/* ==========================================================================
   animations.css
   CSS keyframes and scroll-reveal helper classes. GSAP handles the
   choreographed/staggered animations (see assets/js/animations/*); these
   classes cover lightweight, always-on CSS motion (spinners, pulses,
   floating elements) and the base/target states reveal.js toggles.
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Scroll reveal base states (toggled by animations/reveal.js) ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- Preloader ---- */
@keyframes preloader-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.92); opacity: 0.7; }
}
.preloader__mark { animation: preloader-pulse 1.4s ease-in-out infinite; }

@keyframes preloader-bar {
  0% { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}

/* ---- Floating / drifting background elements ---- */
@keyframes float-slow {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -18px, 0); }
}
.float-slow { animation: float-slow 6s ease-in-out infinite; }

@keyframes sparkle-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- Scroll cue ---- */
@keyframes scroll-cue-move {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}

/* ---- Star / badge micro pulse ---- */
@keyframes soft-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 191, 92, 0.35); }
  50% { box-shadow: 0 0 0 10px rgba(47, 191, 92, 0); }
}
.pulse-accent { animation: soft-pulse 2.2s ease-out infinite; }

/* ---- Skeleton shimmer (for lazy-loading imagery) ---- */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.img-shimmer {
  background: linear-gradient(90deg, var(--color-border-soft) 25%, #f0f4f9 37%, var(--color-border-soft) 63%);
  background-size: 800px 100%;
  animation: shimmer 1.6s linear infinite;
}