.ritem.paylock{opacity:.78}
.ritem.paylock .st{background:var(--warn-soft);color:var(--warn)}
.savebar{display:flex;justify-content:flex-end;padding-top:18px;border-top:1px solid var(--line)}
.js-pay-col .tag{white-space:nowrap}
#priceStats{margin-bottom:6px}
@media (max-width:640px){.paycard{padding:16px}.paycard-r{flex-basis:100%}}
.logo-img{width:100%;height:100%;object-fit:contain;border-radius:inherit;background:#fff}

/* ---- bản độc lập: lớp thanh toán (trang chọn cổng, chuyển khoản, quản trị thanh toán) ---- */
.pay-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:18px}
.pay-grid.has-side{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)}
@media (max-width:900px){.pay-grid.has-side{grid-template-columns:minmax(0,1fr)}}
.paypm{display:flex;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line-strong);border-radius:12px;cursor:pointer;background:var(--surface)}
.paypm:has(input:checked){border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}
.paypm.off{opacity:.55;cursor:not-allowed}
.paypm input{margin:0}
.paypm-i{font-size:22px;line-height:1}
.paypm small{display:block}
.payqr{width:240px;max-width:100%;height:auto;align-self:center;border-radius:10px;background:#fff;padding:6px;border:1px solid var(--line)}
.payamt{display:flex;flex-direction:column;gap:2px}
.paykv{grid-template-columns:auto 1fr}
.paykv dd{text-align:left;word-break:break-word}
.payidle{text-align:center;align-items:center}
.pay-tabs{margin:14px 0}
.pay-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,2fr);gap:14px;margin:14px 0}
@media (max-width:900px){.pay-hero{grid-template-columns:minmax(0,1fr)}}
.pay-hero .main b{display:block;font-family:var(--f-display);font-size:30px;line-height:1.15;font-variant-numeric:tabular-nums}
.pay-subs{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}
.pay-subs div{display:flex;flex-direction:column;gap:2px}
.pay-subs b{font-variant-numeric:tabular-nums}
.pay-bar{display:flex;align-items:center;gap:8px;height:10px;border-radius:6px;background:var(--tint);overflow:hidden;min-width:60px}
.pay-bar i{display:block;height:100%;background:var(--brand)}
.pay-todo{display:flex;flex-wrap:wrap;gap:10px}
.pay-todo a{display:flex;flex-direction:column;padding:10px 14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);min-width:130px}
.pay-todo a.warn{border-color:var(--warn);background:var(--warn-soft)}
.pay-todo b{font-size:20px;font-variant-numeric:tabular-nums}
.pay-days{display:flex;align-items:flex-end;gap:2px;height:90px}
.pay-days i{flex:1;min-width:2px;background:var(--brand);border-radius:2px 2px 0 0;opacity:.85}
.pay-filter{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.pay-filter label{display:flex;flex-direction:column;gap:3px;font-size:12.5px;color:var(--muted)}
.pay-ck{margin:14px 0}
.pay-ck ul{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:6px}
.pay-ck .ok{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--ok)}

/* ---- trung tâm quản trị (shell "ad") + khu thanh toán quản trị ---- */
.kpi-link{text-decoration:none;color:inherit}
.kpi-link:hover{border-color:var(--brand)}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.hub-card{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;text-decoration:none;color:inherit}
.hub-card:hover{border-color:var(--brand);background:var(--brand-soft)}
.hub-card b{display:block;font-family:var(--f-display);font-size:15px}
.hub-card p{font-size:13px;color:var(--muted);margin-top:2px}
.hub-todo{display:flex;flex-wrap:wrap;gap:10px}
.hub-chip{display:flex;flex-direction:column;gap:2px;min-width:150px;padding:10px 14px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface);text-decoration:none;color:var(--ink)}
.hub-chip b{font-family:var(--f-display);font-size:20px;font-variant-numeric:tabular-nums}
.hub-chip span{font-size:12.5px;color:var(--muted)}
.hub-chip.warn{border-color:#E6C27A;background:var(--warn-soft)}
.hub-chip.warn b{color:var(--warn)}
.hub-chip:hover{border-color:var(--brand)}
.pa-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 4px}
.pa-tabs .chip{text-decoration:none}
.pa-tabs .chip[aria-current="page"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.pa-filter{display:flex;flex-direction:column;gap:12px}
.pa-fields{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.pa-fields .field{min-width:150px}
.pa-grow{flex:1 1 220px}
.pa-go{display:flex;gap:8px}
.pa-hero b{font-size:28px}
.pa-bars{display:flex;align-items:flex-end;gap:2px;height:120px}
.pa-bar{flex:1;min-width:2px;background:var(--brand);border-radius:2px 2px 0 0;opacity:.85}
.pa-bar:hover{opacity:1}
.pa-bars-x{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:6px}
.pa-share{display:block;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--brand) var(--w,0%),var(--tint) var(--w,0%));margin-top:4px}
.pa-kv dd{text-align:left}
.pa-wrap{white-space:pre-wrap;word-break:break-word;max-width:520px}
.pa-bad td{background:var(--bad-soft)}
.pa-actions{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.pa-aform{display:flex;flex-direction:column;gap:8px;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--subtle)}
.pa-people{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px}
.pa-person header{display:flex;gap:10px;align-items:center}
.pa-person.due{border-color:#E6C27A}
.pa-payform{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.pa-gw.is-off{opacity:.78}
.pa-urls{display:flex;flex-direction:column;gap:8px}
.pa-urls>div{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pa-urls>div>span{font-size:12.5px;color:var(--muted);min-width:170px}
.pa-urls code{background:var(--tint);padding:3px 8px;border-radius:6px;font-size:12.5px;word-break:break-all}
.pa-howto ol{margin:8px 0 8px 20px;display:flex;flex-direction:column;gap:4px}
.pa-ck{margin:0}
.pa-ck-list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.pa-ck-list li{display:flex;gap:10px}
.pa-ck-list .pa-ck-2 span:first-child{color:var(--bad);font-weight:700}
.pa-ck-list .pa-ck-1 span:first-child{color:var(--warn);font-weight:700}
.pa-ck-ok{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--ok)}
.pa-savebar{position:sticky;bottom:0;display:flex;justify-content:flex-end;padding:12px 0;background:linear-gradient(0deg,var(--bg) 70%,transparent)}
.pa-doclist{margin:0 0 0 20px;display:flex;flex-direction:column;gap:4px}
@media (max-width:760px){.pa-urls>div>span{min-width:0;width:100%}.pa-actions{grid-template-columns:1fr}}

/* ======================================================================
   Gọn gàng hơn: trình soạn bài giảng (khối thu gọn được, thanh «Thêm khối» gọn), khối Luyện nói 1:1 của học viên
   ====================================================================== */
.blocks-card>.card-h{min-height:48px;padding:10px 16px}
.chip-add{display:inline-flex;gap:7px;align-items:center;min-height:32px;padding:0 12px 0 6px;border:1px solid var(--line-strong);border-radius:999px;background:var(--surface);font:inherit;font-size:13px;font-weight:600;color:var(--ink);cursor:pointer;transition:border-color .12s,background .12s,transform .12s}
.chip-add:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.chip-add .ico{width:22px;height:22px;border-radius:50%}
.chip-add .ico svg.i{width:13px;height:13px}
.blocks-card>.card-b{padding:14px 16px}
.bedit{border-radius:12px;box-shadow:none}
.bedit.folded{background:var(--subtle)}
.bedit-h{padding:6px 8px 6px 6px;min-height:46px;gap:6px;background:var(--subtle);border-radius:12px 12px 0 0}
.bedit.folded .bedit-h{border-bottom:0;border-radius:12px}
.bedit-tt{display:flex;gap:10px;align-items:center;min-width:0;flex:1 1 auto;background:none;border:0;padding:4px 6px;border-radius:9px;cursor:pointer;font:inherit;color:inherit;text-align:left}
.bedit-tt:hover{background:var(--tint)}
.bedit-tt b{white-space:nowrap}
.bedit-tt .chev{display:inline-grid;place-items:center;width:20px;height:20px;color:var(--muted);transition:transform .15s}
.bedit.folded .bedit-tt .chev{transform:rotate(-90deg)}
.bedit-sum{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;color:var(--muted);font-weight:400}
.bedit-h .spacer{flex:1 1 0;min-width:4px}
.bedit-h>.inl{white-space:nowrap}
.bedit-b{padding:14px 16px;gap:12px}
.bedit-b[hidden]{display:none}
.bedit .field>label,.editor .field>label{font-size:12.5px}
.hint{display:flex;gap:8px;align-items:flex-start;margin:0;padding:8px 12px;border-radius:10px;background:var(--info-soft);color:var(--ink-2);font-size:12.5px;line-height:1.45}
.hint svg.i{color:var(--info);flex:none;margin-top:2px}
.switchrow{display:flex;gap:10px;align-items:center;align-self:end;min-height:40px;padding:0 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);font-size:13px}
.switchrow input{width:18px;height:18px;flex:none}
/* trình soạn văn bản gọn hơn */
.rte-bar{gap:2px 6px;padding:4px 6px}
.rte-btn{min-width:30px;height:30px}
.rte-area{min-height:130px;padding:12px 14px;font-size:15px;line-height:1.7}
.editor{gap:14px}
.editor .card-h{padding:12px 16px}
.builder{gap:16px}
.outline .sess{padding:7px 8px}
.outline .week{padding:8px 8px 10px}
.outline-hint{padding:8px 14px}
.builder-bar{padding:8px 12px;border-radius:12px}
/* khối Luyện nói 1:1 ở trang học */
.chip-s{display:inline-flex;align-items:center;min-height:24px;padding:0 10px;border-radius:999px;background:var(--tint);color:var(--ink-2);font-size:12px;font-weight:600}
.chip-s.warn{background:var(--warn-soft);color:var(--warn)}
.spkb-panel{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--subtle);display:flex;flex-direction:column;gap:12px}
.spkb-who{display:flex;gap:12px;align-items:center}
.spkb-who b{display:block;font-size:15px}
.spkb-stats{display:flex;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-top:2px}
.spkb-stats .ok{color:var(--ok);font-weight:600}
.spkb-next{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:10px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.spkb-next.live{border-color:var(--ok);background:var(--ok-soft)}
.spkb-next small{display:block}
.spkb-actions{display:flex;gap:8px;flex-wrap:wrap}
.card-f .small{margin-left:8px}
@media (max-width:640px){.bedit-sum{display:none}.bedit-h>.inl span{display:none}}
.rte-bar{position:static}
/* chọn / kéo giãn ảnh trong trình soạn thảo */
.rte-area img.md-img.rte-img-on{outline:2px solid var(--brand);outline-offset:1px}
.rte-ib{position:absolute;pointer-events:none;z-index:7;border:2px solid var(--brand);border-radius:6px;box-sizing:border-box}
.rte-ib[hidden]{display:none}
.rte-ib-h{position:absolute;width:14px;height:14px;background:#fff;border:2px solid var(--brand);border-radius:4px;pointer-events:auto;touch-action:none}
.rte-ib-nw{left:-8px;top:-8px;cursor:nwse-resize}.rte-ib-ne{right:-8px;top:-8px;cursor:nesw-resize}
.rte-ib-sw{left:-8px;bottom:-8px;cursor:nesw-resize}.rte-ib-se{right:-8px;bottom:-8px;cursor:nwse-resize}
.rte-ib-bar{position:absolute;left:0;bottom:calc(100% + 8px);pointer-events:auto;display:flex;align-items:center;gap:4px;padding:4px 6px;background:#fff;border:1px solid var(--line-strong);border-radius:10px;box-shadow:var(--sh-lg);white-space:nowrap}
.rte-ib-bar.below{bottom:auto;top:calc(100% + 8px)}
.rte-ib-w{font-size:12px;font-weight:600;color:var(--muted);min-width:46px;text-align:center}
.rte-ib-b{min-width:34px;height:28px;padding:0 8px;border:1px solid var(--line);border-radius:7px;background:var(--subtle);color:var(--ink-2);font-size:12px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.rte-ib-b:hover{background:var(--tint)}.rte-ib-b.danger{color:var(--bad)}
.rte-ib-alt{width:150px;height:28px;font-size:12.5px;padding:0 8px}
@media (max-width:640px){.rte-ib-bar{flex-wrap:wrap;white-space:normal;max-width:min(320px,86vw)}.rte-ib-alt{width:100%}}
/* câu hỏi trắc nghiệm: gập / mở, đáp án có ảnh */
.qedit{border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden;padding:0;gap:0}
.qedit-h{display:flex;align-items:center;gap:8px;padding:6px 8px 6px 4px;background:var(--subtle);border-bottom:1px solid var(--line-2)}
.qedit.folded .qedit-h{border-bottom:0}
.qedit-tt{display:flex;align-items:center;gap:8px;flex:1;min-width:0;border:0;background:transparent;cursor:pointer;text-align:left;padding:4px 6px;border-radius:8px;color:var(--ink)}
.qedit-tt:hover{background:var(--tint)}
.qedit-tt .chev{display:inline-flex;transition:transform .15s}
.qedit.folded .qedit-tt .chev{transform:rotate(-90deg)}
.qedit-tt .qn{display:inline-grid;place-items:center;min-width:24px;height:24px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700}
.qedit-tt .bedit-sum{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-weight:400}
.qedit-b{padding:12px 14px;display:flex;flex-direction:column;gap:12px}
.optrow{flex-wrap:wrap}
.optimg{flex-basis:100%;display:flex;gap:8px;flex-wrap:wrap;padding-left:30px}
.optimg-i{position:relative;display:inline-block}
.optimg-i img{height:54px;width:auto;max-width:120px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.optimg-x{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;border:0;background:var(--ink);color:#fff;font-size:14px;line-height:1;cursor:pointer;padding:0}
/* câu hỏi ở trang học: đề nhiều đoạn, ảnh, danh sách */
.qtext-b{display:flex;gap:8px;align-items:baseline}
.qtext-b .qn{flex:none;font-weight:700;color:var(--brand)}
.qtext-b .md{flex:1;min-width:0}
.q-res img.md-img{max-width:160px;height:auto}
/* âm thanh / video kèm câu hỏi */
.qmedia-p{display:block;width:100%;max-width:560px;margin:8px 0}
video.qmedia-p{max-height:340px;border-radius:12px;background:#000}
.qmedia{border:1px dashed var(--line-strong);border-radius:12px;padding:10px 12px;background:var(--subtle)}
/* bài tập chấm tay: tự luận / ghi âm / viết tay */
.task-head{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.task-body{display:flex;flex-direction:column;gap:14px}
.task-body textarea{width:100%;min-height:200px;font-size:15.5px;line-height:1.7}
.task-actions{gap:8px;align-items:center}
.task-own{display:flex;flex-direction:column;gap:6px}
.task-own-t{white-space:pre-wrap;word-break:break-word;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--subtle);line-height:1.7;max-height:420px;overflow:auto}
.task-wait{padding:10px 14px;border-radius:12px;background:var(--warn-soft);color:var(--warn)}
.task-wait p{display:flex;gap:8px;align-items:center;margin:0}
.task-res{padding:14px 16px;border-radius:14px;border:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.task-res.ok{background:var(--ok-soft);border-color:#BFE0CB}
.task-res.redo{background:var(--bad-soft);border-color:#EBC2BD}
.task-score{display:flex;align-items:baseline;gap:6px}.task-score b{font-size:34px;line-height:1;color:var(--ok);font-family:var(--f-display)}.task-score span{color:var(--muted);font-size:16px}
.task-note{display:flex;flex-direction:column;gap:6px;padding-top:8px;border-top:1px dashed var(--line-strong)}
.task-note audio,.task-own audio,.rec-play audio{width:100%;max-width:520px}
.task-sample,.task-prev{border:1px solid var(--line);border-radius:12px;padding:8px 14px;background:var(--surface)}
.task-sample>summary,.task-prev>summary{cursor:pointer;font-weight:600}
.task-prev-i{padding:8px 0;border-top:1px solid var(--line-2)}.task-prev-i:first-of-type{border-top:0}
.task-rec{display:flex;flex-direction:column;gap:8px}
.rec-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.rec-row label.btn{cursor:pointer}.rec-row label.btn[aria-disabled=true]{opacity:.45;pointer-events:none}
.rec-time{min-width:96px;font-size:13px;color:var(--muted)}
.rec-play{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.btn.danger[data-rec=stop]{background:var(--bad);color:#fff;border-color:var(--bad)}
.grade-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,1fr);gap:16px;align-items:start}
.grade-form{position:sticky;top:130px}
.num-in{max-width:90px;text-align:right}.num-in.bad{border-color:var(--bad);box-shadow:0 0 0 3px var(--bad-soft)}
.rub{width:100%;border-collapse:collapse}.rub th{text-align:left;font-size:12.5px;color:var(--muted)}.rub td,.rub th{padding:6px 4px;border-bottom:1px solid var(--line-2)}.rub .num{text-align:right;white-space:nowrap}.rub tr.total td{border-bottom:0;padding-top:10px}
.dot-new{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--bad);margin-left:6px;vertical-align:middle}
.small.bad{color:var(--bad)}
@media (max-width:900px){.grade-grid{grid-template-columns:1fr}.grade-form{position:static}}

/* ======================================================================
   Trình soạn bài giảng: MỘT nút nổi «Thêm nội dung» (luôn nằm trên màn hình khi cuộn, cả điện thoại lẫn máy tính) → bảng chọn loại nội dung.
   Khối đã thêm nền vàng nhạt; «Điều kiện qua bài» nền đỏ nhạt.
   ====================================================================== */
.add-fab{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:40;display:inline-flex;gap:6px;align-items:center;justify-content:center;height:44px;padding:0 16px 0 12px;border:0;border-radius:999px;background:var(--brand);color:var(--brand-ink);font:inherit;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 6px 18px rgba(16,32,24,.26);transition:transform .12s,box-shadow .12s}
.add-fab:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(16,32,24,.3)}
.add-fab:focus-visible{outline:3px solid var(--info);outline-offset:3px}
.add-fab svg.i{width:20px;height:20px;transition:transform .18s}
.add-fab[aria-expanded="true"] svg.i{transform:rotate(45deg)}
.add-back{position:fixed;inset:0;z-index:58;background:rgba(20,32,25,.28)}
.add-back[hidden],.add-menu[hidden]{display:none}
.add-menu{position:fixed;right:18px;bottom:calc(72px + env(safe-area-inset-bottom,0px));z-index:59;width:min(372px,calc(100vw - 36px));max-height:min(70vh,520px);overflow:auto;overscroll-behavior:contain;background:var(--surface);border:1px solid var(--line-strong);border-radius:18px;box-shadow:0 18px 48px rgba(16,32,24,.28);padding:10px 10px 12px}
.add-menu-h{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 4px 8px;position:sticky;top:-10px;margin-top:0;background:var(--surface);z-index:1}
.add-menu-h b{display:inline-flex;gap:6px;align-items:center;font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.add-menu-h .btn.icon{min-height:30px;width:30px;padding:0}
.add-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.add-menu .chip-add{display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:flex-start;width:100%;min-height:0;padding:10px 4px 8px;border-radius:12px;text-align:center;transform:none}
.add-menu .chip-add:hover{transform:none}
.add-menu .chip-add .ico{width:34px;height:34px;border-radius:10px;flex:none}
.add-menu .chip-add .ico svg.i{width:18px;height:18px}
.add-t{display:flex;flex-direction:column;min-width:0;max-width:100%}
.add-t b{font-size:12.5px;font-weight:600;line-height:1.25;color:var(--ink);overflow-wrap:anywhere}
@media (max-width:640px){
  .add-fab{width:48px;height:48px;padding:0;right:16px}
  .add-fab span{display:none}
  .add-menu{left:0;right:0;bottom:0;width:auto;max-height:70vh;border-radius:20px 20px 0 0;border-width:1px 0 0;padding:10px 12px calc(14px + env(safe-area-inset-bottom,0px))}
  html.add-open .add-fab{display:none}
}
/* khối nội dung đã thêm: nền vàng nhạt */
.bedit,.bedit.check{background:#FFFBE6;border-color:#E8D48A}
.bedit.folded{background:#FFF6D2}
.bedit-h,.bedit.folded .bedit-h{background:#FFF1BE}
.bedit-tt:hover{background:rgba(255,255,255,.55)}
.bedit.check{border-style:dashed}
/* điều kiện qua bài: nền đỏ nhạt */
#gateCard{background:#FFF2F0;border-color:#F0B8B0}
#gateCard>.card-h{background:#FFE4E0;border-bottom-color:#F0B8B0}
#gateCard .gaterow{border-top-color:#F3CFCA}
#gateCard .rule-sentence{background:rgba(255,255,255,.75);color:var(--ink-2);border:1px solid #F0B8B0}
#gateCard .rule-sentence svg{color:var(--bad)}
@media (max-width:640px){.bedit-h{flex-wrap:wrap}.bedit-tt{flex:1 1 100%}.bedit-h .spacer{display:none}.bedit-h>.inl{margin-right:auto}}

/* ======================================================================
   Khối video / audio trong trình soạn: hai dòng cấu hình (nguồn, % + thời lượng); có video thì thêm khung xem trước nhỏ bên trái.
   ====================================================================== */
.vedit{display:flex;flex-direction:column;gap:10px;min-width:0}
.vedit.is-video.has-prev{display:grid;grid-template-columns:minmax(180px,260px) minmax(0,1fr);gap:14px;align-items:start}
.vedit-prev{border-radius:10px;overflow:hidden;background:#000;aspect-ratio:16/9}
.vedit.is-audio .vedit-prev{aspect-ratio:auto;background:transparent;border-radius:0}
.vedit-prev video,.vedit-prev iframe,.vedit-yt,.vedit-yt>div{display:block;width:100%;height:100%;border:0}
.vedit-prev video{object-fit:contain}
.vedit.is-audio .vedit-prev audio{display:block;width:100%;height:36px}
.vedit-cfg{display:flex;flex-direction:column;gap:10px;min-width:0}
.vedit-src{display:flex;flex-wrap:wrap;gap:8px 10px;align-items:center;min-width:0}
.vedit-src .seg button{display:inline-flex;gap:6px;align-items:center;padding:5px 12px}
.vedit-src .btn.sm{flex:none}
.vedit-link{flex:1 1 240px;min-width:0;min-height:34px;padding:5px 10px;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface);color:var(--ink);font-size:13.5px}
.vedit-stat{flex-basis:100%}
.vedit-stat:empty{display:none}
.vedit-name{flex:1 1 120px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2)}
.vedit-name:empty{display:none}
.vedit-nums{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
.vedit-nums .inl{display:inline-flex;gap:6px;align-items:center;font-size:13px;color:var(--ink-2);white-space:nowrap}
.vedit-nums input[type=number]{width:64px;min-height:32px;padding:4px 8px;text-align:right;font-size:13.5px}
@media (max-width:640px){.vedit.is-video.has-prev{grid-template-columns:1fr}}
/* trang học: video YouTube (khung 16:9, điều khiển bằng nút + thanh tiến độ bên dưới như video tải lên) */
.media-host.yt{aspect-ratio:16/9;max-height:420px}
.media-host.yt .yt-slot,.media-host.yt iframe{display:block;width:100%;height:100%;border:0}

