/**
 * KVideo - 主样式表
 * KVideo - Main Stylesheet
 */

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text-color: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #475569;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
}

body {
    font-family: Arial, 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    padding-top: 90px;
}

/* 统一全站字体 */
body,
input,
button,
select,
textarea {
    font-family: Arial, 'Microsoft YaHei', sans-serif;
    font-size: 14px;
}

/* 统一标题字体 */
h1, h2, h3, h4, h5, h6 {
    font-family: Arial, 'Microsoft YaHei', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-hover);
}

/* 导航栏 */
.navbar {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    padding: 1rem 2rem;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    z-index: 1000 !important;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar,
.navbar-menu a {
    font-size: 16px;
    font-weight: 500;
}

.navbar-brand {
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
}

.navbar-brand a {
    font-size: 30px !important;
    font-weight: bold !important;
    color: var(--text-color);
    line-height: 1.2 !important;
    display: inline-block !important;
    text-decoration: none !important;
}

.navbar-brand a span,
.navbar-brand span {
    font-size: 30px !important;
    font-weight: bold !important;
}

.navbar-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.navbar-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: var(--primary-color);
    color: #fff;
}

.navbar-menu {
    display: flex;
    gap: 1.5rem;
}

.navbar-menu a {
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--text-color);
    background: var(--bg-card);
}

.btn-login,
.btn-logout {
    background: var(--primary-color);
    color: white !important;
}

/* 统一按钮样式 */
button,
.btn {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

button {
    background: var(--primary-color);
    color: #fff;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
}

.btn-login:hover,
.btn-logout:hover {
    background: var(--primary-hover);
}

/* 搜索框 */
.search-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.search-box {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.search-box input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-color);
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-btn {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.source-selector {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.source-selector label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.source-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.source-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.source-checkbox input[type="checkbox"] {
    cursor: pointer;
}

/* 主内容区 */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: calc(100vh - 300px);
}

/* 视频网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.video-card {
    background: var(--bg-card);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.video-card a {
    display: block;
    color: inherit;
    text-decoration: none;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.video-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.video-card .video-info {
    padding: 1rem;
}

.video-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card .video-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.video-card .video-rate {
    font-size: 0.85rem;
    color: var(--warning-color);
    font-weight: bold;
}

/* 合并后的视频卡片 */
.merged-card {
    background: var(--bg-card);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.merged-card .video-info {
    padding: 1rem;
}

.merged-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.merged-card .video-remarks {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* 源标签 */
.source-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.source-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    transition: all 0.3s;
}

.source-tag:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-delete {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card:hover .btn-delete {
    opacity: 1;
}

.btn-delete:hover {
    background: var(--danger-color);
}

/* 热门推荐 */
.featured-section {
    margin-bottom: 3rem;
}

.featured-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.featured-header h2 {
    font-size: 1.5rem;
    color: var(--text-color);
}

.featured-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.5rem 1.5rem;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.tab-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.loading-more {
    text-align: center;
    padding: 2rem;
}

/* 页面标题 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.btn-clear {
    padding: 0.5rem 1rem;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
}

.btn-clear:hover {
    background: #dc2626;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: white !important;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    display: inline-block;
    text-decoration: none;
}

.btn-primary:hover {
    background: var(--primary-hover);
    color: white !important;
}

/* 加载中 */
.loading {
    text-align: center;
    padding: 3rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* 无结果 */
.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    margin-top: 3rem;
}

/* 响应式设计 - 移动端适配 */
@media (max-width: 768px) {
    /* 导航栏优化 */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        padding: 0.75rem 1rem;
        flex-direction: column;
        gap: 0.75rem;
        min-height: 70px;
    }
    
    body {
        padding-top: 110px;
    }
    
    .navbar-brand {
        width: 100%;
        text-align: center;
    }
    
    .navbar-brand a {
        font-size: 20px !important;
    }
    
    .navbar-brand span {
        font-size: 20px !important;
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
    }
    
    .navbar-menu a {
        padding: 0.3rem 0.5rem;
        font-size: 0.7rem;
    }
    
