/**
 * 后台管理系统样式文件 - 现代化设计 + 性能优化
 * 
 * @author: 商家助手开发团队
 * @version: 2.1.0
 */

/* 页面加载优化 */
.page-loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.page-loading.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #475569;
    border-top: 3px solid #8b5cf6;
    border-radius: 50%;
    animation: loading-spin 1s linear infinite;
}

@keyframes loading-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 搜索结果样式 */
.search-results {
    position: absolute;
    top: 100%;
    right: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.25rem 0;
}

/* 排序指示器 */
.sort-indicator {
    margin-left: 0.5rem;
    font-size: 0.75rem;
    color: var(--accent-purple);
    opacity: 0.8;
}

/* 性能优化：减少重绘 */
.stat-card,
.chart-container,
.data-card {
    will-change: transform;
    transform: translateZ(0);
}

/* SPA页面切换动画 */
#mainContent {
    transition: opacity 0.3s ease;
}

#mainContent.loading {
    opacity: 0.3;
    pointer-events: none;
}

/* 错误消息样式 */
.error-message {
    background: var(--bg-secondary);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    margin: 2rem 0;
}

/* 骨架屏样式 */
.skeleton {
    background: linear-gradient(90deg, 
        var(--bg-tertiary) 25%, 
        var(--bg-secondary) 50%, 
        var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-text.medium {
    width: 80%;
}

.skeleton-text.long {
    width: 100%;
}

/* CSS Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* CSS Variables for Theme */
:root {
    /* Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #475569;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --hover-bg: rgba(59, 130, 246, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --hover-bg: rgba(59, 130, 246, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Base Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Admin Container */
.admin-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 1.5rem 1rem;
    overflow-y: auto;
}

.nav-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: var(--hover-bg);
}

.nav-item.active {
    background: var(--accent-blue);
}

.nav-item.active .nav-link {
    color: white;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    background: var(--bg-primary);
    min-height: 100vh;
}

/* Topbar */
.topbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.breadcrumb-icon {
    width: 28px;
    height: 28px;
    background: var(--accent-purple);
    color: white;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.breadcrumb-path {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.breadcrumb-item:hover {
    color: var(--text-primary);
}

.breadcrumb-separator {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Topbar Actions */
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-btn {
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--hover-bg);
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Switcher */
.theme-switcher {
    position: relative;
}

.theme-toggle {
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--hover-bg);
}

.theme-toggle-inner {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-primary);
    border-radius: 50%;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .theme-toggle-inner {
    transform: translateX(18px);
}

.sun-icon,
.moon-icon {
    position: absolute;
    width: 12px;
    height: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
}

[data-theme="light"] .sun-icon {
    opacity: 1;
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    margin-left: 1rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.user-dropdown {
    position: relative;
}

.dropdown-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.dropdown-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.user-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

/* Content Area */
.content {
    padding: 2rem;
}

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.alert-icon {
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
    font-size: 0.875rem;
}

.alert-close {
    background: none;
    border: none;
    color: currentColor;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: opacity 0.2s ease;
}

.alert-close:hover {
    opacity: 0.7;
}

/* Dashboard Styles */
.dashboard {
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-title h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.dashboard-title p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.date-filter {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.filter-tabs {
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px;
}

.filter-tab {
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.filter-tab.active {
    background: var(--accent-blue);
    color: white;
}

.date-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-picker input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.refresh-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(188px, 1fr));
    gap: .5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.views {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.stat-icon.visitors {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.stat-icon.ads {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.stat-icon.clicks {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.stat-icon.articles {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
}

.stat-content {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-value {
    margin-bottom: 0.5rem;
}

.number,
.stats-number {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

/* 统计卡片进度条 */
.stat-progress {
    height: 4px;
    background: rgba(156, 163, 175, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-bar {
    height: 100%;
    background: var(--accent-blue);
    border-radius: 2px;
    transition: width 0.6s ease;
}

/* 不同卡片的进度条颜色 */
.stat-card:nth-child(1) .progress-bar {
    background: var(--accent-blue);
}

.stat-card:nth-child(2) .progress-bar {
    background: var(--accent-green);
}

.stat-card:nth-child(3) .progress-bar {
    background: var(--accent-orange);
}

.stat-card:nth-child(4) .progress-bar {
    background: var(--accent-red);
}

.stat-card:nth-child(5) .progress-bar {
    background: var(--accent-purple);
}

/* 趋势显示 */
.stat-trend {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.stat-trend .trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
}

