/* ============================================
   DaoEdu 古籍阅读样式 - guji.css
   竖排/繁体/仿古/小说式阅读体验
   ============================================ */

/* ========== 古籍阅读页面布局 ========== */
.guji-reader {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 古籍阅读工具栏 */
.guji-toolbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--bg-blackboard-light);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-2) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.guji-toolbar-left,
.guji-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.guji-book-title {
  font-size: var(--text-sm);
  color: var(--chalk-yellow);
  font-weight: 600;
  margin-right: var(--space-2);
}

.guji-chapter-title {
  font-size: var(--text-sm);
  color: var(--chalk-white-dim);
}

.guji-toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--chalk-white-dim);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.guji-toolbar-btn:hover {
  background: var(--bg-card-hover);
  color: var(--chalk-yellow);
  border-color: var(--border-yellow);
}

.guji-toolbar-btn.active {
  background: rgba(245, 215, 110, 0.1);
  color: var(--chalk-yellow);
  border-color: var(--border-yellow);
}

/* ========== 古籍内容区 ========== */
.guji-content-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
}

.guji-content {
  max-width: var(--guji-max);
  width: 100%;
  font-family: var(--font-guji);
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
  color: var(--chalk-white);
}

/* 章节标题 */
.guji-chapter-header {
  text-align: center;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-yellow);
}

.guji-chapter-name {
  font-size: var(--text-2xl);
  color: var(--chalk-yellow);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: 0.1em;
}

.guji-chapter-subtitle {
  font-size: var(--text-sm);
  color: var(--chalk-gray);
}

/* 古籍正文段落 */
.guji-text p {
  margin-bottom: var(--space-5);
  text-indent: 2em;
  text-align: justify;
  line-height: var(--leading-loose);
}

.guji-text p:last-child {
  margin-bottom: 0;
}

/* 生僻字注音 */
.guji-text ruby {
  ruby-position: over;
}

.guji-text rt {
  font-size: 0.6em;
  color: var(--chalk-gray);
  font-family: var(--font-sans);
}

/* 原文标注 */
.guji-text .annotation {
  color: var(--chalk-blue);
  font-size: 0.85em;
  cursor: help;
  border-bottom: 1px dashed var(--chalk-blue);
}

/* 重点标注 */
.guji-text .emphasis {
  color: var(--chalk-yellow);
  font-weight: 600;
}

/* ========== 竖排模式 ========== */
.guji-reader.vertical .guji-content-wrapper {
  padding: var(--space-4);
  overflow-x: auto;
}

.guji-reader.vertical .guji-content {
  max-width: none;
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  text-orientation: mixed;
  height: calc(100vh - 180px);
  max-height: calc(100vh - 180px);
  overflow-x: auto;
  overflow-y: hidden;
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  line-height: 2.2;
}

.guji-reader.vertical .guji-chapter-header {
  writing-mode: vertical-rl;
  border-bottom: none;
  border-left: 1px solid var(--border-yellow);
  margin-bottom: 0;
  margin-right: var(--space-6);
  padding-bottom: 0;
  padding-right: var(--space-6);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.guji-reader.vertical .guji-chapter-name {
  writing-mode: vertical-rl;
  letter-spacing: 0.3em;
  margin-bottom: 0;
  margin-right: var(--space-4);
}

.guji-reader.vertical .guji-text p {
  text-indent: 0;
  margin-bottom: 0;
  margin-right: var(--space-6);
  line-height: 2.2;
}

/* ========== 繁体模式 ========== */
.guji-reader.traditional .guji-content {
  font-family: "PMingLiU", "MingLiU", "细明体", "新细明体", var(--font-guji);
}

/* ========== 羊皮纸主题 ========== */
.guji-reader.parchment {
  background: #f5efe0;
}

.guji-reader.parchment .guji-toolbar {
  background: #ede5d0;
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

.guji-reader.parchment .guji-book-title {
  color: #8b6914;
}

.guji-reader.parchment .guji-chapter-title {
  color: #5a5550;
}

.guji-reader.parchment .guji-toolbar-btn {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.1);
  color: #5a5550;
}

