/* ==========================================================================
   Animaciones — con propósito, respetando prefers-reduced-motion
   ========================================================================== */

@keyframes fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.hero__badge,
.hero__title,
.hero__lead,
.hero__diff,
.hero__actions,
.hero__stats {
  animation: fade-up 700ms var(--ease-out) both;
}

.hero__title { animation-delay: 80ms; }
.hero__lead { animation-delay: 160ms; }
.hero__diff { animation-delay: 220ms; }
.hero__actions { animation-delay: 280ms; }
.hero__stats { animation-delay: 340ms; }

.hero__media {
  animation: scale-in 800ms var(--ease-out) both;
  animation-delay: 120ms;
}

/* --- Revelado al hacer scroll --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

[data-reveal-group] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

[data-reveal-group].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-group].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-reveal-group].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-reveal-group].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-reveal-group].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-reveal-group].is-visible > *:nth-child(6) { transition-delay: 400ms; }

/* --- Línea temporal: trazo progresivo --- */
.timeline[data-reveal] .timeline::before { transition: none; }

.timeline-step {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

.timeline-step.is-visible { opacity: 1; transform: translateY(0); }

/* --- Contadores de estadísticas --- */
.stat-box__value { display: inline-block; }

/* --- Barra de progreso sutil en scroll (opcional, usada por JS) --- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--color-accent);
  z-index: calc(var(--z-nav) + 1);
  width: 0%;
  transition: width 100ms linear;
}

/* --- Parallax sutil del hero --- */
.hero__media { will-change: transform; }

/* --- Micro-interacciones --- */
.filter-chip,
.audience-card,
.service-card,
.case-card,
.price-card {
  will-change: transform;
}

.accordion-panel { will-change: max-height; }

/* --- Reducción de movimiento --- */
@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;
  }

  [data-reveal],
  [data-reveal-group] > *,
  .timeline-step {
    opacity: 1;
    transform: none;
  }
}