/* ============================================================
   YERVIEW — animation.css
   Keyframes + scroll-reveal system (Intersection Observer)
   ============================================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes heroUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes dotFill {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* ---------- Fade-up on scroll ----------
   Elements with [data-reveal] start hidden and are revealed
   by IntersectionObserver in app.js (adds .revealed).       */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}

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

/* Stagger children inside a revealed group */
[data-reveal-group] > * {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal-group].revealed > * {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-group].revealed > *:nth-child(1) { transition-delay: 0.05s; }
[data-reveal-group].revealed > *:nth-child(2) { transition-delay: 0.12s; }
[data-reveal-group].revealed > *:nth-child(3) { transition-delay: 0.19s; }
[data-reveal-group].revealed > *:nth-child(4) { transition-delay: 0.26s; }
[data-reveal-group].revealed > *:nth-child(5) { transition-delay: 0.33s; }
[data-reveal-group].revealed > *:nth-child(6) { transition-delay: 0.4s; }
[data-reveal-group].revealed > *:nth-child(7) { transition-delay: 0.47s; }
[data-reveal-group].revealed > *:nth-child(8) { transition-delay: 0.54s; }

/* No-JS / reduced-motion safety */
.no-js [data-reveal],
.no-js [data-reveal-group] > * {
  opacity: 1;
  transform: none;
}