/* ========================================
   马拉松 - 马赛克杂志风格样式
   www.mogaipai.cn - 专注于马拉松旅游
   ======================================== */

/* 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: #e0e0e0;
  --border-color: #e8e8e8;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 64px;
}

/* 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 {
  color: inherit;
  text-decoration: none;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

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

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

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

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

/* ========================================
   面包屑 Breadcrumb
   ======================================== */

.breadcrumb {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.breadcrumb-separator {
  color: var(--text-muted);
}

/* ========================================
   主要内容区 Main
   ======================================== */

.main {
  padding: 32px 0;
}

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

.mosaic-grid {
  display: grid;
  gap: 24px;
  margin-bottom: 48px;
}

/* 首页网格布局 */
.mosaic-home {
  grid-template-columns: 2fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "headline sidebar"
    "features features";
}

/* 分类页网格布局 */
.mosaic-category {
  grid-template-columns: 2fr 1fr;
  grid-template-areas:
    "hero sidebar"
    "grid grid";
}

/* 文章页网格布局 */
.mosaic-article {
  grid-template-columns: 2fr 1fr;
  grid-template-areas:
    "content sidebar";
  gap: 32px;
}

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

.card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.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-category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent-color);
  color: var(--bg-white);
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.card-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

/* ========================================
   头条新闻 Headline
   ======================================== */

.headline {
  grid-area: headline;
}

.headline .card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

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

.headline .card-text {
  font-size: 1rem;
}

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

.sidebar {
  grid-area: sidebar;
}

.sidebar-widget {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
}

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

.sidebar-item {
  display: flex;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-item-number {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--bg-white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar-item-number.top {
  background: var(--accent-color);
}

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

.sidebar-item-title {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

.sidebar-item-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========================================
   特色内容区 Features
   ======================================== */

.features {
  grid-area: features;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-large {
  grid-row: span 2;
}

.feature-large .card-image {
  height: 100%;
  min-height: 400px;
}

.feature-large .card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--bg-white);
}

.feature-large .card-title {
  color: var(--bg-white);
  font-size: 1.25rem;
}

.feature-large .card-text {
  color: rgba(255,255,255,0.8);
}

.features-grid .card-image {
  height: 160px;
}

/* ========================================
   分类英雄区 Category Hero
   ======================================== */

.category-hero {
  grid-area: hero;
}

.category-hero .card {
  position: relative;
  height: 300px;
}

.category-hero .card-image {
  height: 100%;
}

.category-hero .card-image img {
  filter: brightness(0.7);
}

.category-hero .card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  color: var(--bg-white);
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.category-hero .card-title {
  color: var(--bg-white);
  font-size: 1.75rem;
}

.category-hero .card-text {
  color: rgba(255,255,255,0.9);
  font-size: 1rem;
}

/* ========================================
   文章网格 Article Grid
   ======================================== */

.article-grid {
  grid-area: grid;
}

.article-grid-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.article-grid .card-image {
  height: 180px;
}

.article-lead {
  grid-column: span 1;
  grid-row: span 2;
}

.article-lead .card-image {
  height: 100%;
  min-height: 380px;
}

.article-lead .card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--bg-white);
}

.article-lead .card-title {
  color: var(--bg-white);
}

.article-lead .card-text {
  color: rgba(255,255,255,0.8);
}

/* ========================================
   文章内容 Article Content
   ======================================== */

.article-content {
  grid-area: content;
}

.article-header {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.article-header-image {
  height: 360px;
}

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

.article-header-body {
  padding: 32px;
}

.article-category {
  display: inline-block;
  background: var(--accent-color);
  color: var(--bg-white);
  padding: 6px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

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

.article-body {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.article-body p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-body ul li {
  list-style: disc;
}

.article-body ol li {
  list-style: decimal;
}

.article-inline-media {
  margin: 32px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-inline-media img {
  width: 100%;
}

.article-inline-caption {
  background: var(--bg-light);
  padding: 12px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ========================================
   文章侧边栏 Article Sidebar
   ======================================== */

.article-sidebar .author-card {
  text-align: center;
  padding: 24px;
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  object-fit: cover;
}

.author-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.author-role {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.author-bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-light);
  color: var(--text-secondary);
  font-size: 0.8rem;
  border-radius: 20px;
  transition: all 0.2s;
}

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

/* ========================================
   推荐文章区 Recommended
   ======================================== */

.recommended {
  background: var(--bg-white);
  padding: 32px 0;
  margin-top: 32px;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.recommended-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.recommended-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: background 0.2s;
}

.recommended-item:hover {
  background: var(--bg-gray);
}

.recommended-item::before {
  content: "•";
  color: var(--accent-color);
  font-size: 1.5rem;
  line-height: 1;
}

.recommended-item a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

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

.columns-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.column-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
}

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

.column-item {
  display: flex;
  gap: 12px;
  font-size: 0.9rem;
}

.column-item::before {
  content: "›";
  color: var(--accent-color);
  font-weight: 600;
}

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

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

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

.footer {
  background: var(--text-primary);
  color: var(--bg-white);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand .logo {
  color: var(--bg-white);
  margin-bottom: 16px;
}

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

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--bg-white);
}

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

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

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

.error-page {
  min-height: calc(100vh - var(--header-height) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 0;
}

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

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.error-text {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-gray);
}

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

@media (max-width: 1024px) {
  .mosaic-home,
  .mosaic-category,
  .mosaic-article {
    grid-template-columns: 1fr;
    grid-template-areas:
      "headline"
      "sidebar"
      "features";
  }

  .mosaic-category {
    grid-template-areas:
      "hero"
      "sidebar"
      "grid";
  }

  .mosaic-article {
    grid-template-areas:
      "content"
      "sidebar";
  }

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

  .feature-large {
    grid-row: span 1;
  }

  .feature-large .card-image {
    min-height: 200px;
  }

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

  .article-lead {
    grid-column: span 2;
    grid-row: span 1;
  }

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

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

@media (max-width: 768px) {
  .nav {
    display: none;
  }

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

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

  .article-lead {
    grid-column: span 1;
  }

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

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

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

  .article-title {
    font-size: 1.5rem;
  }

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

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

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

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

  .main {
    padding: 20px 0;
  }

  .headline .card-image {
    height: 200px;
  }

  .headline .card-title {
    font-size: 1.125rem;
  }

  .category-hero .card {
    height: 220px;
  }

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