/**
 * QuantaPay 现代博客主题
 * 设计理念：现代、简洁、专业、具有科技感
 */

:root {
  /* 主题色彩 */
  --primary-blue: #0ea5e9;
  --primary-purple: #8b5cf6;
  --primary-cyan: #06b6d4;
  --accent-pink: #ec4899;
  
  /* 中性色彩 */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* 语义色彩 */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* 动画 */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* === 全局样式 === */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* === 工具类 === */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  color: var(--text-muted);
  font-size: 1.125rem;
}

/* === 头部样式已移至 site-header.js 组件化管理 === */
/* 博客页面专属的body样式调整 */
body {
  /* padding-top 由 site-header.js 自动管理 */
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === 精致品牌化的Blog Hero设计 === */
.blog-hero {
  background: linear-gradient(135deg, #1a0b2e 0%, #16213e 25%, #0f3460 50%, #16213e 75%, #1a0b2e 100%);
  padding: clamp(4.25rem, 14vh, 7rem) 0 clamp(3.5rem, 9vh, 5.75rem);
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
  min-height: clamp(320px, 52vh, 480px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.blog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 120% 80% at 20% 30%, rgba(168,85,247,.12) 0%, transparent 60%),
    radial-gradient(ellipse 100% 70% at 80% 70%, rgba(6,182,212,.1) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(168,85,247,.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: techGlow 8s ease-in-out infinite alternate;
}

.blog-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 20%, rgba(168,85,247,.04) 30%, rgba(6,182,212,.03) 50%, rgba(168,85,247,.04) 70%, transparent 80%);
  pointer-events: none;
  z-index: 1;
  animation: techShift 12s ease-in-out infinite alternate-reverse;
}

@keyframes techGlow {
  0% { opacity: 1; }
  100% { opacity: 0.7; }
}

@keyframes techShift {
  0% { opacity: 1; }
  100% { opacity: 0.5; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 3.5rem);
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 1.5rem 0;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-align: center;
  position: relative;
}

.hero-title::after {
  content: '';
  position: absolute;
  bottom: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #39e9c7, #53a9ff);
  border-radius: 1px;
  opacity: 0.6;
}

.hero-subtitle {
  font-size: clamp(0.875rem, 1.8vw, 1rem);
  font-weight: 400;
  line-height: 1.6;
  margin: 0;
  color: #cbd5e1;
  opacity: 0.85;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  letter-spacing: -0.005em;
}


/* === 主要布局 === */
.blog-content {
  padding: var(--spacing-lg) 0;
}

.content-wrapper {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

@media (max-width: 1024px) {
  .content-wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .blog-sidebar {
    order: 2;
  }
}

/* === 侧边栏 === */
.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.sidebar-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
}

.sidebar-card:hover {
  box-shadow: var(--shadow-md);
}

.sidebar-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--text-primary);
}

.sidebar-title i {
  color: var(--primary-blue);
  font-size: 1rem;
}

/* 分类列表 */
.category-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  color: var(--text-secondary);
}

.category-item:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.category-item.active {
  background: var(--primary-blue);
  color: white;
}

.category-count {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* 最新文章 */
.recent-posts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.recent-post-item {
  display: flex;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

.recent-post-item:hover {
  color: var(--primary-blue);
}

.recent-post-thumb {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--gray-200);
  flex-shrink: 0;
  overflow: hidden;
}

.recent-post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recent-post-content {
  flex: 1;
  min-width: 0;
}

.recent-post-title {
  font-size: 0.875rem;
  font-weight: 500;
  margin: 0 0 var(--spacing-xs) 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.recent-post-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag-item {
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--gray-100);
  color: var(--text-secondary);
  border-radius: var(--radius-2xl);
  text-decoration: none;
  transition: var(--transition-fast);
  cursor: pointer;
}

.tag-item:hover {
  background: var(--primary-blue);
  color: white;
}

/* 标签计数样式 */
.tag-count {
  font-size: 0.75rem;
  background: var(--gray-200);
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-xl);
  margin-left: 0.5rem;
}

.tag-item:hover .tag-count {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* 文章页面标签样式 */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: 0.25rem;
}

.post-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: var(--tag-color, var(--gray-100));
  color: white;
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: var(--transition-fast);
  opacity: 0.9;
}

.post-tag:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* === 主要内容区域 === */
.blog-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

/* 区域标题 */
.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 var(--spacing-xl) 0;
  color: var(--text-primary);
}

.section-title i {
  color: var(--primary-blue);
  font-size: 1.25rem;
}

/* 特色文章 */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.featured-post {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  text-decoration: none;
  color: inherit;
  display: block;
}

.featured-post:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.featured-post-image {
  aspect-ratio: 16/9;
  background: var(--gray-200);
  overflow: hidden;
  position: relative;
}

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

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

.featured-post-content {
  padding: var(--spacing-xl);
}

.featured-post-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.featured-post-category {
  background: var(--primary-blue);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-2xl);
  font-size: 0.75rem;
  font-weight: 500;
}

.featured-post-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.4;
  color: var(--text-primary);
}

.featured-post-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 文章列表 */
.posts-section {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.view-toggle {
  display: flex;
  gap: var(--spacing-xs);
}

.toggle-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-medium);
  background: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-muted);
}

.toggle-btn:hover,
.toggle-btn.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: white;
}

/* 文章网格 */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.posts-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.post-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
  text-decoration: none;
  color: inherit;
  display: block;
}

.post-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.post-card-image {
  aspect-ratio: 16/9;
  background: var(--gray-200);
  overflow: hidden;
  position: relative;
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.post-card:hover .post-card-image img {
  transform: scale(1.02);
}

.post-card-content {
  padding: var(--spacing-lg);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.post-card-category {
  background: var(--gray-100);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-2xl);
  font-size: 0.75rem;
  font-weight: 500;
}

.post-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.4;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 列表视图样式 */
.posts-list .post-card {
  display: flex;
  align-items: center;
  padding: var(--spacing-lg);
}

.posts-list .post-card-image {
  width: 200px;
  height: 120px;
  aspect-ratio: auto;
  flex-shrink: 0;
  margin-right: var(--spacing-lg);
}

.posts-list .post-card-content {
  flex: 1;
  padding: 0;
}

/* 骨架屏 */
.post-skeleton {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-img {
  aspect-ratio: 16/9;
  background: var(--gray-200);
}

.skeleton-content {
  padding: var(--spacing-lg);
}

.skeleton-title {
  height: 1.5rem;
  background: var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
}

.skeleton-text {
  height: 1rem;
  background: var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
}

.skeleton-text.short {
  width: 60%;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* === 分页 === */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-light);
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.pagination-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-medium);
  background: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
}

.pagination-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.pagination-btn.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: white;
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* === 页脚样式已移至 site-footer.js 组件化管理 === */

/* === 响应式设计 === */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .blog-hero {
    padding: calc(3.75rem + 32px) 0 clamp(3rem, 8vh, 4rem);
    min-height: 370px;
  }
  
  .hero-content {
    padding: 0 var(--spacing-lg);
  }
  
  .hero-title {
    margin-bottom: var(--spacing-lg);
  }
  
  .section-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .featured-grid {
    grid-template-columns: 1fr;
  }
  
  .posts-list .post-card {
    flex-direction: column;
    text-align: left;
  }
  
  .posts-list .post-card-image {
    width: 100%;
    height: 200px;
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }
  
  .posts-list .post-card-content {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .blog-hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .posts-section {
    padding: var(--spacing-lg);
  }
  
  .sidebar-card {
    padding: var(--spacing-lg);
  }
}