body {
  background-image: url('https://media.giphy.com/media/3o7qE1YN7aBOFPRwKY/giphy.gif');  # Fondo matrix animado sorpresa
  background-size: cover;
}
.card {
  border: 2px solid #00ff00;  /* Verde matrix */
  box-shadow: 0 0 15px #00ff00;
  transition: transform 0.3s;
}
.card:hover {
  transform: scale(1.05);  /* Hover zoom sorpresa */
}
.widget {
  animation: pulse 2s infinite;  /* Pulso cyber */
}
@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.7; }
  100% { opacity: 1; }
}