:root{--cyan:#08acc0;--cyan2:#05a0b8;--orange:#f47b00;--ink:#0d1830;--muted:#6d7b90;--bg:#f4f8fa;--line:#dce6ed;--white:#fff;--green:#10cfa0;--shadow:0 12px 32px rgba(19,45,70,.07)}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#eef8fa 0,#f8fafc 22%,#f6f8fb 100%);color:var(--ink);font:14px/1.55 Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{text-decoration:none;color:inherit}.wrap{max-width:1160px;margin:auto;padding:0 20px}.nav{height:62px;background:rgba(255,255,255,.92);border-bottom:1px solid #edf0f4;position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav-in{height:100%;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:8px;min-width:185px}.brand b{width:32px;height:32px;border-radius:10px;background:#08abc0;color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 5px 12px #08abc044}.brand b span{color:#ff8300}.brand strong{font-size:14px}.brand 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#07aabc2e}.btn-orange{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-lg{padding:13px 20px}.stats{display:flex;gap:35px;margin-top:25px}.stats b{display:block;font-size:24px}.stats span{color:var(--muted);font-size:12px}.hero-card,.card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.hero-card{padding:25px}.mini{display:flex;justify-content:space-between}.mini b{color:#08aabc}.progress{height:9px;background:#e5edf2;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,#06aec0,#12d2a7);border-radius:99px}.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.mini-grid div{padding:14px;background:#f7fafb;border-radius:12px}.mini-grid small{display:block;color:var(--muted)}.mini-grid strong{font-size:18px}.section{padding:35px 0}.section.muted{background:#f0f5f7}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px}.section h2{font-size:28px;margin:6px 0}.feature-grid,.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:.2s}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.feature-icon{font-size:24px}.feature-card h3{margin:13px 0 6px}.feature-card p{color:var(--muted);min-height:50px}.feature-card span{color:#00a8ba;font-weight:800}.cta{background:linear-gradient(100deg,#09afbf,#0a9db4);color:#fff;padding:28px;border-radius:20px;display:flex;justify-content:space-between;align-items:center}.cta .eyebrow{background:#ffffff22;color:#fff}.page{padding:36px 0 70px}.page-head{text-align:center;margin-bottom:24px}.page-head h1{font-size:34px;margin:8px 0}.page-head p{color:var(--muted)}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tab{padding:9px 14px;border:1px solid var(--line);border-radius:99px;background:#fff;cursor:pointer}.tab.active{background:#08aec0;color:#fff;border-color:#08aec0}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.topic{padding:17px;background:#fff;border:1px solid var(--line);border-radius:15px}.topic h3{margin:7px 0;font-size:15px}.topic p{font-size:12px;color:var(--muted);height:38px}.tag{display:inline-block;background:#eef0ff;color:#6644d9;border-radius:99px;padding:4px 8px;font-size:10px;font-weight:800}.actions-row{display:flex;gap:7px}.small{padding:7px 10px;font-size:12px}.lesson{max-width:900px;margin:auto}.question-card{padding:28px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);margin-top:20px}.option{display:flex;align-items:center;gap:13px;width:100%;text-align:left;border:1px solid var(--line);background:#fff;padding:15px;border-radius:12px;margin:10px 0;cursor:pointer}.option:hover{border-color:#08b1c0;background:#f1fbfc}.letter{width:30px;height:30px;border-radius:50%;background:#f0f3f6;display:grid;place-items:center;font-weight:800}.answer{background:#eafbf6;border-color:#1ec99f}.vocab-card{padding:45px;text-align:center}.word{font-size:46px;font-weight:900}.meaning{font-size:20px;margin:10px}.pron{display:flex;gap:18px;justify-content:center;color:#607084}.vocab-actions{display:flex;justify-content:center;gap:10px;margin-top:30px}.stats4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.stat b{display:block;font-size:25px}.stat small{color:var(--muted)}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.bar{height:8px;background:#e4edf2;border-radius:99px;overflow:hidden}.bar i{display:block;height:100%;background:#08b4c0}.list{display:grid;gap:10px}.list-item{background:#fff;border:1px solid var(--line);border-radius:13px;padding:14px;display:flex;justify-content:space-between;align-items:center}.level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.level-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:16px}.level-card.protected{opacity:.7}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.video{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}.thumb{height:145px;background:linear-gradient(135deg,#058cc8,#08b3c0);display:grid;place-items:center;color:white;font-size:38px}.video-body{padding:15px}.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.post{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}.post-img{height:170px;background:linear-gradient(135deg,#223a56,#d0a06c)}.post-body{padding:17px}.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.price{padding:24px;background:#fff;border:1px solid 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#26354f;padding:20px;border-radius:14px;margin:14px 0}.exam .option{background:#121f38;color:#e7edf8;border-color:#2d3d59}.exam .letter{background:#23314a}.rank{display:grid;grid-template-columns:40px 1fr 90px;gap:10px;padding:11px;border-bottom:1px solid var(--line);align-items:center}.chat{max-width:800px;margin:auto}.bubble{padding:14px;border-radius:14px;margin:10px 0;background:#fff;border:1px solid var(--line)}.bubble.me{background:#e7fbfd;margin-left:100px}.notice{padding:13px;border-radius:12px;background:#fff8e8;border:1px solid #f5dc9c}.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:18px}.side{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;height:max-content}.side a{display:block;padding:10px;border-radius:9px}.side a:hover{background:#eaf8fa}.empty{padding:40px;text-align:center;color:var(--muted)}@media(max-width:1000px){.links,.nav-right{display:none}.hamb{display:block;margin-left:auto}.menu-open .links,.menu-open 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/* V3 DESIGN SYSTEM — mềm mại, hiện đại, sáng/tối */
