:root{--bg: #0b0d10;--chrome-panel: rgba(11, 13, 16, .3);--panel: rgba(16, 19, 24, .72);--panel-solid: rgba(17, 20, 27, .74);--panel-2: rgba(36, 41, 54, .76);--text: #edf0f5;--muted: #9ca7b8;--accent: #4f9dff;--accent-2: #43c7a7;--border: rgba(154, 163, 178, .26);--decoded: #2f7d46;--decoding: #c9952d;--inout: rgba(79, 157, 255, .18);--inout-marker: #4f9dff;--playhead: #ff5a5a;--error: #ff6b6b}*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:system-ui,Segoe UI,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;font-size:14px}#app{position:fixed;inset:0;overflow:hidden;background:radial-gradient(circle at 50% 20%,#18202a 0,#0b0d10 42%,#07080b)}.topbar{position:fixed;z-index:20;top:0;left:0;right:0;height:34px;display:grid;grid-template-columns:180px minmax(0,1fr) 180px;align-items:center;gap:12px;padding:0 18px;background:var(--chrome-panel);border-bottom:1px solid rgba(154,163,178,.09);backdrop-filter:blur(10px);transition:opacity .12s ease,visibility .12s ease}.topbar.is-video-overlap{opacity:0;visibility:hidden;pointer-events:none}.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}.topbar h1{margin:0;font-size:13px;font-weight:700;letter-spacing:0;white-space:nowrap}.brand a{color:var(--muted);font-size:12px;font-weight:650;text-decoration:none;white-space:nowrap}.brand a:hover{color:var(--text);text-decoration:underline}.filename{grid-column:2;min-width:0;color:#c9d4e5;font-size:12px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.stage{position:fixed;inset:0;overflow:hidden;background:#000;cursor:grab;touch-action:none;user-select:none}.chrome-hidden .stage{inset:0}.stage.is-panning{cursor:grabbing}.chrome-hidden .stage.cursor-idle{cursor:none}.stage.dragover{outline:2px dashed var(--accent);outline-offset:-12px}#canvas{position:absolute;display:block;background:#000;box-shadow:0 16px 48px #0000007a}.drop-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--muted);text-align:center;pointer-events:none}.drop-hint p{margin:0}.drop-hint .sub{font-size:12px;opacity:.82}.subtitle-overlay{position:fixed;z-index:24;left:50%;top:50%;max-width:min(900px,calc(100vw - 64px));transform:translate(-50%,-100%);padding:7px 12px;color:#fff;background:#000000c2;border-radius:5px;font-size:clamp(16px,2vw,25px);line-height:1.35;text-align:center;text-shadow:0 1px 2px #000;pointer-events:none}.subtitle-overlay.is-preparing{padding:3px 7px;color:#e89535;background:#140d05b8;border:1px solid rgba(232,149,53,.32);box-shadow:none;font-size:11px;font-weight:500;line-height:1.2;text-shadow:none}.subtitle-translation-source{position:fixed;z-index:22;width:300px;max-height:70vh;overflow:auto;padding:7px;color:#edf0f5d1;background:#090b0fb8;border:1px solid rgba(154,163,178,.22);border-radius:6px;font-size:12px;line-height:1.4;backdrop-filter:blur(8px);user-select:text;scrollbar-width:thin;scrollbar-color:rgba(82,93,110,.72) transparent;transition:opacity .12s ease}.subtitle-translation-source.over-video{opacity:.025}.subtitle-translation-source::-webkit-scrollbar{width:6px;height:6px}.subtitle-translation-source::-webkit-scrollbar-track{background:transparent}.subtitle-translation-source::-webkit-scrollbar-thumb{background:#525d6ead;border-radius:999px}.subtitle-translation-source::-webkit-scrollbar-thumb:hover{background:#6c798ed1}.subtitle-translation-source::-webkit-scrollbar-corner{background:transparent}.subtitle-translation-source .subtitle-cue{display:block;margin:0 0 3px;padding:4px 5px;border-radius:4px;transition:background .12s ease,color .12s ease}.subtitle-translation-source .subtitle-cue.is-active{color:#fff;background:#4f9dff38;box-shadow:inset 2px 0 0 var(--accent)}.subtitle-translation-source time{color:#9ca7b8cc;margin-right:6px;font-size:10px;font-variant-numeric:tabular-nums}.resume-btn,.show-ui-btn{position:fixed;z-index:30;right:18px;bottom:18px;background:var(--accent);color:#fff;border:none;padding:10px 14px;border-radius:6px;cursor:pointer;font-size:13px;font-weight:650;box-shadow:0 10px 