/* ==================== 全局变量 ==================== */
:root {
    --primary-50: #f0f4ff;
    --primary-100: #e0eaff;
    --primary-200: #c7d8ff;
    --primary-300: #a5bcff;
    --primary-400: #7b98ff;
    --primary-500: #5b73ff;
    --primary-600: #3f4ef0;
    --primary-700: #313cd4;
    --primary-800: #2a32a8;
    --primary-900: #262b82;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
}

[data-theme="light"] {
    --bg-gradient-1: #f0f4ff;
    --bg-gradient-2: #e0eaff;
    --bg-gradient-3: #d9e2ff;
    
    --surface: rgba(255, 255, 255, 0.7);
    --surface-hover: rgba(255, 255, 255, 0.9);
    --surface-active: rgba(255, 255, 255, 0.95);
    
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    
    --border-light: rgba(0, 0, 0, 0.08);
    --border-medium: rgba(0, 0, 0, 0.12);
    
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    --card-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
    
    --toolbar-bg: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] {
    --bg-gradient-1: #0a0f1f;
    --bg-gradient-2: #141b2b;
    --bg-gradient-3: #1a2335;
    
    --surface: rgba(17, 25, 40, 0.75);
    --surface-hover: rgba(30, 41, 59, 0.85);
    --surface-active: rgba(30, 41, 59, 0.95);
    
    --text-primary: #f3f4f6;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    --border-light: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.12);
    
    --card-bg: rgba(30, 41, 59, 0.8);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.4);
    
    --toolbar-bg: rgba(30, 41, 59, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-1), var(--bg-gradient-2), var(--bg-gradient-3));
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    transition: background-color var(--transition-base);
}

.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.gradient-sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.gradient-sphere-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-300), var(--primary-600));
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.gradient-sphere-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #a78bfa, #8b5cf6);
    bottom: -100px;
    left: -100px;
    animation-delay: 5s;
}

.gradient-sphere-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #f472b6, #ec4899);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(2%, 2%) scale(1.05);
    }
    66% {
        transform: translate(-2%, -1%) scale(0.95);
    }
}

.glass {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-light);
    box-shadow: var(--card-shadow);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-base);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border-medium);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

.loading-text {
    color: white;
    font-size: 18px;
    font-weight: 500;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

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

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    animation: slideDown 0.5s ease;
}

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

.site-title {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.site-title i {
    margin-right: var(--spacing-sm);
    color: var(--primary-500);
    -webkit-text-fill-color: initial;
}

.site-description {
    color: var(--text-secondary);
    font-size: 14px;
}

.header-right {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 78, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 78, 255, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

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

.btn-danger {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
    color: white;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-light);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.5s ease 0.1s both;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    animation: scaleIn 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
    font-size: 24px;
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.toolbar {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.view-mode-switch {
    display: flex;
    background: var(--surface);
    border-radius: var(--radius-full);
    padding: 2px;
    border: 1px solid var(--border-light);
}

.view-mode-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.view-mode-btn:hover {
    color: var(--primary-500);
}

.view-mode-btn.active {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
}

.page-size-selector select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

.import-export-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.search-wrapper {
    position: relative;
    min-width: 300px;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 14px;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    font-size: 14px;
    background: var(--surface);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(91, 115, 255, 0.1);
}

.filter-section {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.filter-tabs {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-tab:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.filter-tab.active {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(91, 115, 255, 0.3);
}

.filter-badge {
    color: var(--text-tertiary);
    font-size: 13px;
}

.groups-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.5s ease 0.3s both;
}

.groups-container.ungrouped-view {
    grid-template-columns: 1fr;
}

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

.group-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all var(--transition-base);
    height: fit-content;
}

.group-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.group-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(91, 115, 255, 0.1), rgba(63, 78, 240, 0.05));
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.group-title-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.group-icon {
    font-size: 28px;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.group-info {
    flex: 1;
}

.group-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.group-public-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--success);
    color: white;
}

.group-description {
    font-size: 13px;
    color: var(--text-tertiary);
}

.group-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.group-card:hover .group-actions {
    opacity: 1;
}

.group-action-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.group-action-btn:hover {
    background: var(--surface-hover);
    color: var(--primary-500);
    transform: scale(1.1);
}

.group-action-btn.delete:hover {
    color: var(--error);
}

.site-list {
    list-style: none;
    padding: 0;
}

.site-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-base);
    cursor: pointer;
}

.site-item:hover {
    background: var(--surface);
    transform: translateX(4px);
}

.site-item:last-child {
    border-bottom: none;
}

.site-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-md);
    object-fit: cover;
    background: var(--surface);
    border: 1px solid var(--border-light);
}

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

.site-name-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: 2px;
    flex-wrap: wrap;
}

.site-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.site-type-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--primary-100);
    color: var(--primary-700);
    font-weight: 500;
}

.site-expire-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--warning);
    color: white;
}

.site-url {
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
    flex-wrap: wrap;
}

.site-visit-count {
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-visit-count i {
    font-size: 11px;
}

.site-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.site-item:hover .site-actions {
    opacity: 1;
}

.site-action-btn {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.site-action-btn:hover {
    background: var(--surface-hover);
    color: var(--primary-500);
    transform: scale(1.1);
}

.site-action-btn.delete:hover {
    color: var(--error);
}

.content-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 500;
}

.content-type-badge.url {
    background: #dbeafe;
    color: #2563eb;
}

.content-type-badge.text {
    background: #dcfce7;
    color: #16a34a;
}

.content-type-badge.html {
    background: #fff3cd;
    color: #b85c00;
}

.content-type-badge.auto {
    background: var(--gray-200);
    color: var(--gray-600);
}

.content-type-indicator {
    margin-top: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-sm);
}