.stat-trend .trend.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.stat-trend .trend.negative {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.stat-trend .trend svg {
    width: 10px;
    height: 10px;
}

/* Charts Section */
.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.chart-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-legend {
    display: flex;
    gap: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.legend-color.views {
    background: var(--accent-blue);
}

.legend-color.visitors {
    background: var(--accent-green);
}

.legend-color.impressions {
    background: var(--accent-orange);
}

.legend-color.clicks {
    background: var(--accent-red);
}

.chart-body {
    padding: 1.5rem;
    height: 300px;
}

/* Data Section */
.data-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.data-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.data-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.data-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.data-body {
    padding: 1.5rem;
}

/* Ranking List */
.ranking-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.ranking-item:hover {
    background: var(--hover-bg);
}

.rank-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-blue);
    min-width: 24px;
}

.rank-content {
    flex: 1;
}

.rank-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.rank-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.rank-chart {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-green);
}

/* Search Stats */
.search-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.search-source {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 120px;
}

.source-icon {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.source-icon.baidu {
    background: #2932e1;
}

.source-icon.google {
    background: #4285f4;
}

.source-icon.sogou {
    background: #fb8500;
}

.search-source span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.search-progress {
    flex: 1;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.search-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 48px;
    text-align: right;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .charts-section {
        grid-template-columns: 1fr;
    }
    
    .data-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .topbar {
        padding: 1rem;
    }
    
    .content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-filter {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .filter-tabs {
        order: 2;
    }
    
    .date-picker {
        order: 1;
        justify-content: flex-end;
    }
}

@media (max-width: 640px) {
    .user-info {
        display: none;
    }
    
    .chart-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .chart-legend {
        justify-content: center;
    }
    
    .ranking-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .rank-number {
        align-self: flex-start;
    }
}

/* Loading Animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading {
    animation: spin 1s linear infinite;
}

/* Smooth Transitions */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ==================== 新增页面样式 ==================== */

/* 页面头部样式 */
.page-header {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.page-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-icon {
    font-size: 2rem;
}

.page-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-description {
    color: var(--text-muted);
    font-size: 1rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

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

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

.btn-purple {
    background: var(--accent-purple);
    color: white;
    border: 1px solid var(--accent-purple);
}

.btn-purple:hover {
    background: #7c3aed;
    border-color: #7c3aed;
    transform: translateY(-1px);
}

/* 横向统计卡片布局 */
.stats-grid-horizontal {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* 彩色图标样式 */
.stat-icon-purple {
    background: linear-gradient(135deg, var(--accent-purple), #a855f7);
    color: white;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon-green {
    background: linear-gradient(135deg, var(--accent-green), #059669);
    color: white;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon-orange {
    background: linear-gradient(135deg, var(--accent-orange), #d97706);
    color: white;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon-red {
    background: linear-gradient(135deg, var(--accent-red), #dc2626);
    color: white;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 统计卡片更新 */
.stat-icon.total {
    background: linear-gradient(135deg, var(--accent-purple), #a855f7);
}

.stat-icon.published {
    background: linear-gradient(135deg, var(--accent-green), #059669);
}

.stat-icon.draft {
    background: linear-gradient(135deg, var(--accent-orange), #d97706);
}

.stat-icon.pending {
    background: linear-gradient(135deg, var(--accent-red), #dc2626);
}

.stat-icon.parent {
    background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
}

.stat-icon.children {
    background: linear-gradient(135deg, var(--accent-green), #047857);
}

/* 搜索和筛选区域 */
.filter-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-box svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filter-select {
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
    min-width: 120px;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* 内容区域 */
.content-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.section-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.section-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 数据表格 */
.data-table {
    width: 100%;
}

.table-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr 1.5fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 1rem 2rem;
    transition: background 0.2s ease;
}

.table-body .table-row {
    border-bottom: 1px solid var(--border-color);
}

.table-body .table-row:hover {
    background: var(--hover-bg);
}

.table-cell {
    font-size: 0.875rem;
}

.table-header .table-cell {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

/* 文章标题 */
.post-title {
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

/* 徽章样式 */
.category-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.published {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.status-badge.draft {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.status-badge.pending {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.view-count {
    color: var(--text-muted);
    font-weight: 500;
}

/* 标签容器 */
.tags-container {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
    border-radius: 4px;
    font-size: 0.625rem;
    font-weight: 500;
}

