.modal {
  display: none; /* solo se muestra con JS */
  position: fixed;
  z-index: 999;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.4);
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-sizing: border-box;
}

.modal-content {
  background-color: #fff;
  padding: 30px 20px;
  border-radius: 12px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.15);
  position: relative;
  animation: fadeIn 0.3s ease-in-out;
  box-sizing: border-box;
}

.close {
  position: absolute;
  right: 14px;
  top: 10px;
  font-size: 24px;
  color: #666;
  cursor: pointer;
}

@media (max-width: 600px) {
  .modal-content {
    width: 92vw;
    padding: 25px 15px;
    border-radius: 10px;
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal-content input {
    font-size: 1rem;
    padding: 12px 10px;
    width: 100%;
    margin-bottom: 10px;
    box-sizing: border-box;
  }

  .modal-content button {
    font-size: 1rem;
    padding: 12px;
    width: 100%;
    margin-top: 8px;
  }

  .modal-content h2 {
    font-size: 1.4rem;
    margin-bottom: 15px;
  }
}
window.mostrarMensaje = mostrarMensaje;