/**
 * Giath Theme - Main Stylesheet
 * 
 * @package Giath
 * @since 1.0.0
 */

/* ========================================
   1. CSS变量定义
   ======================================== */
:root {
    /* 颜色方案 */
    --color-primary: #0969da;
    --color-primary-hover: #0550ae;
    --color-secondary: #ff0000;
    --color-success: #1a7f37;
    --color-warning: #bf8700;
    --color-danger: #cf222e;

    /* 文字颜色 */
    --color-text-primary: #24292f;
    --color-text-secondary: #57606a;
    --color-text-tertiary: #6e7781;
    --color-text-inverse: #ffffff;

    /* 背景颜色 */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f6f8fa;
    --color-bg-tertiary: #eaeef2;
    --color-bg-overlay: rgba(0, 0, 0, 0.5);

    /* 边框颜色 */
    --color-border-default: #d0d7de;
    --color-border-muted: #e5e7eb;

    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* 字体 */
    --font-primary: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;

    /* 字体大小 */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    /* 过渡 */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* 容器宽度 */
    --container-max-width: 1280px;
    --content-max-width: 820px;
}

/* ========================================
   2. 基础样式重置
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
}

/* 辅助功能 */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link:focus {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100000;
    padding: 15px 25px;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: 600;
    text-decoration: none;
}

/* ========================================
   3. 布局容器
   ======================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.main-container {
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-2xl);
}

/* ========================================
   4. 头部导航
   ======================================== */
.site-header {
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-default);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--spacing-lg);
}

/* Logo */
.site-branding {
    display: flex;
    align-items: center;
}

.custom-logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

.custom-logo-link:hover {
    transform: scale(1.02);
    color: var(--color-text-primary);
}

.custom-logo-link i {
    font-size: 2rem;
}

.site-title {
    font-size: var(--font-size-xl);
}

/* 导航菜单 */
.main-navigation {
    flex: 1;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu .current-menu-item>a {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
}

/* 子菜单 */
.nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.nav-menu li:hover>.sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .sub-menu a {
    padding: var(--spacing-sm) var(--spacing-md);
}

/* 头部操作区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-icon,
.user-login {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.search-icon:hover,
.user-login:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

/* 搜索框 */
.search-form-wrapper {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-default);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.search-form-wrapper.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-form-container {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
}

.search-form {
    flex: 1;
    display: flex;
    gap: var(--spacing-sm);
}

.search-field {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.search-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.search-submit {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-md);
    font-weight: 600;
}

.search-submit:hover {
    background: var(--color-primary-hover);
}

.search-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

.search-close:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.mobile-menu-toggle:hover {
    background: var(--color-bg-secondary);
}

.mobile-menu-toggle .bar {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* 移动端导航 */
.mobile-navigation {
    display: none;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-default);
}

.mobile-navigation.active {
    display: block;
}

.mobile-nav-menu {
    padding: var(--spacing-md);
}

.mobile-nav-menu a {
    display: block;
    padding: var(--spacing-md);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
}

.mobile-nav-menu a:hover {
    background: var(--color-bg-secondary);
}

/* ========================================
   5. 首页横幅
   ======================================== */
.hero-banner {
    margin-bottom: var(--spacing-2xl);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
}

.banner-slider {
    position: relative;
    min-height: 320px;
}

.banner-slide {
    display: none;
    padding: var(--spacing-2xl);
}

.banner-slide.active {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2xl);
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-content {
    flex: 1;
    z-index: 2;
}

.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    color: var(--color-text-inverse);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

.banner-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.banner-button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-text-inverse);
    color: var(--color-primary);
    font-weight: 600;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.banner-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--color-primary-hover);
}

.banner-visual {
    position: relative;
    width: 400px;
    height: 280px;
}

.banner-shape {
    position: absolute;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.banner-shape-1 {
    width: 200px;
    height: 200px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.banner-shape-2 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: 20%;
    transform: rotate(45deg);
    animation-delay: 1s;
}

.banner-shape-3 {
    width: 100px;
    height: 100px;
    bottom: 10%;
    left: 40%;
    border-radius: var(--radius-full);
    animation-delay: 2s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* ========================================
   6. 文章卡片
   ======================================== */
.posts-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.post-card {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--spacing-lg);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border-muted);
    transition: all var(--transition-base);
}

.post-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-default);
    transform: translateY(-2px);
}

.post-thumbnail {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 16/10;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.placeholder-thumb {
    width: 100%;
    height: 100%;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    font-size: 3rem;
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-secondary);
    color: var(--color-text-inverse);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 4px;
}

.post-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.post-categories {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.category-link {
    display: inline-block;
    padding: 4px var(--spacing-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.category-link:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.post-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1.4;
}

.post-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.post-title a:hover {
    color: var(--color-primary);
}

.post-excerpt {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

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

.meta-item img {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
}

.meta-item a {
    color: var(--color-text-secondary);
}

.meta-item a:hover {
    color: var(--color-primary);
}

.meta-separator {
    color: var(--color-border-default);
}

.post-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag-badge {
    padding: 4px var(--spacing-sm);
    background: transparent;
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.tag-badge:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.post-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: var(--spacing-sm);
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.read-more:hover {
    gap: var(--spacing-sm);
}