/* 操作下拉菜单 */
.action-dropdown {
    position: relative;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: none;
    border: none;
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    min-width: 150px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.dropdown-item.delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

/* 分类管理特有样式 */
.categories-tree {
    padding: 1rem;
}

.category-item {
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: all 0.2s ease;
}

.category-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.category-content:hover {
    background: var(--hover-bg);
    border-color: var(--accent-blue);
}

.category-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.category-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.category-toggle:hover {
    background: var(--hover-bg);
}

.toggle-icon {
    transition: transform 0.2s ease;
}

.category-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.category-icon.parent {
    background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
    color: white;
}

.category-icon.child {
    background: linear-gradient(135deg, var(--accent-green), #047857);
    color: white;
}

.category-details {
    flex: 1;
}

.category-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.category-description {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.category-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.post-count {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.category-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-actions .action-btn {
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
}

.category-actions .action-btn:hover {
    background: var(--accent-blue);
    color: white;
}

/* 子分类样式 */
.children-categories {
    margin-left: 2rem;
    margin-top: 0.5rem;
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
}

.child-category .category-content {
    background: var(--bg-secondary);
}

/* 响应式设计扩展 */
@media (max-width: 1024px) {
    .table-row {
        grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr 1fr;
        gap: 0.5rem;
        padding: 1rem;
        font-size: 0.8rem;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 1.5rem;
    }
    
    .stats-grid-horizontal {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .table-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .table-header {
        display: none;
    }
    
    .table-cell {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .table-cell:before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-secondary);
        text-transform: uppercase;
        font-size: 0.75rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .category-content {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .category-info {
        justify-content: center;
    }
    
    .children-categories {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        border-top: 2px solid var(--border-color);
        margin-top: 1rem;
        padding-top: 1rem;
    }
}

/* 标签管理特有样式 */
.tag-name-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tag-preview {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
}

.tag-name {
    font-weight: 500;
    color: var(--text-primary);
}

.color-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-sample {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.color-code {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.tag-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.usage-count {
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.usage-count.high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.usage-count.medium {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.usage-count.low {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-muted);
}

/* 兼容旧样式 */
.usage-count.hot {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.usage-count.normal {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.usage-count.unused {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-muted);
}

.last-used {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.never-used {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.875rem;
}

/* 广告管理特有样式 */
.ads-table-row {
    grid-template-columns: 2fr 1fr 1.2fr 1fr 1fr 1fr 0.8fr 1.2fr 1fr;
}

.ad-title {
    font-weight: 500;
    color: var(--text-primary);
}

.ad-type-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.ad-type-banner {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.ad-type-sidebar {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.ad-type-content {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.ad-type-brand {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
}

.ad-type-promotion {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.ad-position {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: 'Courier New', monospace;
}

.metric-value {
    font-weight: 600;
    color: var(--text-primary);
}

.ctr-value {
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.ctr-value.high {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.ctr-value.medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.ctr-value.low {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.expires-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.expires-date.expired {
    color: var(--accent-red);
    font-weight: 500;
}

.expires-date.expiring-soon {
    color: var(--accent-orange);
    font-weight: 500;
}

.no-expiry {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.875rem;
}

.status-badge.expired {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.status-badge.paused {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

/* 设置页面特有样式 */
.settings-tabs {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.tab-nav {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}

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

.tab-btn.active {
    background: var(--bg-secondary);
    color: var(--accent-purple);
    border-bottom-color: var(--accent-purple);
}

.tab-content {
    display: none;
    padding: 2rem;
}

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

.settings-section {
    margin-bottom: 2rem;
}

.section-header {
    margin-bottom: 1.5rem;
}

.section-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
}

.section-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

.settings-form {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

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

.form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.switch-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--border-color);
    transition: 0.2s;
    border-radius: 24px;
}

.switch-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    transition: 0.2s;
    border-radius: 50%;
}

.switch input:checked + .switch-slider {
    background: var(--accent-purple);
}

.switch input:checked + .switch-slider:before {
    transform: translateX(20px);
}

.switch-content {
    flex: 1;
}

.switch-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    margin-bottom: 0.25rem;
}

.switch-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--accent-red);
}

.alert-icon {
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
    font-weight: 500;
}

.alert-close {
    background: none;
    border: none;
    color: currentColor;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.alert-close:hover {
    background: rgba(0, 0, 0, 0.1);
}

