/* ============================================
   新功能样式 - 下载、歌单管理、MV播放
   ============================================ */

/* ============================================
   1. 下载功能
   ============================================ */
.download-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
}

.download-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
}

.download-modal-content {
    position: relative;
    width: 400px;
    max-width: 90vw;
    background: var(--canvas-elevated);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.download-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.download-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.download-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.download-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.download-track-info {
    padding: 20px 24px;
    display: flex;
    gap: 16px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
}

.download-track-cover {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

.download-track-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.download-track-details {
    flex: 1;
    min-width: 0;
}

.download-track-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.download-track-artist {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.download-quality-list {
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quality-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.quality-option:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(var(--accent-rgb, 100, 150, 255), 0.3);
}

.quality-option.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.quality-option.disabled:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
}

.quality-option.loading {
    pointer-events: none;
}

.quality-option-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.quality-badge {
    padding: 4px 10px;
    background: rgba(var(--accent-rgb, 100, 150, 255), 0.15);
    color: var(--accent-primary);
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.quality-badge.vip {
    background: linear-gradient(135deg, rgba(255, 200, 50, 0.2), rgba(255, 150, 50, 0.2));
    color: #FFD700;
}

.quality-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.quality-option-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.quality-size {
    font-size: 12px;
    color: var(--text-tertiary);
}

.quality-download-icon {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.quality-option:hover .quality-download-icon {
    color: var(--accent-primary);
}

.quality-loading {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 下载按钮样式 */
.track-action-btn.download-btn:hover {
    color: #22c55e;
    background: rgba(34, 197, 94, 0.15);
}

/* ============================================
   2. 歌单管理功能
   ============================================ */
.playlist-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
}

.playlist-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.playlist-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
}

.playlist-modal-content {
    position: relative;
    width: 480px;
    max-width: 90vw;
    max-height: 80vh;
    background: var(--canvas-elevated);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.playlist-modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.playlist-modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.playlist-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.playlist-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.playlist-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 24px;
}

/* 创建歌单表单 */
.create-playlist-form {
    padding: 16px 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(var(--accent-rgb, 100, 150, 255), 0.5);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 100, 150, 255), 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.form-checkbox span {
    font-size: 14px;
    color: var(--text-secondary);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-subtle);
}

.btn-cancel {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-submit {
    padding: 10px 24px;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-submit:hover {
    filter: brightness(1.1);
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 添加到歌单列表 */
.add-to-playlist-track {
    padding: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-subtle);
}

.add-to-playlist-track img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.add-to-playlist-track-info {
    flex: 1;
    min-width: 0;
}

.add-to-playlist-track-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.add-to-playlist-track-artist {
    font-size: 12px;
    color: var(--text-secondary);
}

.playlist-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.playlist-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.playlist-list-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.playlist-list-item.added {
    background: rgba(var(--accent-rgb, 100, 150, 255), 0.1);
}

.playlist-list-item-cover {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
}

.playlist-list-item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.playlist-list-item-info {
    flex: 1;
    min-width: 0;
}

.playlist-list-item-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-list-item-count {
    font-size: 12px;
    color: var(--text-tertiary);
}

.playlist-list-item-check {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.playlist-list-item-check svg {
    display: none;
}

.playlist-list-item.added .playlist-list-item-check svg {
    display: block;
}

.create-playlist-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px dashed rgba(255, 255, 255, 0.2);
    margin-bottom: 8px;
}

.create-playlist-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(var(--accent-rgb, 100, 150, 255), 0.4);
}

.create-playlist-btn svg {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

.create-playlist-btn span {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 我的歌单管理页面 */
.my-playlists-section {
    padding: var(--space-lg);
}

.my-playlists-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.my-playlists-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.create-playlist-header-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--accent-primary);
    border: none;
    border-radius: 20px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.create-playlist-header-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.create-playlist-header-btn svg {
    width: 18px;
    height: 18px;
}

.my-playlists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-lg);
}

.my-playlist-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.my-playlist-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.my-playlist-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
}

.my-playlist-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.my-playlist-card:hover .my-playlist-card-cover img {
    transform: scale(1.05);
}

.my-playlist-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s;
}

.my-playlist-card:hover .my-playlist-card-overlay {
    opacity: 1;
}

.my-playlist-card-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    border: none;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.my-playlist-card-btn:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

.my-playlist-card-btn.play-btn {
    width: 48px;
    height: 48px;
    background: var(--accent-primary);
}

.my-playlist-card-btn.delete-btn:hover {
    background: #ef4444;
}

.my-playlist-card-info {
    padding: var(--space-md);
}

.my-playlist-card-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.my-playlist-card-count {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ============================================
   3. MV播放器
   ============================================ */
.mv-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
}

.mv-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mv-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
}

.mv-modal-content {
    position: relative;
    width: 90vw;
    max-width: 1200px;
    background: var(--canvas-deep);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.6);
}

.mv-header {
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.5);
}

.mv-header h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mv-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.mv-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.mv-video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
}

.mv-video {
    width: 100%;
    height: 100%;
    outline: none;
}

.mv-quality-selector {
    position: absolute;
    bottom: 60px;
    right: 16px;
    display: flex;
    gap: 8px;
}

.mv-quality-btn {
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.mv-quality-btn:hover,
.mv-quality-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.mv-info {
    padding: 20px 24px;
    background: rgba(0, 0, 0, 0.3);
}

.mv-info-row {
    display: flex;
    gap: 24px;
    margin-bottom: 12px;
}

.mv-info-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.mv-info-item svg {
    width: 16px;
    height: 16px;
}

.mv-description {
    font-size: 13px;
    color: var(--text-tertiary);
    line-height: 1.6;
    max-height: 60px;
    overflow: hidden;
}

/* ============================================
   4. 歌曲右键菜单/更多操作
   ============================================ */
.track-context-menu {
    position: fixed;
    z-index: 1100;
    min-width: 200px;
    background: var(--canvas-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
    padding: 8px 0;
    display: none;
}

.track-context-menu.active {
    display: block;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    cursor: pointer;
    transition: all 0.15s;
}

.context-menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.context-menu-item svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.context-menu-item span {
    font-size: 14px;
    color: var(--text-primary);
}

.context-menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.context-menu-item.danger svg,
.context-menu-item.danger span {
    color: #ef4444;
}

.context-menu-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 8px 0;
}

/* ============================================
   5. 侧边栏歌单列表
   ============================================ */
.sidebar-playlists {
    padding: 0 var(--space-md);
    margin-top: var(--space-lg);
}

.sidebar-playlists-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-sm);
    margin-bottom: var(--space-sm);
}

.sidebar-playlists-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-tertiary);
}

.sidebar-create-playlist-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-tertiary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.sidebar-create-playlist-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-playlist-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.sidebar-playlist-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-playlist-item.active {
    background: var(--accent-primary-muted);
}

.sidebar-playlist-cover {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.sidebar-playlist-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar-playlist-info {
    flex: 1;
    min-width: 0;
}

.sidebar-playlist-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-playlist-count {
    font-size: 11px;
    color: var(--text-tertiary);
}

/* 添加到歌单按钮样式 */
.track-action-btn.add-to-playlist-btn:hover {
    color: var(--accent-primary);
    background: rgba(var(--accent-rgb, 100, 150, 255), 0.15);
}