:root{--font:'Roboto',Arial,sans-serif;--glass:rgba(255,255,255,.72);--shadow2:0 18px 55px rgba(15,35,65,.10);--shadow3:0 8px 28px rgba(15,35,65,.08);--ease:cubic-bezier(.2,.8,.2,1)}
html{scroll-behavior:smooth}body{font-family:var(--font)!important;background:radial-gradient(circle at 10% 0%,rgba(8,172,192,.10),transparent 28%),radial-gradient(circle at 90% 10%,rgba(244,123,0,.08),transparent 24%),linear-gradient(180deg,var(--bg),#fbfcfe);transition:background .35s,color .35s}.nav{background:color-mix(in srgb,var(--card) 86%,transparent);border-color:color-mix(in srgb,var(--muted) 15%,transparent);box-shadow:0 5px 25px rgba(0,0,0,.04)}.nav-in{gap:18px}.links>a,.nav-right>a{transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s}.links>a:hover,.nav-right>a:hover{transform:translateY(-2px)}.links>a:hover{background:color-mix(in srgb,var(--primary) 10%,var(--card));box-shadow:0 7px 20px rgba(8,172,192,.10)}.brand b{transition:transform .35s var(--ease),box-shadow .35s}.brand:hover b{transform:rotate(-5deg) scale(1.08);box-shadow:0 10px 24px rgba(8,172,192,.28)}.btn,.card,.panel,.topic,.feature-card,.hero-card,.list-item,.stat,.level-card,.video,.question-card,.vocab-card{transition:transform .3s var(--ease),box-shadow .3s,border-color .3s,background .3s}.btn:hover{transform:translateY(-2px)}.card:hover,.panel:hover,.feature-card:hover,.topic:hover,.stat:hover,.level-card:hover,.video:hover{transform:translateY(-5px);box-shadow:var(--shadow2);border-color:color-mix(in srgb,var(--primary) 28%,var(--line))}.hero-card{box-shadow:var(--shadow2);position:relative;overflow:hidden}.hero-card:before,.card:before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,rgba(255,255,255,.25),transparent 35%);opacity:.8}.eyebrow,.tag{box-shadow:0 5px 15px rgba(8,172,192,.08)}.section{position:relative}.feature-card{position:relative;overflow:hidden}.feature-card:after{content:"";position:absolute;width:90px;height:90px;border-radius:50%;right:-35px;top:-35px;background:radial-gradient(circle,rgba(8,172,192,.14),transparent 68%);transition:transform .45s var(--ease)}.feature-card:hover:after{transform:scale(1.7)}.option{transition:transform .2s var(--ease),border-color .2s,background .2s,box-shadow .2s}.option:hover{transform:translateX(4px);box-shadow:0 9px 22px rgba(8,172,192,.10)}.option input:checked + .letter{background:var(--primary);color:#fff}.theme-toggle{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer;font-size:17px;transition:.25s}.theme-toggle:hover{transform:rotate(12deg) scale(1.05);box-shadow:var(--shadow3)}.admin-link{color:var(--primary)!important;font-weight:800}.footer{background:var(--card);border-top:1px solid var(--line);transition:.3s}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer a{display:block;margin:6px 0;color:var(--muted);transition:.2s}.footer a:hover{color:var(--primary);transform:translateX(3px)}.admin-layout{display:grid;grid-template-columns:230px 1fr;gap:20px}.side{position:sticky;top:85px;align-self:start;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow3)}.side a{display:flex;gap:10px;padding:11px 13px;border-radius:12px;color:var(--muted);font-weight:600;transition:.2s}.side a:hover,.side a.active{background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary);transform:translateX(3px)}.table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}.table th{background:color-mix(in srgb,var(--primary) 8%,var(--card));color:var(--text);font-size:12px;text-align:left}.table th,.table td{padding:12px;border-bottom:1px solid var(--line)}input,select,textarea{font:inherit;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:11px 13px;outline:none;transition:.2s}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 12%,transparent)}textarea{min-height:120px;width:100%;resize:vertical}.notice{border:1px solid color-mix(in srgb,var(--primary) 20%,var(--line));background:color-mix(in srgb,var(--primary) 7%,var(--card));color:var(--text);border-radius:13px;padding:12px 14px}.admin-stat{position:relative;overflow:hidden}.admin-stat strong{font-size:30px}.admin-nav-title{font-size:11px;text-transform:uppercase;color:var(--muted);padding:10px 13px 5px;font-weight:800;letter-spacing:.06em}.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:800;background:color-mix(in srgb,var(--primary) 12%,var(--card));color:var(--primary)}.badge-orange{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}.badge-green{background:color-mix(in srgb,var(--success) 12%,transparent);color:#0a9b79}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.kpi{padding:20px;border-radius:18px;background:linear-gradient(145deg,var(--card),color-mix(in srgb,var(--primary) 3%,var(--card)));border:1px solid var(--line);box-shadow:var(--shadow3)}.kpi .icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:color-mix(in srgb,var(--primary) 12%,var(--card));margin-bottom:10px}.kpi b{font-size:27px}.kpi small{color:var(--muted)}.toolbar{display:flex;gap:9px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:15px}.toolbar-left,.toolbar-right{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.searchbox{min-width:220px}.crud-form{display:grid;gap:12px}.form-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.action-buttons{display:flex;gap:6px;flex-wrap:wrap}.btn-danger{background:var(--danger)!important;border-color:var(--danger)!important;color:#fff!important}.btn-soft{background:color-mix(in srgb,var(--primary) 8%,var(--card));border-color:color-mix(in srgb,var(--primary) 18%,var(--line));color:var(--primary)}.switch{display:flex;align-items:center;gap:8px}.switch input{width:auto}.toast{position:fixed;right:20px;bottom:20px;z-index:9999;background:var(--text);color:var(--card);padding:12px 16px;border-radius:13px;box-shadow:var(--shadow2);animation:toastIn .35s var(--ease)}@keyframes toastIn{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.page>.wrap>*{animation:rise .45s var(--ease) both}.page>.wrap>*:nth-child(2){animation-delay:.04s}.page>.wrap>*:nth-child(3){animation-delay:.08s}
