/* Thạo Năng Lực (TNL) · giao diện chương trình, trang kỹ năng, bài làm, tiến bộ, người chấm. Dùng token của style.css. */
.tnl{--tnl-soft:#F2F4F7;--tnl-ok:#1B7F4B;--tnl-ok-bg:#E8F6EE;--tnl-warn:#8A5A00;--tnl-warn-bg:#FFF4D6;--tnl-bad:#B3261E;--tnl-bad-bg:#FDECEA;--tnl-info-bg:#EEF2FF}
.tnl .wrap{max-width:1180px}
.tnl *{min-width:0}
.tnl p,.tnl li,.tnl h1,.tnl h2,.tnl h3,.tnl pre,.tnl td{overflow-wrap:anywhere}
.tnl-hero{background:var(--tnl-soft);border-bottom:1px solid var(--line)}
.tnl-hero-in{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;align-items:center;padding:34px 0 30px}
.tnl-kicker{margin:0 0 8px;font-size:14px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-deep)}
.tnl-hero h1{max-width:18ch}
.tnl-lead{font-size:19px;max-width:52ch;margin:0 0 6px}
.tnl-free{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--hi);color:var(--ink);font-weight:700;font-size:15px}
.tnl-note{margin:10px 0 0;font-size:15px;color:var(--muted)}
.tnl-trial{margin:14px 0 0;font-size:14px;color:var(--muted);max-width:60ch}
.tnl .btn{margin-top:14px}
.tnl-thao{margin:0;display:flex;flex-direction:column;align-items:center;gap:6px;justify-self:center}
.tnl-thao-btn{position:relative;width:180px;height:180px;border:0;padding:0;background:transparent;cursor:pointer;border-radius:50%}
.tnl-thao-btn img{width:100%;height:100%;object-fit:contain;transition:transform 360ms ease}
.tnl-thao-btn canvas{position:absolute;inset:0;width:100%!important;height:100%!important}
.tnl-thao-btn.is-3d img{visibility:hidden}
.tnl-thao-btn:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.tnl-thao-cap{margin:0;min-height:1.6em;font-size:15px;color:var(--ink);text-align:center;max-width:28ch}
.tnl-thao[data-state=bat-dau] img{animation:tnl-chao 1.5s ease 1}
.tnl-thao[data-state=gap-kho] img{animation:tnl-nghieng 1s ease 1}
.tnl-thao[data-state=phat-hien-loi] img{animation:tnl-gat 1.3s ease 1}
.tnl-thao[data-state=dung-buoc] img{animation:tnl-nay .8s ease 1}
.tnl-thao[data-state=hoan-thanh] img{animation:tnl-vui 1.8s ease 1}
.tnl-thao[data-state=chua-dat] img{animation:tnl-nhin-lai 1.3s ease 1}
.tnl-thao[data-state=tap-trung] img{transform:rotate(-2deg) scale(.98)}
.tnl-thao-nho .tnl-thao-btn{width:96px;height:96px}
@keyframes tnl-chao{0%{transform:rotate(0)}30%{transform:rotate(-7deg) translateY(-4px)}60%{transform:rotate(5deg)}100%{transform:rotate(0)}}
@keyframes tnl-nghieng{0%{transform:rotate(0)}50%{transform:rotate(8deg)}100%{transform:rotate(0)}}
@keyframes tnl-gat{0%{transform:translateY(0)}35%{transform:translateY(0) rotate(-3deg)}65%{transform:translateY(5px) rotate(0)}100%{transform:translateY(0)}}
@keyframes tnl-nay{0%{transform:translateY(0)}40%{transform:translateY(-8px)}100%{transform:translateY(0)}}
@keyframes tnl-vui{0%{transform:scale(1)}25%{transform:scale(1.06) rotate(-4deg)}50%{transform:scale(1.02) rotate(4deg)}75%{transform:scale(1.05) rotate(-2deg)}100%{transform:scale(1)}}
@keyframes tnl-nhin-lai{0%{transform:rotate(0)}40%{transform:rotate(-6deg) translateY(3px)}100%{transform:rotate(0)}}
@media (prefers-reduced-motion:reduce){.tnl-thao img{animation:none!important;transition:none!important;transform:none!important}}
.tnl-sec{padding:26px 0 8px}
.tnl-sec h2{max-width:none}
.tnl-sub{color:var(--muted);margin:0 0 14px;max-width:70ch}
.tnl-roles{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(240px,100%),1fr));gap:12px;margin:0;padding:0;list-style:none}
.tnl-role{border:1px solid var(--line);background:#fff;padding:14px 16px;display:flex;flex-direction:column;gap:6px}
.tnl-role b{font-size:16px}
.tnl-role p{margin:0;font-size:15px;color:var(--muted)}
.tnl-role a{font-weight:700;font-size:15px}
.tnl-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(170px,100%),1fr));gap:10px;margin:0;padding:0;list-style:none;counter-reset:b}
