/* 现代化简约风格样式 */

:root {
    /* 色彩变量 */
    --primary-bg-color: #f5f5f7;
    --secondary-bg-color: #ffffff;
    --text-primary-color: #1d1d1f;
    --text-secondary-color: #86868b;
    --accent-color: #0071e3;
    --border-color: #d2d2d7;
    --shadow-color: rgba(0, 0, 0, 0.05);
    
    /* 尺寸变量 */
    --border-radius: 12px;
    --content-max-width: 768px;
    --card-spacing: 24px;
}

/* 深色模式变量 */
[data-theme="dark"] {
    --primary-bg-color: #121212;
    --secondary-bg-color: #1c1c1e;
    --text-primary-color: #ffffff;
    --text-secondary-color: #86868b;
    --accent-color: #2997ff;
    --border-color: #38383a;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

/* 主容器样式 */
.modern-content-section {
    background-color: var(--primary-bg-color);
    padding: 64px 0;
    min-height: 60vh;
}

.content-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部装饰区域 */
.hero-section {
    height: 8px;
    background: linear-gradient(90deg, #0071e3, #5ac8fa, #34c759, #ffcc00, #ff9500, #ff2d55);
    border-radius: var(--border-radius);
    margin-bottom: 40px;
}

/* 特色文章区域 */
.articles-area {
    position: relative;
}

.featured-article {
    background-color: var(--secondary-bg-color);
    border-radius: var(--border-radius);
    padding: 48px;
    margin-bottom: 40px;
    box-shadow: 0 2px 20px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.featured-article:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px var(--shadow-color);
}

.article-meta-info {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.article-date, .article-category {
    font-size: 14px;
    color: var(--text-secondary-color);
    letter-spacing: 0.03em;
}

.article-category {
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--accent-color);
    padding: 4px 12px;
    border-radius: 1000px;
    font-weight: 500;
}

[data-theme="dark"] .article-category {
    background-color: rgba(41, 151, 255, 0.2);
}

.article-main-title {
    font-size: 36px;
    line-height: 1.2;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-primary-color);
    letter-spacing: -0.02em;
}

.article-summary {
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-secondary-color);
    margin-bottom: 32px;
}

.article-actions {
    display: flex;
    gap: 16px;
}

/* 按钮样式 */
.primary-button, .secondary-button {
    padding: 12px 24px;
    border-radius: 1000px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    text-align: center;
    text-decoration: none;
}

.primary-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
}

.primary-button:hover {
    background-color: #0077ed;
    transform: scale(1.03);
}

[data-theme="dark"] .primary-button:hover {
    background-color: #38adff;
}

.secondary-button {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--border-color);
}

.secondary-button:hover {
    background-color: rgba(0, 113, 227, 0.05);
}

[data-theme="dark"] .secondary-button:hover {
    background-color: rgba(41, 151, 255, 0.1);
}

/* 文章网格布局 */
.articles-grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--card-spacing);
    margin-bottom: 40px;
}

/* 文章卡片样式 */
.content-card {
    background-color: var(--secondary-bg-color);
    border-radius: var(--border-radius);
    padding: 32px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.content-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-color);
    border-color: var(--accent-color);
}

.card-date {
    font-size: 13px;
    color: var(--text-secondary-color);
    display: block;
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.card-title {
    font-size: 22px;
    line-height: 1.3;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-primary-color);
    letter-spacing: -0.01em;
}

.card-description {
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-secondary-color);
    margin-bottom: 20px;
}

.card-link {
    color: var(--accent-color);
    font-weight: 500;
    text-decoration: none;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.card-link:hover {
    text-decoration: underline;
}

.card-link::after {
    content: "→";
    font-size: 14px;
    transition: transform 0.2s ease;
}

.card-link:hover::after {
    transform: translateX(3px);
}

/* 加载更多按钮 */
.load-more-section {
    text-align: center;
}

.load-more-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--accent-color);
    padding: 12px 40px;
    border-radius: 1000px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.load-more-btn:hover {
    background-color: rgba(0, 113, 227, 0.05);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

[data-theme="dark"] .load-more-btn:hover {
    background-color: rgba(41, 151, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modern-content-section {
        padding: 40px 0;
    }
    
    .featured-article {
        padding: 32px 24px;
        margin-bottom: 32px;
    }
    
    .article-main-title {
        font-size: 28px;
    }
    
    .article-summary {
        font-size: 16px;
    }
    
    .article-actions {
        flex-direction: column;
    }
    
    .content-card {
        padding: 24px;
    }
    
    .card-title {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .content-container {
        padding: 0 16px;
    }
    
    .featured-article {
        padding: 24px 20px;
    }
    
    .article-main-title {
        font-size: 24px;
    }
    
    .content-card {
        padding: 20px;
    }
}

/* 平滑滚动效果 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.featured-article,
.content-card {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.featured-article {
    animation-delay: 0.2s;
}

.content-card:nth-child(1) {
    animation-delay: 0.4s;
}

.content-card:nth-child(2) {
    animation-delay: 0.6s;
}

.content-card:nth-child(3) {
    animation-delay: 0.8s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}