/* ═══════════════════════════════════════════════════
   Scroll Reveal — IntersectionObserver + CSS Transitions
   Portfolio v3 · 2026

   JS adds .is-visible when elements enter the viewport.
   CSS transitions handle the animation.
   ═══════════════════════════════════════════════════ */

/* ── Base: hidden state for scroll-reveal elements ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal="left"] {
  transform: translateX(28px);
}

[data-reveal="scale"] {
  transform: scale(0.92);
}

[data-reveal="fade"] {
  transform: none;
}

/* ── Visible: transition in ── */
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

[data-reveal="left"].is-visible,
[data-reveal="scale"].is-visible,
[data-reveal="fade"].is-visible {
  transform: none;
}

/* ── Stagger delays ── */
[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }
[data-reveal-delay="5"] { transition-delay: 0.5s; }

/* ═══ Reduced Motion: show everything immediately ═══ */
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}