.tnl-steps li{border:1px solid var(--line);padding:12px 14px;font-size:15px;background:#fff;counter-increment:b}
.tnl-steps li::before{content:counter(b);display:inline-block;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;text-align:center;line-height:26px;margin-bottom:6px}
.tnl-tools{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0 0 14px}
.tnl-tools input[type=search]{flex:1 1 260px;min-width:0;padding:11px 12px;border:1px solid var(--line);border-radius:var(--rb);font:inherit}
.tnl-chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px;padding:0;list-style:none}
.tnl-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;font:600 14px var(--body);cursor:pointer;color:var(--ink)}
.tnl-chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.tnl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(250px,100%),1fr));gap:12px;margin:0;padding:0;list-style:none}
.tnl-card{border:1px solid var(--line);background:#fff;padding:14px 16px 12px;display:flex;flex-direction:column;gap:6px;position:relative;min-width:0;overflow-wrap:anywhere}
.tnl-card[hidden]{display:none}
.tnl-card .tnl-g{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.02em}
.tnl-card h3{margin:0;font-size:17px;line-height:1.35}
.tnl-card h3 a{text-decoration:none;color:inherit}
.tnl-card h3 a::after{content:"";position:absolute;inset:0}
.tnl-card .tnl-out{margin:0;font-size:14px;color:var(--muted)}
.tnl-card .tnl-st{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:14px}
.tnl-badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:13px;font-weight:700;background:var(--tnl-soft);color:var(--ink)}
.tnl-badge.ok{background:var(--tnl-ok-bg);color:var(--tnl-ok)}
.tnl-badge.warn{background:var(--tnl-warn-bg);color:var(--tnl-warn)}
.tnl-badge.bad{background:var(--tnl-bad-bg);color:var(--tnl-bad)}
.tnl-badge.info{background:var(--tnl-info-bg);color:var(--accent-deep)}
.tnl-badge.free{background:var(--hi);color:var(--ink)}
.tnl-empty{padding:18px;border:1px dashed var(--line);color:var(--muted)}
.tnl-faq details{border-top:1px solid var(--line);padding:10px 0}
.tnl-faq summary{cursor:pointer;font-weight:700}
.tnl-faq p{margin:8px 0 0;color:var(--ink)}
/* Trang kỹ năng */
.tnl-top{background:var(--tnl-soft);border-bottom:1px solid var(--line)}
.tnl-top-in{padding:22px 0 18px}
.tnl-crumbs{margin:0 0 8px;font-size:14px;color:var(--muted)}
.tnl-crumbs a{color:inherit}
.tnl-top h1{font-size:clamp(24px,2.6vw,34px);max-width:30ch}
.tnl-meta{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0;align-items:center}
.tnl-two{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;align-items:start;padding-top:16px}
.tnl-main>section{margin-bottom:22px}
.tnl-box{border:1px solid var(--line);background:#fff;padding:16px 18px}
.tnl-box h2,.tnl-box h3{margin-top:0}
.tnl-box h3{font-size:17px;margin-bottom:8px}
.tnl-pre{white-space:pre-wrap;word-break:break-word;font:15px/1.55 var(--body);background:var(--tnl-soft);padding:12px 14px;border:1px solid var(--line);margin:0;max-height:420px;overflow:auto}
.tnl-files{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0;padding:0;list-style:none}
.tnl-files a,.tnl-files button{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border:1px solid var(--line);background:#fff;font:600 14px var(--body);color:var(--ink);text-decoration:none;cursor:pointer}
.tnl-side{position:sticky;top:12px;display:flex;flex-direction:column;gap:14px}
.tnl-chat{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;max-height:70vh}
.tnl-chat-h{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--tnl-soft)}
.tnl-chat-h b{font-size:15px}
.tnl-chat-h small{display:block;font-size:13px;color:var(--muted)}
