/* 智能家居系统 - 代码文档风格样式 */

/* CSS 变量定义 */
:root {
  --accent-color: #9c27b0;
  --accent-light: #ba68c8;
  --accent-dark: #7b1fa2;
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --border-color: #30363d;
  --success-color: #238636;
  --warning-color: #d29922;
  --danger-color: #da3633;
  --code-bg: #1f2937;
  --max-width: 1200px;
  --header-height: 64px;
  --sidebar-width: 280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* 头部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

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

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

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

.search-box {
  position: relative;
}

.search-box input {
  width: 240px;
  padding: 8px 16px 8px 40px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
}

/* 主内容区 */
.main {
  padding-top: var(--header-height);
  min-height: 100vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero 区域 */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-search {
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero-search input {
  width: 100%;
  padding: 16px 24px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
}

.hero-search input::placeholder {
  color: var(--text-muted);
}

/* 快速链接 */
.quick-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.quick-link {
  padding: 12px 24px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 500;
  transition: all 0.2s;
}

.quick-link:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* 内容区域 */
.content-section {
  padding: 60px 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-primary);
}

/* 主题列表 */
.topic-list {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.topic-item {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: background-color 0.2s;
}

.topic-item:last-child {
  border-bottom: none;
}

.topic-item:hover {
  background-color: var(--bg-tertiary);
}

.topic-icon {
  width: 40px;
  height: 40px;
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.topic-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.topic-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 三栏文章布局 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.article-column {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
}

.article-column h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.article-list {
  list-style: none;
}

.article-list li {
  margin-bottom: 12px;
}

.article-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.article-list a::before {
  content: "•";
  color: var(--accent-color);
}

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

/* 面包屑 */
.breadcrumb {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

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

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

.breadcrumb li:not(:last-child)::after {
  content: ">";
  margin-left: 8px;
  color: var(--text-muted);
}

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

/* 分类页面 */
.category-header {
  padding: 40px 0;
  border-bottom: 1px solid var(--border-color);
}

.category-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* 模块列表 */
.module-list {
  margin: 40px 0;
}

.module-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

.module-item:hover {
  border-color: var(--accent-color);
}

.module-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* 类列表 */
.class-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.class-item {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px 20px;
}

.class-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.class-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 文章详情页 */
.article-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: 40px;
  padding: 40px 0;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 40px);
  height: fit-content;
}

.sidebar h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav li {
  margin-bottom: 8px;
}

.sidebar-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* 文章内容 */
.article-content {
  max-width: 800px;
}

.article-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 40px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 代码块 */
.code-block {
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  overflow-x: auto;
}

.code-block pre {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.code-header span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 参数表格 */
.params-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.params-table th,
.params-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.params-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.params-table code {
  background-color: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--accent-light);
}

/* 推荐文章区 */
.recommended-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.recommended-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

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

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

/* 404 页面 */
.error-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 24px;
}

.error-page h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.error-page p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 400px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background-color: var(--accent-color);
  color: var(--text-primary);
  border-radius: 8px;
  font-weight: 500;
  transition: background-color 0.2s;
}

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

/* 页脚 */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  margin-top: 80px;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--text-primary);
}

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

  .sidebar {
    position: static;
    order: 2;
  }

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

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

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

  .search-box {
    display: none;
  }

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

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

  .quick-links {
    flex-direction: column;
    align-items: center;
  }

  .quick-link {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

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

  .article-content h2 {
    font-size: 1.4rem;
  }

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

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

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

  .header-container {
    padding: 0 16px;
  }

  .topic-item {
    flex-direction: column;
    align-items: flex-start;
  }
}