/* ==========================================================================
   Layout: sections, grids, navigation, page headers, footer.
   ========================================================================== */

/* ---------------------------------------------------------------- Sections */
.section {
  position: relative;
  padding-block: var(--section);
  background: var(--bg);
  color: var(--fg);
}

.section--surface {
  --bg: var(--color-surface);
}

.section--dark {
  --bg: var(--color-primary);
  --fg: var(--color-text-light);
  --muted: rgba(245, 240, 232, 0.74);
  --accent: var(--color-secondary);
}

.section p:not([class]),
.section .lead {
  color: var(--muted);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.section-head > div,
.section-head--stack {
  display: grid;
  gap: var(--space-4);
  max-width: 760px;
}

.section-head--stack {
  display: grid;
  align-items: start;
  justify-content: start;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 7vw, 96px);
}

.split--top {
  align-items: start;
}

.split__copy {
  display: grid;
  gap: var(--space-6);
  justify-items: start;
}

.split__copy--sticky {
  position: sticky;
  top: calc(var(--nav-h) + var(--space-6));
}

.split__media img {
  width: 100%;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.btn-row--center {
  justify-content: center;
}

/* -------------------------------------------------------------- Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: var(--nav-h);
  padding-inline: var(--gutter);
  color: var(--color-text-light);
  border-bottom: 1px solid transparent;
  transition: height var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.nav.is-scrolled,
.page--solid-nav .nav,
.menu-open .nav {
  height: 72px;
  background: var(--color-glass-strong);
  border-bottom-color: var(--color-border);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

.menu-open .nav {
  background: var(--color-primary);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.page--solid-nav main {
  padding-top: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-light);
  text-decoration: none;
}

.logo__mark {
  flex: none;
  width: 40px;
  height: 40px;
}

.logo__text {
  display: grid;
}

.logo__name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.logo__tag {
  color: var(--color-secondary);
  font-family: var(--font-label);
  font-size: var(--text-label-sm);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  position: relative;
  padding-block: var(--space-2);
  font-family: var(--font-label);
  font-size: var(--text-label-sm);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-secondary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
}

.nav__link:hover,
.nav__link[aria-current='page'] {
  color: var(--color-secondary);
}

.nav__link:hover::after,
.nav__link[aria-current='page']::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  color: var(--color-text-light);
}

.nav__toggle span {
  position: absolute;
  right: 8px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition-base), width var(--transition-base), top var(--transition-base);
}

.nav__toggle span:first-child {
  top: 16px;
  width: 28px;
}

.nav__toggle span:last-child {
  top: 27px;
  width: 20px;
}

.nav__toggle[aria-expanded='true'] span {
  top: 21px;
  width: 26px;
}

.nav__toggle[aria-expanded='true'] span:first-child {
  transform: rotate(45deg);
}

.nav__toggle[aria-expanded='true'] span:last-child {
  transform: rotate(-45deg);
}

/* ------------------------------------------------------------- Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 790;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-8);
  padding: calc(72px + var(--space-8)) var(--gutter) var(--space-8);
  overflow-y: auto;
  background: var(--color-primary);
  color: var(--color-text-light);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.menu-open .mobile-menu {
  opacity: 1;
}

.mobile-menu__links {
  display: grid;
  gap: var(--space-4);
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 8vw, 2.5rem);
  line-height: 1.15;
  text-decoration: none;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-slow), transform var(--transition-slow), color var(--transition-fast);
}

.menu-open .mobile-menu__link {
  opacity: 1;
  transform: none;
}

.mobile-menu__link:nth-child(2) { transition-delay: 40ms; }
.mobile-menu__link:nth-child(3) { transition-delay: 80ms; }
.mobile-menu__link:nth-child(4) { transition-delay: 120ms; }
.mobile-menu__link:nth-child(5) { transition-delay: 160ms; }
.mobile-menu__link:nth-child(6) { transition-delay: 200ms; }

.mobile-menu__link:hover,
.mobile-menu__link[aria-current='page'] {
  color: var(--color-secondary);
}