.tnl-chat-log{flex:1;min-height:160px;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:10px}
.tnl-msg{max-width:92%;padding:9px 12px;font-size:15px;line-height:1.5;white-space:pre-wrap;word-break:break-word}
.tnl-msg.u{align-self:flex-end;background:var(--tnl-info-bg)}
.tnl-msg.a{align-self:flex-start;background:var(--tnl-soft);border:1px solid var(--line)}
.tnl-msg.s{align-self:center;font-size:13px;color:var(--muted);background:none}
.tnl-chat-f{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.tnl-chat-f textarea{flex:1;min-height:44px;max-height:120px;padding:9px 10px;border:1px solid var(--line);border-radius:var(--rb);font:15px var(--body);resize:vertical}
.tnl-chat-f button{align-self:flex-end}
.tnl-quick{display:flex;flex-wrap:wrap;gap:6px;padding:0 10px 10px}
.tnl-quick button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 10px;font:600 13px var(--body);cursor:pointer}
.tnl-tabs{display:none;gap:6px;margin:0 0 12px;padding:0;list-style:none}
.tnl-tabs button{flex:1;padding:10px 6px;border:1px solid var(--line);background:#fff;font:700 14px var(--body);cursor:pointer}
.tnl-tabs button[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.tnl-field{margin:0 0 14px}
.tnl-field label,.tnl-field .tnl-lb{display:block;font-weight:700;font-size:15px;margin:0 0 6px}
.tnl-field .tnl-help{display:block;font-weight:400;font-size:14px;color:var(--muted);margin-top:2px}
.tnl-field textarea,.tnl-field input[type=text]{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line);border-radius:var(--rb);font:15px/1.55 var(--body);min-height:48px;resize:vertical}
.tnl-field textarea.tnl-big{min-height:260px}
.tnl-field textarea:focus,.tnl-field input:focus{outline:3px solid var(--accent);outline-offset:1px}
.tnl-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tnl-actions .btn{margin-top:0}
.tnl-btn-2{display:inline-flex;align-items:center;gap:8px;padding:11px 16px;border:1.5px solid var(--ink);background:#fff;color:var(--ink);font:700 15px var(--body);cursor:pointer;text-decoration:none;border-radius:var(--rb)}
.tnl-btn-2:disabled,.btn:disabled{opacity:.55;cursor:not-allowed}
.tnl-status{font-size:14px;color:var(--muted);margin:0}
.tnl-status.ok{color:var(--tnl-ok)}
.tnl-status.bad{color:var(--tnl-bad)}
.tnl-alert{padding:12px 14px;border:1px solid var(--line);background:var(--tnl-warn-bg);font-size:15px;margin:0 0 14px}
.tnl-alert.bad{background:var(--tnl-bad-bg)}
.tnl-alert.ok{background:var(--tnl-ok-bg)}
.tnl-alert.info{background:var(--tnl-info-bg)}
.tnl-upload{border:1px dashed var(--line);padding:12px 14px;margin:0 0 12px;background:#fff}
.tnl-upload .tnl-lb{margin-bottom:4px}
.tnl-upload-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}
.tnl-upload input[type=file]{font-size:14px;max-width:100%}
.tnl-upload .tnl-fname{font-size:14px;color:var(--ink);word-break:break-all}
.tnl-upload .tnl-fdel{border:0;background:none;color:var(--tnl-bad);font-weight:700;cursor:pointer;font-size:14px}
.tnl-check{list-style:none;padding:0;margin:0 0 12px}
.tnl-check li{display:flex;gap:8px;align-items:flex-start;padding:5px 0;font-size:15px}
.tnl-check li::before{content:"";width:18px;height:18px;flex:none;border:2px solid var(--line);border-radius:4px;margin-top:3px}
.tnl-check li.ok::before{background:var(--tnl-ok);border-color:var(--tnl-ok)}
.tnl-check li.bad::before{border-color:var(--tnl-bad)}
.tnl-result{border:2px solid var(--ink);padding:18px 20px;background:#fff;margin:0 0 18px}
.tnl-result-h{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.tnl-score{font:700 34px/1 var(--display)}
.tnl-score small{font-size:16px;color:var(--muted);font-weight:400}
.tnl-crit{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:8px}
.tnl-crit li{border:1px solid var(--line);padding:10px 12px}
