/* ===== ANIMATIONS — hansvergara.com ===== */

/* ── Page load keyframes ── */
@keyframes hvFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes hvFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes hvSlideRight {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Page load classes ── */
.hv-anim-title   { animation: hvFadeUp     0.8s 0.05s ease both; }
.hv-anim-sub     { animation: hvFadeUp     0.8s 0.20s ease both; }
.hv-anim-body    { animation: hvFadeUp     0.8s 0.35s ease both; }
.hv-anim-fadein  { animation: hvFadeIn     0.9s 0.10s ease both; }
.hv-anim-slide   { animation: hvSlideRight 0.7s 0.10s ease both; }

/* ── Series page header ── */
.series-page-title { animation: hvFadeUp  0.7s 0.05s ease both; }
.series-page-desc  { animation: hvFadeUp  0.7s 0.18s ease both; }
.series-page-rule  { animation: hvFadeIn  0.7s 0.30s ease both; }

/* ── Scroll reveal (IntersectionObserver) ── */
.hv-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.hv-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.hv-reveal-delay-1 { transition-delay: 0.08s; }
.hv-reveal-delay-2 { transition-delay: 0.16s; }
.hv-reveal-delay-3 { transition-delay: 0.26s; }

/* ══════════════════════════════════════════════════════════════
   MASONRY ITEMS — apparition au scroll + image skeleton
   ══════════════════════════════════════════════════════════════

   État initial : invisible, légèrement décalé vers le bas.
   Quand l'item entre dans le viewport (IntersectionObserver),
   la classe .hv-item-visible est ajoutée → fade+slide in.
   Le délai est calculé dynamiquement par position dans la colonne.
*/
.masonry-item {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity   0.55s ease,
    transform 0.55s ease,
    box-shadow 0.3s ease;
  will-change: opacity, transform;
}

.masonry-item.hv-item-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hover lift — s'applique seulement une fois visible */
.masonry-item.hv-item-visible:hover {
  box-shadow: 0 8px 32px rgba(28,26,22,0.12);
}

/* ── Image skeleton (placeholder pendant le chargement) ── */
.masonry-item-img-wrap {
  background: var(--warm);
  position: relative;
}

/* Shimmer animé pendant le chargement de l'image */
@keyframes hvShimmer {
  0%   { background-position: -400px 0; }
  100% { background-position:  400px 0; }
}
.masonry-item-img-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    var(--warm) 0%,
    rgba(237,231,217,0) 40%,
    rgba(255,252,245,0.6) 50%,
    rgba(237,231,217,0) 60%,
    var(--warm) 100%
  );
  background-size: 800px 100%;
  animation: hvShimmer 1.6s infinite linear;
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
/* Masquer le shimmer une fois l'image chargée */
.masonry-item-img-wrap.img-loaded::before {
  opacity: 0;
}

/* L'image part invisible et apparaît une fois chargée */
.masonry-item-img-wrap img {
  transition: opacity 0.4s ease, transform 0.55s ease;
}
.masonry-item-img-wrap img.img-loading {
  opacity: 0;
}
.masonry-item-img-wrap img.img-loaded {
  opacity: 1;
}
/* Zoom au hover — seulement si visible */
.masonry-item.hv-item-visible:hover .masonry-item-img-wrap img {
  transform: scale(1.05);
}

/* ── Lightbox animation ── */
.lightbox-overlay.open              { animation: hvFadeIn 0.2s ease both; }
.lightbox-overlay.open .lightbox-inner { animation: hvFadeUp 0.3s 0.05s ease both; }

/* ── Nav hover ── */
.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

/* ── Button subtle pulse ── */
.btn, .btn-filled { position: relative; overflow: hidden; }
.btn::before, .btn-filled::before {
  content: ''; position: absolute; inset: 0;
  background: currentColor; opacity: 0; transition: opacity 0.2s;
}
.btn:hover::before { opacity: 0.06; }

/* ── Footer link underline ── */
.footer-col ul a { position: relative; display: inline-block; }
.footer-col ul a::after {
  content: ''; position: absolute;
  bottom: -1px; left: 0;
  width: 0; height: 1px;
  background: var(--accent); transition: width 0.22s ease;
}
.footer-col ul a:hover::after { width: 100%; }

/* ── Galerie index cards ── */
.series-card { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.series-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(28,26,22,0.1); }

/* ── Respect prefers-reduced-motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .masonry-item          { opacity: 1; transform: none; }
  .hv-reveal             { opacity: 1; transform: none; }
  .masonry-item-img-wrap::before { display: none; }
}