/* 博客页面专用样式 - 学术科技主题 */
@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:wght@400;600;700&family=JetBrains+Mono:wght@400;500;600&family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* CSS变量继承主题 */
:root {
    --primary-dark: #0a1929;
    --primary-blue: #1e3a5f;
    --primary-cyan: #2d5f7f;
    --accent-amber: #f4a261;
    --accent-teal: #2a9d8f;
    --bg-primary: #0d1b2a;
    --bg-secondary: #1b263b;
    --bg-tertiary: #415a77;
    --text-primary: #e0e1dd;
    --text-secondary: #b8bfc7;
    --text-muted: #778da9;
    --highlight: #f4a261;
    --highlight-glow: rgba(244, 162, 97, 0.3);
    --grid-color: rgba(42, 157, 143, 0.1);
    --font-serif: 'Crimson Pro', 'Noto Serif SC', serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'Noto Sans SC', -apple-system, sans-serif;
    --spacing-unit: 8px;
    --border-radius: 4px;
    --transition-speed: 0.3s;
}

/* 博客列表页面专用样式 */
.blog-list {
    padding-top: 120px;
    min-height: 100vh;
    background: var(--bg-primary);
    position: relative;
}

/* 数据流动背景 */
.blog-list::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

.blog-header {
    text-align: center;
    margin-bottom: 5rem;
    padding: 3rem 0;
    position: relative;
}

.page-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    position: relative;
    display: inline-block;
}

.page-title::before {
    content: '{ ';
    color: var(--accent-teal);
    font-family: var(--font-mono);
}

.page-title::after {
    content: ' }';
    color: var(--accent-amber);
    font-family: var(--font-mono);
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
    font-family: var(--font-sans);
}

/* 分类筛选按钮样式 */
.blog-categories {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    background: rgba(27, 38, 59, 0.6);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 1px solid rgba(42, 157, 143, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(42, 157, 143, 0.2), transparent);
    transition: left 0.5s ease;
}

.category-btn:hover::before {
    left: 100%;
}

.category-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 157, 143, 0.4);
    color: var(--accent-teal);
    border-color: var(--accent-teal);
}

.category-btn.active {
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-amber));
    color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 157, 143, 0.5);
    border-color: transparent;
}

.category-btn i {
    font-size: 1.2rem;
}

/* 博客文章列表样式 */
.blog-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.blog-post-item {
    background: rgba(27, 38, 59, 0.6);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    border: 1px solid rgba(42, 157, 143, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.blog-post-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-teal), var(--accent-amber));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-speed) ease;
}

.blog-post-item:hover::before {
    transform: scaleX(1);
}

.blog-post-item:hover {
    transform: translateY(-10px);
    border-color: var(--accent-teal);
    box-shadow: 0 16px 48px rgba(42, 157, 143, 0.4);
}

.post-date {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-amber));
    color: var(--primary-dark);
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.blog-post-item h2 {
    margin-bottom: 1.2rem;
    font-size: 1.6rem;
    line-height: 1.4;
    font-family: var(--font-serif);
    font-weight: 700;
}

.blog-post-item h2 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

.blog-post-item h2 a:hover {
    color: var(--accent-amber);
    text-shadow: 0 0 10px var(--highlight-glow);
}

.post-excerpt {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.8rem;
    font-size: 1rem;
}

.post-tags {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.tag {
    background: rgba(42, 157, 143, 0.15);
    color: var(--accent-teal);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    font-weight: 500;
    border: 1px solid rgba(42, 157, 143, 0.3);
    transition: all var(--transition-speed) ease;
}

.tag:hover {
    background: var(--accent-teal);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 157, 143, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .blog-list {
        padding-top: 100px;
    }
    
    .page-title {
        font-size: 2.8rem;
    }
    
    .blog-categories {
        gap: 1rem;
    }
    
    .category-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .blog-posts {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .blog-post-item {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 2.2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .category-btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.85rem;
    }
    
    .category-btn span {
        display: none;
    }
    
    .category-btn i {
        margin: 0;
    }
    
    .blog-post-item h2 {
        font-size: 1.3rem;
    }
}