*{box-sizing:border-box;margin:0;padding:0}[hidden]{display:none!important}:root{--bg-primary: #fffff8;--bg-secondary: #f4f4ec;--bg-tertiary: #e8e8e0;--accent: #5a1a1a;--accent-hover: #7a2a2a;--accent-light: rgba(90, 26, 26, .1);--text-primary: #111;--text-secondary: #454545;--text-muted: #6b6b6b;--border: #ccc;--link: #5a1a1a;font-family:"Source Serif Pro",ET Book,Palatino,Palatino Linotype,Palatino LT STD,Book Antiqua,Georgia,serif;font-size:18px;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary)}@media(prefers-color-scheme:dark){:root{--bg-primary: #1a1a1a;--bg-secondary: #252525;--bg-tertiary: #333;--accent: #c17171;--accent-hover: #d48888;--accent-light: rgba(193, 113, 113, .15);--text-primary: #e0e0e0;--text-secondary: #a0a0a0;--text-muted: #777;--border: #444;--link: #c17171}}body{min-height:100vh;display:flex;flex-direction:column}#app{flex:1;display:flex;flex-direction:column;max-width:720px;margin:0 auto;padding:3rem 1.5rem;width:100%;padding-bottom:140px}header{text-align:left;margin-bottom:3rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}header h1{font-size:2rem;font-weight:400;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:.75rem}header .subtitle{color:var(--text-secondary);font-size:1rem;font-style:italic}header .subtitle a{color:var(--link);text-decoration:none;border-bottom:1px solid var(--accent-light);transition:border-color .2s}header .subtitle a:hover{border-color:var(--accent)}.upload-section{flex:1;display:flex;align-items:center;justify-content:center}.upload-label{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;padding:3rem 2rem;border:1px dashed var(--border);background:var(--bg-secondary);cursor:pointer;transition:all .2s ease}.upload-label:hover,.upload-label.dragover{border-color:var(--accent);background:var(--bg-tertiary)}.upload-icon{color:var(--accent);margin-bottom:1rem;opacity:.8}.upload-text{font-size:1rem;margin-bottom:.5rem}.upload-hint{color:var(--text-muted);font-size:.875rem;font-style:italic}.editor-section{display:flex;flex-direction:column;gap:2rem}.speed-control{background:var(--bg-secondary);padding:1.5rem;border:1px solid var(--border)}.speed-labels{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.speed-label-left,.speed-label-right{color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.speed-label-center{font-size:1.25rem;font-weight:400;color:var(--accent);font-variant-numeric:tabular-nums}input[type=range]{width:100%;height:4px;-webkit-appearance:none;appearance:none;background:var(--border);outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;background:var(--accent);border-radius:50%;cursor:pointer;transition:transform .15s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}input[type=range]::-moz-range-thumb{width:16px;height:16px;background:var(--accent);border-radius:50%;border:none;cursor:pointer}.extras{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.extra-control{background:var(--bg-secondary);padding:1.25rem;border:1px solid var(--border)}.extra-control label{display:flex;justify-content:space-between;font-size:.875rem;margin-bottom:.75rem;color:var(--text-secondary)}.extra-control label span:last-child{color:var(--text-primary);font-variant-numeric:tabular-nums}.action-buttons{display:flex;gap:1rem;justify-content:flex-start}.btn{padding:.6rem 1.5rem;font-size:.9rem;font-family:inherit;cursor:pointer;border:1px solid var(--border);transition:all .15s ease}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-primary);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-tertiary)}.export-progress{display:flex;flex-direction:column;align-items:flex-start;gap:.5rem}.export-progress-bar{width:100%;height:3px;background:var(--border);overflow:hidden}.export-progress-fill{height:100%;width:0%;background:var(--accent);transition:width .3s ease}#export-status{color:var(--text-muted);font-size:.875rem;font-style:italic}footer{text-align:left;padding:1.5rem 0;color:var(--text-muted);font-size:.8rem;border-top:1px solid var(--border);margin-top:2rem}.player-bar{position:fixed;bottom:0;left:0;right:0;background:var(--bg-secondary);border-top:1px solid var(--border);padding:1rem;z-index:100}.player-bar-inner{max-width:1000px;margin:0 auto;display:flex;align-items:center;gap:1.5rem}.player-track-info{display:flex;align-items:center;gap:.75rem;min-width:180px}.track-artwork{width:40px;height:40px;background:var(--bg-tertiary);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--accent)}.track-details{display:flex;flex-direction:column}.track-name{font-size:.875rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}.track-artist{font-size:.75rem;color:var(--text-muted);font-style:italic}.player-controls{display:flex;gap:.5rem}.control-btn{width:36px;height:36px;border-radius:0;border:1px solid var(--border);background:var(--bg-primary);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.control-btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}.player-timeline{flex:1;display:flex;align-items:center;gap:.75rem}.time-current,.time-duration{font-size:.75rem;color:var(--text-muted);min-width:40px;font-variant-numeric:tabular-nums}.time-current{text-align:right}.seek-bar{flex:1;height:4px;background:var(--border);position:relative;cursor:pointer}.seek-bar-fill{height:100%;width:0%;background:var(--accent);position:absolute;top:0;left:0}.seek-bar-handle{width:12px;height:12px;background:var(--accent);border-radius:50%;position:absolute;top:50%;left:0%;transform:translate(-50%,-50%);transition:transform .1s}.seek-bar:hover .seek-bar-handle{transform:translate(-50%,-50%) scale(1.2)}.btn-load-new{width:36px;height:36px;border:1px solid var(--border);background:transparent;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.btn-load-new:hover{border-color:var(--accent);color:var(--accent)}@media(max-width:768px){:root{font-size:16px}#app{padding:1.5rem 1rem;padding-bottom:160px}header h1{font-size:1.5rem}.extras{grid-template-columns:1fr}.player-bar-inner{flex-wrap:wrap;gap:.75rem}.player-track-info{order:1;flex:1;min-width:auto}.player-controls{order:2}.btn-load-new{order:3}.player-timeline{order:4;width:100%}}@media print{.player-bar,.upload-section,.action-buttons{display:none}}