/* ==========================================================================
   animations.css — keyframes + scroll reveal
   ========================================================================== */

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 700ms var(--ease-out),
    transform 700ms var(--ease-out);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal="fade"] {
  transform: none;
}

[data-reveal="scale"] {
  transform: scale(0.965);
}

[data-reveal="scale"].is-visible {
  transform: scale(1);
}

[data-reveal="left"] {
  transform: translateX(-26px);
}

[data-reveal="right"] {
  transform: translateX(26px);
}

[data-reveal="left"].is-visible,
[data-reveal="right"].is-visible {
  transform: translateX(0);
}

/* Staggered children */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 640ms var(--ease-out),
    transform 640ms var(--ease-out);
}

[data-stagger].is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

[data-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-stagger].is-visible > *:nth-child(2) { transition-delay: 90ms; }
[data-stagger].is-visible > *:nth-child(3) { transition-delay: 180ms; }
[data-stagger].is-visible > *:nth-child(4) { transition-delay: 270ms; }
[data-stagger].is-visible > *:nth-child(5) { transition-delay: 360ms; }
[data-stagger].is-visible > *:nth-child(6) { transition-delay: 450ms; }

/* Title slide reveal */
.reveal-mask {
  display: block;
  overflow: hidden;
}

.reveal-mask > span {
  display: block;
  transform: translateY(105%);
  transition: transform 820ms var(--ease-out);
}

.is-visible .reveal-mask > span,
.reveal-mask.is-visible > span {
  transform: translateY(0);
}

/* ---------- Keyframes ---------- */
@keyframes fade-in-soft {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateX(18px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes breathe {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

@keyframes grid-drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-11.11%, -11.11%, 0); }
}

@keyframes line-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes node-float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -2px, 0); }
}

@keyframes travel {
  from { motion-offset: 0%; offset-distance: 0%; }
  to { motion-offset: 100%; offset-distance: 100%; }
}

@keyframes dash-flow {
  to { stroke-dashoffset: -44; }
}

@keyframes draw {
  to { stroke-dashoffset: 0; }
}

@keyframes soft-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@keyframes scroll-trace {
  0% { transform: translateY(0); }
  100% { transform: translateY(300%); }
}

@keyframes nudge-y {
  0%, 100% { transform: rotate(90deg) translateX(0); }
  50% { transform: rotate(90deg) translateX(5px); }
}

@keyframes drift-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(24px, 18px, 0) scale(1.06); }
}

@keyframes drift-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-22px, -16px, 0) scale(1.08); }
}

@keyframes loader-sweep {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(280%); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  [data-stagger] > * {
    opacity: 1 !important;
    transform: none !important;
  }

  .reveal-mask > span {
    transform: none !important;
  }

  .checklist li,
  .nav-overlay__list li,
  .nav-overlay__footer {
    opacity: 1 !important;
    transform: none !important;
  }

  .ecosystem__grid,
  .ecosystem__glow,
  .cta-band__aura,
  .nav-overlay__glow,
  .scroll-hint__track::after,
  .os-link,
  .viz-pulse,
  .ba__arrow svg,
  .eco-traveller,
  .eco-node,
  .eco-path--green,
  .eco-path--pink {
    animation: none !important;
  }

  body::after {
    display: none;
  }

  .cursor-dot,
  .cursor-ring {
    display: none !important;
  }

  .nav-overlay {
    transition: none;
  }
}