/* ==========================================================================
   animations.css — Scroll Animations (Intersection Observer)
   ========================================================================== */

/* -----------------------------------------------------------------------
   Pattern de base : .reveal + .visible
   ----------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Délais en cascade pour les grilles */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }

/* Variantes de direction */
.reveal-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Fade seul (sans mouvement) */
.reveal-fade {
  opacity: 0;
  transition: opacity 0.7s ease;
}

.reveal-fade.visible {
  opacity: 1;
}

/* Scale subtle */
.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* -----------------------------------------------------------------------
   Délais utilitaires (à appliquer manuellement si besoin)
   ----------------------------------------------------------------------- */
.delay-100 { transition-delay: 0.1s !important; }
.delay-200 { transition-delay: 0.2s !important; }
.delay-300 { transition-delay: 0.3s !important; }
.delay-400 { transition-delay: 0.4s !important; }
.delay-500 { transition-delay: 0.5s !important; }

/* -----------------------------------------------------------------------
   Désactiver les animations si l'utilisateur préfère
   ----------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-fade,
  .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
}