/**
 * Iliade Digital — Animations
 * --------------------------------------------------------------------
 * Toutes les keyframes + classes utilitaires d'animation.
 * Le bloc final @media (prefers-reduced-motion) est OBLIGATOIRE.
 */

/* ══════════════════════════════════════════
   KEYFRAMES
   ══════════════════════════════════════════ */

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes shimmer-anim {
  from { background-position: -400% 0; }
  to   { background-position:  400% 0; }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: var(--shadow-glow); }
  50%      { box-shadow: var(--shadow-glow-lg); }
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
@keyframes scroll-x {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes draw-border {
  from { stroke-dashoffset: 1000; }
  to   { stroke-dashoffset: 0; }
}
@keyframes counter-pop {
  from { opacity: 0; transform: translateY(20px) scale(0.8); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  25%      { transform: rotate(15deg); }
  75%      { transform: rotate(-10deg); }
}

/* ══════════════════════════════════════════
   CLASSES UTILITAIRES
   ══════════════════════════════════════════ */

.animate-fade-in       { animation: fadeIn       var(--dur-base)   var(--ease-out)    both; }
.animate-fade-in-up    { animation: fadeInUp     var(--dur-slow)   var(--ease-smooth) both; }
.animate-fade-in-down  { animation: fadeInDown   var(--dur-slow)   var(--ease-smooth) both; }
.animate-fade-in-left  { animation: fadeInLeft   var(--dur-slow)   var(--ease-smooth) both; }
.animate-fade-in-right { animation: fadeInRight  var(--dur-slow)   var(--ease-smooth) both; }
.animate-scale-in      { animation: scaleIn      var(--dur-base)   var(--ease-spring) both; }
.animate-pulse-glow    { animation: pulse-glow   3s ease-in-out infinite; }
.animate-gradient      { background-size: 200% 200%; animation: gradient-shift 6s ease infinite; }
.animate-scroll-x      { animation: scroll-x linear infinite; }

/* ══════════════════════════════════════════
   SCROLL-TRIGGERED (IntersectionObserver)
   ══════════════════════════════════════════ */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--dur-slower) var(--ease-smooth),
              transform var(--dur-slower) var(--ease-smooth);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--dur-slower) var(--ease-smooth),
              transform var(--dur-slower) var(--ease-smooth);
}
.reveal-left.is-visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--dur-slower) var(--ease-smooth),
              transform var(--dur-slower) var(--ease-smooth);
}
.reveal-right.is-visible { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0;
  transform: scale(0.88);
  transition: opacity var(--dur-slower) var(--ease-smooth),
              transform var(--dur-slower) var(--ease-spring);
}
.reveal-scale.is-visible { opacity: 1; transform: scale(1); }

/* Stagger automatique jusqu'à 8 enfants */
.stagger-children > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-smooth),
              transform var(--dur-slow) var(--ease-smooth);
}
.stagger-children.is-visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay:   0ms; }
.stagger-children.is-visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay:  80ms; }
.stagger-children.is-visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 160ms; }
.stagger-children.is-visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 240ms; }
.stagger-children.is-visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 320ms; }
.stagger-children.is-visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 400ms; }
.stagger-children.is-visible > *:nth-child(7) { opacity: 1; transform: none; transition-delay: 480ms; }
.stagger-children.is-visible > *:nth-child(8) { opacity: 1; transform: none; transition-delay: 560ms; }
.stagger-children.is-visible > *:nth-child(n+9) { opacity: 1; transform: none; transition-delay: 640ms; }

/* Hover utilities */
.hover-lift { transition: transform var(--dur-base) var(--ease-out); }
.hover-lift:hover { transform: translateY(-4px); }
.hover-scale { transition: transform var(--dur-base) var(--ease-out); }
.hover-scale:hover { transform: scale(1.03); }

/* ══════════════════════════════════════════
   PREFERS-REDUCED-MOTION — OBLIGATOIRE
   ══════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .stagger-children > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .animate-fade-in,
  .animate-fade-in-up,
  .animate-fade-in-down,
  .animate-fade-in-left,
  .animate-fade-in-right,
  .animate-scale-in,
  .animate-pulse-glow,
  .animate-gradient,
  .animate-scroll-x {
    animation: none !important;
  }
  .hero__animated-word::after { animation: none !important; }
  .hero__eyebrow-dot         { animation: none !important; }
  .hero__scroll-line         { animation: none !important; }
}

/* Quand l'utilisateur a réduced-motion ET la classe est ajoutée par iliade-boot.js */
html.reduce-motion .reveal,
html.reduce-motion .reveal-left,
html.reduce-motion .reveal-right,
html.reduce-motion .reveal-scale,
html.reduce-motion .stagger-children > * {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}