/* Motion tokens */
:root {
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --duration-fast: 150ms;
  --duration-normal: 400ms;
  --duration-slow: 650ms;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
  }
}

/* Page load — hero */
.hero__copy > * {
  opacity: 0;
  transform: translateY(14px);
}

.hero__media {
  opacity: 0;
  transform: translateY(10px);
}

body.is-loaded .hero__copy > * {
  opacity: 1;
  transform: none;
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

body.is-loaded .hero__title {
  transition-delay: 80ms;
}

body.is-loaded .hero__lead {
  transition-delay: 160ms;
}

body.is-loaded .hero__copy .btn-row {
  transition-delay: 240ms;
}

body.is-loaded .hero__media {
  opacity: 1;
  transform: none;
  transition: opacity var(--duration-slow) var(--ease-out) 200ms,
    transform var(--duration-slow) var(--ease-out) 200ms;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

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

[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

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

[data-reveal-stagger].is-visible > *:nth-child(1) {
  transition-delay: 0ms;
}
[data-reveal-stagger].is-visible > *:nth-child(2) {
  transition-delay: 70ms;
}
[data-reveal-stagger].is-visible > *:nth-child(3) {
  transition-delay: 140ms;
}
[data-reveal-stagger].is-visible > *:nth-child(4) {
  transition-delay: 210ms;
}
[data-reveal-stagger].is-visible > *:nth-child(5) {
  transition-delay: 280ms;
}
[data-reveal-stagger].is-visible > *:nth-child(6) {
  transition-delay: 350ms;
}

/* Disclosures — height driven by js/disclosures.js */
.disclosure__content {
  height: 0;
  overflow: hidden;
}

.disclosure summary::after {
  transition: transform 0.35s var(--ease-out), color 0.2s;
}

.disclosure[open] summary::after {
  transform: rotate(45deg);
}

/* Mobile nav */
.mobile-nav {
  display: block;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--duration-normal) var(--ease-out),
    visibility var(--duration-normal),
    transform var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-nav a {
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.mobile-nav.is-open a {
  opacity: 1;
  transform: translateX(0);
}

.mobile-nav.is-open li:nth-child(1) a { transition-delay: 50ms; }
.mobile-nav.is-open li:nth-child(2) a { transition-delay: 90ms; }
.mobile-nav.is-open li:nth-child(3) a { transition-delay: 130ms; }
.mobile-nav.is-open li:nth-child(4) a { transition-delay: 170ms; }
.mobile-nav.is-open li:nth-child(5) a { transition-delay: 210ms; }
.mobile-nav.is-open li:nth-child(6) a { transition-delay: 250ms; }

/* Gallery filter */
.gallery-item {
  transition: opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.gallery-item.is-filter-hide {
  opacity: 0;
  transform: scale(0.98);
  pointer-events: none;
}

.gallery-item.is-filter-hidden {
  display: none;
}

/* Filter buttons */
.filter-btn {
  transition: background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast),
    color var(--duration-fast);
}

/* Cards & buttons */
.service-card {
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast);
}

@media (hover: hover) {
  .service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
  }

  .link-arrow:hover::after {
    transform: translateX(4px);
  }
}

.link-arrow::after {
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn {
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast),
    border-color var(--duration-fast);
}

/* Before / after handle */
.before-after__knob {
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast);
}

.before-after:active .before-after__knob,
.before-after:focus-within .before-after__knob {
  transform: translate(-50%, -50%) scale(1.06);
  box-shadow: 0 12px 28px rgba(18, 22, 28, 0.12);
}

/* Sticky CTA */
.sticky-cta {
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-out);
}

.sticky-cta.is-visible {
  transform: translateY(0);
}

/* Header */
.site-header {
  transition: background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast),
    box-shadow var(--duration-fast);
}

/* Section headers */
.section-header--compact,
.ba-section__header {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.section-header--compact.is-visible,
.ba-section__header.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.testimonial {
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

@media (hover: hover) {
  .testimonial:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-border-strong);
  }
}

/* CTA band */
.cta-band {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

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

@media (prefers-reduced-motion: reduce) {
  .hero__copy > *,
  .hero__media,
  .reveal,
  [data-reveal-stagger] > *,
  .section-header--compact,
  .ba-section__header,
  .cta-band,
  .mobile-nav,
  .mobile-nav a,
  .gallery-item,
  .disclosure__content {
    height: auto;
    overflow: visible;
  }

  .sticky-cta {
    transform: none;
  }

  .service-card:hover {
    transform: none;
  }
}