.guji-reader.parchment .guji-toolbar-btn:hover {
  background: rgba(0, 0, 0, 0.06);
  color: #8b6914;
  border-color: rgba(139, 105, 20, 0.3);
}

.guji-reader.parchment .guji-content {
  color: #3a3530;
}

.guji-reader.parchment .guji-chapter-name {
  color: #8b6914;
}

.guji-reader.parchment .guji-chapter-header {
  border-bottom-color: rgba(139, 105, 20, 0.2);
}

.guji-reader.parchment .guji-text .annotation {
  color: #1565c0;
  border-bottom-color: #1565c0;
}

.guji-reader.parchment .guji-text .emphasis {
  color: #8b6914;
}

.guji-reader.parchment .guji-nav {
  background: #ede5d0;
  border-top-color: rgba(0, 0, 0, 0.1);
}

.guji-reader.parchment .guji-nav a {
  color: #8b6914;
  border-color: rgba(139, 105, 20, 0.3);
}

.guji-reader.parchment .guji-nav a:hover {
  background: rgba(139, 105, 20, 0.1);
}

.guji-reader.parchment .guji-catalog {
  background: #ede5d0;
  border-right-color: rgba(0, 0, 0, 0.1);
}

.guji-reader.parchment .guji-catalog-title {
  color: #8b6914;
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

.guji-reader.parchment .guji-catalog-list a {
  color: #5a5550;
}

.guji-reader.parchment .guji-catalog-list a:hover,
.guji-reader.parchment .guji-catalog-list a.active {
  color: #8b6914;
  background: rgba(139, 105, 20, 0.08);
}

/* ========== 古籍目录侧边栏 ========== */
.guji-catalog {
  position: fixed;
  top: 0;
  left: -320px;
  width: 320px;
  height: 100vh;
  background: var(--bg-blackboard-light);
  border-right: 1px solid var(--border-light);
  z-index: var(--z-modal);
  transition: left var(--transition-normal);
  overflow-y: auto;
  padding: var(--space-6) var(--space-4);
}

.guji-catalog.open {
  left: 0;
}

.guji-catalog-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.guji-catalog-overlay.open {
  opacity: 1;
  visibility: visible;
}

.guji-catalog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-light);
}

.guji-catalog-title {
  font-size: var(--text-lg);
  color: var(--chalk-yellow);
  font-weight: 600;
}

.guji-catalog-close {
  background: none;
  border: none;
  color: var(--chalk-gray);
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--space-1);
  transition: color var(--transition-fast);
}

.guji-catalog-close:hover {
  color: var(--chalk-yellow);
}

.guji-catalog-volume {
  font-size: var(--text-sm);
  color: var(--chalk-purple);
  font-weight: 600;
  margin: var(--space-4) 0 var(--space-2);
  padding-left: var(--space-2);
  border-left: 3px solid var(--chalk-purple);
}

.guji-catalog-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.guji-catalog-list li {
  margin: 0;
}

.guji-catalog-list a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--chalk-white-dim);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  line-height: 1.5;
}

.guji-catalog-list a:hover,
.guji-catalog-list a.active {
  color: var(--chalk-yellow);
  background: var(--bg-card-hover);
}

/* ========== 古籍上下篇导航 ========== */
.guji-nav {
  position: sticky;
  bottom: 0;
  background: var(--bg-blackboard-light);
  border-top: 1px solid var(--border-light);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.guji-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border-yellow);
  border-radius: var(--radius-md);
  color: var(--chalk-yellow);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.guji-nav a:hover {
  background: rgba(245, 215, 110, 0.1);
}

.guji-nav a.disabled {
  opacity: 0.3;
  pointer-events: none;
  border-color: var(--border-light);
  color: var(--chalk-gray);
}

.guji-nav-center {
  font-size: var(--text-sm);
  color: var(--chalk-gray);
  text-align: center;
}

