body {
      background: linear-gradient(135deg, #e8f5e9, #fffde7);
      min-height: 100vh;
    }
    .auth-card {
      max-width: 480px;
      width: 100%;
      background: #ffffff;
      border-radius: 1rem;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      padding: 2rem;
    }
    .logo {
      max-height: 60px;
    }
    .form-control:focus {
      box-shadow: 0 0 0 0.2rem rgba(56, 142, 60, 0.25);
      border-color: #388e3c;
    }
    .btn-success {
      background-color: #388e3c;
      border-color: #388e3c;
    }
    .btn-success:hover {
      background-color: #2e7d32;
      border-color: #2e7d32;
    }