/* ============================================================
   animations.css — keyframes & scroll-reveal helpers.
   ============================================================ */

/* Reveal on scroll (driven by IntersectionObserver in navbar.js) */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
    transition-delay: var(--reveal-delay, 0s);
}
[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Gradient accent text */
.gradient-text {
    background: linear-gradient(120deg, var(--accent) 0%, #a78bfa 60%, var(--accent-hover) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* Animated underline link */
.link-underline {
    position: relative;
    color: var(--text);
}
.link-underline::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 100%;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur) var(--ease-out);
}
.link-underline:hover::after { transform: scaleX(1); }

/* Slow float (for hero orbs/decorations) */
@keyframes float-y {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.float { animation: float-y 6s var(--ease-in-out) infinite; }

/* Pulse glow */
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 var(--sky-glow); }
    50% { box-shadow: 0 0 0 12px transparent; }
}
.pulse { animation: pulse-glow 2.4s var(--ease-in-out) infinite; }

/* Shimmer (loading skeleton / promo) */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.shimmer {
    background: linear-gradient(90deg,
        var(--surface) 0%,
        var(--surface-hover) 50%,
        var(--surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.8s linear infinite;
}

/* Entrance fade-up (used on modals/sections without IO) */
@keyframes fade-up {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fade-up var(--dur-slow) var(--ease-out) both; }

/* Marquee for promo strip */
@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}
.marquee {
    display: flex;
    width: max-content;
    animation: marquee 22s linear infinite;
}
.marquee:hover { animation-play-state: paused; }