.add-group-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.add-group-card:hover {
    border-color: var(--primary-500);
    background: var(--surface);
    transform: scale(1.02);
}

.add-group-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
    font-size: 24px;
    margin-bottom: var(--spacing-md);
}

.add-group-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
}

.pagination-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--surface-hover);
    transform: translateY(-2px);
}

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

.pagination-info {
    color: var(--text-secondary);
    font-size: 14px;
}

.ungrouped-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--surface);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-light);
}

.order-selector {
    display: flex;
    gap: var(--spacing-sm);
}

.order-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    transition: all var(--transition-base);
}

.order-btn:hover {
    background: var(--surface-hover);
    color: var(--primary-500);
}

.order-btn.active {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border-color: transparent;
}

.ungrouped-stats {
    color: var(--text-tertiary);
    font-size: 14px;
}

.admin-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 100;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.admin-float-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 20px rgba(91, 115, 255, 0.4);
    transition: all var(--transition-base);
    position: relative;
}

.admin-float-btn:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 30px rgba(91, 115, 255, 0.5);
}

.admin-float-btn::before {
    content: attr(title);
    position: absolute;
    right: 70px;
    background: var(--surface);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.admin-float-btn:hover::before {
    opacity: 1;
    right: 80px;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: var(--surface);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    z-index: 100;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    animation: bounce 2s infinite;
}

.back-to-top:hover {
    background: var(--surface-hover);
    transform: translateY(-4px);
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    width: 500px;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: var(--radius-lg);
    animation: slideUp 0.3s ease;
}

.modal-lg {
    width: 700px;
}

.modal-sm {
    width: 400px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--surface);
    backdrop-filter: blur(12px);
    z-index: 1;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--surface-hover);
    color: var(--error);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    position: sticky;
    bottom: 0;
    background: var(--surface);
    backdrop-filter: blur(12px);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

label i {
    margin-right: var(--spacing-sm);
    color: var(--primary-500);
}

.required {
    color: var(--error);
    margin-left: 2px;
}

.badge-private {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--warning);
    color: white;
    margin-left: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: var(--spacing-sm);
}

input, textarea, select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: 14px;
    background: var(--surface);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(91, 115, 255, 0.1);
}

textarea {
    resize: vertical;
    min-height: 80px;
    font-family: 'Monaco', 'Menlo', monospace;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
}

.stat-display {
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.form-hint {
    margin-top: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-error {
    color: var(--error);
    font-size: 13px;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-sm);
}

.login-attempts {
    margin-top: var(--spacing-sm);
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ==================== 标签样式 ==================== */
.tags-input-container {
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--surface);
    padding: var(--spacing-sm);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
    min-height: 32px;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    transition: all var(--transition-base);
}

.tag-item .tag-remove {
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-base);
}

.tag-item .tag-remove:hover {
    opacity: 1;
    color: var(--error);
}

.popular-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.popular-tag {
    padding: 2px 8px;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.popular-tag:hover {
    background: var(--surface-hover);
    color: var(--primary-500);
    border-color: var(--primary-500);
}

.site-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 4px;
}

.site-tag {
    padding: 2px 8px;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* ==================== 折叠面板 ==================== */
.collapse-section {
    margin-top: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.collapse-header {
    padding: var(--spacing-md);
    background: var(--surface);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: background var(--transition-base);
}

.collapse-header:hover {
    background: var(--surface-hover);
}

.collapse-header i {
    transition: transform var(--transition-base);
}

.collapse-content {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    background: var(--surface);
}

/* ==================== 导入导出 ==================== */
.import-options {
    margin-bottom: var(--spacing-lg);
}

.import-preview {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.import-preview h3 {
    font-size: 16px;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.preview-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: var(--spacing-sm);
}

.preview-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.preview-tab:hover {
    color: var(--primary-500);
    background: var(--surface-hover);
}

.preview-tab.active {
    color: var(--primary-500);
    background: var(--primary-50);
    font-weight: 500;
}

.preview-content {
    max-height: 400px;
    overflow: auto;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: 'Monaco', 'Menlo', monospace;
    white-space: pre-wrap;
    word-break: break-all;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--surface);
    backdrop-filter: blur(12px);
    border-left: 4px solid var(--primary-500);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--card-shadow);
    animation: slideInRight 0.3s ease;
    max-width: 350px;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--error); }
.toast.warning { border-left-color: var(--warning); }

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--text-tertiary);
    grid-column: 1 / -1;
}

.empty-state i {
    font-size: 64px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.load-more {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
}

.load-more-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition-base);
}

.load-more-btn:hover:not(:disabled) {
    background: var(--surface-hover);
    transform: translateY(-2px);
}

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

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .groups-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left, .toolbar-right {
        flex-direction: column;
        align-items: stretch;
    }
    
    .view-mode-switch {
        align-self: center;
    }
    
    .import-export-buttons {
        justify-content: center;
    }
    
    .search-wrapper {
        min-width: auto;
        width: 100%;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .ungrouped-toolbar {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .order-selector {
        width: 100%;
        justify-content: center;
    }
    
    .admin-float {
        bottom: 20px;
        right: 20px;
    }
    
    .admin-float-btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .back-to-top {
        bottom: 20px;
        left: 20px;
        width: 40px;
        height: 40px;
    }
    
    .site-actions {
        opacity: 1;
    }
    
    .group-actions {
        opacity: 1;
    }
    
    .pagination {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .site-tags {
        margin-top: 2px;
    }
    
    .site-tag {
        font-size: 9px;
        padding: 1px 6px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-tabs {
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
        flex-wrap: nowrap;
    }
    
    .filter-tab {
        white-space: nowrap;
    }
    
    .site-name-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .site-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
}