/* =========================================
   🎵 悬浮播放器样式 (player.css - 磁吸版)
   ========================================= */

.music-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 280px;
    
    background: var(--header-bg, rgba(255, 255, 255, 0.85)); 
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    
    /* 默认阴影 */
    box-shadow: 0 5px 20px var(--shadow-color, rgba(0,0,0,0.2));
    
    z-index: 9999;
    font-family: 'ZCOOL KuaiLe', cursive; 
    color: var(--text-color, #333);
    
    overflow: visible; 

    /* ✨ 关键改动：Transform 的过渡必须非常短，这样磁吸才跟手 */
    /* Box-shadow 和 border 依然保持慢速过渡，做呼吸感 */
    transition: transform 0.1s ease-out, 
                box-shadow 0.3s ease, 
                border-color 0.3s ease;
    
    /* 性能优化：告诉浏览器这货要动 */
    will-change: transform, box-shadow;
}

/* 注意：删除了 .music-player:hover 的样式，全部由 JS 动态控制 */

/* 2. 拖拽手柄 */
.player-handle {
    padding: 10px 15px;
    background: rgba(0,0,0,0.03);
    cursor: grab;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    user-select: none; 
    border-radius: 15px 15px 0 0;
}
.player-handle:active { cursor: grabbing; }

.player-title { color: var(--accent-pink, #FADADD); }

#toggle-playlist { 
    background: none; border: none; cursor: pointer; 
    font-size: 1.2rem; color: var(--text-color); 
    transition: color 0.3s;
}
#toggle-playlist:hover { color: var(--accent-pink); }

/* 3. 唱片与信息区 */
.player-body { padding: 15px; display: flex; align-items: center; gap: 15px; }

.cover-spin {
    width: 45px; height: 45px; border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-pink), var(--accent-green));
    animation: spin 3s linear infinite;
    animation-play-state: paused;
    flex-shrink: 0;
}
.cover-spin.playing { animation-play-state: running; }
@keyframes spin { 100% { transform: rotate(360deg); } }

.song-info { flex: 1; overflow: hidden; }
#current-song-title {
    font-size: 0.9rem; margin-bottom: 5px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.progress-container {
    height: 4px; background: rgba(0,0,0,0.1); 
    border-radius: 2px; cursor: pointer; margin-bottom: 3px;
    position: relative; 
}
.progress-container::after {
    content: ''; position: absolute; top: -5px; bottom: -5px; left: 0; right: 0;
}

.progress-bar {
    width: 0%; height: 100%; 
    background: var(--accent-green, #B4E4DA); border-radius: 2px;
}
.time-display { font-size: 0.7rem; opacity: 0.6; display: flex; justify-content: space-between; }

/* 4. 底部控制区 */
.player-controls {
    display: flex; 
    align-items: center;
    justify-content: space-around; 
    padding: 10px;
    border-top: 1px solid rgba(0,0,0,0.05);
}
.player-controls button {
    background: none; border: none; cursor: pointer;
    font-size: 1.5rem; color: var(--text-color);
    transition: 0.2s;
}
.player-controls button:hover { color: var(--accent-pink); transform: scale(1.1); }

/* 5. 播放列表 (向上展开) */
.playlist {
    position: absolute;
    bottom: 100%;             
    left: 0;
    width: 100%;
    max-height: 0;            
    opacity: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px 15px 0 0;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.1);
    overflow-y: auto;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: -1;              
    margin-bottom: -10px;     
    padding-bottom: 10px;     
    pointer-events: none;     
}
.playlist.show { 
    max-height: 200px;
    opacity: 1;
    margin-bottom: 0;
    padding-bottom: 0;
    pointer-events: auto; 
}
.playlist li {
    padding: 8px 15px; font-size: 0.85rem; cursor: pointer;
    border-bottom: 1px solid rgba(0,0,0,0.02);
    transition: background 0.2s;
}
.playlist li:hover { background: rgba(0,0,0,0.05); }
.playlist li.active { color: var(--accent-pink); font-weight: bold; }

