/* 全局样式重置和基础设置 */
:root {
    /* 主题颜色 - 色彩丰富的主题 */
    --primary-color: #4f46e5; /* 更深的紫蓝色 */
    --primary-light: #e0e7ff;
    --primary-dark: #3730a3;
    
    /* 辅助颜色 - 更丰富多彩 */
    --secondary-color: #8b5cf6; /* 紫色 */
    --secondary-light: #ddd6fe;
    --secondary-dark: #6d28d9;
    
    --accent-color: #06b6d4; /* 青色 */
    --accent-light: #cffafe;
    --accent-dark: #0891b2;
    
    --success-color: #10b981; /* 祖母绿 */
    --success-light: #d1fae5;
    --success-dark: #059669;
    
    --error-color: #ef4444; /* 鲜红色 */
    --error-light: #fee2e2;
    --error-dark: #b91c1c;
    
    --warning-color: #f59e0b; /* 琥珀色 */
    --warning-light: #fef3c7;
    --warning-dark: #d97706;
    
    /* 更现代的灰度 */
    --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;
    
    /* 背景和文本 */
    --background-color: #f5f7fa; /* 更淡的背景 */
    --card-color: #ffffff;
    --card-hover: #f8fafc; /* 卡片悬停颜色 */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-700);
    --text-hint: var(--gray-600);
    --text-disabled: var(--gray-500);
    --text-on-primary: #ffffff;
    
    /* 渐变效果 */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    --gradient-success: linear-gradient(135deg, var(--success-color), var(--accent-color));
    --gradient-header: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    
    /* 边框和阴影 - 更细腻的阴影 */
    --border-color: var(--gray-200);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.05), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 15px 25px rgba(0,0,0,0.05), 0 5px 10px rgba(0,0,0,0.05);
    --shadow-hover: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --shadow-inner: inset 0 2px 4px rgba(0,0,0,0.05);
    
    /* 卡片特效阴影 */
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.06), 0 6px 6px rgba(0, 0, 0, 0.1);
    
    /* 尺寸和间距 */
    --header-height: 64px;
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;
    
    /* 动画 */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

/* 暗色主题 - 将在未来支持 */
@media (prefers-color-scheme: dark) {
    :root {
        /* 主题颜色 - 暗色 */
        --primary-color: #6366f1;  /* 微调紫色，在暗色背景下更显眼 */
        --primary-light: rgba(99, 102, 241, 0.2);
        --primary-dark: #4f46e5;
        
        --secondary-color: #a78bfa;
        --secondary-light: rgba(167, 139, 250, 0.2);
        --secondary-dark: #8b5cf6;
        
        --accent-color: #22d3ee;
        --accent-light: rgba(34, 211, 238, 0.2);
        --accent-dark: #06b6d4;
        
        --success-color: #34d399;
        --success-light: rgba(52, 211, 153, 0.2);
        --success-dark: #10b981;
        
        --error-color: #f87171;
        --error-light: rgba(248, 113, 113, 0.2);
        --error-dark: #ef4444;
        
        --warning-color: #fbbf24;
        --warning-light: rgba(251, 191, 36, 0.2);
        --warning-dark: #f59e0b;
        
        /* 更暗的灰度 */
        --gray-50: #18212f;
        --gray-100: #1e293b;
        --gray-200: #334155;
        --gray-300: #475569;
        --gray-400: #64748b;
        --gray-500: #94a3b8;
        --gray-600: #cbd5e1;
        --gray-700: #e2e8f0;
        --gray-800: #f1f5f9;
        --gray-900: #f8fafc;
        
        /* 背景和文本 */
        --background-color: #0f172a;
        --card-color: #1e293b;
        --card-hover: #273548;
        
        --text-primary: var(--gray-100);
        --text-secondary: var(--gray-300);
        --text-hint: var(--gray-400);
        --text-disabled: var(--gray-500);
        --text-on-primary: #ffffff;
        
        /* 卡片特效阴影 - 暗色下更微妙 */
        --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.2);
        --card-shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.4), 0 6px 6px rgba(0, 0, 0, 0.3);
        
