/* -----------------------------------
   Chapter Content
----------------------------------- */
.chapter-title {
  margin-bottom: 10px;
}

.subtopic {
  margin-bottom: 20px;
  cursor: pointer;
}

.subtopic-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.subtopic h2,
.subtopic h3 {
  margin: 0;
  padding: 15px 0;
}

.subtopic-content {
  padding: 15px 0;
  display: none;
}

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

.subtopic-toggle {
  font-size: 2rem;
  cursor: pointer;
}

/* -----------------------------------
   Navigation
----------------------------------- */
.chapter-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  margin-bottom: 30px;
  padding-top: 20px;
  border-top: 1px solid #e9ecef;
}

.chapter-navigation a {
  color: #094e7c;
  text-decoration: none;
  font-weight: 500;
}

.chapter-navigation a:hover {
  text-decoration: underline;
}