/* ========== 古籍设置面板 ========== */
.guji-settings {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: var(--bg-blackboard-light);
  border-left: 1px solid var(--border-light);
  z-index: var(--z-modal);
  transition: right var(--transition-normal);
  overflow-y: auto;
  padding: var(--space-6) var(--space-4);
}

.guji-settings.open {
  right: 0;
}

.guji-settings-group {
  margin-bottom: var(--space-6);
}

.guji-settings-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--chalk-yellow);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.guji-settings-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.guji-settings-row label {
  font-size: var(--text-sm);
  color: var(--chalk-white-dim);
  flex: 1;
}

.guji-settings-row input[type="range"] {
  flex: 2;
  accent-color: var(--chalk-yellow);
}

.guji-settings-row .value-display {
  font-size: var(--text-xs);
  color: var(--chalk-gray);
  min-width: 40px;
  text-align: right;
}

.guji-settings-buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.guji-settings-buttons button {
  flex: 1;
  min-width: 80px;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--chalk-white-dim);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.guji-settings-buttons button:hover,
.guji-settings-buttons button.active {
  background: rgba(245, 215, 110, 0.1);
  color: var(--chalk-yellow);
  border-color: var(--border-yellow);
}

/* ========== 古籍书首页 ========== */
.guji-book-home {
  max-width: var(--article-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.guji-book-header {
  text-align: center;
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 2px solid var(--border-yellow);
}

.guji-book-name {
  font-size: var(--text-4xl);
  color: var(--chalk-yellow);
  font-weight: 700;
  margin-bottom: var(--space-3);
  letter-spacing: 0.2em;
  font-family: var(--font-guji);
}

.guji-book-author {
  font-size: var(--text-base);
  color: var(--chalk-white-dim);
  margin-bottom: var(--space-4);
}

.guji-book-dynasty {
  display: inline-block;
  padding: 2px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-full);
  color: var(--chalk-purple);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.guji-book-source {
  font-size: var(--text-sm);
  color: var(--chalk-gray);
  font-style: italic;
}

.guji-book-desc {
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--chalk-white-dim);
}

.guji-book-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin: var(--space-6) 0;
  flex-wrap: wrap;
}

.guji-book-stat {
  text-align: center;
}

.guji-book-stat-number {
  font-size: var(--text-2xl);
  color: var(--chalk-yellow);
  font-weight: 700;
}

.guji-book-stat-label {
  font-size: var(--text-xs);
  color: var(--chalk-gray);
}

.guji-book-toc {
  margin-top: var(--space-8);
}

.guji-book-toc-title {
  font-size: var(--text-xl);
  color: var(--chalk-purple);
  font-weight: 600;
  margin-bottom: var(--space-4);
  padding-left: var(--space-3);
  border-left: 4px solid var(--chalk-purple);
}

.guji-book-volume {
  margin-bottom: var(--space-6);
}

.guji-book-volume-title {
  font-size: var(--text-base);
  color: var(--chalk-yellow);
  font-weight: 600;
  margin-bottom: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-fast);
}

.guji-book-volume-title:hover {
  background: var(--bg-card-hover);
}

.guji-book-volume-chapters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
}

.guji-book-volume-chapters a {
  display: block;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--chalk-white-dim);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.guji-book-volume-chapters a:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-yellow);
  color: var(--chalk-yellow);
}

.guji-book-volume-chapters a.read {
  border-color: var(--border-green);
  color: var(--chalk-green);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .guji-toolbar {
    padding: var(--space-2);
    gap: var(--space-2);
  }

  .guji-book-title,
  .guji-chapter-title {
    display: none;
  }

  .guji-content {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
  }

  .guji-reader.vertical .guji-content {
    font-size: var(--text-sm);
    height: calc(100vh - 160px);
    max-height: calc(100vh - 160px);
  }

