.curriculum_section {
    margin-top: 30px;
    padding: 20px 0;
    background: #f8f9fa;
    min-height: calc(100vh - 100px);
  }
  
  .lesson-sidebar {
    background: white;
    border-right: 1px solid #e0e0e0;
    padding: 20px;
    height: calc(100vh - 100px);
    position: sticky;
    top: 0;
  }
  
  .course-outline h3 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #D6CFAF;
  }
  
  .lesson-list {
    list-style: none;
    padding: 0;
  }
  
  .lesson-list li {
    padding: 15px;
    margin: 5px 0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
  }
  
  .lesson-list li:hover {
    background: #f0f0f0;
  }
  
  .lesson-list li.active {
    background: #D6CFAF;
    color: #000000;
  }
  
  .lesson-number {
    width: 24px;
    height: 24px;
    background: #D6CFAF;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    font-size: 14px;
  }
  
  .active .lesson-number {
    background: #000000;
    color: #D6CFAF;
  }
  
  .main-content {
    padding: 30px;
  }
  
  .video-container {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
  .video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    margin: 20px 0;
  }
  
  .video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 75%;
    height: 80%;
    border-radius: 8px;
  }
  
  .video-description {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
  }
  
  @media (max-width: 768px) {
    .lesson-sidebar {
      height: auto;
      position: relative;
      margin-top: 0;
    }
    
    .main-content {
      padding: 15px;
    }
  }

  .quiz-form {
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.quiz-question {
    margin-bottom: 20px;
}

.form-check {
    margin: 10px 0;
}

.btn-primary {
    background-color: #D6CFAF;
    border: none;
    padding: 10px 20px;
    color: #000000;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #000000;
    color: #D6CFAF;
}