body {
  margin: 0;
  padding: 0;
  background: #000;
  color: #0f0;
  font-family: monospace;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.consigna {
  background-color: #111;
  color: #0f0;
  padding: 1rem;
  font-family: monospace;
  border-bottom: 1px solid #0f0;
  transition: background-color 0.5s;
}

.consigna.flash {
  background-color: #0f0;
  color: #000;
}

.mensaje-nivel {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  color: #0f0;
  font-family: monospace;
  opacity: 0;
  pointer-events: none;
  animation: aparecer 2s ease-in-out;
}

@keyframes aparecer {
  0% { opacity: 0; transform: translate(-50%, -60%); }
  25% { opacity: 1; transform: translate(-50%, -50%); }
  75% { opacity: 1; transform: translate(-50%, -50%); }
  100% { opacity: 0; transform: translate(-50%, -40%); }
}

#terminal {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  white-space: pre-wrap;
}

.input-line {
  display: inline;
}