/**
 * ST landings — keyframes + scroll-reveal base classes.
 * Consumed by IntersectionObserver in js/st-landing.js (toggles .st-visible).
 */

@keyframes st-gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes st-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes st-pulse-glow {
    0%, 100% { box-shadow: 0 0 30px rgba(var(--st-primary-rgb), 0.3), 0 0 60px rgba(var(--st-primary-light-rgb), 0.15); }
    50% { box-shadow: 0 0 50px rgba(var(--st-primary-rgb), 0.5), 0 0 80px rgba(var(--st-primary-light-rgb), 0.25); }
}

@keyframes st-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

@keyframes st-marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes st-fade-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes st-orb-float-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-15px, 15px) scale(0.97); }
}

@keyframes st-orb-float-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-25px, 15px) scale(0.95); }
    66% { transform: translate(20px, -25px) scale(1.03); }
}

/* Scroll-triggered animation base */
.st-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.st-reveal.st-visible {
    opacity: 1;
    transform: translateY(0);
}

.st-reveal-delay-1 { transition-delay: 0.1s; }
.st-reveal-delay-2 { transition-delay: 0.2s; }
.st-reveal-delay-3 { transition-delay: 0.3s; }
.st-reveal-delay-4 { transition-delay: 0.4s; }