  .guji-catalog,
  .guji-settings {
    width: 280px;
  }

  .guji-book-name {
    font-size: var(--text-3xl);
    letter-spacing: 0.1em;
  }

  .guji-book-stats {
    gap: var(--space-4);
  }

  .guji-book-volume-chapters {
    grid-template-columns: 1fr;
  }

  .guji-nav {
    padding: var(--space-2);
  }

  .guji-nav a {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }
}

/* ============================================
   五大类古籍书库样式 - 仿古书卡片
   ============================================ */

/* 书库页面容器 */
.guji-library {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

/* 五大类标签页 */
.guji-category-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--border-light);
  padding-bottom: var(--space-4);
}

.guji-category-tab {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-xl);
  font-family: var(--font-guji);
  color: var(--chalk-white-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  letter-spacing: 0.2em;
}

.guji-category-tab:hover {
  color: var(--chalk-yellow);
}

.guji-category-tab.active {
  color: var(--chalk-yellow);
}

.guji-category-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--chalk-yellow);
}

/* 二级分类标签 */
.guji-subcategory-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.guji-subcategory-tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-lg);
  font-family: var(--font-guji);
  color: var(--chalk-white-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.15em;
}

.guji-subcategory-tab:hover {
  color: var(--chalk-white);
}

.guji-subcategory-tab.active {
  color: var(--chalk-yellow);
  border-bottom: 1px solid var(--chalk-yellow);
}

/* 分类内容区 */
.guji-category-content {
  display: none;
}

.guji-category-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 仿古书卡片网格 */
.guji-book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

/* 仿古书卡片 */
.guji-book-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform 0.3s ease;
  text-decoration: none;
}

.guji-book-card:hover {
  transform: translateY(-5px);
}

/* 书封面 */
.guji-book-cover {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  transition: box-shadow 0.3s ease;
}

.guji-book-card:hover .guji-book-cover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}

/* 书脊线 */
.guji-book-cover::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(0,0,0,0.2);
}

/* 书脊装饰线 */
.guji-book-cover::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: rgba(255,255,255,0.1);
  box-shadow: 12px 0 0 rgba(255,255,255,0.05);
}

/* 书名标签 */
.guji-book-title-label {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-guji);
  font-size: var(--text-lg);
  letter-spacing: 0.3em;
  padding: var(--space-3) var(--space-2);
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  max-height: 80%;
  overflow: hidden;
  z-index: 1;
}

/* 山类 - 棕色封面 */
.guji-book-cover.shan {
  background: linear-gradient(135deg, #5c4033 0%, #3d2817 50%, #2a1a0f 100%);
}
.guji-book-cover.shan .guji-book-title-label {
  color: #3d2817;
  background: rgba(245, 230, 200, 0.9);
}

/* 医类 - 宣纸色封面 */
.guji-book-cover.yi {
  background: linear-gradient(135deg, #f5efe0 0%, #e8dcc8 50%, #d4c4a8 100%);
}
.guji-book-cover.yi .guji-book-title-label {
  color: #4a3728;
  background: rgba(255, 252, 245, 0.95);
}

/* 命类 - 深蓝色封面 */
.guji-book-cover.ming {
  background: linear-gradient(135deg, #2c3e6b 0%, #1a2744 50%, #0f1829 100%);
}
.guji-book-cover.ming .guji-book-title-label {
  color: #1a2744;
  background: rgba(230, 235, 250, 0.9);
}

/* 相类 - 墨绿色封面 */
.guji-book-cover.xiang {
  background: linear-gradient(135deg, #2d5a4a 0%, #1a3d30 50%, #0f2820 100%);
}
.guji-book-cover.xiang .guji-book-title-label {
  color: #1a3d30;
  background: rgba(220, 240, 230, 0.9);
}

/* 卜类 - 深紫色封面 */
.guji-book-cover.bu {
  background: linear-gradient(135deg, #4a2c5a 0%, #2f1a3d 50%, #1a0f24 100%);
}
.guji-book-cover.bu .guji-book-title-label {
  color: #2f1a3d;
  background: rgba(240, 230, 250, 0.9);
}

