/* ============================================
   文档教程网站 - 全局样式表
   ============================================ */

:root {
  --primary-color: #1e88e5;
  --primary-dark: #1565c0;
  --bg-light: #ffffff;
  --bg-sidebar: #f8f9fa;
  --bg-toolbar: #f5f5f5;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #e0e0e0;
  --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 2px 8px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s ease;
}

body.dark-mode {
  --bg-light: #1e1e1e;
  --bg-sidebar: #252526;
  --bg-toolbar: #2d2d30;
  --text-primary: #e8e8e8;
  --text-secondary: #b4b4b4;
  --text-light: #808080;
  --border-color: #3e3e42;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body.serif-font {
  font-family: Georgia, "Times New Roman", serif;
}

/* ============================================
   主容器布局
   ============================================ */

.doc-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

/* ============================================
   侧边栏样式
   ============================================ */

.doc-sidebar {
  width: 280px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: var(--transition);
}

.doc-sidebar.collapsed {
  width: 0;
  border-right: none;
}

.sidebar-search {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.sidebar-search form {
  position: relative;
  display: flex;
}

.sidebar-search input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 13px;
  background-color: var(--bg-light);
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

.sidebar-search input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(30, 136, 229, 0.1);
}

.sidebar-search .search-btn {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  color: var(--text-light);
  font-size: 14px;
  transition: var(--transition);
}

.sidebar-search .search-btn:hover {
  color: var(--primary-color);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 12px;
  right: 12px;
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-top: none;
  border-radius: 0 0 4px 4px;
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
  display: none;
  box-shadow: var(--shadow-medium);
}

.search-results.active {
  display: block;
}

.search-result-item {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}

.search-result-item:hover {
  background-color: var(--bg-toolbar);
}

.search-result-item a {
  text-decoration: none;
  color: var(--text-primary);
  display: block;
}

.search-result-title {
  font-weight: 500;
  font-size: 13px;
  margin-bottom: 2px;
}

.search-result-excerpt {
  font-size: 12px;
  color: var(--text-light);
}

.project-title {
  padding: 16px 12px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.project-title a {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.project-title a:hover {
  color: var(--primary-color);
}

.project-icon {
  font-size: 20px;
}

/* ============================================
   侧边栏导航
   ============================================ */

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

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

.nav-item {
  margin: 0;
}

.nav-item-header {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-toggle {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  transform: rotate(0deg);
}

.nav-toggle.open {
  transform: rotate(90deg);
}

.nav-link {
  flex: 1;
  padding: 8px 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 13px;
  display: block;
  border-radius: 4px;
  transition: var(--transition);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--bg-toolbar);
  color: var(--primary-color);
}

.nav-link.active {
  background-color: rgba(30, 136, 229, 0.1);
  color: var(--primary-color);
  font-weight: 500;
}

.nav-icon {
  margin-right: 4px;
  font-size: 12px;
}

.sub-menu {
  list-style: none;
  max-height: 0;
  overflow: hidden;
  transition: var(--transition);
}

.sub-menu.open {
  max-height: 1000px;
}

.sub-menu .nav-item {
  margin-left: 8px;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
  text-align: center;
}

.sidebar-footer a {
  font-size: 12px;
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition);
}

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

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

.doc-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.doc-toolbar {
  background-color: var(--bg-toolbar);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.toolbar-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 13px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
}

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

.toolbar-btn svg {
  width: 16px;
  height: 16px;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
  margin: 0 4px;
}

.toolbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-light);
  margin-left: 8px;
}

.toolbar-breadcrumb a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.toolbar-breadcrumb a:hover {
  text-decoration: underline;
}

.toolbar-breadcrumb .sep {
  color: var(--text-light);
}

.toolbar-spacer {
  flex: 1;
}

/* ============================================
   文档内容区域
   ============================================ */

.doc-content-wrapper {
  flex: 1;
  overflow-y: auto;
  background-color: var(--bg-light);
}

.doc-content-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px;
}

.doc-title-section {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
}

.doc-title-section h1 {
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

/* ============================================
   Markdown 内容样式
   ============================================ */

.markdown-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
}

.markdown-body h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 24px 0 12px 0;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.markdown-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 18px 0 10px 0;
  color: var(--text-primary);
}

.markdown-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 12px 0 8px 0;
  color: var(--text-primary);
}

