/* 音乐播放器基础样式 */
.music-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 48px 10px 16px; /* 右侧留足 48px 的内边距，给悬浮平行按钮腾出视觉坑位 */
    background: rgba(30, 33, 40, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 1000;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease;
    max-width: 320px;
    transform: translateX(0);
    opacity: 1;
}
.music-player.show-progress {
    padding-bottom: 22px;
    border-radius: 24px;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease, padding-bottom 0.3s ease, border-radius 0.3s ease;
}

/* ================= 纯 CSS 独立控制动画逻辑 ================= */
/* 当开关被勾选（折叠隐藏）时：大胶囊平滑移出右侧屏幕 */
#musicToggleCheckbox:checked ~ .music-player {
    transform: translateX(calc(100% + 30px));
    opacity: 0;
    pointer-events: none;
}

/* 当开关被勾选（折叠隐藏）时：留在原地的独立按钮自动向右靠拢，缩为一个精致的圆形常驻小盲点 */
#musicToggleCheckbox:checked ~ .music-standalone-toggle-btn {
    right: 20px !important;
    background: rgba(30, 33, 40, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    width: 32px !important;
    height: 32px !important;
    border-radius: 50% !important;
}

/* 按钮内独立小箭头的交替状态渲染 */
.music-standalone-toggle-btn .icon-unfold { display: none; }
.music-standalone-toggle-btn .icon-fold { display: block; }

#musicToggleCheckbox:checked ~ .music-standalone-toggle-btn .icon-unfold { display: block; }
#musicToggleCheckbox:checked ~ .music-standalone-toggle-btn .icon-fold { display: none; }
/* ========================================================== */

.music-player:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}
#musicToggleCheckbox:checked ~ .music-player:hover {
    transform: translateX(calc(100% + 30px)) translateY(0);
}

.music-cover {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
}
.music-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.music-cover img.loaded {
    opacity: 1;
}
.music-cover-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.3);
}
.music-cover-placeholder svg {
    width: 20px;
    height: 20px;
}

.music-player.playing .music-cover img {
    animation: musicCoverSpin 10s linear infinite;
}
@keyframes musicCoverSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.music-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}
.music-title {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.music-artist {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.music-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.music-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
    flex-shrink: 0;
}
.music-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}
.music-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.music-btn svg {
    width: 16px;
    height: 16px;
}

.music-play-btn {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.music-play-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}
.music-play-btn svg {
    width: 18px;
    height: 18px;
}

/* 外部完全独立的悬浮控制按钮样式 */
.music-standalone-toggle-btn {
    position: fixed !important;
    bottom: 35px !important; /* PC 端完美对齐 */
    right: 30px !important;  
    width: 24px !important;
    height: 32px !important;
    border: 1px solid transparent !important;
    background: transparent !important;
    color: rgba(255, 255, 255, 0.4) !important;
    cursor: pointer !important;
    border-radius: 4px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 1010 !important; /* 确保盖在播放器上面 */
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important;
    padding: 0 !important;
    user-select: none !important;
    -webkit-user-select: none !important;
}
.music-standalone-toggle-btn:hover {
    color: #fff !important;
}
.music-standalone-toggle-btn svg {
    width: 14px !important;
    height: 14px !important;
    pointer-events: none !important;
}

/* 进度条 */
.music-progress-wrap {
    position: absolute;
    left: 16px;
    right: 48px; /* 进度条右侧也同步收缩，避免覆盖在独立按钮的触控层下方 */
    bottom: 9px;
    height: 6px;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    pointer-events: none;
    z-index: 20;
}
.music-player.show-progress .music-progress-wrap {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}
.music-progress-bar {
    height: 100%;
    width: 0%;
    min-width: 6px;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 999px;
    transition: width 0.25s linear;
    position: relative;
}
.music-progress-bar::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 4px rgba(0,0,0,.3);
    transition: transform 0.2s ease;
}
.music-player.show-progress .music-progress-bar::after {
    transform: translateY(-50%) scale(1);
}

/* ================= 核心：移动端响应式精准适配 ================= */
@media (max-width: 480px) {
    .music-player {
        bottom: 10px !important;
        right: 10px !important;
        left: 10px !important;
        max-width: none !important;
        padding: 8px 44px 8px 12px !important; /* 手机端微调右内边距 */
        gap: 10px !important;
    }
    
    /* 手机端勾选折叠时大胶囊滑出屏幕 */
    #musicToggleCheckbox:checked ~ .music-player {
        transform: translateX(calc(100% + 20px)) !important;
    }
    
    /* 手机端展开时，按钮定位在右下角大胶囊的内部边缘 */
    .music-standalone-toggle-btn {
        bottom: 12px !important; /* 手机端高度对齐 */
        right: 20px !important; /* 手机端靠右距离 */
    }
    
    /* 手机端折叠隐藏后，变成一个小悬浮圆圈靠在屏幕最右侧 */
    #musicToggleCheckbox:checked ~ .music-standalone-toggle-btn {
        bottom: 10px !important;
        right: 10px !important;
        width: 36px !important;
        height: 36px !important;
        background: rgba(30, 33, 40, 0.95) !important;
    }
}