.hidden { display: none !important; }
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-left-color: #007bff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Estilo para mensagens de erro/sucesso */
#payment-message.alert {
    padding: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

#payment-init-error {
    margin-top: 0.5rem;
    font-size: 0.875rem;
}