/* Dark mode */
html[data-theme="dark"]{color-scheme:dark}html[data-theme="dark"] body{--line:#273348;--card:#121b2b;--text:#e8eef7;--muted:#98a8bd;--bg:#09111f;background:radial-gradient(circle at 10% 0%,rgba(8,172,192,.12),transparent 28%),radial-gradient(circle at 90% 10%,rgba(244,123,0,.09),transparent 24%),#09111f;color:var(--text)}html[data-theme="dark"] .nav{background:rgba(12,21,35,.86)}html[data-theme="dark"] .btn,html[data-theme="dark"] .option,html[data-theme="dark"] input,html[data-theme="dark"] select,html[data-theme="dark"] textarea{background:var(--card);color:var(--text)}html[data-theme="dark"] .section.muted{background:#0c1625}html[data-theme="dark"] .mini-grid div{background:#0d1726}html[data-theme="dark"] .darkbtn{background:#e9f0f7;color:#0d1830}.theme-toggle:after{content:""}html[data-theme="dark"] .theme-toggle{background:#1a2639;color:#fff}
@media(max-width:1000px){.links{display:none}.nav-right>a:not(.pro):not(.userchip):not(.admin-link){display:none}.nav-right{margin-left:auto}.hamb{display:block}.menu-open .links{display:flex;position:absolute;top:62px;left:12px;right:12px;background:var(--card);padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow2);flex-direction:column;align-items:stretch}.menu-open .links>a{display:block}.admin-layout{grid-template-columns:1fr}.side{position:static}.kpi-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.hero{padding:35px 0}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:36px}.feature-grid,.grid3,.video-grid,.level-grid,.topic-grid{grid-template-columns:1fr}.stats4{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.form-grid-2,.form-grid-3{grid-template-columns:1fr}.kpi-grid{grid-template-columns:1fr 1fr}.admin-layout{gap:12px}.page{padding-top:24px}.page-head h1{font-size:28px}.searchbox{min-width:160px;width:100%}}
/* V4 — trình phát video & giao diện luyện nghe */
.video-watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px;align-items:start}.video-stage{background:#07101d;border-radius:22px;overflow:hidden;box-shadow:0 20px 60px rgba(9,24,45,.18);border:1px solid rgba(255,255,255,.08);position:relative}.protected-video{display:block;width:100%;max-height:650px;aspect-ratio:16/9;background:#000;object-fit:contain}.embed-video{position:relative;aspect-ratio:16/9;background:#000}.embed-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-empty{height:420px;display:grid;place-items:center;color:#9aabc1;text-align:center}.video-empty span{font-size:64px}.video-info{margin-top:15px;padding:24px}.video-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.video-info h1{margin:12px 0 8px}.video-protect-note{margin-top:14px;padding:12px 14px;border-radius:14px;background:color-mix(in srgb,var(--primary) 7%,var(--card));border:1px solid color-mix(in srgb,var(--primary) 15%,var(--line));color:var(--muted);font-size:13px}.video-playlist{padding:15px;position:sticky;top:85px}.video-playlist h3{padding:5px 8px 12px;margin:0}.playlist-item{display:grid;grid-template-columns:34px 1fr 16px;gap:10px;align-items:center;padding:11px;border-radius:14px;color:var(--text);transition:.22s}.playlist-item:hover,.playlist-item.active{background:color-mix(in srgb,var(--primary) 8%,var(--card));transform:translateX(3px)}.playlist-no{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary);font-weight:800}.playlist-item b{font-size:13px;display:block}.playlist-item small{color:var(--muted);display:block;margin-top:3px}.video-breadcrumb{display:flex;gap:10px;color:var(--muted);align-items:center;margin-bottom:14px}.video-breadcrumb a{color:var(--primary);font-weight:700}.paywall{padding:55px;text-align:center}.paywall-icon{font-size:55px;margin-bottom:10px}
.listening-exam-page{padding:12px 14px 14px;min-height:calc(100vh - 75px);background:#f2f5f8}.listen-shell{max-width:1680px;margin:auto;background:#fff;border:1px solid #d9e1ea;border-radius:18px;overflow:hidden;box-shadow:0 15px 45px rgba(20,40,65,.12)}.listen-top{height:58px;background:#182b42;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 14px;gap:12px}.listen-top-left,.listen-tools{display:flex;align-items:center;gap:8px}.listen-exit{display:flex;align-items:center;gap:7px;color:#fff;background:#263b54;border-radius:10px;padding:8px 12px}.listen-pill,.listen-tools button,.listen-score,.listen-progress{border-radius:10px;padding:8px 11px;font-size:12px;font-weight:700;white-space:nowrap}.listen-pill.cyan{background:#00a8c6}.listen-pill.level{background:#00a8c6}.listen-tools button{border:0;background:#263b54;color:#fff}.listen-score{background:#263b54}.listen-progress{background:#263b54;color:#8fe7ef}.listen-grid{display:grid;grid-template-columns:1fr 1fr;min-height:760px}.listen-left{padding:25px 21px 20px;border-right:1px solid #dfe6ee}.listen-prompt{font-size:15px;color:#14233a;margin:0 0 14px}.audio-player-card{position:relative;border:1px solid #dce4ed;border-radius:12px;padding:16px 14px 12px;margin-bottom:15px;background:linear-gradient(180deg,#fff,#f8fbfd)}.audio-player-card audio{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.audio-play{width:44px;height:44px;border:0;border-radius:50%;background:#13b9a0;color:#fff;font-size:19px;box-shadow:0 7px 18px rgba(19,185,160,.25);float:left;margin:4px 12px 0 0;cursor:pointer}.audio-main{overflow:hidden}.waveform{height:58px;display:flex;align-items:center;gap:3px;overflow:hidden}.waveform i{width:4px;height:var(--h);background:#cbd6e3;border-radius:99px;transition:height .2s}.waveform.playing i{animation:wave .65s ease-in-out infinite alternate}.waveform.playing i:nth-child(3n){animation-delay:.08s}.waveform.playing i:nth-child(4n){animation-delay:.18s}.waveform.playing i:nth-child(5n){animation-delay:.28s}@keyframes