/* 文章页面样式 */
.articles-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 40px;
}

/* 筛选器 */
.filter-bar {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.search-box {
    position: relative;
    margin-bottom: 20px;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.search-box input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.filter-buttons {
    display: flex;
    gap: 10px;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid #e2e8f0;
    background: var(--white);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: #1e3a8a;
    color: var(--white);
    border-color: #1e3a8a;
}

.filter-options {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #e2e8f0;
}

.category-cloud,
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.category-item,
.tag-item {
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(30, 64, 175, 0.1));
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.category-item:hover,
.tag-item:hover {
    background: #1e3a8a;
    color: var(--white);
    transform: translateY(-2px);
}

/* 文章卡片 */
.article-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.article-card.featured {
    border-left: 5px solid var(--accent-color);
}

.article-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: var(--white);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.article-content {
    padding: 30px;
}

.article-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    color: var(--text-light);
    font-size: 0.9rem;
}

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

.article-category {
    color: #1e3a8a;
    font-weight: 600;
}

.article-title {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
}

.article-excerpt {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 2px solid #e2e8f0;
}

.article-tags {
    display: flex;
    gap: 10px;
}

.tag {
    background: var(--bg-light);
    color: var(--text-light);
    padding: 6px 14px;
    border-radius: 15px;
    font-size: 0.85rem;
}

.article-actions {
    display: flex;
    gap: 15px;
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-light);
    font-size: 0.9rem;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
}

.action-btn:hover {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(30, 64, 175, 0.1));
    color: #1e3a8a;
}

.action-btn.liked,
.action-btn.collected {
    color: #3b82f6;
}

.load-more {
    text-align: center;
    padding: 40px 0;
}

.load-more-btn {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    color: var(--white);
    padding: 15px 50px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(30, 58, 138, 0.4);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(30, 58, 138, 0.5);
}

/* 侧边栏 */
.articles-sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-widget {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.widget-title {
    font-size: 1.3rem;
    color: #1e3a8a;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.archive-list li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
    cursor: pointer;
    transition: var(--transition);
}

.archive-list li:last-child {
    border-bottom: none;
}

.archive-list li:hover {
    color: #1e3a8a;
}

.archive-list .count {
    background: var(--bg-light);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

.popular-posts {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.popular-post {
    display: flex;
    gap: 15px;
    align-items: center;
    padding: 12px;
    background: var(--bg-light);
    border-radius: 10px;
    transition: var(--transition);
}

.popular-post:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.post-number {
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.post-info h4 {
    font-size: 0.95rem;
    color: var(--text-dark);
    margin-bottom: 5px;
    line-height: 1.4;
}

.views {
    font-size: 0.85rem;
    color: var(--text-light);
}

.widget-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.widget-tag {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(30, 64, 175, 0.1));
    color: #1e3a8a;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.widget-tag:hover {
    background: #1e3a8a;
    color: var(--white);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .articles-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .article-title {
        font-size: 1.4rem;
    }

    .article-footer {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}