/* ========================================
   文章页面专用样式
   ======================================== */

/* 文章筛选器 */
.articles-filters {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 80px;
    z-index: 100;
}

/* 文章分类按钮（与 gallery 统一，避免分隔/间距异常） */
.articles-filters .filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.articles-filters .filter-btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 0;
}

.articles-filters .filter-btn:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.articles-filters .filter-btn.active {
    background-color: var(--color-primary);
    color: white;
}

/* 文章列表 */
.articles-section {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.articles-list {
    display: grid;
    gap: var(--spacing-xl);
}

.article-list-item {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;

    /* 统一每条卡片高度（桌面端强制等高） */
    height: 260px;
}

.article-list-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.article-list-image {
    position: relative;
    /* 图片区域与卡片等高，确保“缩略图高度=行高” */
    height: 100%;
    overflow: hidden;
}

.article-list-image img {
    width: 100%;
    height: 100%;
    /* 保持视觉统一：填满容器并裁切（不拉伸） */
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-slow);
}

.article-list-item:hover .article-list-image img {
    transform: scale(1.05);
}

.article-list-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;

    /* 防止内容撑开卡片高度（与 height:220 配合） */
    height: 100%;
    overflow: hidden;
}

.article-list-category {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background-color: var(--color-primary);
    color: white;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    width: fit-content;
}

.article-list-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    color: var(--color-text-primary);

    /* 标题太长时不要把卡片撑高 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-clamp: 2;
}

.article-list-excerpt {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);

    /* 摘要固定 2 行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-clamp: 2;
}

.article-list-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination-btn {
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
}

.pagination-btn.active {
    background-color: var(--color-primary);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   文章详情页面样式
   ======================================== */

.article-hero {
    position: relative;
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    background:
        var(--page-header-bg-image, none),
        linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}

.article-hero.has-bg-image {
    overflow: hidden;
}

/* 兼容：当通过 JS 注入背景图时，让整体对比度更稳定 */
.article-hero.has-bg-image .article-hero-overlay {
    background: rgba(0, 0, 0, 0.35);
}

.article-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.breadcrumb {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.breadcrumb a {
    transition: opacity var(--transition-fast);
}

.breadcrumb a:hover {
    opacity: 0.7;
}

.article-hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.article-category {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.article-detail-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.article-detail-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    opacity: 0.95;
}

.meta-author {
    font-weight: 500;
}

/* 文章内容区域 */
.article-content-wrapper {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.article-main {
    max-width: 800px;
    margin: 0 auto;
}

.article-body {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--color-text-primary);
}

.article-body h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    margin: var(--spacing-2xl) 0 var(--spacing-md);
    color: var(--color-text-primary);
}

.article-body h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    color: var(--color-text-primary);
}

.article-body p {
    margin-bottom: var(--spacing-md);
    /* text-indent: 2em; */
}

.article-body img {
    width: 100%;
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
    box-shadow: var(--shadow-md);
}

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

.article-body ul,
.article-body ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    list-style: disc;
}

.article-body li {
    margin-bottom: var(--spacing-xs);
}

/* 文章页脚 */
.article-footer-section {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.tag {
    padding: 0.5rem 1rem;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

/* =============================
   分享按钮（文章详情页）
   ============================= */

.article-share {
    margin-top: var(--spacing-xl);
}

.article-share h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}
.article-share h3 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}
.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.70rem 1.1rem;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    user-select: none;
}

.share-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.share-btn:hover {
    background-color: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
    border-color: transparent;
}

.share-btn:active {
    transform: translateY(-1px);
}

.share-btn.is-success {
    background-color: rgba(46, 213, 115, 0.12);
    border-color: rgba(46, 213, 115, 0.35);
    color: var(--color-text-primary);
}

.share-hint {
    margin-top: 0.75rem;
    color: var(--color-text-tertiary);
    font-size: 0.95rem;
    min-height: 1.2em;
}

[data-theme="dark"] .share-btn {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.16);
}

[data-theme="dark"] .share-btn:hover {
    background-color: var(--color-primary);
    border-color: transparent;
}





/* share button icon sizing */
.share-btn .iconfont {
  font-size: 18px;
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  vertical-align: middle;
  flex: 0 0 auto;
}

/* 确保 ::before 可见且垂直居中 */
.share-btn .iconfont::before {
  display: inline-block;
  line-height: 1;
  vertical-align: middle;
}

/* 让按钮文本也居中对齐（尤其是移动端单列） */
.share-btn {
  align-items: center;
}

/* 相关文章 */
.related-articles {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.related-articles h3 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.related-card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.related-card-content {
    padding: var(--spacing-md);
}

.related-card-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    line-clamp: 2;
}

.related-card-date {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
}

/* ========================================
   Exhibition detail meta (location/date/address)
   ======================================== */

.exhibition-meta {
    margin-top: var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-sm);
    max-width: 900px;
}

/* wide-screen: keep the original single-line meta */
.exhibition-meta-wide {
    display: flex;
}

.exhibition-meta-item {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    min-width: 0;
}

@media (max-width: 640px) {
    .exhibition-meta-wide {
        display: none;
    }

    .exhibition-meta {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .exhibition-meta-item--full {
        grid-column: auto;
    }
}

@media (min-width: 641px) {
    .exhibition-meta {
        display: none;
    }
}

@media (min-width: 1200px) {
    /* make the hero content breathe a bit on very wide screens */
    .article-hero-content {
        max-width: 980px;
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .article-list-item {
        grid-template-columns: 280px 1fr;
    }
}

@media (max-width: 768px) {
    .articles-filters {
        top: 70px;
    }

    .articles-filters .filter-buttons {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .articles-filters .filter-buttons::-webkit-scrollbar {
        display: none;
    }

    .articles-filters .filter-btn {
        white-space: nowrap;
    }

    .article-list-item {
        grid-template-columns: 1fr;
        height: auto;
    }

    .article-list-image {
        height: 200px;
    }

    .article-list-content {
        height: auto;
        overflow: visible;
    }
}

@media (max-width: 640px) {
    .article-body {
        font-size: 1rem;
    }

    .article-body p {
        text-indent: 0;
    }

    .share-buttons {
        flex-direction: column;
    }

    .share-btn {
        width: 100%;
        justify-content: center;
    }
}