.tnl-crit .tnl-crit-h{display:flex;justify-content:space-between;gap:8px;font-weight:700;font-size:15px}
.tnl-crit .tnl-bar{height:6px;background:var(--tnl-soft);margin:6px 0}
.tnl-crit .tnl-bar i{display:block;height:100%;background:var(--accent)}
.tnl-crit p{margin:4px 0 0;font-size:14px;color:var(--ink)}
.tnl-crit .tnl-ev{font-size:13px;color:var(--muted);margin:4px 0 0}
.tnl-fb h3{font-size:16px;margin:14px 0 6px}
.tnl-fb ul{margin:0;padding-left:20px;font-size:15px}
.tnl-flags{margin:10px 0 0;font-size:14px;color:var(--tnl-bad)}
.tnl-hist{font-size:14px;color:var(--muted);margin:12px 0 0}
.tnl-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.tnl-list li{border:1px solid var(--line);background:#fff;padding:12px 14px;display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;justify-content:space-between}
.tnl-list li b{font-size:15px}
.tnl-list li .tnl-sub{margin:0;font-size:14px;flex-basis:100%}
.tnl-prog{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:10px;margin:0;padding:0;list-style:none}
.tnl-prog li{border:1px solid var(--line);background:#fff;padding:12px 14px}
.tnl-prog b{display:block;font-size:14px;margin-bottom:6px}
.tnl-dots{display:flex;flex-wrap:wrap;gap:4px}
.tnl-dot{width:22px;height:22px;border-radius:4px;background:var(--tnl-soft);border:1px solid var(--line);font-size:11px;display:grid;place-items:center;color:var(--muted);text-decoration:none}
.tnl-dot.l{background:var(--tnl-info-bg);border-color:#8FA1FF;color:var(--accent-deep)}
.tnl-dot.n{background:var(--tnl-warn-bg);border-color:#E6C25A;color:var(--tnl-warn)}
.tnl-dot.d{background:var(--tnl-ok);border-color:var(--tnl-ok);color:#fff}
.tnl-dot.c{background:var(--tnl-bad-bg);border-color:#E4A39F;color:var(--tnl-bad)}
.tnl-legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted);margin:8px 0 0}
.tnl-legend span{display:inline-flex;align-items:center;gap:5px}
.tnl-tool{background:var(--tnl-info-bg);border:1px solid #C9D2FF;padding:14px 16px}
.tnl-tool p{margin:6px 0 0;font-size:15px}
.tnl-sim{border:1px solid var(--line);padding:12px 14px;background:#fff;margin:0 0 14px}
.tnl-sim textarea{width:100%;box-sizing:border-box;min-height:90px;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;padding:8px;border:1px solid var(--line)}
.tnl-sim-out{font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:pre-wrap;background:var(--tnl-soft);padding:8px;max-height:220px;overflow:auto;margin:8px 0 0;border:1px solid var(--line)}
.tnl-rv-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}
.tnl-rv-key{background:var(--tnl-warn-bg);border:1px solid #E6C25A;padding:12px 14px;font-size:14px}
.tnl-rv-score{display:grid;grid-template-columns:1fr 70px;gap:8px;align-items:center;margin:0 0 8px}
.tnl-rv-score input{padding:6px;border:1px solid var(--line);font:15px var(--body)}
.tnl-media{max-width:100%;max-height:360px;display:block;margin:6px 0;border:1px solid var(--line)}
.tnl-noscript{padding:14px;border:1px solid var(--line);background:var(--tnl-warn-bg)}
.tnl-small{font-size:14px;color:var(--muted)}
.tnl-section-id{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.02em}
@media (max-width:900px){
  .tnl-hero-in{grid-template-columns:1fr;gap:12px;padding:24px 0 22px}
  .tnl-thao{order:-1;justify-self:start}
  .tnl-thao-btn{width:120px;height:120px}
  .tnl-two{grid-template-columns:1fr}
  .tnl-side{position:static}
  .tnl-tabs{display:flex}
  .tnl-pane[data-pane]{display:none}
  .tnl-pane[data-pane].is-on{display:block}
  .tnl-rv-grid{grid-template-columns:1fr}
  .tnl-chat{max-height:none}
  .tnl-chat-log{max-height:300px}
}
@media (min-width:901px){.tnl-pane[data-pane]{display:block}}
@media (max-width:480px){.tnl-field textarea.tnl-big{min-height:200px}.tnl-grid{grid-template-columns:1fr}.tnl-score{font-size:28px}}