/* 文章列表页面样式 */
.posts-management {
    padding: 1.5rem;
}

.content-filters {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.filter-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.content-table-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.content-table {
    width: 100%;
    border-collapse: collapse;
}

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

.content-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.content-table tbody tr:hover {
    background: var(--hover-bg);
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-wrapper input[type="checkbox"] {
    margin: 0;
    margin-right: 0.5rem;
}

.title-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.title-link:hover {
    color: var(--accent-blue);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 4px;
    margin-left: 0.5rem;
}

.badge-featured {
    background: var(--accent-purple);
    color: white;
}

.category-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 12px;
    font-size: 0.75rem;
}

.views-count {
    font-weight: 500;
    color: var(--text-secondary);
}

.date-text {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-action {
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-edit:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-delete:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.no-data {
    text-align: center;
    padding: 3rem;
}

.no-data-content {
    color: var(--text-muted);
}

.no-data-content svg {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.no-data-content p {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.bulk-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.bulk-actions-left {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.bulk-select {
    padding: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.pagination {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.page-info {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0 1rem;
}

@media (max-width: 768px) {
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .content-table {
        font-size: 0.875rem;
    }
    
    .content-table th,
    .content-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .bulk-actions {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .stats-grid-horizontal {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .topbar-actions {
        gap: 0.25rem;
    }
    
    .action-btn {
        width: 32px;
        height: 32px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
}

/* 文件末尾添加缺失的样式 */

/* 颜色预览 */
.color-preview {
    display: inline-block;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    margin-right: 8px;
    vertical-align: middle;
}

/* 标签信息 */
.tag-info {
    display: flex;
    align-items: center;
}

/* 状态徽章 */
.status-badge.status-active {
    background-color: #dcfce7;
    color: #166534;
}

.status-badge.status-paused {
    background-color: #fef3c7;
    color: #92400e;
}

.status-badge.status-expired {
    background-color: #fee2e2;
    color: #991b1b;
}

/* 类型徽章 */
.type-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    background-color: #f3f4f6;
    color: #374151;
}

.type-badge.type-banner {
    background-color: #dbeafe;
    color: #1e40af;
}

.type-badge.type-sidebar {
    background-color: #dcfce7;
    color: #166534;
}

.type-badge.type-content {
    background-color: #fef3c7;
    color: #92400e;
}

.type-badge.type-popup {
    background-color: #fce7f3;
    color: #be185d;
}

/* 内容卡片 */
.content-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.count-badge {
    background: var(--accent-purple);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.card-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.card-body {
    padding: 1.5rem;
}

/* 表格容器 */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

/* 按钮图标 */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-icon.btn-edit:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.btn-icon.btn-reset {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.btn-icon.btn-reset:hover {
    border-color: var(--accent-orange);
    color: white;
    background: var(--accent-orange);
}

.btn-icon.btn-delete:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

/* 项目信息 */
.item-info {
    display: flex;
    flex-direction: column;
}

.item-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.item-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 搜索按钮 */
.search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
}

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

/* 文本样式 */
.text-muted {
    color: var(--text-muted);
}

/* 灰色图标 */
.stat-icon-gray {
    background: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    margin-bottom: 1rem;
}

/* 表单网格 */
.form-grid {
    display: grid;
    gap: 1rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .card-actions {
        justify-content: space-between;
    }
    
    .table-container {
        margin: -1.5rem;
        margin-top: 0;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
}

/* ==================== 暗色主题适配 ==================== */

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #f0f0f0;
    --text-secondary: #e0e0e0;
    --text-muted: #9ca3af;
    --border-color: #404040;
    --hover-bg: #4a4a4a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-orange: #f59e0b;
}

[data-theme="dark"] body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .admin-container {
    background: var(--bg-primary);
}

[data-theme="dark"] .sidebar {
    background: var(--bg-secondary);
    border-right-color: var(--border-color);
}

[data-theme="dark"] .logo-text h1 {
    color: var(--text-primary);
}

[data-theme="dark"] .logo-text p {
    color: var(--text-muted);
}

[data-theme="dark"] .nav-item:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .nav-item.active {
    background: var(--accent-blue);
}

[data-theme="dark"] .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-item.active .nav-link {
    color: white;
}

[data-theme="dark"] .main-content {
    background: var(--bg-primary);
}

[data-theme="dark"] .topbar {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .breadcrumb-item {
    color: var(--text-muted);
}

