/* ===== 分类页面样式 ===== */

.page-header {
    background: var(--bg-white);
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 16px;
}

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

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

.breadcrumb .separator {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text);
}

.page-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.page-icon {
    font-size: 36px;
}

.page-desc {
    font-size: 16px;
    color: var(--text-light);
}

/* 文章列表 - 双列布局 */
.article-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 40px 0;
}

.article-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--primary-light);
}

.article-card-header {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
}

.article-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.article-tag {
    display: inline-block;
    font-size: 12px;
    padding: 4px 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-full);
    font-weight: 500;
    margin-bottom: 8px;
}

.article-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-title a {
    color: var(--text);
    transition: color var(--transition);
}

.article-title a:hover {
    color: var(--primary);
}

.article-excerpt {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 12px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.article-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: auto;
}

/* 分类头部 */
.category-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 20px;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.category-icon {
    font-size: 28px;
}

.category-desc {
    font-size: 14px;
    color: var(--text-light);
    margin: 8px 0 0;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
    flex-shrink: 0;
}

.view-all-link:hover {
    background: var(--primary-dark);
    transform: translateX(4px);
}

.view-all-link svg {
    transition: transform var(--transition);
}

.view-all-link:hover svg {
    transform: translateX(4px);
}

/* 首页分类区块 */
.category-section {
    margin-bottom: 48px;
}

/* 加载状态 */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    margin-bottom: 20px;
}

.load-more-btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
}

.load-more-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* 响应式设计 - 平板端 */
@media (max-width: 768px) {
    .page-header {
        padding: 30px 0;
    }
    
    .page-title {
        font-size: 24px;
    }
    
    .page-icon {
        font-size: 28px;
    }
    
    .category-header {
        flex-direction: column;
        gap: 12px;
    }
    
    .category-title {
        font-size: 20px;
    }
    
    .article-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding: 30px 0;
    }
    
    .article-card {
        padding: 16px;
    }
    
    .article-card-header {
        gap: 12px;
    }
    
    .article-icon {
        font-size: 24px;
    }
    
    .article-title {
        font-size: 14px;
    }
    
    .article-excerpt {
        font-size: 13px;
    }
    
    .view-all-link {
        width: 100%;
        justify-content: center;
    }
}

/* 响应式设计 - 手机端 */
@media (max-width: 480px) {
    .page-header {
        padding: 20px 0;
    }
    
    .page-title {
        font-size: 20px;
    }
    
    .page-icon {
        font-size: 24px;
    }
    
    .page-desc {
        font-size: 14px;
    }
    
    .article-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 20px 0;
    }
    
    .article-card {
        padding: 12px;
        border-radius: var(--radius);
    }
    
    .article-card-header {
        gap: 8px;
    }
    
    .article-icon {
        font-size: 20px;
    }
    
    .article-tag {
        font-size: 10px;
        padding: 2px 6px;
    }
    
    .article-title {
        font-size: 13px;
    }
    
    .article-excerpt {
        font-size: 12px;
        margin: 8px 0;
    }
    
    .article-meta {
        font-size: 11px;
        gap: 12px;
    }
}

/* ===== 底部简洁样式 ===== */

.footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    padding: 30px 0;
    margin-top: 60px;
}

.footer-bottom {
    text-align: center;
}

.footer-bottom .copyright {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.footer-bottom .icp {
    font-size: 13px;
    color: var(--text-muted);
}

.footer-bottom .icp a {
    color: var(--text-muted);
    transition: color var(--transition);
}

.footer-bottom .icp a:hover {
    color: var(--primary);
}

/* 底部响应式 */
@media (max-width: 768px) {
    .footer {
        padding: 24px 0;
        margin-top: 40px;
    }
    
    .footer-bottom .copyright {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 20px 0;
        margin-top: 30px;
    }
    
    .footer-bottom .copyright {
        font-size: 12px;
    }
    
    .footer-bottom .icp {
        font-size: 12px;
    }
}