/* articles.css - 文章页面公共样式 */

/* 文章页面专用CSS变量 */
:root {
    --article-bg: #080808;
    --article-card-bg: rgba(30, 30, 30, 0.6);
    --article-border: rgba(255, 255, 255, 0.1);
    --article-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    --article-text-primary: #f9f9f9;
    --article-text-secondary: rgba(249, 249, 249, 0.7);
    --article-text-tertiary: rgba(249, 249, 249, 0.8);
    --article-accent-purple: #a55cff;
    --article-accent-yellow: #ffce52;
    --article-accent-cyan: #00f5ff;
    --article-transition: all 0.3s ease;
}

/* 文章列表页面样式 */
.articles-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    min-height: calc(100vh - 200px);
}

.articles-header {
    text-align: center;
    margin-bottom: 50px;
}

.articles-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--article-text-primary), var(--article-accent-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.articles-subtitle {
    font-size: 16px;
    color: var(--article-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.article-card {
    background: var(--article-card-bg);
    border: 1px solid var(--article-border);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: var(--article-transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--article-shadow);
    border-color: var(--article-accent-purple);
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(165, 92, 255, 0.1), transparent);
    transition: left 0.6s;
}

.article-card:hover::before {
    left: 100%;
}

.article-category {
    display: inline-block;
    background: linear-gradient(135deg, var(--article-accent-purple), #8a2be2);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 15px;
}

.article-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--article-text-primary);
    line-height: 1.4;
}

.article-excerpt {
    font-size: 14px;
    color: var(--article-text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--article-text-tertiary);
}

.article-date {
    display: flex;
    align-items: center;
    gap: 5px;
}

.article-tags {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.article-tag {
    background: rgba(165, 92, 255, 0.2);
    color: var(--article-accent-purple);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
}

/* 文章详情页面样式 */
.article-detail-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 20px;
    min-height: calc(100vh - 200px);
}

.article-breadcrumb {
    margin-bottom: 30px;
    font-size: 14px;
    color: var(--article-text-secondary);
}

.article-breadcrumb a {
    color: var(--article-accent-purple);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    text-decoration: underline;
}

.article-featured-image {
    width: 100%;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 30px;
    position: relative;
}

.article-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--article-transition);
}

.article-featured-image:hover img {
    transform: scale(1.05);
}

.article-detail-header {
    text-align: center;
    margin-bottom: 40px;
}

.article-detail-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--article-text-primary);
    line-height: 1.3;
}

.article-detail-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    font-size: 14px;
    color: var(--article-text-secondary);
    margin-bottom: 30px;
}

.article-detail-meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--article-text-primary);
}

.article-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 30px 0 15px;
    color: var(--article-accent-yellow);
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 25px 0 12px;
    color: var(--article-accent-cyan);
}

.article-content p {
    margin-bottom: 15px;
}

.article-content blockquote {
    border-left: 4px solid var(--article-accent-purple);
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    color: var(--article-text-secondary);
}

.article-tags-section {
    margin: 40px 0;
    padding: 20px;
    background: var(--article-card-bg);
    border-radius: 15px;
}

.article-tags-section h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--article-text-primary);
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 50px 0;
    padding: 20px 0;
    border-top: 1px solid var(--article-border);
    border-bottom: 1px solid var(--article-border);
}

.nav-button {
    background: var(--article-card-bg);
    border: 1px solid var(--article-border);
    padding: 10px 20px;
    border-radius: 10px;
    color: var(--article-text-primary);
    text-decoration: none;
    transition: var(--article-transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-button:hover {
    background: var(--article-accent-purple);
    border-color: var(--article-accent-purple);
    transform: translateX(-5px);
}

.nav-button.next:hover {
    transform: translateX(5px);
}

.related-articles {
    margin-top: 60px;
}

.related-articles h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--article-text-primary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.related-article {
    background: var(--article-card-bg);
    border: 1px solid var(--article-border);
    border-radius: 15px;
    padding: 20px;
    transition: var(--article-transition);
}

.related-article:hover {
    transform: translateY(-3px);
    border-color: var(--article-accent-purple);
}

.related-article h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--article-text-primary);
}

.related-article p {
    font-size: 14px;
    color: var(--article-text-secondary);
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .article-detail-title {
        font-size: 24px;
    }
    
    .article-featured-image {
        height: 250px;
    }
    
    .article-detail-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .article-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-button {
        width: 100%;
        justify-content: center;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card {
    animation: fadeInUp 0.6s ease-out;
}

.article-card:nth-child(2) { animation-delay: 0.1s; }
.article-card:nth-child(3) { animation-delay: 0.2s; }
.article-card:nth-child(4) { animation-delay: 0.3s; }
.article-card:nth-child(5) { animation-delay: 0.4s; }
.article-card:nth-child(6) { animation-delay: 0.5s; }