/* ===========================================
   Diming Blog - 主样式表
   =========================================== */

/* CSS 变量
   =========================================== */
:root {
    /* 颜色 */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-lighter: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-heading: #0f172a;

    /* 排版 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    --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;
    --line-height-tight: 1.3;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* 布局 */
    --container-width: 1200px;
    --content-width: 740px;
    --sidebar-width: 340px;
    --gap: 2rem;

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

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
}

/* CSS Reset 与基础样式
   =========================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器
   =========================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 屏幕阅读器辅助
   =========================================== */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

/* ===========================================
   头部
   =========================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

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

/* 站点品牌 */
.site-branding {
    flex-shrink: 0;
}

.site-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1.2;
}

.site-title a {
    color: var(--color-heading);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.site-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: 2px;
    display: none;
}

/* 主导航 */
.main-navigation {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.primary-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
}

.primary-menu .menu-item {
    position: relative;
}

.primary-menu .nav-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* 当前菜单项 */
.primary-menu .current-menu-item > .nav-link,
.primary-menu .current_page_item > .nav-link {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* 子菜单 */
.sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs) 0;
    list-style: none;
    z-index: 10;
}

.sub-menu .nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0;
    white-space: nowrap;
}

.menu-item:hover > .sub-menu {
    display: block;
}

/* 子菜单的子菜单 */
.sub-menu .sub-menu {
    top: 0;
    left: 100%;
    margin-left: 2px;
}

/* 移动端菜单切换按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    position: relative;
}

.menu-toggle-icon,
.menu-toggle-icon::before,
.menu-toggle-icon::after {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
    position: absolute;
    left: 9px;
}

.menu-toggle-icon {
    top: 50%;
    transform: translateY(-50%);
}

.menu-toggle-icon::before {
    content: '';
    top: -7px;
}

.menu-toggle-icon::after {
    content: '';
    top: 7px;
}

/* 搜索切换按钮 */
.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

/* 搜索条 */
.search-bar {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    background: var(--color-bg);
}

.search-bar .search-form {
    max-width: 500px;
    margin: 0 auto;
}

/* ===========================================
   搜索表单
   =========================================== */
.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form label {
    flex: 1;
}

.search-form .search-field {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition-fast);
    outline: none;
}

.search-form .search-field:focus {
    border-color: var(--color-primary);
}

.search-form .search-submit {
    padding: 0.625rem 1.25rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

/* ===========================================
   主内容区域
   =========================================== */
.site-main {
    min-height: 60vh;
    padding: var(--spacing-2xl) 0;
}

.container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
}

.content-area {
    flex: 1;
    min-width: 0;
    max-width: 100%;
}

.content-area--full {
    max-width: var(--content-width);
    margin: 0 auto;
    flex: none;
    width: 100%;
}

/* ===========================================
   侧边栏
   =========================================== */
.widget-area {
    width: var(--sidebar-width);
    flex-shrink: 0;
}

.widget {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.widget-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.widget ul {
    list-style: none;
}

.widget ul li {
    padding: 0.375rem 0;
    border-bottom: 1px solid var(--color-border-light);
}

.widget ul li:last-child {
    border-bottom: none;
}

.widget ul li a {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

/* ===========================================
   文章卡片（首页/归档）
   =========================================== */
.posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

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

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

.post-card-thumbnail {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.post-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

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

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.post-card-category {
    display: inline-block;
    padding: 0.125rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.post-card-category:hover {
    opacity: 0.8;
}

.post-card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-sm);
}

.post-card-title a {
    color: var(--color-heading);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.post-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-md);
}

.post-card-excerpt p {
    margin-bottom: 0;
}

.post-card-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--color-text-lighter);
}

/* ===========================================
   文章详情页
   =========================================== */
.single-post .post-thumbnail {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.post-thumbnail-img {
    width: 100%;
    height: auto;
    display: block;
}

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

.entry-meta-top {
    margin-bottom: var(--spacing-md);
}

.entry-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    text-decoration: none;
}

.entry-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: var(--line-height-tight);
    color: var(--color-heading);
    margin-bottom: var(--spacing-md);
}

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.author-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.author-avatar img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
    color: var(--color-text);
}

/* 文章正文 */
.entry-content {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text);
}

.entry-content > * {
    margin-bottom: 1.5em;
}

.entry-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-heading);
    margin-top: 2em;
    margin-bottom: 0.75em;
    padding-bottom: 0.375em;
    border-bottom: 1px solid var(--color-border);
}

.entry-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-heading);
    margin-top: 1.75em;
    margin-bottom: 0.5em;
}

.entry-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-heading);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.entry-content p {
    margin-bottom: 1.5em;
}

.entry-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

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

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.entry-content ul,
.entry-content ol {
    padding-left: 1.5em;
    margin-bottom: 1.5em;
}

.entry-content li {
    margin-bottom: 0.5em;
}

.entry-content blockquote {
    margin: 2em 0;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-left: 4px solid var(--color-primary);
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--color-text-light);
}

.entry-content blockquote p:last-child {
    margin-bottom: 0;
}

.entry-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: 1.5em;
}

.entry-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    padding: 0.125em 0.375em;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

