.error {
      color: red;
      font-size: 14px;
    }
    body {
      background-color: #f8f9fa;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    header {
      background-color: #1a80b6;
      color: white;
      padding: 15px 0;
    }
    header img {
      max-height: 70px;
    }
    .form-section {
      background: #fff;
      padding: 25px;
      margin-bottom: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    h4, h5 {
      color: #1a80b6;
      margin-bottom: 15px;
    }
    .required::after {
      content: " *";
      color: red;
    }
    .form-control, .form-select {
      border-radius: 8px;
    }
    .btn-primary {
      background-color: #1a80b6;
      border-radius: 8px;
      font-weight: 600;
    }
     .form-section-title {
    font-size: 20px;
    font-weight: 600;
    color: #2c3e50;
    border-left: 5px solid #3498db;
    padding-left: 12px;
    margin: 30px 0 20px 0;
    letter-spacing: 0.5px;
  }
  .form-control {
    border-radius: 10px;
    padding: 10px;
    font-size: 14px;
  }
  label {
    font-weight: 500;
    margin-bottom: 6px;
  }
.payment-option {
    border: 2px solid #ddd;
    border-radius: 12px;
    padding: 15px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #fff;
}
.payment-option:hover {
    border-color: #2575fc;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}
.payment-option input[type="radio"] {
    display: none;
}
.payment-option img {
    width: 70px;
    margin: 10px auto;
}
.payment-option h6 {
    margin-top: 10px;
    font-weight: 600;
    color: #333;
}
.payment-option input[type="radio"]:checked + img {
    border: 2px solid #2575fc;
    border-radius: 8px;
    padding: 4px;
}
/* Responsive font scaling */
@media (max-width: 576px) {
  header h3 {
    font-size: 1.4rem; /* smaller on mobile */
  }
  header p {
    font-size: 0.85rem;
  }
}