/* 主题变量 */
:root {
    /* 浅色主题 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #06b6d4;
    --accent-tertiary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-gradient-hover: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --glow-primary: 0 0 20px rgba(59, 130, 246, 0.3);
    --glow-secondary: 0 0 20px rgba(139, 92, 246, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-gradient: linear-gradient(135deg, #4c1d95 0%, #1e1b4b 100%);
    --bg-card: rgba(15, 23, 42, 0.9);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-primary: #60a5fa;
    --accent-secondary: #22d3ee;
    --accent-tertiary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-gradient-hover: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    --success-color: #34d399;
    --warning-color: #fbbf24;
    --error-color: #f87171;
    --border-light: #334155;
    --border-medium: #475569;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
    --glow-primary: 0 0 20px rgba(96, 165, 250, 0.4);
    --glow-secondary: 0 0 20px rgba(167, 139, 250, 0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-secondary);
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    transition: var(--transition);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* CSS Grid 布局容器 */
.layout-grid {
    display: grid;
    grid-template-columns: 
        clamp(200px, 26vw, 480px)  /* 侧边栏：从30vw减小到26vw，从560px减小到480px */
        1fr                        /* 主内容 */
        clamp(220px, 22vw, 400px); /* 目录栏：加宽从18vw到22vw，从320px到400px */
    grid-template-rows: 
        auto                       /* header - 导航栏固定，此高度只是占位 */
        1fr                        /* 主要内容区域 */
        auto;                      /* footer */
    grid-template-areas:
        "header header header"
        "sidebar content toc"
        "sidebar footer toc";
    min-height: 100vh;
    gap: 0;
    transition: all 0.3s ease;    /* 添加平滑过渡效果 */
}

/* Grid区域分配 */
.header { grid-area: header; }
.sidebar { grid-area: sidebar; }
.content { grid-area: content; }
.toc-sidebar { grid-area: toc; }
.footer { grid-area: footer; }

/* 全局滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-tertiary));
    border-radius: 4px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, var(--accent-secondary), var(--accent-primary));
}

/* 头部导航 - 固定于顶部 */
.header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    z-index: 1000;
    position: sticky;
    top: 0;
    width: 100%;
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 56px; /* 从64px减小到56px */
    position: relative;
}

/* 导航栏装饰线 */
.navbar::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
    opacity: 0.6;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.brand-link {
    text-decoration: none;
    transition: var(--transition);
}

.brand-link:hover {
    transform: translateY(-2px);
}

.nav-brand h1 {
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.4rem; /* 从1.6rem减小到1.4rem */
    font-weight: 800;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: 0.4rem; /* 从0.5rem减小到0.4rem */
    position: relative;
}

.blog-icon {
    vertical-align: middle;
    border-radius: 50%;
    object-fit: cover;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: var(--transition);
}

.brand-link:hover .blog-icon {
    transform: rotate(360deg) scale(1.1);
    filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.5));
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem; /* 从0.95rem减小到0.9rem */
    padding: 8px 16px; /* 从10px 20px减小到8px 16px */
    border-radius: 22px; /* 从25px减小到22px */
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, transparent, transparent);
    border: 1px solid transparent;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1px;
}

.nav-link:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: white;
    background: var(--accent-gradient);
    box-shadow: var(--glow-primary);
}

.nav-link.active::before {
    left: 0;
}

/* 导航栏按钮样式 */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem; /* 从1.1rem减小到1rem */
    padding: 10px; /* 从12px减小到10px */
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 38px; /* 从44px减小到38px */
    min-height: 38px; /* 从44px减小到38px */
    line-height: 1;
    position: relative;
    overflow: hidden;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--accent-gradient);
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translate(-50%, -50%);
    z-index: -1;
}

.theme-toggle:hover {
    color: white;
    transform: translateY(-2px) rotate(15deg);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.theme-toggle:hover::before {
    width: 120%;
    height: 120%;
}