/* 书名（卡片下方） */
.guji-book-name {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--chalk-white);
  text-align: center;
  font-family: var(--font-guji);
  letter-spacing: 0.1em;
}

/* 分类标题 */
.guji-section-title {
  font-size: var(--text-2xl);
  font-family: var(--font-guji);
  color: var(--chalk-yellow);
  text-align: center;
  margin-bottom: var(--space-6);
  letter-spacing: 0.3em;
}

/* 响应式 */
@media (max-width: 768px) {
  .guji-category-tab {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-lg);
  }
  
  .guji-book-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-4);
  }
  
  .guji-book-title-label {
    font-size: var(--text-sm);
    letter-spacing: 0.2em;
  }
  
  .guji-book-name {
    font-size: var(--text-xs);
  }
}

@media (max-width: 480px) {
  .guji-book-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }
}

/* ============================================
   古籍书首页样式
   ============================================ */

.guji-book-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

.guji-book-header {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
  padding: var(--space-8);
  background: var(--bg-blackboard-light);
  border-radius: 12px;
  border: 1px solid var(--border-light);
}

.guji-book-cover-large {
  width: 200px;
  aspect-ratio: 3/4;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  flex-shrink: 0;
  background: linear-gradient(135deg, #5c4033 0%, #3d2817 50%, #2a1a0f 100%);
}

.guji-book-cover-large::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: rgba(0,0,0,0.3);
}

.guji-book-title-label-large {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-guji);
  font-size: var(--text-2xl);
  letter-spacing: 0.4em;
  padding: var(--space-4) var(--space-3);
  background: rgba(245, 230, 200, 0.9);
  color: #3d2817;
  border-radius: 4px;
  z-index: 1;
}

.guji-book-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.guji-book-title {
  font-size: var(--text-4xl);
  font-family: var(--font-guji);
  color: var(--chalk-yellow);
  margin-bottom: var(--space-3);
  letter-spacing: 0.2em;
}

.guji-book-author {
  font-size: var(--text-lg);
  color: var(--chalk-white);
  margin-bottom: var(--space-2);
}

.guji-book-source {
  font-size: var(--text-sm);
  color: var(--chalk-white-dim);
  margin-bottom: var(--space-2);
}

.guji-book-desc {
  font-size: var(--text-sm);
  color: var(--chalk-white-dim);
  margin-bottom: var(--space-6);
}

.guji-book-actions {
  display: flex;
  gap: var(--space-4);
}

.btn {
  padding: var(--space-3) var(--space-6);
  border-radius: 6px;
  font-size: var(--text-base);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--chalk-yellow);
  color: var(--bg-blackboard);
  border: none;
}

.btn-primary:hover {
  background: #e6c200;
  transform: translateY(-2px);
}

/* 古籍目录 */
.guji-book-catalog {
  background: var(--bg-blackboard-light);
  border-radius: 12px;
  padding: var(--space-8);
  border: 1px solid var(--border-light);
}

.guji-catalog-title {
  font-size: var(--text-2xl);
  font-family: var(--font-guji);
  color: var(--chalk-yellow);
  margin-bottom: var(--space-6);
  text-align: center;
  letter-spacing: 0.3em;
}

.guji-chapter-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}

.guji-chapter-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-blackboard);
  border-radius: 6px;
  border: 1px solid var(--border-light);
  text-decoration: none;
  transition: all 0.3s ease;
}

.guji-chapter-item:hover {
  border-color: var(--chalk-yellow);
  background: var(--bg-blackboard-light);
  transform: translateX(4px);
}

.guji-chapter-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--chalk-yellow);
  color: var(--bg-blackboard);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.guji-chapter-name {
  font-size: var(--text-sm);
  color: var(--chalk-white);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================
   古籍阅读页面样式
   ============================================ */

.guji-reader {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

.guji-reader-header {
  text-align: center;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-light);
}

.guji-reader-book-title {
  font-size: var(--text-xl);
  font-family: var(--font-guji);
  color: var(--chalk-yellow);
  margin-bottom: var(--space-2);
  letter-spacing: 0.2em;
}

