/* Petites animations transverses au site : apparition au défilement + interactions
   au survol. Chargé globalement (css_js/css.html) donc réutilisable sur n'importe
   quelle page en ajoutant simplement la classe `reveal`. */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
    will-change: opacity, transform;
}
.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: .05s; }
.reveal-delay-2 { transition-delay: .15s; }
.reveal-delay-3 { transition-delay: .25s; }
.reveal-delay-4 { transition-delay: .35s; }
.reveal-delay-5 { transition-delay: .45s; }
.reveal-delay-6 { transition-delay: .55s; }

/* Cartes cliquables : léger effet de survol (ne s'applique qu'aux cartes
   contenant un lien, pour ne pas "faire flotter" un simple formulaire). */
.card:has(a):hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 34px -18px rgba(0, 57, 79, 0.35);
}
.card:has(a) {
    transition: transform .25s ease, box-shadow .25s ease;
}

/* Petit soulignement animé sur les liens de la navigation. */
.navbar-nav .nav-link:not(.dropdown-toggle) {
    position: relative;
}
.navbar-nav .nav-link:not(.dropdown-toggle)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 0;
    height: 2px;
    background: var(--primary, #17a2b8);
    transition: width .2s ease;
}
.navbar-nav .nav-link:not(.dropdown-toggle):hover::after,
.navbar-nav .nav-link:not(.dropdown-toggle).active::after {
    width: 100%;
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .card:has(a):hover,
    .team:hover .position-relative {
        transform: none;
    }
}