* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #1a2a3a, #0d1520);
            color: #e0e0e0;
            min-height: 100vh;
            padding: 20px;
        }
        
        .container {
            max-width: 900px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            text-align: center;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid #34495e;
        }
        
        h1 {
            color: #f39c12;
            font-size: 2.5rem;
            text-shadow: 0 0 10px rgba(243, 156, 18, 0.3);
            margin-bottom: 5px;
        }
        
        .subtitle {
            color: #7f8c8d;
            font-size: 1.1rem;
        }
        
        .player-container {
            background-color: rgba(30, 40, 50, 0.8);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #3a506b;
        }
        
        .player-header {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
        }
        
        .album-cover {
            width: 120px;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            margin-right: 25px;
            border: 3px solid #f39c12;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        
        .album-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .song-info {
            flex: 1;
        }
        
        .song-title {
            font-size: 1.8rem;
            color: #f1c40f;
            margin-bottom: 8px;
            word-wrap: break-word;
        }
        
        .song-artist {
            font-size: 1.2rem;
            color: #bdc3c7;
            margin-bottom: 5px;
        }
        
        .song-status {
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        
        .player-controls {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .progress-container {
            width: 100%;
            margin-bottom: 20px;
        }
        
        .progress-bar {
            width: 100%;
            height: 8px;
            background-color: #2c3e50;
            border-radius: 4px;
            overflow: hidden;
            margin-bottom: 8px;
            cursor: pointer;
        }
        
        .progress {
            height: 100%;
            background-color: #f39c12;
            width: 0%;
            border-radius: 4px;
            transition: width 0.1s linear;
        }
        
        .time-info {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        
        .control-buttons {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 25px;
            margin-top: 10px;
        }
        
        .control-btn {
            background: none;
            border: none;
            color: #ecf0f1;
            font-size: 1.8rem;
            cursor: pointer;
            transition: all 0.3s;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .play-btn {
            background-color: #f39c12;
            color: #2c3e50;
            font-size: 2.2rem;
            box-shadow: 0 5px 15px rgba(243, 156, 18, 0.4);
        }
        
        .control-btn:hover {
            transform: scale(1.1);
            color: #f39c12;
        }
        
        .play-btn:hover {
            background-color: #e67e22;
            color: #ecf0f1;
        }
        
        .loop-btn.active {
            color: #f39c12;
        }
        
        .playlist-container {
            background-color: rgba(30, 40, 50, 0.8);
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #3a506b;
            margin-bottom: 30px;
        }
        
        /* 新增：可添加歌曲列表样式区分 */
        #available-songs-container {
            background-color: rgba(25, 35, 45, 0.8);
        }
        
        #available-songs-container .playlist-header {
            border-bottom: 1px solid #2c3e50;
        }
        
        #available-songs-container .playlist-title {
            color: #3498db;
        }
        
        .playlist-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #34495e;
        }
        
        .playlist-title {
            font-size: 1.5rem;
            color: #f1c40f;
        }
        
        .playlist-count {
            color: #7f8c8d;
            font-size: 1rem;
        }
        
        .playlist {
            list-style-type: none;
        }
        
        .playlist-item {
            display: flex;
            align-items: center;
            padding: 15px;
            border-bottom: 1px solid #2c3e50;
            transition: all 0.3s;
            cursor: pointer;
        }
        
        .playlist-item:hover {
            background-color: rgba(52, 73, 94, 0.5);
        }
        
        .playlist-item.active {
            background-color: rgba(243, 156, 18, 0.2);
            border-left: 4px solid #f39c12;
        }
        
        .song-number {
            color: #f39c12;
            font-weight: bold;
            width: 30px;
            text-align: center;
            font-size: 1.2rem;
        }
        
        .song-details {
            flex: 1;
            margin-left: 15px;
        }
        
        .song-name {
            font-size: 1.2rem;
            color: #ecf0f1;
            margin-bottom: 5px;
        }
        
        .song-length {
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        
        .song-actions {
            display: flex;
            gap: 10px;
        }
        
        .action-btn {
            background: none;
            border: none;
            color: #bdc3c7;
            font-size: 1.2rem;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }
        
        .action-btn:hover {
            color: #f39c12;
        }
        
        /* 新增：移入/移出按钮样式 */
        .add-btn {
            color: #2ecc71;
        }
        
        .add-btn:hover {
            background-color: rgba(46, 204, 113, 0.2);
            color: #27ae60;
        }
        
        .remove-btn {
            color: #e74c3c;
        }
        
        .remove-btn:hover {
            background-color: rgba(231, 76, 60, 0.2);
            color: #c0392b;
        }
        
        .footer {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #34495e;
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        
        /* 悬浮按钮样式 */
        .floating-btn {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #f39c12;
            color: #2c3e50;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 4px 8px rgba(0,0,0,0.3);
            z-index: 999;
        }
        

        
        @media (max-width: 768px) {
            .container {
                padding: 10px;
            }
            
            .player-header {
                flex-direction: column;
                text-align: center;
            }
            
            .album-cover {
                margin-right: 0;
                margin-bottom: 20px;
            }
            
            .control-buttons {
                gap: 15px;
            }
            
            .control-btn {
                width: 50px;
                height: 50px;
                font-size: 1.5rem;
            }
            
            .play-btn {
                font-size: 1.8rem;
            }
            

        }