/* ============================================================
   王者Quant - 量化交易文档站
   设计风格：专业、简洁、金融科技感
   主色：深蓝 #1a365d  点缀：金色 #c8a45c
   ============================================================ */

/* ==================== CSS 变量 ==================== */
:root {
  /* 主色系 */
  --primary: #1a365d;
  --primary-light: #2b5a8c;
  --primary-bg: rgba(26, 54, 93, 0.06);
  --primary-border: rgba(26, 54, 93, 0.15);

  /* 金色点缀 */
  --accent: #c8a45c;
  --accent-light: #dab86e;
  --accent-bg: rgba(200, 164, 92, 0.1);

  /* 中性色 */
  --bg: #ffffff;
  --bg-alt: #f8f9fb;
  --bg-code: #f4f5f7;
  --border: #e2e6ea;
  --border-light: #eef0f3;

  /* 文字色 */
  --text: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #a0aec0;
  --text-link: #2b5a8c;

  /* 侧边栏 */
  --sidebar-bg: #fafbfc;
  --sidebar-width: 300px;
  --sidebar-active: var(--primary);

  /* 搜索 */
  --search-bg: #ffffff;
  --search-border: #d2d6dc;
  --search-focus: var(--primary-light);

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-code: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;

  /* 圆角 */
  --radius: 8px;
  --radius-lg: 12px;
}

/* ==================== 全局基础 ==================== */
* { box-sizing: border-box; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  padding: 0;
  margin: 0;
}

/* ==================== 封面页 ==================== */
.cover {
  background: linear-gradient(160deg, #f0f4f8 0%, #e8eef5 50%, #f0f4f8 100%) !important;
  color: var(--text) !important;
}

.cover-main {
  background: transparent !important;
}

.cover-main-content {
  text-align: center;
  padding: 60px 40px;
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(26, 54, 93, 0.08);
}

.cover-main-content h1 {
  font-family: var(--font);
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.cover-main-content h1 .gradient-text {
  color: var(--primary);
}

.cover-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.cover-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

.copyright-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.cover-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cover-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-link);
  text-decoration: none;
  border: 1px solid var(--primary-border);
  border-radius: 6px;
  transition: all 0.2s;
}

.cover-link:hover {
  background: var(--primary-bg);
  border-color: var(--primary-light);
}

.cover-link.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.cover-link.primary:hover {
  background: var(--primary-light);
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  background: var(--sidebar-bg) !important;
  border-right: 1px solid var(--border) !important;
  width: var(--sidebar-width) !important;
  padding: 0 !important;
  font-family: var(--font) !important;
}

/* 品牌区 */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.sidebar-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

/* 主题切换 */
.sidebar-theme-toggle {
  display: flex;
  justify-content: center;
  padding: 8px 20px 12px;
  border-bottom: 1px solid var(--border);
}

.navbar-theme-toggle {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--bg-alt);
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar-theme-toggle:hover {
  background: var(--primary-bg);
  transform: rotate(15deg);
}

/* 侧边栏链接 */
.sidebar ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.sidebar ul li {
  margin: 0;
  padding: 0;
}

.sidebar ul li a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 20px 6px 32px;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}

.sidebar ul li a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}

.sidebar ul li a.active,
.sidebar ul li a.router-link-active {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
  border-left-color: var(--primary);
}

/* 侧边栏分组标题 */
.sidebar ul li strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 16px 20px 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==================== 顶部导航栏 ==================== */
.app-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.app-nav::before {
  content: '';
}

.app-nav a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

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

.app-nav ul ul a {
  padding: 8px 16px;
  display: block;
  font-size: 13px;
}

.app-nav ul ul a:hover {
  background: var(--primary-bg);
}

/* ==================== 内容区 ==================== */
.content {
  padding-top: 20px;
}

.markdown-section {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 2.5rem;
  color: var(--text);
}

/* 标题 */
.markdown-section h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin: 2rem 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-light);
}

.markdown-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary);
  margin: 2rem 0 1rem;
}

.markdown-section h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.5rem 0 0.8rem;
}

.markdown-section h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.2rem 0 0.6rem;
}

/* 段落 */
.markdown-section p {
  margin: 1rem 0;
  line-height: 1.8;
}

/* 链接 */
.markdown-section a {
  color: var(--text-link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.15s;
}

.markdown-section a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* 按钮（README 中的导航按钮） */
.markdown-section a.tech-nav-button {
  display: inline-block;
  padding: 12px 28px;
  margin: 8px;
  font-weight: 600;
  font-size: 1rem;
  color: #fff !important;
  background: var(--primary);
  border: none;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s;
  border-bottom: none;
}

.markdown-section a.tech-nav-button:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 54, 93, 0.2);
}

.markdown-section a.tech-nav-button .tech-icon {
  margin-right: 8px;
}

/* AI按钮 - 蓝 */
.markdown-section a.ai-code-button { background: var(--primary); }
/* 文档按钮 - 金 */
.markdown-section a.docs-button { background: var(--accent); color: var(--primary) !important; }
/* 分享按钮 - 深蓝 */
.markdown-section a.tech-share-button { background: var(--primary-light); }

/* 引用块 */
.markdown-section blockquote {
  background: var(--primary-bg);
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  margin: 1.2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
  font-style: normal;
}

.markdown-section blockquote p {
  color: var(--text-secondary);
  margin: 0;
}

/* 列表 */
.markdown-section ul,
.markdown-section ol {
  padding-left: 1.8rem;
  margin: 1rem 0;
}

