/**
 * TIITII NBA — Animations CSS
 * Parallax, reveals au scroll, transitions de sections
 */

/* ── Reveal au scroll (IntersectionObserver) ────────────────────────────────── */

.reveal {
  opacity: 0;
  will-change: opacity, transform;
  transition:
    opacity  0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.revealed {
  opacity: 1;
  transform: none !important;
}

/* Variantes d'entrée */
.reveal-fade-up    { transform: translateY(40px); }
.reveal-fade-down  { transform: translateY(-40px); }
.reveal-fade-left  { transform: translateX(40px); }
.reveal-fade-right { transform: translateX(-40px); }
.reveal-scale      { transform: scale(0.92); }
.reveal-fade       { transform: none; }

/* Délais prédéfinis pour les grilles (enfants décalés) */
.reveal-stagger > *:nth-child(1)  { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2)  { transition-delay: 80ms; }
.reveal-stagger > *:nth-child(3)  { transition-delay: 160ms; }
.reveal-stagger > *:nth-child(4)  { transition-delay: 240ms; }
.reveal-stagger > *:nth-child(5)  { transition-delay: 320ms; }
.reveal-stagger > *:nth-child(6)  { transition-delay: 400ms; }
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity  0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.revealed.reveal-stagger > *,
.reveal-stagger.revealed > * {
  opacity: 1;
  transform: none;
}

/* ── Parallax ────────────────────────────────────────────────────────────────── */

.parallax-layer {
  will-change: transform;
  backface-visibility: hidden;
}

/* Hero background parallax — la couche image scroll plus lentement */
.hero-bg-parallax {
  position: absolute;
  inset: -15%;          /* Déborde pour éviter les bords vides pendant le scroll */
  background-size: cover;
  background-position: center;
  will-change: transform;
  backface-visibility: hidden;
}

/* Éléments décoratifs avec parallax léger */
.parallax-slow   { will-change: transform; backface-visibility: hidden; }
.parallax-medium { will-change: transform; backface-visibility: hidden; }

/* ── Transitions section reorder (FLIP) ─────────────────────────────────────── */

[data-section-id] {
  transition: opacity 0.2s ease;
}

[data-section-id].section-entering {
  animation: sectionEnter 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes sectionEnter {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Animations d'entrée de page ─────────────────────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

/* ── Bandeau release animé ───────────────────────────────────────────────────── */

#release-banner {
  animation: bannerSlide 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes bannerSlide {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* ── Streaming strip ─────────────────────────────────────────────────────────── */

@keyframes streamScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── Reduced motion — respecter les préférences utilisateur ──────────────────── */

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-stagger > *,
  .parallax-layer,
  .hero-bg-parallax,
  .parallax-slow,
  .parallax-medium,
  [data-section-id] {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}