        /* 渐变效果 - 加深暗色模式的渐变 */
        --gradient-primary: linear-gradient(135deg, #4f46e5, #8b5cf6);
        --gradient-accent: linear-gradient(135deg, #06b6d4, #4f46e5);
        --gradient-success: linear-gradient(135deg, #10b981, #06b6d4);
        --gradient-header: linear-gradient(90deg, #1e293b, #334155);
    }
    
    /* 暗色模式下调整图标容器 */
    .site-icon-container {
        background-color: #273548;
    }
    
    /* 暗色模式下调整URL显示 */
    .site-url {
        background-color: var(--gray-700);
        color: var(--text-primary);
    }
    
    /* 头部背景改为更深的渐变 */
    .header {
        background: var(--gradient-header);
    }
    
    /* 暗色模式下卡片头部使用更深色渐变 */
    .site-header {
        background: linear-gradient(to right, #1e293b, #273548);
    }
    
    /* 暗色模式下的搜索框 */
    #searchInput {
        background-color: rgba(0, 0, 0, 0.2);
        color: var(--gray-100);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    #searchInput:focus {
        background-color: rgba(0, 0, 0, 0.3);
        border-color: rgba(255, 255, 255, 0.3);
    }
    
    #searchInput::placeholder {
        color: var(--gray-500);
    }
    
    .search-icon {
        color: var(--gray-500);
    }
    
    /* 暗色模式下的模态框调整 */
    .modal-content {
        background-color: var(--card-color);
        border: 1px solid var(--gray-700);
    }
    
    /* 暗色模式下添加按钮调整 */
    .add-btn {
        background-color: rgba(0, 0, 0, 0.3);
    }
    
    .add-btn:hover {
        background-color: rgba(0, 0, 0, 0.4);
    }
    
    /* 暗色模式下语言选择器调整 */
    .language-select {
        background-color: rgba(0, 0, 0, 0.2);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    .language-select:hover {
        background-color: rgba(0, 0, 0, 0.3);
    }
    
    /* 暗色模式下选项样式 */
    .language-select option {
        background-color: var(--card-color);
        color: var(--text-primary);
    }
}

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

html {
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: 1rem;
    outline: none;
}

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

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

ul {
    list-style: none;
}

/* 顶部导航栏样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    height: var(--header-height);
    background: var(--gradient-header);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    color: var(--text-on-primary);
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* 保留侧边栏的分类样式 */
.category-item {
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.category-item i {
    margin-right: 0.75rem;
    color: var(--text-hint);
}

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

#searchInput {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-full);
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
}

#searchInput:focus {
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
    background-color: rgba(255, 255, 255, 0.25);
}

#searchInput::placeholder {
    color: rgba(255, 255, 255, 0.7);
    opacity: 0.8;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.add-btn {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.add-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.add-btn:active {
    transform: translateY(0);
}

.add-btn i {
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

.user-menu {
    position: relative;
}

.user-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.25rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.user-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    width: 220px;
    background-color: var(--card-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    z-index: 101;
    display: none;
    animation: slideDown 0.2s ease;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    transition: var(--transition-fast);
    color: var(--text-primary);
}

.dropdown-menu a:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

/* 新的布局样式 */
.main-wrapper {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
    position: relative;
}

/* 侧边栏分类样式 */
.sidebar {
    width: 220px;
    background-color: var(--card-color);
    box-shadow: var(--shadow-sm);
    border-right: 1px solid var(--gray-200);
    height: calc(100vh - var(--header-height));
    position: sticky;
    top: var(--header-height);
    overflow-y: auto;
    z-index: 90;
    padding: 1rem 0;
}

/* 主内容区域调整 */
.main-container {
    flex: 1;
    padding: 2rem;
    margin-left: 220px;
    transition: margin-left 0.3s ease;
}

/* 侧边栏中的分类列表 */
.sidebar .category-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 0;
    padding: 0 0.5rem;
}

.sidebar .category-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
}

.sidebar .category-item i {
    margin-right: 0.75rem;
    color: var(--text-hint);
    width: 20px;
    text-align: center;
}

.sidebar .category-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.sidebar .category-item:hover i {
    color: var(--primary-color);
}

.sidebar .category-item.active {
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-weight: 500;
    border-left: 3px solid var(--primary-color);
}

