.header {
    background-color: #113768;
    height: 130px;
    width: 100%;
    padding-top: 30px;
    padding-left: 30px;
    padding-right: 30px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .profile {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
  }
  
  .profileImg {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
  }
  
  .text {
    font-size: 24px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: #fff;
  }
  
  .iconButton {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s;
  }
  
  .iconButton:hover {
    opacity: 0.8;
  }
  
  .iconButton.disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .examHeader {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    align-items: center;
  }
  
  .timer {
    width: 167px;
    height: 55px;
    background-color: #fff;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    border-radius: 10px;
    padding: 0 10px;
  }
  
  .timeUnit {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .timeValue {
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    font-size: 20px;
    color: #082E5E;
  }
  
  .timeLabel {
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    font-size: 14px;
    color: #082E5E;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .header {
      height: 100px;
      padding-top: 20px;
      padding-left: 20px;
      padding-right: 20px;
    }
    
    .text {
      font-size: 15px;
    }
    
    .profile {
      gap: 15px;
    }
    
    .profileImg {
      width: 35px;
      height: 35px;
    }
    
    .timer {
      width: 140px;
      height: 45px;
    }
    
    .timeValue {
      font-size: 16px;
    }
    
    .timeLabel {
      font-size: 12px;
    }
  }
  
  @media (max-width: 480px) {
    .header {
      height: 80px;
      padding-top: 15px;
      padding-left: 15px;
      padding-right: 15px;
    }
    
    .text {
      font-size: 14px;
    }
    
    .profile {
      gap: 10px;
    }
    
    .profileImg {
      width: 30px;
      height: 30px;
    }
    
    .timer {
      width: 120px;
      height: 40px;
      padding: 0 5px;
    }
    
    .timeValue {
      font-size: 14px;
    }
    
    .timeLabel {
      font-size: 10px;
    }
    
    .examHeader {
      gap: 10px;
    }
  }
  
  /* Safe area considerations for mobile */
  @media (max-width: 480px) {
    .header {
      padding-top: max(15px, env(safe-area-inset-top));
    }
  }