/* ========================================
   咖啡豆 - 马赛克杂志风格 CSS
   ======================================== */

/* CSS 变量 */
:root {
  --accent-color: #6b4c3a;
  --accent-light: #8b6914;
  --bg-primary: #faf8f5;
  --bg-secondary: #f5f0eb;
  --bg-card: #ffffff;
  --text-primary: #2c2416;
  --text-secondary: #6b5b4f;
  --text-muted: #9a8b7a;
  --border-color: #e8e0d8;
  --shadow-sm: 0 2px 4px rgba(44, 36, 22, 0.06);
  --shadow-md: 0 4px 12px rgba(44, 36, 22, 0.1);
  --shadow-lg: 0 8px 24px rgba(44, 36, 22, 0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

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

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

ul {
  list-style: none;
}

/* ========================================
   布局容器
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   页头 Header
   ======================================== */

.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--accent-color);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav a:hover,
.nav a.active {
  color: var(--accent-color);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -24px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-color);
  border-radius: 2px 2px 0 0;
}

/* ========================================
   面包屑导航
   ======================================== */

.breadcrumb {
  background: var(--bg-secondary);
  padding: 16px 0;
  font-size: 14px;
  color: var(--text-muted);
}

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

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

.breadcrumb span {
  margin: 0 8px;
}

/* ========================================
   主内容区
   ======================================== */

.main {
  padding: 32px 0;
}

/* ========================================
   马赛克网格布局
   ======================================== */

.mosaic-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

/* 首页网格 */
.mosaic-home {
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto;
  grid-template-areas:
    "headline headline headline sidebar"
    "feature-large feature-large story-1 story-2"
    "feature-large feature-large story-3 story-4";
}

/* 分类页网格 */
.mosaic-category {
  grid-template-columns: repeat(4, 1fr);
  grid-template-areas:
    "hero hero hero sidebar"
    "lead lead item-1 item-2"
    "item-3 item-4 item-5 item-6";
}

/* ========================================
   卡片组件
   ======================================== */

.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-image {
  position: relative;
  overflow: hidden;
}

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

.card:hover .card-image img {
  transform: scale(1.03);
}

.card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent-color);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 头条卡片 */
.card-headline {
  grid-area: headline;
  display: flex;
  flex-direction: column;
}

.card-headline .card-image {
  height: 320px;
}

.card-headline .card-title {
  font-size: 28px;
}

.card-headline .card-excerpt {
  font-size: 16px;
  -webkit-line-clamp: 3;
}

/* 特色大卡片 */
.card-feature-large {
  grid-area: feature-large;
}

.card-feature-large .card-image {
  height: 280px;
}

.card-feature-large .card-title {
  font-size: 22px;
}

/* 普通故事卡片 */
.card-story {
  display: flex;
  flex-direction: column;
}

.card-story .card-image {
  height: 140px;
}

.card-story .card-title {
  font-size: 15px;
}

.card-story .card-excerpt {
  display: none;
}

/* 分类页 Hero */
.card-hero {
  grid-area: hero;
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
}

.card-hero .card-image {
  position: absolute;
  inset: 0;
}

.card-hero .card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(44, 36, 22, 0.8), transparent);
}

.card-hero .card-content {
  position: relative;
  z-index: 1;
  color: #fff;
  width: 100%;
}

.card-hero .card-title {
  color: #fff;
  font-size: 32px;
}

.card-hero .card-title:hover {
  color: #fff;
  opacity: 0.9;
}

.card-hero .card-excerpt {
  color: rgba(255, 255, 255, 0.8);
}

/* 分类页 Lead */
.card-lead {
  grid-area: lead;
}

.card-lead .card-image {
  height: 240px;
}

.card-lead .card-title {
  font-size: 20px;
}

/* 分类项 */
.card-item {
  display: flex;
  flex-direction: column;
}

.card-item .card-image {
  height: 140px;
}

.card-item .card-title {
  font-size: 15px;
}

.card-item .card-excerpt {
  display: none;
}

/* ========================================
   侧边栏
   ======================================== */

.sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.widget {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
}

.widget-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.widget-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.widget-item-number {
  width: 24px;
  height: 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-color);
  flex-shrink: 0;
}

.widget-item-number.top {
  background: var(--accent-color);
  color: #fff;
}

.widget-item-content {
  flex: 1;
}

.widget-item-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
}

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

.widget-item-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  transition: var(--transition);
}

.tag:hover {
  background: var(--accent-color);
  color: #fff;
}

/* ========================================
   三栏推荐区
   ======================================== */

.recommended-section {
  background: var(--bg-secondary);
  padding: 40px 0;
  margin-top: 40px;
}

.recommended-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.recommended-col {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.recommended-col-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
}

.recommended-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.recommended-item {
  display: flex;
  gap: 12px;
}

.recommended-item-image {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.recommended-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recommended-item-content {
  flex: 1;
}

.recommended-item-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 6px;
}

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

.recommended-item-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* 相关文章横向 */
.related-horizontal {
  margin-bottom: 30px;
}

.related-horizontal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.related-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-tag {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.related-tag:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* ========================================
   文章详情页
   ======================================== */

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
}

.article-main {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-category {
  display: inline-block;
  background: var(--accent-color);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-muted);
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
}

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

.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 16px;
}

.article-content ul,
.article-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

.article-content strong {
  color: var(--accent-color);
}

.article-content blockquote {
  background: var(--bg-secondary);
  border-left: 4px solid var(--accent-color);
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-content img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

/* 作者卡片 */
.author-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-top: 40px;
}

.author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.author-bio {
  font-size: 14px;
  color: var(--text-secondary);
}

/* 文章侧边栏 */
.article-sidebar .widget {
  margin-bottom: 20px;
}

/* ========================================
   404 页面
   ======================================== */

.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}

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

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 20px;
  opacity: 0.8;
}

.error-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}

.btn-primary {
  background: var(--accent-color);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-light);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

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

/* ========================================
   页脚
   ======================================== */

.footer {
  background: var(--text-primary);
  color: #fff;
  padding: 48px 0 24px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-logo span {
  color: var(--accent-light);
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.9);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
  .mosaic-home {
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas:
      "headline headline"
      "sidebar sidebar"
      "feature-large feature-large"
      "story-1 story-2"
      "story-3 story-4";
  }

  .mosaic-category {
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas:
      "hero hero"
      "sidebar sidebar"
      "lead lead"
      "item-1 item-2"
      "item-3 item-4"
      "item-5 item-6";
  }

  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar .widget {
    flex: 1;
    min-width: 280px;
  }

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

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

  .article-sidebar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }

  .logo-text {
    font-size: 18px;
  }

  .nav {
    display: none;
  }

  .mosaic-home,
  .mosaic-category {
    grid-template-columns: 1fr;
    grid-template-areas:
      "headline"
      "sidebar"
      "feature-large"
      "story-1"
      "story-2"
      "story-3"
      "story-4";
  }

  .mosaic-category {
    grid-template-areas:
      "hero"
      "sidebar"
      "lead"
      "item-1"
      "item-2"
      "item-3"
      "item-4"
      "item-5"
      "item-6";
  }

  .card-headline .card-title {
    font-size: 22px;
  }

  .card-hero .card-title {
    font-size: 24px;
  }

  .article-main {
    padding: 24px;
  }

  .article-title {
    font-size: 24px;
  }

  .article-image {
    height: 240px;
  }

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

  .error-code {
    font-size: 80px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .sidebar {
    flex-direction: column;
  }

  .sidebar .widget {
    min-width: auto;
  }

  .error-actions {
    flex-direction: column;
  }
}