*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;background-color:#f8f9fa;min-height:100vh;display:flex;justify-content:center;align-items:flex-start;padding:20px 0}.container{width:100%;max-width:1000px;margin:0 auto;padding:30px;border-radius:12px;width:80vw}h1{font-size:2.8rem;text-align:center;margin-bottom:2rem;color:#2c3e50;font-weight:700;letter-spacing:-.5px}.url-input-container{margin-bottom:2.5rem;width:100%;max-width:800px;margin-left:auto;margin-right:auto}.url-input{width:100%;padding:16px 20px;font-size:16px;border-radius:10px;border:2px solid #e0e0e0;transition:all .3s ease}.url-input:focus{outline:none;border-color:#3498db;box-shadow:0 0 0 3px #3498db40}.global-controls{max-width:800px;margin-left:auto;margin-right:auto;margin-bottom:20px;text-align:center}.control-button{padding:12px 24px;font-size:16px;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;transition:all .3s ease;box-shadow:0 2px 5px #0000001a}.control-button:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.control-button:active{transform:translateY(0)}.play-button{background-color:#4caf50}.pause-button{background-color:#f44336}.remove-button{background-color:#999;padding:8px 16px;font-size:14px}.remove-button:hover{background-color:#f33}.video-container{margin-bottom:30px;background-color:#fff;border-radius:12px;box-shadow:0 2px 15px #0000000d;border:1px solid #f0f0f0;overflow:hidden;max-width:800px;margin-left:auto;margin-right:auto;padding:8px}.video-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.volume-control{display:flex;align-items:center;gap:12px}.volume-slider{width:150px;height:8px;-webkit-appearance:none;appearance:none;background:#e0e0e0;border-radius:4px;outline:none;transition:background .2s}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:#3498db;cursor:pointer;box-shadow:0 1px 3px #0003}.volume-slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#3498db;cursor:pointer;box-shadow:0 1px 3px #0003}.empty-state{text-align:center;padding:60px 40px;color:#777;font-size:18px;background-color:#fff;border-radius:12px;box-shadow:0 2px 15px #0000000d;border:1px solid #f0f0f0;margin:20px auto;max-width:800px}.player-wrapper{border-radius:8px;overflow:hidden;box-shadow:0 2px 10px #0000001a}@media (max-width: 768px){.container{padding:20px;margin:10px;width:calc(100vw - 20px)}h1{font-size:2.2rem;margin-bottom:1.5rem}.video-controls{flex-direction:column;align-items:flex-start;gap:15px}.url-input{padding:14px 16px}.player-wrapper{height:220px}}