.theme-toggle:active {
    transform: translateY(0) rotate(0deg);
}



/* 侧边栏样式 - 使用Grid布局 */
.sidebar {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-right: 1px solid var(--border-light);
    padding: clamp(6px, 1.5vw, 20px); /* 更响应式的padding，最小值更小 */
    overflow-y: auto;
    overflow-x: hidden; /* 隐藏横向滚动 */
    transition: var(--transition);
    z-index: 100;
    box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.1);
    /* 桌面端固定侧边栏不滚动 */
    position: sticky;
    top: 56px; /* 与header高度保持一致 */
    height: calc(100vh - 56px); /* 固定高度，确保不随内容滚动 */
    width: 100%; /* 确保侧边栏占满分配的网格宽度 */
    display: flex;
    flex-direction: column;
}

/* 侧边栏内容的响应式样式 - 已合并到下面的样式中 */

[data-theme="dark"] .sidebar {
    background: var(--bg-card);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.05);
}

.sidebar:hover {
    box-shadow: inset -2px 0 0 var(--accent-primary);
}

.sidebar-section {
    margin-bottom: clamp(12px, 2vw, 20px);
    position: relative;
    min-width: 0; /* 防止内容溢出 */
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-section h3 {
    color: var(--text-primary);
    font-size: clamp(0.75rem, 1.8vw, 1.1rem); /* 更响应式的字体大小 */
    font-weight: 600;
    margin-bottom: clamp(6px, 1vw, 12px); /* 响应式边距 */
    position: relative;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-bottom: 6px;
    padding-left: 14px;
}

.sidebar-section h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.sidebar-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    width: 32px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
    opacity: 0.5;
}

.category-list,
.article-list {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%; /* 确保内容占满容器宽度 */
    display: flex;
    flex-direction: column;
}

.category-list li,
.article-list li {
    margin-bottom: 3px;
    width: 100%; /* 让列表项占满容器宽度 */
    min-width: 0; /* 允许内容收缩以适应容器 */
    overflow: hidden; /* 隐藏溢出内容 */
}

.category-list a,
.article-list a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    padding: clamp(6px, 1vw, 8px) clamp(8px, 1.5vw, 12px); /* 响应式内边距 */
    border-radius: 8px;
    transition: var(--transition);
    font-size: clamp(0.7rem, 1.5vw, 0.8rem); /* 响应式字体 */
    line-height: 1.3;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.3);
    white-space: normal; /* 允许文本换行以适应容器宽度 */
    word-wrap: break-word; /* 长单词可以断行 */
    hyphens: auto; /* 自动连字符 */
}

[data-theme="dark"] .category-list a,
[data-theme="dark"] .article-list a {
    background: rgba(255, 255, 255, 0.03);
}

.category-list a::before,
.article-list a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
    transition: var(--transition);
    z-index: -1;
    border-radius: 8px;
}

.category-list a:hover,
.article-list a:hover {
    color: white;
    transform: translateX(2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--accent-primary);
}

.category-list a:hover::before,
.article-list a:hover::before {
    left: 0;
}

.category-list a.active,
.article-list a.active {
    color: white;
    background: var(--accent-gradient);
    box-shadow: var(--shadow-sm);
    border-color: var(--accent-primary);
    transform: translateX(2px);
}

.category-list a.active::before,
.article-list a.active::before {
    left: 0;
}

/* 为分类和文章添加图标 */
.category-list a::after {
    content: '📁';
    margin-left: auto;
    font-size: 0.7rem;
    opacity: 0.6;
}

.article-list a::after {
    content: '📄';
    margin-left: auto;
    font-size: 0.7rem;
    opacity: 0.6;
}

/* 侧边栏滚动条样式 */
.sidebar::-webkit-scrollbar {
    width: 6px;
    height: 6px; /* 水平滚动条高度 */
}

.sidebar::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 确保侧边栏滚动条始终可见 */
.sidebar {
    scrollbar-width: thin;
    scrollbar-color: var(--border-medium) var(--bg-secondary);
}

/* 搜索框样式 */
.search-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 20px;
}

.search-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    border-radius: 24px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: -1;
}

.search-container:focus-within::before {
    opacity: 0.1;
}

.search-input {
    padding: 10px 16px 10px 38px; /* 从12px 20px 12px 44px减小到10px 16px 10px 38px */
    border: 2px solid var(--border-light);
    border-radius: 22px; /* 从25px减小到22px */
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.85rem; /* 从0.9rem减小到0.85rem */
    width: 220px; /* 从240px减小到220px */
    transition: var(--transition);
    position: relative;
    backdrop-filter: blur(10px);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1), var(--shadow-md);
    width: 280px;
    background: var(--bg-primary);
}

