/* ============================================================
   animations.css — Scroll reveal & micro-interactions
   One-time, purposeful motion only.
   ============================================================ */

/* ── Reveal base state (hidden) ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-l) var(--ease-out),
    transform var(--duration-l) var(--ease-out);
}

/* ── Stagger delays for list items ── */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--duration-l) var(--ease-out),
    transform var(--duration-l) var(--ease-out);
}

.reveal-stagger > *:nth-child(1)  { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2)  { transition-delay: 60ms; }
.reveal-stagger > *:nth-child(3)  { transition-delay: 120ms; }
.reveal-stagger > *:nth-child(4)  { transition-delay: 180ms; }
.reveal-stagger > *:nth-child(5)  { transition-delay: 240ms; }
.reveal-stagger > *:nth-child(6)  { transition-delay: 300ms; }
.reveal-stagger > *:nth-child(7)  { transition-delay: 360ms; }
.reveal-stagger > *:nth-child(8)  { transition-delay: 420ms; }
.reveal-stagger > *:nth-child(9)  { transition-delay: 480ms; }

/* ── Visible state (triggered by JS) ── */
.reveal.visible,
.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ── Slide from left ── */
.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition:
    opacity var(--duration-l) var(--ease-out),
    transform var(--duration-l) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ── Hero entrance (pre-built, no JS needed) ── */
@keyframes hero-fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-eyebrow {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 100ms both;
}

.hero-name {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 220ms both;
}

.hero-tagline {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 340ms both;
}

.hero-meta {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 400ms both;
}

.hero-actions {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 480ms both;
}

.hero-scroll-hint {
  animation: hero-fade-up var(--duration-l) var(--ease-out) 700ms both;
}

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

  .hero-eyebrow,
  .hero-name,
  .hero-tagline,
  .hero-meta,
  .hero-actions,
  .hero-scroll-hint {
    animation: none;
  }

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