.payment-container {
  --primary-color: #4361ee;
  --secondary-color: #3f37c9;
  --accent-color: #4895ef;
  --text-color: #2c2e2f;
  --card-background: rgba(255, 255, 255, 0.5);
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;

  max-width: 500px;
  margin: 0 auto;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  background-color: var(--card-background);
  margin-top: 20px;
}

.amount-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: 600;
  color: var(--text-color);
}

.amount-display p {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

#display-amount {
  font-size: 2rem;
  font-weight: bold;
  color: #2c2e2f;
}

/* Botón de PayPal */
#paypal-checkout-button {
  margin-top: 1.5rem;
}

.modal {
  display: flex;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.4);
  justify-content: center;
  align-items: center;
}

.modal-content {
  margin: auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
  max-width: 500px;
  border-radius: 8px;
  position: relative;
}

.modal-content .close {
  color: #000000;
  position: absolute;
  right: 10px;
  top: 5px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

.modal-content p {
  padding: 20px;
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c2e2f;
  text-align: center;
}

/* Estilos Responsivos */
@media (max-width: 768px) {
  .payment-container {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .payment-container {
    padding: 1rem;
  }
}