[data-theme="dark"] .breadcrumb-item:hover {
    color: var(--text-primary);
}

[data-theme="dark"] .breadcrumb-current {
    color: var(--text-primary);
}

[data-theme="dark"] .action-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .action-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .user-name {
    color: var(--text-primary);
}

[data-theme="dark"] .user-role {
    color: var(--text-muted);
}

[data-theme="dark"] .dropdown-toggle {
    color: var(--text-muted);
}

[data-theme="dark"] .dropdown-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-menu {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-secondary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

[data-theme="dark"] .alert-error {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

[data-theme="dark"] .dashboard-title h2 {
    color: var(--text-primary);
}

[data-theme="dark"] .dashboard-title p {
    color: var(--text-muted);
}

[data-theme="dark"] .filter-tabs {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .filter-tab {
    color: var(--text-muted);
}

[data-theme="dark"] .filter-tab:hover {
    color: var(--text-primary);
}

[data-theme="dark"] .filter-tab.active {
    background: var(--accent-blue);
    color: white;
}

[data-theme="dark"] .date-picker input {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .refresh-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .refresh-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .stat-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .stat-card:hover {
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .stat-value {
    color: var(--text-primary);
}

[data-theme="dark"] .stat-label {
    color: var(--text-muted);
}

[data-theme="dark"] .chart-container {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .chart-header h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .data-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .data-header h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .ranking-item:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .rank-title {
    color: var(--text-primary);
}

[data-theme="dark"] .rank-meta {
    color: var(--text-muted);
}

[data-theme="dark"] .search-source span {
    color: var(--text-primary);
}

[data-theme="dark"] .search-value {
    color: var(--text-primary);
}

[data-theme="dark"] .page-header {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .page-title {
    color: var(--text-primary);
}

[data-theme="dark"] .page-description {
    color: var(--text-muted);
}

[data-theme="dark"] .btn-primary {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

[data-theme="dark"] .btn-primary:hover {
    background: #2563eb;
    border-color: #2563eb;
}

[data-theme="dark"] .btn-secondary {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-purple {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
}

[data-theme="dark"] .btn-purple:hover {
    background: #7c3aed;
    border-color: #7c3aed;
}

[data-theme="dark"] .filter-section {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .search-input {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .search-input::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .search-input:focus {
    border-color: var(--accent-blue);
}

[data-theme="dark"] .filter-select {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .filter-select:focus {
    border-color: var(--accent-blue);
}

[data-theme="dark"] .filter-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .filter-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .content-section {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .section-header h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .data-table {
    background: var(--bg-secondary);
}

[data-theme="dark"] .table-header {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .table-row {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .table-body .table-row:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .table-header .table-cell {
    color: var(--text-secondary);
}

[data-theme="dark"] .table-cell {
    color: var(--text-primary);
}

[data-theme="dark"] .post-title {
    color: var(--text-primary);
}

[data-theme="dark"] .category-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .status-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .view-count {
    color: var(--text-muted);
}

[data-theme="dark"] .tag-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .action-dropdown .action-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] .action-dropdown .action-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .action-dropdown .dropdown-menu {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .action-dropdown .dropdown-item {
    color: var(--text-secondary);
}

[data-theme="dark"] .action-dropdown .dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .action-dropdown .dropdown-item.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

[data-theme="dark"] .categories-tree {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .category-item {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .category-content:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .category-toggle:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .category-name {
    color: var(--text-primary);
}

[data-theme="dark"] .category-description {
    color: var(--text-muted);
}

[data-theme="dark"] .post-count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .child-category .category-content {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .tag-name-display {
    color: var(--text-primary);
}

[data-theme="dark"] .tag-name {
    color: var(--text-primary);
}

[data-theme="dark"] .color-code {
    color: var(--text-muted);
}

[data-theme="dark"] .tag-description {
    color: var(--text-muted);
}

[data-theme="dark"] .last-used {
    color: var(--text-muted);
}

[data-theme="dark"] .never-used {
    color: var(--accent-red);
}

[data-theme="dark"] .ad-title {
    color: var(--text-primary);
}

[data-theme="dark"] .ad-position {
    color: var(--text-muted);
}

[data-theme="dark"] .metric-value {
    color: var(--text-primary);
}

[data-theme="dark"] .expires-date {
    color: var(--text-muted);
}

[data-theme="dark"] .expires-date.expired {
    color: var(--accent-red);
}

[data-theme="dark"] .expires-date.expiring-soon {
    color: var(--accent-orange);
}

