*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #121212;--surface: #1f1f1f;--text: #ffffff;--text-muted: #888888;--accent: #fe2c55;--accent-hover: #e0193f;--border: #2a2a2a;--radius: 12px}body{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column;overflow:hidden;overscroll-behavior:none}.screen{display:none}body[data-screen=upload] .screen-upload,body[data-screen=player] .screen-player,body[data-screen=end] .screen-end{display:flex}.btn-primary{width:100%;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);padding:14px;font-size:1rem;font-weight:700;cursor:pointer;transition:background .15s}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{width:100%;background:none;color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius);padding:13px;font-size:.9rem;cursor:pointer;transition:color .15s,border-color .15s}.btn-secondary:hover{color:var(--accent);border-color:var(--accent)}.btn-ghost{background:none;border:1px solid var(--border);color:var(--text-muted);border-radius:8px;padding:6px 12px;font-size:.78rem;cursor:pointer;transition:color .15s,border-color .15s}.btn-ghost:hover,.btn-ghost.active{color:var(--accent);border-color:var(--accent)}.screen-upload{flex:1;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:16px}.app-title{font-size:1.5rem;font-weight:700;letter-spacing:-.5px}.accent-tiktok{color:#fff}.accent-shuffle{color:var(--accent)}.session-banner{display:none;flex-direction:column;align-items:center;gap:10px;width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center}.session-banner.visible{display:flex}.session-progress{width:100%;height:4px;background:var(--border);border-radius:2px;overflow:hidden}.session-progress-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .3s ease}.session-banner-stats{font-size:.9rem;color:var(--text-muted)}.session-banner-divider{font-size:.75rem;color:var(--text-muted)}.session-banner .btn-primary{width:100%}.drop-zone{width:100%;max-width:420px;border:2px dashed var(--border);border-radius:var(--radius);padding:48px 32px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;background:var(--surface);-webkit-user-select:none;user-select:none}.drop-zone:hover,.drop-zone.drag-active{border-color:var(--accent);background:#2a1218}.drop-icon{font-size:2.5rem;margin-bottom:12px}.drop-label{font-size:1rem;font-weight:600;margin-bottom:6px}.drop-sub{font-size:.8rem;color:var(--text-muted)}.demo-divider{color:var(--text-muted);font-size:.78rem}.btn-demo{background:none;border:1px solid var(--border);color:var(--text-muted);border-radius:var(--radius);padding:10px 28px;font-size:.9rem;cursor:pointer;transition:color .15s,border-color .15s}.btn-demo:hover{color:var(--accent);border-color:var(--accent)}.how-to{max-width:420px;font-size:.78rem;color:var(--text-muted);line-height:1.6;text-align:center}.how-to strong{color:var(--text)}.how-to a{color:var(--accent);text-decoration:none}.how-to a:hover{text-decoration:underline}.error-msg{max-width:420px;width:100%;background:#3a0d16;border:1px solid #7a1a2a;color:#ff8096;border-radius:var(--radius);padding:12px 16px;font-size:.85rem;display:none}.error-msg.visible{display:block}@media(max-width:480px){.drop-zone{padding:36px 20px}.drop-sub:before{content:"Tap to browse"}.drop-sub{font-size:0}.drop-sub:before{font-size:.8rem;color:var(--text-muted)}}.screen-player{flex-direction:column;height:100svh;overflow:hidden}.player-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--surface);flex-wrap:wrap;gap:8px}.player-header .logo{font-size:1rem;font-weight:700;cursor:pointer;-webkit-user-select:none;user-select:none}.play-mode-group{display:flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}.play-mode-btn{background:none;border:none;border-right:1px solid var(--border);color:var(--text-muted);padding:6px 11px;font-size:.78rem;font-family:inherit;cursor:pointer;transition:background .15s,color .15s;white-space:nowrap}.play-mode-btn:last-child{border-right:none}.play-mode-btn:hover{color:var(--text);background:var(--border)}.play-mode-btn.active{background:var(--accent);color:#fff;font-weight:600}.play-mode-btn.active:hover{background:var(--accent-hover)}.header-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.player-body{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;padding:12px 16px 16px;gap:10px;overflow:hidden}.embed-wrap{position:relative;flex:1;min-height:0;aspect-ratio:9 / 16;max-width:min(calc(100vw - 32px),calc((100svh - 200px)*.5625));border-radius:var(--radius);overflow:hidden;background:#121212;box-shadow:0 8px 32px #0009}.swipe-zone{position:absolute;top:0;right:0;bottom:0;left:0;z-index:5}.video-progress-bar{position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--accent);transform:scaleX(0);transform-origin:left;z-index:10;pointer-events:none;opacity:0;transition:opacity .2s}.video-progress-bar.playing{opacity:1}@media(hover:hover)and (pointer:fine){.swipe-zone{pointer-events:none}}#tiktok-frame{width:100%;height:100%;border:none;display:block}.player-meta{width:100%;max-width:390px;display:flex;flex-direction:column;gap:10px}.video-meta-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.video-date{font-size:.78rem;color:var(--text-muted)}.video-links{display:flex;align-items:center;gap:8px}.copy-link-btn{background:none;border:none;color:var(--text-muted);font-size:.9rem;cursor:pointer;padding:0;line-height:1;transition:color .15s}.copy-link-btn:hover{color:var(--text)}.copy-link-btn.copied{color:#4caf50}.open-in-tiktok{font-size:.78rem;color:var(--text-muted);text-decoration:none;white-space:nowrap;transition:color .15s}.open-in-tiktok:hover{color:var(--accent)}.btn-skip{width:100%;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);padding:14px;font-size:1rem;font-weight:700;cursor:pointer;transition:background .15s;letter-spacing:.3px}.btn-skip:hover{background:var(--accent-hover)}.counter{text-align:center;font-size:.85rem;color:var(--text-muted)}.skip-notice{font-size:.73rem;color:var(--text-muted);text-align:center;display:none}.skip-notice.visible{display:block}@media(max-width:480px){.player-header{padding:10px 14px;flex-wrap:nowrap}.btn-ghost{padding:8px 14px;font-size:.8rem}.player-body{padding:8px 10px 12px;gap:8px}}@media(pointer:coarse){.btn-skip{display:none}}.screen-end{flex:1;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:20px;text-align:center}.end-icon{font-size:3rem}.end-title{font-size:1.4rem;font-weight:700}.end-sub{font-size:.9rem;color:var(--text-muted)}.end-actions{display:flex;flex-direction:column;gap:10px;width:100%;max-width:320px}.session-stats{font-size:.85rem;color:var(--text-muted)}