[data-theme="dark"] .playlist {
    background: rgba(30, 30, 40, 0.95);
    border: 1px solid rgba(255,255,255,0.1);
}

/* 6. 音量旋钮 */
.volume-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-left: 10px;
    cursor: ns-resize; 
}

.knob {
    width: 26px;
    height: 26px;
    background: radial-gradient(circle at 30% 30%, #eee, #ccc);
    border-radius: 50%;
    border: 1px solid #999;
    position: relative;
    transform: rotate(-135deg); 
    
    /* 移除 transition 保证拖动绝对跟手 */
    transition: box-shadow 0.1s linear; 
}

.knob-indicator {
    position: absolute;
    top: 4px; left: 50%;
    transform: translateX(-50%);
    width: 3px; height: 3px;
    background-color: var(--accent-pink, #FADADD);
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(0,0,0,0.5);
}

[data-theme="dark"] .knob {
    background: radial-gradient(circle at 30% 30%, #555, #222);
    border-color: #000;
}

/* ============================
   📱 7. 移动端深度适配 (精致小方块版)
   ============================ */
@media screen and (max-width: 768px) {
    .music-player { 
        /* --- 1. 容器定型：小圆角方块 --- */
        width: 145px;          /* 固定小宽度 */
        height: auto;          /* 高度自适应 */
        
        /* 位置：固定在右下角，单手好按 */
        left: auto;
        right: 20px; 
        bottom: 90px;          /*稍微高一点，避开某些手机的底部横条 */
        
        /* 布局：改为竖向排列 (Column) */
        display: flex;
        flex-direction: column;
        
        border-radius: 24px;   /* 大圆角，类似 iOS 小组件 */
        
        /* 强制重置样式 */
        transform: none !important; 
        box-shadow: 0 8px 25px rgba(0,0,0,0.15) !important;
        margin: 0;
    }

    /* --- 2. 顶部手柄区 --- */
    .player-handle {
        padding: 8px 10px 0 10px; /* 上方留白 */
        justify-content: flex-end; /* 只显示列表按钮，靠右 */
        background: transparent;
        border: none;
    }
    
    /* 隐藏“舜の播放列表”文字，保持方块简洁 */
    .player-title { display: none; }
    
    /* 列表按钮稍微大一点，方便点 */
    #toggle-playlist { font-size: 1.2rem; }

    /* --- 3. 核心内容区 (竖排) --- */
    .player-body { 
        flex-direction: column; /* 上下排列 */
        padding: 5px 10px; 
        gap: 8px; 
        text-align: center;
    }

    /* 唱片变大一点，作为视觉中心 */
    .cover-spin {
        width: 55px; 
        height: 55px; 
        margin: 0 auto; /* 居中 */
        border: 3px solid rgba(255,255,255,0.3); /* 加个光圈更有质感 */
    }

    .song-info { 
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    #current-song-title {
        font-size: 0.8rem;
        margin-bottom: 2px;
        max-width: 120px; /* 限制宽度防止撑开 */
        text-align: center;
    }

    /* 隐藏手机端累赘的进度条和时间，追求极致紧凑 */
    .progress-container, .time-display { display: none; }

    /* --- 4. 底部控制区 --- */
    .player-controls {
        padding: 5px 0 15px 0; /* 下方多留点白 */
        border: none;
        width: 100%;
        justify-content: center; /* 按钮居中 */
        gap: 15px; /* 按钮间距 */
    }
    
    .player-controls button {
        font-size: 1.3rem; 
    }

    /* 手机端隐藏音量旋钮 (直接按手机音量键更好，省空间) */
    .volume-container { display: none; }

    /* --- 5. 列表弹出的适配 --- */
    /* 列表从方块上方弹出来 */
    .playlist {
        width: 200px; /* 列表比播放器宽一点，体验更好 */
        right: 0;     /* 靠右对齐 */
        left: auto;   /* 取消靠左 */
        border-radius: 15px;
        bottom: 110%; /* 稍微离远一点 */
    }
    .playlist.show { max-height: 250px; }
}