/* ======================================================================
   Điểm danh bằng ảnh chụp + cổng làm bài trắc nghiệm + nhật ký học tập (giáo viên)
   ====================================================================== */
html.attend-open{overflow:hidden}
.attend-modal{position:fixed;inset:0;z-index:300;display:grid;place-items:center;padding:16px;background:rgba(16,32,24,.55)}
.attend-box{width:min(480px,100%);max-height:calc(100vh - 32px);overflow:auto;margin:0}
.attend-cam{position:relative;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:#0E1A14}
.attend-cam video,.attend-cam img{display:block;width:100%;height:100%;object-fit:cover}
.attend-cam video{transform:scaleX(-1)}
.attend-ph{position:absolute;inset:0;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;padding:16px;text-align:center;font-size:13px;color:#C9DCCF}
.attend-ph svg.i{width:30px;height:30px}
.attend-acts{gap:8px}
.attend-steps{margin:0;padding-left:20px;display:grid;gap:6px;color:var(--ink-2)}
.quiz-gate ul.attend-steps{list-style:none;padding-left:0}
.quiz-gate ul.attend-steps li{display:flex;gap:8px;align-items:flex-start}
.quiz-gate ul.attend-steps svg.i{flex:none;margin-top:2px}
.attend-opt{margin-top:4px}
.quiz-leave{gap:8px 14px;align-items:center;margin-bottom:12px}
.jr-stats{gap:8px;margin:-4px 0 14px}
.jr-photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.jr-ph{display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--ink-2);font-size:11.5px;min-width:0}
.jr-ph img,.jr-gone{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;background:var(--tint)}
.jr-gone{display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:center;color:var(--muted);font-size:12px;border:1.5px dashed var(--line-strong)}
.jr-ph span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
tr.jr-warn td{background:var(--warn-soft)}
tr.jr-warn svg.i{color:var(--warn)}
/* ---------------------------------------------------------------- ngân hàng câu hỏi + danh mục môn học */
.g4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:900px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
details.menu{position:relative}
details.menu>summary{list-style:none}
details.menu>summary::-webkit-details-marker{display:none}
.menu-pop{position:absolute;right:0;top:calc(100% + 6px);z-index:30;min-width:300px;max-width:min(380px,92vw);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-lg);padding:6px;display:flex;flex-direction:column}
.menu-pop a{display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border-radius:9px;color:var(--ink);text-decoration:none}
.menu-pop a:hover,.menu-pop a:focus-visible{background:var(--tint)}
.menu-pop a>span{display:flex;flex-direction:column;gap:2px}
.menu-pop a svg.i{margin-top:3px;color:var(--brand)}
.bank-subjects{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.bank-subj{color:inherit;text-decoration:none;transition:border-color .15s,box-shadow .15s}
.bank-subj:hover{border-color:var(--brand);box-shadow:var(--sh-lg)}
.bank-nums{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.bank-nums>div{display:flex;flex-direction:column;gap:2px}
.bank-nums b{font-family:var(--f-display);font-size:20px}
.bank-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:900px){.bank-layout{grid-template-columns:1fr}}
.bank-parts{position:sticky;top:70px;padding-bottom:8px;max-height:calc(100vh - 90px);overflow:auto}
.bank-skill{display:flex;gap:6px;align-items:center;padding:12px 16px 4px}
.bank-part{display:flex;gap:8px;align-items:center;justify-content:space-between;padding:7px 12px 7px 16px;margin:0 6px;border-radius:9px;color:var(--ink-2);text-decoration:none;font-size:13.5px}
.bank-part:hover{background:var(--tint)}
.bank-part[aria-current]{background:var(--brand-soft);color:var(--brand);font-weight:600}
.bank-part .t{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bank-filter input[type=search]{flex:1 1 200px;max-width:280px}
.bank-filter select{width:auto;max-width:170px}
.bank-table tbody tr[data-go]{cursor:pointer}
.bank-sum{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:62ch}
.bank-tags{color:var(--brand-ink)}
.subj-add>summary,.part-row>summary{cursor:pointer;list-style:none}
.subj-add>summary::-webkit-details-marker,.part-row>summary::-webkit-details-marker{display:none}
.part-row:not([open])>summary{border-bottom:0}
details.subj-edit{display:inline-block;position:relative;vertical-align:middle}
details.subj-edit>summary{list-style:none}
details.subj-edit>summary::-webkit-details-marker{display:none}
.subj-edit-f{position:absolute;right:0;top:calc(100% + 6px);z-index:20;width:300px;gap:10px;padding:14px;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-lg)}
.bank-tpl{align-items:center;gap:14px;flex-wrap:wrap}
.bank-editor{display:flex;flex-direction:column;gap:16px}
.bank-editor .optrow .opt-k,.opt-l .opt-k{font-weight:700;color:var(--muted);min-width:16px}
.bank-editor .optrow input[type=text]{flex:1}
.bank-editor .optrow.is-right{background:var(--ok-soft);border-radius:9px;padding:2px 6px}
.bank-child .qedit-h{display:flex;gap:10px;align-items:center}
.bank-child .qedit-h select{width:auto;max-width:220px}
.bank-child .qn{font-weight:700;background:var(--brand-soft);color:var(--brand-ink);border-radius:999px;min-width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;font-size:12.5px}
.bank-child.has-err{border-color:var(--bad);background:var(--bad-soft)}
.bank-children-h{gap:8px;align-items:center;padding-top:6px;border-top:1px solid var(--line-2)}
.bank-trans>summary{cursor:pointer;display:flex;gap:8px;align-items:center;font-size:13px;font-weight:600;color:var(--ink-2)}
.bank-trans[open]>summary{margin-bottom:8px}
.bank-show:not(.show-ans) .ans{display:none}
.bank-show.show-ans .opt-l.is-right{border-color:var(--ok);background:var(--ok-soft)}
.bank-show .opt-l .ans{margin-left:auto}
.bank-passage{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--subtle);max-height:520px;overflow:auto;line-height:1.65}
.bank-gtitle{font-size:15px}
.bank-explain{padding:10px 12px;border-radius:10px;background:var(--info-soft)}
.bank-rubric{padding:10px 12px;border-radius:10px;background:var(--warn-soft)}
.bank-rubric ul,.bank-items{margin:6px 0 0;padding-left:20px}
.bank-transcript summary{cursor:pointer;display:flex;gap:6px;align-items:center;font-size:13px;font-weight:600}.bank-flags{gap:16px;flex-wrap:wrap;align-items:center}
.seg{display:inline-flex;gap:0}
.seg .btn{border-radius:0}
.seg .btn:first-child{border-radius:9px 0 0 9px}
.seg .btn:last-child{border-radius:0 9px 9px 0}
.bank-paper{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px 26px}
.bank-ph{font-size:17px;margin-top:10px;padding-bottom:6px;border-bottom:2px solid var(--line)}
.bank-ph:first-of-type{margin-top:0}
.bank-pguide{color:var(--ink-2)}
.bank-q{display:flex;flex-direction:column;gap:10px;padding:12px 0;border-bottom:1px dashed var(--line)}
.bank-q:last-child{border-bottom:0}
.bank-q .qitem{border:0;padding:0}
.bank-paper.show-ans .opt-l.is-right{border-color:var(--ok);background:var(--ok-soft)}
.bank-paper:not(.show-ans) .ans{display:none}
.bank-paper .opt-l .ans{margin-left:auto}
.bank-essay-box{width:100%}
.print-only{display:none}
.bank-imp tr.imp-bad td{background:var(--bad-soft)}
.bank-imp tr.imp-dup td{background:var(--warn-soft)}
.imp-errs{margin:0;padding-left:16px;color:var(--bad)}
.bank-rules>summary{cursor:pointer;list-style:none}
.bank-rules>summary::-webkit-details-marker{display:none}
.bank-rules-b ol{padding-left:20px;display:flex;flex-direction:column;gap:6px;margin:8px 0}
.bank-sample{font-family:var(--f-mono);font-size:12px;background:var(--subtle);border:1px solid var(--line);border-radius:10px;padding:10px 12px;white-space:pre-wrap;max-height:420px;overflow:auto}
@media print{
  .side,.app-top,.crumbs,.scrim,.bank-q-meta,#toast{display:none!important}
  .app,.app-body,.page{display:block!important;padding:0!important;margin:0!important;max-width:none!important}
  .print-only{display:block}
  .bank-paper{border:0;padding:0;border-radius:0}
  .bank-q{break-inside:avoid}
  .bank-passage{max-height:none;overflow:visible}
  .opt-l{border:0;padding:2px 0}
  .opt-l input{display:none}
}
/* ---------------------------------------------------------------- chụp ảnh màn hình (lms-shot.js) */
.shot-modal{position:fixed;inset:0;z-index:200;background:rgba(15,23,20,.62);display:flex;align-items:center;justify-content:center;padding:16px}
.shot-box{width:min(1200px,100%);max-height:calc(100vh - 32px);display:flex;flex-direction:column;overflow:hidden}
.shot-stage{position:relative;flex:1;min-height:0;overflow:hidden;display:flex;align-items:center;justify-content:center;background:#1d2420;padding:12px;cursor:crosshair;touch-action:none;user-select:none}
.shot-img{display:block;max-width:100%;max-height:calc(100vh - 190px);width:auto;height:auto;box-shadow:0 2px 10px rgba(0,0,0,.4)}
.shot-wrap{position:relative;display:inline-block;line-height:0}
.shot-sel{position:absolute;border:2px solid #fff;outline:1px dashed var(--brand);box-shadow:0 0 0 9999px rgba(0,0,0,.5);cursor:move;pointer-events:none}
.shot-acts{flex-wrap:wrap;gap:8px}
/* ---------------------------------------------------------------- đọc chữ trong ảnh (lms-ocr.js) */
.ocr-modal{position:fixed;inset:0;z-index:190;background:rgba(15,23,20,.55);display:flex;align-items:center;justify-content:center;padding:16px}
.ocr-box{width:min(980px,100%);max-height:calc(100vh - 32px);display:flex;flex-direction:column;overflow:hidden}
.ocr-body{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:16px;padding:16px 18px;min-height:0;overflow:auto}
@media (max-width:760px){.ocr-body{grid-template-columns:1fr}}
.ocr-src{position:relative;display:flex;align-items:center;justify-content:center;min-height:300px;border:1.5px dashed var(--line-strong);border-radius:12px;background:var(--subtle);overflow:hidden}
.ocr-src.over{border-color:var(--brand);background:var(--brand-soft)}
.ocr-src img{max-width:100%;max-height:420px;object-fit:contain;display:block}
.ocr-empty{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px;text-align:center}
.ocr-empty>svg.i{width:34px;height:34px;color:var(--muted)}
.ocr-change{position:absolute;right:10px;bottom:10px}
.ocr-out{gap:8px;min-width:0}
.ocr-opts{gap:8px;flex-wrap:wrap;align-items:center}
.ocr-opts select{width:auto}
.ocr-text{flex:1;min-height:240px;font-size:14px;line-height:1.55;resize:vertical}
/* ---- Bài kiểm tra trắc nghiệm bốc đề từ ngân hàng (lms-exam.js, trình soạn: ma trận đề) */
.ex-matrix select{min-width:180px}
.ex-matrix .ex-num{width:84px}
.ex-matrix tr.ex-short td{background:var(--bad-soft)}
.nowrap{white-space:nowrap}
.ex-opts{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.ex-opt{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;padding:9px 12px;border-top:1px solid var(--line-2)}
.ex-opt:first-child{border-top:0}
.ex-opt.on{background:var(--subtle)}
.ex-opt>label{font-weight:600}
.ex-opt-v{display:inline-flex;align-items:center;gap:6px;font-size:13px}
.ex-opt-v .ex-num{width:76px}
.ex-opt-v select{width:auto}
.ex-opt>p{flex-basis:100%;margin:0 0 0 26px}
.ex-intro{gap:14px}
.ex-facts{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.ex-fact{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--subtle)}
.ex-fact span{font-size:12px;color:var(--muted)}
.ex-fact b{font-size:15px}
.ex-rows ol{margin:6px 0 0;padding-left:20px;display:flex;flex-direction:column;gap:3px;font-size:14px}
.ex-rows li span+span{margin-left:8px}
.ex-result{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--subtle)}
.ex-result.ok{background:var(--ok-soft);border-color:transparent}.ex-result.bad{background:var(--bad-soft);border-color:transparent}
.ex-result-t{flex:1;min-width:180px}
.ex-score{display:flex;align-items:baseline;gap:4px;font-family:var(--f-display)}
.ex-score b{font-size:30px;line-height:1}
.ex-result.ok .ex-score{color:var(--ok)}.ex-result.bad .ex-score{color:var(--bad)}
.ex-review{display:flex;flex-direction:column;gap:12px}
.ex-hist summary{cursor:pointer;padding:4px 0}
.ex-bar{position:sticky;top:0;z-index:5;display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 4px 10px -8px rgba(0,0,0,.25)}
.ex-clock{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-variant-numeric:tabular-nums}
.ex-clock b{font-size:16px}
.ex-clock.warn{background:var(--warn-soft);color:var(--warn)}
.ex-clock.danger{background:var(--bad-soft);color:var(--bad);animation:ex-blink 1s steps(2) infinite}
@keyframes ex-blink{50%{opacity:.55}}
@media (prefers-reduced-motion:reduce){.ex-clock.danger{animation:none}}
.ex-paper{gap:14px}
.ex-nav{display:flex;flex-wrap:wrap;gap:6px}
.ex-chip{min-width:32px;height:30px;padding:0 6px;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface);font:inherit;font-size:13px;cursor:pointer;color:var(--ink-2)}
.ex-chip.on{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.ex-part{display:flex;flex-direction:column;gap:12px;padding-top:6px}
.ex-part-h{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;padding-bottom:6px;border-bottom:2px solid var(--line)}
.ex-part-h b{font-size:16px}
.ex-guide{font-size:14px;color:var(--ink-2)}
.ex-group{display:flex;flex-direction:column;gap:10px;padding:12px;border:1px solid var(--line);border-radius:12px}
.ex-passage{padding:10px 12px;background:var(--subtle);border-radius:8px;max-height:420px;overflow:auto}
.ex-q .qtext{position:relative}
.ex-pts{margin-left:auto;padding-left:8px;white-space:nowrap}
.ex-foot{padding-top:6px;border-top:1px solid var(--line)}
@media (max-width:640px){.ex-bar{padding:8px 12px}.ex-matrix select{min-width:120px}}
/* ---- Chấm bài (Views/Task), bài thực hành, giáo viên được phân công */
.grade-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(300px,1fr);gap:16px;align-items:start}
.grade-grid>.col{gap:16px}
.grade-form{position:sticky;top:12px}
.grade-form .rub input.bad,.grade-form input.bad{border-color:var(--bad)}
@media (max-width:900px){.grade-grid{grid-template-columns:1fr}.grade-form{position:static}}
.task-video{width:100%;max-width:640px;max-height:420px;border-radius:10px;background:#000}
.task-vid{display:flex;flex-direction:column;gap:8px}
.staff-line{gap:6px;flex-wrap:wrap}
.pr-answers{gap:8px 10px}
.pr-ans{padding:6px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.pr-ans.on{border-color:var(--brand);background:var(--brand-soft)}

/* ---- Ngân hàng: nhóm trạng thái, duyệt đồng loạt, lý do không duyệt */
.bank-side{gap:14px;min-width:0;position:sticky;top:70px;max-height:calc(100vh - 90px);overflow:auto}
.bank-side .bank-parts{position:static;max-height:none;overflow:visible}
.bank-bulk{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--brand-soft);position:sticky;top:0;z-index:4}
.bank-bulk .bank-reject{flex-basis:100%}
.bank-reject{display:flex;flex-direction:column;gap:8px}
.bank-reject textarea.bad{border-color:var(--bad)}
.bank-reason-chips{gap:6px;flex-wrap:wrap;margin-bottom:6px}
.bank-reason-chips .chip-s{cursor:pointer;border:1px solid var(--line);background:var(--surface)}
.bank-reason{margin-top:2px}
/* ---- Hồ sơ học viên */
.pf-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:16px;align-items:start}
.pf-nav{position:sticky;top:12px;display:flex;flex-direction:column;padding:8px}
.pf-nav a{padding:8px 10px;border-radius:8px;color:var(--ink-2);text-decoration:none;font-size:14px}
.pf-nav a:hover{background:var(--tint)}
.pf-main{gap:16px;min-width:0}
.pf-form{gap:16px}
.pf-main .card{scroll-margin-top:12px}
.g3 .span2{grid-column:span 2}
.field.has-err input,.field.has-err select,.field.has-err textarea{border-color:var(--bad)}
.req{color:var(--bad)}
.pf-photo{gap:18px;align-items:flex-start}
.pf-photo-box{width:120px;height:160px;border:1.5px dashed var(--line-strong);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--subtle);flex:none}
.pf-photo-box img{width:100%;height:100%;object-fit:cover}
.pf-avatar{width:52px;height:68px;border-radius:8px;object-fit:cover;border:1px solid var(--line)}
.pf-avatar.lg{width:90px;height:120px}
.pf-done{min-width:220px;display:flex;flex-direction:column;gap:6px}
.pf-rows input,.pf-rows textarea{min-width:72px;width:100%}
.pf-rows .pf-yr{min-width:58px;width:72px}
.pf-save{position:sticky;bottom:10px;z-index:5;box-shadow:0 6px 18px -10px rgba(0,0,0,.35)}
.pf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px 18px}
.pf-item{display:flex;flex-direction:column;gap:2px}
.pf-item span{font-size:12px;color:var(--muted)}
.pf-item b{font-weight:600;word-break:break-word}
@media (max-width:860px){.pf-layout{grid-template-columns:1fr}.pf-nav{position:static;flex-direction:row;flex-wrap:wrap}.g3 .span2{grid-column:auto}}
@media print{.side,.topbar,.pf-show .page-h .btn,.alert{display:none !important}.pf-show .card{break-inside:avoid;box-shadow:none}}
/* ---- Báo cáo học tập của lớp */
.rep-actions{gap:8px;flex-wrap:wrap}
.rep-lessons td{vertical-align:top}
.rep-unit td{background:var(--subtle);font-size:13px}
.rep-parts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px;font-size:13px}
.rep-parts li{display:flex;gap:6px;align-items:flex-start;color:var(--muted)}
.rep-parts li.done{color:var(--ink-2)}
.rep-parts li.done .rep-dot{color:var(--ok)}
.rep-dot{flex:none;display:inline-flex;margin-top:1px}

/* ---- Tiện ích chung (v3) */
.sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.span-all{grid-column:1/-1}
form.inline{display:inline}
.w-sm{max-width:200px} .w-md{max-width:320px} .w-lg{max-width:480px}
.card-f>.pager{flex:1;padding-top:0}
.pub-nav a{display:inline-flex;align-items:center;gap:6px}
@media (max-width:640px){
  .pub-top .wrap{gap:6px;flex-wrap:nowrap}
  .pub-top .logo small,.pub-nav{display:none}
  .pub-top .logo>span:last-child{display:none}
  .pub-top .btn.ghost:not(.js-lang){font-size:0;gap:0;width:38px;padding:0}
  .pub-top .btn{padding:0 10px}
}

/* ---- Trang chủ (Catalog/Index): chữ lớn + trang vở minh họa lộ trình, số liệu thật, môn học, cách học, dải dành cho giáo viên */
.home{gap:40px}
.hh{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;padding-block:20px 4px}
@media (max-width:960px){.hh{grid-template-columns:minmax(0,1fr);gap:28px}}
.hh-copy{display:flex;flex-direction:column;gap:18px;min-width:0}
.hh h1{font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.025em;font-weight:600;max-width:18ch}
.hh h1 em{font-style:normal;color:var(--brand);background:linear-gradient(transparent 62%,var(--accent-soft) 62%,var(--accent-soft) 92%,transparent 92%)}
.hh .lead{font-size:17px;max-width:52ch}
.hh-search{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line-strong);border-radius:14px;padding:6px 6px 6px 14px;box-shadow:var(--sh-lg);max-width:560px}
.hh-search svg{color:var(--muted)}
.hh-search input{border:0;box-shadow:none;min-height:44px;padding:0 4px;font-size:15px;background:transparent}
.hh-search input:focus{box-shadow:none}
.hh-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft),var(--sh-lg)}
.hh-search .btn{min-height:44px;border-radius:10px;padding:0 20px}
.hh-perks{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13.5px;color:var(--ink-2)}
.hh-perks li{display:inline-flex;gap:7px;align-items:center}
.hh-perks svg{color:var(--ok)}
.hh-paper{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-lg);padding:22px 22px 18px 54px;display:flex;flex-direction:column;gap:12px;min-width:0;transform:rotate(-1.2deg);
  background-image:linear-gradient(to right,transparent 38px,var(--ink-red) 38px,var(--ink-red) 39.5px,transparent 39.5px),repeating-linear-gradient(to bottom,transparent 0,transparent 31px,var(--paper-line) 31px,var(--paper-line) 32px)}
@media (max-width:960px){.hh-paper{transform:none}}
.hh-paper .sample{position:absolute;top:-11px;right:18px;background:var(--surface)}
.pd-h{display:flex;justify-content:space-between;align-items:baseline;gap:10px;font-family:var(--f-display)}
.pd-h b{font-size:16px;font-weight:600}
.pd-pct{font-family:var(--f-mono);font-size:13px;color:var(--brand);font-weight:600}
.pd-list{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.pd-list li{display:flex;gap:12px;align-items:center;padding:9px 12px;border-radius:10px;background:var(--surface);border:1px solid var(--line-2)}
.pd-list li>span:last-child{display:flex;flex-direction:column;font-weight:600;font-size:14px;min-width:0}
.pd-list small{font-weight:500;font-size:12px;color:var(--muted)}
.pd-dot{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--tint);color:var(--muted)}
.pd-list .done .pd-dot{background:var(--ok-soft);color:var(--ok)}
.pd-list .now{border-color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.pd-list .now .pd-dot{background:var(--brand);color:var(--brand-ink)}
.pd-list .lock{opacity:.7;border-style:dashed}
.pd-note{font-family:var(--f-hand);font-size:20px;color:var(--ink-red);line-height:1.2;padding-left:4px}
.hh-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.hh-stats>div{padding:18px 22px;display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line-2);min-width:0}
.hh-stats>div:first-child{border-left:0}
.hh-stats b{font-family:var(--f-display);font-size:28px;font-weight:600;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--brand)}
.hh-stats span{font-size:13px;color:var(--muted)}
@media (max-width:700px){.hh-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.hh-stats>div:nth-child(3){border-left:0}.hh-stats>div:nth-child(n+3){border-top:1px solid var(--line-2)}}
.subj-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.subj{display:flex;gap:12px;align-items:center;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.subj:hover{border-color:var(--brand);box-shadow:var(--sh-lg)}
.subj b{display:block;font-size:14px}
.subj small{color:var(--muted);font-size:12.5px}
.how{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;counter-reset:none}
@media (max-width:960px){.how{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.how{grid-template-columns:minmax(0,1fr)}}
.how li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:8px;min-width:0}
.how-n{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-ink);font-family:var(--f-display);font-weight:600}
.how b{font-family:var(--f-display);font-weight:600;font-size:15.5px}
.how p{font-size:13.5px;color:var(--muted)}
.teach-band{background:var(--brand);color:var(--brand-ink);border-radius:20px;padding:36px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:36px;align-items:center}
@media (max-width:960px){.teach-band{grid-template-columns:minmax(0,1fr);padding:26px 20px}}
.teach-band .label-up{color:var(--accent)}
.teach-band h2{color:var(--brand-ink);font-size:clamp(22px,3vw,32px);line-height:1.15;margin-top:8px}
.tb-copy{display:flex;flex-direction:column;gap:14px;min-width:0}
.tb-copy>p{opacity:.85;max-width:46ch}
.tb-note{font-size:12.5px;opacity:.8}
.tb-feats{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:560px){.tb-feats{grid-template-columns:minmax(0,1fr)}}
.tb-feats li{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:14px;min-width:0}
.tb-feats .ico{background:rgba(255,255,255,.14);color:var(--accent)}
.tb-feats b{display:block;font-size:14px}
.tb-feats p{font-size:12.5px;opacity:.8;margin-top:2px}