30px #00000061}.resume-btn{left:50%;right:auto;transform:translate(-50%)}.error{position:fixed;z-index:40;top:56px;left:50%;transform:translate(-50%);width:min(720px,calc(100vw - 32px));background:#ff6b6b1f;border:1px solid rgba(255,107,107,.72);color:#ffd2d2;padding:10px 12px;border-radius:6px;white-space:pre-wrap;backdrop-filter:blur(12px)}.floating-ui{position:fixed;z-index:25;left:16px;right:16px;bottom:14px;max-width:1180px;margin:0 auto;padding:7px 38px 7px 7px;display:flex;flex-direction:column;gap:5px;background:var(--chrome-panel);border:1px solid var(--border);border-radius:8px;box-shadow:0 14px 54px #0000005c;backdrop-filter:blur(12px)}.collapse-ui-btn{position:absolute;right:7px;bottom:7px;width:28px;min-height:28px;padding:0;border-radius:5px;color:var(--muted);background:#2429368f}.collapse-ui-btn:hover:not(:disabled){color:var(--text)}.advanced-btn{position:absolute;z-index:2;right:8px;top:7px;width:24px;min-height:24px;padding:0;border-radius:50%;color:var(--muted);background:#242936b8}.capture-frame-btn{position:absolute;z-index:2;right:8px;top:38px;width:24px;min-height:24px;padding:0;border-radius:50%;color:var(--muted);background:#242936b8;font-size:8px;font-weight:700}.capture-frame-btn:hover:not(:disabled){color:var(--text)}.advanced-popover{position:absolute;z-index:80;right:7px;bottom:40px;width:min(430px,calc(100vw - 48px));max-height:min(540px,calc(100vh - 80px));overflow:auto;padding:10px;background:#11141bfa;border:1px solid var(--border);border-radius:8px;box-shadow:0 18px 60px #00000094}.advanced-head,.advanced-option-head{display:flex;align-items:center;gap:10px}.advanced-head{margin-bottom:9px}.advanced-head strong{flex:1}.advanced-section{display:grid;gap:9px}.advanced-option-head>div{display:grid;gap:3px;flex:1}.advanced-option-head small,.advanced-status{color:var(--muted);font-size:12px}.advanced-status{min-height:17px}.diagnostics-details{margin-top:10px;padding-top:9px;border-top:1px solid rgba(154,163,178,.18)}.diagnostics-details summary{cursor:pointer;color:var(--text);font-weight:650;font-size:12px}.diagnostics-actions{display:flex;justify-content:flex-end;gap:6px;margin:8px 0 6px}.diagnostics-output,#diagnosticsOutput{max-height:260px;margin:0;overflow:auto;padding:8px;border:1px solid rgba(154,163,178,.18);border-radius:5px;background:#050608b3;color:#cdd6e4;font:11px/1.45 ui-monospace,Consolas,monospace;white-space:pre-wrap;user-select:text}.subtitle-cue{display:block;margin-bottom:5px}.subtitle-cue time{color:var(--muted);margin-right:7px;font-variant-numeric:tabular-nums}.show-ui-btn{padding:7px 10px;min-height:28px;background:#242936b8;border:1px solid var(--border);color:var(--text);backdrop-filter:blur(10px);transition:opacity .18s ease,transform .18s ease}.show-ui-btn.is-idle{opacity:0;pointer-events:none;transform:translateY(6px)}.info-row,.controls,.legend{display:flex;align-items:center;gap:7px}.zoom-select,.fps-control,.vol{display:inline-flex;align-items:center;gap:6px;color:var(--muted);white-space:nowrap}.volume-popover{position:relative;display:inline-flex;align-items:center;margin-left:auto}#volumeToggle{width:30px;padding:0;font-size:15px;line-height:1}.volume-panel{position:absolute;right:0;bottom:calc(100% + 8px);padding:8px 10px;background:#11141bf5;border:1px solid var(--border);border-radius:7px;box-shadow:0 12px 34px #00000070;backdrop-filter:blur(12px)}select,button{background:var(--panel-2);color:var(--text);border:1px solid var(--border);min-height:28px;padding:0 9px;border-radius:6px;cursor:pointer;font-size:12px}select{padding-right:28px;color:#e6ebf3}input[type=number]{min-height:28px;width:72px;padding:0 7px;border:1px solid var(--border);border-radius:6px;background:var(--panel-2);color:var(--text);font-size:12px;font-variant-numeric:tabular-nums}.fps-control select{width:104px}.fps-control