/**
 * 🌸 大程地理实验室 · 大程课堂 10 大教学步骤模块专项手账样式表
 */

/* 课堂页双栏布局 */
.lesson-page-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  max-width: 1360px;
  margin: 20px auto 60px;
  padding: 0 32px;
  align-items: start;
}

@media (max-width: 1024px) {
  .lesson-page-layout {
    grid-template-columns: 1fr;
  }
}

/* 左侧随动手账目录 */
.lesson-sidebar-toc {
  position: sticky;
  top: 76px;
  background: #FFFFFF;
  border: 1.5px solid var(--color-pink-border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  box-shadow: var(--shadow-soft);
}

.toc-header {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-title);
  padding: 0 8px 12px;
  border-bottom: 1.5px dashed var(--color-pink-border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-nav-list {
  list-style: none;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.toc-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-body);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.toc-item a:hover {
  background: var(--bg-card-subtle);
  color: var(--color-pink-deep);
}

.toc-item.active a {
  background: var(--bg-tag-pink);
  color: var(--color-pink-deep);
  font-weight: 700;
  border-left: 3px solid var(--color-pink-primary);
}

.toc-step-badge {
  font-size: 11px;
  font-weight: 700;
  background: #FFFFFF;
  padding: 1px 6px;
  border-radius: 6px;
  border: 1px solid var(--color-pink-border-subtle);
}

/* 右侧主课堂内容流 */
.lesson-main-stream {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* 课程顶部头卡 */
.lesson-hero-card {
  background: linear-gradient(135deg, #FFF5F7 0%, #FFFFFF 100%);
  border: 2px solid var(--color-pink-border);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  position: relative;
  box-shadow: var(--shadow-soft);
}

.hero-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.hero-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
}

.hero-id-strip {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-pink-border-subtle);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.id-badge {
  font-family: monospace;
  font-size: 12px;
  background: #FFFFFF;
  border: 1px solid var(--color-pink-border);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  color: var(--color-pink-deep);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 10大教学步骤手账通用卡片 */
.teaching-module-card {
  background: #FFFFFF;
  border: 1.5px solid var(--color-pink-border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 36px;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: border-color 0.2s ease;
}

.teaching-module-card:hover {
  border-color: var(--color-pink-border);
}

.module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1.5px dashed var(--color-pink-border-subtle);
}

.module-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.module-step-tag {
  background: var(--color-pink-primary);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.module-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
}

/* 01 情境导入样式 */
.situation-quote-box {
  background: #FFF9FA;
  border-left: 4px solid var(--color-pink-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  font-style: italic;
  color: var(--text-title);
  margin-bottom: 16px;
}

.situation-lead {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}

.situation-highlights-row {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.highlight-pill {
  background: #FFF0F4;
  color: var(--color-pink-deep);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-pink-border);
}

/* 02 核心知识清单 */
.concept-cards-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.concept-item-card {
  background: #FFFDFC;
  border: 1px solid #FCE4EC;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.concept-term {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-pink-deep);
  display: flex;
  align-items: center;
  gap: 8px;
}

.concept-definition {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

/* 03 原理探究 */
.inquiry-box {
  background: #FAFAFC;
  border: 1.5px dashed #E0D7DE;
  border-radius: var(--radius-md);
  padding: 20px;
}

.inquiry-topic-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 14px;
}

.inquiry-section {
  margin-bottom: 14px;
}

.inquiry-section-sub {
  font-weight: 600;
  color: var(--color-pink-deep);
  font-size: 14px;
  margin-bottom: 6px;
}

.inquiry-points-list {
  list-style: none;
  padding-left: 8px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}

/* 04 动态演示 & 05 思维图谱 & 06 数字地球 & 07 热点链接 交互卡 */
.interactive-bridge-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #FFF8FA 100%);
  border: 1.5px solid var(--color-pink-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.bridge-info {
  flex: 1;
}

.bridge-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bridge-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.btn-bridge-trigger {
  padding: 10px 22px;
  background: #FFFFFF;
  border: 1.5px solid var(--color-pink-primary);
  color: var(--color-pink-deep);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn-bridge-trigger:hover {
  background: var(--color-pink-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(255, 123, 144, 0.25);
  transform: translateY(-1px);
}

/* 08 高考链接题库占位卡 */
.gaokao-empty-notice-card {
  background: #FFFBFD;
  border: 2px dashed var(--color-pink-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.empty-cherry-icon {
  font-size: 32px;
}

.empty-notice-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-pink-deep);
}

.empty-notice-sub {
  font-size: 13px;
  color: var(--text-muted);
}

/* 09 课堂资料下载条 */
.resource-list-stream {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.resource-row-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #FFFDFD;
  border: 1px solid var(--color-pink-border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  transition: all 0.2s ease;
}

.resource-row-item:hover {
  border-color: var(--color-pink-border);
  background: #FFF9FA;
}

.res-type-badge {
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-tag-pink);
  color: var(--color-pink-deep);
  margin-right: 8px;
}

.res-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
}

.res-size {
  font-size: 12px;
  color: var(--text-muted);
}

/* 10 课堂小结胶囊 */
.summary-capsule-box {
  background: #FFF5F8;
  border: 1.5px solid var(--color-pink-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.summary-item-bullet {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

.summary-item-bullet:last-child {
  margin-bottom: 0;
}