wave{from{transform:scaleY(.45)}to{transform:scaleY(1.08)}}.audio-time{display:flex;justify-content:space-between;color:#718096;font-size:12px}.audio-actions{display:flex;gap:7px;margin:9px 0}.audio-actions button,.report-btn{background:#fff;border:1px solid #d7e0ea;color:#27364b;border-radius:9px;padding:6px 10px;cursor:pointer}.audio-hints{font-size:11px;color:#718096}.audio-hints kbd{border:1px solid #d7e0ea;border-radius:4px;background:#fff;padding:2px 5px;margin-left:5px}.autoplay-fallback{display:none;margin-top:9px;padding:8px 10px;border-radius:9px;background:#eafbf8;color:#0b907e;font-weight:700;cursor:pointer}.listen-image-wrap{border:1px solid #dce4ed;border-radius:10px;overflow:hidden;background:#f2f4f6}.listen-image-wrap img{display:block;width:100%;height:auto;max-height:550px;object-fit:cover;user-select:none;-webkit-user-drag:none;filter:grayscale(.7)}.listen-image-placeholder{height:530px;border:1px dashed #cbd6e2;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#8392a5;background:linear-gradient(135deg,#f6f8fa,#edf1f5);gap:8px}.listen-image-placeholder span{font-size:54px;opacity:.5}.listen-right{padding:25px 21px}.question-head{display:flex;justify-content:space-between;align-items:center}.question-head h2{font-size:17px;margin:0 0 12px}.report-btn{color:#06a9bf;border-color:#06a9bf}.listen-question-card{border:2px solid #4a92ff;border-radius:12px;padding:18px}.question-number{font-size:18px;font-weight:700;margin-bottom:8px}.answer-row{width:100%;display:flex;align-items:center;gap:12px;text-align:left;background:#fff;border:1px solid #d8e1ec;border-radius:11px;padding:12px 14px;margin:8px 0;color:#223047;font-size:15px;cursor:pointer;transition:.2s}.answer-row:hover{border-color:#7bb0ff;background:#f7fbff;transform:translateX(2px)}.answer-row.selected{border-color:#4a92ff;background:#eef6ff;box-shadow:0 0 0 2px rgba(74,146,255,.08)}.radio-dot{width:21px;height:21px;border:2px solid #cbd7e5;border-radius:50%;flex:none}.answer-row.selected .radio-dot{border-color:#4a92ff;box-shadow:inset 0 0 0 5px #fff;background:#4a92ff}.check-answer{width:100%;border:0;border-radius:11px;background:#9fe4d8;color:#fff;padding:13px;font-weight:800;margin-top:12px;cursor:pointer}.check-answer:hover{background:#72d5c6}.answer-result{margin-top:12px;border-radius:10px;padding:11px;text-align:center;font-weight:800}.answer-result.correct{background:#e7faf2;color:var(--success-dark)}.answer-result.wrong{background:#fff0f0;color:#d64c5c}.listen-bottom{height:48px;border-top:1px solid #dce4ed;background:#fbfcfd;display:flex;justify-content:space-between;align-items:center;padding:0 16px;color:#65748a}.listen-bottom button{border:0;background:transparent;color:#65748a;margin-right:14px;cursor:pointer}.question-nav{display:flex;align-items:center;gap:9px}.nav-arrow{width:31px;height:31px;border:1px solid #dce4ed;border-radius:9px;display:grid;place-items:center;color:#52627a;background:#fff;font-size:22px}.question-nav>span{min-width:42px;text-align:center;background:#09aec2;color:#fff;border-radius:10px;padding:8px 10px;font-weight:800}
@media(max-width:1050px){.video-watch-layout{grid-template-columns:1fr}.video-playlist{position:static}.listen-tools button span{display:none}.listen-grid{grid-template-columns:1fr}.listen-left{border-right:0;border-bottom:1px solid #dfe6ee}.listen-image-wrap img{max-height:480px}}@media(max-width:650px){.listening-exam-page{padding:0}.listen-shell{border-radius:0}.listen-top{height:auto;min-height:56px;flex-wrap:wrap;padding:8px}.listen-tools{overflow:auto;max-width:100%}.listen-top-left{max-width:100%;overflow:auto}.listen-left,.listen-right{padding:16px 12px}.listen-bottom{height:auto;padding:8px 10px}.listen-bottom button{margin-right:6px}.listen-prompt{font-size:14px}.listen-image-placeholder{height:320px}.video-info{padding:17px}}

/* V5 — mềm mại, hoạt ảnh, dashboard và CMS */
:root{--ease:cubic-bezier(.2,.8,.2,1);--shadow2:0 18px 55px rgba(18,42,65,.11);--shadow3:0 10px 30px rgba(18,42,65,.08)}
body{overflow-x:hidden;transition:background .4s ease,color .3s ease}.hero-home{position:relative;overflow:hidden;padding:72px 0 28px;isolation:isolate}.hero-home:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 18% 28%,rgba(8,172,192,.12),transparent 27%),radial-gradient(circle at 83% 35%,rgba(244,123,0,.10),transparent 24%);z-index:-3}.hero-orb{position:absolute;border-radius:50%;filter:blur(1px);pointer-events:none;z-index:-2;animation:orbFloat 8s ease-in-out infinite}.orb-a{width:240px;height:240px;left:-100px;top:20px;background:radial-gradient(circle,rgba(8,172,192,.17),transparent 68%)}.orb-b{width:180px;height:180px;right:4%;top:50px;background:radial-gradient(circle,rgba(244,123,0,.15),transparent 68%);animation-delay:-2s}.orb-c{width:110px;height:110px;right:28%;bottom:50px;background:radial-gradient(circle,rgba(10,207,160,.12),transparent 68%);animation-delay:-4s}@keyframes orbFloat{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(0,-18px,0)}}
.hero-title{letter-spacing:-1.8px;text-wrap:balance}.hero-title span,.gradient-text{background:linear-gradient(100deg,var(--primary),#00c9bf 45%,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% auto;animation:gradientShift 5s ease infinite}@keyframes gradientShift{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}.floating-badge{animation:floatSoft 4.5s ease-in-out infinite}.hero-visual{position:relative;min-height:410px;display:grid;place-items:center}.hero-dashboard-card{position:relative;width:min(390px,90%);padding:28px;background:color-mix(in srgb,var(--card) 94%,transparent);border:1px solid color-mix(in srgb,var(--primary) 20%,var(--border));border-radius:28px;box-shadow:0 30px 80px rgba(8,100,130,.16);backdrop-filter:blur(18px);animation:floatSoft 5s ease-in-out infinite}.hero-dashboard-card:after{content:"";position:absolute;inset:-1px;border-radius:28px;background:linear-gradient(135deg,rgba(255,255,255,.65),transparent 38%,rgba(8,172,192,.12));pointer-events:none}.floating-chip,.floating-done{position:absolute;z-index:2;background:var(--card);border:1px