:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#213547;background-color:#f5f7fa;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:1.6em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.audio-player{background:#f8f9fa;border-radius:12px;padding:24px;box-shadow:0 4px 12px #0000001a;margin-bottom:24px;width:600px;min-width:600px;max-width:600px;margin-left:auto;margin-right:auto;box-sizing:border-box}@media (max-width: 650px){.audio-player{width:100%;min-width:100%;max-width:100%;margin-left:0;margin-right:0;border-radius:8px;padding:16px}.player-controls{flex-wrap:wrap;gap:8px}.progress-section{flex-direction:column;gap:6px;width:100%;min-width:0}.progress-bar{width:100%;min-width:0}}.track-info{text-align:center;margin-bottom:20px;min-height:80px;max-height:80px;display:flex;flex-direction:column;justify-content:center;width:100%;box-sizing:border-box;overflow:hidden}.track-title{margin:0 0 8px;font-size:1.3rem;color:#333;font-weight:600;line-height:1.3;width:100%;box-sizing:border-box;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;max-height:40px}.track-artist{margin:0;color:#666;font-size:1rem;line-height:1.2;width:100%;box-sizing:border-box;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-height:20px}.player-controls{display:flex;justify-content:center;align-items:center;gap:12px;margin-bottom:20px;width:100%;min-height:80px}.control-btn{background:#007bff;border:none;border-radius:50%;width:60px;height:60px;font-size:24px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.control-btn.nav-btn{width:50px;height:50px;font-size:20px;background:#6c757d}.control-btn:hover:not(:disabled){background:#0056b3;transform:scale(1.05)}.control-btn.nav-btn:hover:not(:disabled){background:#5a6268;transform:scale(1.05)}.control-btn:disabled{background:#6c757d;cursor:not-allowed;opacity:.6}.progress-section{display:flex;align-items:center;gap:12px;margin-bottom:16px;width:100%;box-sizing:border-box}.time-display{font-family:Courier New,monospace;font-size:.9rem;color:#666;min-width:45px;width:45px;text-align:center;flex-shrink:0}.progress-bar{flex:1;height:8px;border-radius:4px;background:#e9ecef;outline:none;cursor:pointer}.progress-bar::-webkit-slider-thumb{appearance:none;width:16px;height:16px;border-radius:50%;background:#007bff;cursor:pointer;border:2px solid #fff;box-shadow:0 2px 4px #0003}.progress-bar::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#007bff;cursor:pointer;border:2px solid #fff;box-shadow:0 2px 4px #0003}.volume-section{display:flex;align-items:center;gap:12px;justify-content:center}.volume-icon{font-size:1.2rem}.volume-slider{width:120px;height:6px;border-radius:3px;background:#e9ecef;outline:none;cursor:pointer}.volume-slider::-webkit-slider-thumb{appearance:none;width:14px;height:14px;border-radius:50%;background:#007bff;cursor:pointer;border:1px solid #fff;box-shadow:0 1px 3px #0003}.volume-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#007bff;cursor:pointer;border:1px solid #fff;box-shadow:0 1px 3px #0003}.playlist{background:#fff;border-radius:12px;box-shadow:0 4px 12px #0000001a;overflow:hidden}@media (max-width: 500px){.playlist{max-width:100vw;width:100vw;border-radius:0;padding:8px 2px;box-shadow:none}.playlist-header{padding:12px 4px;flex-direction:column;gap:6px}.playlist-header h2{font-size:1.1rem;word-break:break-word}.track-list{max-height:250px;padding:0 2px}.playlist-item{font-size:.95rem;padding:6px 2px;word-break:break-word}}.playlist-header{padding:20px 24px;border-bottom:1px solid #e9ecef;display:flex;justify-content:space-between;align-items:center;background:#f8f9fa}.playlist-header h2{margin:0;color:#333;font-size:1.5rem;font-weight:600}.file-upload{position:relative}.file-input{position:absolute;border-radius:12px;box-shadow:0 4px 12px #0000001a;height:0}.upload-btn{display:inline-block;padding:10px 20px;background:#28a745;color:#fff;border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500;transition:background-color .2s ease}.track-list{max-height:400px;overflow-y:auto}.empty-playlist{padding:60px 24px;text-align:center;color:#666}.empty-playlist p{margin:0 0 8px}.empty-subtitle{font-size:.9rem;opacity:.7}.track-item{padding:16px 24px;border-bottom:1px solid #f1f3f4;cursor:pointer;transition:background-color .2s ease;display:flex;justify-content:space-between;align-items:center}.track-item:hover{background:#f8f9fa}.track-item.active{background:#e3f2fd;border-left:4px solid #007bff}.track-item:last-child{border-bottom:none}.track-item.preloaded{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-left:3px solid #28a745}.track-item.preloaded .track-name:before{content:"🎵 ";margin-right:4px}.track-item.preloaded:hover{background:linear-gradient(135deg,#e9ecef,#dee2e6)}.track-details{flex:1;min-width:0}.track-name{font-weight:500;color:#333;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-meta{font-size:.85rem;color:#666;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-actions{margin-left:12px}.now-playing{color:#007bff;font-size:1.2rem;animation:pulse 1.5s ease-in-out infinite alternate}@keyframes pulse{0%{opacity:1}to{opacity:.5}}.track-list::-webkit-scrollbar{width:6px}.track-list::-webkit-scrollbar-track{background:#f1f1f1}.track-list::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}.track-list::-webkit-scrollbar-thumb:hover{background:#a8a8a8}.app{max-width:800px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column}.app-header{text-align:center;margin-bottom:32px}.app-header h1{margin:0 0 8px;font-size:2.5rem;color:#333;font-weight:700}.app-header p{margin:0;color:#666;font-size:1.1rem}.app-main{flex:1;display:flex;flex-direction:column;gap:24px}.app-footer{text-align:center;margin-top:32px;padding-top:20px;border-top:1px solid #e9ecef}.app-footer p{margin:0;color:#666;font-size:.9rem}@media (max-width: 768px){.app{padding:16px}.app-header h1{font-size:2rem}.app-main{gap:16px}}@media (max-width: 500px){.app{max-width:100vw;width:100vw;padding:8px 0;box-sizing:border-box}.app-header h1{font-size:1.3rem;word-break:break-word}.app-main{gap:10px}}