/* =============================================
   FADE IN UP
   ============================================= */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children when parent has .stagger class */
.stagger .fade-in:nth-child(1) { transition-delay: 0s; }
.stagger .fade-in:nth-child(2) { transition-delay: 0.1s; }
.stagger .fade-in:nth-child(3) { transition-delay: 0.2s; }
.stagger .fade-in:nth-child(4) { transition-delay: 0.3s; }

/* =============================================
   FADE IN LEFT / RIGHT
   ============================================= */
.fade-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* =============================================
   TIMELINE ITEM REVEAL
   ============================================= */
.timeline__item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.timeline__item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   SCALE IN (for gallery items)
   ============================================= */
.scale-in {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in-left,
  .fade-in-right,
  .timeline__item,
  .scale-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}