solid var(--border);border-radius:13px;padding:10px 13px;box-shadow:var(--shadow2);font-weight:800}.floating-chip{right:-12px;top:34px;color:var(--accent);animation:floatSoft 4s ease-in-out infinite reverse}.floating-done{left:-24px;bottom:34px;color:var(--success-dark);animation:floatSoft 4.2s ease-in-out infinite}.mini-progress{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;margin:7px 0 18px}.mini-grid div{transition:.25s}.mini-grid div:hover{transform:translateY(-5px);box-shadow:0 12px 25px rgba(8,172,192,.10)}.mini-grid i{color:var(--primary);margin-right:5px}.hero-trust{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:12px}.hero-trust i{color:var(--primary);margin-right:5px}.ticker-wrap{margin-top:24px}.ticker{overflow:hidden;border:1px solid var(--border);background:color-mix(in srgb,var(--card) 82%,transparent);border-radius:16px;padding:11px;box-shadow:0 10px 28px rgba(18,42,65,.05);white-space:nowrap}.ticker-track{display:inline-flex;gap:28px;animation:tickerMove 28s linear infinite}.ticker-track span{font-size:11px;color:var(--muted)}.ticker-track i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#18d6a0;box-shadow:0 0 0 5px rgba(24,214,160,.10)}@keyframes tickerMove{from{transform:translateX(0)}to{transform:translateX(-42%)}}
.counter-section{background:var(--card);border-top:1px solid color-mix(in srgb,var(--border) 60%,transparent);border-bottom:1px solid color-mix(in srgb,var(--border) 60%,transparent);padding:36px 0}.counter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}.counter-grid>div{position:relative}.counter-grid>div:not(:last-child):after{content:"";position:absolute;right:-10px;top:10%;height:80%;border-right:1px dashed var(--border)}.counter-grid b{display:block;font-size:38px;line-height:1;color:var(--accent);font-weight:900;letter-spacing:-1px}.counter-grid b:after{content:"+"}.counter-grid span{display:block;margin-top:7px;color:var(--muted);font-size:12px}.centered{text-align:center;justify-content:center}.centered p{color:var(--muted)}.feature-grid-home{grid-template-columns:repeat(3,1fr)}.feature-card-premium{position:relative;overflow:hidden;border-radius:20px;padding:24px;box-shadow:0 8px 28px rgba(18,42,65,.045)}.feature-card-premium:before{content:"";position:absolute;inset:auto -30px -55px auto;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--primary) 14%,transparent),transparent 68%);transition:.45s}.feature-card-premium:hover:before{transform:scale(1.35)}.feature-card-premium:hover{transform:translateY(-8px) scale(1.01)!important}.feature-icon-wrap{width:46px;height:46px;display:grid;place-items:center;border-radius:14px;background:color-mix(in srgb,var(--primary) 11%,var(--card));color:var(--primary);font-size:20px;box-shadow:0 8px 20px rgba(8,172,192,.10)}.feature-card-premium:nth-child(even) .feature-icon-wrap{background:color-mix(in srgb,var(--accent) 10%,var(--card));color:var(--accent)}.feature-card-premium h3{margin:15px 0 6px}.feature-card-premium span{position:relative}.feature-card-premium span i{transition:transform .2s}.feature-card-premium:hover span i{transform:translateX(5px)}
/* Dark mode: map every text surface to the admin-configured dark palette */
html[data-theme="dark"] body{background:radial-gradient(circle at 10% 0%,rgba(8,172,192,.12),transparent 28%),radial-gradient(circle at 90% 10%,rgba(244,123,0,.08),transparent 24%),var(--bg);color:var(--body-text)}html[data-theme="dark"] .nav{background:color-mix(in srgb,var(--card) 92%,transparent);border-color:var(--border)}html[data-theme="dark"] .links>a{color:var(--nav-text)}html[data-theme="dark"] .card,html[data-theme="dark"] .panel,html[data-theme="dark"] .stat,html[data-theme="dark"] .feature-card,html[data-theme="dark"] .topic,html[data-theme="dark"] .video,html[data-theme="dark"] .price,html[data-theme="dark"] .hero-card,html[data-theme="dark"] .list-item,html[data-theme="dark"] .option{background:var(--card);border-color:var(--border);color:var(--body-text)}html[data-theme="dark"] .muted,html[data-theme="dark"] .page-head p,html[data-theme="dark"] .hero p,html[data-theme="dark"] .feature-card p,html[data-theme="dark"] small,html[data-theme="dark"] .stats span{color:var(--muted)}html[data-theme="dark"] .table th,html[data-theme="dark"] .table td{color:var(--table-text);border-color:var(--border)}html[data-theme="dark"] input,html[data-theme="dark"] select,html[data-theme="dark"] textarea{background:var(--card);color:var(--input-text);border-color:var(--border)}html[data-theme="dark"] .section.muted{background:color-mix(in srgb,var(--bg) 88%,#000)}html[data-theme="dark"] .counter-section{background:var(--card);border-color:var(--border)}html[data-theme="dark"] .counter-grid span,html[data-theme="dark"] .ticker-track span{color:var(--muted)}html[data-theme="dark"] .btn:not(.btn-primary):not(.btn-orange):not(.pro){background:var(--card);color:var(--body-text);border-color:var(--border)}html[data-theme="dark"] .rank-row,html[data-theme="dark"] .skill-row{border-color:var(--border)}
/* Dashboard */
.dashboard-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.dashboard-heading h1{font-size:34px;margin:7px 0}.dashboard-top{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:14px}.xp-hero{position:relative;display:flex;align-items:center;gap:18px;padding:22px 24px;border-radius:18px;color:#fff;background:linear-gradient(110deg,#08afc0,#08a7b7 55%,#08a5b4);box-shadow:0 18px 40px rgba(8,172,192,.18);overflow:hidden}.xp-hero:after{content:"";position:absolute;width:180px;height:180px;right:-60px;top:-70px;border-radius:50%;background:rgba(255,255,255,.08)}.xp-fire{width:52px;height:52px;border-radius:50%;background:linear-gradient(145deg,#ff9b31,#ef6e00);display:grid;place-items:center;font-size:25px;box-shadow:0 9px 25px rgba(244,123,0,.28);flex:none}.xp-main{flex:1}.xp-main>span{font-size:11px;opacity:.88}.xp-main>strong{display:block;font-size:32px;line-height:1.1;margin:4px 