.entry-content pre code {
    padding: 0;
    background: transparent;
    border-radius: 0;
}

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5em;
}

.entry-content th,
.entry-content td {
    padding: 0.625rem 1rem;
    border: 1px solid var(--color-border);
    text-align: left;
}

.entry-content th {
    background: var(--color-bg-alt);
    font-weight: 600;
}

.entry-content .wp-block-image figcaption {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: 0.5em;
}

/* 页脚元数据 */
.entry-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.entry-footer span {
    display: inline;
}

.entry-footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.entry-footer a:hover {
    text-decoration: underline;
}

/* 页面内分页 */
.page-links {
    clear: both;
    margin: var(--spacing-xl) 0;
    font-size: var(--font-size-sm);
}

.page-links a,
.page-links > span {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin: 0 2px;
    text-decoration: none;
}

.page-links a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.page-links > span {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ===========================================
   文章导航（上一篇/下一篇）
   =========================================== */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.post-navigation a {
    display: block;
    text-decoration: none;
    color: var(--color-text);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.post-navigation a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.nav-meta {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
    margin-bottom: 0.25rem;
}

.nav-title {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

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

/* ===========================================
   分页导航
   =========================================== */
.pagination {
    margin: var(--spacing-2xl) 0;
}

.pagination-list {
    display: flex;
    justify-content: center;
    gap: 0.375rem;
    list-style: none;
    flex-wrap: wrap;
}

.pagination-list li {
    margin: 0;
}

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-link.current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.pagination .prev,
.pagination .next {
    font-weight: 500;
}

/* ===========================================
   评论
   =========================================== */
.comments-area {
    margin: var(--spacing-2xl) 0;
}

.comments-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: var(--spacing-xl);
}

.comment-list {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.comment-item {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.comment-item:first-child {
    padding-top: 0;
}

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

.comment-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.comment-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.author-details .fn {
    display: block;
    font-weight: 600;
    font-style: normal;
    font-size: var(--font-size-base);
}

.author-details .fn a {
    color: var(--color-heading);
    text-decoration: none;
}

.author-details .fn a:hover {
    color: var(--color-primary);
}

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

.comment-date a {
    color: inherit;
    text-decoration: none;
}

.comment-awaiting-moderation {
    font-size: var(--font-size-sm);
    color: #d97706;
    font-style: italic;
}

.comment-content {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
}

.comment-content p {
    margin-bottom: 0.75em;
}

.comment-content p:last-child {
    margin-bottom: 0;
}

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

.comment-actions a {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.comments-navigation {
    margin-bottom: var(--spacing-xl);
}

.nav-links {
    display: flex;
    justify-content: space-between;
}

.nav-links a {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

/* 评论表单 */
.comment-reply-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: var(--spacing-lg);
}

.comment-form p {
    margin-bottom: var(--spacing-md);
}

.comment-form label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition-fast);
    outline: none;
}

.comment-form input:focus,
.comment-form textarea:focus {
    border-color: var(--color-primary);
}

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

.comment-form .form-submit {
    margin-bottom: 0;
}

/* ===========================================
   404 页面
   =========================================== */
.error-404 {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-title {
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.error-message {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.error-content {
    max-width: 500px;
    margin: 0 auto;
}

.error-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.error-search {
    margin-bottom: var(--spacing-2xl);
}

.error-search .search-form {
    max-width: 400px;
    margin: 0 auto;
}

.error-widgets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    text-align: left;
    margin-bottom: var(--spacing-2xl);
}

.error-widget h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-heading);
}

.error-widget ul {
    list-style: none;
}

.error-widget ul li {
    padding: 0.25rem 0;
}

.error-widget ul li a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.error-widget ul li a:hover {
    color: var(--color-primary);
}

.error-home-link {
    margin-top: var(--spacing-xl);
}

/* ===========================================
   归档页头部
   =========================================== */
.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-heading);
}

.archive-description {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-light);
}

.search-query {
    color: var(--color-primary);
}

.search-again {
    margin-top: var(--spacing-lg);
}

.search-again .search-form {
    max-width: 400px;
}

/* ===========================================
   按钮
   =========================================== */
.button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: inherit;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.button-primary {
    background: var(--color-primary);
    color: #fff;
}

.button-primary:hover {
    background: var(--color-primary-hover);
    color: #fff;
}

/* ===========================================
   底部
   =========================================== */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-3xl);
}

.footer-widgets {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--color-border);
}

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

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

.footer-widget-area .widget-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-heading);
    border-bottom-color: var(--color-border);
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
}

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

.footer-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.footer-menu a {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.site-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
}

.site-info a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ===========================================
   响应式设计
   =========================================== */

/* 平板 */
@media (max-width: 1024px) {
    .content-area {
        max-width: 100%;
    }

    .widget-area {
        width: 100%;
    }

    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动端 */
@media (max-width: 768px) {
    .header-inner {
        height: 56px;
    }

    .main-navigation {
        order: -1;
        flex: 0;
    }

    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .primary-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-sm);
        gap: 0;
    }

