/* ==========================================================================
   15-motion.css — Scroll-reveal, hover transitions, reduced-motion overrides
   Motion budget: scroll-reveal (600ms), 60ms stagger, 200ms image hover.
   No parallax. No custom cursor. No Lottie.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Scroll-reveal — base state (invisible, slightly low)
   JS adds .is-visible via IntersectionObserver in main.js
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--transition-reveal),
    transform var(--transition-reveal);
}

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

/* Stagger children (set via JS data-delay or inline style) */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--transition-reveal),
    transform var(--transition-reveal);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay:   0ms; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay:  60ms; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 120ms; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 180ms; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 240ms; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 300ms; }
.reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 360ms; }
.reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 420ms; }
.reveal-stagger.is-visible > *:nth-child(9) { transition-delay: 480ms; }
.reveal-stagger.is-visible > *:nth-child(10){ transition-delay: 540ms; }

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

/* --------------------------------------------------------------------------
   Primary button — hover lift
   See design system 4.1 for full states
   -------------------------------------------------------------------------- */
.btn--primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  height: 48px;
  padding: 0 var(--space-32);
  border-radius: var(--radius-pill);
  background-color: var(--color-rust);
  color: var(--color-paper);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  min-width: 120px;
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    transform 100ms ease;
}

.btn--primary:hover {
  background-color: var(--color-rust-hover);
  color: var(--color-paper);
  transform: translateY(-1px);
}

.btn--primary:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 3px;
  background-color: var(--color-rust);
}

.btn--primary:active {
  background-color: var(--color-rust-hover);
  transform: translateY(0);
}

.btn--primary:disabled {
  background-color: var(--color-bone);
  color: var(--color-dust);
  cursor: not-allowed;
  transform: none;
}

/* Full-width variant */
.btn--primary--full,
.btn--ghost--full {
  width: 100%;
}

/* --------------------------------------------------------------------------
   Ghost button
   -------------------------------------------------------------------------- */
.btn--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  height: 48px;
  padding: 0 var(--space-32);
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  border: 1.5px solid var(--color-ink);
  cursor: pointer;
  min-width: 120px;
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    transform 100ms ease;
}

.btn--ghost:hover {
  background-color: rgba(36, 31, 26, 0.06);
  color: var(--color-ink);
  transform: translateY(-1px);
}

.btn--ghost:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 3px;
}

/* Ghost on dusk section — inverted */
.section--dusk .btn--ghost,
.visit .btn--ghost {
  color: var(--color-paper);
  border-color: var(--color-paper);
}

.section--dusk .btn--ghost:hover,
.visit .btn--ghost:hover {
  background-color: rgba(242, 236, 223, 0.08);
  color: var(--color-paper);
}

.section--dusk .btn--ghost:active,
.visit .btn--ghost:active {
  background-color: rgba(242, 236, 223, 0.15);
  transform: translateY(0);
}

.section--dusk .btn--ghost:focus-visible,
.visit .btn--ghost:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Link button (text CTA)
   -------------------------------------------------------------------------- */
.btn--link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-green);
  text-decoration: underline;
  text-decoration-color: var(--color-rust);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  cursor: pointer;
  transition: color var(--transition-fast), text-decoration-thickness var(--transition-fast);
}

.btn--link:hover {
  color: var(--color-rust);
  text-decoration-thickness: 2px;
}

.btn--link:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Mobile: larger touch targets */
@media (max-width: 768px) {
  .btn--primary { height: 52px; }
  .btn--ghost   { height: 52px; }
}

/* --------------------------------------------------------------------------
   Prefers-reduced-motion — kill all animations
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  /* Reveal elements: just show them immediately */
  .reveal,
  .reveal-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  /* Hero content: show immediately */
  .hero__content {
    opacity: 1 !important;
    transition: none !important;
  }

  /* Scroll cue: no bounce */
  .hero__scroll-cue {
    animation: none !important;
  }
}