/* ============================================================
   ANIMATION SYSTEM
   Driven by IntersectionObserver in assets/js/animations.js.
   Elements with [data-animate] get a class matching their value,
   then .is-visible is added when they enter the viewport.
   ============================================================ */

/* Base: all animatable elements start invisible */
[data-animate] {
  will-change: opacity, transform;
}

/* fade-up */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity  600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* fade-in */
.fade-in {
  opacity: 0;
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.is-visible {
  opacity: 1;
}

/* slide-in-left */
.slide-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition:
    opacity  600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-in-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* slide-in-right */
.slide-in-right {
  opacity: 0;
  transform: translateX(32px);
  transition:
    opacity  600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-in-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger: children get increasing delay via JS */
[data-animate-stagger] > * {
  transition-delay: var(--stagger-delay, 0ms);
}

/* ============================================================
   REDUCED MOTION — disable all animations
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .fade-up,
  .fade-in,
  .slide-in-left,
  .slide-in-right {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  [data-animate] {
    will-change: auto;
  }
}