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

.search-input:focus::placeholder {
    opacity: 0.7;
}

.search-btn,
.search-clear {
    border: none;
    cursor: pointer;
    padding: 8px; /* 从10px减小到8px */
    border-radius: 50%;
    transition: var(--transition);
    font-size: 0.85rem; /* 从0.9rem减小到0.85rem */
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px; /* 从36px减小到32px */
    min-height: 32px; /* 从36px减小到32px */
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
}

.search-btn {
    background: transparent;
    color: var(--text-secondary);
    box-shadow: none;
}

.search-clear {
    background: var(--error-color);
    color: white;
    box-shadow: var(--shadow-sm);
    left: auto;
    right: 4px;
}

.search-btn:hover {
    transform: translateY(-50%) scale(1.05);
    color: var(--accent-primary);
}

.search-clear:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: var(--shadow-md);
}

.search-clear:hover {
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
}

/* 搜索结果样式 */
.search-content {
    padding: 2rem;
}

.search-header {
    margin-bottom: 2rem;
}

.search-stats {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.search-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.search-result-item {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}

.search-result-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.search-result-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.search-result-category {
    display: inline-block;
    background: var(--accent-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
}

.search-result-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.search-highlight {
    background: rgba(255, 235, 59, 0.3);
    padding: 1px 2px;
    border-radius: 2px;
    font-weight: 500;
}

.search-no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.search-no-results h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* 内容包装器 - 移除，不再需要 */

/* 内容区 - 使用Grid布局 */
.content {
    background: var(--bg-primary);
    padding: 40px;
    overflow-y: auto;
    overflow-x: hidden;
    min-width: 0;
    transition: var(--transition);
    border-left: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
}

[data-theme="dark"] .content {
    background: var(--bg-primary);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

/* 目录侧边栏 - 使用Grid布局 */
.toc-sidebar {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-left: 1px solid var(--border-light);
    padding: 20px;
    overflow-y: auto;
    overflow-x: hidden;
    transition: var(--transition);
    z-index: 100;
    box-shadow: inset 1px 0 0 rgba(255, 255, 255, 0.1);
    /* 桌面端固定目录栏不滚动，与侧边栏行为一致 */
    position: sticky;
    top: 56px; /* 与header高度保持一致 */
    height: calc(100vh - 56px); /* 与侧边栏相同的固定高度 */
    display: flex;
    flex-direction: column;
}

[data-theme="dark"] .toc-sidebar {
    background: var(--bg-card);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 1px 0 0 rgba(255, 255, 255, 0.05);
}

/* 页面布局控制 - 不同页面的目录栏显示 */
/* 在首页、关于页面和分类页面隐藏目录 */
body.view-home .toc-sidebar,
body.view-about .toc-sidebar,
body.view-category .toc-sidebar,
body.view-search .toc-sidebar {
    display: none;
}

/* 没有目录栏的页面扩展主内容区域 */
body.view-home .layout-grid,
body.view-about .layout-grid,
body.view-category .layout-grid,
body.view-search .layout-grid {
    grid-template-columns: 
        clamp(240px, 30vw, 560px)  /* 侧边栏 - 宽度加倍 */
        1fr;                       /* 主内容（扩展） */
    grid-template-areas:
        "header header"
        "sidebar content"
        "sidebar footer";
}

/* 移除特殊页面的侧边栏固定设置，让它们和文章页面保持一致的滚动行为 */
/* 原有的特殊设置已删除，现在所有页面都使用统一的侧边栏行为 */

/* 响应式设计 - CSS Grid布局 */

/* 大屏幕到中等屏幕的过渡 */
@media (max-width: 1440px) {
    .layout-grid {
        grid-template-columns: 
            clamp(170px, 20vw, 400px)  /* 侧边栏：从24vw减小到20vw，从480px减小到400px */
            1fr                         /* 主内容 */
            clamp(200px, 20vw, 360px);  /* 目录栏：加宽从16vw到20vw，从280px到360px */
    }
    