    /* 搜索框优化 */
    .search-container {
        padding: 0 1rem;
        margin: 1rem auto;
    }
    
    .search-box {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-box input {
        width: 100%;
        font-size: 16px; /* 防止 iOS 自动缩放 */
    }
    
    .search-btn {
        width: 100%;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .source-selector {
        padding: 0.75rem;
    }
    
    .source-checkboxes {
        gap: 0.5rem;
    }
    
    .source-checkbox {
        font-size: 0.9rem;
    }
    
    /* 主内容区优化 */
    .main-content {
        padding: 1rem;
    }
    
    /* 视频网格优化 */
    .video-grid {
        grid-template-columns: repeat(2, 1fr); /* 两列布局 */
        gap: 1rem;
    }
    
    .video-card {
        border-radius: 0.5rem;
    }
    
    .video-card img {
        height: 225px; /* 适应小屏幕 */
    }
    
    .video-card .video-info {
        padding: 0.75rem;
    }
    
    .video-card h3 {
        font-size: 0.85rem;
        line-height: 1.3;
    }
    
    .video-card .video-date,
    .video-card .video-rate {
        font-size: 0.75rem;
    }
    
    /* 合并卡片优化 */
    .merged-card .video-info {
        padding: 0.75rem;
    }
    
    .merged-card h3 {
        font-size: 0.85rem;
    }
    
    .merged-card .video-remarks {
        font-size: 0.75rem;
    }
    
    /* 源标签优化 */
    .source-tags {
        gap: 0.375rem;
    }
    
    .source-tag {
        padding: 0.2rem 0.5rem;
        font-size: 0.7rem;
    }
    
    /* 删除按钮优化 */
    .btn-delete {
        width: 1.5rem;
        height: 1.5rem;
        font-size: 1rem;
    }
    
    /* 特色区块优化 */
    .featured-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .featured-header h2 {
        font-size: 1.25rem;
    }
    
    .featured-tabs {
        flex-wrap: wrap;
        gap: 0.375rem;
    }
    
    .tab-btn {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }
    
    /* 页面头部优化 */
    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .btn-clear {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    /* 空状态优化 */
    .empty-state {
        padding: 3rem 1rem;
    }
    
    .empty-state p {
        font-size: 1rem;
    }
    
    .btn-primary {
        width: 100%;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    /* 加载更多优化 */
    .loading-more {
        padding: 1.5rem;
    }
    
    /* 页脚优化 */
    .footer {
        padding: 1.5rem 1rem;
        font-size: 0.9rem;
    }
    
    /* 管理页面移动端优化 */
    .settings-container {
        padding: 1rem;
    }
    
    .settings-container h1 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .type-selector {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .type-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .tab-btn {
        padding: 10px 18px;
        font-size: 13px;
    }
    
    .cache-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .cache-stat-number {
        font-size: 28px;
    }
    
    .cache-stat-card h3 {
        font-size: 13px;
    }
    
    .cache-stat-label {
        font-size: 11px;
    }
    
    .cache-section h2 {
        font-size: 18px;
    }
    
    .cache-type-group h3 {
        font-size: 16px;
    }
    
    .cache-tags-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .cache-tag-count {
        font-size: 20px;
    }
    
    .cache-data-table {
        font-size: 13px;
        overflow-x: auto;
        display: block;
    }
    
    .cache-data-table thead {
        display: none;
    }
    
    .cache-data-table tbody {
        display: block;
    }
    
    .cache-data-table tr {
        display: block;
        margin-bottom: 10px;
        padding: 10px;
        background: var(--bg-secondary);
        border-radius: 8px;
    }
    
    .cache-data-table td {
        display: block;
        padding: 5px 0;
        border: none;
    }
    
    #cpuValue {
        font-size: 36px;
    }
    
    .monitor-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .monitor-value {
        font-size: 24px;
    }
    
    .theme-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .theme-preview {
        height: 80px;
    }
    
    .theme-name {
        font-size: 12px;
    }
    
    .theme-desc {
        font-size: 11px;
    }
    
    .source-item {
        padding: 15px;
    }
    
    .source-item h4 {
        font-size: 16px;
    }
    
    .source-item p {
        font-size: 14px;
    }
    
    /* 首页移动端优化 - 参考 xt868.xyz 样式 */
    .tags-container {
        padding: 8px;
        margin-bottom: 12px;
    }
    
