.swal-game-error {
  color: #ff3b3b !important;

  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;

  /* contorno fake (stroke) */
  text-shadow:
    -2px -2px 0 #000,
     2px -2px 0 #000,
    -2px  2px 0 #000,
     2px  2px 0 #000,

    /* glow vermelho */
     0 0 6px rgba(255, 60, 60, 0.9),
     0 0 14px rgba(255, 40, 40, 0.8),
     0 0 28px rgba(200, 0, 0, 0.7);

  animation: errorPulse 0.9s infinite alternate;
}

/* animação de alerta */
@keyframes errorPulse {
  from {
    text-shadow:
      -2px -2px 0 #000,
       2px -2px 0 #000,
      -2px  2px 0 #000,
       2px  2px 0 #000,
       0 0 10px rgba(255, 60, 60, 0.6);
    transform: scale(1);
  }
  to {
    text-shadow:
      -2px -2px 0 #000,
       2px -2px 0 #000,
      -2px  2px 0 #000,
       2px  2px 0 #000,
       0 0 24px rgba(255, 0, 0, 1);
    transform: scale(1.05);
  }
}