body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f6ff;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 600px;
    margin: 30px auto;
    background: #ffffff;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    text-align: center;
  }
  
  h1, h2, h3 {
    margin-bottom: 15px;
  }
  
  .question {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
  }
  
  #animal-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .animal-img {
    width: 70px;
    height: 70px;
    object-fit: contain;
    border-radius: 8px;
    background-color: #eef4fb;
    padding: 5px;
  }
  
  #options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .option-btn {
    padding: 12px 18px;
    font-size: 18px;
    background-color: #e0efff;
    border: 2px solid #007bff;
    color: #007bff;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .option-btn:hover {
    background-color: #007bff;
    color: white;
    transform: scale(1.05);
  }
  
  #feedback {
    font-size: 18px;
    font-weight: 600;
    color: #444;
    margin-bottom: 20px;
  }
  
  #scoreboard {
    list-style-type: none;
    padding: 0;
    margin-top: 20px;
    text-align: left;
  }
  
  #scoreboard li {
    background: #f5faff;
    padding: 10px;
    margin: 5px 0;
    border-radius: 6px;
    font-size: 16px;
  }
  
  #certificate {
    margin-top: 40px;
    padding: 30px;
    border: 3px dashed #007bff;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.1);
    display: none; /* hidden by default */
  }
  
  #certificate h2 {
    color: #007bff;
    font-size: 24px;
    margin-bottom: 10px;
  }
  
  #cert-name {
    font-size: 22px;
    color: #333;
  }
  
  #cert-date {
    font-size: 16px;
    color: #666;
    margin-top: 10px;
  }
  
  button {
    padding: 12px 24px;
    font-size: 16px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    margin-top: 20px;
    cursor: pointer;
    transition: background 0.3s ease;
  }
  
  button:hover {
    background: #0056b3;
  }

  #scoreboard {
    list-style: none; /* removes bullets */
    padding: 0;
    margin-top: 20px;
    text-align: left;
  }
  
  #scoreboard li {
    background: #f5faff;
    padding: 10px 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    font-size: 16px;
    color: #333;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  }