/* ============================================
   AURA SSO Theme - Hexo Blog UI (优化版)
   基于 AURA Single Sign-On 设计
   性能优化：减少 backdrop-filter，优化动画，GPU 加速
   ============================================ */

/* ============================================
   1. 字体引入 / Fonts (优化)
   ============================================ */
/* 预连接 Google Fonts 加速加载 */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Space+Grotesk:wght@400;500;600&display=swap');

/* ============================================
   2. 设计变量 / Design Variables
   ============================================ */
:root {
    /* 间距 */
    --radius-pill: 999px;
    --radius-card: 20px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 48px;

    /* 动画 */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-theme: background-color 0.6s var(--ease-out-expo), color 0.6s var(--ease-out-expo);
    --transition-element: background-color 0.3s ease, transform 0.2s ease, opacity 0.3s ease;
}

/* ============================================
   3. 深色主题 / Dark Theme
   ============================================ */
[data-theme="dark"] {
    --bg-base: #030407;
    --bg-surface-1: rgba(255, 255, 255, 0.02);
    --bg-surface-2: rgba(255, 255, 255, 0.05);
    --bg-surface-3: rgba(255, 255, 255, 0.1);
    --bg-accent: #FFFFFF;
    --bg-accent-hover: #E0EDFF;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.5);
    --text-accent: #030407;
    --text-tech: rgba(255, 255, 255, 0.3);
    --glow-color: 255, 255, 255;
    --shader-core: #FFFFFF;
    --shader-fringe: #4A88FF;
    --border-color: rgba(255, 255, 255, 0.08);
}

/* ============================================
   4. 浅色主题 / Light Theme
   ============================================ */
[data-theme="light"] {
    --bg-base: #F5F7FA;
    --bg-surface-1: rgba(0, 0, 0, 0.03);
    --bg-surface-2: rgba(0, 0, 0, 0.06);
    --bg-surface-3: rgba(0, 0, 0, 0.12);
    --bg-accent: #050608;
    --bg-accent-hover: #1A1E26;
    --text-primary: #050608;
    --text-secondary: rgba(0, 0, 0, 0.5);
    --text-accent: #FFFFFF;
    --text-tech: rgba(0, 0, 0, 0.3);
    --glow-color: 0, 0, 0;
    --shader-core: #050608;
    --shader-fringe: #8BA3CC;
    --border-color: rgba(0, 0, 0, 0.08);
}

/* ============================================
   5. 全局样式 / Global Styles
   ============================================ */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    transition: var(--transition-theme);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================
   6. WebGL 背景容器 / WebGL Container
   ============================================ */
#webgl-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    /* GPU 加速 */
    will-change: contents;
}

/* ============================================
   7. 顶部导航栏 / Top Bar (优化)
   ============================================ */
.top-bar {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    z-index: 100;
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    /* GPU 加速 */
    will-change: transform;
    transform: translateZ(0);
}

.version-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    /* 移除 backdrop-filter，改用纯色背景 */
    background: var(--bg-surface-2);
    border-radius: var(--radius-pill);
}

.theme-toggle {
    height: 40px;
    padding: 0 var(--space-lg);
    background-color: var(--bg-surface-2);
    color: var(--text-primary);
    gap: var(--space-sm);
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    cursor: pointer;
    display: flex;
    align-items: center;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-element);
    /* GPU 加速 */
    will-change: transform;
}

.theme-toggle:hover {
    background-color: var(--bg-surface-3);
    transform: translateY(-2px);
}

/* ============================================
   8. 技术标签 / Tech Labels
   ============================================ */
.tech-label {
    position: fixed;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--text-tech);
    text-transform: uppercase;
    transition: var(--transition-theme);
    z-index: 10;
    /* GPU 加速 */
    will-change: transform;
    transform: translateZ(0);
}

.label-top-left {
    top: var(--space-xl);
    left: var(--space-xl);
}

.label-bottom-left {
    bottom: var(--space-xl);
    left: var(--space-xl);
}

.label-vertical-right {
    top: 50%;
    right: var(--space-xl);
    transform: translateY(-50%) rotate(90deg);
    transform-origin: center right;
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.label-vertical-right::before,
.label-vertical-right::after {
    content: '[';
    opacity: 0.5;
}