[data-theme="dark"] .no-expiry {
    color: var(--text-muted);
}

[data-theme="dark"] .settings-tabs {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .tab-btn {
    color: var(--text-muted);
}

[data-theme="dark"] .tab-btn:hover {
    color: var(--text-primary);
}

[data-theme="dark"] .tab-btn.active {
    background: var(--accent-blue);
    color: white;
}

[data-theme="dark"] .settings-section {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .section-header h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .section-header p {
    color: var(--text-muted);
}

[data-theme="dark"] .form-label {
    color: var(--text-primary);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
    border-color: var(--accent-blue);
}

[data-theme="dark"] .form-help {
    color: var(--text-muted);
}

[data-theme="dark"] .switch-slider {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .switch input:checked + .switch-slider {
    background: var(--accent-blue);
}

[data-theme="dark"] .switch-label {
    color: var(--text-primary);
}

[data-theme="dark"] .switch-help {
    color: var(--text-muted);
}

[data-theme="dark"] .posts-management {
    background: var(--bg-primary);
}

[data-theme="dark"] .content-filters {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .content-table-container {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .content-table {
    background: var(--bg-secondary);
}

[data-theme="dark"] .content-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .content-table th,
[data-theme="dark"] .content-table td {
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .content-table tbody tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .title-link {
    color: var(--text-primary);
}

[data-theme="dark"] .title-link:hover {
    color: var(--accent-blue);
}

[data-theme="dark"] .badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .category-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .views-count {
    color: var(--text-muted);
}

[data-theme="dark"] .date-text {
    color: var(--text-muted);
}

[data-theme="dark"] .btn-action {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] .btn-action:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-edit:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

[data-theme="dark"] .btn-delete:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

[data-theme="dark"] .no-data-content p {
    color: var(--text-muted);
}

[data-theme="dark"] .bulk-actions {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .bulk-select {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .page-info {
    color: var(--text-muted);
}

[data-theme="dark"] .content-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .card-header {
    background: var(--bg-tertiary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .card-title h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .data-table {
    background: var(--bg-secondary);
}

[data-theme="dark"] .data-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .data-table th,
[data-theme="dark"] .data-table td {
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .data-table tbody tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .btn-icon {
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] .btn-icon:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-icon.btn-edit:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .btn-icon.btn-reset {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

[data-theme="dark"] .btn-icon.btn-reset:hover {
    border-color: var(--accent-orange);
    color: white;
    background: var(--accent-orange);
}

[data-theme="dark"] .btn-icon.btn-delete:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .item-title {
    color: var(--text-primary);
}

[data-theme="dark"] .item-meta {
    color: var(--text-muted);
}

[data-theme="dark"] .search-btn {
    color: var(--text-muted);
}

[data-theme="dark"] .search-btn:hover {
    color: var(--text-primary);
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted);
}

/* 广告统计信息样式 */
.stats-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 0.875rem;
}

.total-stats {
    font-weight: 600;
    color: var(--text-primary);
}

.today-stats {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.ctr-stats {
    font-size: 0.75rem;
    color: var(--accent-purple);
    font-weight: 500;
}

.stats-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

.position-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 深色主题下的统计样式 */
[data-theme="dark"] .total-stats {
    color: #f8fafc;
}

[data-theme="dark"] .today-stats {
    color: #cbd5e1;
}

[data-theme="dark"] .ctr-stats {
    color: #8b5cf6;
}

[data-theme="dark"] .stats-hint {
    color: var(--text-muted);
}

[data-theme="dark"] .position-badge {
    background: #334155;
    color: #cbd5e1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .stats-info {
        font-size: 0.75rem;
    }
    
    .total-stats {
        font-size: 0.8rem;
    }
    
    .today-stats,
    .ctr-stats {
        font-size: 0.7rem;
    }
}

/* Logo和Favicon上传样式 */
.logo-upload-group,
.favicon-upload-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.logo-preview,
.favicon-preview {
    width: 120px;
    height: 60px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    transition: border-color 0.3s ease;
}

.favicon-preview {
    width: 60px;
    height: 60px;
}

.logo-preview:hover,
.favicon-preview:hover {
    border-color: var(--accent-purple);
}

.logo-preview-img,
.favicon-preview-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 4px;
}

.logo-placeholder,
.favicon-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.logo-placeholder svg,
.favicon-placeholder svg {
    color: var(--text-muted);
    opacity: 0.6;
}