.sidebar .category-item.active i {
    color: var(--primary-color);
}

/* 功能按钮样式 */
.function-btns {
    display: flex;
    gap: 0.5rem;
    margin: 0 0.5rem;
}

.function-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.function-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.function-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* 语言选择下拉框 */
.language-select-container {
    margin-right: 1rem;
    position: relative;
}

.language-select {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-md);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='white' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    padding-right: 2rem;
}

/* 修复下拉选项的文字颜色和背景问题 */
.language-select option {
    color: var(--text-primary);
    background-color: var(--card-color);
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
}

/* 样式选择项的悬停和选中效果 - 通过JavaScript控制下拉框选择行为 */
.language-select:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.15);
}

.language-select:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 移动端响应式调整 */
@media screen and (max-width: 992px) {
    .main-container {
        margin-left: 0;
        padding: 1.5rem;
        width: 100%;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        transform: translateX(-100%);
        z-index: 95;
        box-shadow: var(--shadow-lg);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    /* 汉堡菜单按钮 */
    .category-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background-color: var(--primary-light);
        border: none;
        border-radius: var(--border-radius-full);
        cursor: pointer;
        transition: var(--transition);
        color: var(--primary-dark);
    }
    
    .category-btn span {
        display: none;
    }
    
    .category-btn i {
        margin: 0;
    }
    
    /* 调整功能按钮 */
    .function-btns {
        gap: 0.25rem;
    }
    
    .function-btn {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
}

@media screen and (max-width: 768px) {
    .header {
        padding: 0 0.75rem;
    }
    
    .search-container {
        width: 150px;
    }
    
    .add-btn span {
        display: none;
    }
    
    .add-btn {
        width: 36px;
        height: 36px;
        padding: 0;
    }
    
    .add-btn i {
        margin: 0;
    }
    
    .function-btns {
        gap: 0.15rem;
    }
    
    .function-btn {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
    
    .language-select {
        padding: 0.4rem 1.75rem 0.4rem 0.5rem;
        font-size: 0.85rem;
        background-size: 1.25rem;
    }
}

/* 当前分类样式 */
.current-category {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.current-category h2 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.75rem;
}

/* 网站卡片和网格样式 */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem 0;
}

.site-card {
    position: relative;
    background-color: var(--card-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    height: 100%;
    transform: translateY(0);
    will-change: transform, box-shadow;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-light);
    background-color: var(--card-hover);
    z-index: 1;
}

/* 网站卡片标题部分 */
.site-header {
    display: flex;
    align-items: center;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to right, rgba(244, 247, 254, 0.8), rgba(255, 255, 255, 0.8));
}

.site-icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-md);
    background-color: white;
    box-shadow: var(--shadow-sm);
    margin-right: 1rem;
    overflow: hidden;
    flex-shrink: 0;
}

.site-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    transition: var(--transition);
}

.site-info {
    flex-grow: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.site-name {
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.site-url {
    font-size: 0.875rem;
    color: var(--text-hint);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: monospace;
    background-color: var(--gray-100);
    padding: 0.125rem 0.5rem;
    border-radius: var(--border-radius-sm);
    display: inline-block;
    max-width: 100%;
}

/* 网站卡片详情部分 */
.site-details {
    padding: 1.25rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.site-notes-content {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
    flex-grow: 1;
}

.notes-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-hint);
    margin-bottom: 0.5rem;
}

.notes-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    word-break: break-word;
}

.site-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-hint);
}

.site-category, .site-visits {
    display: flex;
    align-items: center;
}

.site-category i, .site-visits i {
    margin-right: 0.375rem;
    font-size: 0.875rem;
}

/* 网站卡片动作按钮 */
.site-actions {
    display: flex;
    border-top: 1px solid var(--border-color);
    background-color: var(--gray-50);
}

.action-btn {
    flex: 1;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.action-btn:hover {
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--text-primary);
}

.open-btn:hover {
    color: var(--success-color);
    background-color: var(--success-light);
}

.copy-url-btn:hover {
    color: var(--accent-color);
    background-color: var(--accent-light);
}

.edit-btn:hover {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

/* 响应式调整 */
@media screen and (max-width: 1200px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media screen and (max-width: 768px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .site-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .site-icon-container {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
    
