/* ========================================
   咖啡豆 - 咖啡资讯网站样式
   查询关键词: 咖啡豆 www.kafeiju.cn
   ======================================== */

/* CSS 变量定义 */
:root {
  /* 咖啡主题配色 */
  --color-primary: #4a3728;
  --color-primary-dark: #2d1f16;
  --color-primary-light: #6b4e3d;
  --color-secondary: #c9a86c;
  --color-secondary-light: #e8d5b5;
  --color-accent: #8b4513;
  --color-cream: #f5f0e8;
  --color-cream-dark: #e8e0d5;
  --color-white: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #e0d5c5;
  --color-error: #c9302c;
  --color-success: #5cb85c;

  /* 字体 */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;

  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* 布局 */
  --max-width: 1200px;
  --header-height: 70px;
  --border-radius: 8px;
  --border-radius-sm: 4px;

  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-cream);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ========================================
   布局容器
   ======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   头部导航
   ======================================== */
.header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.25rem;
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.5rem 0;
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-normal);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.nav a:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-btn,
.menu-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.search-btn:hover,
.menu-btn:hover {
  background-color: var(--color-cream);
}

.menu-btn {
  display: none;
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-primary-dark);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-light);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: var(--spacing-xxl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
  opacity: 0.5;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 600px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ========================================
   区块标题
   ======================================== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.1rem;
}

.section-header-left {
  text-align: left;
}

/* ========================================
   卡片组件
   ======================================== */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

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

.card-badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background-color: var(--color-secondary);
  color: var(--color-primary-dark);
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

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

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

.card-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

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

.card-excerpt {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   文章列表
   ======================================== */
.article-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.article-item {
  display: flex;
  gap: var(--spacing-md);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.article-item:hover {
  box-shadow: var(--shadow-md);
}

.article-item-image {
  flex: 0 0 280px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

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

.article-item-content {
  flex: 1;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

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

.article-item-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

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

.article-item-excerpt {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   网格布局
   ======================================== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ========================================
   分类标签
   ======================================== */
.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.category-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: var(--color-cream-dark);
  color: var(--color-primary);
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

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

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

/* ========================================
   特色区块
   ======================================== */
.features {
  padding: var(--spacing-xxl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  transition: transform var(--transition-normal);
}

.feature-item:hover {
  transform: translateY(-4px);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--color-cream);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.feature-item h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.feature-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ========================================
   热门推荐
   ======================================== */
.popular-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--color-white);
}

/* ========================================
   最新文章
   ======================================== */
.latest-section {
  padding: var(--spacing-xxl) 0;
}

/* ========================================
   分类页面
   ======================================== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
}

.page-header p {
  opacity: 0.9;
}

.breadcrumb {
  padding: var(--spacing-sm) 0;
  background-color: var(--color-cream-dark);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb li:last-child {
  color: var(--color-text-muted);
}

.category-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.sidebar-widget {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-secondary);
}

.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-list a {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.5rem 0;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-list a:last-child {
  border-bottom: none;
}

.sidebar-list a:hover {
  color: var(--color-accent);
}

.sidebar-list .count {
  margin-left: auto;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background-color: var(--color-cream);
  padding: 0.125rem 0.5rem;
  border-radius: var(--border-radius-sm);
}

/* ========================================
   文章详情页
   ======================================== */
.article-header {
  background-color: var(--color-white);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.article-meta-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.article-category {
  background-color: var(--color-secondary);
  color: var(--color-primary-dark);
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

.article-meta-header time,
.article-meta-header span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.article-header h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

.article-featured-image {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-top: var(--spacing-md);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
}

.article-content {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--color-primary);
  margin: var(--spacing-lg) 0 var(--spacing-md);
}

.article-content h3 {
  font-size: 1.35rem;
  color: var(--color-primary);
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

.article-content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.article-content ul li {
  list-style: disc;
  margin-bottom: var(--spacing-xs);
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: var(--spacing-xs);
}

.article-content img {
  border-radius: var(--border-radius);
  margin: var(--spacing-md) 0;
}

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

.article-tags {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.article-tags span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.tag {
  display: inline-flex;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-cream);
  color: var(--color-primary);
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
}

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

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.article-nav-prev,
.article-nav-next {
  padding: var(--spacing-md);
  background-color: var(--color-cream);
  border-radius: var(--border-radius);
}

.article-nav-next {
  text-align: right;
}

.article-nav span {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.article-nav a {
  font-weight: 500;
  color: var(--color-primary);
}

/* ========================================
   404 页面
   ======================================== */
.error-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl);
}

.error-content {
  max-width: 500px;
}

.error-code {
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: bold;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.error-title {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.error-message {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.error-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

/* ========================================
   分页
   ======================================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.pagination a {
  background-color: var(--color-white);
  color: var(--color-text);
}

.pagination a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.pagination .current {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.pagination .disabled {
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand p {
  opacity: 0.8;
  margin-top: var(--spacing-sm);
  line-height: 1.7;
}

.footer h4 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-secondary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-white);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom p {
  opacity: 0.6;
  font-size: 0.9rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .category-layout,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: 2;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    gap: 0;
  }

  .nav.active {
    display: flex;
  }

  .nav a {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .menu-btn {
    display: flex;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .article-item {
    flex-direction: column;
  }

  .article-item-image {
    flex: none;
    aspect-ratio: 16 / 9;
  }

  .article-header h1 {
    font-size: 1.75rem;
  }

  .article-content {
    padding: var(--spacing-md);
  }

  .article-nav {
    grid-template-columns: 1fr;
  }

  .article-nav-next {
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .error-code {
    font-size: 5rem;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }
}