.guji-reader-chapter-title {
  font-size: var(--text-3xl);
  font-family: var(--font-guji);
  color: var(--chalk-white);
  letter-spacing: 0.3em;
}

.guji-reader-content {
  font-family: var(--font-guji);
  font-size: var(--text-lg);
  line-height: 2.2;
  color: var(--chalk-white);
  text-align: justify;
  letter-spacing: 0.05em;
}

.guji-reader-content p {
  margin-bottom: var(--space-4);
  text-indent: 2em;
}

.guji-reader-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-light);
}

.guji-reader-nav a {
  padding: var(--space-3) var(--space-6);
  background: var(--bg-blackboard-light);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: var(--chalk-white);
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: var(--text-sm);
}

.guji-reader-nav a:hover {
  border-color: var(--chalk-yellow);
  color: var(--chalk-yellow);
}

.guji-reader-nav-center {
  color: var(--chalk-white-dim);
  font-size: var(--text-sm);
}

/* 响应式 */
@media (max-width: 768px) {
  .guji-book-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-6);
  }
  
  .guji-book-cover-large {
    width: 160px;
  }
  
  .guji-book-title {
    font-size: var(--text-3xl);
  }
  
  .guji-chapter-list {
    grid-template-columns: 1fr;
  }
  
  .guji-reader-content {
    font-size: var(--text-base);
    line-height: 2;
  }
}

/* ========== 古籍首页样式（补充） ========== */
.guji-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

.guji-header {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  margin-bottom: var(--space-6);
}

.guji-title {
  font-size: var(--text-3xl);
  color: var(--chalk-yellow);
  margin-bottom: var(--space-3);
  font-weight: bold;
}

.guji-subtitle {
  font-size: var(--text-base);
  color: var(--chalk-white-dim);
  margin-bottom: var(--space-6);
}

/* 二级分类标签页 */
.guji-subcategory-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.guji-subcategory-tab {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--chalk-white-dim);
  color: var(--chalk-white-dim);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: all 0.3s;
}

.guji-subcategory-tab:hover {
  border-color: var(--chalk-yellow);
  color: var(--chalk-yellow);
}

.guji-subcategory-tab.active {
  background: var(--chalk-yellow);
  color: var(--bg-blackboard);
  border-color: var(--chalk-yellow);
}

.guji-subcategory-content {
  display: none;
}

/* 古籍书籍卡片补充样式 */
.guji-book-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: all 0.3s;
}

.guji-book-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}

.guji-book-title-label {
  font-size: var(--text-base);
  color: var(--chalk-white);
  text-align: center;
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.2em;
  font-family: "KaiTi", "STKaiti", serif;
}

.guji-book-name {
  font-size: var(--text-sm);
  color: var(--chalk-white);
  text-align: center;
  margin-top: var(--space-1);
}

/* 五大类封面颜色 */
.guji-book-cover.shan {
  background: linear-gradient(135deg, #2d5a3d 0%, #1a3d2a 100%);
  border: 1px solid #4a8c6a;
}

.guji-book-cover.yi {
  background: linear-gradient(135deg, #8b4513 0%, #5c2e0a 100%);
  border: 1px solid #cd853f;
}

.guji-book-cover.ming {
  background: linear-gradient(135deg, #4a3a6b 0%, #2d2347 100%);
  border: 1px solid #7b6ba3;
}

.guji-book-cover.xiang {
  background: linear-gradient(135deg, #6b4a3a 0%, #472d23 100%);
  border: 1px solid #a37b6b;
}

.guji-book-cover.bu {
  background: linear-gradient(135deg, #3a5a6b 0%, #233d47 100%);
  border: 1px solid #6b8ba3;
}

/* 响应式 */
@media (max-width: 768px) {
  .guji-title {
    font-size: var(--text-2xl);
  }
  
  .guji-subtitle {
    font-size: var(--text-sm);
  }
  
  .guji-book-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }
}

@media (max-width: 480px) {
  .guji-book-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}