.bookmark-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

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

/* ========================================
   7. 侧边栏
   ======================================== */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.widget {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.widget-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.widget ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.widget ul li {
    padding: var(--spacing-xs) 0;
}

.widget ul li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.widget ul li a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-xs);
}

/* ========================================
   8. 详情页样式
   ======================================== */
.single-page .content-area {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
}

.entry-header {
    margin-bottom: var(--spacing-xl);
}

.entry-categories {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.category-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.entry-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.entry-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border-muted);
    border-bottom: 1px solid var(--color-border-muted);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.entry-meta .meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.entry-featured-image {
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.entry-featured-image img {
    width: 100%;
    height: auto;
}

.entry-content {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-text-primary);
}

.entry-content h2 {
    font-size: var(--font-size-3xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
}

.entry-content h3 {
    font-size: var(--font-size-2xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.entry-content h4 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.entry-content p {
    margin-bottom: var(--spacing-lg);
}

.entry-content ul,
.entry-content ol {
    list-style: disc;
    list-style-position: inside;
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
}

.entry-content ol {
    list-style: decimal;
}

.entry-content li {
    margin-bottom: var(--spacing-sm);
}

.entry-content blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-style: italic;
}

.entry-content pre {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: #1e1e1e;
    color: #d4d4d4;
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.entry-content code {
    padding: 2px 6px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.entry-content pre code {
    padding: 0;
    background: none;
}

.entry-content img {
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-md);
}

.entry-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border-muted);
}

.entry-tags {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.entry-tags i {
    color: var(--color-text-tertiary);
}

.tag-link {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.tag-link:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.entry-share {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.share-title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

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

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-inverse);
    transition: all var(--transition-fast);
}

.share-button.twitter {
    background: #1da1f2;
}

.share-button.facebook {
    background: #1877f2;
}

.share-button.weibo {
    background: #e6162d;
}

.share-button.copy-link {
    background: var(--color-text-secondary);
}

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

/* 作者信息框 */
.author-box {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
}

.author-avatar img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
}

.author-info {
    flex: 1;
}

.author-name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.author-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.author-posts-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

/* 相关文章 */
.related-posts {
    margin: var(--spacing-2xl) 0;
}

.related-posts-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.related-post-item {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.related-post-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-default);
    transform: translateY(-2px);
}

.related-post-thumbnail {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.related-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.related-post-item:hover .related-post-thumbnail img {
    transform: scale(1.05);
}

.related-post-title {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.related-post-title a {
    color: var(--color-text-primary);
}

.related-post-title a:hover {
    color: var(--color-primary);
}

.related-post-meta {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* ========================================
   9. 面包屑导航
   ======================================== */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.breadcrumbs a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.breadcrumbs .current {
    color: var(--color-text-primary);
    font-weight: 600;
}

.breadcrumbs .separator {
    color: var(--color-text-tertiary);
}

/* ========================================
   10. 分页导航
   ======================================== */
.pagination {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
}

.pagination .nav-links {
    display: flex;
    gap: var(--spacing-xs);
}

.pagination a,
.pagination .current {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.pagination .current {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

/* ========================================
   11. 底部
   ======================================== */
.site-footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-default);
    margin-top: var(--spacing-2xl);
}

.footer-widgets {
    padding: var(--spacing-2xl) 0;
}

.footer-widgets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.footer-widget-area .widget {
    border: none;
    padding: 0;
}

.footer-widget-area .widget-title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border-default);
}

.footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.footer-menu {
    display: flex;
    gap: var(--spacing-md);
}

.footer-menu a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-menu a:hover {
    color: var(--color-primary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    transform: translateY(-2px);
}

/* ========================================
   12. 返回顶部按钮
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-primary-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   13. 评论区
   ======================================== */
.comments-area {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border-muted);
}

.comments-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.comment {
    display: flex;
    gap: var(--spacing-md);
}

.comment-author img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
}

.comment-body {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.comment-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.comment-author-name {
    font-weight: 600;
}

.comment-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.comment-content p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.reply {
    margin-top: var(--spacing-sm);
}

.comment-reply-link {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 600;
}

.children {
    margin-left: var(--spacing-2xl);
    margin-top: var(--spacing-lg);
}

.comment-form {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
}

.comment-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.comment-form textarea {
    min-height: 120px;
    resize: vertical;
}

.form-submit {
    margin-top: var(--spacing-md);
}

.submit {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.submit:hover {
    background: var(--color-primary-hover);
}

/* ========================================
   14. 页面模板
   ======================================== */
.page-template .page-wrapper {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.page-content {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
}

.page-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.page-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

.page-featured-image {
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.page-entry-content {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

/* ========================================
   15. 404页面
   ======================================== */
.error-404 {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.error-404 .page-title {
    font-size: 120px;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-tertiary);
}

.error-404 .page-content {
    max-width: 600px;
    margin: 0 auto;
}

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

.text-right {
    text-align: right;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-xs);
}

.mt-2 {
    margin-top: var(--spacing-sm);
}

.mt-3 {
    margin-top: var(--spacing-md);
}

.mt-4 {
    margin-top: var(--spacing-lg);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-xs);
}

.mb-2 {
    margin-bottom: var(--spacing-sm);
}

.mb-3 {
    margin-bottom: var(--spacing-md);
}

.mb-4 {
    margin-bottom: var(--spacing-lg);
}