.label-vertical-right::after {
    content: ']';
}

/* ============================================
   9. 主布局 / Main Layout
   ============================================ */
.layout-grid {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1440px;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr auto;
    padding: var(--space-xl);
    margin: 0 auto;
}

/* Archives 页面特殊布局 */
.layout-grid:has(.archive-page-wrapper) {
    height: 100vh;
    overflow: hidden;
}

.layout-grid:has(.archive-page-wrapper) .content-wrapper {
    overflow-y: auto;
    padding-right: var(--space-xl);
}

/* 首页特殊布局 */
.home-welcome {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    height: 100%;
    min-height: 60vh;
    padding: var(--space-xl);
}

/* ============================================
   10. 文章列表 / Post List (优化)
   ============================================ */
.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.post-card {
    background: var(--bg-surface-1);
    border-radius: var(--radius-card);
    padding: var(--space-lg);
    /* 移除 backdrop-filter，改用纯色背景 */
    border: 1px solid var(--border-color);
    transition: var(--transition-element);
    /* GPU 加速 */
    will-change: transform;
    transform: translateZ(0);
}

.post-card:hover {
    background: var(--bg-surface-2);
    transform: translateY(-4px) translateZ(0);
    border-color: rgba(255, 255, 255, 0.15);
}

.post-card .post-title {
    font-size: 20px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.post-card .post-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.post-card .post-meta span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-tech);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.post-card .post-meta .post-date::before {
    content: '// ';
}

.post-card .post-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 重置 post-excerpt 内部的所有元素样式 */
.post-card .post-excerpt * {
    all: revert;
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    padding: 0;
    font-weight: normal;
    display: inline;
}

/* 特别处理标题元素 */
.post-card .post-excerpt h1,
.post-card .post-excerpt h2,
.post-card .post-excerpt h3,
.post-card .post-excerpt h4,
.post-card .post-excerpt h5,
.post-card .post-excerpt h6 {
    font-size: 14px;
    font-weight: normal;
    margin: 0;
    display: inline;
}

/* 处理段落和换行 */
.post-card .post-excerpt p {
    display: inline;
    margin: 0;
}

/* 处理图片 */
.post-card .post-excerpt img {
    display: none;
}

/* 处理链接 */
.post-card .post-excerpt a {
    color: var(--text-secondary);
    text-decoration: none;
}

/* ============================================
   11. 侧边栏 / Sidebar (优化)
   ============================================ */
.sidebar-wrapper {
    grid-column: 2;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: var(--space-xl);
}

.auth-panel {
    width: 100%;
    max-width: 440px;
    background-color: var(--bg-surface-2);
    border-radius: var(--radius-card);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    /* 移除 backdrop-filter */
    border: 1px solid var(--border-color);
    transition: var(--transition-theme);
    /* GPU 加速 */
    will-change: transform;
    transform: translateZ(0);
}

/* ============================================
   12. 头部组 / Header Group
   ============================================ */
.header-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.system-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-primary);
    background: var(--bg-surface-3);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-pill);
    align-self: flex-start;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.1em;
}

.panel-title {
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text-primary);
}

.panel-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
}

/* ============================================
   13. SSO 按钮网格 / SSO Button Grid
   ============================================ */
.sso-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    justify-items: center;
}

.btn-sso {
    width: 64px;
    height: 64px;
    background-color: var(--bg-surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-element);
    overflow: hidden;
    /* GPU 加速 */
    will-change: transform;
}

.btn-sso:hover {
    background-color: var(--bg-surface-3);
    transform: translateY(-2px) translateZ(0);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-sso i {
    font-size: 28px;
}

/* 头像按钮特殊样式 */
.btn-sso.avatar-btn {
    padding: 0;
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 龙虾图标 */
.ph-lobster::before {
    content: '\1F99E';
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   14. 分隔线 / Divider
   ============================================ */
.sso-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-tech);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.sso-divider::before,
.sso-divider::after {
    content: "";
    flex: 1;
    height: 2px;
    background-color: var(--bg-surface-2);
    border-radius: var(--radius-pill);
}

