/* ==========================================================================
   ANIMATIONS — Scroll reveals, hover lifts, transitions
   Uniquement transform/opacity → 60fps garanti
   Respecte prefers-reduced-motion via :root (01-tokens.css)
   ========================================================================== */

/* --- Reveal au scroll (IntersectionObserver) ----------------------------- */
/* Conditionné à .js-reveal-ready ajouté par reveal.js — fallback visible si JS absent */

.js-reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--duration-slower) var(--ease-out-quart),
    transform var(--duration-slower) var(--ease-out-quart);
}

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

.js-reveal-ready [data-reveal="right"] {
  transform: translateX(28px);
}

.js-reveal-ready [data-reveal="scale"] {
  transform: scale(0.96) translateY(16px);
}

.js-reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Délais de décalage pour les grilles (stagger) */
[data-reveal-delay="1"] { transition-delay: 80ms; }
[data-reveal-delay="2"] { transition-delay: 160ms; }
[data-reveal-delay="3"] { transition-delay: 240ms; }
[data-reveal-delay="4"] { transition-delay: 320ms; }
[data-reveal-delay="5"] { transition-delay: 400ms; }
[data-reveal-delay="6"] { transition-delay: 480ms; }

/* --- Cartes : lift au survol -------------------------------------------- */

.emi-card-lift {
  transition:
    transform var(--transition-slow),
    box-shadow var(--transition-slow),
    border-color var(--transition-slow);
}

.emi-card-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

/* --- Lien flèche animée -------------------------------------------------- */

.emi-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-navy-700);
  text-decoration: none;
  transition: gap var(--transition-base), color var(--transition-base);
}

.emi-link-arrow::after {
  content: '→';
  transition: transform var(--transition-base);
}

.emi-link-arrow:hover {
  color: var(--clr-gold-700);
  gap: var(--space-3);
}

.emi-link-arrow:hover::after {
  transform: translateX(4px);
}

/* --- Barre de chargement hero (animation entrée) ------------------------- */

@keyframes emi-fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes emi-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes emi-slide-right {
  from { transform: scaleX(0); transform-origin: left; }
  to   { transform: scaleX(1); transform-origin: left; }
}

@keyframes emi-pulse-gold {
  0%, 100% { box-shadow: 0 0 0 0 rgba(31, 99, 196, 0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(31, 99, 196, 0); }
}

/* Séquence hero */
.emi-hero-animate > *:nth-child(1) { animation: emi-fade-up var(--duration-slower) var(--ease-out-quart) 0ms    both; }
.emi-hero-animate > *:nth-child(2) { animation: emi-fade-up var(--duration-slower) var(--ease-out-quart) 120ms  both; }
.emi-hero-animate > *:nth-child(3) { animation: emi-fade-up var(--duration-slower) var(--ease-out-quart) 240ms  both; }
.emi-hero-animate > *:nth-child(4) { animation: emi-fade-up var(--duration-slower) var(--ease-out-quart) 360ms  both; }
.emi-hero-animate > *:nth-child(5) { animation: emi-fade-up var(--duration-slower) var(--ease-out-quart) 480ms  both; }

/* Underline animé sur les liens de nav actifs */
.emi-nav-line {
  position: relative;
}

.emi-nav-line::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 28px;
  height: 3px;
  background: var(--clr-gold-700);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base);
  transform-origin: center;
}

.emi-nav-line:hover::after,
.current-menu-item > .emi-nav-line::after {
  transform: translateX(-50%) scaleX(1);
}