/* ---- Menu thao tác của một dòng (details.rmenu): nút «⋯» mở bảng lệnh, lms-common.js đặt vị trí cố định để không bị khung cuộn của bảng cắt */
details.rmenu{position:relative;display:inline-block}
details.rmenu>summary{list-style:none}
details.rmenu>summary::-webkit-details-marker{display:none}
details.rmenu[open]>summary{background:var(--tint)}
.rmenu-pop{position:fixed;z-index:70;min-width:250px;max-width:min(320px,92vw);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-lg);padding:6px;display:flex;flex-direction:column;gap:1px;text-align:left;white-space:normal}
.rmenu-pop form{margin:0}
.rmenu-pop button,.rmenu-pop a{display:flex;gap:10px;align-items:flex-start;width:100%;padding:8px 10px;border:0;border-radius:8px;background:transparent;cursor:pointer;text-align:left;font-size:13.5px;font-weight:600;color:var(--ink);text-decoration:none}
.rmenu-pop button:hover,.rmenu-pop a:hover,.rmenu-pop button:focus-visible{background:var(--tint)}
.rmenu-pop button svg{margin-top:2px;color:var(--muted)}
.rmenu-pop button>span{display:flex;flex-direction:column;gap:1px}
.rmenu-pop small{font-weight:400;font-size:12px;color:var(--muted)}
.rmenu-pop button.danger,.rmenu-pop button.danger svg{color:var(--bad)}
.rmenu-pop button.danger:hover{background:var(--bad-soft)}
.rmenu-pop hr{border:0;border-top:1px solid var(--line-2);margin:4px 0}

/* ---- Trang Người dùng */
.usr-add{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr)}
.usr-add>.form{padding:18px}
.usr-add>.form+.form{border-left:1px solid var(--line-2)}
@media (max-width:900px){.usr-add{grid-template-columns:minmax(0,1fr)}.usr-add>.form+.form{border-left:0;border-top:1px solid var(--line-2)}}
.usr-add .lbl{display:flex;align-items:center;gap:6px;font-size:14px}
.usr-add .form-actions{margin-top:auto}
.usr-add .input-group{width:auto}
.usr-search{display:flex;gap:8px;align-items:center;flex:1 1 260px;max-width:420px}
.usr-search .searchbox{flex:1}
.usr-search input{min-height:34px}
.usr-table td{padding-block:10px}
.usr-who{display:flex;gap:12px;align-items:center;min-width:0}
.usr-who .avatar{width:34px;height:34px;font-size:12px}
.usr-who .t{margin-right:6px}
.usr-table .chips{gap:4px}
.usr-acts{display:flex;gap:6px;justify-content:flex-end;align-items:center;flex-wrap:nowrap}
.usr-acts form{margin:0}
tr.usr-locked td:not(.act){opacity:.65}

/* ---- Phân trang có chọn số dòng (Pager.WithSize) */
.pager .pg-left{display:flex;align-items:center;gap:8px 16px;flex-wrap:wrap}
.pg-size{display:flex;align-items:center;gap:6px;margin:0}
.pg-size label{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.pg-size select{min-height:32px;padding:4px 30px 4px 10px;font-size:13px;background-position:right 10px center}

/* ---- Nhập học viên từ Excel (Views/Teach/_ImportLearners) */
details.imp>summary{cursor:pointer;list-style:none;border-bottom:0}
details.imp>summary::-webkit-details-marker{display:none}
details.imp>summary .chev{color:var(--muted);transition:transform .15s}
details.imp[open]>summary{border-bottom:1px solid var(--line-2)}
details.imp[open]>summary .chev{transform:rotate(180deg)}
.imp-b{display:flex;flex-direction:column;gap:16px}
.imp-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;counter-reset:imp}
@media (max-width:760px){.imp-steps{grid-template-columns:minmax(0,1fr)}}
.imp-steps li{counter-increment:imp;border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 14px 14px 52px;position:relative;display:flex;flex-direction:column;gap:8px;align-items:flex-start;min-width:0;background:var(--subtle)}
.imp-steps li::before{content:counter(imp);position:absolute;left:14px;top:14px;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:var(--brand-ink);font-family:var(--f-display);font-weight:600;font-size:13px}
.imp-steps li input[type=file]{background:var(--surface)}
.imp-sum{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--r-sm)}
.imp-sum>div{padding:12px 16px;display:flex;flex-direction:column;border-left:1px solid var(--line-2)}
.imp-sum>div:first-child{border-left:0}
.imp-sum b{font-family:var(--f-display);font-size:22px;font-weight:600;color:var(--ok);font-variant-numeric:tabular-nums}
.imp-sum>div:nth-child(2) b{color:var(--info)}
.imp-sum>div.bad b{color:var(--bad)}
.imp-sum span{font-size:12.5px;color:var(--muted)}
.imp-res{max-height:360px;overflow:auto;border:1px solid var(--line);border-radius:var(--r-sm)}
.imp-res table{min-width:560px}

/* ---- Câu hỏi nhiều ý (lms-qtypes.js: làm bài · lms-qedit.js: soạn) */
.qx{margin-top:4px;min-width:0}
.qx-tf-t{min-width:0;width:100%;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;border-collapse:separate;border-spacing:0}
.qx-tf-t th,.qx-tf-t td{padding:9px 12px;font-size:14px;vertical-align:middle}
.qx-tf-t th{font-size:11px}
.qx-tf-t th.c,.qx-tf-t td.c{width:1%;text-align:center;white-space:nowrap}
.qx-tf-t tbody tr:nth-child(even) td{background:var(--subtle)}
.qx-k{font-weight:700;color:var(--muted);white-space:nowrap;width:1%}
.qx-pass{line-height:2.1}
.qx-pass .qx-gap{display:inline-block;width:auto;min-width:110px;max-width:220px;min-height:32px;padding:3px 10px;margin:0 3px;vertical-align:baseline;font-size:14px}
.qx-pass select.qx-gap{padding-right:30px;background-position:right 9px center}
.qx-pool{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:10px 12px;border:1px dashed var(--line-strong);border-radius:var(--r-sm);background:var(--subtle);margin-bottom:10px}
.qx-w{font-size:13.5px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--line)}
.qx-pairs{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.qx-pairs li{display:grid;grid-template-columns:auto minmax(0,1fr) auto minmax(160px,.8fr);gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:var(--r-sm)}
.qx-arrow{color:var(--muted)}
@media (max-width:640px){.qx-pairs li{grid-template-columns:auto minmax(0,1fr)}.qx-arrow{display:none}.qx-pairs .qx-sel{grid-column:1/-1}}
.qx-list{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;counter-reset:qx}
.qx-it{counter-increment:qx;display:flex;align-items:center;gap:8px;padding:7px 8px 7px 12px;border:1px solid var(--line-strong);border-radius:var(--r-sm);background:var(--surface)}
.qx-it::before{content:counter(qx) ".";font-weight:700;color:var(--muted);min-width:20px}
.qx-txt{flex:1;min-width:0}
.qx-mv{display:flex;gap:2px;flex:none}
.qx-order.words .qx-list{flex-direction:row;flex-wrap:wrap}
.qx-order.words .qx-it{padding:4px 4px 4px 10px;border-radius:999px}
.qx-order.words .qx-it::before{display:none}
.qx-order.words .qx-txt{flex:none;font-weight:600}
.qitem.right .qx,.qitem.wrong .qx{opacity:.9}
.qe-rows{display:flex;flex-direction:column;gap:6px;margin-bottom:8px}
.qe-row select{width:auto;flex:none}
.qe-pair input{flex:1}
.qe-arrow{color:var(--muted);flex:none}
.qe-count{font-size:14px;padding-top:8px}
.qe-mono{font-family:var(--f-mono);font-size:13px;line-height:1.6}
.bank-many-ans ul{margin:4px 0 0;padding-left:18px}

/* ---- Lịch học của lớp (Views/Teach/Plan, _PlanStrip, _PlanTag) */
.mins-pick{margin-top:6px}
.mins-pick .chip{min-height:28px;padding:0 10px;font-size:12.5px}
.plan-days{margin-bottom:6px}
.plan-sum{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-bottom:1px solid var(--line-2)}
.plan-sum>div{padding:14px 18px;display:flex;flex-direction:column;border-left:1px solid var(--line-2);min-width:0}
.plan-sum>div:first-child{border-left:0}
.plan-sum b{font-family:var(--f-display);font-size:20px;font-weight:600;font-variant-numeric:tabular-nums}
.plan-sum span{font-size:12.5px;color:var(--muted)}
.plan-sum>div.bad b{color:var(--bad)}
@media (max-width:700px){.plan-sum{grid-template-columns:repeat(2,minmax(0,1fr))}.plan-sum>div:nth-child(3){border-left:0}.plan-sum>div:nth-child(n+3){border-top:1px solid var(--line-2)}}
.plan-tt{max-height:620px;overflow:auto}
.plan-tt table{min-width:620px}
.plan-tt thead th{position:sticky;top:0;z-index:1}
.plan-week td{background:var(--tint);font-size:12px;font-weight:600;color:var(--ink-2);padding-block:6px}
.plan-tt tr.past td{color:var(--muted)}
.plan-tt tr.today td{background:var(--accent-soft)}
.plan-ls{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;font-size:13.5px}
.nowrap{white-space:nowrap}
.plan-strip{display:flex;justify-content:space-between;align-items:center;gap:10px 18px;flex-wrap:wrap;padding:12px 16px}
.plan-strip-a{display:flex;gap:12px;align-items:center;min-width:0}
.plan-strip .bad{color:var(--bad)}

/* ---- Nút nhỏ (.btn.xs) cho thao tác trong ô bảng; nút nhấn mạnh nhẹ (.primary-soft) */
.btn.xs{min-height:28px;padding:0 10px;gap:5px;font-size:12.5px;border-radius:7px;box-shadow:none}
.btn.xs svg.i{width:14px;height:14px}
.btn.primary-soft{background:var(--brand-soft);color:var(--brand);border-color:transparent}
.btn.primary-soft:hover{background:var(--brand);color:var(--brand-ink)}
.stu-acts{display:flex;flex-wrap:nowrap;gap:6px;margin-top:6px}

/* ---- Học viên: hộp nhắc học tiếp sau đăng nhập (dialog.welcome), lịch của tôi (.myplan); chữ và nút to, dễ bấm */
.btn.xl{min-height:56px;padding:0 26px;font-size:17px;border-radius:14px}
.ico.lg{width:56px;height:56px;border-radius:16px}
.ico.lg svg.i{width:28px;height:28px}
dialog.welcome{border:0;padding:0;border-radius:20px;max-width:min(560px,calc(100vw - 32px));width:100%;box-shadow:var(--sh-lg);background:var(--surface);color:var(--ink)}
dialog.welcome::backdrop{background:rgba(20,32,25,.45)}
.welcome-b{padding:28px;display:flex;flex-direction:column;gap:12px;font-size:16px}
.welcome-b h2{font-size:24px}
.welcome-last{color:var(--muted)}
.welcome-lesson{font-size:19px;font-family:var(--f-display)}
.welcome-acts{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.welcome-acts .btn{width:100%}
.myplan{border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:4px;font-size:14.5px;border:1px solid var(--line);background:var(--subtle)}
.myplan.ok{background:var(--ok-soft);border-color:#BFE2CB}
.myplan.info{background:var(--info-soft);border-color:#C9D8F0}
.myplan.warn{background:var(--warn-soft);border-color:#F2DDB0}
.myplan.bad{background:var(--bad-soft);border-color:#F1C4BF}
.myplan-st{display:flex;gap:8px;align-items:center;font-size:15.5px}
.myplan.ok .myplan-st svg{color:var(--ok)} .myplan.info .myplan-st svg{color:var(--info)} .myplan.warn .myplan-st svg{color:var(--warn)} .myplan.bad .myplan-st svg{color:var(--bad)}
.ritem .t .tag{margin-left:6px;vertical-align:middle;font-size:11.5px}
.resume .myplan{margin-top:4px}

/* ---- Thu ngân: thu tiền, phiếu thu (in được), sổ thu, dự báo thu (Views/Cashier) */
.cash-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:16px;align-items:start}
@media (max-width:900px){.cash-grid{grid-template-columns:minmax(0,1fr)}}
.cash-kv{padding:14px 18px;gap:10px 16px}
.fc-table{min-width:980px}
.fc-table td:first-child{min-width:240px}
.fc-table td:nth-child(2){white-space:nowrap}
.cash-rem{font-size:20px;color:var(--bad)}
.cash-filter .field{min-width:180px}
.cash-sum{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
.cash-sum>div:nth-child(n){border-top:0}
.bad{color:var(--bad)} b.ok{color:var(--ok)}
.size-line{gap:8px;align-items:center}
.cash-btn{margin:4px 0}
.receipt{max-width:720px;padding:28px 32px;position:relative;display:flex;flex-direction:column;gap:14px}
.receipt.is-void{opacity:.85}
.rc-h{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:12px}
.rc-org{font-family:var(--f-display);font-size:17px}
.rc-no{display:flex;flex-direction:column;align-items:flex-end}
.rc-no b{font-size:15px}
.rc-title{text-align:center;font-size:24px;letter-spacing:.08em}
.rc-date{text-align:center;color:var(--muted);font-style:italic;margin-top:-8px}
.rc-kv{display:grid;grid-template-columns:150px minmax(0,1fr);gap:10px 16px;margin:0;font-size:15px}
.rc-kv dt{color:var(--muted)}
.rc-kv dd{margin:0;border-bottom:1px dotted var(--line-strong);padding-bottom:4px}
.rc-amt{font-size:20px}
.rc-sign{display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:center;margin-top:10px;min-height:120px}
.rc-sign>div{display:flex;flex-direction:column;gap:2px}
.rc-sname{margin-top:auto;font-weight:600}
.rc-stamp{position:absolute;top:38%;left:50%;transform:translate(-50%,-50%) rotate(-12deg);border:4px solid var(--bad);color:var(--bad);font-family:var(--f-display);font-size:40px;font-weight:700;padding:4px 22px;border-radius:12px;opacity:.55;pointer-events:none}
.rc-void{color:var(--bad)}
details.void-box>summary{cursor:pointer;list-style:none}
details.void-box>summary::-webkit-details-marker{display:none}
@media print{
  .side,.app-top,.no-print,.toast,.tour-pop,.pub-top,.pub-foot{display:none!important}
  .app{display:block}.app-body{padding:0;max-width:none}
  body,html{background:#fff}
  .card{box-shadow:none;border-color:#999}
  .receipt{max-width:none;border:0}
}

/* ---- Thanh bên gọn (v3): chuyển không gian Học / Dạy / Quản trị ở chân thanh bên */
.spaces{display:flex;padding:3px;border-radius:10px;background:var(--tint);gap:2px}
.spaces a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 4px;border-radius:8px;text-decoration:none;font-size:11.5px;font-weight:600;color:var(--muted)}
.spaces a:hover{color:var(--ink)}
.spaces a[aria-current="true"]{background:var(--surface);color:var(--brand);box-shadow:0 1px 2px rgba(16,32,24,.12)}
.side-foot .acts{display:flex;gap:4px;align-items:center}
.side-foot .acts form{margin-left:auto}
/* ---- Dashboard học tập (lớp / toàn hệ thống) */
.ins .kpis{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.ins .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.ins .kpis{grid-template-columns:minmax(0,1fr)}}
.ins .kpi b small{font-size:14px;font-weight:500}
.ins-two{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:1150px){.ins-two{grid-template-columns:minmax(0,1fr)}}
.ins-charts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:24px}
.ins .strip{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));border:1px solid var(--line-2);border-radius:var(--r);background:var(--surface)}
.ins .strip .k{font-size:12.5px;color:var(--muted);font-weight:500}
.ins .strip b{font-size:20px}
.ins h4{font-size:14px}
.ins-bullets{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:6px;color:var(--ink-2)}
.ins-calc{background:var(--subtle)}
.ins-scroll{max-height:560px;overflow:auto}
.ins-scroll thead th{position:sticky;top:0;background:var(--surface);z-index:1}
.ins-data summary{cursor:pointer;color:var(--brand);font-weight:600;margin-bottom:8px}
.ins-filter{width:220px;max-width:100%}
.ins-list{list-style:none;margin:0;padding:6px 0}
.ins-list li{display:flex;align-items:center;gap:10px;padding:9px 18px;border-top:1px solid var(--line-2);flex-wrap:wrap}
.ins-list li:first-child{border-top:0}
.ins-list .t{font-weight:600;font-size:13.5px}
.avatar.sm{width:28px;height:28px;font-size:11px;flex:none}
.live-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--ok);margin-right:6px;vertical-align:middle;box-shadow:0 0 0 0 rgba(31,138,76,.5);animation:livepulse 2s infinite}
.live-dot[hidden]{display:none}
@keyframes livepulse{0%{box-shadow:0 0 0 0 rgba(31,138,76,.45)}70%{box-shadow:0 0 0 7px rgba(31,138,76,0)}100%{box-shadow:0 0 0 0 rgba(31,138,76,0)}}
@media (prefers-reduced-motion:reduce){.live-dot{animation:none}}
.hbar{display:grid;grid-template-columns:minmax(110px,38%) minmax(0,1fr) auto;gap:12px;align-items:center;text-decoration:none;color:inherit}
.hbar .bar{height:10px}
.hbar.top:hover span{color:var(--brand)}
.hbar span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
tr.today td{background:var(--brand-soft)}
.sorthead{cursor:pointer;user-select:none;white-space:nowrap}
.sorthead::after{content:" \2195";color:var(--muted);font-weight:400}
.sorthead[aria-sort="ascending"]::after{content:" \2191";color:var(--brand)}
.sorthead[aria-sort="descending"]::after{content:" \2193";color:var(--brand)}
/* biểu đồ cột (MiniChart) */
.mc{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px;margin-top:8px}
.mc-y{display:flex;flex-direction:column;justify-content:space-between;height:150px;font-size:11px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.mc-plot{position:relative;display:flex;align-items:flex-end;gap:2px;height:150px;padding-bottom:0;border-bottom:1px solid var(--line);background:linear-gradient(to bottom,var(--line-2) 1px,transparent 1px) 0 0/100% 50%;margin-bottom:20px}
.mc-col{position:relative;flex:1 1 0;min-width:0;height:100%;display:flex;align-items:flex-end;cursor:default}
.mc-col i{display:block;width:100%;max-width:28px;margin:0 auto;background:var(--brand);border-radius:4px 4px 0 0;opacity:.85}
.mc-col.today i{opacity:1;background:var(--accent)}
.mc-col:hover i{opacity:1}
.mc-col:hover{background:var(--tint)}
.mc-col span{position:absolute;top:100%;left:50%;transform:translateX(-50%);margin-top:4px;font-size:10.5px;color:var(--muted);white-space:nowrap}
/* thanh chồng theo buổi */
.stack{display:flex;gap:2px;height:12px;border-radius:999px;background:var(--tint);overflow:hidden;min-width:80px}
.stack i{display:block;height:100%}
.stack .done,.legend .done{background:var(--brand)}
.stack .doing,.legend .doing{background:var(--info)}
.stack .stuck,.legend .stuck{background:var(--bad)}
.legend .notyet{background:var(--tint);border:1px solid var(--line-strong)}
.fn-table td:first-child{min-width:220px}
/* ---- Điểm danh giữa giờ (ảnh màn hình) + ghi hình khi làm bài kiểm tra */
.attend-scr{display:flex;flex-direction:column;gap:4px}
.attend-scr img{display:block;width:100%;max-height:200px;object-fit:contain;border-radius:10px;background:#0E1A14}
.pr-box{width:min(560px,100%)}
.pr-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.pr-step{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.pr-step [data-pr-ok]{white-space:nowrap}
.pr-cam{width:160px;aspect-ratio:4/3;object-fit:cover;border-radius:10px;background:#0E1A14;transform:scaleX(-1);align-self:flex-end}
@media (max-width:520px){.pr-step{grid-template-columns:auto minmax(0,1fr)}.pr-step .btn,.pr-step .tag{grid-column:2;justify-self:start}}
.mid-opts{margin-top:8px}
.jr-ph.screen img{object-fit:contain;background:#0E1A14}
.jr-ph.mid span:last-child{color:var(--brand);font-weight:600}
.jr-recs{display:flex;flex-direction:column;gap:18px}
.jr-take{display:flex;flex-direction:column;gap:8px}
.jr-rec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:14px}
.jr-rec{display:flex;flex-direction:column;gap:6px;min-width:0}
.jr-rec video{display:block;width:100%;aspect-ratio:16/10;border-radius:10px;background:#0E1A14}
.jr-rec .jr-ph.gone .jr-gone{aspect-ratio:16/10}
/* =====================================================================================================
   Giao diện v4: nút có màu theo chức năng, đầu trang / đầu thẻ có nền riêng để tách khối, chữ nhấn rõ hơn.
   Màu nút đọc từ biểu tượng đứng đầu (svg[data-ic]): tiền = hổ phách, tệp / danh sách = xanh dương, lịch / giờ / media = tím,
   người / trò chuyện = xanh ngọc, tiến độ / lưu / xác nhận = xanh lá, xóa = đỏ; nút không có biểu tượng giữ nền trắng.
   ===================================================================================================== */
:root{
  --bg:#EEF3EF; --brand-dark:#163828;
  --c-green:#1E7348; --c-green-s:#E5F4EB; --c-green-b:#B9DFC8;
  --c-blue:#2456A3; --c-blue-s:#E8F0FC; --c-blue-b:#C3D5F1;
  --c-amber:#8F5A00; --c-amber-s:#FFF3D9; --c-amber-b:#EFD49B;
  --c-violet:#5A44AE; --c-violet-s:#F0ECFC; --c-violet-b:#D3C9F2;
  --c-teal:#0D6C64; --c-teal-s:#E0F3F1; --c-teal-b:#B3DED8;
  --c-red:#B42318; --c-red-s:#FDECEA; --c-red-b:#F1C4BF;
  --sh:0 1px 2px rgba(16,32,24,.05),0 3px 10px rgba(16,32,24,.035);
  --sh-btn:0 1px 0 rgba(255,255,255,.6) inset,0 1px 2px rgba(16,32,24,.08);
}
html,body{background:var(--bg)}
body{background:radial-gradient(1200px 500px at 100% -10%,#E2EEE6 0%,rgba(226,238,230,0) 60%) fixed,var(--bg)}