0}.level-line{display:flex;justify-content:space-between;font-size:10px;opacity:.85;margin:7px 0}.xp-hero .progress{height:7px;background:rgba(255,255,255,.18)}.xp-hero .progress i{background:#fff}.streak-box{min-width:85px;text-align:center}.streak-box b{display:block;font-size:22px}.streak-box span{display:block;font-size:8px;opacity:.8}.streak-box small{display:block;margin-top:8px;color:#fff}.rank-highlight{text-align:center;padding:20px 14px;display:flex;flex-direction:column;align-items:center;justify-content:center}.rank-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:color-mix(in srgb,var(--accent) 10%,transparent);color:var(--accent);font-size:19px;margin-bottom:8px}.rank-highlight>span{font-size:11px;color:var(--muted)}.rank-highlight>strong{font-size:30px;line-height:1.1;margin:3px 0}.rank-highlight>small{color:var(--muted);font-size:9px}.rank-cta{font-size:11px;color:var(--accent);font-weight:800;margin-top:9px}.dashboard-content{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}.panel-title{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.panel-title h2{font-size:15px;margin:0}.panel-title p{font-size:10px;color:var(--muted);margin:4px 0 0}.panel-title>a{font-size:10px;color:var(--primary);font-weight:800}.skills-panel,.ranking-panel{padding:15px}.skill-row{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--border);border-radius:11px;margin:8px 0;background:var(--card);transition:.22s}.skill-row:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(8,172,192,.08)}.skill-icon{width:29px;height:29px;display:grid;place-items:center;border-radius:9px;background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary);font-size:12px;flex:none}.skill-copy{flex:1}.skill-copy b,.skill-copy small{display:block}.skill-copy b{font-size:11px}.skill-copy small{font-size:8px;color:var(--muted)}.skill-copy em{display:block;height:4px;background:var(--border);border-radius:99px;margin-top:6px;overflow:hidden}.skill-copy em i{display:block;height:100%;background:var(--primary);border-radius:99px}.skill-row>strong{font-size:9px;color:var(--primary)}.ranking-list{border:1px solid var(--border);border-radius:12px;overflow:hidden}.ranking-row{display:grid;grid-template-columns:28px 29px 1fr auto;gap:7px;align-items:center;padding:8px 10px;border-bottom:1px solid var(--border);font-size:10px}.ranking-row:last-child{border-bottom:0}.ranking-row.me{background:color-mix(in srgb,var(--primary) 6%,var(--card))}.rank-number{text-align:center;font-weight:900}.rank-avatar{width:27px;height:27px;border-radius:50%;background:color-mix(in srgb,var(--primary) 12%,var(--card));color:var(--primary);display:grid;place-items:center;font-weight:900}.rank-name b,.rank-name small{display:block}.rank-name small{color:var(--muted);font-size:8px}.ranking-row>strong{font-size:10px}.dashboard-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}.stat-mini{padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:var(--card);display:grid;grid-template-columns:38px 1fr;column-gap:9px;align-items:center}.stat-mini>span{grid-row:1/3;width:31px;height:31px;border-radius:9px;background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary);display:grid;place-items:center}.stat-mini b{font-size:17px;line-height:1}.stat-mini small{font-size:8px;color:var(--muted)}
/* CMS */
.side{max-height:calc(100vh - 110px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--primary) 55%,var(--border)) transparent}.side::-webkit-scrollbar,.cms-table-scroll::-webkit-scrollbar{width:7px;height:7px}.side::-webkit-scrollbar-thumb,.cms-table-scroll::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--primary) 45%,var(--border));border-radius:99px}.cms-table-scroll{max-height:430px;overflow:auto;border:1px solid var(--border);border-radius:12px}.cms-table-scroll .table{min-width:780px}.cms-table-scroll thead th{position:sticky;top:0;z-index:2;background:var(--card);box-shadow:0 1px 0 var(--border)}.cms-list-foot{padding:9px 2px 0;color:var(--muted);font-size:11px}.cms-section-heading{display:flex;justify-content:space-between;gap:20px;margin-bottom:14px}.cms-section-heading h2{margin:0;font-size:18px}.cms-section-heading p{margin:4px 0 0;color:var(--muted);font-size:12px}.setting-field{display:block}.setting-label{display:block;font-weight:800;margin-bottom:6px;color:var(--label)}.field-help{display:block;font-size:11px;line-height:1.45;margin-top:5px;color:var(--muted)}.color-row{display:grid;grid-template-columns:48px 1fr;gap:8px}.color-picker{padding:3px!important;height:44px;width:48px}.settings-panel{margin-bottom:16px}.settings-panel .form-grid-2{align-items:start}.qr-preview{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.cms-upload-tip{display:flex;gap:12px;align-items:flex-start;padding:13px 15px;margin:12px 0;border-radius:14px;background:color-mix(in srgb,var(--primary) 7%,var(--card));border:1px solid color-mix(in srgb,var(--primary) 17%,var(--border));color:var(--body-text)}.cms-upload-tip>i{font-size:20px;color:var(--primary);margin-top:2px}.cms-upload-tip p{margin:4px 0 0;color:var(--muted);font-size:12px}.cms-page .page-head p{max-width:900px}.admin-nav-title{text-transform:none;letter-spacing:0;font-size:11px}.side a span:first-child{width:21px;text-align:center;color:var(--primary)}
@media(max-width:900px){.dashboard-top,.dashboard-content{grid-template-columns:1fr}.dashboard-stats{grid-template-columns:1fr 1fr}.counter-grid{grid-template-columns:1fr 1fr}.counter-grid>div:nth-child(2):after{display:none}.hero-home{padding-top:48px}.feature-grid-home{grid-template-columns:1fr 1fr}.hero-visual{min-height:350px}}
@media(max-width:650px){.dashboard-heading{align-items:flex-start;flex-direction:column}.dashboard-heading h1{font-size:28px}.xp-hero{padding:17px;gap:11px}.xp-fire{width:43px;height:43px;font-size:19px}.xp-main>strong{font-size:26px}.streak-box{min-width:64px}.dashboard-stats{grid-template-columns:1fr 1fr}.counter-grid{grid-template-columns:1fr 1fr;gap:28px 10px}.counter-grid>div:after{display:none!important}.counter-grid b{font-size:30px}.feature-grid-home{grid-template-columns:1fr}.hero-dashboard-card{width:92%;padding:22px}.floating-chip{right:0}.floating-done{left:0}.hero-trust{gap:9px;font-size:10px}.ticker-track{animation-duration:22s}.cms-table-scroll{max-height:360px}.side{max-height:310px}.form-grid-2{grid-template-columns:1fr}}

