/* ==========================================================================
   Animaciones (CSS + activación por scroll desde js/main.js)
   ========================================================================== */

/* Hero: entrada escalonada */
@keyframes cfFadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes cfLineGrow {
    from { transform: scaleX(0); }
    to   { transform: scaleX(1); }
}

.anim-hero {
    opacity: 0;
    animation: cfFadeUp 1s ease-out forwards;
    animation-delay: var(--d, 0s);
}

.anim-hero-line {
    transform: scaleX(0);
    animation: cfLineGrow 0.8s ease-out forwards;
    animation-delay: var(--d, 0s);
}

/* Revelado al hacer scroll (solo si JS está activo) */
.js .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.9s ease, transform 0.9s ease;
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
}

.js .reveal-left  { transform: translateX(-40px); }
.js .reveal-right { transform: translateX(40px); }

.js .reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Divisores que crecen al aparecer */
.js .reveal .divider-line {
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s ease 0.3s;
}

.js .reveal.is-visible .divider-line {
    transform: scaleX(1);
}

/* Accesibilidad: sin animaciones para quien las desactiva */
@media (prefers-reduced-motion: reduce) {
    .anim-hero,
    .anim-hero-line {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .js .reveal,
    .js .reveal .divider-line {
        opacity: 1;
        transform: none;
        transition: none;
    }
}