:root,:root[data-theme=dark]{--rb-body-h: 132px;color-scheme:dark;--bg: #14161c;--panel: #1d2029;--panel-2: #242834;--text: #e8eaf0;--muted: #9aa1b2;--accent: #6c8cff;--danger: #e05656;--line: #2a2e3a;--line-strong: #383d4c;--playhead: #ff4757;--playhead-glow: rgba(255, 71, 87, .6);--scrollbar: #3a4050;--scrollbar-hover: #4a5164;--kb-white: #f4f4f4;--kb-edge: #c8c8c8;--kb-black: #2b2f3a;--kb-label: #333333;--row-alt: rgba(255, 255, 255, .035);--row-alt-strong: rgba(255, 255, 255, .25);--grid-measure: #4a5164;--grid-beat: #3a4050;--grid-16th: #2c313d;--shadow: rgba(0, 0, 0, .5);--scrim: rgba(0, 0, 0, .45);--ghost: rgba(200, 205, 215, .3)}:root[data-theme=light]{color-scheme:light;--bg: #f4f5f8;--panel: #ffffff;--panel-2: #eceef3;--text: #1b1f27;--muted: #5f6675;--accent: #3162d8;--danger: #c53a2f;--line: #dcdfe6;--line-strong: #c3c8d2;--playhead: #e03040;--playhead-glow: rgba(224, 48, 64, .5);--scrollbar: #c3c8d2;--scrollbar-hover: #a8aeba;--kb-white: #ffffff;--kb-edge: #c8ccd4;--kb-black: #4a505e;--kb-label: #4a505e;--row-alt: rgba(0, 0, 0, .04);--row-alt-strong: rgba(0, 0, 0, .18);--grid-measure: #b4bac6;--grid-beat: #d2d6de;--grid-16th: #e6e9ee;--shadow: rgba(20, 25, 40, .18);--scrim: rgba(20, 25, 40, .28);--ghost: rgba(60, 60, 60, .28)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}.app{display:flex;flex-direction:column;height:100vh}.app-header{display:flex;align-items:center;gap:10px;padding:4px 10px;background:var(--panel);border-bottom:1px solid var(--line)}.app-header h1{font-size:13px;font-weight:600;margin:0;flex:0 0 auto}.file-toolbar{display:flex;gap:8px;margin-left:auto}.view-toggle{display:flex;gap:4px;margin-left:8px;padding-left:8px;border-left:1px solid var(--line)}.view-btn{padding:4px 10px;font-size:12px;background:var(--panel-2);border:1px solid var(--line);border-radius:0;color:var(--muted);cursor:pointer}.view-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.view-btn:hover:not(.active){color:var(--text);border-color:var(--accent)}.btn{background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:0;padding:6px 12px;font-size:13px;cursor:pointer}.btn:hover:not(:disabled){border-color:var(--accent)}.btn:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.active{border-color:var(--accent);color:var(--accent)}.btn.active.warn,.btn.danger:hover{color:var(--danger);border-color:var(--danger)}.btn.small{padding:3px 8px;font-size:12px}.btn.add-track{width:100%;margin-top:8px}input,select{background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:0;padding:5px 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