/* Allgemeine Stile */
body {
    background-color: #f8f9fa;
  }
  
  /* Card-Schatten verstärken */
  .card.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
  }
  
  /* Formular-Stile */
  .form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
  }
  
  /* Navbar-Stile */
  .navbar-dark .navbar-brand {
    font-weight: bold;
  }
  
  /* Footer-Stile */
  .card-footer {
    background-color: rgba(0, 0, 0, 0.03);
  }
  
  /* Responsive Anpassungen */
  @media (max-width: 576px) {
    .card-header h4 {
      font-size: 1.25rem;
    }
  }