/* V5.4 responsive system: chống tràn, chữ không mất, menu điện thoại đầy đủ */
html,body{max-width:100%;overflow-x:hidden}img,video,iframe{max-width:100%}.wrap{width:100%}.card,.panel,.video,.feature-card,.hero-card,.stat,.price,.option{min-width:0}h1,h2,h3,h4,h5,h6,p,span,a,small,b,strong,label,td,th{overflow-wrap:anywhere}.table{min-width:0}.nav{position:sticky;top:0}.mobile-menu-panel{display:none}.video-thumb{background-size:cover;background-position:center;position:relative;aspect-ratio:16/9;background-color:#08111e;display:grid;place-items:center}.video-thumb span{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:rgba(0,0,0,.62);color:#fff;font-size:20px}.youtube-video{background:#050b13 center/cover no-repeat var(--video-poster)}
@media(max-width:1000px){
 .nav-in{gap:12px}.desktop-links{display:none!important}.nav-right{margin-left:auto}.desktop-extra{display:none!important}.admin-link{display:none}.hamb{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--border);background:var(--card);color:var(--body-text);border-radius:12px;font-size:21px;cursor:pointer;flex:none}.mobile-menu-open{overflow:hidden}.mobile-menu-open .mobile-menu-panel{display:block;position:absolute;left:10px;right:10px;top:calc(100% + 8px);background:var(--card);border:1px solid var(--border);border-radius:18px;padding:12px;box-shadow:0 20px 45px rgba(0,0,0,.16);max-height:calc(100vh - 80px);overflow:auto}.mobile-menu-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.mobile-menu-grid a{display:flex;align-items:center;gap:10px;padding:13px 12px;border:1px solid var(--border);border-radius:13px;color:var(--body-text)!important;background:color-mix(in srgb,var(--primary) 4%,var(--card));font-weight:700;min-width:0}.mobile-menu-grid a i{width:24px;text-align:center;color:var(--primary);flex:none}.mobile-menu-grid a:hover{background:color-mix(in srgb,var(--primary) 10%,var(--card))}.brand{min-width:0}.brand strong{white-space:nowrap}.nav-right .theme-toggle{flex:none}
}
@media(max-width:650px){
 .wrap{padding-left:13px;padding-right:13px}.nav{height:58px}.nav-in{min-height:58px}.brand b{width:30px;height:30px}.brand strong{font-size:12px}.brand small{font-size:6px}.theme-toggle{width:38px!important;height:38px!important}.mobile-menu-grid{grid-template-columns:1fr}.mobile-menu-grid a{font-size:14px;padding:12px}.page{padding-top:18px}.page-head h1,.hero h1{font-size:clamp(25px,8vw,34px);line-height:1.12}.hero p,.page-head p{font-size:14px}.btn{max-width:100%;white-space:normal;text-align:center}.actions{flex-wrap:wrap}.actions .btn{flex:1 1 150px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}.video-watch-layout{grid-template-columns:minmax(0,1fr);gap:12px}.video-stage{border-radius:14px}.video-info{padding:14px;border-radius:14px}.video-info h1{font-size:23px}.video-playlist{padding:10px;border-radius:14px}.playlist-item{grid-template-columns:30px minmax(0,1fr) 14px;padding:9px}.playlist-item b{font-size:12px}.embed-video{width:100%;aspect-ratio:16/9}.embed-video iframe{width:100%;height:100%}.video-empty{height:230px}.kpi-grid,.dashboard-stats,.counter-grid{grid-template-columns:1fr 1fr}.form-grid-2,.form-grid-3{grid-template-columns:1fr}.table th,.table td{padding:9px 8px;font-size:11px}.cms-table-scroll{max-width:100%;overflow:auto}.side{max-height:260px}.footer{padding-left:13px;padding-right:13px}.listen-image-placeholder{height:auto;min-height:230px}.listen-image-wrap img{width:100%;height:auto;max-height:none;object-fit:contain}
}
@media(max-width:390px){.kpi-grid,.dashboard-stats,.counter-grid{grid-template-columns:1fr}.brand small{display:none}.nav-in{gap:7px}.mobile-menu-grid a{padding:11px}.mobile-menu-panel{left:7px;right:7px}}
/* Đồng bộ màu theo biến chủ đề ở mọi chế độ */
body{color:var(--body-text);background:var(--bg)}.nav,.card,.panel,.video,.feature-card,.hero-card,.stat,.price,.option{color:var(--body-text);background-color:var(--card);border-color:var(--border)}.muted,.field-help,.page-head p{color:var(--muted)}input,select,textarea{background:var(--card)!important;color:var(--input-text)!important;border-color:var(--border)!important}.table th{color:var(--table-text)!important;background:color-mix(in srgb,var(--primary) 8%,var(--card))}.table td{color:var(--table-text)!important;border-color:var(--border)!important}label{color:var(--label)}

/* Thư viện video V5.4 */
.video-library-hero{padding:28px}.video-library-hero h1{margin:12px 0 7px}.video-library-hero p{max-width:820px;color:var(--muted);margin:0}.video-library-grid{align-items:stretch}.video-card-modern{overflow:hidden;display:flex;flex-direction:column}.video-card-modern .thumb{border-radius:18px 18px 0 0}.video-card-modern .video-body{flex:1;display:flex;flex-direction:column}.video-card-modern .video-body p{color:var(--muted)}.video-card-actions{margin-top:auto;padding-top:13px}.video-source-badge{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.72);color:#fff!important;padding:5px 8px;border-radius:999px;font-size:10px!important;font-weight:800}.video-thumb span{transition:.2s}.video-thumb:hover span{transform:scale(1.08)}
.access-plan-box{padding:18px;border:1px solid var(--border);border-radius:16px;background:color-mix(in srgb,var(--primary) 3%,var(--card));margin-top:8px}.access-plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:10px}.access-plan-option{display:flex!important;gap:10px;align-items:flex-start;padding:13px;border:1px solid var(--border);border-radius:14px;background:var(--card);cursor:pointer}.access-plan-option input{width:auto!important;margin-top:4px}.access-plan-option b{display:block}.access-plan-option small{display:block;color:var(--muted);margin-top:3px}.content-list-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:18px}.content-admin-card{padding:20px;border:1px solid var(--border);border-radius:18px;background:var(--card)}.content-actions{display:flex;gap:8px;flex-wrap:wrap}.badge-free{background:color-mix(in srgb,var(--success) 12%,var(--card));color:var(--success)}@media(max-width:760px){.access-plan-grid{grid-template-columns:1fr}}

