/* ─────────────────────────────────────────────
   SCROLL FADE-IN
───────────────────────────────────────────── */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for grid children */
.fade-in-up:nth-child(2) { transition-delay: .08s; }
.fade-in-up:nth-child(3) { transition-delay: .16s; }
.fade-in-up:nth-child(4) { transition-delay: .24s; }
.fade-in-up:nth-child(5) { transition-delay: .32s; }
.fade-in-up:nth-child(6) { transition-delay: .40s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ─────────────────────────────────────────────
   PARALLAX HERO
───────────────────────────────────────────── */
.parallax-hero {
  background-attachment: fixed;
  will-change: background-position;
}


/* ─────────────────────────────────────────────
   INITIAL FADE-IN — for hero/above-fold elements
   Uses pure CSS animation (no JS observer needed).
   Use this on elements that are ALWAYS visible on
   page load (hero, navbar elements, etc.).
   
   Stagger via nth-child like .fade-in-up.
───────────────────────────────────────────── */
@keyframes fadeInUpInitial {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up-initial {
  opacity: 0;
  animation: fadeInUpInitial 0.85s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.1s; /* small delay so page is mounted */
}

/* Stagger for children of same parent */
.fade-in-up-initial:nth-child(1) { animation-delay: 0.1s; }
.fade-in-up-initial:nth-child(2) { animation-delay: 0.25s; }
.fade-in-up-initial:nth-child(3) { animation-delay: 0.40s; }
.fade-in-up-initial:nth-child(4) { animation-delay: 0.55s; }
.fade-in-up-initial:nth-child(5) { animation-delay: 0.70s; }
.fade-in-up-initial:nth-child(6) { animation-delay: 0.85s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up-initial {
    opacity: 1;
    animation: none;
  }
}