    .primary-menu.toggled {
        display: flex;
    }

    .primary-menu .menu-item {
        width: 100%;
    }

    .primary-menu .nav-link {
        padding: 0.75rem 1rem;
        border-radius: var(--radius-md);
    }

    .sub-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: var(--spacing-lg);
        background: transparent;
    }

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

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .entry-title {
        font-size: var(--font-size-2xl);
    }

    .post-navigation {
        grid-template-columns: 1fr;
    }

    .footer-widgets-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }

    .error-widgets {
        grid-template-columns: 1fr;
    }

    .error-title {
        font-size: 4rem;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .entry-content {
        font-size: var(--font-size-base);
    }

    .entry-meta {
        font-size: 0.8125rem;
    }
}

/* ===========================================
   学校/区域系统 - 新增样式
   =========================================== */

/* --- 面包屑 --- */
.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.breadcrumb a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.breadcrumb-sep {
    margin: 0 0.5rem;
    color: var(--color-text-lighter);
}

.breadcrumb-current {
    color: var(--color-text);
    font-weight: 500;
}

/* --- 区域总览页 header --- */
.districts-header .page-description {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-light);
}

/* --- 区域网格 --- */
.districts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.district-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-base);
    position: relative;
}

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


.district-card-body {
    flex: 1;
    min-width: 0;
}

.district-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: 2px;
}

.district-card-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.district-card-arrow {
    flex-shrink: 0;
    font-size: var(--font-size-lg);
    color: var(--color-text-lighter);
    transition: transform var(--transition-fast);
}

.district-card:hover .district-card-arrow {
    transform: translateX(4px);
    color: var(--color-primary);
}

.districts-content {
    margin-top: var(--spacing-2xl);
}

/* --- 区域归档页 header --- */
.district-archive-header {
    margin-bottom: var(--spacing-xl);
}

.district-archive-header .page-title-badge {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 0.125rem 0.75rem;
    border-radius: var(--radius-full);
    vertical-align: middle;
    margin-left: var(--spacing-sm);
}

.district-archive-header .page-description {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-light);
}

/* --- 学校卡片网格 --- */
.schools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.school-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.school-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.school-card-thumbnail {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.school-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.school-card-thumbnail--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    color: var(--color-text-lighter);
}

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

.school-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: var(--spacing-sm);
}

.school-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: var(--spacing-md);
}

.school-card-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.school-card-meta-item svg {
    flex-shrink: 0;
}

.school-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
}

.school-card-post-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
}

.school-card-read-more {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
}

/* --- 学校详情页（三级） --- */
.school-single {
    margin-bottom: var(--spacing-2xl);
}

/* 学校头部区域 */
.school-hero {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-2xl);
}

.school-hero-thumbnail {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.school-hero-img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 400px;
    object-fit: cover;
}

.school-hero-body {
    max-width: var(--content-width);
}

.school-hero-top {
    margin-bottom: var(--spacing-sm);
}

.school-hero-badge {
    display: inline-block;
}

.school-hero-badge a {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.school-hero-badge a:hover {
    opacity: 0.8;
}

.school-hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: var(--line-height-tight);
    color: var(--color-heading);
    margin-bottom: var(--spacing-md);
}

.school-hero-motto {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-primary);
}

.school-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.school-hero-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    padding: 0.375rem 0.75rem;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
}

.school-hero-meta-item svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.school-hero-meta-item--link a {
    color: var(--color-primary);
    text-decoration: none;
}

.school-hero-meta-item--link a:hover {
    text-decoration: underline;
}

/* 区域标题 */
.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

/* 学校简介 */
.school-about {
    margin-bottom: var(--spacing-2xl);
}

.school-about-content {
    max-width: var(--content-width);
}

/* --- 关联文章列表 --- */
.school-posts {
    margin-bottom: var(--spacing-2xl);
}

.school-posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.school-post-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.school-post-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.school-post-thumbnail {
    flex-shrink: 0;
    width: 120px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

.school-post-body {
    flex: 1;
    min-width: 0;
}

.school-post-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 0.375rem;
}

.school-post-title a {
    color: var(--color-heading);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.school-post-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
    margin-bottom: 0.5rem;
}

.school-post-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.school-posts--empty .school-posts-empty-msg {
    padding: var(--spacing-2xl);
    text-align: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
}

.school-posts-empty-msg p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.school-posts-empty-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
}

.school-posts-empty-msg .button {
    margin-top: var(--spacing-md);
}

/* --- 无结果提示 --- */
.no-results {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    color: var(--color-text-light);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
}

/* ===========================================
   响应式 - 学校/区域系统
   =========================================== */

/* 平板 */
@media (max-width: 1024px) {
    .districts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .districts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .schools-grid {
        grid-template-columns: 1fr;
    }

    .school-hero-title {
        font-size: var(--font-size-2xl);
    }

    .school-post-item {
        flex-direction: column;
    }

    .school-post-thumbnail {
        width: 100%;
        height: 160px;
    }
}

@media (max-width: 480px) {
    .districts-grid {
        grid-template-columns: 1fr;
    }

    .school-hero-meta {
        flex-direction: column;
    }
}