/* ==========================================================================
   Animaciones · solo transform/opacity · respeta prefers-reduced-motion
   ========================================================================== */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(18px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}
@keyframes draw {
  to { stroke-dashoffset: 0; }
}
@keyframes lensIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: none; }
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
@keyframes spinSlow {
  to { transform: rotate(360deg); }
}

/* Revelado al hacer scroll (activado por JS: html.js) */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--t-reveal) var(--ease-out), transform var(--t-reveal) var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms);
}
.js [data-reveal="fade"] { transform: none; }
.js [data-reveal="left"] { transform: translateX(-24px); }
.js [data-reveal="right"] { transform: translateX(24px); }
.js [data-reveal="scale"] { transform: scale(0.96); }
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* Trazos de construcción que se dibujan */
.js .draw { stroke-dasharray: var(--len, 1200); stroke-dashoffset: var(--len, 1200); }
.js .is-in .draw,
.js .draw.is-in { animation: draw 1.8s var(--ease-in-out) forwards; animation-delay: calc(var(--d, 0) * 1ms); }

.float { animation: floatY 6s var(--ease-in-out) infinite; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; }
  .js .draw { stroke-dashoffset: 0; }
  .float { animation: none; }
}