    /* 特殊页面也要响应式 */
    body.view-home .layout-grid,
    body.view-about .layout-grid,
    body.view-category .layout-grid,
    body.view-search .layout-grid {
        grid-template-columns: 
            clamp(170px, 20vw, 400px)  /* 侧边栏：从24vw减小到20vw，从480px减小到400px */
            1fr;                       /* 主内容（扩展） */
    }
}

@media (max-width: 1200px) {
    .layout-grid {
        grid-template-columns: 
            clamp(140px, 18vw, 320px)  /* 侧边栏：从20vw减小到18vw，从400px减小到320px */
            1fr                         /* 主内容 */
            clamp(160px, 18vw, 300px);  /* 目录栏：加宽从14vw到18vw，从240px到300px */
    }
    
    /* 特殊页面也要响应式 */
    body.view-home .layout-grid,
    body.view-about .layout-grid,
    body.view-category .layout-grid,
    body.view-search .layout-grid {
        grid-template-columns: 
            clamp(140px, 18vw, 320px)  /* 侧边栏：从20vw减小到18vw，从400px减小到320px */
            1fr;                       /* 主内容（扩展） */
    }
}

@media (max-width: 1024px) {
    /* 中等屏幕：隐藏目录栏，调整为2列布局 */
    .layout-grid {
        grid-template-columns: 
            clamp(140px, 28vw, 380px)  /* 侧边栏：从30vw减小到28vw，从440px减小到380px */
            1fr;                       /* 主内容扩展 */
        grid-template-areas:
            "header header"
            "sidebar content"
            "sidebar footer";
    }
    
    /* 特殊页面也要响应式 */
    body.view-home .layout-grid,
    body.view-about .layout-grid,
    body.view-category .layout-grid,
    body.view-search .layout-grid {
        grid-template-columns: 
            clamp(140px, 28vw, 380px)  /* 侧边栏：从30vw减小到28vw，从440px减小到380px */
            1fr;                       /* 主内容（扩展） */
    }
      .sidebar {
        /* 中等屏幕上保持固定 */
        height: calc(100vh - 56px); /* 从64px减小到56px */
        position: sticky;
        top: 56px; /* 从64px减小到56px */
    }
    
    .toc-sidebar {
        display: none !important; /* 中等屏幕隐藏目录 */
    }
      .navbar {
        padding: 0 clamp(12px, 2vw, 24px);
        height: clamp(50px, 8vh, 56px); /* 减小高度 */
    }
    
    .nav-brand h1 {
        font-size: clamp(1.2rem, 3vw, 1.6rem);
    }
    
    .search-input {
        width: clamp(160px, 20vw, 200px);
    }
    
    .search-input:focus {
        width: clamp(180px, 22vw, 220px);
    }
}

/* 第二个1024px媒体查询已合并到上面的媒体查询中 */

@media (max-width: 768px) {
    /* 手机和平板：改为垂直堆叠布局，左侧栏→目录栏→主内容的顺序 */
    .layout-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto 1fr auto;
        grid-template-areas:
            "header"
            "sidebar"
            "toc"
            "content"
            "footer";
        padding-top: 0;
    }
    
    /* 特殊页面（首页、关于页面等）也要应用移动端垂直堆叠布局 */
    body.view-home .layout-grid,
    body.view-about .layout-grid,
    body.view-category .layout-grid,
    body.view-search .layout-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr auto; /* 这些页面没有目录栏 */
        grid-template-areas:
            "header"
            "sidebar"
            "content"
            "footer";
        padding-top: 0;
    }      .sidebar {
        /* 移动端侧边栏随页面一起滚动 */
        height: auto;
        position: static; /* 静态定位，随页面滚动 */
        top: auto;
        width: 100%;
        padding: clamp(12px, 3vw, 20px);
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        overflow: visible; /* 完全移除滚动，让内容自然展开 */
        max-height: none; /* 移除高度限制，让内容自然展开 */
    }
    
    [data-theme="dark"] .sidebar {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
      .toc-sidebar {
        /* 目录栏在手机端占满整个页面宽度，随页面滚动 */
        position: static;
        top: auto;
        width: 100%;
        padding: clamp(12px, 3vw, 20px);
        border-left: none;
        border-bottom: 1px solid var(--border-light);
        max-height: none; /* 移除高度限制，让内容自然展开 */
        overflow: visible; /* 让内容随页面滚动 */
        margin-bottom: 0;
        display: block; /* 在手机端始终显示，但内容为空时不占空间 */
    }
    
