/* 文章页面专用样式 */

/* 面包屑导航 */
.breadcrumb {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 文章容器 */
.article-container {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}

/* 文章主体 */
.article-main {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    border: 1px solid var(--border-light);
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.article-category {
    display: inline-block;
    background: var(--primary-blue);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.article-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.article-content {
    font-size: 1.05rem;
    line-height: 1.7;
}

.article-content h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--primary-blue);
}

.article-content h3 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: 1.2rem;
}

.article-content ul, .article-content ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content blockquote {
    background: #f1f5f9;
    border-left: 4px solid var(--primary-blue);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.article-content code {
    background: #f1f5f9;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.article-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 1.5rem 0;
    font-family: 'Courier New', monospace;
    line-height: 1.5;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.article-content th, .article-content td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.article-content th {
    background: #f8fafc;
    font-weight: 600;
}

.article-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

.article-actions {
    display: flex;
    gap: 1rem;
}

.action-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    padding: 0.6rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.action-button:hover {
    background: #f8fafc;
    border-color: var(--primary-blue-light);
}

.article-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.diagram {
    border: 1px solid #e1e4e8;
    padding: 10px;
    background: white;
}

img[alt*="图"] {
    display: block;
    margin: 20px auto;
}

/* 文章图片样式 */
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
    display: block;
}

/* 图片标题样式 */
.article-content img + em {
    display: block;
    text-align: center;
    font-size: 0.9em;
    color: #666;
    margin-top: -10px;
    margin-bottom: 20px;
    font-style: normal;
}

/* 大图样式 */
.article-content img.large {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
}

/* 小图样式 */
.article-content img.small {
    width: 50%;
    margin-left: auto;
    margin-right: auto;
}

/* 侧边目录导航 */
.toc-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    border: 1px solid var(--border-light);
}

.toc-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
}

.toc-list {
    list-style: none;
}

.toc-list li {
    margin-bottom: 0.5rem;
}

.toc-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
    display: block;
    padding: 0.25rem 0;
}

.toc-list a:hover {
    color: var(--primary-blue);
}

.toc-list .level-2 {
    padding-left: 1rem;
}

.toc-list .level-3 {
    padding-left: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .article-container {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 1.75rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}