/* ============================================
   15. 导航链接组 / Nav Links (优化)
   ============================================ */
.nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-surface-2);
    border-radius: var(--radius-pill);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition-element);
    border: 1px solid var(--border-color);
    position: relative;
    /* GPU 加速 */
    will-change: transform;
}

.nav-link.active {
    background: var(--bg-surface-3);
    border-color: rgba(76, 175, 80, 0.5);
}

.nav-link .active-indicator {
    width: 8px;
    height: 8px;
    background-color: #4CAF50;
    border-radius: 50%;
    margin-right: var(--space-sm);
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
    /* 优化动画：缩短周期 */
    animation: pulse 3s ease-in-out infinite;
    flex-shrink: 0;
    display: inline-block;
}

.nav-link .link-text {
    display: flex;
    align-items: center;
}

.nav-link .link-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-tech);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-left: var(--space-sm);
}

/* 优化 pulse 动画 - 更长周期减少计算 */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.nav-link:hover {
    background: var(--bg-surface-3);
    transform: translateX(var(--space-sm)) translateZ(0);
}

.nav-link .link-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-tech);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ============================================
   16. 统计信息 / Stats
   ============================================ */
.stats-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.stat-item {
    background: var(--bg-surface-2);
    border-radius: var(--radius-card);
    padding: var(--space-md);
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-tech);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--space-xs);
}

/* ============================================
   17. 页脚 / Footer
   ============================================ */
.footer-info {
    margin-top: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.footer-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-tech);
    text-align: center;
    letter-spacing: 0.05em;
}

/* ============================================
   18. 归档页面 / Archive Page
   ============================================ */
.archive-page-wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    padding-right: var(--space-lg);
}

.archive-page-wrapper::-webkit-scrollbar {
    width: 8px;
}

.archive-page-wrapper::-webkit-scrollbar-track {
    background: transparent;
}

.archive-page-wrapper::-webkit-scrollbar-thumb {
    background: var(--bg-surface-3);
    border-radius: var(--radius-pill);
}

.archive-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
    max-width: 85%;
}

.archive-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-surface-1);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    transition: var(--transition-element);
    min-height: 60px;
}

.archive-item:hover {
    background: var(--bg-surface-2);
    border-color: rgba(255, 255, 255, 0.15);
}

.archive-item .archive-title {
    font-size: 15px;
    color: var(--text-primary);
    flex: 1;
}

.archive-item .archive-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-tech);
    white-space: nowrap;
}

/* ============================================
   19. Archives 页面简约侧边导航 / Simple Sidebar Nav
   ============================================ */
.archive-nav-simple {
    grid-column: 2;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 50%;
    transform: translateY(-50%);
    align-self: center;
    background: var(--bg-surface-2);
    /* 移除 backdrop-filter */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    padding: var(--space-md);
}

.nav-icon-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: var(--transition-element);
    position: relative;
    cursor: pointer;
    /* GPU 加速 */
    will-change: transform;
}

.nav-icon-btn:hover {
    background: var(--bg-surface-3);
    color: var(--text-primary);
    transform: scale(1.05) translateZ(0);
    border-color: rgba(255, 255, 255, 0.15);
}

.nav-icon-btn.active {
    color: var(--text-primary);
    border-color: rgba(76, 175, 80, 0.5);
    background: var(--bg-surface-3);
}

.nav-icon-btn .active-dot {
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: #4CAF50;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
}

.nav-icon-btn i {
    font-size: 22px;
}

/* ============================================
   20. 分页器 / Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.page-number,
.extend {
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface-2);
    border-radius: var(--radius-pill);
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--text-primary);
    transition: var(--transition-element);
    border: 1px solid var(--border-color);
    /* GPU 加速 */
    will-change: transform;
}

.page-number:hover,
.extend:hover {
    background: var(--bg-surface-3);
    transform: translateY(-2px) translateZ(0);
}

.page-number.current {
    background: var(--bg-accent);
    color: var(--text-accent);
    font-weight: 600;
}

/* ============================================
   21. 响应式 / Responsive
   ============================================ */
@media (max-width: 1024px) {
    .layout-grid {
        grid-template-columns: 1fr;
        padding: var(--space-md);
    }

