/* =========================================================
   VIP LUCK — Animations d'apparition
   ========================================================= */

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
    will-change: opacity, transform;
}
.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Décalage progressif pour les grilles */
.cards-grid .card.fade-in-up:nth-child(2) { transition-delay: 0.06s; }
.cards-grid .card.fade-in-up:nth-child(3) { transition-delay: 0.12s; }
.cards-grid .card.fade-in-up:nth-child(4) { transition-delay: 0.18s; }

.paliers .palier.fade-in-up:nth-child(2) { transition-delay: 0.06s; }
.paliers .palier.fade-in-up:nth-child(3) { transition-delay: 0.12s; }
.paliers .palier.fade-in-up:nth-child(4) { transition-delay: 0.18s; }

.pack-list li.fade-in-up:nth-child(2) { transition-delay: 0.06s; }
.pack-list li.fade-in-up:nth-child(3) { transition-delay: 0.12s; }
.pack-list li.fade-in-up:nth-child(4) { transition-delay: 0.18s; }

/* En-tête au défilement */
.site-header.is-scrolled {
    box-shadow: 0 4px 20px rgba(31, 46, 90, 0.08);
    background: rgba(245, 239, 228, 0.98);
}

/* Plaque d'accueil flottante (uniquement si mouvement autorisé) */
@media (prefers-reduced-motion: no-preference) {
    .pack-plaque {
        animation: vl-float 6s ease-in-out infinite;
    }
    @keyframes vl-float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-8px); }
    }
    .hero-card-inner:hover {
        transform: rotate(0deg) translateY(-6px);
    }
}

/* Respect des préférences d'accessibilité */
@media (prefers-reduced-motion: reduce) {
    .fade-in-up {
        opacity: 1;
        transform: none;
        transition: none;
    }
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}