/* ---- nút */
.btn{--bc:var(--ink);--bs:var(--surface);--bb:var(--line-strong);--bh:var(--subtle);
  background:var(--bs);border-color:var(--bb);color:var(--bc);box-shadow:var(--sh-btn);transition:background .12s,border-color .12s,box-shadow .12s,transform .06s}
.btn:hover{background:var(--bh);border-color:color-mix(in srgb,var(--bc) 35%,var(--bb))}
.btn:active{transform:translateY(1px)}
.btn svg.i{color:var(--bc)}
.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="chart"],> svg[data-ic="route"],> svg[data-ic="check"],> svg[data-ic="grade"],> svg[data-ic="play"],> svg[data-ic="rocket"],> svg[data-ic="save"],> svg[data-ic="target"],> svg[data-ic="up"],> svg[data-ic="plus"]){--bc:var(--c-green);--bs:var(--c-green-s);--bb:var(--c-green-b);--bh:#D6EEDF}
.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="file"],> svg[data-ic="upload"],> svg[data-ic="list"],> svg[data-ic="link"],> svg[data-ic="copy"],> svg[data-ic="eye"],> svg[data-ic="search"],> svg[data-ic="layers"],> svg[data-ic="folder"],> svg[data-ic="book"],> svg[data-ic="summary"],> svg[data-ic="info"]){--bc:var(--c-blue);--bs:var(--c-blue-s);--bb:var(--c-blue-b);--bh:#DAE6FA}
.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="wallet"],> svg[data-ic="tag"],> svg[data-ic="gift"],> svg[data-ic="bulb"],> svg[data-ic="key"],> svg[data-ic="undo"]){--bc:var(--c-amber);--bs:var(--c-amber-s);--bb:var(--c-amber-b);--bh:#FDEAC3}
.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="cal"],> svg[data-ic="calendar"],> svg[data-ic="clock"],> svg[data-ic="live"],> svg[data-ic="video"],> svg[data-ic="camera"],> svg[data-ic="audio"],> svg[data-ic="hand"]){--bc:var(--c-violet);--bs:var(--c-violet-s);--bb:var(--c-violet-b);--bh:#E5DEFA}
.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="chat"],> svg[data-ic="partner"],> svg[data-ic="users"],> svg[data-ic="user"],> svg[data-ic="teach"],> svg[data-ic="classes"],> svg[data-ic="send"],> svg[data-ic="phone"]){--bc:var(--c-teal);--bs:var(--c-teal-s);--bb:var(--c-teal-b);--bh:#CFECE8}
.btn:not(.primary):not(.accent):not(.ghost):has(> svg[data-ic="trash"]){--bc:var(--c-red);--bs:var(--c-red-s);--bb:var(--c-red-b);--bh:#FADAD6}
.btn.primary{--bc:#FFFFFF;background:linear-gradient(180deg,#2B6247 0%,var(--brand) 100%);border-color:var(--brand-dark);color:#FFFFFF;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 2px 6px rgba(31,74,55,.28)}
.btn.primary:hover{background:linear-gradient(180deg,#33704F 0%,#245540 100%)}
.btn.accent{--bc:var(--accent-ink);background:linear-gradient(180deg,#F2BE5C 0%,var(--accent) 100%);border-color:#D3962A;box-shadow:0 2px 6px rgba(233,169,58,.3)}
.btn.primary-soft{--bc:var(--brand);--bs:var(--brand-soft);--bb:#C4DACE;--bh:#D7E8DE;font-weight:600}
.btn.danger{--bc:var(--c-red);--bs:var(--c-red-s);--bb:var(--c-red-b);--bh:#FADAD6}
.btn.danger.solid{--bc:#FFFFFF;background:linear-gradient(180deg,#C93A2E,var(--bad));color:#FFFFFF}
.btn.ghost{--bs:transparent;--bb:transparent;box-shadow:none}
.btn.ghost:hover{background:var(--tint);border-color:transparent}
.chip[aria-pressed="true"]{background:linear-gradient(180deg,#2B6247,var(--brand));box-shadow:0 1px 4px rgba(31,74,55,.25)}
.seg{background:#E3ECE6}
.seg [aria-pressed="true"],.seg [aria-current="page"]{color:var(--brand);box-shadow:0 1px 3px rgba(16,32,24,.14)}

/* ---- đầu trang: dải nền riêng */
.page-h{position:relative;overflow:hidden;align-items:center;padding:20px 24px;border:1px solid #DCE7E0;border-radius:18px;
  background:linear-gradient(115deg,#FFFFFF 0%,#F4F9F6 50%,#E4F0E8 100%);box-shadow:var(--sh)}
.page-h::after{content:"";position:absolute;right:-60px;top:-80px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(233,169,58,.16),rgba(233,169,58,0) 70%);pointer-events:none}
.page-h > *{position:relative;z-index:1}
.page-h h1{color:var(--brand-dark);font-weight:700}
.page-h .over{color:var(--brand);font-weight:600}
.page-h .sub{font-style:italic;color:#4D5E55}
.page-title .ico.brand{background:linear-gradient(145deg,#2E6A4D,var(--brand-dark));box-shadow:0 4px 12px rgba(31,74,55,.25)}
@media (max-width:640px){.page-h{padding:16px;border-radius:14px}.page-h::after{display:none}}

/* ---- thẻ: đầu thẻ có nền nhạt, chân thẻ nền xám nhạt */
.card{border-color:#DCE5DF}
.card-h{background:linear-gradient(180deg,#F5F9F6 0%,#FBFCFB 100%);border-bottom-color:#E3EBE5;border-radius:var(--r) var(--r) 0 0}
details.card > summary.card-h{border-radius:var(--r)}
details.card[open] > summary.card-h{border-radius:var(--r) var(--r) 0 0}
.card-h h3{color:var(--brand-dark);font-weight:650}
.card-h h3 svg{color:var(--brand)}
.card-h .xs.muted,.card-h p.muted{font-style:italic}
.card-h .count{background:var(--brand-soft);color:var(--brand)}
.card-f{background:#F3F7F4}

/* ---- bảng */
th{background:#EEF4F0;color:#3B5046;border-bottom:1px solid #DDE7E0}
tbody tr:nth-child(even) > td{background:#FBFCFB}
tbody tr:hover > td{background:#F1F7F3}
td .t{font-weight:650;color:var(--ink)}
td .s{font-style:italic}

/* ---- số liệu */
.kpi{position:relative;overflow:hidden}
.kpi::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--line-strong)}
.kpi:has(.ico.green)::before{background:var(--ok)} .kpi:has(.ico.blue)::before{background:var(--info)} .kpi:has(.ico.amber)::before{background:var(--accent)} .kpi:has(.ico.red)::before{background:var(--bad)} .kpi:has(.ico.brand)::before{background:var(--brand)}
.kpi b{color:var(--brand-dark);font-weight:700}
.kpi .k{color:#4A5B52;font-weight:600}
.strip b{color:var(--brand-dark)}

/* ---- thanh bên */
.side{background:linear-gradient(180deg,#FFFFFF 0%,#F7FAF8 100%)}
.ngroup .label-up{color:var(--brand);opacity:.8}
.nav-a[aria-current="page"]{background:linear-gradient(90deg,#DCEBE2 0%,#EEF5F0 100%);color:var(--brand-dark);font-weight:650;box-shadow:inset 3px 0 0 var(--brand)}
.nav-a:hover svg{color:var(--brand)}
.logo-mark{background:linear-gradient(145deg,#2E6A4D,var(--brand-dark));box-shadow:0 2px 6px rgba(31,74,55,.25)}

/* ---- chữ nhấn */
.hint,.sg-l p,.section-h p,.rule-sentence span{font-style:italic}
.label-up{color:#4A6156}
strong,b{font-weight:650}
.field>label,.lbl{color:var(--brand-dark)}

/* ---- thông báo: viền trái đậm */
.alert{border-left-width:4px}
.alert.warn{border-left-color:var(--accent)} .alert.info{border-left-color:var(--info)} .alert.ok,.alert.ok-alert{border-left-color:var(--ok)} .alert.bad{border-left-color:var(--bad)}
.tag{letter-spacing:.01em}
.empty{background:#F7FAF8}/* dải thông tin ngắn dưới đầu trang (học phí, sĩ số, giáo viên của lớp) */
.meta-box{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;padding:10px 16px;margin-top:-12px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh)}
.meta-box:empty{display:none}
.meta-box > p{margin:0}
.meta-box > .alert{flex-basis:100%}
.meta-box b{color:var(--brand-dark)}/* tiêu đề mục ngoài thẻ: đậm, có vạch màu đứng trước */
.section-h h2,.section-h > div > h2{display:flex;align-items:center;gap:9px;color:var(--brand-dark);font-weight:700}
.section-h h2::before,.section-h > div > h2::before{content:"";width:4px;height:17px;border-radius:3px;background:linear-gradient(180deg,var(--accent),#D98E1C);flex:none}.btn:not(.primary):not(.accent):not(.danger):not(.ghost):has(> svg[data-ic="lock"]){--bc:var(--c-amber);--bs:var(--c-amber-s);--bb:var(--c-amber-b);--bh:#FDEAC3}/* khung bảng làm điểm neo cho phần tử định vị tuyệt đối bên trong (nhãn .sr của cột thao tác) để không kéo giãn trang trên điện thoại */
.table-box{position:relative}.alert > div{min-width:0;overflow-wrap:anywhere}
/* ---- trình soạn: thông tin buổi gọn trên một hàng */
.lesson-row{display:grid;grid-template-columns:minmax(0,2fr) minmax(160px,1fr) auto;gap:14px;align-items:end}
.mins-in{display:flex;gap:8px;align-items:center;flex-wrap:nowrap}
.mins-in input{width:84px;flex:none}
.mins-in .chips{flex-wrap:nowrap;gap:4px}
.mins-in .chip{min-height:36px;padding:0 10px}
@media (max-width:980px){.lesson-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.lesson-row > .field:first-child{grid-column:1/-1}}
@media (max-width:560px){.lesson-row{grid-template-columns:minmax(0,1fr)}.mins-in{flex-wrap:wrap}}
.lesson-opts{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}
.opt-pill{display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;min-height:38px;padding:4px 14px;border:1px solid var(--line-strong);border-radius:999px;background:var(--surface);font-size:13px;font-weight:600;cursor:pointer;color:var(--ink-2)}
.opt-pill.on{background:var(--brand-soft);border-color:#B9D6C5;color:var(--brand-dark)}
.opt-pill .inl{gap:6px}
.opt-pill .ex-num{width:68px;min-height:30px;padding:2px 8px}
.opt-pill svg.i{color:var(--brand)}
/* =====================================================================================================
   Giao diện tối: <html data-theme="dark"> (nút mặt trăng / mặt trời ở chân thanh bên). Định nghĩa lại bộ màu,
   rồi ghi đè các chỗ còn dùng màu cứng của giao diện sáng. Giấy viết tay, chứng nhận, mã QR giữ nền sáng.
   ===================================================================================================== */
.theme-btn .theme-sun{display:none}
:root[data-theme="dark"] .theme-btn .theme-sun{display:block}
:root[data-theme="dark"] .theme-btn .theme-moon{display:none}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0E1512; --surface:#151F1A; --subtle:#19241F; --tint:#1E2B24;
  --ink:#E3ECE6; --ink-2:#C2D0C7; --muted:#93A69B; --line:#263530; --line-2:#1F2C26; --line-strong:#344740;
  --brand:#3C9A6D; --brand-hover:#48AA7B; --brand-soft:#1A3227; --brand-ink:#FFFFFF; --brand-dark:#CFE9DA;
  --accent:#E9A93A; --accent-soft:#36290F; --accent-ink:#2A1B02;
  --ok:#62CF92; --ok-soft:#163023; --warn:#F2BD60; --warn-soft:#33270E; --bad:#F37A6F; --bad-soft:#3A1916; --info:#82AEF3; --info-soft:#152339;
  --off:#F2A266; --off-soft:#38230F; --live:#82AEF3; --live-soft:#152339; --self:#62CF92; --self-soft:#163023;
  --c-green:#83D8A8; --c-green-s:#16301F; --c-green-b:#2B5A3D;
  --c-blue:#9DBFF6; --c-blue-s:#162437; --c-blue-b:#2D4A74;
  --c-amber:#F3C56F; --c-amber-s:#32270E; --c-amber-b:#6A5120;
  --c-violet:#BEB0F6; --c-violet-s:#221C3C; --c-violet-b:#463A79;
  --c-teal:#79D7CD; --c-teal-s:#10302C; --c-teal-b:#245F59;
  --c-red:#F69B92; --c-red-s:#391A17; --c-red-b:#6D2C26;
  --sh:0 1px 2px rgba(0,0,0,.35),0 3px 10px rgba(0,0,0,.25);
  --sh-lg:0 14px 36px rgba(0,0,0,.5);
  --sh-btn:0 1px 2px rgba(0,0,0,.35);
}
:root[data-theme="dark"] body{background:radial-gradient(1200px 500px at 100% -10%,#15271E 0%,rgba(21,39,30,0) 60%) fixed,var(--bg)}
:root[data-theme="dark"] body::before{background:var(--bg)}
:root[data-theme="dark"] input::placeholder,:root[data-theme="dark"] textarea::placeholder{color:#6F8278}
:root[data-theme="dark"] select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2393A69B' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")}
:root[data-theme="dark"] .switch input{background:#3A4C43}
:root[data-theme="dark"] .app-top{background:rgba(14,21,18,.86)}
:root[data-theme="dark"] .side{background:linear-gradient(180deg,#141E19 0%,#111915 100%)}
:root[data-theme="dark"] .nav-a[aria-current="page"]{background:linear-gradient(90deg,#1E3A2C 0%,#172A21 100%)}
:root[data-theme="dark"] .logo-mark,:root[data-theme="dark"] .page-title .ico.brand{background:linear-gradient(145deg,#3C9A6D,#24624A)}
:root[data-theme="dark"] .page-h{border-color:var(--line);background:linear-gradient(115deg,#16211C 0%,#18271F 55%,#1C3328 100%)}
:root[data-theme="dark"] .page-h .sub{color:var(--muted)}
:root[data-theme="dark"] .card{border-color:var(--line)}
:root[data-theme="dark"] .card-h{background:linear-gradient(180deg,#1A2620 0%,#17211C 100%);border-bottom-color:var(--line)}
:root[data-theme="dark"] .card-f{background:#121B17}
:root[data-theme="dark"] th{background:#1A2620;color:var(--ink-2);border-bottom-color:var(--line)}
:root[data-theme="dark"] tbody tr:nth-child(even) > td{background:#17211C}
:root[data-theme="dark"] tbody tr:hover > td{background:#1C2A23}
:root[data-theme="dark"] .seg{background:#1E2B24}
:root[data-theme="dark"] .empty{background:#151F1A}
:root[data-theme="dark"] .label-up{color:#8FB3A0}
:root[data-theme="dark"] .btn:not(.primary):not(.accent):not(.danger.solid):hover{background:color-mix(in srgb,var(--bc) 16%,var(--bs))}
:root[data-theme="dark"] .btn.primary{background:linear-gradient(180deg,#3E9C6F 0%,#2D7D58 100%);border-color:#2A6B4C}
:root[data-theme="dark"] .btn.primary:hover{background:linear-gradient(180deg,#4AAA7C 0%,#33895F 100%)}
:root[data-theme="dark"] .btn.primary-soft{--bb:#2D5A43}
:root[data-theme="dark"] .chip[aria-pressed="true"]{background:linear-gradient(180deg,#3E9C6F,#2D7D58)}
:root[data-theme="dark"] .opt-pill.on{border-color:#2D5A43}
:root[data-theme="dark"] .alert.warn{border-color:#5A4518}
:root[data-theme="dark"] .alert.info{border-color:#2A4166}
:root[data-theme="dark"] .alert.ok{border-color:#2A5A3E}
:root[data-theme="dark"] .alert.bad{border-color:#5E2A25}
:root[data-theme="dark"] .alert.warn{border-left-color:var(--accent)} :root[data-theme="dark"] .alert.info{border-left-color:var(--info)} :root[data-theme="dark"] .alert.ok,:root[data-theme="dark"] .alert.ok-alert{border-left-color:var(--ok)} :root[data-theme="dark"] .alert.bad{border-left-color:var(--bad)}
:root[data-theme="dark"] .typecard[aria-pressed="true"],:root[data-theme="dark"] .step[aria-current="page"],:root[data-theme="dark"] .ritem.now{background:#1A2B22}
:root[data-theme="dark"] .qitem.right{border-color:#2F6B48;background:#142A1E}
:root[data-theme="dark"] .qitem.wrong{border-color:#6E302A;background:#2C1614}
:root[data-theme="dark"] .w:hover{background:#4A3A16}
:root[data-theme="dark"] .md mark{background:#5C4A12}
:root[data-theme="dark"] .rte-area table,:root[data-theme="dark"] .rte-pop,:root[data-theme="dark"] .rte-gc,:root[data-theme="dark"] .rte-ib-h,:root[data-theme="dark"] .rte-ib-bar{background:var(--surface)}
:root[data-theme="dark"] .bedit,:root[data-theme="dark"] .bedit.check{background:#221E10;border-color:#4F431C}
:root[data-theme="dark"] .bedit.folded{background:#26210F}
:root[data-theme="dark"] .bedit-h,:root[data-theme="dark"] .bedit.folded .bedit-h{background:#2E2812}
:root[data-theme="dark"] #gateCard{background:#24130F;border-color:#5A2C26}
:root[data-theme="dark"] #gateCard > .card-h{background:#30180F;border-bottom-color:#5A2C26}
:root[data-theme="dark"] .tour-dots i.past{background:#3E6A54}
:root[data-theme="dark"] .toast{background:#E3ECE6;color:#0E1512}
:root[data-theme="dark"] .tip{background:#E3ECE6;color:#0E1512}
:root[data-theme="dark"] tr.today td{background:#1A3227}
:root[data-theme="dark"] .ins .strip{background:var(--surface)}
:root[data-theme="dark"] .mc-col.today i{background:var(--accent)}:root[data-theme="dark"] .pub-top{background:rgba(14,21,18,.88)}
:root[data-theme="dark"] .bedit-tt:hover{background:rgba(255,255,255,.06)}
:root[data-theme="dark"] #gateCard .rule-sentence{background:rgba(0,0,0,.25);border-color:#5A2C26}
:root[data-theme="dark"] .bedit.check{background:#221E10}:root[data-theme="dark"] .chat-messages{background:#111A16}
/* ---- nhóm chức năng (quản trị) */
.feat-side{display:flex;flex-direction:column;gap:8px}
.feat-side + .feat-side{margin-top:6px}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:8px}
.feat-item{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);cursor:pointer;transition:border-color .12s,background .12s}
.feat-item:hover{border-color:var(--line-strong)}
.feat-item:has(input:checked){background:var(--brand-soft);border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.feat-item input{margin-top:2px}
.feat-item svg.i{color:var(--brand);margin-top:2px}
.feat-item b{display:block;font-size:13.5px}
.feat-item small{display:block;font-size:12px;color:var(--muted);font-style:italic;line-height:1.4}
[data-feat-box].off{opacity:.55}
.feat-cols{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,1fr)}
.feat-cols > .feat-members{border-left:1px solid var(--line-2);background:var(--subtle);border-radius:0 0 var(--r) 0}
@media (max-width:1000px){.feat-cols{grid-template-columns:minmax(0,1fr)}.feat-cols > .feat-members{border-left:0;border-top:1px solid var(--line-2);border-radius:0 0 var(--r) var(--r)}}
.feat-mlist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;max-height:320px;overflow:auto}
.feat-mlist li{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:10px;background:var(--surface);border:1px solid var(--line-2)}
.section-h .count{font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:1px 8px}/* trình soạn: các thiết lập chấm bài (phải nộp, xong khi, số từ, thời lượng ghi âm, điểm tối đa) trên một hàng */
.task-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:12px 14px;align-items:end}
/* ---- trình soạn v2: khối audio / video một hàng, câu hỏi giữa bài nằm trong khối, tự luận / thực hành / bài kiểm tra gọn */
.vedit-cfg{flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px 24px}
.vedit-src{flex:0 1 auto}
.vedit-nums{gap:8px 20px}
.vedit.is-video.has-prev .vedit-cfg{flex-direction:column;align-items:flex-start}
.vchecks{margin-top:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);display:flex;flex-direction:column;gap:8px}
.vchecks-h{display:flex;align-items:center;gap:8px}
.vchecks-h b{display:inline-flex;gap:6px;align-items:center;color:var(--brand-dark)}
.vchecks-h .count{font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:1px 8px}
.vcheck{border:1px solid var(--line-2);border-left:3px solid var(--accent);border-radius:10px;padding:10px 12px;background:var(--subtle);display:flex;flex-direction:column;gap:8px}
.vcheck-row{display:grid;grid-template-columns:auto 120px 120px minmax(0,1fr) auto auto;gap:10px;align-items:end}
.vcheck-n{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--warn);font-weight:700;font-size:12.5px;align-self:center}
.vcheck-opt{white-space:nowrap;padding-bottom:9px}
.vcheck-body{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:12px;align-items:start;padding-left:36px}
.vcheck .field .lbl{font-size:12.5px}
@media (max-width:900px){.vcheck-row{grid-template-columns:auto 1fr 1fr}.vcheck-q{grid-column:1/-1}.vcheck-body{grid-template-columns:1fr;padding-left:0}}
.task-top{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px 16px;align-items:end}
@media (max-width:760px){.task-top{grid-template-columns:minmax(0,1fr)}}
.task-row > .qmedia{grid-column:span 2}
.task-top > .qmedia,.task-row > .qmedia{margin:0;padding:8px 12px;align-self:end}
.task-top > .qmedia > label,.task-row > .qmedia > label{font-size:12.5px}
@media (max-width:560px){.task-row > .qmedia{grid-column:auto}}
/* bài kiểm tra: các tùy chọn thành lưới thẻ thay vì một cột dài */
.ex-opts{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,330px),1fr));gap:8px;border:0;border-radius:0;overflow:visible}
.ex-opt{border:1px solid var(--line);border-radius:12px;background:var(--surface);align-content:flex-start;padding:10px 12px}
.ex-opt:first-child{border-top:1px solid var(--line)}
.ex-opt.on{background:var(--brand-soft);border-color:color-mix(in srgb,var(--brand) 30%,var(--line))}
.ex-opt>p{font-style:italic;line-height:1.4}.vedit-nums{gap:8px 16px;flex:1 1 auto}
/* ---- câu hỏi giữa bài v2: một hàng gọn (nhãn đứng cạnh ô), lựa chọn 2 cột, giải thích một dòng */
.vcheck{gap:10px;padding:10px 12px}
.vcheck-row{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center}
.vc-in{display:inline-flex;align-items:center;gap:6px;padding:0 10px;min-height:38px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--muted);white-space:nowrap}
.vc-in svg.i{color:var(--brand)}
.vc-in input{width:62px;min-height:30px;padding:2px 4px;border:0;box-shadow:none;background:transparent;text-align:right;font-variant-numeric:tabular-nums}
.vc-in input:focus{box-shadow:none}
.vc-in:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.vc-in .mono{font-size:11.5px}
.vcheck-q{flex:1 1 260px;min-width:0}
.vcheck-opt{padding-bottom:0}
.vcheck-body{display:flex;flex-direction:column;gap:6px;padding-left:38px}
.vcheck-opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 14px}
.vcheck-opts .optrow{margin:0}
.vcheck-opts > .btn{grid-column:1/-1;justify-self:start;width:auto}
.vc-explain{display:flex;align-items:center;gap:8px}
.vc-explain svg.i{color:var(--warn)}
.vc-explain input{flex:1}
@media (max-width:760px){.vcheck-body{padding-left:0}.vcheck-opts{grid-template-columns:minmax(0,1fr)}}

