body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    transition: all 0.3s ease;
  }
  
  .hero {
    min-height: 100vh;
    background: url('https://images.unsplash.com/photo-1581092332040-7c4fcb8945a6') no-repeat center center/cover;
    padding: 60px 20px;
    color: white;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    transition: all 0.3s ease;
  }
  
  .dark-mode body {
    background-color: #111;
  }
  
  .dark-mode .hero {
    background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
    color: #ffffff;
    text-shadow: none;
  }
  
  .dark-mode .navbar {
    background-color: #222 !important;
  }
  
  select.form-select {
    font-size: 1.2rem;
  }
  
  .btn {
    font-weight: 600;
  }

  .list-group-item {
    font-size: 1.1rem;
    padding: 15px 20px;
    background-color: #ffffff;
    color: #222;
    transition: 0.3s ease;
    border: 1px solid #ddd;
    border-radius: 5px;
  }
  
  .list-group-item:hover {
    background-color: #e6f2ff;
    transform: scale(1.02);
  }
  
  body.dark-mode .list-group-item {
    background-color: #2c2c2c;
    color: #eee;
    border-color: #444;
  }
  
  body.dark-mode .list-group-item:hover {
    background-color: #3a3a3a;
  }

  .btn-teal {
    background-color: #00bcd4;
    color: #fff;
    border: none;
  }
  
  .btn-teal:hover {
    background-color: #0097a7;
  }
  
  .navbar {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  }
  
  .nav-link {
    color: #ffffff !important;
    transition: color 0.3s ease;
  }
  
  .nav-link:hover,
  .dropdown-item:hover {
    color: #ffca28 !important;
  }