:root{--bg: #f6f5f2;--surface: #ffffff;--text: #1a1a1a;--muted: #6b6b6b;--border: #e2e0db;--accent: #e8590c;--accent-text: #ffffff;--accent-soft: #fde8dc;--danger: #c92a2a;--range: rgba(232, 89, 12, .18);--range-active: rgba(232, 89, 12, .4);--radius: 12px;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #0f1115;--surface: #181b21;--text: #ececec;--muted: #9aa0a6;--border: #2a2f37;--accent: #ff7a2f;--accent-text: #141414;--accent-soft: #3a2416;--danger: #ff6b6b;--range: rgba(255, 122, 47, .2);--range-active: rgba(255, 122, 47, .45)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Noto Sans Thai,sans-serif;-webkit-tap-highlight-color:transparent}button,input{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app{max-width:1200px;margin:0 auto;padding:12px 16px calc(32px + env(safe-area-inset-bottom))}.header{display:flex;align-items:center;justify-content:space-between;gap:12px}.logo{margin:0;font-size:1.5rem;letter-spacing:-.02em;color:var(--accent)}.tagline{margin:0;color:var(--muted);font-size:.85rem}.video-form{display:flex;gap:8px;margin:12px 0 4px}.video-form input{flex:1;min-width:0;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.empty{color:var(--muted);text-align:center;padding:32px 0 8px}.samples-title{font-size:1rem;color:var(--text);margin:24px 0 8px}.samples{list-style:none;margin:0 auto;padding:0;display:grid;gap:8px;max-width:520px}.sample{display:flex;align-items:center;gap:12px;width:100%;padding:8px;text-align:left;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.sample:hover{border-color:var(--accent)}.sample img{width:120px;height:auto;aspect-ratio:16 / 9;object-fit:cover;border-radius:8px;flex:none}.sample small{display:block;color:var(--muted);font-size:.8rem;margin-top:2px}.error{color:var(--danger);margin:8px 0}.error a{color:inherit}.hint{color:var(--muted);font-size:.85rem;margin:6px 0}.status{color:var(--accent);font-weight:600;text-align:center;margin:4px 0 0;min-height:1.5em}.layout{display:grid;gap:16px;margin-top:12px}.col-controls{display:grid;gap:12px;align-content:start}.player-frame{position:relative;aspect-ratio:16 / 9;background:#000;border-radius:var(--radius);overflow:hidden}.player-host,.player-host iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.timeline{margin-top:12px;-webkit-user-select:none;user-select:none}.timeline-bar{position:relative;height:44px;background:var(--surface);border:1px solid var(--border);border-radius:8px;touch-action:none;cursor:pointer}.timeline-range{position:absolute;top:0;bottom:0;background:var(--range)}.timeline-range.is-active{background:var(--range-active)}.timeline-handle{position:absolute;top:-4px;bottom:-4px;left:-11px;width:22px;cursor:ew-resize}.timeline-handle:after{content:"";position:absolute;left:9px;top:0;bottom:0;width:4px;border-radius:2px;background:var(--accent)}.timeline-handle.is-end{left:auto;right:-11px}.timeline-playhead{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:var(--text);pointer-events:none}.timeline-times{display:flex;justify-content:space-between;color:var(--muted);font-size:.8rem;font-variant-numeric:tabular-nums}.transport{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:8px}.btn-play,.btn-round{display:inline-grid;place-items:center;border-radius:999px;border:1px solid var(--border);background:var(--surface)}.btn-round{width:52px;height:52px;font-size:1.1rem}.btn-play{width:72px;height:72px;font-size:1.6rem;background:var(--accent);color:var(--accent-text);border:0}.btn-ab{font-weight:700}.btn-primary,.btn-secondary,.btn-set{padding:12px 18px;border-radius:var(--radius);border:1px solid transparent;font-weight:600;white-space:nowrap}.btn-primary{background:var(--accent);color:var(--accent-text)}.btn-secondary,.btn-set{background:var(--surface);border-color:var(--border)}.btn-set{padding:8px 12px}.btn-small{min-width:44px;min-height:40px;padding:4px 8px;border-radius:8px;border:1px solid var(--border);background:var(--surface);font-variant-numeric:tabular-nums}.btn-text{background:none;border:0;padding:8px;color:var(--muted);text-decoration:underline}.danger{color:var(--danger)}.hint.ok{color:var(--accent)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.panel h2{margin:0 0 8px;font-size:1rem;display:flex;justify-content:space-between;align-items:baseline}.value{color:var(--accent);font-variant-numeric:tabular-nums}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-flex;flex-direction:column;align-items:center;min-height:40px;padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:var(--bg);line-height:1.2}.chip small{color:var(--muted);font-size:.72rem;font-variant-numeric:tabular-nums}.chip.is-on{background:var(--accent-soft);border-color:var(--accent)}.chip.is-ghost{border-style:dashed;background:transparent}.section-editor{display:grid;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}.section-name{padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg)}.edge-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.edge-label{font-weight:700;width:1.2em}.edge-time{min-width:4.5em;text-align:center;font-variant-numeric:tabular-nums;font-weight:600}.edge-row .btn-set{margin-left:auto}.trainer-row{display:flex;align-items:center;gap:6px;margin-top:6px}.trainer-row>span{width:5.5em;font-size:.85rem;color:var(--muted)}.stepper{display:flex;align-items:center;gap:12px}.stepper input[type=range]{flex:1;accent-color:var(--accent);min-height:44px}.stepper+.chips{margin-top:10px}.field{display:grid;gap:6px;margin-top:8px}.field>span,.field>label{font-size:.85rem;color:var(--muted)}.bpm-row{display:flex;gap:8px}.bpm-row input{width:6em;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--bg)}.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.shortcuts{display:none}.library{list-style:none;margin:0;padding:0;display:grid;gap:8px}.library li{display:flex;align-items:center;gap:10px}.library img{border-radius:6px;object-fit:cover;flex:none}.library-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app>.panel{margin-top:16px}.footer{display:flex;justify-content:center;gap:16px;margin-top:32px;font-size:.85rem}.footer a{color:var(--muted)}.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translate(-50%);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:999px;font-weight:600}@media (min-width: 900px){.layout{grid-template-columns:minmax(0,3fr) minmax(320px,2fr);align-items:start}.col-player{position:sticky;top:12px}.shortcuts{display:block}}