/* ══════════════════════════════════════════════════════════════
   EnCube Labs — CSS Keyframe Animations
   ══════════════════════════════════════════════════════════════ */

/* ── Fade In Up ──────────────────────────────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Fade In ─────────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Fade In Down ────────────────────────────────────────────── */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Scale In ────────────────────────────────────────────────── */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ── Slide In From Left ──────────────────────────────────────── */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-32px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── Slide In From Right ─────────────────────────────────────── */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(32px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── Shimmer (loading placeholder) ───────────────────────────── */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    var(--color-surface-cool) 25%,
    var(--color-border-light) 50%,
    var(--color-surface-cool) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

/* ── Reveal Animation Classes (used with GSAP or Intersection Observer) ─ */

/* Elements start invisible, GSAP/JS adds .is-revealed */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal--left {
  opacity: 0;
  transform: translateX(-32px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal--right {
  opacity: 0;
  transform: translateX(32px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal--scale {
  opacity: 0;
  transform: scale(0.95);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.is-revealed,
.reveal--left.is-revealed,
.reveal--right.is-revealed,
.reveal--scale.is-revealed {
  opacity: 1;
  transform: none;
}

/* Stagger delay helpers (for child elements) */
.reveal-stagger > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2) { transition-delay: 100ms; }
.reveal-stagger > *:nth-child(3) { transition-delay: 200ms; }
.reveal-stagger > *:nth-child(4) { transition-delay: 300ms; }
.reveal-stagger > *:nth-child(5) { transition-delay: 400ms; }
.reveal-stagger > *:nth-child(6) { transition-delay: 500ms; }

/* ── Pulse (for subtle attention) ────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ── No-JS fallback: show everything if JS is disabled ──────── */
.no-js .reveal,
.no-js .reveal--left,
.no-js .reveal--right,
.no-js .reveal--scale {
  opacity: 1;
  transform: none;
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--left,
  .reveal--right,
  .reveal--scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll-line::after {
    animation: none;
  }

  .btn:hover,
  .programs-duo__card:hover,
  .program-tile:hover,
  .card:hover {
    transform: none;
  }
}