    .site-actions {
        justify-content: space-around;
    }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.75);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(5px);
}

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

.modal-content {
    background-color: var(--card-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 90%;
    width: 500px;
    animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    position: relative;
}

.modal-header h3 {
    font-weight: 600;
    font-size: 1.25rem;
    margin: 0;
    letter-spacing: -0.025em;
}

.close-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.modal-body {
    padding: 1.5rem;
    max-height: 70vh;
    overflow-y: auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
    letter-spacing: 0.025em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background-color: var(--card-color);
    color: var(--text-primary);
    appearance: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light);
    outline: none;
}

.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background-color: var(--card-color);
    color: var(--text-primary);
    min-height: 100px;
    resize: vertical;
}

.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light);
    outline: none;
}

.file-input-container {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}

.file-input-container input[type="file"] {
    display: none;
}

.custom-file-btn {
    padding: 0.625rem 1rem;
    background-color: var(--secondary-light);
    color: var(--secondary-color);
    border: 1px solid var(--secondary-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
    margin-right: 0.75rem;
}

.custom-file-btn:hover {
    background-color: var(--secondary-color);
    color: white;
}

.file-name {
    font-size: 0.875rem;
    color: var(--text-hint);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.icon-note {
    font-size: 0.75rem;
    color: var(--text-hint);
    margin-top: 0.375rem;
    font-style: italic;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

.cancel-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--gray-100);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.cancel-btn:hover {
    background-color: var(--gray-200);
    color: var(--text-primary);
}

.submit-btn {
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 分类管理样式 */
.category-list {
    margin-bottom: 1.5rem;
    max-height: 350px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-md);
    background-color: var(--card-color);
    transition: var(--transition-fast);
}

.category-list-item:hover {
    border-color: var(--gray-300);
    background-color: var(--gray-50);
}

.category-list-item .drag-handle {
    cursor: move;
    color: var(--text-hint);
    margin-right: 0.75rem;
    padding: 0.25rem;
    border-radius: 4px;
}

.category-list-item:hover .drag-handle {
    color: var(--text-secondary);
    background-color: var(--gray-200);
}

.category-list-item .category-name {
    flex-grow: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.category-list-item .category-actions {
    display: flex;
    gap: 0.5rem;
}

.category-list-item .edit-btn,
.category-list-item .delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 1rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.category-list-item .edit-btn {
    color: var(--text-hint);
}

.category-list-item .edit-btn:hover {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

.category-list-item .delete-btn {
    color: var(--text-hint);
}

.category-list-item .delete-btn:hover {
    color: var(--error-color);
    background-color: rgba(229, 57, 53, 0.1);
}

.add-category {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.add-category input {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    background-color: white;
}

.add-category input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(30, 136, 229, 0.1);
}

.add-category button {
    padding: 0.75rem 1.25rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
    white-space: nowrap;
}

.add-category button:hover {
    background-color: var(--primary-dark);
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    max-width: 420px;
    display: none;
    transform: translateX(0);
    animation: slideInRight 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border-width: 0 0 0 4px;
    border-style: solid;
}

.notification.success {
    background-color: var(--success-light);
    border-color: var(--success-color);
    color: var(--success-dark);
}

.notification.error {
    background-color: var(--error-light);
    border-color: var(--error-color);
    color: var(--error-dark);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification-content {
    display: flex;
    align-items: center;
}

.notification-icon {
    margin-right: 1rem;
    font-size: 1.25rem;
}

.notification.success .notification-icon::before {
    content: '✓';
    color: var(--success-color);
}

.notification.error .notification-icon::before {
    content: '!';
    color: var(--error-color);
}

.notification-message {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
}

/* 右键菜单样式 */
.context-menu {
    position: absolute;
    display: none;
    background-color: var(--card-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    min-width: 150px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.menu-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: var(--transition-fast);
    color: var(--text-secondary);
}

.menu-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.menu-item i {
    margin-right: 0.75rem;
    width: 18px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-hint);
}

.menu-item:hover i {
    color: var(--primary-color);
}

/* 拖放样式 */
.dragging {
    opacity: 0.5;
    background-color: var(--primary-light);
    border: 2px dashed var(--primary-color);
}

