/* 文章页面专用样式 - 继承主站风格 */
/* 注意：header/footer/nav 样式由主站 index.css 提供 */

/* 文章主体区布局 */
.article-main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}

/* 文章内容卡片 */
.article-content {
    background: var(--card-bg, #ffffff);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 文章标题和元信息 */
.article-meta h1 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    line-height: 1.3;
    color: var(--text-color, #1f2937);
}

.meta-info {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary, #6b7280);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.meta-info .category {
    background: var(--color-primary, #2563eb);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* 文章摘要 */
.article-excerpt {
    background: var(--bg-color, #f9fafb);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
    font-size: 1.05rem;
    color: var(--text-secondary, #6b7280);
}

/* 文章正文 */
.article-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color, #1f2937);
}

.article-body h2 {
    font-size: 1.35rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary, #2563eb);
}

.article-body h3 {
    font-size: 1.15rem;
    margin: 1.5rem 0 0.75rem;
}

.article-body p {
    margin-bottom: 1rem;
}

/* 特色图/封面图 */
.article-featured-image {
    margin: 1.5rem 0 2rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

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

/* 文章内配图 */
.article-figure {
    margin: 1.5rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.article-figure img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.article-figure:hover img {
    transform: scale(1.02);
}

.article-figure figcaption {
    padding: 0.75rem 1rem;
    background: var(--bg-color, #f9fafb);
    font-size: 0.875rem;
    color: var(--text-secondary, #6b7280);
    text-align: center;
}

/* 文章底部 */
.article-footer {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color, #e5e7eb);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.article-tags .tag {
    background: var(--bg-color, #f9fafb);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--text-secondary, #6b7280);
}

.article-cta {
    text-align: center;
}

.cta-button {
    display: inline-block;
    background: var(--color-primary, #2563eb);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.cta-button:hover {
    opacity: 0.9;
}

/* 侧边栏 */
.article-sidebar {
    position: sticky;
    top: 5rem;
    height: fit-content;
}

.sidebar-section {
    background: var(--card-bg, #ffffff);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.sidebar-section h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.related-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-links li {
    margin-bottom: 0.75rem;
}

.related-links a {
    color: var(--text-color, #1f2937);
    text-decoration: none;
    font-size: 0.875rem;
}

.related-links a:hover {
    color: var(--color-primary, #2563eb);
}

.sidebar-download-btn {
    display: block;
    background: var(--color-primary, #2563eb);
    color: white;
    text-align: center;
    padding: 0.75rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
}

.sidebar-download-btn:hover {
    opacity: 0.9;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .article-main {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .article-sidebar {
        position: static;
    }

    .article-content {
        padding: 1.5rem;
    }

    .article-meta h1 {
        font-size: 1.35rem;
    }
}