/* ===== 农机补贴网站样式 - 马赛克杂志风格 ===== */
/* 主色调: #673ab7 (紫色) */

/* ===== CSS 变量 ===== */
:root {
  --accent-color: #673ab7;
  --accent-light: #9575cd;
  --accent-dark: #512da8;
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-white: #fff;
  --bg-light: #f5f5f5;
  --bg-gray: #eee;
  --border-color: #e0e0e0;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
  --radius: 4px;
  --radius-lg: 8px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-light);
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: color 0.2s;
}

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

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 {
  background: var(--bg-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

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

.nav {
  display: flex;
  gap: 30px;
}

.nav a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 5px 0;
  border-bottom: 2px solid transparent;
}

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

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--bg-gray);
  padding: 12px 0;
  font-size: 0.875rem;
}

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

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

.breadcrumb span {
  color: var(--text-muted);
  margin: 0 8px;
}

.breadcrumb strong {
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== 主内容区 ===== */
.main {
  padding: 30px 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: 2fr 1fr;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "headline sidebar"
    "feature stories-top"
    "feature stories-bottom";
}

/* 分类页网格 */
.mosaic-category {
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "hero hero sidebar"
    "lead item1 item2";
}

/* 文章页网格 */
.mosaic-article {
  grid-template-columns: 2fr 1fr;
  grid-template-areas:
    "article-head sidebar"
    "article-content sidebar";
}

/* ===== 卡片组件 ===== */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
}

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

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

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.card-content {
  padding: 20px;
}

.card-tag {
  display: inline-block;
  background: var(--accent-color);
  color: var(--bg-white);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.card-title a {
  color: inherit;
}

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

.card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 15px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ===== 特色内容区 ===== */
.headline-card {
  grid-area: headline;
  min-height: 400px;
  display: flex;
  flex-direction: column;
}

.headline-card .card-image {
  height: 250px;
}

.headline-card .card-title {
  font-size: 1.75rem;
}

.feature-large {
  grid-area: feature;
  min-height: 500px;
}

.feature-large .card-image {
  height: 300px;
}

.feature-large .card-title {
  font-size: 1.5rem;
}

/* ===== 侧边栏 ===== */
.sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.widget-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent-color);
}

.widget-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.widget-list li:last-child {
  border-bottom: none;
}

.widget-list a {
  color: var(--text-primary);
  display: block;
  line-height: 1.5;
}

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

.widget-list .meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 5px;
}

/* ===== 故事卡片网格 ===== */
.stories-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stories-top {
  grid-area: stories-top;
}

.stories-bottom {
  grid-area: stories-bottom;
}

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

.story-card .card-image {
  height: 120px;
}

.story-card .card-content {
  padding: 15px;
}

.story-card .card-title {
  font-size: 1rem;
  margin-bottom: 8px;
}

/* ===== 分类英雄区 ===== */
.category-hero {
  grid-area: hero;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--bg-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 250px;
}

.category-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.category-hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
}

/* ===== 分类内容网格 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.category-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
}

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

.category-item .item-image {
  height: 150px;
  overflow: hidden;
}

.category-item .item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.category-item:hover .item-image img {
  transform: scale(1.1);
}

.category-item .item-content {
  padding: 15px;
}

.category-item .item-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.category-item .item-title a {
  color: var(--text-primary);
}

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

.category-item .item-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===== 文章页样式 ===== */
.article-head {
  grid-area: article-head;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.article-head .article-image {
  height: 350px;
  overflow: hidden;
}

.article-head .article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-head .article-header {
  padding: 30px;
}

.article-head .article-tag {
  display: inline-block;
  background: var(--accent-color);
  color: var(--bg-white);
  font-size: 0.875rem;
  padding: 6px 14px;
  border-radius: var(--radius);
  margin-bottom: 15px;
}

.article-head h1 {
  font-size: 2rem;
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-head .article-meta {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.article-content {
  grid-area: article-content;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  margin-top: 20px;
}

.article-content p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 25px 0 12px;
  color: var(--text-primary);
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 25px;
}

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

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

.article-content blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 20px;
  margin: 25px 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* ===== 作者组件 ===== */
.author-widget {
  text-align: center;
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 15px;
  overflow: hidden;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.author-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

.tag-cloud a {
  display: inline-block;
  padding: 6px 12px;
  background: var(--bg-light);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.tag-cloud a:hover {
  background: var(--accent-color);
  color: var(--bg-white);
}

/* ===== 推荐文章区 ===== */
.recommended-section {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-top: 40px;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 25px;
  text-align: center;
}

.related-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}

.related-links a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 8px 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.related-links a:hover {
  background: var(--accent-color);
  color: var(--bg-white);
}

.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.column-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent-color);
}

.column-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.column-list li:last-child {
  border-bottom: none;
}

.column-list a {
  color: var(--text-primary);
  display: block;
}

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

.column-list .date {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 5px;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--text-primary);
  color: var(--bg-white);
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-brand .logo {
  color: var(--bg-white);
  margin-bottom: 15px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: var(--bg-white);
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-top: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ===== 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: 8rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 20px;
}

.error-title {
  font-size: 1.75rem;
  margin-bottom: 15px;
}

.error-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.error-btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--accent-color);
  color: var(--bg-white);
  border-radius: var(--radius);
  font-weight: 500;
}

.error-btn:hover {
  background: var(--accent-dark);
  color: var(--bg-white);
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
  .mosaic-home {
    grid-template-columns: 1fr;
    grid-template-areas:
      "headline"
      "sidebar"
      "feature"
      "stories-top"
      "stories-bottom";
  }

  .mosaic-category {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "hero hero"
      "sidebar sidebar"
      "lead item1"
      "item2 .";
  }

  .mosaic-article {
    grid-template-columns: 1fr;
    grid-template-areas:
      "article-head"
      "article-content"
      "sidebar";
  }

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

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

  .two-columns {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 15px 0;
  }

  .nav {
    width: 100%;
    justify-content: center;
    margin-top: 15px;
    gap: 20px;
    flex-wrap: wrap;
  }

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

  .mosaic-category {
    grid-template-columns: 1fr;
    grid-template-areas:
      "hero"
      "sidebar"
      "lead"
      "item1"
      "item2";
  }

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

  .category-hero {
    padding: 30px 20px;
  }

  .category-hero h1 {
    font-size: 1.75rem;
  }

  .article-head h1 {
    font-size: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .related-links {
    flex-direction: column;
    gap: 10px;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .card-content,
  .widget,
  .article-content,
  .recommended-section {
    padding: 20px;
  }

  .headline-card .card-title {
    font-size: 1.25rem;
  }

  .article-head .article-image {
    height: 200px;
  }
}