/* V14 Theme Engine: mọi thành phần dùng token màu quản trị, tương thích Light/Dark */
:root{
  --cyan:var(--primary);--cyan2:var(--primary2);--orange:var(--accent);--ink:var(--text);--line:var(--border);--white:var(--card);--green:var(--success);
  --surface:var(--card);
}
html{color-scheme:light}html[data-theme="dark"]{color-scheme:dark}
body{background:radial-gradient(circle at 10% 0%,color-mix(in srgb,var(--primary) 10%,transparent),transparent 28%),radial-gradient(circle at 90% 10%,color-mix(in srgb,var(--accent) 8%,transparent),transparent 24%),linear-gradient(180deg,var(--bg),var(--surface-alt));color:var(--body-text)}
a{color:inherit}.nav{background:color-mix(in srgb,var(--card) 92%,transparent);border-color:var(--border);color:var(--nav-text)}
.brand b{background:var(--primary);color:var(--on-primary);box-shadow:0 5px 12px color-mix(in srgb,var(--primary) 28%,transparent)}.brand b span{color:var(--accent)}.brand small{color:var(--muted)}
.links>a{color:var(--nav-text)}.links>a:hover{background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary)}
.pill-vocab,.pill-video{background:linear-gradient(90deg,var(--primary),var(--accent))!important;color:var(--on-primary)!important}.pro{background:var(--primary);color:var(--on-primary)!important}
.userchip{border-color:var(--border)}.userchip i{background:var(--primary);color:var(--on-primary)}.darkbtn{background:var(--inverse-bg,var(--text));color:var(--inverse-text,var(--card))}
.eyebrow{color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,var(--card))}.hero h1 span{color:var(--primary)}.btn{background:var(--card);color:var(--body-text);border-color:var(--border)}.btn-primary{background:var(--primary);color:var(--on-primary);border-color:var(--primary);box-shadow:0 8px 18px color-mix(in srgb,var(--primary) 20%,transparent)}.btn-orange{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.hero-card,.card,.feature-card,.topic,.question-card,.vocab-card,.stat,.panel,.list-item,.level-card,.video,.post,.price,.form,.option{background:var(--card);color:var(--body-text);border-color:var(--border)}
.mini b,.feature-card span,.rank-cta{color:var(--primary)}.progress,.bar{background:var(--surface-alt)}.progress i,.bar i{background:linear-gradient(90deg,var(--primary),var(--success))}.mini-grid div{background:var(--surface-alt)}.section.muted{background:var(--surface-alt)}
.tab{background:var(--card);color:var(--body-text);border-color:var(--border)}.tab.active{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}.tag{background:color-mix(in srgb,var(--info) 12%,var(--card));color:var(--info)}.option:hover{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 7%,var(--card))}.letter{background:var(--surface-alt);color:var(--body-text)}.answer{background:color-mix(in srgb,var(--success) 12%,var(--card));border-color:var(--success);color:var(--success-dark)}
.topic-grid .topic,.level-card{box-shadow:none}.thumb{background:linear-gradient(135deg,var(--primary2),var(--primary));color:var(--on-primary)}.price.featured{border-color:var(--primary)}
.table th{background:color-mix(in srgb,var(--primary) 8%,var(--card));color:var(--table-text);border-color:var(--border)}.table td{color:var(--table-text);border-color:var(--border)}
input,select,textarea{background:var(--input-bg)!important;color:var(--input-text)!important;border-color:var(--border)!important}.notice{background:color-mix(in srgb,var(--warning) 10%,var(--card));border-color:color-mix(in srgb,var(--warning) 30%,var(--border));color:var(--warning-dark)}
.footer{background:var(--card);color:var(--footer-text);border-top-color:var(--border)}.footer a{color:var(--muted)}.footer a:hover{color:var(--primary)}
.exam{background:var(--inverse-bg,var(--bg));color:var(--inverse-text,var(--body-text))}.exam-q{background:color-mix(in srgb,var(--inverse-text,var(--body-text)) 5%,var(--inverse-bg,var(--bg)));border-color:var(--border)}.exam .option{background:color-mix(in srgb,var(--inverse-text,var(--body-text)) 4%,var(--inverse-bg,var(--bg)));color:var(--inverse-text,var(--body-text));border-color:var(--border)}
.side{background:var(--card);border-color:var(--border)}.side a{color:var(--nav-text)}.side a:hover,.side a.active{background:color-mix(in srgb,var(--primary) 10%,var(--card));color:var(--primary)}
html[data-theme="dark"] .section.muted{background:var(--surface-alt)}html[data-theme="dark"] .mini-grid div{background:var(--surface-alt)}html[data-theme="dark"] .btn:not(.btn-primary):not(.btn-orange):not(.pro){background:var(--card);color:var(--body-text);border-color:var(--border)}html[data-theme="dark"] .theme-toggle{background:var(--card);color:var(--body-text);border-color:var(--border)}
/* Ép các heading/label/table dùng token, tránh màu cố định làm mất chữ ở Dark Mode */
h1{color:var(--h1)}h2{color:var(--h2)}h3{color:var(--h3)}h4{color:var(--h4)}h5{color:var(--h5)}h6{color:var(--h6)}label{color:var(--label)}.table th,.table td{color:var(--table-text)}
/* Các icon/nhãn semantic cũ dùng màu cố định được đưa về bảng màu quản trị */
.fa-solid,.fa-regular,.fa-brands{color:inherit}.badge-green{color:var(--success)!important;background:color-mix(in srgb,var(--success) 12%,var(--card));border-color:color-mix(in srgb,var(--success) 22%,var(--border))}
/* Scrollbar cũng theo màu được cấu hình */
*{scrollbar-color:color-mix(in srgb,var(--primary) 50%,var(--border)) var(--card)}
*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-track{background:var(--card)}*::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--primary) 50%,var(--border));border-radius:99px}*::-webkit-scrollbar-thumb:hover{background:var(--primary)}