.mobile-menu__foot {
  display: grid;
  gap: var(--space-4);
}

/* ------------------------------------------------------------- Page header */
.page-header {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: min(68vh, 620px);
  padding: calc(var(--nav-h) + var(--space-16)) 0 var(--space-24);
  overflow: hidden;
  background: var(--color-primary);
  color: var(--color-text-light);
  --accent: var(--color-secondary);
  --muted: rgba(245, 240, 232, 0.78);
}

.page-header__shade,
.cta-final__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 24, 0.72), rgba(26, 26, 24, 0.9));
}

.page-header__inner {
  position: relative;
  display: grid;
  gap: var(--space-4);
}

.page-header__title {
  max-width: 18ch;
}

.page-header__text {
  max-width: 62ch;
  color: rgba(245, 240, 232, 0.86);
}

.page-header--plain {
  min-height: 0;
  padding: var(--space-16) 0 var(--space-12);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  color: rgba(245, 240, 232, 0.72);
  font-family: var(--font-label);
  font-size: var(--text-label-sm);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.crumbs a {
  text-decoration: none;
  transition: color var(--transition-fast);
}

.crumbs a:hover {
  color: var(--color-secondary);
}

.crumbs--dark {
  color: var(--muted);
}

.crumbs--dark a:hover {
  color: var(--accent);
}

/* --------------------------------------------------------------- Final CTA */
.cta-final {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(78vh, 620px);
  padding-block: var(--section);
  overflow: hidden;
  background: var(--color-primary);
  color: var(--color-text-light);
  text-align: center;
}

.cta-final__shade {
  background: linear-gradient(180deg, rgba(26, 26, 24, 0.6), rgba(26, 26, 24, 0.8));
}

.cta-final__inner {
  position: relative;
  display: grid;
  justify-items: center;
  gap: var(--space-6);
}

.cta-final .lead {
  max-width: 52ch;
  color: rgba(245, 240, 232, 0.88);
}

/* ------------------------------------------------------------------ Footer */
.footer {
  --fg: var(--color-text-light);
  --accent: var(--color-secondary);
  padding: var(--space-24) 0 var(--space-8);
  border-top: 1px solid var(--color-border);
  background: var(--color-primary);
  color: var(--color-text-light);
  font-size: var(--text-sm);
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(260px, 1.6fr) repeat(4, minmax(0, 1fr));
  gap: var(--space-12) var(--space-8);
  padding-bottom: var(--space-16);
}

.footer__brand {
  display: grid;
  gap: var(--space-6);
  justify-items: start;
  max-width: 360px;
}

.footer__about {
  color: rgba(245, 240, 232, 0.76);
}

.footer__col ul {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  color: rgba(245, 240, 232, 0.82);
}

.footer__col a,
.footer__link {
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color var(--transition-fast);
}

.footer__col a:hover,
.footer__link:hover {
  color: var(--color-secondary);
}

.footer__link {
  text-align: left;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4) var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  color: rgba(245, 240, 232, 0.7);
  font-family: var(--font-label);
  font-size: var(--text-label-sm);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* -------------------------------------------------------------- Responsive */
@media (max-width: 1180px) {
  /* .nav prefix: must outrank .btn { display: inline-flex } from components.css */
  .nav .nav__links,
  .nav .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: block;
  }

  .nav__actions {
    gap: var(--space-3);
  }

  .footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  :root {
    --nav-h: 72px;
  }

  .split {
    grid-template-columns: minmax(0, 1fr);
  }

  .split__copy--sticky {
    position: static;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
  }
}

@media (max-width: 600px) {
  .nav,
  .nav.is-scrolled,
  .page--solid-nav .nav,
  .menu-open .nav {
    height: 64px;
  }

  :root {
    --nav-h: 64px;
  }

  .page--solid-nav main {
    padding-top: 64px;
  }

  .nav .lang-switcher {
    display: none;
  }

  .logo__mark {
    width: 32px;
    height: 32px;
  }

  .logo__name {
    font-size: 1.0625rem;
  }

  .nav .logo__tag {
    display: none;
  }

  .page-header {
    min-height: 0;
    padding-bottom: var(--space-16);
  }

  .footer {
    padding-top: var(--space-16);
  }

  .footer__top {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn-row > .btn {
    flex: 1 1 100%;
  }
}