/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  /* Body */
  body {
    font-family: Arial, sans-serif;
    background-color: #f3f4f6;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
  }
  
  /* Header */
  header {
    width: 100%;
    padding: 20px;
    background-color: #007bff;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  header h1 {
    font-size: 1.5em;
    font-weight: 600;
  }
  
  /* Login Button */
  .login-btn {
    padding: 10px 20px;
    font-size: 1em;
    background-color: #fff;
    color: #007bff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .login-btn:hover {
    background-color: #e0e0e0;
  }
  
  /* Navigation Menu */
  #dropdownMenu {
    width: 100%;
    background-color: #007bff;
    color: white;
    padding: 10px 0;
    display: flex;
    justify-content: center;
  }
  
  #dropdownMenu.hidden {
    display: none;
  }
  
  #doctorMenu, #patientMenu {
    display: none;
    flex-direction: column;
    align-items: center;
  }
  
  #doctorMenu a, #patientMenu a {
    color: white;
    text-decoration: none;
    padding: 10px;
    width: 100%;
    text-align: center;
    border-top: 1px solid #ccc;
  }
  
  #doctorMenu a:hover, #patientMenu a:hover {
    background-color: #0056b3;
  }
  
  /* Active Menu */
  #doctorMenu.active, #patientMenu.active {
    display: flex;
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    header {
      flex-direction: column;
    }
  
    .login-btn {
      margin-top: 10px;
    }
  }