/* ==========================================================================
   ANIMATION SYSTEM
   Performance rule: only animate transform + opacity (+ occasional filter).
   ========================================================================== */

/* ---- Scroll reveal (JS toggles .is-visible via IntersectionObserver) ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  will-change: opacity, transform;
}

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

.reveal-fade {
  opacity: 0;
  transition: opacity 800ms var(--ease-out);
}

.reveal-fade.is-visible {
  opacity: 1;
}

/* Stagger children within a revealed group */
.reveal-group .reveal-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.reveal-group.is-visible .reveal-item:nth-child(1) { transition-delay: 0ms; }
.reveal-group.is-visible .reveal-item:nth-child(2) { transition-delay: 90ms; }
.reveal-group.is-visible .reveal-item:nth-child(3) { transition-delay: 180ms; }
.reveal-group.is-visible .reveal-item:nth-child(4) { transition-delay: 270ms; }
.reveal-group.is-visible .reveal-item:nth-child(5) { transition-delay: 360ms; }
.reveal-group.is-visible .reveal-item:nth-child(6) { transition-delay: 450ms; }

.reveal-group.is-visible .reveal-item {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Page load sequence (hero) ---- */
.load-in {
  opacity: 0;
  transform: translateY(22px);
  animation: loadIn 900ms var(--ease-out) forwards;
}

@keyframes loadIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-header.load-in {
  transform: translateY(-14px);
  animation: navIn 700ms var(--ease-out) forwards;
}

@keyframes navIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-visual.load-in {
  transform: scale(0.96);
  animation: heroImageIn 1000ms var(--ease-out) forwards;
}

@keyframes heroImageIn {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Delays for the staged hero entrance */
.delay-1 { animation-delay: 80ms; }
.delay-2 { animation-delay: 220ms; }
.delay-3 { animation-delay: 360ms; }
.delay-4 { animation-delay: 480ms; }
.delay-5 { animation-delay: 260ms; }

/* ---- Decorative float (very subtle, ambient) ---- */
@keyframes floatSlow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(10px, -14px); }
}

.hero-decor--one {
  animation: floatSlow 11s ease-in-out infinite;
}

.hero-decor--two {
  animation: floatSlow 14s ease-in-out infinite reverse;
}

/* ---- Signature pulse line draw-on ---- */
.pulse-line-path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawPulse 2.4s var(--ease-out) 500ms forwards;
}

@keyframes drawPulse {
  to { stroke-dashoffset: 0; }
}

.pulse-glow {
  animation: pulseGlow 3.2s ease-in-out infinite;
  transform-origin: center;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.15); }
}

/* ---- Mobile menu link underline on active state handled in components.css ---- */

@media (prefers-reduced-motion: reduce) {
  .hero-decor--one,
  .hero-decor--two,
  .pulse-glow,
  .pulse-line-path {
    animation: none !important;
  }

  .pulse-line-path {
    stroke-dashoffset: 0;
  }
}