/* ==========================================================================
   ANIMATIONS.CSS
   Keyframes y clases de revelado activadas por Intersection Observer (JS).
   Todas las transiciones son deliberadamente lentas y suaves.
   ========================================================================== */

/* ---------- Estados base de revelado ---------- */
[data-reveal] {
  opacity: 0;
  transition:
    opacity var(--dur-slow) var(--ease-soft),
    transform var(--dur-slow) var(--ease-soft),
    filter var(--dur-slow) var(--ease-soft);
  will-change: opacity, transform, filter;
}

[data-reveal="fade-up"]    { transform: translateY(36px); }
[data-reveal="fade-left"]  { transform: translateX(-40px); }
[data-reveal="fade-right"] { transform: translateX(40px); }
[data-reveal="scale"]      { transform: scale(0.92); }
[data-reveal="blur"]       { filter: blur(10px); transform: translateY(16px); }

[data-reveal].is-visible {
  opacity: 1;
  transform: translate(0, 0) scale(1);
  filter: blur(0);
}

/* Retardo escalonado para grupos de elementos (grids de tarjetas, etc.) */
[data-reveal-group] > [data-reveal] { transition-delay: calc(var(--stagger, 0) * 90ms); }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}

/* ---------- Respiración (elemento firma: círculo del logo) ---------- */
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50%      { transform: scale(1.18); opacity: 1; }
}

.brand-mark,
.breath-dot {
  animation: breathe var(--dur-breath) var(--ease-smooth) infinite;
}

/* ---------- Hero: entrada orquestada ---------- */
@keyframes heroRise {
  from { opacity: 0; transform: translateY(26px); filter: blur(6px); }
  to   { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.hero [data-hero] {
  opacity: 0;
  animation: heroRise 1.1s var(--ease-soft) forwards;
}
.hero [data-hero="1"] { animation-delay: 0.15s; }
.hero [data-hero="2"] { animation-delay: 0.4s; }
.hero [data-hero="3"] { animation-delay: 0.65s; }
.hero [data-hero="4"] { animation-delay: 0.9s; }

@keyframes heroZoomOut {
  from { transform: scale(1.14); }
  to   { transform: scale(1.08); }
}
.hero-media img { animation: heroZoomOut 1.8s var(--ease-soft) forwards; }

/* ---------- Indicador de scroll ---------- */
@keyframes scrollLine {
  0%   { top: -100%; }
  60%  { top: 100%; }
  100% { top: 100%; }
}

/* ---------- Ripple de botones ---------- */
@keyframes ripple {
  from { opacity: 0.55; transform: scale(0); }
  to   { opacity: 0; transform: scale(2.6); }
}

/* ---------- Parallax ligero (aplicado vía JS con --parallax-y) ---------- */
[data-parallax] {
  transform: translateY(var(--parallax-y, 0px));
  will-change: transform;
}

/* ---------- Acento decorativo flotante (círculos ambientales) ---------- */
@keyframes floatSlow {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(0, -18px); }
}

.ambient-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  pointer-events: none;
  animation: floatSlow 9s var(--ease-smooth) infinite;
}

/* ---------- Enlace subrayado animado (usado en nav ya definido en styles.css) ---------- */

/* ---------- Carga progresiva de imágenes ---------- */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-soft);
}
img[loading="lazy"].is-loaded { opacity: 1; }

/* ---------- Loader de página ---------- */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: var(--color-bg);
  transition: opacity var(--dur-slow) var(--ease-soft), visibility var(--dur-slow) var(--ease-soft);
}

.page-loader__ring {
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  border-top-color: var(--color-lavender-deep);
  animation: spin 1.1s linear infinite, breathe 3.2s var(--ease-smooth) infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero [data-hero] { animation: none !important; opacity: 1; }
  .hero-media img { animation: none !important; transform: scale(1); }
  .brand-mark, .breath-dot, .ambient-ring, .page-loader__ring { animation: none !important; }
}