/* ---- bài kiểm tra: tùy chọn kiểu danh sách như cũ, chia 2 cột */
.ex-opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface)}
.ex-opt{border:0;border-top:1px solid var(--line-2);border-radius:0;background:transparent;padding:9px 12px;align-content:flex-start}
.ex-opt:first-child,.ex-opt:nth-child(2){border-top:0}
.ex-opt:nth-child(odd){border-right:1px solid var(--line-2)}
.ex-opt.on{background:var(--subtle);border-color:var(--line-2)}
.ex-opt:first-child{border-top:0}
@media (max-width:900px){.ex-opts{grid-template-columns:minmax(0,1fr)}.ex-opt:nth-child(2){border-top:1px solid var(--line-2)}.ex-opt:nth-child(odd){border-right:0}}.vcheck-body{align-items:stretch}
.vcheck-opts .optrow input[type=text]{flex:1 1 auto;min-width:0}.vcheck-opts .optrow{flex-wrap:nowrap}
.vcheck-opts .optrow input[type=text]{flex:1 1 0;width:auto}
/* ---- bài kiểm tra: mỗi tùy chọn = nhãn bên trái, ô nhập canh thẳng một cột bên phải, giải thích bên dưới */
.ex-opt{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,300px);column-gap:16px;row-gap:4px;align-items:center}
.ex-opt > label{grid-column:1}
.ex-opt > .ex-opt-v{grid-column:2;justify-self:start;white-space:nowrap}
.ex-opt > p{grid-column:1/-1;margin:0 0 0 26px}
.ex-opt-v .ex-num{width:84px}
/* «Ghi hình» sang cột phải, lấp ô trống cuối */
.ex-opts > .ex-opt[data-k="record"]{grid-column:2}
@media (max-width:900px){.ex-opts > .ex-opt[data-k="record"]{grid-column:auto}}
@media (max-width:560px){.ex-opt{grid-template-columns:minmax(0,1fr)}.ex-opt > .ex-opt-v{grid-column:1;margin-left:26px}}.ex-opt > .ex-l{grid-column:1;display:flex;align-items:center;gap:12px;min-width:0}
.ex-l > label{font-weight:600}
.ex-pre{margin-left:auto;color:var(--muted);font-size:13px;white-space:nowrap;text-align:right}
@media (max-width:560px){.ex-pre{margin-left:0}}/* 10 tùy chọn (thêm «Câu hỏi sai đề»): hai cột đã chẵn, «Ghi hình» về chỗ tự nhiên */
.ex-opts > .ex-opt[data-k="record"]{grid-column:auto}
.ex-opt-v select{max-width:100%}
.ex-l > label svg.i{color:var(--warn)}
/* xem lại bài kiểm tra: câu sai đề */
.ex-q.flawed{border-color:var(--warn);background:var(--warn-soft)}
.ex-flaw{display:inline-flex;margin-left:6px}
/* ---- bài kiểm tra v3: nhãn không bị bẻ chữ — chữ dẫn («tỷ lệ trùng tối đa»…) xuống dòng dưới nhãn, cột phần nhập hẹp hơn, khung hẹp thì 1 cột */
.ex-opt{grid-template-columns:minmax(0,1fr) minmax(180px,240px)}
.ex-opt > .ex-l{flex-wrap:wrap;row-gap:2px}
.ex-l > label{min-width:0}
.ex-l > label > span{white-space:normal}
.ex-pre{flex-basis:100%;margin-left:26px;text-align:left;font-size:12.5px;white-space:normal}
.ex-opt-v{flex-wrap:nowrap}
.ex-opt-v select{width:100%;max-width:240px}
.field:has(> .ex-opts){container-type:inline-size}
@container (max-width:1100px){
  .ex-opts{grid-template-columns:minmax(0,1fr)}
  .ex-opts > .ex-opt{border-right:0}
  .ex-opts > .ex-opt:nth-child(2){border-top:1px solid var(--line-2)}
}@container (max-width:1100px){ .ex-opts > .ex-opt{grid-template-columns:minmax(0,520px) minmax(180px,240px);justify-content:start} }
/* ---- thực hành / tự luận: «tệp kèm đề» và «dạng bài làm» là hai ô cùng kiểu, cao bằng nhau, nằm một hàng */
.task-top{grid-template-columns:auto minmax(0,1fr);align-items:stretch;gap:12px}
.task-top > .field{margin:0;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);display:flex;flex-direction:column;justify-content:center;gap:8px}
.task-top > .field > label,.qmedia.compact > label{font-size:12.5px;font-weight:600;color:var(--brand-dark)}
.qmedia.compact{border-style:solid;background:var(--surface)}
.qmedia.compact > .row{gap:8px;flex-wrap:nowrap}
.pr-answers{flex-wrap:wrap;gap:6px 8px}
.pr-ans{min-height:34px;padding:4px 12px;border-radius:999px;font-size:13.5px;gap:6px;white-space:nowrap}
.pr-ans svg.i{color:var(--brand)}
@media (max-width:900px){.task-top{grid-template-columns:minmax(0,1fr)}}/* tự luận: 5 thiết lập nằm trong ô bên phải của hàng [tệp kèm đề | thiết lập] */
.task-top > .task-row.in{align-self:end;grid-template-columns:repeat(auto-fit,minmax(min(100%,112px),1fr))}
/* thiếu chỗ cho 5 ô trên một hàng thì ô tệp kèm đề xuống riêng một dòng, thiết lập chiếm trọn hàng dưới */
.task-top:has(> .task-row.in){display:flex;flex-wrap:wrap;align-items:flex-end}
.task-top:has(> .task-row.in) > .qmedia{flex:0 0 auto}
.task-top > .task-row.in{flex:1 1 calc(var(--n,5) * 128px);min-width:0}
/* bài kiểm tra tự luận / thực hành: dạng bài nộp gói gọn một dòng pill nhỏ */
.task-top > .pr-box{flex:0 0 auto;width:max-content;max-width:100%;align-self:stretch}
.task-top:has(> .pr-box) > .qmedia{align-self:stretch;justify-content:center}
.task-top > .pr-box .pr-answers{flex-wrap:wrap}
.task-top > .pr-box .pr-ans{min-height:30px;padding:3px 10px;font-size:13px}
.task-row .field > label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* thẻ tài khoản cuối thanh bên: tên + vai trò + nút đăng xuất trên một hàng, dải tiện ích chia đều bên dưới */
.me-card{border:1px solid var(--line);border-radius:14px;background:var(--surface);overflow:hidden}
.me-card .me{padding:10px 8px 10px 12px;gap:10px}
.me-card .avatar{flex:none}
.me-card .me-t{flex:1;min-width:0}
.me-card .me-t b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.me-card .me-out{margin:0;flex:none}
.me-card .me-out .btn:hover{color:var(--bad);background:var(--bad-soft)}
.side-foot .me-card .acts{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:0;border-top:1px solid var(--line);background:var(--subtle)}
.side-foot .me-card .acts > *{border-radius:0;min-height:36px;justify-content:center;width:100%;margin:0}
.side-foot .me-card .acts > * + *{border-left:1px solid var(--line)}
.side-foot .me-card .acts > *:hover{background:var(--surface)}
/* ---- nhật ký học tập: video / âm thanh đã xem + dòng thời gian theo ngày */
.jv{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.jv-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:6px 14px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.jv-row.jv-done{border-color:color-mix(in srgb,var(--ok) 35%,var(--line))}
.jv-main{min-width:0;display:flex;flex-direction:column;gap:6px}
.jv-t{display:flex;gap:8px;align-items:baseline;min-width:0}
.jv-t b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.jv-t .muted{white-space:nowrap}
.jv-bar{position:relative;height:6px;border-radius:99px;background:var(--subtle);overflow:visible}
.jv-bar i{position:absolute;left:0;top:0;bottom:0;border-radius:99px;background:var(--brand)}
.jv-done .jv-bar i{background:var(--ok)}
.jv-bar u{position:absolute;top:-3px;bottom:-3px;width:2px;margin-left:-1px;background:var(--ink-2);opacity:.45;border-radius:2px}
.jv-meta{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center;color:var(--ink-2)}
.jv-meta > span{display:inline-flex;align-items:center;gap:4px}
.jv-meta .bad{color:var(--bad);font-weight:600}
.jv-player{grid-column:1 / -1}
.jv-player video{width:100%;max-height:420px;border-radius:10px;background:#000}
.jv-player audio{width:100%}
@media (max-width:640px){.jv-row{grid-template-columns:auto minmax(0,1fr)}.jv-act{grid-column:1 / -1}}

.tl-filter{display:flex;flex-wrap:wrap;gap:6px}
.tl-filter button{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink-2);font:inherit;font-size:12.5px;cursor:pointer}
.tl-filter button b{font-size:11.5px;color:var(--muted);font-weight:600}
.tl-filter button.on{border-color:var(--brand);background:var(--brand);color:var(--brand-ink)}
.tl-filter button.on b{color:inherit}
.tl-day + .tl-day{margin-top:18px}
.tl-date{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 6px;font-size:13.5px;text-transform:capitalize}
.tl-date .tag{text-transform:none}
.tl{list-style:none;margin:0;padding:0;position:relative}
.tl::before{content:"";position:absolute;left:73px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{display:grid;grid-template-columns:48px 28px minmax(0,1fr);gap:0 12px;align-items:start;padding:5px 0}
.tl-item time{text-align:right;font-family:var(--f-mono);font-size:12px;color:var(--muted);padding-top:9px}
.tl-dot{position:relative;z-index:1;width:28px;height:28px;margin-top:3px;border-radius:50%;display:grid;place-items:center;background:var(--subtle);color:var(--muted);box-shadow:0 0 0 3px var(--surface)}
.tl-item.k-study .tl-dot{background:var(--brand-soft);color:var(--brand)}
.tl-item.k-attend .tl-dot{background:var(--info-soft);color:var(--info)}
.tl-item.k-work .tl-dot{background:var(--ok-soft);color:var(--ok)}
.tl-item.warn .tl-dot{background:var(--warn-soft);color:var(--warn)}
.tl-body{min-width:0;padding:7px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.tl-item.warn .tl-body{border-color:color-mix(in srgb,var(--warn) 40%,var(--line));background:color-mix(in srgb,var(--warn-soft) 45%,var(--surface))}
.tl-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 10px}
.tl-h b{display:inline-flex;align-items:center;gap:6px;font-size:13.5px}
.tl-body p{margin:3px 0 0}
.tl-media{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:3px;font-size:12.5px;color:var(--ink-2)}
.tl-media li{display:flex;align-items:center;gap:6px}
.tl-photos{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.tl-ph{position:relative;display:block;width:132px;height:99px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--subtle)}
.tl-ph img{width:100%;height:100%;object-fit:cover;display:block}
.tl-ph.screen{width:176px}
.tl-ph.screen span{position:absolute;left:6px;bottom:6px;display:inline-flex;align-items:center;gap:4px;padding:2px 7px;border-radius:99px;background:rgba(0,0,0,.6);color:#fff;font-size:11px}
.tl-ph.gone{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--muted);font-size:12px;width:auto;height:auto;padding:8px 12px}
@media (max-width:560px){.tl::before{left:57px}.tl-item{grid-template-columns:34px 28px minmax(0,1fr);gap:0 10px}}

/* trình phát: xem tiếp từ chỗ đã dừng */
.media-resume{display:inline-flex;align-items:center;gap:6px;margin-left:8px;padding:3px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600}
.media-resume .linkbtn{padding:0;border:0;background:none;color:inherit;font:inherit;text-decoration:underline;cursor:pointer}
/* điều kiện qua bài: chưa đạt thì học lại buổi / phần nào */
.gate-back{flex-basis:100%;display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:8px 10px;border-radius:10px;background:var(--surface);border:1px dashed var(--line)}
.gate-back-l{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.gaterow .gate-back select{max-width:260px}
.gate-back-h{flex-basis:100%;font-style:italic}
.cond-backrow{margin-top:4px;font-size:12.5px}
.cond-back{font-weight:600;color:var(--brand);text-decoration:underline;text-underline-offset:2px}
.cond-backrow .ok{color:var(--ok)}
.cond-backrow .warn{color:var(--warn)}
/* ======================================================================================================
   v5 — giao diện theo mẫu thiết kế 30/10: xanh ngọc tươi, thẻ bo tròn lớn, thanh trên có ô tìm kiếm + menu tài khoản,
   trang chủ (hero + tiến độ + danh mục + tính năng + giảng viên) và trang học bài (tab nhóm phần, danh sách nội dung, vòng tiến độ).
   Màu thương hiệu do quản trị đặt (Ui.BrandStyle, in SAU file này) vẫn được ưu tiên.
   ====================================================================================================== */
:root{--brand:#12795C;--brand-hover:#0D654C;--brand-soft:#E2F2EB;--bg:#F5F8F6;--r5:16px}
.t-green{--tn:#16855F;--tb:#E3F4EC}.t-blue{--tn:#2F6FD6;--tb:#E6EFFC}.t-violet{--tn:#7C4DDB;--tb:#EFE8FC}.t-sky{--tn:#2A86C7;--tb:#E4F2FB}.t-amber{--tn:#C77A12;--tb:#FCF1DF}.t-rose{--tn:#D2436B;--tb:#FCE7EE}
:root[data-theme="dark"] .t-green,:root[data-theme="dark"] .t-blue,:root[data-theme="dark"] .t-violet,:root[data-theme="dark"] .t-sky,:root[data-theme="dark"] .t-amber,:root[data-theme="dark"] .t-rose{--tb:color-mix(in srgb,var(--tn) 22%,transparent)}
.ico.t-green,.ico.t-blue,.ico.t-violet,.ico.t-sky,.ico.t-amber,.ico.t-rose,.t-green > .ico,.t-blue > .ico,.t-violet > .ico,.t-sky > .ico,.t-amber > .ico,.t-rose > .ico{background:var(--tb);color:var(--tn)}

/* ---- thanh trên cùng (khung ứng dụng + trang công khai) */
.app-top{background:color-mix(in srgb,var(--surface) 92%,transparent)}
.app-top .in{gap:14px}
.top-search{flex:0 1 560px;display:flex;align-items:center;gap:8px;height:42px;padding:0 10px 0 14px;border:1px solid var(--line);border-radius:12px;background:var(--subtle);color:var(--muted)}
.top-search:focus-within{border-color:var(--brand);background:var(--surface);box-shadow:0 0 0 3px var(--brand-soft)}
.top-search input{flex:1;min-width:0;border:0;background:transparent;outline:0;padding:0;font-size:14px;color:var(--ink);box-shadow:none}
.top-search kbd{font:600 11px var(--f-mono);padding:2px 6px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--muted);white-space:nowrap}
.tm-bar{display:flex;align-items:center;gap:6px}
.tm-menu{position:relative}
.tm-menu > summary{list-style:none;cursor:pointer}
.tm-menu > summary::-webkit-details-marker{display:none}
.tm-menu .tm-chev{opacity:.6;transition:transform .15s}
.tm-menu[open] .tm-chev{transform:rotate(180deg)}
.tm-lang > summary{gap:4px}
.tm-user > summary{display:flex;align-items:center;gap:10px;padding:4px 8px 4px 4px;border-radius:999px;border:1px solid transparent}
.tm-user > summary:hover,.tm-user[open] > summary{background:var(--subtle);border-color:var(--line)}
.tm-user .avatar{width:36px;height:36px;font-size:14px}
.tm-who{display:flex;flex-direction:column;align-items:flex-start;line-height:1.15;min-width:0}
.tm-who b{font-size:13.5px;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tm-role{margin-top:3px;padding:1px 8px;border-radius:999px;font-size:11px;font-weight:700;background:var(--brand);color:var(--brand-ink)}
.tm-role.r-gv{background:#2F6FD6;color:#fff}.tm-role.r-ad{background:#7C4DDB;color:#fff}
.tm-pop{position:absolute;right:0;top:calc(100% + 8px);z-index:60;min-width:220px;padding:6px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--sh-lg);display:flex;flex-direction:column}
.tm-pop form{margin:0}
.tm-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border:0;border-radius:9px;background:none;color:var(--ink-2);font:inherit;font-size:14px;text-decoration:none;cursor:pointer;text-align:left}
.tm-item:hover{background:var(--subtle);color:var(--ink)}
.tm-item.on{color:var(--brand);font-weight:600}
.tm-item.bad{color:var(--bad)}
.tm-sp{display:inline-block;width:16px}
.tm-sep{height:1px;margin:4px 6px;background:var(--line)}
@media (max-width:760px){.top-search kbd,.tm-who,.tm-hide{display:none}.top-search{flex:1 1 auto}}
.page-crumbs{margin:-6px 0 14px;display:flex;flex-wrap:wrap;gap:6px;font-size:12.5px;color:var(--muted)}
.page-crumbs a{color:var(--muted);text-decoration:none}.page-crumbs a:hover{color:var(--brand)}
.page-crumbs .cur{color:var(--ink-2);font-weight:600}.page-crumbs .sep{opacity:.5}

/* ---- thanh bên */
.nav-a{border-radius:11px;padding:10px 12px}
.nav-a[aria-current="page"]{background:var(--brand-soft);color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.side-cheer{position:relative;overflow:hidden;padding:14px 14px 16px;border-radius:14px;background:linear-gradient(150deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 40%,var(--surface)))}
.side-cheer b{display:block;font-family:var(--f-display);font-size:15px;color:var(--brand);max-width:150px}
.side-cheer p{margin:6px 0 0;font-size:12.5px;color:var(--ink-2);max-width:150px}
.side-cheer-art{position:absolute;right:-6px;bottom:-8px;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:color-mix(in srgb,var(--brand) 16%,transparent);color:var(--brand)}
.side-cheer-art svg{width:28px;height:28px}
.side-out{width:100%;border:0;background:none;font:inherit;cursor:pointer;color:var(--muted)}
.side-out:hover{color:var(--bad);background:var(--bad-soft)}

/* ---- trang công khai: đầu trang */
.pub-top{background:color-mix(in srgb,var(--surface) 94%,transparent)}
.pub-nav{gap:6px}
.pub-nav a{position:relative;display:inline-flex;align-items:center;gap:7px;padding:10px 12px;border-radius:10px;font-weight:600}
.pub-nav a[aria-current="page"]{background:none;color:var(--brand)}
.pub-nav a[aria-current="page"]::after{content:"";position:absolute;left:12px;right:12px;bottom:-9px;height:3px;border-radius:3px;background:var(--brand)}

