/**
 * 博客文章页面样式 - QuantaPay
 * 专门针对文章详情页的样式设计
 */

/* 面包屑导航 */
.breadcrumb-nav {
    background: var(--gray-50);
    border-bottom: 1px solid var(--border-light);
    padding: var(--spacing-md) 0;
    position: relative;
    margin-top: 0;
    margin-bottom: 0;
    z-index: 1; /* 确保不覆盖语言切换器 */
}

.breadcrumb-nav .container {
    display: flex;
    align-items: center;
    min-height: 52px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: var(--spacing-sm);
    color: var(--text-muted);
    font-weight: 500;
}

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

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

/* 文章布局 */
.post-layout {
    background: var(--gray-50);
    min-height: calc(100vh - 160px);
    padding: var(--spacing-lg) 0;
}

.post-wrapper {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-3xl);
    align-items: start;
}

@media (max-width: 1024px) {
    .post-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .post-sidebar {
        order: 2;
    }
}

/* 文章内容 */
.post-content {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

/* 加载状态 */
.post-loading {
    padding: var(--spacing-2xl);
}

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

.skeleton-title {
    height: 2.5rem;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-meta {
    height: 1rem;
    width: 60%;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-image {
    height: 300px;
    background: var(--gray-200);
    border-radius: var(--radius-md);
    animation: pulse 1.5s ease-in-out infinite;
}

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

.skeleton-text {
    height: 1rem;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-text.short {
    width: 70%;
}

/* 文章头部 */
.post-header {
    padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
}

.post-title {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--text-primary);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

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

.post-meta-item i {
    color: var(--primary-blue);
    font-size: 0.875rem;
}

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

.post-category {
    background: var(--primary-blue);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-2xl);
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-fast);
}

.post-category:hover {
    background: var(--primary-purple);
}

.post-excerpt {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: var(--spacing-lg) 0 0 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gray-50);
    border-left: 4px solid var(--primary-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    position: relative;
}

.post-excerpt p {
    margin: 0;
    font-style: italic;
    font-weight: 400;
}

.post-excerpt::before {
    content: '"';
    position: absolute;
    top: -8px;
    left: 8px;
    font-size: 3rem;
    color: var(--primary-blue);
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

/* 文章图片 */
.post-featured-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
    margin-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
    .post-featured-image {
        height: 250px;
    }
}

/* 文章正文 */
.post-body {
    padding: var(--spacing-2xl);
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
    margin: var(--spacing-2xl) 0 var(--spacing-lg) 0;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.post-body h1 { font-size: 2.25rem; }
.post-body h2 { font-size: 1.875rem; }
.post-body h3 { font-size: 1.5rem; }
.post-body h4 { font-size: 1.25rem; }
.post-body h5 { font-size: 1.125rem; }
.post-body h6 { font-size: 1rem; }

.post-body h2 {
    border-bottom: 2px solid var(--border-light);
    padding-bottom: var(--spacing-sm);
}

.post-body p {
    margin: 0 0 var(--spacing-xl) 0;
    text-align: justify;
    line-height: 1.8;
}

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

.post-body li {
    margin-bottom: var(--spacing-sm);
}

.post-body blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--gray-50);
    border-left: 4px solid var(--primary-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.post-body code {
    background: var(--gray-100);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875em;
    color: var(--primary-purple);
}

.post-body pre {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: #2d3748;
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.post-body pre code {
    background: none;
    padding: 0;
    color: #e2e8f0;
    font-size: 0.875rem;
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
}

.post-body a {
    color: var(--primary-blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition-fast);
}

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

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

.post-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.post-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.post-info-item:last-child {
    border-bottom: none;
}

.post-info-label {
    font-weight: 500;
    color: var(--text-primary);
}

/* 目录 */
.toc-nav {
    font-size: 0.875rem;
}

.toc-nav ul {
    list-style: none;
    margin: 0;
    padding-left: var(--spacing-md);
}

.toc-nav > ul {
    padding-left: 0;
}

.toc-nav li {
    margin-bottom: var(--spacing-xs);
}

.toc-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    line-height: 1.4;
}

.toc-nav a:hover,
.toc-nav a.active {
    color: var(--primary-blue);
    background: var(--gray-100);
}

/* 分享按钮 */
.share-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
    background: white;
    cursor: pointer;
}

.share-btn:hover {
    background: var(--gray-100);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.share-btn i {
    font-size: 1rem;
}

.share-btn.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.share-btn.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.share-btn.facebook:hover {
    background: #1877f2;
    color: white;
    border-color: #1877f2;
}

.share-btn.copy:hover {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}


/* 相关文章 */
.related-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* 侧边栏中的相关文章项 */
.sidebar-card .recent-post-item {
    display: flex;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

.sidebar-card .recent-post-item:hover {
    color: var(--primary-blue);
}

.sidebar-card .recent-post-thumb {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

.sidebar-card .recent-post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar-card .recent-post-content {
    flex: 1;
    min-width: 0;
}

.sidebar-card .recent-post-title {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar-card .recent-post-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}


/* 响应式设计 */
@media (max-width: 768px) {
    .breadcrumb-nav {
        padding: calc(var(--spacing-sm) + 12px) 0 var(--spacing-xs);
    }

    .breadcrumb-nav .container {
        min-height: 40px;
    }
    
    .post-layout {
        padding: var(--spacing-lg) 0;
    }
    
    .post-header {
        padding: var(--spacing-lg);
    }
    
    .post-body {
        padding: var(--spacing-lg);
    }
    
    .post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
}

@media (max-width: 480px) {
    .post-header {
        padding: var(--spacing-md);
    }
    
    .post-body {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
}

/* 动画效果 */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 滚动位置指示器 */
.post-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    z-index: 1001;
    transition: width 0.2s ease;
}

/* === 简洁的底部导航 === */
.post-bottom-nav {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.back-to-blog {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.back-to-blog:hover {
    color: var(--primary-purple);
}

.back-to-blog i {
    font-size: 0.8rem;
}

/* === 上一篇/下一篇导航 === */
.post-prev-next {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--border-light);
}

.prev-next-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-width: 600px;
}

.nav-post {
    display: block;
    padding: var(--spacing-xs) 0;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
    line-height: 1.3;
}

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

.nav-post .nav-label {
    display: block;
    font-size: 0.75rem;
    color: #94a3b8;
    font-weight: 400;
    margin-bottom: 2px;
}

.nav-post .nav-title {
    display: block;
    font-weight: 500;
    color: inherit;
}

/* === 分类链接样式 === */
.category-link {
    color: var(--primary-blue) !important;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.category-link:hover {
    color: var(--primary-purple) !important;
    text-decoration: underline;
}

/* === 优化页面布局间距 === */
.post-layout,
.blog-layout {
    margin-bottom: 0;
}

main.post-layout,
main.blog-layout {
    margin-bottom: 0;
}