    .tags-title {
        font-size: 0.7rem;
        margin-bottom: 8px;
        white-space: nowrap;
        color: var(--text-color);
    }
    
    .tags-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
        padding-bottom: 3px;
    }
    
    .tag-item {
        padding: 6px 12px;
        font-size: 0.7rem !important;
        white-space: nowrap;
        text-align: center;
        background: var(--bg-card);
        border-radius: 4px;
        color: var(--text-secondary);
        transition: all 0.2s;
    }
    
    .tag-item:hover {
        background: var(--primary-color);
        color: #fff;
    }
    
    /* 类型选择器优化 */
    .type-selector {
        display: flex;
        gap: 8px;
        margin-bottom: 12px;
        margin-top: 8px;
        padding: 8px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        justify-content: flex-start;
        scrollbar-width: none;
        background: var(--bg-secondary);
        border-radius: 8px;
    }
    
    .type-selector::-webkit-scrollbar {
        display: none;
    }
    
    .type-btn {
        padding: 8px 16px;
        font-size: 0.7rem !important;
        white-space: nowrap;
        flex-shrink: 0;
        background: var(--bg-card);
        border-radius: 6px;
        color: var(--text-secondary);
        border: 1px solid var(--border-color);
        transition: all 0.2s;
    }
    
    .type-btn.active {
        background: var(--primary-color);
        color: #fff;
        border-color: var(--primary-color);
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    }
    
    .type-btn:hover {
        background: var(--bg-secondary);
        color: var(--text-color);
        transform: translateY(-1px);
    }
    
    /* 电影网格优化 - 移动端 2 列布局 */
    .movies-grid,
    .video-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        padding: 5px !important;
    }
    
    .movie-card,
    .video-card {
        border-radius: 6px;
        overflow: hidden;
        background: var(--bg-card);
        display: flex;
        flex-direction: column;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }
    
    .movie-card:hover,
    .video-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    
    .movie-poster,
    .video-poster {
        width: 100%;
        aspect-ratio: 2/3;
        object-fit: cover;
        flex-shrink: 0;
    }
    
    .movie-info,
    .video-info {
        padding: 6px;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 4px;
        min-height: 50px;
    }
    
    .movie-title,
    .video-title {
        font-size: 12px;
        line-height: 1.3;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        min-height: 32px;
        margin: 0;
        word-break: break-word;
        color: var(--text-color);
    }
    
    .video-date,
    .video-rate,
    .rating-badge {
        font-size: 10px;
        padding: 2px 4px;
        white-space: nowrap;
        border-radius: 3px;
    }
    
    .rating-badge {
        background: var(--warning-color);
        color: #fff;
    }
    
    .loading {
        padding: 40px 15px;
        text-align: center;
    }
    
    .spinner {
        width: 40px;
        height: 40px;
        margin: 0 auto;
    }
    
    /* 搜索页面优化 */
    .search-results {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 5px;
    }
    
    .video-meta {
        font-size: 12px;
        line-height: 1.4;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }
    
    .source-tag {
        font-size: 10px;
        padding: 3px 6px;
        white-space: nowrap;
        display: inline-block;
    }
    
    .loading {
        padding: 40px 15px;
        font-size: 14px;
    }
    
    .loading-spinner {
        width: 35px;
        height: 35px;
    }
    
    .no-results {
        padding: 40px 15px;
        font-size: 14px;
        text-align: center;
    }
    
    /* 通用文本溢出处理 */
    h3, h4, h5, .title, .name {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    /* 确保所有按钮文字不换行 */
    button, .btn {
        white-space: nowrap;
    }
    
    /* 表格移动端优化 */
    table {
        font-size: 13px;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    th, td {
        padding: 8px 5px;
        word-break: break-word;
    }
}

/* 超小屏幕优化（小于 480px） */
@media (max-width: 480px) {
    body {
        padding-top: 120px;
    }
    
