/* ============================================
   博客页面样式
   ============================================ */

.blog-page {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 80px;
    min-height: 70vh;
}

/* 面包屑 */
.qsg-breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: 32px;
    padding: 12px 0;
}

.qsg-breadcrumb a {
    color: var(--color-text-secondary);
}

.qsg-breadcrumb a:hover {
    color: var(--color-purple-light);
}

.qsg-breadcrumb .sep {
    margin: 0 8px;
    color: var(--color-text-muted);
}

/* 分类导航 */
.category-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.category-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.category-nav-item:hover {
    color: var(--color-purple-light);
    border-color: var(--color-border-hover);
    background: var(--color-bg-card-hover);
}

.category-nav-item.active {
    color: #fff;
    background: var(--gradient-primary);
    border-color: transparent;
}

.category-nav-item.active .category-count {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.category-count {
    font-size: 0.7rem;
    padding: 1px 7px;
    border-radius: var(--radius-full);
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-purple-light);
}

/* 页面头部 */
.page-header {
    text-align: center;
    margin-bottom: 48px;
}

.page-title {
    font-size: var(--font-size-3xl);
    color: var(--color-text-white);
    margin-bottom: 12px;
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* 文章列表网格 */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 文章卡片 */
.post-card {
    padding: 0;
    overflow: hidden;
}

.post-card-link {
    display: block;
    color: inherit;
}

.post-card-link:hover {
    color: inherit;
}

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

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

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

.post-card-img-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-bg-section);
}

.post-card-body {
    padding: 24px;
}

.post-card-date {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-purple-light);
    margin-bottom: 8px;
}

.post-card-title {
    font-size: var(--font-size-lg);
    color: var(--color-text-white);
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-more {
    font-size: var(--font-size-sm);
    color: var(--color-purple-light);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.post-card:hover .post-card-more {
    color: var(--color-purple);
}

/* 分页 */
.pagination {
    margin-top: 48px;
    text-align: center;
}

.pagination .nav-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.pagination .page-numbers:hover {
    border-color: var(--color-purple);
    color: var(--color-purple-light);
}

.pagination .page-numbers.current {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-text-white);
}

.no-posts {
    text-align: center;
    color: var(--color-text-muted);
    padding: 60px 0;
    font-size: var(--font-size-lg);
}

/* ===== 文章详情 ===== */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 32px;
}

.article-title {
    font-size: var(--font-size-3xl);
    color: var(--color-text-white);
    margin-bottom: 16px;
    line-height: 1.3;
}

.article-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.article-meta a {
    color: var(--color-purple-light);
}

.meta-sep {
    margin: 0 10px;
}

.article-featured-image {
    margin-bottom: 32px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

/* 文章内容排版 */
.article-content {
    color: var(--color-text-secondary);
    line-height: 1.9;
    font-size: var(--font-size-base);
}

.article-content h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-text-white);
    margin: 40px 0 16px;
}

.article-content h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text-white);
    margin: 32px 0 12px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    margin: 24px 0;
    padding: 16px 24px;
    border-left: 4px solid var(--color-purple);
    background: var(--color-bg-card);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content img {
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.article-content a {
    color: var(--color-purple-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content code {
    background: var(--color-bg-card);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.article-content pre {
    background: var(--color-bg-card);
    padding: 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 20px;
}

/* 文章底部 */
.article-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.tag {
    display: inline-block;
    padding: 4px 14px;
    font-size: var(--font-size-xs);
    color: var(--color-purple-light);
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--color-purple);
    color: var(--color-text-white);
    border-color: var(--color-purple);
}

/* 上下篇导航 */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.nav-prev,
.nav-next {
    display: block;
    padding: 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--color-purple);
    color: inherit;
}

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

.nav-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.nav-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 404 页面 */
.error-404 {
    text-align: center;
    padding: 100px 0;
}

.error-code {
    font-size: 8rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

.error-title {
    font-size: var(--font-size-2xl);
    color: var(--color-text-white);
    margin-bottom: 12px;
}

.error-desc {
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

/* 博客响应式 */
@media (max-width: 768px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }

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

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

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