* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            background-color: black;
            padding: 20px;
            align-items: center;
            display: flex;
            justify-content: center;
        }

        .music-player {
            max-width: 500px;
            background: black;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        .player-header {
            display: flex;
            padding: 20px;
            align-items: center;
            gap: 15px;
        }

        .album-art {
            width: 80px;
            height: 80px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border: 2px solid #333;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: #666;
        }

        .player-info {
            flex: 1;
        }

        .album-name {
            font-weight: bold;
            font-size: 16px;
            margin-bottom: 4px;
        }

        .album-artist {
            color: #666;
            font-size: 14px;
            margin-bottom: 4px;
        }

        .current-track {
            color: #333;
            font-size: 14px;
            margin-bottom: 10px;
        }

        .transport-controls {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .control-btn {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            padding: 5px;
            border-radius: 3px;
            transition: background-color 0.2s;
        }

        .control-btn:hover {
            background-color: #f0f0f0;
        }

        .time-display {
            font-size: 12px;
            color: #666;
            margin-left: 10px;
        }

        .track-list {
            border-top: 1px solid #eee;
        }

        .track-item {
            padding: 12px 20px;
            border-bottom: 1px solid #eee;
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
        }

        .track-item:hover {
            background-color: #f8f8f8;
        }

        .track-item.active {
            background-color: #e3f2fd;
            color: #1976d2;
        }

        .track-number {
            margin-right: 10px;
            font-weight: bold;
            width: 20px;
        }

        .track-name {
            flex: 1;
        }

        .hidden {
            display: none;
        }