    .navbar {
        padding: 0.5rem 1rem;
    }
    
    .navbar-brand a {
        font-size: 1rem;
    }
    
    .navbar-menu a {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .tags-title {
        font-size: 0.7rem;
    }
    
    .tag-item {
        padding: 5px 10px;
        font-size: 0.7rem !important;
    }
    
    .tags-list {
        gap: 4px;
    }
    
    .type-selector {
        gap: 6px;
        padding: 6px;
        background: var(--bg-secondary);
        border-radius: 6px;
    }
    
    .type-btn {
        padding: 6px 12px;
        font-size: 0.7rem !important;
        border-radius: 4px;
    }
    
    .movies-grid,
    .video-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 6px !important;
        padding: 3px !important;
    }
    
    .movie-card,
    .video-card {
        border-radius: 4px;
    }
    
    .movie-poster,
    .video-poster {
        border-radius: 4px 4px 0 0;
    }
    
    .movie-info,
    .video-info {
        padding: 4px;
        gap: 3px;
        min-height: 45px;
    }
    
    .movie-title,
    .video-title {
        font-size: 11px;
        line-height: 1.25;
        min-height: 28px;
    }
    
    .video-date,
    .video-rate,
    .rating-badge {
        font-size: 9px;
        padding: 1px 3px;
    }
}

/* ========== 管理页面专用样式 ========== */
.settings-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.settings-container h1 {
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--text-color);
}

/* 标签页按钮样式 */
.tab-btn {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-bottom: none;
    color: var(--text-secondary);
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: var(--bg-hover);
    color: var(--text-color);
}

.tab-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 设置区块 */
.settings-section {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 0.75rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.settings-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
    color: var(--primary-color);
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-color);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 按钮样式 */
.btn-primary {
    background: var(--primary-color);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* 主题网格 */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.theme-card {
    background: var(--bg-card);
    padding: 15px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.theme-preview {
    width: 100%;
    height: 100px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.theme-name {
    font-size: 14px;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}

.theme-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 缓存统计 */
.cache-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.cache-stat-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: transform 0.3s ease;
}

.cache-stat-card:hover {
    transform: translateY(-5px);
}

.cache-stat-card.primary {
    border-color: var(--primary-color);
}

.cache-stat-card h3 {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.cache-stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}

.cache-stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 缓存区块 */
.cache-section {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin: 30px 0;
}

.cache-section h2 {
    color: var(--primary-color);
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

/* 缓存类型分组 */
.cache-type-group {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
}

.cache-type-group h3 {
    color: var(--primary-color);
    font-size: 18px;
    margin-bottom: 15px;
}

/* 缓存标签网格 */
.cache-tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.cache-tag-card {
    background: var(--bg-card);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.cache-tag-name {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.cache-tag-count {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}

.cache-tag-unit {
    font-size: 13px;
    color: var(--text-secondary);
}

.cache-tag-info {
    font-size: 11px;
    color: var(--text-secondary);
}

/* 缓存数据表格 */
.cache-data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}

.cache-data-table th,
.cache-data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.cache-data-table th {
    background: var(--bg-secondary);
    color: var(--primary-color);
    font-weight: 600;
}

.cache-data-table tr:hover {
    background: var(--bg-hover);
}

.cache-data-table .monospace {
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

/* 豆瓣标签管理 */
.type-selector {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.type-btn {
    padding: 12px 30px;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid rgba(59, 130, 246, 0.3);
    color: var(--text-secondary);
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.type-btn.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
    color: #fff;
}

/* 系统监控 */
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.monitor-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
}

.monitor-card h3 {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.monitor-value {
    font-size: 32px;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}

.monitor-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 视频源管理 */
.source-item {
    background: var(--bg-card);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

.source-item h4 {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.source-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

/* 删除按钮 */
.btn-delete {
    background: var(--danger-color);
    color: #fff;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-delete:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* 成功提示 */
.success-message {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--success-color);
    margin-bottom: 20px;
}

/* 错误提示 */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--danger-color);
    margin-bottom: 20px;
}

/* 平板优化（481px - 768px） */
@media (min-width: 481px) and (max-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
    
    .video-card img {
        height: 240px;
    }
}