/* 文章列表页面样式 */
.articles-page {
    max-width: 1200px;
    margin: 160px auto 0;
    padding: 0 20px;
    box-sizing: border-box;
}

/* 文章列表头部 */
.articles-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.articles-header h1 {
    font-size: 2.5em;
    color: var(--text-color);
    margin: 0;
}

/* 视图选项 */
.view-options {
    display: flex;
    gap: 10px;
}

.view-option {
    padding: 8px 16px;
    border: none;
    background: var(--secondary-color);
    color: var(--text-secondary);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-option:hover {
    background: var(--primary-color);
}

.view-option.active {
    background: var(--accent-color);
    color: white;
}

/* 分类导航 */
.category-nav {
    margin-bottom: 30px;
    position: relative;
}

.category-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--secondary-color);
    border: none;
    border-radius: 20px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-toggle:hover {
    background: var(--primary-color);
}

.category-toggle.active {
    background: var(--accent-color);
    color: white;
}

.category-list {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 10px;
    background: var(--secondary-color);
    border-radius: 12px;
    padding: 10px;
    display: none;
    flex-direction: column;
    gap: 5px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.category-list.active {
    display: flex;
}

.category-link {
    padding: 8px 16px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-link:hover {
    background: var(--primary-color);
    color: var(--accent-color);
}

/* 文章容器 */
.articles-container {
    position: relative;
}

/* 文章视图 */
.articles-view {
    display: none;
}

.articles-view.active {
    display: block;
}

/* 时间线视图 */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-year {
    margin-bottom: 40px;
}

.timeline-year h2 {
    font-size: 1.8em;
    color: var(--text-color);
    margin: 0 0 20px;
    position: relative;
}

.timeline-year h2::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 50%;
    width: 12px;
    height: 12px;
    background: var(--accent-color);
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-month {
    margin-bottom: 30px;
}

.timeline-month h3 {
    font-size: 1.4em;
    color: var(--text-secondary);
    margin: 0 0 20px;
    position: relative;
}

.timeline-month h3::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 50%;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateY(-50%);
}

/* 分类视图 */
.categories-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.category-section {
    background: var(--secondary-color);
    border-radius: 12px;
    padding: 20px;
}

.category-section h2 {
    font-size: 1.6em;
    color: var(--text-color);
    margin: 0 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.category-articles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* 网格视图 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

/* 文章卡片 */
.article-card {
    background: var(--secondary-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.article-date {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.article-title {
    font-size: 1.4em;
    margin: 0 0 15px;
}

.article-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

.article-category a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-category a:hover {
    color: var(--accent-color);
}

.article-excerpt {
    color: var(--text-secondary);
    margin: 0 0 15px;
    line-height: 1.6;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-color);
    color: var(--text-secondary);
    border-radius: 15px;
    font-size: 0.9em;
    text-decoration: none;
    transition: all 0.3s ease;
}

.article-tag:hover {
    background: var(--accent-color);
    color: white;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .articles-page {
        margin-top: 140px;
    }
    
    .articles-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .view-options {
        width: 100%;
        justify-content: center;
    }
    
    .category-articles {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .articles-page {
        margin-top: 120px;
        padding: 0 15px;
    }
    
    .articles-header h1 {
        font-size: 2em;
    }
    
    .view-option {
        padding: 6px 12px;
        font-size: 0.9em;
    }
    
    .timeline {
        padding-left: 20px;
    }
    
    .timeline-year h2::before,
    .timeline-month h3::before {
        left: -24px;
    }
    
    .category-section {
        padding: 15px;
    }
    
    .article-card {
        padding: 15px;
    }
}