.signup-section {
    min-height: 100vh;
    background-color: #fff;
  }
  .brand-side {
    background: url("https://images.unsplash.com/photo-1618005182384-a83a8bd57fbe?q=80&w=1964&auto=format&fit=crop")
      center center no-repeat;
    background-size: cover;
    position: relative;
    min-height: 300px;
  }
  .brand-side::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
      135deg,
      rgba(13, 110, 253, 0.4),
      rgba(102, 16, 242, 0.4)
    );
  }
  .form-side {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 50px 30px;
  }
  .form-wrapper {
    width: 100%;
    max-width: 500px;
  }
  .input-group-text {
    background-color: #f8f9fa;
    border-right: none;
    color: #6c757d;
  }
  .form-control {
    background-color: #f8f9fa;
    border-left: none;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .form-control:focus {
    background-color: #fff;
    box-shadow: none;
    border-color: #dee2e6;
  }
  .input-group:focus-within {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border-radius: 0.375rem;
    transition: all 0.3s ease;
  }
  .btn-premium {
    background: linear-gradient(135deg, #0d6efd, #6610f2);
    border: none;
    font-weight: 600;
    letter-spacing: 0.5px;
  }
  .btn-premium:hover {
    background: linear-gradient(135deg, #0b5ed7, #520dc2);
    box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
  }

  /* Validation Styles */
  .form-control.is-invalid {
    border-color: #dc3545;
    background-image: none;
  }
  .form-control.is-valid {
    border-color: #198754;
    background-image: none;
  }
  .input-group.is-invalid-group {
    border: 1px solid #dc3545;
    border-radius: 0.375rem;
  }
  .invalid-feedback {
    font-size: 0.8em;
    margin-top: 5px;
  }