.markdown-body p {
  margin: 12px 0;
}

.markdown-body ul, .markdown-body ol {
  margin: 12px 0;
  padding-left: 24px;
}

.markdown-body li {
  margin: 6px 0;
}

.markdown-body blockquote {
  border-left: 4px solid var(--primary-color);
  background-color: var(--bg-toolbar);
  padding: 12px 16px;
  margin: 12px 0;
  border-radius: 4px;
}

.markdown-body blockquote p {
  margin: 0;
}

.markdown-body code {
  background-color: var(--bg-toolbar);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: "Monaco", "Courier New", monospace;
  font-size: 13px;
  color: #d63384;
}

.markdown-body pre {
  background-color: var(--bg-toolbar);
  padding: 12px 16px;
  border-radius: 4px;
  overflow-x: auto;
  margin: 12px 0;
}

.markdown-body pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

.markdown-body a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.markdown-body a:hover {
  text-decoration: underline;
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
}

.markdown-body th, .markdown-body td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

.markdown-body th {
  background-color: var(--bg-toolbar);
  font-weight: 600;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 12px 0;
}

.image-placeholder {
  background-color: var(--bg-toolbar);
  border: 2px dashed var(--border-color);
  border-radius: 4px;
  padding: 40px;
  text-align: center;
  margin: 12px 0;
  color: var(--text-light);
  font-size: 13px;
}

/* ============================================
   标签页样式
   ============================================ */

.tab-container {
  margin: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.tab-list {
  display: flex;
  gap: 0;
  list-style: none;
}

.tab-item {
  margin: 0;
}

.tab-link {
  display: block;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
  font-weight: 500;
}

.tab-link:hover {
  color: var(--text-primary);
}

.tab-link.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  display: none;
  padding: 16px 0;
}

.tab-content.active {
  display: block;
}

/* ============================================
   文档页脚
   ============================================ */

.doc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  margin-top: 40px;
  border-top: 1px solid var(--border-color);
}

.doc-author {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), #42a5f5);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.share-btn:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-medium);
}

.share-btn svg {
  width: 14px;
  height: 14px;
}

/* ============================================
   模态框样式
   ============================================ */

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background-color: var(--bg-light);
  border-radius: 8px;
  box-shadow: var(--shadow-medium);
  max-width: 500px;
  width: 90%;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-light);
  transition: var(--transition);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-url {
  display: flex;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

.modal-url input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 13px;
  background-color: var(--bg-toolbar);
  color: var(--text-primary);
  outline: none;
}

.modal-url button {
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.modal-url button:hover {
  background-color: var(--primary-dark);
}

.modal-share-icons {
  display: flex;
  gap: 12px;
  padding: 16px;
  justify-content: center;
}

.share-icon-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 12px 16px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 12px;
  color: var(--text-primary);
}

.share-icon-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.share-icon-btn .icon {
  font-size: 20px;
}

/* ============================================
   提示框样式
   ============================================ */

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #333;
  color: white;
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 13px;
  z-index: 3000;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  pointer-events: auto;
}

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

@media (max-width: 768px) {
  .doc-wrapper {
    flex-direction: column;
  }

  .doc-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 998;
    box-shadow: var(--shadow-medium);
  }

  .doc-sidebar.collapsed {
    transform: translateX(-100%);
  }

  .mobile-overlay.active {
    display: block;
  }

  .doc-main {
    width: 100%;
  }

  .doc-toolbar {
    flex-wrap: wrap;
    gap: 6px;
  }

  .toolbar-breadcrumb {
    order: 3;
    width: 100%;
    margin-left: 0;
    margin-top: 6px;
  }

  .toolbar-spacer {
    display: none;
  }

  .doc-content-inner {
    padding: 20px;
  }

  .doc-title-section h1 {
    font-size: 24px;
  }

  .markdown-body {
    font-size: 14px;
  }

  .markdown-body h2 {
    font-size: 20px;
  }

  .markdown-body h3 {
    font-size: 16px;
  }

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

  .tab-list {
    flex-wrap: wrap;
  }

  .tab-link {
    padding: 10px 12px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .doc-content-inner {
    padding: 16px;
  }

  .doc-title-section h1 {
    font-size: 20px;
  }

  .markdown-body h2 {
    font-size: 18px;
  }

  .modal {
    width: 95%;
  }

  .modal-share-icons {
    flex-direction: column;
  }

  .share-icon-btn {
    width: 100%;
  }
}

/* ============================================
   滚动条美化
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}