/* ============================================ */
/* 文章详情页样式 */
/* ============================================ */

/* ========== 文章详情卡片 ========== */
.article-detail {
    background: var(--color-white);
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: 0 4px 20px rgba(26, 93, 156, 0.08);
    border: 1px solid var(--color-border);
}

/* ========== 文章标题 ========== */
.article-detail-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.4;
    margin-bottom: 20px;
}

/* ========== Meta 信息栏 ========== */
.article-detail-meta {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 30px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.article-detail-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-detail-meta-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.article-detail-meta-divider {
    margin: 0 16px;
    color: rgba(26, 93, 156, 0.12);
}

/* ========== 封面大图 ========== */
.article-detail-cover {
    margin-bottom: 30px;
    border-radius: 8px;
    overflow: hidden;
}

.article-detail-cover img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
}

/* ========== 文章正文 ========== */
.article-detail-body {
    font-size: 16px;
    color: var(--color-text-primary);
    line-height: 1.9;
    word-break: break-word;
}

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

.article-detail-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 24px auto;
    display: block;
}

.article-detail-body h2,
.article-detail-body h3,
.article-detail-body h4 {
    margin: 32px 0 16px;
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.4;
}

.article-detail-body h2 { font-size: 22px; }
.article-detail-body h3 { font-size: 18px; }
.article-detail-body h4 { font-size: 16px; }

.article-detail-body blockquote {
    margin: 24px 0;
    padding: 16px 24px;
    border-left: 3px solid var(--color-primary);
    background: rgba(26, 93, 156, 0.04);
    border-radius: 0 8px 8px 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.article-detail-body ul,
.article-detail-body ol {
    margin: 16px 0;
    padding-left: 24px;
}

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

.article-detail-body a {
    color: var(--color-primary);
    text-decoration: underline;
}

.article-detail-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-detail-body th,
.article-detail-body td {
    border: 1px solid var(--color-border);
    padding: 10px 14px;
}

.article-detail-body th {
    background: var(--color-bg-gray);
    font-weight: 600;
    color: var(--color-text-primary);
}

.article-detail-body td {
    color: var(--color-text-secondary);
}

/* ========== 上一篇 / 下一篇 ========== */
.article-detail-nav {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.article-detail-nav-item {
    padding: 16px 20px;
    border-radius: 8px;
    background: var(--color-bg-gray);
    border: 1px solid var(--color-border);
    transition: background 0.2s, border-color 0.2s;
}

.article-detail-nav-item a {
    display: block;
    color: inherit;
}

.article-detail-nav-item:hover {
    background: rgba(26, 93, 156, 0.04);
    border-color: rgba(26, 93, 156, 0.2);
}

.article-detail-nav-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.article-detail-nav-label svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.article-detail-nav-title {
    font-size: 15px;
    color: var(--color-text-primary);
    font-weight: 500;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-detail-nav-title--none {
    color: var(--color-text-light);
    font-weight: 400;
}

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

.article-detail-nav-next .article-detail-nav-label {
    justify-content: flex-end;
}

/* ========== 相关文章 ========== */
.article-detail-related {
    background: var(--color-white);
    border-radius: 12px;
    padding: 30px 40px;
    box-shadow: 0 4px 20px rgba(26, 93, 156, 0.08);
    border: 1px solid var(--color-border);
}

.article-detail-related-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-border);
    position: relative;
}

.article-detail-related-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.article-detail-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 相关文章卡片 */
.related-card {
    display: block;
    border-radius: 8px;
    overflow: hidden;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    transition: box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.related-card:hover {
    box-shadow: 0 8px 24px rgba(26, 93, 156, 0.12);
    transform: translateY(-4px);
}

.related-card-img {
    height: 160px;
    overflow: hidden;
}

.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.related-card-info {
    padding: 16px;
}

.related-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
}

.related-card:hover .related-card-title {
    color: var(--color-primary);
}

.related-card-date {
    font-size: 13px;
    color: var(--color-text-light);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .article-detail-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .article-detail {
        padding: 24px 20px;
    }

    .article-detail-title {
        font-size: 22px;
    }

    .article-detail-meta {
        font-size: 13px;
        padding-bottom: 20px;
        margin-bottom: 24px;
    }

    .article-detail-meta-divider {
        margin: 0 12px;
    }

    .article-detail-body {
        font-size: 15px;
    }

    .article-detail-body img {
        border-radius: 6px;
        margin: 16px auto;
    }

    .article-detail-body h2 { font-size: 20px; }
    .article-detail-body h3 { font-size: 17px; }

    .article-detail-nav {
        grid-template-columns: 1fr;
        gap: 12px;
    }

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

    .article-detail-nav-next .article-detail-nav-label {
        justify-content: flex-start;
    }

    .article-detail-related {
        padding: 24px 20px;
    }

    .article-detail-related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .related-card-img {
        height: 140px;
    }
}

@media (max-width: 480px) {
    .article-detail {
        padding: 20px 16px;
        border-radius: 8px;
    }

    .article-detail-title {
        font-size: 20px;
    }

    .article-detail-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .article-detail-meta-divider {
        display: none;
    }

    .article-detail-body {
        font-size: 15px;
        line-height: 1.8;
    }

    .article-detail-related {
        padding: 20px 16px;
        border-radius: 8px;
    }

    .related-card-img {
        height: 120px;
    }
}