/* Sistema de animaciones sutiles · vanilla, sin libs */

/* === Estados base === */
.zw-anim {
    opacity: 0;
    transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.zw-anim--in { opacity: 1; transform: none !important; }

/* === Variantes de entrada === */
.zw-anim[data-anim="fade"]       { /* solo opacity */ }
.zw-anim[data-anim="fade-up"]    { transform: translateY(24px); }
.zw-anim[data-anim="fade-down"]  { transform: translateY(-24px); }
.zw-anim[data-anim="fade-left"]  { transform: translateX(24px); }
.zw-anim[data-anim="fade-right"] { transform: translateX(-24px); }
.zw-anim[data-anim="zoom-in"]    { transform: scale(0.96); }
.zw-anim[data-anim="zoom-out"]   { transform: scale(1.04); }

/* === Reveal de texto carácter a carácter (titulares) === */
.zw-text-reveal {
    display: inline-block;
    overflow: hidden;
}
.zw-text-reveal__char {
    display: inline-block;
    transform: translateY(110%);
    transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: calc(var(--char-i, 0) * 25ms);
    will-change: transform;
}
.zw-text-reveal--in .zw-text-reveal__char { transform: translateY(0); }

/* === Stagger de hijos (cards, listas) === */
.zw-stagger > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 600ms ease, transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.zw-stagger.zw-stagger--in > * {
    opacity: 1;
    transform: none;
}
.zw-stagger.zw-stagger--in > *:nth-child(1)  { transition-delay: 0ms; }
.zw-stagger.zw-stagger--in > *:nth-child(2)  { transition-delay: 80ms; }
.zw-stagger.zw-stagger--in > *:nth-child(3)  { transition-delay: 160ms; }
.zw-stagger.zw-stagger--in > *:nth-child(4)  { transition-delay: 240ms; }
.zw-stagger.zw-stagger--in > *:nth-child(5)  { transition-delay: 320ms; }
.zw-stagger.zw-stagger--in > *:nth-child(6)  { transition-delay: 400ms; }
.zw-stagger.zw-stagger--in > *:nth-child(7)  { transition-delay: 480ms; }
.zw-stagger.zw-stagger--in > *:nth-child(8)  { transition-delay: 560ms; }
.zw-stagger.zw-stagger--in > *:nth-child(n+9) { transition-delay: 640ms; }

/* === Hover sutil reutilizable === */
.zw-hover-lift {
    transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 350ms ease;
}
.zw-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* === Underline animado en links === */
.zw-link-underline {
    position: relative;
    display: inline-block;
}
.zw-link-underline::after {
    content: "";
    position: absolute;
    left: 0; bottom: -2px;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
}
.zw-link-underline:hover::after {
    transform: scaleX(1);
    transform-origin: left center;
}

/* === Respeta prefers-reduced-motion === */
@media (prefers-reduced-motion: reduce) {
    .zw-anim, .zw-text-reveal__char, .zw-stagger > *, .zw-hover-lift, .zw-link-underline::after {
        transition: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
}