/* ---- trang chủ */
.h5{display:flex;flex-direction:column;gap:30px}

/* ---- trang học bài */
.l5-head{display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:16px;align-items:center;margin-bottom:18px}
.l5-ico{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(18,121,92,.25)}
.l5-ico svg{width:28px;height:28px}
.l5-ht .over{margin:0 0 2px}
.l5-ht h1{margin:0;font-size:clamp(20px,2.2vw,26px)}
.l5-pbar{margin-top:10px;display:flex;align-items:center;gap:12px;max-width:420px}
.l5-pbar > span{flex:1;height:8px;border-radius:99px;background:var(--subtle);overflow:hidden}
.l5-pbar i{display:block;height:100%;border-radius:99px;background:var(--brand)}
.l5-pbar b{font-size:12.5px;color:var(--brand);white-space:nowrap}
.l5-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.l5-main{gap:16px;min-width:0}
.l5-tabs{display:flex;flex-wrap:wrap;gap:4px;padding:6px;border-radius:14px;background:var(--surface);border:1px solid var(--line)}
.l5-tabs button{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:0;border-radius:10px;background:none;color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.l5-tabs button b{font-size:11.5px;padding:1px 7px;border-radius:99px;background:var(--subtle);color:var(--muted)}
.l5-tabs button:hover{color:var(--ink)}
.l5-tabs button.on{background:var(--brand-soft);color:var(--brand)}
.l5-tabs button.on b{background:var(--brand);color:var(--brand-ink)}
.l5-list .parts{padding:6px 10px 10px;gap:8px}
.l5-list .part{grid-template-columns:34px minmax(0,1fr) auto 16px;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.l5-list .part:first-child{border-top:1px solid var(--line)}
.l5-list .part:hover{border-color:var(--brand)}
.l5-list .part .n{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:13px;background:var(--subtle);color:var(--ink-2)}
.l5-list .part.done .n{background:var(--ok-soft);color:var(--ok)}
.l5-list .part[aria-current] {border-color:var(--brand);background:color-mix(in srgb,var(--brand-soft) 45%,var(--surface))}
.l5-list .part[aria-current] .n{background:var(--brand);color:#fff}
.l5-pt{min-width:0;display:flex;flex-direction:column}
.l5-pt b{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.l5-pt span{font-size:12.5px;color:var(--muted)}
.l5-st > span{display:none;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}
.l5-st .st-done{background:var(--ok-soft);color:var(--ok)}
.l5-st .st-now{background:var(--brand-soft);color:var(--brand)}
.l5-st .st-todo{background:var(--subtle);color:var(--muted)}
.part.done .l5-st .st-done{display:inline-flex}
.part:not(.done)[aria-current] .l5-st .st-now{display:inline-flex}
.part:not(.done):not([aria-current]) .l5-st .st-todo{display:inline-flex}
.l5-chev{color:var(--muted)}
.l5-rail{gap:16px;position:sticky;top:76px}
.l5-prog-b{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;justify-items:center}
.l5-prog-b .l5-kv{width:100%}
.l5-ring{position:relative;width:120px;height:120px}
.l5-ring svg{width:120px;height:120px;transform:rotate(-90deg)}
.l5-ring circle{fill:none;stroke-width:10}
.l5-ring .tr{stroke:var(--subtle)}
.l5-ring .fg{stroke:var(--brand);stroke-linecap:round}
.l5-ring > span{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.l5-ring b{font-family:var(--f-display);font-size:24px;color:var(--brand);line-height:1}
.l5-ring small{margin-top:4px;font-size:10.5px;color:var(--muted);max-width:80px;line-height:1.2}
.l5-kv{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.l5-kv li{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:10px;align-items:center;font-size:13px;color:var(--ink-2)}
.l5-kv .ico{width:30px;height:30px;border-radius:9px}
.l5-kv b{color:var(--ink)}
.l5-help{position:relative;overflow:hidden;padding:18px 18px 20px;border-radius:var(--r5);background:linear-gradient(140deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 35%,var(--surface)));border:1px solid var(--line)}
.l5-help b{display:block;font-family:var(--f-display);font-size:18px;color:var(--brand);max-width:200px}
.l5-help p{margin:6px 0 14px;font-size:13px;color:var(--ink-2);max-width:210px}
.l5-help-art{position:absolute;right:-10px;bottom:-12px;width:96px;height:96px;border-radius:50%;display:grid;place-items:center;background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand)}
.l5-help-art svg{width:40px;height:40px}
@media (max-width:1100px){.l5-grid{grid-template-columns:minmax(0,1fr)}.l5-rail{position:static}}
@media (max-width:640px){.l5-head{grid-template-columns:44px minmax(0,1fr)}.l5-ico{width:44px;height:44px;border-radius:12px}.l5-act{grid-column:1 / -1}.l5-prog-b{grid-template-columns:minmax(0,1fr);justify-items:center}.l5-list .part{grid-template-columns:30px minmax(0,1fr) 16px}.l5-st{display:none}}
/* câu hỏi giữa bài: thời điểm dừng / tua về nhập dạng [phút] : [giây] */
.vc-ms{gap:2px;padding:0 8px 0 10px}
.vc-ms svg.i{margin-right:4px}
.vc-ms input{width:34px;padding:2px 2px;text-align:center;font-family:var(--f-mono);font-size:14px;color:var(--ink);border-radius:6px}
.vc-ms input[data-ms="m"]{text-align:right}
.vc-ms input:focus{background:var(--brand-soft)}
.vc-sep{font-family:var(--f-mono);font-weight:700;color:var(--muted)}
/* câu hỏi giữa bài: hàng 1 = số · dừng tại · tua về · (đẩy phải) không bắt buộc · xóa; hàng 2 = ô câu hỏi trải hết chiều ngang, thẳng lề với các lựa chọn */
.vcheck-row .vcheck-opt{margin-left:auto}
.vcheck-row .vcheck-q{order:10;flex:1 1 100%;margin-left:38px}
@media (max-width:640px){.vcheck-row .vcheck-q{margin-left:0}}
/* ======================================================================
   Trang «Học viên của lớp» /day/lop/{id} (thiết kế lại theo mẫu lop-hoc-redesign): tiêu đề + trạng thái, thẻ số liệu, tab, thanh lọc, bảng
   ====================================================================== */
.cl5{display:flex;flex-direction:column;gap:16px}
.cl5-head{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
.cl5-title{min-width:0;flex:1 1 360px}
.cl5-title h1{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:26px;line-height:1.25;letter-spacing:-.01em;margin:0}
.cl5-code{font-size:12px;font-weight:500;padding:2px 8px;border:1px solid var(--line);border-radius:6px;background:var(--tint);color:var(--muted)}
.cl5-meta{display:flex;gap:6px 16px;flex-wrap:wrap;margin-top:8px;color:var(--muted);font-size:13px}
.cl5-meta>span{display:inline-flex;align-items:center;gap:6px}
.cl5-staff{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:8px 0 0}
.cl5-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.cl5-status{display:flex;gap:8px;align-items:center;margin:0}
.cl5-st{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 4px 0 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface)}
.cl5-st select{border:0;background-color:transparent;box-shadow:none;width:auto;min-height:36px;font-weight:600;color:var(--ink)}
.cl5-dot{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft);flex:none}
.cl5-st[data-s="1"] .cl5-dot{background:var(--warn);box-shadow:0 0 0 3px var(--warn-soft)}
.cl5-st[data-s="2"] .cl5-dot{background:var(--muted);box-shadow:0 0 0 3px var(--tint)}
/* thông báo bản mới */
.cl5-notice{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 14px;border:1px solid color-mix(in srgb,var(--info) 28%,transparent);border-radius:var(--r);background:var(--info-soft)}
.cl5-notice-ic{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--surface);color:var(--info);flex:none}
.cl5-notice p{flex:1 1 260px;margin:0;font-size:13.5px}.cl5-notice p span{color:var(--muted)}
.cl5-notice form{margin:0}
/* thẻ số liệu */
.cl5-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.cl5-kpi{padding:14px 16px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--sh);min-width:0}
.cl5-kpi .lbl{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted)}
.cl5-kpi .val{margin-top:4px;font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.2}
.cl5-kpi .val small{font-size:13px;font-weight:500;color:var(--muted)}
.cl5-kpi .sub{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin-top:4px;font-size:12.5px;color:var(--muted)}
.cl5-kpi .sub a{font-weight:600}
.cl5-kpi.hot{border-color:color-mix(in srgb,var(--bad) 30%,var(--line))}
.cl5-kpi.hot .val,.cl5-kpi.hot .lbl{color:var(--bad)}
@media (max-width:900px){.cl5-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.cl5-kpi .val{font-size:22px}}
/* thẻ chính: tab + thanh lọc + bảng */
.cl5-card{overflow:visible}
.cl5-tabs{display:flex;gap:2px;padding:0 12px;border-bottom:1px solid var(--line);overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
.cl5-tab{display:inline-flex;align-items:center;gap:7px;padding:13px 10px;margin-bottom:-1px;border-bottom:2px solid transparent;color:var(--muted);font-weight:600;white-space:nowrap;text-decoration:none}
.cl5-tab:hover{color:var(--ink)}
.cl5-tab.active{color:var(--brand);border-bottom-color:var(--brand)}
.cl5-tab .count{padding:0 7px;border-radius:999px;background:var(--tint);color:var(--muted);font-size:11.5px;font-weight:600}
.cl5-toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:12px 16px}
.cl5-toolbar .spacer{flex:1 1 0}
.cl5-search{display:flex;align-items:center;gap:8px;height:36px;padding:0 12px;min-width:200px;max-width:320px;flex:1 1 220px;border:1px solid var(--line-strong);border-radius:10px;background:var(--subtle);color:var(--muted)}
.cl5-search input{flex:1;min-width:0;border:0;background:none;box-shadow:none;outline:none;padding:0;min-height:0;height:100%;color:var(--ink)}
.cl5-chips{display:flex;gap:6px;flex-wrap:wrap}
.cl5-chip{height:30px;padding:0 12px;border:1px solid var(--line-strong);border-radius:999px;background:var(--surface);font:inherit;font-size:13px;color:var(--muted);cursor:pointer}
.cl5-chip:hover{color:var(--ink)}
.cl5-chip.on{background:var(--brand-soft);border-color:transparent;color:var(--brand);font-weight:600}
.cl5-dd{position:relative}
.cl5-dd>summary{list-style:none;cursor:pointer}
.cl5-dd>summary::-webkit-details-marker{display:none}
.cl5-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:30;min-width:230px;padding:6px;border:1px solid var(--line-strong);border-radius:12px;background:var(--surface);box-shadow:var(--sh-lg)}
.cl5-menu a{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:8px;color:var(--ink);font-size:13.5px;text-decoration:none}
.cl5-menu a:hover{background:var(--tint)}
.cl5-table{min-width:860px}
.cl5-table th{background:var(--subtle);font-size:12px;white-space:nowrap}
.cl5-table th.r,.cl5-table td.r{text-align:right}
.cl5-table td{vertical-align:middle}
.cl5-table tr[hidden]{display:none}
.cl5-table tbody tr:hover{background:color-mix(in srgb,var(--tint) 55%,transparent)}
.cl5-table tbody tr.stuck td:first-child{box-shadow:inset 3px 0 0 var(--bad)}
.cl5-stu{display:flex;gap:10px;align-items:center;min-width:0}
.cl5-stu .avatar{width:36px;height:36px;font-size:12.5px;flex:none}
.cl5-stu b{display:block;font-weight:600}
.cl5-stu small{display:block;color:var(--muted);font-size:12.5px;overflow:hidden;text-overflow:ellipsis}
.cl5-prog{display:flex;align-items:center;gap:10px;min-width:160px}
.cl5-prog .bar{flex:1}
.cl5-prog .bar.low i{background:var(--warn)}
.cl5-prog b{width:40px;text-align:right;font-size:13px}
.cl5-psub,.cl5-act{margin-top:3px;font-size:12px;color:var(--muted)}
.cl5-stuck{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:0}
.cl5-rowacts{display:inline-flex;gap:2px;justify-content:flex-end;opacity:.6;transition:opacity .15s}
.cl5-table tr:hover .cl5-rowacts,.cl5-rowacts:focus-within{opacity:1}
.cl5-none{padding:34px;text-align:center;color:var(--muted)}
@media (max-width:640px){.cl5-title h1{font-size:21px}.cl5-search{max-width:none;flex:1 1 100%}.cl5-actions{width:100%}.cl5-toolbar .spacer{display:none}.cl5-rowacts{opacity:1}}

/* ---------- Lịch học (pl5): thiết kế lại, ưu tiên di động ---------- */
.pl5{gap:20px}
.pl5-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.pl5-head h1{font-size:26px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0}
.pl5-code{font-size:12px;background:var(--subtle);border:1px solid var(--line);padding:2px 8px;border-radius:6px;color:var(--muted);font-weight:500}
.pl5-sub{color:var(--muted);margin:4px 0 0;max-width:680px}
.pl5-grid{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:20px;align-items:start}
.pl5-form{display:flex;flex-direction:column;gap:16px;min-width:0}
.pl5-side{min-width:0;position:sticky;top:76px}
.pl5-ch{display:flex;align-items:center;gap:10px}
.pl5-ch h2{font-size:15px;font-weight:600;margin:0}
.pl5-ch small{margin-left:auto;color:var(--muted);font-size:12.5px;text-align:right}
.pl5-num,.pl5-ico{width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:12px;font-weight:700;flex-shrink:0}
.pl5-ico svg{width:15px;height:15px}
.pl5-cb{display:flex;flex-direction:column;gap:18px}
.pl5-row2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.pl5 .hint{display:flex;gap:6px;align-items:flex-start;line-height:1.4}
.pl5 .hint svg{width:14px;height:14px;margin-top:1px;flex-shrink:0}
.pl5 input[type=date]{min-height:44px}
.pl5-days{display:flex;gap:6px}
.pl5-day{position:relative;flex:1 1 0;min-width:0;max-width:64px;cursor:pointer}
.pl5-day input{position:absolute;inset:0;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}
.pl5-day span{display:grid;place-items:center;height:46px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface);font-weight:600;color:var(--muted);transition:.12s}
.pl5-day:hover span{border-color:var(--brand);color:var(--brand)}
.pl5-day input:checked+span{background:var(--brand);border-color:var(--brand);color:#fff}
.pl5-day input:focus-visible+span{outline:3px solid var(--brand-soft);outline-offset:1px}
.pl5-presets{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin-top:10px}
.pl5-presets>span{font-size:12.5px;color:var(--muted);margin-right:2px}
.pl5-preset{min-height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--line-strong);background:none;font-size:12.5px;color:var(--muted);cursor:pointer}
.pl5-preset:hover{color:var(--brand);border-color:var(--brand)}
.pl5-preset.on{background:var(--brand-soft);color:var(--brand);border-color:transparent;font-weight:600}
.pl5-slots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.pl5-slot{position:relative;display:block;cursor:pointer}
.pl5-slot input{position:absolute;inset:0;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}
.pl5-slot-b{position:relative;display:flex;gap:10px;align-items:center;border:1px solid var(--line-strong);border-radius:12px;padding:12px;background:var(--surface);transition:.12s}
.pl5-slot-b b{font-weight:600;min-width:0}
.pl5-slot-ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--subtle);color:var(--muted);flex-shrink:0}
.pl5-slot-ic svg{width:18px;height:18px}
.pl5-slot-ck{position:absolute;top:8px;right:8px;width:18px;height:18px;border-radius:50%;border:1.5px solid var(--line-strong);display:grid;place-items:center;color:#fff}
.pl5-slot-ck svg{width:12px;height:12px;stroke-width:3;opacity:0}
.pl5-slot input:checked+.pl5-slot-b{border-color:var(--brand);background:var(--brand-soft)}
.pl5-slot input:checked+.pl5-slot-b .pl5-slot-ic{background:var(--brand);color:#fff}
.pl5-slot input:checked+.pl5-slot-b .pl5-slot-ck{background:var(--brand);border-color:var(--brand)}
.pl5-slot input:checked+.pl5-slot-b .pl5-slot-ck svg{opacity:1}
.pl5-slot input:focus-visible+.pl5-slot-b{outline:3px solid var(--brand-soft);outline-offset:1px}
.pl5-stepper{display:flex;align-items:center;gap:8px}
.pl5-stepper .btn.icon{flex-shrink:0;width:44px;min-height:44px}
.pl5-stepper .input-group{flex:1;min-width:0}
.pl5-stepper input{text-align:center;font-weight:600;min-height:44px}
.pl5-scale{margin-top:10px}
.pl5-scale-bar{display:flex;height:8px;border-radius:99px;overflow:hidden;gap:2px}
.pl5-scale-bar i{display:block}
.pl5-scale-l{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:6px}
.pl5-scale-l>span{display:flex;align-items:center;gap:5px}
.pl5 .sw{width:8px;height:8px;border-radius:2px;display:inline-block;flex-shrink:0}
/* khung xem trước */
.pl5-prev{transition:opacity .15s}
.pl5-prev.busy{opacity:.55}
.pl5-sum{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border-bottom:1px solid var(--line)}
.pl5-sum>div{background:var(--surface);padding:12px 16px;min-width:0}
.pl5-sum small{color:var(--muted);font-size:12px;display:block}
.pl5-sum b{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums}
.pl5-sum>div.bad b{color:var(--bad)}
.pl5-al{display:flex;gap:10px;padding:12px 16px;font-size:13px;border-bottom:1px solid var(--line);line-height:1.45}
.pl5-al svg{width:16px;height:16px;margin-top:2px;flex-shrink:0}
.pl5-al ul{margin:4px 0 0;padding-left:18px}
.pl5-al.ok{background:var(--ok-soft);color:var(--ok)}
.pl5-al.bad{background:var(--bad-soft);color:var(--bad)}
.pl5-al.neutral{background:var(--subtle);color:var(--muted)}
.pl5-al a{color:inherit;font-weight:600;text-decoration:underline}
.pl5-cal{padding:14px 16px;border-bottom:1px solid var(--line)}
.pl5-cal-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.pl5-cal-h b{font-weight:600;text-transform:capitalize}
.pl5-cal-nav{display:flex;gap:2px}
.pl5-cal-g{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:3px;text-align:center}
.pl5-cal-g .dn{font-size:11px;color:var(--muted);padding:2px 0;font-weight:600}
.pl5-cal-g .d{height:34px;border-radius:7px;display:grid;place-items:center;font-size:12.5px;color:var(--muted);opacity:.55;position:relative}
.pl5-cal-g .d.in{color:var(--ink);opacity:1}
.pl5-cal-g .d.study{background:var(--brand-soft);color:var(--brand);font-weight:700;opacity:1}
.pl5-cal-g .d.start{outline:2px solid var(--brand);outline-offset:-2px;opacity:1}
.pl5-cal-g .d.finish{background:var(--brand);color:#fff;opacity:1}
.pl5-cal-g .d.over{background:var(--bad-soft);color:var(--bad);opacity:1}
.pl5-cal-g .d.deadline::after{content:"";position:absolute;bottom:3px;width:4px;height:4px;border-radius:50%;background:var(--bad)}
.pl5-legend{display:flex;gap:12px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);margin-top:10px}
.pl5-legend span{display:flex;gap:5px;align-items:center}
.pl5-list-h{display:flex;justify-content:space-between;padding:12px 16px 4px;font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.pl5-list{padding:4px 0 8px}
.pl5-item{display:grid;grid-template-columns:62px minmax(0,1fr) auto;gap:10px;padding:8px 16px;align-items:center}
.pl5-item:hover{background:var(--subtle)}
.pl5-item.past{opacity:.6}
.pl5-item.today{background:var(--brand-soft)}
.pl5-item .dt{font-size:12px;color:var(--muted);line-height:1.3}
.pl5-item .dt b{display:block;color:var(--ink);font-size:13px}
.pl5-item .ls{font-size:13px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pl5-item .ls small{display:block;color:var(--muted);font-size:11.5px}
.pl5-more>summary{list-style:none;cursor:pointer;padding:10px 16px;color:var(--brand);font-weight:600;font-size:13px;text-align:center;border-top:1px solid var(--line-2)}
.pl5-more>summary::-webkit-details-marker{display:none}
.pl5-more[open]>summary{display:none}
/* thanh lưu: dính đáy trang */
.pl5-savebar{position:sticky;bottom:0;z-index:15;margin-top:4px;padding-bottom:max(0px,env(safe-area-inset-bottom,0px))}
.pl5-savebar-in{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r);box-shadow:var(--sh-lg)}
.pl5-msg{flex:1;min-width:0;color:var(--muted);font-size:13px;display:flex;gap:8px;align-items:center}
.pl5-dirty{width:8px;height:8px;border-radius:50%;background:var(--warn);flex-shrink:0}
.pl5-dirty[hidden],.pl5-savebar [hidden]{display:none}
@media (max-width:1100px){.pl5-grid{grid-template-columns:minmax(0,1fr)}.pl5-side{position:static}}
@media (max-width:640px){
  .pl5{gap:16px}
  .pl5-head h1{font-size:21px}
  .pl5-head-r{width:100%}.pl5-head-r .btn{width:100%;justify-content:center}
  .pl5-row2{grid-template-columns:minmax(0,1fr)}
  .pl5-days{gap:4px}.pl5-day{max-width:none}.pl5-day span{height:44px}
  .pl5-slot-b{flex-direction:column;justify-content:center;text-align:center;padding:12px 6px;gap:6px}
  .pl5-slot-ck{top:6px;right:6px}
  .pl5-sum b{font-size:16px}
  .pl5-ch small{display:none}
  .pl5-msg{font-size:12px}
  .pl5-prevbtn{display:none}
  .pl5-savebar-in{padding:8px 10px;border-radius:14px}
  .pl5-savebar .btn.primary{flex:0 0 auto;min-height:44px}
}

