/* animations.css — CSS keyframes and scroll-triggered animation utilities.
 * Uses only CSS and IntersectionObserver — no animation libraries. */

/* ─── Keyframes ──────────────────────────────────────────────────────────── */

@keyframes heroFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ─── Animation utility classes ──────────────────────────────────────────── */

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }
.animate-delay-6 { animation-delay: 0.6s; }

/* Elements start hidden and are revealed by IntersectionObserver via JS. */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/*
 * Page fade-in on load.
 * Makes language switching feel smoother by fading
 * the new page in rather than cutting abruptly.
 */
@keyframes pageFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

body {
  animation: pageFadeIn 250ms ease forwards;
}