/* === ESTILOS MODAL RESPONSIVO === */
#registroCuponModal .modal-content {
  background-color: #fff;
  color: #1e1e1e;
  border-radius: 15px;
  border: none;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  animation: fadeInUp 0.6s ease;
}

#registroCuponModal .modal-header {
  border-bottom: none;
  justify-content: center;
  padding-top: 2rem;
}

#registroCuponModal .modal-header img {
  max-width: 120px;
  height: auto;
  margin-bottom: 1rem;
}

#registroCuponModal .modal-title {
  font-weight: 700;
  font-size: 1.5rem;
  text-align: center;
  width: 100%;
}

#registroCuponModal .modal-body {
  padding: 2rem 1.5rem;
}

#registroCuponModal input {
  background-color: #f8f9fa;
  border: 1px solid #ced4da;
  border-radius: 8px;
  transition: all 0.3s ease;
}

#registroCuponModal input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 6px rgba(37,99,235,0.4);
  background-color: #fff;
}

#registroCuponModal .form-label {
  font-weight: 500;
}

#registroCuponModal button[type="submit"] {
  background-color: #2563eb;
  color: #fff;
  border-radius: 10px;
  font-weight: 600;
  transition: all 0.3s ease;
}

#registroCuponModal button[type="submit"]:hover {
  background-color: #1e40af;
  transform: translateY(-2px);
}

#registroCuponModal .alert-success {
  background-color: #e0f2ff;
  border: 1px solid #90cdf4;
  color: #1e3a8a;
  border-radius: 8px;
}

/* Animación */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px);}
  to { opacity: 1; transform: translateY(0);}
}

/* Responsividad */
@media (max-width: 576px) {
  #registroCuponModal .modal-dialog {
    margin: 1rem;
  }
}