    /* 非文章页面的目录栏隐藏内容但保持结构 */
    body:not(.view-article) .toc-sidebar {
        display: none;
    }
    
    /* 文章页面显示目录内容 */
    body.view-article .toc-sidebar {
        display: block;
    }
    
    [data-theme="dark"] .toc-sidebar {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    
    .content {
        /* 主内容在手机端占满整个页面宽度 */
        padding: clamp(20px, 5vw, 32px);
        border-left: none;
        border-right: none;
        width: 100%;
        height: auto;
        min-height: calc(100vh - 400px);
    }
    
    [data-theme="dark"] .content {
        border-left: none;
        border-right: none;
    }
    
    .nav-menu {
        gap: clamp(8px, 2vw, 16px);
    }
    
    .nav-link {
        padding: clamp(6px, 1.5vw, 10px) clamp(8px, 2vw, 14px);
        font-size: clamp(0.8rem, 2vw, 0.9rem);
    }
    
    .search-container {
        margin-right: 0;
    }
    
    .search-input {
        width: clamp(120px, 25vw, 160px);
    }
    
    .search-input:focus {
        width: clamp(140px, 28vw, 180px);
    }
    
    .recent-list {
        grid-template-columns: 1fr;
        gap: clamp(12px, 3vw, 20px);
    }
    
    .recent-item {
        padding: clamp(16px, 4vw, 24px);
    }
}

@media (max-width: 480px) {
    /* 最小手机屏幕：保持垂直堆叠布局，进一步优化间距 */
    .navbar {
        padding: 0 clamp(8px, 3vw, 16px);
        flex-wrap: wrap;
        height: auto;
        min-height: clamp(52px, 12vw, 64px);
        gap: clamp(8px, 2vw, 12px);
    }
    
    .nav-brand h1 {
        font-size: clamp(1rem, 4vw, 1.3rem);
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        justify-content: center;
        padding: clamp(6px, 2vw, 12px) 0;
        border-top: 1px solid var(--border-light);
        margin-top: clamp(6px, 2vw, 10px);
        gap: clamp(4px, 2vw, 10px);
    }
    
    .search-container {
        order: 2;
    }      /* 侧边栏在最小屏幕上的优化 */
    .sidebar {
        padding: clamp(14px, 4vw, 20px);
        max-height: none; /* 移除高度限制，让内容完全展开 */
    }
      /* 目录栏在最小屏幕上的优化 */
    .toc-sidebar {
        padding: clamp(14px, 4vw, 20px);
        max-height: none; /* 移除高度限制，让内容完全展开 */
    }
    
    /* 主内容在最小屏幕上的优化 */
    .content {
        padding: clamp(16px, 4vw, 24px);
        min-height: calc(100vh - 300px);
    }
    
    .recent-item {
        padding: clamp(12px, 4vw, 20px);
    }
    
    /* 手机上的侧边栏内容进一步紧凑化 */
    .sidebar-section {
        margin-bottom: clamp(14px, 3vw, 18px);
    }
    
    .sidebar-section h3 {
        font-size: clamp(0.85rem, 2.5vw, 0.95rem);
        margin-bottom: clamp(8px, 2vw, 12px);
    }
    
    .category-list a,
    .article-list a {
        padding: clamp(6px, 2vw, 10px) clamp(8px, 2.5vw, 12px);
        font-size: clamp(0.75rem, 2vw, 0.85rem);
    }
}

.toc-wrapper h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 6px;
}

.toc-wrapper h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 26px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

/* 阅读进度条 */
.reading-progress {
    margin-bottom: 10px;
}

.progress-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border-light);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

.toc-nav {
    font-size: 0.8rem;
}

.toc-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-nav li {
    margin: 0;
    padding: 0;
}

.toc-nav a {
    display: block;
    text-decoration: none;
    color: var(--text-secondary);
    padding: 5px 10px;
    border-radius: 6px;
    transition: var(--transition);
    line-height: 1.3;
    position: relative;
    overflow: hidden;
    font-size: 0.8rem;
}