.drag-over {
    background-color: var(--primary-light);
    border-radius: var(--border-radius-md);
}

/* 响应式设计 */
@media screen and (max-width: 1200px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media screen and (max-width: 480px) {
    .header-left, .header-right {
        gap: 0.75rem;
    }
    
    .search-container {
        width: 140px;
    }
    
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .form-actions button {
        width: 100%;
    }
    
    .modal-header h3 {
        font-size: 1.15rem;
    }
    
    .add-category {
        flex-direction: column;
    }
    
    .notification {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

/* 无障碍设计 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* 焦点指示器 */
:focus {
    outline: 3px solid rgba(30, 136, 229, 0.5);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* 语言切换按钮样式 */
.lang-switch-btn {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--primary-light);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: var(--transition);
    color: var(--primary-dark);
    font-weight: 500;
    margin-right: 1rem;
}

.lang-switch-btn i {
    margin-right: 0.5rem;
}

.lang-switch-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 移动端响应式设计 */
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
}

/* 性能优化相关样式 */
img.site-icon {
    will-change: transform;
    contain: strict;
}

/* 加载优化 */
@media (prefers-reduced-motion: no-preference) {
    .site-card {
        animation: fadeIn 0.5s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(10px); }
        to { opacity: 1; transform: translateY(0); }
    }
}

/* 紧急修复 - 2024-3-28 */

/* 修复头部布局 */
.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 确保网站卡片正确显示 */
.site-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    transition: all 0.3s ease;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

/* 站点图标修复 */
.site-icon {
    max-width: 48px;
    height: auto;
    object-fit: contain;
}

/* 语言切换按钮样式 */
#switchLanguage {
    display: flex;
    align-items: center;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border: none;
    border-radius: 20px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

#switchLanguage:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 错误调试样式 */
.debug {
    border: 2px solid red;
}

.debug-bg {
    background-color: rgba(255, 0, 0, 0.1);
}

/* 消除所有可能的样式错误 */
@media screen and (max-width: 768px) {
    .category-btn, .add-btn {
        padding: 0.5rem 0.75rem;
    }
    
    .header-left, .header-right {
        gap: 0.75rem;
    }
}

/* 最终覆盖所有错误 */
.modal {
    display: none;
}

.modal.show {
    display: flex;
}

/* 最终修复状态 */

/* 添加移动设备样式 */
.mobile-only {
    display: none;
}

/* 分类按钮样式 */
.category-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-light);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: var(--transition);
    color: var(--primary-dark);
}

.category-btn i {
    font-size: 1.2rem;
}

.category-btn:hover {
    background-color: rgba(30, 136, 229, 0.2);
}

/* 移动设备适配 */
@media screen and (max-width: 992px) {
    .mobile-only {
        display: flex;
    }
    
    .header-left {
        gap: 0.5rem;
    }
    
    .header-right .function-btns button span {
        display: none;
    }
    
    .sidebar {
        position: fixed;
        left: -250px;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        width: 250px;
        background-color: var(--card-color);
        box-shadow: var(--shadow-lg);
        z-index: 99;
        transition: var(--transition);
        overflow-y: auto;
    }
    
    .sidebar.open {
        left: 0;
    }
}

/* 添加网站介绍弹窗样式 */
.intro-modal .modal-content {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: introFadeIn 0.5s ease-out;
}

.intro-modal .modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px 8px 0 0;
    padding: 15px 20px;
}

.intro-modal .modal-body {
    padding: 20px 25px;
}

.intro-modal h3 {
    color: var(--primary-color);
    margin-top: 20px;
    margin-bottom: 10px;
}

.intro-modal ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.intro-modal li {
    margin-bottom: 8px;
}

.intro-modal p {
    margin-bottom: 12px;
}

.intro-modal #introCloseBtn {
    padding: 10px 25px;
    font-size: 16px;
    min-width: 150px;
}

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

/* 确保通知不干扰介绍弹窗 */
.notification {
    z-index: 1050;
}

.intro-modal {
    z-index: 1100;
}

.empty-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-hint);
    font-size: 1.2rem;
    background-color: var(--card-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 2px dashed var(--gray-300);
}