/* ============================================================
   BELU FRANCIA · animations.css · v20260629
   Animaciones CSS + helpers para GSAP
   ============================================================ */

/* ── HERO PARALLAX (sutil) ────────────────────────────────────── */
@media (hover: hover) {
  .hero-bg img {
    will-change: transform;
  }
}

/* ── CARD TILT ────────────────────────────────────────────────── */
/* Activado vía GSAP en main.js — estas son las propiedades base */
.tec-card,
.test-card,
.porque-card {
  transform-style: preserve-3d;
  will-change: transform;
}

/* ── HOVER SCALE IMGS ─────────────────────────────────────────── */
.serv-media,
.gal-item,
.sobre-img-main,
.atm-media,
.tec-img {
  overflow: hidden;
}

/* ── PULSO FAB ───────────────────────────────────────────────── */
@keyframes fabPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50%       { box-shadow: 0 4px 36px rgba(37,211,102,0.65); }
}
.fab {
  animation: fabPulse 3s ease-in-out infinite;
}
.fab:hover {
  animation: none;
  box-shadow: 0 8px 28px rgba(37,211,102,0.55);
}

/* ── LOADING SKELETON (para cuando se cargan imgs) ────────────── */
@keyframes shimmer {
  from { background-position: -400px 0; }
  to   { background-position:  400px 0; }
}
.img-skeleton {
  background: linear-gradient(90deg, var(--bg-2) 25%, var(--bg) 50%, var(--bg-2) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
}

/* ── UNDERLINE ANIMADO (para links) ─────────────────────────────── */
.link-anim {
  position: relative;
}
.link-anim::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s cubic-bezier(0.16,1,0.3,1);
}
.link-anim:hover::after { transform: scaleX(1); }

/* ── METODO STEP ENTER ────────────────────────────────────────── */
.metodo-steps .metodo-step {
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.metodo-steps .metodo-step:hover {
  transform: translateX(4px);
}

/* ── STAGGER UTILITY (GSAP usa esto como referencia) ─────────── */
/*
  Para stagger con GSAP:
  gsap.from('.tec-card', { y:40, opacity:0, duration:.7, stagger:.09 })
  
  Los delays en CSS son solo fallback si GSAP no carga:
*/
.stagger-item { opacity: 0; }
.stagger-item.in { opacity: 1; transition: opacity 0.5s, transform 0.5s; transform: none; }

/* ── PAGE TRANSITION (preparado para implementar) ─────────────── */
/*
  Si se implementa page transition más adelante:
  - Añadir clase .page-exit al body en beforeunload
  - Nueva página entra con clase .page-enter → .page-enter-done
*/
.page-exit-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: var(--ink);
  transform: translateY(100%);
  pointer-events: none;
}

/* ── GRAIN OVERLAY ────────────────────────────────────────────── */
/* Usado en hero + secciones oscuras para textura */
.grain-overlay {
  position: absolute; inset: 0;
  opacity: 0.035; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── REDUCED MOTION ─────────────────────────────────────────── */
/* Solo para efectos realmente intrusivos (loops rápidos, partículas) */
@media (prefers-reduced-motion: reduce) {
  .ticker-track { animation-duration: 120s; } /* más lento, no desactivado */
  .fab          { animation: none; }
  .hero-bg img  { transition: none; }
}
/* NO incluir aquí: hover tilt, fades, cursor, count-up, card hover */