.toc-nav a:hover {
    color: var(--accent-primary);
    background: var(--bg-secondary);
    transform: translateX(2px);
}

.toc-nav a.active {
    color: var(--accent-primary);
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-primary);
    padding-left: 7px;
}

.toc-nav .toc-h2 {
    padding-left: 10px;
}

.toc-nav .toc-h3 {
    padding-left: 20px;
    font-size: 0.75rem;
}

.toc-nav .toc-h4 {
    padding-left: 30px;
    font-size: 0.7rem;
}

/* 目录中的Markdown渲染元素样式 */
.toc-nav a strong {
    font-weight: 600;
    color: var(--text-primary);
}

.toc-nav a em {
    font-style: italic;
    color: var(--text-secondary);
}

.toc-nav a code {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Fira Code', 'Monaco', 'Menlo', monospace;
    font-size: 0.75em;
    border: 1px solid var(--border-light);
}

.toc-nav a del {
    text-decoration: line-through;
    color: var(--text-muted);
    opacity: 0.7;
}

.toc-nav a mark {
    background: linear-gradient(120deg, var(--warning-color) 0%, var(--warning-color) 100%);
    background-size: 100% 0.2em;
    background-repeat: no-repeat;
    background-position: 0 85%;
    color: inherit;
    padding: 0;
}

/* 目录中Markdown元素的悬停效果 */
.toc-nav a:hover strong {
    color: var(--accent-primary);
}

.toc-nav a:hover code {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.toc-placeholder {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 20px 0;
}

/* 目录侧边栏滚动条样式 */
.toc-sidebar::-webkit-scrollbar {
    width: 4px;
}

.toc-sidebar::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 2px;
}

.toc-sidebar::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 2px;
}

.toc-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 确保目录侧边栏滚动条始终可见 */
.toc-sidebar {
    scrollbar-width: thin;
    scrollbar-color: var(--border-medium) var(--bg-secondary);
}

.view {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 首页样式 */
.recent-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px; /* 增加卡片间距从24px到32px */
    padding: 20px 0;
}

.recent-item {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 14px 24px; /* 进一步减小垂直内边距从18px到14px */
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .recent-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.recent-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.recent-item::after {
    content: '';
    position: absolute;
    top: 16px;
    right: 16px;
    width: 8px;
    height: 8px;
    background: var(--accent-gradient);
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition);
}

.recent-item:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--glow-primary);
    border-color: var(--accent-primary);
}

.recent-item:hover::before {
    transform: scaleX(1);
}

.recent-item:hover::after {
    opacity: 1;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.recent-item h4 {
    color: var(--text-primary);
    font-size: 1.1rem; /* 减小标题字体大小从1.2rem到1.1rem */
    font-weight: 700;
    margin-bottom: 10px; /* 减小底部边距从12px到10px */
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 8px;
}

.recent-item h4::before {
    content: '📝';
    font-size: 1rem;
    opacity: 0.8;
}

.recent-item p {
    color: var(--text-secondary);
    font-size: 0.85rem; /* 进一步减小字体大小从0.9rem到0.85rem */
    line-height: 1.45; /* 进一步减小行高从1.5到1.45 */
    margin-bottom: 10px; /* 进一步减小底部间距从12px到10px */
    display: -webkit-box;
    -webkit-line-clamp: 2; /* 保持2行显示 */
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 添加文章元信息 */
.recent-item .meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px; /* 减小顶部边距从16px到12px */
    padding-top: 12px; /* 减小顶部内边距从16px到12px */
    border-top: 1px solid var(--border-light);
    font-size: 0.75rem; /* 减小字体大小从0.8rem到0.75rem */
    color: var(--text-muted);
}

.recent-item .category {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.recent-item .date {
    display: flex;
    align-items: center;
    gap: 4px;
}

.recent-item .date::before {
    content: '🕒';
    font-size: 0.7rem;
}

/* 文章内容样式 */
.article-content {
    max-width: none;
    line-height: 1.8;
    /* 防止横向溢出 */
    overflow-x: hidden;
    word-wrap: break-word;
}