.logo-upload-controls,
.favicon-upload-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-outline:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.1);
}

.btn-danger-outline {
    background: transparent;
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger-outline:hover {
    background: var(--accent-red);
    color: white;
}

.uploading {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-purple);
    font-size: 0.875rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* 深色主题下的样式调整 */
[data-theme="dark"] .logo-preview,
[data-theme="dark"] .favicon-preview {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .logo-placeholder,
[data-theme="dark"] .favicon-placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .btn-outline {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .btn-outline:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] .uploading {
    color: var(--accent-purple);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .logo-upload-group,
    .favicon-upload-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo-upload-controls,
    .favicon-upload-controls {
        flex-direction: row;
        width: 100%;
    }
    
    .btn-outline,
    .btn-danger-outline {
        flex: 1;
        justify-content: center;
    }
}

/* 采集设置页面样式优化 */
.collection-settings {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.collection-settings .page-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.collection-settings .settings-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.collection-settings .settings-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.collection-settings .settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.collection-settings .section-header {
    margin-bottom: 1.5rem;
}

.collection-settings .section-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.collection-settings .section-header h3:before {
    content: '';
    width: 4px;
    height: 1.5rem;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    border-radius: 2px;
}

.collection-settings .section-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.collection-settings .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.collection-settings .form-group {
    display: flex;
    flex-direction: column;
}

.collection-settings .form-group.full-width {
    grid-column: 1 / -1;
}

.collection-settings .form-group label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.collection-settings .form-group label:after {
    content: '*';
    color: var(--accent-red);
    font-size: 0.9rem;
    opacity: 0;
}

.collection-settings .form-group label[for="keywords"]:after,
.collection-settings .form-group label[for="target_sites"]:after,
.collection-settings .form-group label[for="openai_api_key"]:after,
.collection-settings .form-group label[for="chinese_prompt"]:after,
.collection-settings .form-group label[for="english_prompt"]:after,
.collection-settings .form-group label[for="review_prompt"]:after {
    opacity: 1;
}

.collection-settings input[type="text"],
.collection-settings input[type="password"],
.collection-settings input[type="number"],
.collection-settings select,
.collection-settings textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.5;
    transition: all 0.2s ease;
    font-family: inherit;
}

.collection-settings input[type="text"]:focus,
.collection-settings input[type="password"]:focus,
.collection-settings input[type="number"]:focus,
.collection-settings select:focus,
.collection-settings textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
    background: var(--bg-primary);
}

.collection-settings textarea {
    resize: vertical;
    min-height: 120px;
    font-family: 'SF Mono', 'Monaco', 'Consolas', 'Courier New', monospace;
}

.collection-settings textarea[name="keywords"] {
    min-height: 100px;
}

.collection-settings textarea[name="target_sites"] {
    min-height: 140px;
}

.collection-settings textarea[name*="prompt"] {
    min-height: 160px;
    font-family: inherit;
}

.collection-settings select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5rem 1.5rem;
    padding-right: 3rem;
}

.collection-settings .form-help {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.collection-settings .checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collection-settings .checkbox-group:hover {
    border-color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.05);
}

.collection-settings .checkbox-group input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    cursor: pointer;
    accent-color: var(--accent-purple);
}

.collection-settings .checkbox-group label {
    margin: 0;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-primary);
}

.collection-settings .cron-links-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.collection-settings .cron-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.collection-settings .cron-link-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.collection-settings .cron-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.collection-settings .cron-url {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.collection-settings .cron-url code {
    flex: 1;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    word-break: break-all;
    border: 1px solid var(--border-color);
}

.collection-settings .btn-copy {
    padding: 0.5rem 1rem;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.collection-settings .btn-copy:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.collection-settings .cron-example {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.collection-settings .cron-example code {
    background: var(--bg-secondary);
    color: var(--text-muted);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* 状态指示器 */
.collection-settings .input-status {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-green);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.collection-settings .form-group {
    position: relative;
}

.collection-settings input:valid + .input-status {
    opacity: 1;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .collection-settings .form-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .collection-settings .page-header,
    .collection-settings .settings-container,
    .collection-settings .cron-links-section {
        padding: 1.5rem;
    }
    
    .collection-settings .cron-url {
        flex-direction: column;
        align-items: stretch;
    }
    
    .collection-settings .btn-copy {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .collection-settings {
        padding: 0 0.5rem;
    }
    