    .content-wrapper {
        grid-column: 1;
        padding-right: 0;
    }

    .sidebar-wrapper {
        grid-column: 1;
        padding-top: 0;
    }

    .label-vertical-right {
        display: none;
    }

    .auth-panel {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .top-bar {
        top: var(--space-md);
        right: var(--space-md);
    }

    .tech-label {
        font-size: 8px;
    }

    .label-top-left {
        top: var(--space-md);
        left: var(--space-md);
    }

    .label-bottom-left {
        bottom: var(--space-md);
        left: var(--space-md);
    }

    .panel-title {
        font-size: 24px;
    }

    .sso-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-sm);
    }

    .btn-sso {
        height: 48px;
    }
}

/* ============================================
   22. 文章详情页（旧）/ Post Detail Page
   ============================================ */
.post-detail {
    background: var(--bg-surface-1);
    border-radius: var(--radius-card);
    padding: var(--space-xl);
    /* 移除 backdrop-filter */
    border: 1px solid var(--border-color);
}

.post-detail .article-title {
    font-size: 32px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

/* ============================================
   23. 关于我页面 / About Page
   ============================================ */
.about-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: calc(100% - var(--space-xl) * 2);
    margin: 0 auto;
    padding: var(--space-xl);
    padding-top: 100px;
    min-height: 100vh;
}

.about-title {
    font-size: 32px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.about-content h1,
.about-content h2,
.about-content h3 {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.about-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.about-content ul {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.about-content a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-element);
}

.about-content a:hover {
    color: var(--accent-primary-glow);
    text-shadow: 0 0 10px var(--accent-primary-glow);
}

.about-content hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    margin: var(--space-xl) 0;
}

/* ============================================
   24. 文章全屏页 / Post Full Page
   ============================================ */
.post-full-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: calc(100% - var(--space-xl) * 2);
    margin: 0 auto;
    padding: var(--space-xl);
    padding-top: 80px;
    min-height: 100vh;
}

.post-nav-bar {
    position: fixed;
    top: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: calc(1440px - var(--space-xl) * 2);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-surface-2);
    /* 移除 backdrop-filter */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    /* GPU 加速 */
    will-change: transform;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
}

.nav-back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-secondary);
    transition: var(--transition-element);
}

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

.nav-back-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-back-btn.disabled:hover {
    color: var(--text-secondary);
    transform: none;
}

.nav-back-btn i {
    font-size: 18px;
}

.nav-divider {
    width: 1px;
    height: 16px;
    background: var(--border-color);
    margin: 0 var(--space-xs);
}

.nav-site-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-pill);
    transition: var(--transition-element);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.nav-site-btn.active {
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
}

.post-article-content {
    max-width: 100%;
    padding: var(--space-xl);
}

.post-title {
    font-size: 36px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    text-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    padding-bottom: var(--space-lg);
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.post-meta span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.post-category::before {
    content: '[';
    margin-right: 4px;
}

.post-category::after {
    content: ']';
    margin-left: 4px;
}

.tag {
    background: var(--bg-surface-2);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
}

.post-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
    text-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

.post-content p {
    margin-bottom: var(--space-lg);
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 100%);
    padding: var(--space-md);
    border-radius: 8px;
}

.post-content a {
    color: var(--text-primary);
    border-bottom: 1px solid var(--text-secondary);
    transition: var(--transition-element);
}

.post-content a:hover {
    border-bottom-color: var(--text-primary);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    margin: var(--space-xl) 0 var(--space-md);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.post-content h1 {
    font-size: 32px;
}

.post-content h2 {
    font-size: 26px;
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.post-content h3 {
    font-size: 20px;
}

.post-content pre {
    background: var(--bg-surface-2);
    border-radius: var(--radius-card);
    padding: var(--space-lg);
    overflow-x: auto;
    margin: var(--space-lg) 0;
    border: 1px solid var(--border-color);
}

.post-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    background: var(--bg-surface-2);
    padding: 2px 8px;
    border-radius: 4px;
}

.post-content pre code {
    padding: 0;
    background: transparent;
}

.post-content blockquote {
    border-left: 3px solid var(--bg-accent);
    padding-left: var(--space-lg);
    margin: var(--space-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
    background: var(--bg-surface-2);
    padding: var(--space-lg);
    border-radius: 0 var(--radius-card) var(--radius-card) 0;
}