input{width:66px}input[type=number]:disabled{opacity:.48;cursor:default}button:hover:not(:disabled),select:hover,input[type=number]:hover:not(:disabled){background:#303747}button:disabled{opacity:.45;cursor:default}button.active{background:var(--accent);border-color:var(--accent);color:#fff}#playPause{min-width:84px}#exportClipBtn:not(:disabled){border-color:#43c7a7b8;color:#d7fff4}.timeline-wrap{width:100%}.timeline{width:100%;height:34px;display:block;background:var(--panel-solid);border:1px solid var(--border);border-radius:5px;cursor:pointer;touch-action:none}.timeline-preview{position:fixed;z-index:45;width:188px;padding:4px;background:#090b0fe0;border:1px solid rgba(154,163,178,.34);border-radius:6px;box-shadow:0 14px 40px #00000073;pointer-events:none;backdrop-filter:blur(10px)}.timeline-preview canvas{display:block;width:180px;height:102px;background:#050608;border-radius:4px}.timeline-preview span{display:block;padding-top:3px;color:var(--text);font-size:11px;text-align:center;font-variant-numeric:tabular-nums}.context-menu{position:fixed;z-index:70;min-width:96px;padding:4px;background:#11141bf7;border:1px solid var(--border);border-radius:7px;box-shadow:0 14px 38px #0000007a;backdrop-filter:blur(12px)}.context-menu button{width:100%;justify-content:flex-start;display:flex;border:none;background:transparent;border-radius:5px;text-align:left}.context-menu button:hover:not(:disabled){background:var(--panel-2)}.filmstrip-wrap{width:100%;min-height:64px}.filmstrip{width:100%;height:64px;display:block;background:#0d1015;border:1px solid var(--border);border-radius:6px;cursor:pointer;touch-action:none}.info-row{flex-wrap:wrap;font-variant-numeric:tabular-nums}.time-cluster{display:flex;flex-wrap:wrap;align-items:center;gap:6px;min-width:0}.sep,.metric,.media-info,.mem-usage{color:var(--muted)}.metric{padding-left:8px}.inout-label{color:var(--accent);font-size:12px}.media-info{margin-left:auto;font-size:12px}.mem-usage{font-size:12px}.controls{flex-wrap:wrap}.controls .spacer{flex:0 0 10px}.vol input{width:150px;accent-color:var(--accent)}.legend{flex-wrap:wrap;gap:12px;min-height:28px;color:var(--muted);font-size:12px}.legend span{display:inline-flex;align-items:center;gap:6px}.sw{width:14px;height:10px;border-radius:2px;display:inline-block}.sw-decoded{background:var(--decoded)}.sw-decoding{background:var(--decoding)}.sw-inout{background:var(--inout-marker)}.sw-playhead{background:var(--playhead);width:3px}.modal-backdrop{position:fixed;z-index:60;inset:0;display:grid;place-items:center;padding:18px;background:#00000085;backdrop-filter:blur(8px)}.export-modal{width:min(440px,calc(100vw - 28px));display:flex;flex-direction:column;gap:12px;padding:14px;background:#11141bf5;border:1px solid var(--border);border-radius:8px;box-shadow:0 18px 70px #00000085}.export-modal-head,.export-actions,.export-plan{display:flex;align-items:center;gap:8px}.export-modal-head h2{margin:0;flex:1;font-size:15px;letter-spacing:0}.icon-btn{width:28px;min-height:28px;padding:0;font-size:18px;line-height:1}.export-grid{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:7px 12px;padding:10px;background:#07080b6b;border:1px solid rgba(154,163,178,.18);border-radius:6px;font-size:12px}.export-grid span,.export-plan,.export-target,.export-status{color:var(--muted)}.export-grid strong{min-width:0;color:var(--text);font-weight:650;overflow-wrap:anywhere}.export-target{display:flex;align-items:center;justify-content:space-between;gap:10px;white-space:nowrap}.export-target select{min-width:130px}.export-plan{justify-content:space-between;flex-wrap:wrap;font-size:12px}.export-status{min-height:18px;font-size:12px}.export-status.error-text{color:var(--error)}.export-actions{justify-content:flex-end}#exportStartBtn{min-width:104px;background:var(--accent);border-color:var(--accent);color:#fff}@media (max-width: 760px){.topbar{grid-template-columns:132px minmax(0,1fr);padding:0 12px}.floating-ui{left:8px;right:8px;bottom:8px}.media-info,.mem-usage{margin-left:0}.fps-control input{width:62px}.fps-control select{width:96px}.volume-panel{right:auto;left:0}.vol input{width:120px}}