/* ---------- Bài học học viên (l6): hero + lộ trình dạng timeline; trên di động danh sách phần thành dải cuộn ngang ---------- */
.l6-hero{position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;padding:22px 24px;margin-bottom:20px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh)}
.l6-hero::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(var(--brand-soft),transparent 70%);pointer-events:none}
.l6-main,.l6-cta{position:relative;min-width:0}
.l6-eyebrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.l6-crs{min-width:0;overflow:hidden;text-overflow:ellipsis}
.l6-pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:2px 9px;border-radius:99px;background:var(--subtle);color:var(--muted);white-space:nowrap}
.l6-pill svg{width:14px;height:14px}
.l6-pill.brand{background:var(--brand-soft);color:var(--brand)}
.l6-hero h1{font-size:clamp(20px,2.4vw,26px);letter-spacing:-.01em;margin:8px 0 0;line-height:1.25}
.l6-facts{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.l6-fact{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:8px;background:var(--subtle);font-size:13px;color:var(--ink-2)}
.l6-fact svg{width:15px;height:15px;color:var(--muted)}
.l6-cta{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.l6-ring{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.l6-ring svg{width:46px;height:46px;transform:rotate(-90deg)}
.l6-ring circle{fill:none;stroke-width:5}
.l6-ring .tr{stroke:var(--subtle)}
.l6-ring .fg{stroke:var(--brand);stroke-linecap:round;transition:stroke-dashoffset .4s}
.l6-ring b{display:block;color:var(--ink);font-size:15px;font-variant-numeric:tabular-nums}
.l6-cta .btn.lg{min-height:46px;padding:0 20px;font-size:15px;max-width:340px}
.l6-cta .btn.lg>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.l6-cta .btn[aria-disabled="true"]{opacity:.6}
.l6-links{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.l6-links .btn[aria-disabled="true"]{opacity:.5;pointer-events:none}
.l6-planf{display:flex;gap:8px;align-items:center;justify-content:flex-start;font-size:13px;color:var(--muted)}
.l6-planf svg{width:15px;height:15px}
.l6-planf b{color:var(--ink)}
/* bộ lọc nhóm: dạng phân đoạn */
.l5-tabs{gap:2px;padding:4px;border-radius:12px;background:var(--subtle);border-color:transparent;align-self:flex-start;max-width:100%;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;flex-wrap:nowrap}
.l5-tabs::-webkit-scrollbar{display:none}
.l5-tabs button{padding:7px 12px;font-size:13px;border-radius:9px;white-space:nowrap;flex-shrink:0}
.l5-tabs button.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh)}
.l5-tabs button.on b{background:var(--brand-soft);color:var(--brand)}
/* lộ trình: đường nối các nút theo thời gian */
.l5-list .part[hidden]{display:none}
.l5-list .parts{position:relative;padding:8px 8px 10px;gap:0}
.l5-list .part{position:relative;border:0;border-radius:12px;padding:12px 12px;gap:14px}
.l5-list .part:first-child{border-top:0}
.l5-list .part .n{width:36px;height:36px;border-radius:11px;position:relative;z-index:1;border:1.5px solid var(--line-strong);background:var(--surface);color:var(--muted)}
.l5-list .part.done .n{background:var(--brand);border-color:var(--brand);color:#fff}
.l5-list .part[aria-current]:not(.done) .n{background:var(--surface);border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.l5-list .part[aria-current]{border:0;background:color-mix(in srgb,var(--brand-soft) 45%,transparent)}
.l5-list .part:not(:first-child)::before,.l5-list .part:not(:last-child)::after{content:"";position:absolute;left:30px;width:2px;background:var(--line-strong);z-index:0}
.l5-list .part:not(:first-child)::before{top:0;height:calc(50% - 19px)}
.l5-list .part:not(:last-child)::after{top:calc(50% + 19px);bottom:0}
.l5-list .part.done:not(:last-child)::after,.l5-list .part.done+.part::before{background:var(--brand)}
.l5-pt b{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media (max-width:1100px){.l6-hero{padding:18px}}
@media (max-width:760px){
  .l6-hero{grid-template-columns:minmax(0,1fr);gap:14px;padding:16px;margin-bottom:14px}
  .l6-cta{align-items:stretch;gap:12px}
  .l6-ring{justify-content:flex-start}
  .l6-cta .btn.lg{max-width:none;width:100%;justify-content:center}
  .l6-links{justify-content:stretch}.l6-links .btn{flex:1 1 0;justify-content:center}
  .l5-pbar{max-width:none}
}
@media (max-width:1100px){
  /* danh sách các phần: dải cuộn ngang đặt ngay dưới đầu trang, nội dung đang học nằm ngay sau */
  .l5-list .card-h{padding:10px 14px}
  .l5-list .parts{display:flex;flex-direction:row;overflow-x:auto;overflow-y:hidden;gap:8px;padding:10px 12px 12px;scroll-snap-type:x proximity;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .l5-list .parts::-webkit-scrollbar{display:none}
  .l5-list .part{flex:0 0 min(210px,68vw);width:auto;scroll-snap-align:start;grid-template-columns:32px minmax(0,1fr);gap:10px;padding:10px;border:1px solid var(--line);background:var(--surface);align-items:center}
  .l5-list .part:not(:first-child)::before,.l5-list .part:not(:last-child)::after{display:none}
  .l5-list .part .n{width:32px;height:32px;border-radius:50%}
  .l5-list .part[aria-current]{border:1px solid var(--brand);background:color-mix(in srgb,var(--brand-soft) 55%,var(--surface))}
  .l5-list .part .l5-chev{display:none}
  .l5-pt b{font-size:13px;-webkit-line-clamp:2}
  .l5-pt span{font-size:11.5px}
  .l5-list .card-b.muted{flex:0 0 100%}
}
/* bố cục trang bài học: tiến độ lên đầu trang; «học tiếp» + danh sách phần ở cột phải */
.l6-hero{grid-template-columns:minmax(0,1fr) minmax(300px,420px);gap:28px}
.l6-prog{position:relative;min-width:0;padding-left:28px;border-left:1px solid var(--line)}
.l6-prog-h{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.l6-prog-h h3{margin:0;font-size:15px}
.l6-prog-h .spacer{flex:1}
.l6-prog-h .xs{display:inline-flex;align-items:center;gap:2px;color:var(--brand);font-weight:600}
.l6-prog .l5-prog-b{grid-template-columns:auto minmax(0,1fr);gap:18px;justify-items:start;align-items:center}
.l6-prog .l5-ring{width:104px;height:104px}
.l6-prog .l5-ring svg{width:104px;height:104px}
.l6-prog .l5-ring b{font-size:21px}
.l6-prog .l5-kv{gap:8px}
.l6-prog .l5-kv li{font-size:12.5px;gap:8px;grid-template-columns:26px minmax(0,1fr) auto}
.l6-prog .l5-kv .ico{width:26px;height:26px;border-radius:8px}
.l6-planf{margin-top:12px;padding:10px 0 0;border-top:1px solid var(--line)}
.l6-go .card-b{display:flex;flex-direction:column;gap:12px}
.l6-go .l6-ring{justify-content:flex-start}
.l6-go .btn.lg{width:100%;justify-content:center;min-height:46px;padding:0 18px;font-size:15px}
.l6-go .btn.lg>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.l6-go .btn[aria-disabled="true"]{opacity:.6}
.l6-go .l6-links{justify-content:stretch}
.l6-go .l6-links .btn{flex:1 1 0;justify-content:center}
.l5-rail{position:static}
#partCards{scroll-margin-top:68px}
.l5-list .l5-tabs{margin:10px 12px 0;align-self:auto}
@media (max-width:1100px){
  .l6-hero{grid-template-columns:minmax(0,1fr);gap:18px}
  .l6-prog{padding:16px 0 0;border-left:0;border-top:1px solid var(--line)}
  .l5-rail{display:contents}
  .l6-go{order:-3}
  .l5-list{order:-2}
  .l5-main{order:-1}
}
@media (max-width:520px){
  .l6-prog .l5-prog-b{grid-template-columns:minmax(0,1fr);justify-items:center;gap:12px}
  .l6-prog .l5-kv{width:100%}
}
@media (max-width:1100px){.l5-list .l5-st{display:none}}
.auto-next{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:70;display:flex;align-items:center;gap:12px;max-width:min(520px,calc(100vw - 24px));padding:12px 14px 12px 16px;background:var(--surface);border:1px solid var(--brand);border-radius:14px;box-shadow:var(--sh-lg);font-size:13.5px;font-weight:600;color:var(--ink)}
.auto-next .an-t{flex:1;min-width:0}
.auto-next .btn{flex-shrink:0}

/* ---------- Trang của tôi (hm): lời chào + chuỗi ngày học, hero «tiếp tục học», thẻ khóa học, cột «Cần làm» ---------- */
.hm{gap:22px}
.hm-greet{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.hm-greet h1{font-size:24px;letter-spacing:-.01em;margin:0}
.hm-greet p{color:var(--muted);margin:2px 0 0}
.hm-greet p b{color:var(--ink)}
.hm-streakbox{display:flex;align-items:center}
.hm-week{display:flex;gap:6px;align-items:flex-end}
.hm-week>div{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:11px;color:var(--muted);font-weight:600}
.hm-week i{width:28px;height:28px;border-radius:8px;background:var(--subtle);display:grid;place-items:center;border:1px solid var(--line)}
.hm-week i svg{width:14px;height:14px;stroke-width:3}
.hm-week .on i{background:var(--brand);color:#fff;border-color:var(--brand)}
.hm-week .today i{outline:2px solid var(--brand);outline-offset:2px}
.hm-week .today{color:var(--brand)}
.hm-streak{display:flex;flex-direction:column;justify-content:center;padding-left:14px;margin-left:12px;border-left:1px solid var(--line)}
.hm-streak b{display:flex;align-items:center;gap:5px;font-size:20px;font-weight:800;line-height:1;color:var(--ink)}
.hm-streak b svg{width:18px;height:18px;color:#e9962b}
.hm-streak small{color:var(--muted);font-size:12px}
/* hero */
.hm-hero{position:relative;overflow:hidden;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:20px;align-items:center;padding:22px 24px;border-radius:18px;background:#174d39;color:#e6f2ec}
html[data-theme=dark] .hm-hero{background:#123a2b}
.hm-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(rgba(233,185,73,.22),transparent 70%);pointer-events:none}
.hm-sic{width:56px;height:56px;border-radius:14px;background:rgba(255,255,255,.1);display:grid;place-items:center;color:#e9b949}
.hm-sic svg{width:28px;height:28px}
.hm-hmain{position:relative;z-index:1;min-width:0}
.hm-hmain small{display:flex;gap:8px;align-items:center;color:#a9c9ba;font-size:12.5px}
.hm-hmain small svg{width:14px;height:14px}
.hm-hmain h2{font-size:20px;color:#fff;margin:2px 0 10px;line-height:1.3}
.hm-hbar{display:flex;align-items:center;gap:10px;max-width:520px}
.hm-hbar .t{flex:1;height:6px;background:rgba(255,255,255,.14);border-radius:99px;overflow:hidden}
.hm-hbar .t i{display:block;height:100%;background:#e9b949;border-radius:99px}
.hm-hbar b{font-size:13px;color:#fff}
.hm-hmeta{display:flex;gap:6px 16px;margin-top:10px;font-size:12.5px;color:#a9c9ba;flex-wrap:wrap}
.hm-hmeta span{display:inline-flex;gap:6px;align-items:center}
.hm-hmeta svg{width:14px;height:14px}
.hm-cta{position:relative;z-index:1}
.hm-gold{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:10px;background:#e9b949;color:#3a2a05;font-weight:700;font-size:15px;white-space:nowrap}
.hm-gold:hover{filter:brightness(1.06)}
/* lưới chính */
.hm-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}
.hm-sech{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.hm-sech h3{font-size:16px;margin:0}
.hm-seg{margin-left:auto;display:inline-flex;background:var(--subtle);border-radius:10px;padding:3px;gap:2px}
.hm-seg button{border:0;background:none;padding:6px 12px;border-radius:8px;font:inherit;font-size:12.5px;font-weight:600;color:var(--muted);cursor:pointer;display:inline-flex;gap:6px;align-items:center}
.hm-seg button b{font-size:11px;padding:0 6px;border-radius:99px;background:var(--tint);color:var(--muted)}
.hm-seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh)}
.hm-courses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.hm-courses [hidden]{display:none}
.hm-cc{display:flex;flex-direction:column;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden;transition:border-color .15s}
.hm-cc:hover{border-color:color-mix(in srgb,var(--c) 45%,var(--line))}
.hm-cctop{display:flex;gap:12px;align-items:flex-start;padding:16px 16px 12px}
.hm-cic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c)}
.hm-cic svg{width:22px;height:22px}
.hm-cct{min-width:0;flex:1}
.hm-cct small{display:block;color:var(--muted);font-size:12px}
.hm-cct h4{margin:0;font-size:15.5px;line-height:1.3}
.hm-status{font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:99px;white-space:nowrap;flex-shrink:0}
.hm-status.s-ok{background:var(--brand-soft);color:var(--brand)}
.hm-status.s-slow{background:var(--warn-soft);color:var(--warn)}
.hm-status.s-late{background:var(--bad-soft);color:var(--bad)}
.hm-status.s-done{background:var(--info-soft);color:var(--info)}
.hm-ccprog{padding:0 16px}
.hm-pr{display:flex;align-items:center;gap:10px}
.hm-pr .t{flex:1;height:6px;background:var(--subtle);border-radius:99px;overflow:hidden}
.hm-pr .t i{display:block;height:100%;background:var(--c);border-radius:99px}
.hm-pr b{font-size:13px;width:38px;text-align:right}
.hm-prsub{font-size:12.5px;color:var(--muted);margin-top:4px}
.hm-stuck{color:var(--bad);font-weight:600}
.hm-next{margin:12px 16px 0;padding:10px 12px;border-radius:10px;background:var(--subtle);display:flex;gap:10px;align-items:center;font-size:13px;color:var(--ink)}
.hm-next>svg:first-child{color:var(--c);flex-shrink:0}
.hm-next>svg:last-child{color:var(--muted);flex-shrink:0}
.hm-next span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.hm-next small{display:block;color:var(--muted);font-size:12px;font-weight:400;overflow:hidden;text-overflow:ellipsis}
.hm-next:hover{background:var(--tint)}
.hm-class{display:flex;align-items:center;gap:10px;padding:12px 16px;margin-top:12px;border-top:1px solid var(--line);color:var(--ink)}
.hm-class:hover{background:var(--subtle)}
.hm-avs{display:flex;flex-shrink:0}
.hm-avs i{width:24px;height:24px;border-radius:50%;background:var(--brand-soft);border:2px solid var(--surface);margin-left:-7px;display:grid;place-items:center;font-size:9.5px;font-weight:700;font-style:normal;color:var(--brand)}
.hm-avs i:first-child{margin-left:0}
.hm-msg{flex:1;min-width:0;font-size:12.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hm-msg b{color:var(--ink)}
.hm-class>svg{color:var(--muted);flex-shrink:0}
.hm-unread{background:var(--bad);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:0 7px;min-width:20px;text-align:center}
.hm-ccfoot{display:flex;gap:8px;padding:12px 16px 16px;margin-top:auto;flex-wrap:wrap}
.hm-ccfoot .btn{flex:1 1 auto;justify-content:center}
.hm-add{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:200px;padding:20px;text-align:center;border:1.5px dashed var(--line-strong);border-radius:var(--r);color:var(--muted);transition:.15s}
.hm-add[hidden]{display:none}
a.hm-add:hover{border-color:var(--brand);color:var(--brand)}
.hm-add .ic{width:44px;height:44px;border-radius:12px;background:var(--subtle);display:grid;place-items:center}
.hm-add b{color:var(--ink)}
#hmNoDone{grid-column:1/-1}
/* cột phải */
.hm-rail{display:flex;flex-direction:column;gap:16px;position:sticky;top:76px;min-width:0}
.hm-ch{display:flex;align-items:center;gap:8px;padding:14px 16px 8px}
.hm-ch svg{color:var(--brand);width:18px;height:18px}
.hm-ch h3{margin:0;font-size:14.5px}
.hm-todol{padding:0 8px 8px}
.hm-td{display:flex;gap:10px;align-items:center;padding:9px 8px;border-radius:9px;color:var(--ink)}
.hm-td:hover{background:var(--subtle)}
.hm-td>div{min-width:0;flex:1}
.hm-td .ic{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;flex-shrink:0}
.hm-td b{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hm-td small{display:block;color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hm-td .due{font-size:11.5px;font-weight:700;white-space:nowrap;background:none!important}
.hm-td .t-bad{color:var(--bad)}.hm-td .t-warn{color:var(--warn)}.hm-td .t-info{color:var(--info)}
.hm-td .ic.t-bad{background:var(--bad-soft)}.hm-td .ic.t-warn{background:var(--warn-soft)}.hm-td .ic.t-info{background:var(--info-soft)}
.hm-none{display:flex;gap:8px;align-items:center;margin:0;padding:10px 8px;color:var(--muted);font-size:13px}
.hm-none svg{color:var(--ok)}
.hm-chartb{padding:4px 16px 14px}
.hm-bars{display:flex;align-items:flex-end;gap:8px;height:96px}
.hm-bars>div{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.hm-bars i{width:100%;border-radius:6px 6px 3px 3px;background:var(--brand-soft);min-height:4px}
.hm-bars .today i{background:var(--brand)}
.hm-bars span{font-size:11px;color:var(--muted)}
.hm-bars .today span{color:var(--brand);font-weight:700}
.hm-sum{display:flex;justify-content:space-between;margin-top:12px;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.hm-sum b{display:block;color:var(--ink);font-size:15px}
@media (max-width:1180px){
  .hm-grid{grid-template-columns:minmax(0,1fr)}
  .hm-rail{display:contents}
  .hm-todo{order:-1}
  .hm-main{order:0}
  .hm-chart{order:1}
}
@media (max-width:860px){
  .hm{gap:18px}
  .hm-hero{grid-template-columns:minmax(0,1fr);padding:18px;gap:14px}
  .hm-sic{display:none}
  .hm-cta .hm-gold{display:flex;width:100%}
  .hm-courses{grid-template-columns:minmax(0,1fr)}
  .hm-streakbox{width:100%;justify-content:space-between}
}
@media (max-width:420px){
  .hm-greet h1{font-size:21px}
  .hm-week{gap:4px}
  .hm-week i{width:26px;height:26px}
}
.hm a,.hm-gold,.hm-td,.hm-next,.hm-class,.hm-add{text-decoration:none}

/* ---------- Dạy · tổng quan giảng dạy (tc): dùng chung khung hm-*, thêm bước «Bắt đầu nhanh», ô số liệu, thẻ khóa ---------- */
.tc .hm-gold.off{opacity:.55;cursor:not-allowed}
.hm-cta .hm-gold{text-decoration:none}
.tc-steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin-top:12px}
.tc-step{display:flex;flex-direction:column;gap:8px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px;min-width:0}
.tc-step .no{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--subtle);color:var(--muted);font-size:12px;font-weight:700;flex-shrink:0}
.tc-step .no svg{width:14px;height:14px;stroke-width:3}
.tc-step .tt b{font-size:13px;line-height:1.35;display:block}
.tc-step .act{margin-top:auto;display:flex;gap:6px;flex-wrap:wrap}
.tc-step .act .btn{flex:1 1 auto;justify-content:center}
.tc-step.done .no{background:var(--brand);color:#fff}
.tc-step.done{background:var(--brand-soft);border-color:transparent}
.tc-step.next{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.tc-step.next .no{background:var(--brand);color:#fff}
.tc-step.lock{opacity:.7}
.tc-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.tc-kpi{display:flex;gap:12px;align-items:center;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);min-width:0}
.tc-kpi .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c)}
.tc-kpi .ic svg{width:21px;height:21px}
.tc-kpi small{display:block;color:var(--muted);font-size:12.5px}
.tc-kpi b{font-size:22px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}
.tc-kpi em{display:block;font-style:normal;font-size:12px;font-weight:600;color:var(--bad);margin-top:2px}
.tc-kpi.hot{border-color:color-mix(in srgb,var(--bad) 40%,var(--line))}
.tc-stats{display:flex;gap:6px 14px;flex-wrap:wrap;padding:0 16px;color:var(--muted);font-size:12.5px}
.tc-stats span{display:inline-flex;gap:5px;align-items:center}
.tc-stats svg{width:14px;height:14px}
.hm-cct h4 a{color:inherit;text-decoration:none}
.hm-cct h4 a:hover{color:var(--brand)}
.hm-more{margin-left:auto;font-size:12.5px;font-weight:600;color:var(--brand);text-decoration:none}
.hm-td .ic.t-bad{font-size:11.5px;font-weight:700}
@media (max-width:1180px){.tc-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.tc-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){
  .tc-steps{grid-template-columns:minmax(0,1fr);gap:8px}
  .tc-step{flex-direction:row;align-items:center;flex-wrap:wrap}
  .tc-step .tt{flex:1;min-width:0}
  .tc-step .act{margin-top:0;flex:0 0 auto}
  .tc-kpi{padding:12px}.tc-kpi b{font-size:19px}.tc-kpi .ic{width:36px;height:36px}
}