    .collection-settings .page-header,
    .collection-settings .settings-container,
    .collection-settings .cron-links-section {
        padding: 1rem;
    }
    
    .collection-settings input[type="text"],
    .collection-settings input[type="password"],
    .collection-settings input[type="number"],
    .collection-settings select,
    .collection-settings textarea {
        font-size: 16px; /* 防止iOS缩放 */
    }
}

/* 暗色主题优化 */
[data-theme="dark"] .collection-settings .page-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(139, 92, 246, 0.15) 100%);
}

[data-theme="dark"] .collection-settings select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%94a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

/* 动画效果 */
.collection-settings .settings-section {
    animation: fadeInUp 0.6s ease-out;
}

.collection-settings .settings-section:nth-child(2) {
    animation-delay: 0.1s;
}

.collection-settings .settings-section:nth-child(3) {
    animation-delay: 0.2s;
}

.collection-settings .settings-section:nth-child(4) {
    animation-delay: 0.3s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 保存按钮特殊效果 */
.collection-settings .btn-purple {
    position: relative;
    overflow: hidden;
}

.collection-settings .btn-purple:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.collection-settings .btn-purple:hover:before {
    left: 100%;
}

/* 分类复选框组样式 */
.category-checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.checkbox-item:hover {
    background: var(--hover-bg);
}

.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    cursor: pointer;
    position: relative;
    appearance: none;
    transition: all 0.2s ease;
}

.checkbox-item input[type="checkbox"]:checked {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
}

.checkbox-item input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.checkbox-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-item:hover .checkbox-text {
    color: var(--text-primary);
}

.no-categories {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 2rem;
}

.no-categories a {
    color: var(--accent-purple);
    text-decoration: none;
}

.no-categories a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .category-checkbox-group {
        grid-template-columns: 1fr;
        max-height: 200px;
    }
}

@media (max-width: 768px) {
    .category-checkbox-group {
        gap: 0.75rem;
    }
}

/* 搜索引擎统计样式 */
.period-tabs {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    padding: 0.25rem;
}

.period-tab {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.period-tab.active {
    background: var(--accent-blue);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.search-engine-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.engine-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.engine-item:hover {
    background: var(--hover-bg);
    transform: translateY(-1px);
}

.engine-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.engine-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.875rem;
    color: white;
}

.engine-icon.baidu {
    background: #2932e1;
}

.engine-icon.google {
    background: #4285f4;
}

.engine-icon.bing {
    background: #0078d4;
}

.engine-icon.qihoo {
    background: #00b04f;
}

.engine-icon.sogou {
    background: #fb6c2f;
}

.engine-icon::before {
    content: attr(data-letter);
}

.engine-icon.baidu::before {
    content: '百';
}

.engine-icon.google::before {
    content: 'G';
}

.engine-icon.bing::before {
    content: 'B';
}

.engine-icon.qihoo::before {
    content: '3';
}

.engine-icon.sogou::before {
    content: '搜';
}

.engine-name {
    font-weight: 600;
    color: var(--text-primary);
}

.engine-count {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-blue);
}

/* 暗色主题适配 */
[data-theme="dark"] .period-tabs {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .period-tab {
    color: var(--text-secondary);
}

[data-theme="dark"] .period-tab:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .period-tab.active {
    background: var(--accent-blue);
    color: white;
}

[data-theme="dark"] .engine-item {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .engine-item:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .engine-name {
    color: var(--text-primary);
}

[data-theme="dark"] .engine-count {
    color: var(--accent-blue);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .period-tabs {
        gap: 0.25rem;
        padding: 0.125rem;
    }
    
    .period-tab {
        padding: 0.375rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .engine-item {
        padding: 0.75rem;
    }
    
    .engine-icon {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
    
    .engine-count {
        font-size: 1.1rem;
    }
}

/* 热门文章时间段切换样式 */
.article-period-content {
    width: 100%;
}

.no-data {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 2rem 0;
    border-radius: 8px;
    background: var(--bg-tertiary);
}

.rank-title {
    cursor: help;
    transition: color 0.2s ease;
}

.rank-title:hover {
    color: var(--accent-blue);
}

/* 确保热门文章排行也有正确的间距 */
.data-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.data-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 暗色主题适配 */
[data-theme="dark"] .no-data {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

[data-theme="dark"] .rank-title:hover {
    color: var(--accent-blue);
}

[data-theme="dark"] .data-header h3 {
    color: var(--text-primary);
}