/* 图片样式 - 确保图片完整显示 */
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    margin: 20px 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
    transition: var(--transition);    border: 1px solid var(--border-light);
}

/* 图片错误占位符样式 */
.article-content .image-error-placeholder {
    max-width: 100%;
    margin: 20px 0;
    text-align: center;
}

.article-content h1 {
    color: var(--text-primary);
    margin-bottom: 24px;
    font-size: 2.25rem;
    font-weight: 700;
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.article-content h2 {
    color: var(--text-primary);
    margin: 40px 0 20px 0;
    font-size: 1.75rem;
    font-weight: 600;
    position: relative;
    padding-left: 16px;
}

.article-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.article-content h3 {
    color: var(--text-primary);
    margin: 32px 0 16px 0;
    font-size: 1.375rem;
    font-weight: 600;
}

.article-content h4 {
    color: var(--text-primary);
    margin: 24px 0 12px 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.article-content p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    text-align: justify;
}

.article-content ul, .article-content ol {
    margin: 20px 0 20px 32px;
}

.article-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.article-content code {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    padding: 4px 8px;
    border-radius: 6px;
    font-family: 'Fira Code', 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
    border: 1px solid var(--border-light);
    /* 防止行内代码过长破坏布局 */
    word-break: break-all;
    white-space: pre-wrap;
}

.article-content pre {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 24px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    /* 强制横向滚动而不是拉伸页面 */
    max-width: 100%;
    white-space: pre;
    word-wrap: normal;
    /* 自定义滚动条样式 */
    scrollbar-width: thin;
    scrollbar-color: var(--border-medium) var(--bg-secondary);
}

/* Webkit浏览器滚动条样式 */
.article-content pre::-webkit-scrollbar {
    height: 8px;
}

.article-content pre::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.article-content pre::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 4px;
    transition: background 0.3s ease;
}

.article-content pre::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.article-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    word-break: normal;
    white-space: pre;
}

/* 代码高亮增强样式 */
.article-content pre {
    position: relative;
}

/* 语言标签样式 */
.code-language-label {
    position: absolute;
    top: 8px;
    right: 12px;
    background: var(--accent-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    z-index: 2;
    opacity: 0.8;
    transition: var(--transition);
}

/* 复制按钮样式 */
.code-copy-btn {
    position: absolute;
    top: 8px;
    right: 80px; /* 位置在语言标签左侧 */
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    z-index: 2;
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
    backdrop-filter: blur(10px);
}

.code-copy-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.code-copy-btn.copied {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

/* 代码块悬停时显示复制按钮 */
.article-content pre:hover .code-copy-btn {
    opacity: 1;
}

/* 仅有复制按钮时的位置调整 */
.article-content pre:not(.has-language-label) .code-copy-btn {
    right: 12px;
}

[data-theme="dark"] .code-language-label {
    background: var(--accent-secondary);
}

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

[data-theme="dark"] .code-copy-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}
/* =========================== 表格样式 =========================== */

/* 基础表格样式 */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    table-layout: fixed;
}

/* 表格容器 */
.table-container {
    width: 100%;
    overflow-x: auto;
}

/* 表格头部样式 */
.article-content table th {
    background: var(--bg-secondary);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--border-light);
}

/* 表格单元格样式 */
.article-content table td {
    padding: 12px;
    border: 1px solid var(--border-light);
    vertical-align: top;
    word-wrap: break-word;
}

/* 第一列宽度控制 - 解决第一列过宽问题 */
.article-content table th:first-child,
.article-content table td:first-child {
    width: 20%;
    min-width: 120px;
    max-width: 200px;
}

/* =========================== Footer样式 =========================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.footer p {
    margin: 4px 0;
}

.footer-decoration {
    width: 60px;
    height: 2px;
    background: var(--accent-gradient);
    margin: 12px auto 0;
    border-radius: 2px;
    opacity: 0.6;
}

[data-theme="dark"] .footer {
    background: var(--bg-tertiary);
    border-top-color: var(--border-medium);
}

/* =========================== 返回顶部按钮样式 =========================== */

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-xl);
}

.back-to-top:active {
    transform: translateY(-1px) scale(1.05);
}

[data-theme="dark"] .back-to-top {
    background: var(--accent-gradient);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}