/* MOT-2 — Slide directionnel (adapté translateY pour respecter PIEGE PROD #13 anti-scroll-horizontal)
   On garde l'esprit "directionnel" via une alternance de translateY (haut/bas) sur les enfants pairs/impairs.
   AUCUN translateX au reveal — interdit (PIEGE PROD #13). */

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
[data-reveal]:nth-child(even) { transform: translateY(-14px); }
[data-reveal].in {
  opacity: 1;
  transform: none;
}

/* Stagger en cascade pour les listes/grilles */
.stagger > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s cubic-bezier(.2,.7,.2,1);
}
.stagger.in > * { opacity: 1; transform: none; }
.stagger.in > *:nth-child(1) { transition-delay: .04s; }
.stagger.in > *:nth-child(2) { transition-delay: .10s; }
.stagger.in > *:nth-child(3) { transition-delay: .16s; }
.stagger.in > *:nth-child(4) { transition-delay: .22s; }
.stagger.in > *:nth-child(5) { transition-delay: .28s; }
.stagger.in > *:nth-child(6) { transition-delay: .34s; }
.stagger.in > *:nth-child(7) { transition-delay: .40s; }
.stagger.in > *:nth-child(8) { transition-delay: .46s; }

/* Reduced motion : tout neutre */
@media (prefers-reduced-motion: reduce) {
  [data-reveal], .stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .gal-slide img, .gal-tile img { transition: none !important; }
}