.markdown-section li {
  margin: 0.4rem 0;
  line-height: 1.8;
}

/* ==================== 代码块 ==================== */
.markdown-section pre {
  background: #1e293b;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 1.2rem 0;
  overflow-x: auto;
  position: relative;
}

.markdown-section pre code {
  font-family: var(--font-code);
  font-size: 0.88rem;
  line-height: 1.6;
  color: #e2e8f0;
}

/* 行内代码 */
.markdown-section :not(pre) > code {
  font-family: var(--font-code);
  background: var(--bg-code);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  border: 1px solid var(--border-light);
}

/* 复制按钮 */
.markdown-section pre .docsify-copy-code-button {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.1);
  color: #a0aec0;
  border: 1px solid rgba(255,255,255,0.15);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s;
  font-family: var(--font);
}

.markdown-section pre:hover .docsify-copy-code-button {
  opacity: 1;
}

.markdown-section pre .docsify-copy-code-button:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

/* ==================== 表格 ==================== */
.markdown-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.markdown-section table th {
  background: var(--bg-alt);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
  padding: 10px 16px;
  text-align: left;
  border-bottom: 2px solid var(--border);
}

.markdown-section table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}

.markdown-section table tr:hover td {
  background: var(--primary-bg);
}

.markdown-section table tr:last-child td {
  border-bottom: none;
}

/* ==================== 搜索框 ==================== */
.sidebar .search {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  margin: 0;
}

.sidebar .search input {
  width: 100%;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-family: var(--font);
  background: var(--search-bg);
  border: 1px solid var(--search-border);
  border-radius: 6px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.sidebar .search input:focus {
  border-color: var(--search-focus);
  box-shadow: 0 0 0 3px rgba(43, 90, 140, 0.1);
}

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

/* 搜索结果 */
.results-panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  max-height: 400px;
  overflow-y: auto;
  margin-top: 4px;
}

.results-panel .matching-post {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.1s;
}

.results-panel .matching-post:hover {
  background: var(--primary-bg);
}

.results-panel .matching-post p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ==================== 翻页导航 ==================== */
.page-nav-sep {
  margin: 32px 0 16px;
  height: 1px;
  border: 0;
  background: var(--border);
}

.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.page-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--primary) !important;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.15s;
  max-width: calc(50% - 6px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-nav a:hover {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
}

.page-nav a .label {
  font-weight: 600;
  color: inherit;
}

.page-nav a .title {
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-nav-empty {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 10px 18px;
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(26,54,93,0.2);
  transition: all 0.2s;
  z-index: 1000;
}

.back-to-top:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.back-to-top.show {
  display: flex;
}

/* ==================== 响应式 ==================== */

/* 桌面端 */
@media (min-width: 769px) {
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 20;
  }

  .content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
  }

  .sidebar-toggle {
    display: none !important;
  }

  .sidebar-overlay {
    display: none !important;
  }
}

/* 移动端 */
@media (max-width: 768px) {
  .app-nav {
    display: none !important;
  }

  /* 侧边栏 - 抽屉模式 */
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg) !important;
    border-right: 1px solid var(--border);
    z-index: 200;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    padding: 0;
  }

  .sidebar.show {
    transform: translateX(0);
  }

  /* 切换按钮 */
  .sidebar-toggle {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 201;
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(26,54,93,0.15);
  }

  .sidebar-toggle:hover {
    background: var(--primary-light);
  }

  /* 遮罩 */
  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 199;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s;
  }

  .sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
  }

  /* 内容区 */
  .content {
    left: 0;
    width: 100%;
    padding: 0;
    position: static;
  }

  .markdown-section {
    padding: 20px 16px 40px;
  }

  .markdown-section h1 {
    font-size: 1.6rem;
  }

  .markdown-section h2 {
    font-size: 1.3rem;
  }

  .markdown-section table {
    font-size: 0.85rem;
    display: block;
    overflow-x: auto;
  }

  /* 封面页 */
  .cover-main-content {
    padding: 40px 20px;
    margin: 16px;
  }

  .cover-main-content h1 {
    font-size: 2rem;
  }

  .cover-subtitle {
    font-size: 1rem;
  }

  .cover-links {
    flex-direction: column;
    gap: 8px;
  }

  .cover-link {
    width: 100%;
    text-align: center;
  }

  /* 翻页 */
  .page-nav {
    flex-direction: column;
  }

  .page-nav a {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .sidebar {
    width: 260px;
  }

  .sidebar-toggle {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .markdown-section {
    padding: 16px 12px 32px;
  }
}

/* ==================== 暗色模式 ==================== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --bg-alt: #1a1d27;
    --bg-code: #1e2130;
    --border: #2a2d3a;
    --border-light: #22253a;
    --sidebar-bg: #13151e;
    --text: #e2e8f0;
    --text-secondary: #a0aec0;
    --text-muted: #5a6378;
    --text-link: #6ba3d6;
    --search-bg: #1a1d27;
    --search-border: #2a2d3a;
    --primary-bg: rgba(107, 163, 214, 0.08);
    --primary-border: rgba(107, 163, 214, 0.2);
  }

  .cover {
    background: linear-gradient(160deg, #0f1117 0%, #1a1d27 50%, #0f1117 100%) !important;
  }

  .cover-main-content {
    background: var(--bg-alt);
    border-color: var(--border);
  }

  .markdown-section pre {
    background: #0d1117;
  }

  .results-panel {
    background: var(--bg-alt);
    border-color: var(--border);
  }
}