/* ---------- Trang chủ công khai (hp): hero 3 cột + thẻ tiến độ, ô chọn môn có màu, bìa khóa vẽ theo môn, tính năng, khối giảng viên ---------- */
.hp{display:flex;flex-direction:column;gap:0;--rose-soft:#FFE9EE}
.hp a{text-decoration:none}
.hp-hero{position:relative;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.8fr) minmax(290px,.95fr);gap:20px;align-items:center;padding:22px 24px;border-radius:22px;border:1px solid var(--line);overflow:hidden;background:radial-gradient(1100px 380px at 25% 0%,color-mix(in srgb,var(--brand-soft) 85%,var(--surface)),var(--surface) 72%)}
.hp-hi{margin:0;font-size:14px;font-weight:500;color:var(--muted)}
.hp-copy h1{margin:6px 0 10px;font-size:clamp(26px,2.9vw,38px);line-height:1.12;letter-spacing:-.025em;font-weight:600}
.hp-copy h1 em{display:block;font-style:normal;color:var(--brand)}
.hp-lead{margin:0;max-width:520px;color:var(--muted);font-size:14px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hp-search{display:flex;align-items:center;gap:8px;margin-top:16px;max-width:520px;padding:6px 6px 6px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);box-shadow:0 10px 30px -14px rgba(16,40,30,.25);color:var(--muted)}
.hp-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;box-shadow:none;height:38px;padding:0;font-size:14.5px}
.hp-search .btn{border-radius:12px;min-height:38px}
.hp-quick{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;margin-top:10px;font-size:13px;color:var(--muted)}
.hp-quick a{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px 0 10px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--c)}
.hp-quick a b{font-weight:500;color:var(--ink-2)}
.hp-quick a:hover{border-color:var(--c)}
.hp-quick svg{width:14px;height:14px}
.hp-trust{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:4px 16px;font-size:12.5px;color:var(--muted)}
.hp-trust li{display:inline-flex;align-items:center;gap:7px}
.hp-trust svg{color:var(--brand)}
.hp-illus{position:relative;align-self:end;min-height:200px;padding-top:34px;display:grid;place-items:end center}
.hp-illus img{max-width:100%;max-height:230px;object-fit:contain}
.hp-scene{width:100%;max-height:230px;height:auto;display:block}
.hp-floor{fill:var(--brand-soft)}
.hp-hand{position:absolute;right:0;top:0;max-width:230px;font-family:var(--f-hand);font-weight:600;font-size:19px;line-height:1.05;color:var(--brand);transform:rotate(-4deg);text-align:right}
.hp-bub{position:absolute;z-index:1;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;color:#fff;box-shadow:0 8px 20px -8px rgba(0,0,0,.35);animation:hp-fl 6s ease-in-out infinite}
.hp-bub svg{width:18px;height:18px}
@keyframes hp-fl{50%{transform:translateY(-8px)}}
.hp-prog{padding:14px 16px;border-radius:18px;background:var(--surface);border:1px solid var(--line);box-shadow:0 14px 34px -16px rgba(16,40,30,.28)}
.hp-prog-h{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.hp-prog-h svg{color:var(--brand)}
.hp-prog-h h2{margin:0;font-size:15px}
.hp-prog-h a{margin-left:auto;display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:600;color:var(--brand)}
.hp-prog-h .tag{margin-left:auto}
.hp-prog-c{margin:0 0 6px;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.hp-dot{width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex:none;background:var(--brand);color:#fff}
.hp-dot svg{width:13px;height:13px}
.hp-pbar{display:flex;align-items:center;gap:10px;margin:6px 0 10px}
.hp-pbar .t{flex:1;height:6px;border-radius:99px;background:var(--tint);overflow:hidden}
.hp-pbar .t i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),color-mix(in srgb,var(--brand) 65%,#3fd0a0))}
.hp-pbar b{font-size:13px;color:var(--brand)}
.hp-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.hp-steps a,.hp-steps .a{display:flex;align-items:center;gap:10px;padding:6px 10px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);transition:border-color .15s}
.hp-steps a:hover{border-color:var(--brand)}
.hp-steps .d{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--tint);color:var(--muted)}
.hp-steps .tx{min-width:0;display:flex;flex-direction:column}
.hp-steps .tx b{font-size:13px;line-height:1.3;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hp-steps .tx small{font-size:11.5px;line-height:1.3;color:var(--muted)}
.hp-steps .go{margin-left:auto;flex:none;color:var(--muted)}
.hp-steps .s-done .d{background:var(--brand);color:#fff}
.hp-steps .s-open .d{background:var(--brand-soft);color:var(--brand)}
.hp-steps .s-now a,.hp-steps .s-now .a{border:1.5px solid var(--brand);background:color-mix(in srgb,var(--brand-soft) 50%,var(--surface))}
.hp-steps .s-now .d{background:var(--brand);color:#fff;box-shadow:0 0 0 4px var(--brand-soft)}
.hp-steps .s-now .go{color:var(--brand)}
.hp-steps .s-lock a,.hp-steps .s-lock .a{background:var(--subtle);border-color:transparent}
.hp-steps .s-lock .tx b,.hp-steps .s-lock .tx small{color:var(--muted);opacity:.8}
.hp-cheer{margin:6px 0 0;display:flex;align-items:center;gap:6px;font-family:var(--f-hand);font-weight:600;font-size:18px;line-height:1.1;color:var(--brand)}
.hp-cheer svg{color:#E6A700;fill:currentColor}
.hp-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:14px}
.hp-stat{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);color:var(--ink);transition:transform .15s,box-shadow .15s}
.hp-stat:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.hp-stat .ico{width:40px;height:40px;border-radius:12px}
.hp-stat .ico svg{width:20px;height:20px}
.hp-stat > span:nth-child(2){min-width:0}
.hp-stat b{display:block;font-family:var(--f-display);font-size:20px;font-weight:600;line-height:1.1;color:var(--ink)}
.hp-stat small{display:block;font-size:12.5px;color:var(--muted)}
.hp-stat > svg{margin-left:auto;flex:none;color:var(--muted)}
.hp-sec{display:flex;flex-direction:column;margin-top:48px;min-width:0}
.hp-sh{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.hp-sh2{margin-top:40px}
.hp-sh h2{margin:0;font-size:22px}
.hp-sh p{margin:2px 0 0;font-size:13.5px;color:var(--muted)}
.hp-sec-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;flex:none;background:var(--brand-soft);color:var(--brand)}
.hp-subs{display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));gap:12px}
.hp-sub{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;border-radius:18px;background:var(--surface);border:1px solid var(--line);text-align:center;color:var(--ink);transition:transform .2s,box-shadow .2s,border-color .2s}
.hp-sub:hover{transform:translateY(-3px);border-color:var(--c);box-shadow:var(--sh-lg)}
.hp-sub.on{border-color:var(--c);box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 18%,transparent)}
.hp-sub .ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c)}
.hp-sub .ic svg{width:24px;height:24px}
.hp-sub b{font-size:13.5px;font-weight:600;line-height:1.3}
.hp-sub small{font-size:12px;color:var(--muted)}
.hp-filter{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;padding:10px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.hp-fs{flex:1 1 240px;display:flex;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--line);border-radius:11px;color:var(--muted)}
.hp-fs input{flex:1;min-width:0;border:0;outline:0;background:transparent;box-shadow:none;height:40px;padding:0}
.hp-filter select{width:auto;flex:0 1 190px;height:42px;min-width:150px;border-radius:11px}
.hp-filter .btn{min-height:42px;border-radius:11px}
.hp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.hp-co{display:flex;flex-direction:column;overflow:hidden;border-radius:18px;background:var(--surface);border:1px solid var(--line);transition:transform .2s,box-shadow .2s}
.hp-co:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.hp-cover{position:relative;display:block;aspect-ratio:2/1;overflow:hidden}
.hp-art{width:100%;height:100%;display:block}
.hp-tag{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:700;color:#fff;background:var(--c);max-width:calc(100% - 64px)}
.hp-tag svg{width:13px;height:13px;flex:none}
.hp-subj{position:absolute;right:12px;top:12px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--c)}
.hp-cb{flex:1;padding:14px 16px 0}
.hp-sn{font-size:12.5px;font-weight:600;color:var(--c)}
.hp-cb h3{margin:2px 0 0;font-size:16px;line-height:1.3}
.hp-cb h3 a{color:var(--ink)}.hp-cb h3 a:hover{color:var(--brand)}
.hp-cb p{margin:4px 0 12px;font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.6em}
.hp-cm{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12.5px;color:var(--muted)}
.hp-cm span{display:inline-flex;align-items:center;gap:5px}
.hp-cm svg{color:var(--brand);width:15px;height:15px}
.hp-cf{display:flex;align-items:center;gap:12px;padding:14px 16px 16px}
.hp-pr b{display:block;font-family:var(--f-display);font-size:16px;font-weight:600;line-height:1.2}
.hp-pr b s{font-weight:400;font-size:12.5px;color:var(--muted);margin-right:4px}
.hp-pr small{display:block;font-size:11.5px;font-weight:600;color:var(--brand)}
.hp-cf .btn{margin-left:auto;min-height:38px;padding:0 14px;border-radius:11px}
.hp-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:40px;border-radius:18px;color:var(--muted)}
.hp-empty svg{width:34px;height:34px}
.hp-empty b{color:var(--ink)}
.hp-feats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.hp-feat{display:flex;align-items:flex-start;gap:14px;padding:18px;border-radius:18px;background:var(--surface);border:1px solid var(--line);transition:border-color .15s}
.hp-feat:hover{border-color:var(--brand)}
.hp-feat .ico{width:46px;height:46px;border-radius:50%}
.hp-feat .ico svg{width:21px;height:21px}
.hp-feat b{display:block;font-size:14.5px;margin-bottom:3px}
.hp-feat p{margin:0;font-size:12.5px;color:var(--muted)}
.hp-teach{position:relative;margin-top:56px;display:grid;grid-template-columns:minmax(0,1fr) 220px minmax(0,1.2fr);gap:20px;align-items:center;padding:28px;border-radius:26px;border:1px solid var(--line);overflow:hidden;background:linear-gradient(120deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 40%,var(--surface)))}
.hp-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--brand);font-size:12px;font-weight:700}
.hp-teach h2{margin:12px 0 8px;font-size:clamp(22px,2.4vw,28px);line-height:1.2}
.hp-teach-copy > p{margin:0 0 18px;font-size:14px;color:var(--muted)}
.hp-teach-copy .row{display:flex;flex-wrap:wrap;gap:10px}
.hp-teach-copy .hp-fine{margin:10px 0 0;font-size:12px;color:var(--muted)}
.hp-teach-art{position:relative;align-self:stretch;min-height:200px;display:grid;place-items:end center}
.hp-teach-art img{max-width:100%;max-height:260px;object-fit:contain}
.hp-teach-art svg{width:100%;height:auto;display:block}
.hp-teach-art .hp-hand{top:0;right:auto;left:30%;font-size:22px}
.hp-tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.hp-tool{display:flex;align-items:flex-start;gap:12px;padding:14px;border-radius:16px;background:var(--surface);border:1px solid var(--line);color:var(--ink);transition:border-color .15s,transform .15s}
.hp-tool:hover{border-color:var(--brand);transform:translateY(-2px)}
.hp-tool .ico{width:38px;height:38px;border-radius:10px}
.hp-tool > span:nth-child(2){min-width:0;flex:1}
.hp-tool b{display:block;font-size:14px}
.hp-tool small{display:block;margin-top:2px;font-size:12px;line-height:1.45;color:var(--muted)}
.hp-tool > svg{align-self:center;flex:none;color:var(--muted)}
@media (max-width:1180px){
  .hp-hero{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .hp-prog{grid-column:1/-1}
  .hp-feats{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hp-teach{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .hp-teach-art{display:none}
}
@media (max-width:820px){
  .hp-hero{grid-template-columns:minmax(0,1fr);padding:16px;border-radius:20px}
  .hp-illus{display:none}
  .hp-lead{-webkit-line-clamp:4}
  .hp-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .hp-stat{padding:12px;gap:10px}.hp-stat .ico{width:40px;height:40px}.hp-stat b{font-size:19px}.hp-stat > svg{display:none}
  .hp-subs{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
  .hp-sub{padding:12px 4px}.hp-sub .ic{width:42px;height:42px}.hp-sub small{display:none}
  .hp-feats,.hp-tools{grid-template-columns:minmax(0,1fr)}
  .hp-teach{grid-template-columns:minmax(0,1fr);padding:22px 16px;border-radius:22px}
  .hp-sec{margin-top:36px}
  .hp-filter select{flex:1 1 140px}
}
@media (max-width:480px){
  .hp-search{flex-wrap:wrap;padding:8px}
  .hp-search input{flex:1 1 60%}
  .hp-search .btn{flex:1 0 100%}
  .hp-subs{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hp-grid{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){.hp-bub{animation:none}.hp-co,.hp-stat,.hp-sub,.hp-tool{transition:none}}
.pub-nav a svg{margin-right:6px;vertical-align:-3px}
.pub-nav a[aria-current="page"]{color:var(--brand);background:var(--brand-soft);font-weight:600}
.hp-chead{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,260px);gap:20px;align-items:center;padding:22px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(120deg,color-mix(in srgb,var(--c) 10%,var(--surface)),var(--surface) 75%)}
.hp-chead-art{border-radius:16px;overflow:hidden;aspect-ratio:2/1;box-shadow:var(--sh)}
.hp-chead-art .hp-art{width:100%;height:100%;display:block}
.hp-subtag{display:inline-flex;align-items:center;gap:5px;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;color:var(--c);background:color-mix(in srgb,var(--c) 14%,transparent)}
.hp-subtag svg{width:13px;height:13px}
@media (max-width:820px){.hp-chead{grid-template-columns:minmax(0,1fr);padding:16px;border-radius:18px}.hp-chead-art{order:-1;max-height:150px;aspect-ratio:auto;height:130px}.hp-chead-art .hp-art{object-fit:cover}}
:root{--r:16px;--r5:18px}

/* ---------- Ngân hàng câu hỏi: lưới môn (qs) và lưới câu hỏi (qg) có phân trang ---------- */
.qs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.qs-card{display:flex;flex-direction:column;gap:14px;padding:16px;border-radius:18px;background:var(--surface);border:1px solid var(--line);color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s,border-color .15s}
.qs-card:hover{transform:translateY(-3px);border-color:var(--c);box-shadow:var(--sh-lg)}
.qs-h{display:flex;align-items:center;gap:12px;min-width:0}
.qs-ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;flex:none;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c)}
.qs-ic svg{width:22px;height:22px}
.qs-t{min-width:0;flex:1}
.qs-t h3{margin:0;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qs-t p{margin:2px 0 0;font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qs-go{color:var(--muted);flex:none}
.qs-nums{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.qs-nums > div{display:flex;flex-direction:column;gap:1px;padding:8px 10px;border-radius:12px;background:var(--subtle);border:1px solid var(--line-2)}
.qs-nums b{font-family:var(--f-display);font-size:19px;font-weight:600;line-height:1.15;font-variant-numeric:tabular-nums}
.qs-nums span{font-size:12px;color:var(--muted)}
.qs-nums .ok b{color:var(--ok)}
.qs-f{display:flex}
.qs-empty{grid-column:1/-1}
.qg-wrap{display:flex;flex-direction:column;gap:10px;padding:12px}
.qg-all{align-self:flex-start;gap:8px}
.qg-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.qg-card{display:flex;flex-direction:column;gap:8px;min-width:0;padding:12px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--line-strong);transition:box-shadow .15s,border-color .15s}
.qg-card:hover{box-shadow:var(--sh-lg);border-color:var(--line-strong)}
.qg-card.st-1{border-left-color:var(--ok)}
.qg-card.st-0{border-left-color:var(--warn)}
.qg-h{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.qg-h input[type=checkbox]{flex:none}
.qg-sum{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-weight:500;line-height:1.45;color:var(--ink);text-decoration:none;min-height:4.35em;overflow-wrap:anywhere}
.qg-sum:hover{color:var(--brand)}
.qg-meta{margin:0;display:flex;flex-wrap:wrap;gap:2px 0;font-size:12.5px;color:var(--muted)}
.qg-meta span + span::before{content:"·";margin:0 6px}
.qg-f{display:flex;align-items:center;gap:2px;margin-top:auto;padding-top:8px;border-top:1px solid var(--line-2)}
.qg-lv{color:var(--muted)}
@media (max-width:640px){.qs-grid,.qg-grid{grid-template-columns:minmax(0,1fr)}}

/* ---------- Shadowing: đọc theo câu mẫu (shd) ---------- */
.shd-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.shd-item{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 14px;border-radius:16px;background:var(--subtle);border:1px solid var(--line-2);transition:border-color .15s,box-shadow .15s,background .15s}
.shd-item.ok{border-color:color-mix(in srgb,var(--ok) 45%,var(--line));background:color-mix(in srgb,var(--ok) 6%,var(--surface))}
.shd-item.rec{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.shd-n{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:600;background:var(--surface);border:1px solid var(--line);color:var(--ink-2)}
.shd-item.ok .shd-n{background:var(--ok);border-color:var(--ok);color:#fff}
.shd-main{min-width:0}
.shd-text{margin:0;font-size:17px;line-height:1.55;color:var(--ink);overflow-wrap:anywhere}
.shd-text .sw{padding:0 1px;border-radius:4px;transition:background .15s,color .15s}
.shd-text .sw.ok{color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,transparent)}
.shd-text .sw.miss{color:var(--bad);background:color-mix(in srgb,var(--bad) 12%,transparent);text-decoration:underline wavy;text-underline-offset:3px}
.shd-hint{margin:2px 0 0;font-size:13px;color:var(--muted)}
.shd-res{margin:6px 0 0;font-size:13px;color:var(--muted)}
.shd-res.ok{color:var(--ok);font-weight:600}
.shd-res.bad{color:var(--bad)}
.shd-act{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.shd-tag{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;color:var(--ok)}
.shd-rec.on{background:var(--bad);border-color:var(--bad);animation:shdPulse 1.2s ease-in-out infinite}
.shd-act .btn.on{box-shadow:0 0 0 3px var(--brand-soft)}
.shd-warn{margin:0 0 10px;padding:10px 12px;border-radius:12px;background:color-mix(in srgb,var(--warn) 14%,var(--surface));color:var(--ink);font-size:13px}
@keyframes shdPulse{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--bad) 40%,transparent)}50%{box-shadow:0 0 0 7px transparent}}
.shd-edit{align-items:center}
.shd-edit input[type=text]{flex:1;min-width:0}
@media (max-width:640px){.shd-item{grid-template-columns:30px minmax(0,1fr)}.shd-act{grid-column:1/-1;justify-content:flex-start}}
@media (prefers-reduced-motion:reduce){.shd-rec.on{animation:none}}

/* ---------- Shadowing: âm báo + nghe lại giọng mình; Hội thoại nhập vai (cnv) ---------- */
.shd [hidden],.cnv [hidden]{display:none!important}
.shd .card-h>div,.cnv .card-h>div{flex:1 1 220px;min-width:0}
.shd-sfx{color:var(--muted);margin-left:auto}
.shd-sfx.on{color:var(--brand)}
.shd-act .btn[data-shd-mine].on{background:var(--brand-soft);border-color:var(--brand)}
.cnv-ctx{margin:0 0 14px;padding:10px 12px;border-radius:12px;background:var(--subtle);font-style:italic;font-size:14px;color:var(--ink-2)}
.cnv-pick{text-align:center;padding:6px 0 4px}
.cnv-pick-t{margin:0 0 14px;font-size:16px;font-weight:600;color:var(--ink)}
.cnv-roles{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cnv-role{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:140px;padding:16px 20px;border-radius:18px;border:1px solid var(--line);background:var(--subtle);cursor:pointer;font:inherit;color:var(--ink);transition:border-color .15s,box-shadow .15s,transform .15s}
.cnv-role:hover,.cnv-role:focus-visible{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);transform:translateY(-1px)}
.cnv-role small{color:var(--muted);font-size:12px}
.cnv-av{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;font-weight:700;font-size:15px;background:var(--brand-soft);color:var(--brand)}
.cnv-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.cnv-me{font-size:14px;color:var(--ink-2)}
.cnv-list .cnv-line .shd-n.cnv-av{width:30px;height:30px;font-size:13px;background:var(--surface);color:var(--ink-2)}
.cnv-list .cnv-line.ok .shd-n.cnv-av{background:var(--ok);color:#fff}
.cnv-line.me{background:color-mix(in srgb,var(--brand) 7%,var(--surface));border-color:color-mix(in srgb,var(--brand) 32%,var(--line))}
.cnv-line.me.ok{background:color-mix(in srgb,var(--ok) 7%,var(--surface));border-color:color-mix(in srgb,var(--ok) 45%,var(--line))}
.cnv-line.cur{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.cnv-who{margin:0 0 2px;font-size:12px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.cnv-line:not(.me) .shd-text{color:var(--ink-2)}
.cnv-line .shd-rec.wait{animation:shdPulse 1.2s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.cnv-line .shd-rec.wait,.cnv-role{animation:none;transition:none}}
/* ---- Đăng ký giáo viên: thông tin gọn, bảng giấy tờ, giới thiệu 2 cột (video | thông tin), điền sẵn bằng OCR */
.ta-form{gap:16px}
.ta-form .card{scroll-margin-top:12px}
.ta-info{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start}
.ta-photo{display:flex;flex-direction:column;gap:8px;align-items:stretch;width:96px}
.ta-photo-box{position:relative;width:96px;height:128px;border:1.5px dashed var(--line-strong);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--subtle);cursor:pointer}
.ta-photo-box.has{border-style:solid;border-color:var(--ok)}
.ta-photo-box img{width:100%;height:100%;object-fit:cover}
.ta-photo-box img[hidden]{display:none}
.ta-photo .btn{justify-content:center}
.ta-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 16px}
.ta-grid .s2{grid-column:span 1}
.ta-grid .s4{grid-column:span 2}
.ta-grid .field>label{font-size:12px}
.ta-grid input,.ta-grid select{padding:7px 10px;font-size:14px}
.ta-ocr{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:9px 14px;background:var(--info-soft);color:var(--info);font-size:13px;border-bottom:1px solid var(--line)}
.ta-ocr.ok{background:var(--ok-soft);color:var(--ok)}
.ta-ocr.bad{background:var(--warn-soft);color:var(--warn)}
.ta-docs td{vertical-align:middle}
.ta-docs .ta-group td{background:var(--subtle);font-weight:700;font-size:13px;padding:7px 14px}
.ta-docs td[data-file]{position:relative;min-width:84px}
.ta-docs td.act{white-space:nowrap;text-align:right}
.ta-docs td.act .btn{margin-left:4px}
.ta-docs td.act label.btn{cursor:pointer}
.ta-thumb{display:block;width:84px;height:54px;object-fit:cover;border-radius:6px;border:1px solid var(--line);background:#fff}
.ta-fname{display:inline-flex;gap:6px;align-items:center;font-size:13px;word-break:break-all}
.ta-busy{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:6px;background:rgba(255,255,255,.82);color:#1b2b23;font-weight:600;font-size:12px}
.ta-busy[hidden]{display:none}
.ta-busy.cover{border-radius:10px}
.spin{width:14px;height:14px;border-radius:50%;border:2px solid var(--line-strong);border-top-color:var(--brand);animation:taSpin .8s linear infinite;flex:none}
@keyframes taSpin{to{transform:rotate(360deg)}}
.ta-two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:20px;align-items:start}
.ta-cap{font-weight:700;font-size:13px;display:flex;gap:8px;align-items:center}
.ta-vbox{position:relative;aspect-ratio:16/9;border:1.5px dashed var(--line-strong);border-radius:12px;background:#0e1713;overflow:hidden;display:flex;align-items:center;justify-content:center}
.ta-vbox video{width:100%;height:100%;background:#000}
.ta-vbox video[hidden],.ta-vempty[hidden]{display:none}
.ta-vempty{display:flex;flex-direction:column;align-items:center;gap:6px;color:#9fb3a9;text-align:center;padding:10px}
.ta-vempty svg{width:34px;height:34px}
.field.ta-auto input,.field.ta-auto select{background:var(--ok-soft);border-color:var(--ok)}
.ta-badge{margin-left:6px;font-size:11px}
@media (max-width:860px){.ta-two{grid-template-columns:1fr}.ta-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ta-grid .s4{grid-column:span 2}}
@media (max-width:560px){.ta-info{grid-template-columns:1fr}.ta-photo{flex-direction:row;width:auto;align-items:center}.ta-grid{grid-template-columns:1fr}.ta-grid .s2,.ta-grid .s4{grid-column:span 1}.ta-docs td.act{white-space:normal}}

/* nút loa nghe phát âm (từ vựng) */
.say{display:inline-grid;place-items:center;width:28px;height:28px;margin-left:6px;padding:0;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--brand);cursor:pointer;vertical-align:middle;flex:none}
.say:hover,.say.on{background:var(--brand-soft)}
.say.on{border-color:var(--brand)}
.say svg{width:15px;height:15px}
@media (pointer:coarse){.say{width:38px;height:38px}.say svg{width:18px;height:18px}}