/* zoom in from scale(1) → scale(1.1) over the slide interval */
@keyframes zoomInSlow {
  from { transform: scale(1); }
  to   { transform: scale(1.1); }
}

/* zoom out from scale(1.1) → scale(1) over the slide interval */
@keyframes zoomOutSlow {
  from { transform: scale(1.1); }
  to   { transform: scale(1); }
}

/* one of these will be applied per slide */
.zoom-in-slow {
  animation: zoomInSlow 6s ease-in-out forwards;
}
.zoom-out-slow {
  animation: zoomOutSlow 6s ease-in-out forwards;
}