/* ========================================
   Quarto Book 自定义样式
   ======================================== */

/* -------------------- 侧边栏样式 -------------------- */

/* 侧边栏整体 */
#quarto-sidebar {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

/* 侧边栏标题 */
.sidebar-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 1rem;
  padding: 0 1rem;
}

/* 侧边栏工具栏 */
.sidebar-tools-main {
  padding: 0.5rem 1rem;
  margin-bottom: 0.5rem;
}

/* 侧边栏搜索框 */
.sidebar-search {
  padding: 0 1rem;
  margin-bottom: 1rem;
}

.sidebar-search input {
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  border: 1px solid #dee2e6;
  font-size: 0.9rem;
}

/* 侧边栏菜单项 */
.sidebar-menu-container {
  padding: 0 0.5rem;
}

.sidebar-item {
  margin: 0.25rem 0;
}

.sidebar-item-text {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  display: block;
  transition: background-color 0.2s ease;
}

.sidebar-item-text:hover {
  background-color: #f8f9fa;
  text-decoration: none;
}

/* 分区标题（part） */
.sidebar-item-section > .sidebar-item-text {
  font-weight: 600;
  color: #2c3e50;
  margin-top: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e9ecef;
}

/* 章节项 */
.sidebar-item-link {
  color: #495057;
  font-size: 0.95rem;
  padding-left: 1.5rem;
}

.sidebar-item-link.active {
  color: #3498db;
  font-weight: 500;
  background-color: #e8f4fd;
}

/* -------------------- 导航栏样式 -------------------- */

.quarto-secondary-nav {
  padding: 0.75rem 1.5rem;
  background-color: #f8f9fa;
  border-bottom: 1px solid #dee2e6;
}

.quarto-page-breadcrumbs {
  font-size: 0.9rem;
}

/* -------------------- 内容区域样式 -------------------- */

#quarto-content {
  padding: 1.5rem;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  color: #2c3e50;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

h1.title {
  font-size: 2rem;
  font-weight: 700;
  border-bottom: 2px solid #3498db;
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  border-bottom: 1px solid #e9ecef;
  padding-bottom: 0.3rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

/* 段落样式 */
p {
  line-height: 1.8;
  margin-bottom: 1rem;
}

/* 链接样式 */
a {
  color: #3498db;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #2980b9;
  text-decoration: underline;
}

/* -------------------- 表格样式 -------------------- */

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

table thead th {
  background-color: #3498db;
  color: white;
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid #2980b9;
}

table tbody td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid #dee2e6;
  vertical-align: middle;
}

table tbody tr:nth-child(even) {
  background-color: #f8f9fa;
}

table tbody tr:hover {
  background-color: #e8f4fd;
}

/* -------------------- 代码块样式 -------------------- */

pre {
  background-color: #f8f9fa;
  border-radius: 6px;
  padding: 1rem;
  border: 1px solid #e9ecef;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.5;
}

code {
  background-color: #f8f9fa;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
}

pre code {
  background-color: transparent;
  padding: 0;
}

/* 代码折叠按钮 */
.code-fold-button {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.code-fold-button:hover {
  background-color: #e9ecef;
}

/* -------------------- 图片样式 -------------------- */

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

figure {
  margin: 1.5rem 0;
  text-align: center;
}

figure figcaption {
  font-size: 0.9rem;
  color: #6c757d;
  margin-top: 0.5rem;
  font-style: italic;
}

/* 首页封面图 */
.cover-wrap {
  display: flex;
  justify-content: center;
  margin: 1.2rem 0 0.4rem 0;
}

.cover-wrap img {
  max-width: 820px;
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.16);
}

.cover-caption {
  text-align: center;
  color: #6c757d;
  font-size: 0.92rem;
  margin-bottom: 1.5rem;
}

/* -------------------- Callout样式 -------------------- */

.callout {
  border-radius: 8px;
  margin: 1.25rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid;
}

.callout-tip {
  border-left-color: #28a745;
  background-color: #f8fff8;
}

.callout-note {
  border-left-color: #17a2b8;
  background-color: #f8fcff;
}

.callout-warning {
  border-left-color: #ffc107;
  background-color: #fffef8;
}

.callout-important {
  border-left-color: #dc3545;
  background-color: #fff8f8;
}

.callout-header {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* -------------------- 引用样式 -------------------- */

blockquote {
  border-left: 4px solid #3498db;
  padding: 0.5rem 1.25rem;
  margin: 1.25rem 0;
  color: #6c757d;
  background-color: #f8f9fa;
  border-radius: 0 6px 6px 0;
}

blockquote p {
  margin-bottom: 0;
}

/* -------------------- 列表样式 -------------------- */

ul, ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

li {
  margin: 0.5rem 0;
  line-height: 1.6;
}

/* -------------------- 页脚样式 -------------------- */

.page-footer {
  background-color: #f8f9fa;
  padding: 1.5rem;
  border-top: 1px solid #dee2e6;
  font-size: 0.9rem;
  margin-top: 2rem;
}

/* -------------------- 数学公式样式 -------------------- */

.math {
  font-size: 1.05em;
}

/* -------------------- 打印样式 -------------------- */

@media print {
  #quarto-sidebar {
    display: none;
  }

  #quarto-content {
    width: 100%;
    padding: 0;
  }

  .callout {
    border: 1px solid #dee2e6;
  }
}

/* -------------------- 深色模式适配 -------------------- */

[data-mode="dark"] {
  --bs-body-bg: #1a1a2e;
  --bs-body-color: #eee;
}

[data-mode="dark"] .sidebar-item-text:hover {
  background-color: #2a2a3e;
}

[data-mode="dark"] table thead th {
  background-color: #3a3a5e;
}

[data-mode="dark"] pre {
  background-color: #2a2a3e;
  border-color: #3a3a5e;
}

/* -------------------- 响应式适配 -------------------- */

@media (max-width: 991.98px) {
  #quarto-sidebar {
    padding: 1rem;
  }

  .sidebar-title {
    font-size: 1.2rem;
  }

  #quarto-content {
    padding: 1rem;
  }
}