.post-content ul,
.post-content ol {
    margin: var(--space-lg) 0;
    padding-left: var(--space-xl);
}

.post-content li {
    margin-bottom: var(--space-sm);
}

.post-content img {
    max-width: 100%;
    border-radius: var(--radius-card);
    margin: var(--space-lg) 0;
    border: 1px solid var(--border-color);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    background: var(--bg-surface-2);
    border-radius: var(--radius-card);
    overflow: hidden;
}

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

.post-content th {
    background: var(--bg-surface-3);
    font-weight: 600;
}

/* ============================================
   25. 分类和标签页 - 创意云排布 (优化)
   ============================================ */
.category-cloud-wrapper,
.tag-cloud-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: var(--space-xl);
}

.category-cloud,
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    max-width: 900px;
}

/* 移动端禁用漂浮动画 */
@media (max-width: 768px) {
    .category-cloud-item,
    .tag-cloud-item {
        animation: none !important;
    }
}

.category-cloud-item,
.tag-cloud-item {
    position: relative;
    /* 优化：缩短动画周期从 6s 到 4s */
    animation: float 4s ease-in-out infinite;
    transition: var(--transition-element);
}

/* 根据 intensity 变量动态设置字体大小 */
.category-cloud-item a,
.tag-cloud-item a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-lg);
    background: var(--bg-surface-1);
    /* 移除 backdrop-filter */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    font-family: 'Space Grotesk', sans-serif;
    font-size: calc(14px + 8px * var(--intensity, 0.5));
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-element);
    white-space: nowrap;
}

.category-cloud-item a:hover,
.tag-cloud-item a:hover {
    background: var(--bg-surface-3);
    transform: scale(1.05) translateY(-2px) translateZ(0);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
}

.category-cloud-item .count,
.tag-cloud-item .count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-tech);
    background: var(--bg-surface-2);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
}

/* 错落的动画延迟，让漂浮效果更自然 */
.category-cloud-item:nth-child(1) { animation-delay: 0s; }
.category-cloud-item:nth-child(2) { animation-delay: 0.5s; }
.category-cloud-item:nth-child(3) { animation-delay: 1s; }
.category-cloud-item:nth-child(4) { animation-delay: 1.5s; }
.category-cloud-item:nth-child(5) { animation-delay: 2s; }
.category-cloud-item:nth-child(6) { animation-delay: 2.5s; }
.category-cloud-item:nth-child(7) { animation-delay: 3s; }
.category-cloud-item:nth-child(8) { animation-delay: 3.5s; }
.category-cloud-item:nth-child(9) { animation-delay: 4s; }
.category-cloud-item:nth-child(10) { animation-delay: 4.5s; }

.tag-cloud-item:nth-child(1) { animation-delay: 0.3s; }
.tag-cloud-item:nth-child(2) { animation-delay: 0.8s; }
.tag-cloud-item:nth-child(3) { animation-delay: 1.3s; }
.tag-cloud-item:nth-child(4) { animation-delay: 1.8s; }
.tag-cloud-item:nth-child(5) { animation-delay: 2.3s; }
.tag-cloud-item:nth-child(6) { animation-delay: 2.8s; }
.tag-cloud-item:nth-child(7) { animation-delay: 3.3s; }
.tag-cloud-item:nth-child(8) { animation-delay: 3.8s; }
.tag-cloud-item:nth-child(9) { animation-delay: 4.3s; }
.tag-cloud-item:nth-child(10) { animation-delay: 4.8s; }

/* 优化 float 动画 - 减少移动距离 */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    33% {
        transform: translateY(-4px) rotate(0.5deg);
    }
    66% {
        transform: translateY(2px) rotate(-0.5deg);
    }
}

/* ============================================
   26. 工具类 / Utilities
   ============================================ */
.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--space-lg);
}

.mb-lg {
    margin-bottom: var(--space-lg);
}

.hidden {
    display: none !important;
}

/* ============================================
   27. 加载动画 / Loading Animation
   ============================================ */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-surface-2);
    border-top-color: var(--bg-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   28. 滚动条 / Custom Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-surface-3);
    border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-surface-3);
}