/* MOT-2 — Slide directionnel adapte (translateY mobile par garde-fou PIEGE PROD #13)
   On garde l'esprit "slide alterne" sur desktop ; mobile reste en translateY uniquement
   pour eviter le scroll horizontal latent. */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}

/* Slide alterne uniquement >= 768px */
@media (min-width: 768px) {
  [data-reveal]:not(.stagger) { transform: translateX(-28px); }
  [data-reveal]:not(.stagger):nth-child(even) { transform: translateX(28px); }
  [data-reveal].in { transform: none; }
}

/* STAGGER (cards en cascade) */
.stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
  will-change: opacity, transform;
}
.stagger.in > * { opacity: 1; transform: none; }
.stagger.in > *:nth-child(1) { transition-delay: .05s; }
.stagger.in > *:nth-child(2) { transition-delay: .12s; }
.stagger.in > *:nth-child(3) { transition-delay: .19s; }
.stagger.in > *:nth-child(4) { transition-delay: .26s; }
.stagger.in > *:nth-child(5) { transition-delay: .33s; }
.stagger.in > *:nth-child(6) { transition-delay: .40s; }
.stagger.in > *:nth-child(7) { transition-delay: .47s; }
.stagger.in > *:nth-child(8) { transition-delay: .54s; }

/* reduced-motion : tout couper, filet de securite anti galerie invisible */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}