/* Shared shell: skip link, header (lockup, navigation, language toggle, WhatsApp CTA, mobile menu) and footer. */

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-m);
  top: var(--space-m);
  z-index: 100;
  padding: var(--space-xs) var(--space-m);
  background: var(--color-text);
  color: var(--color-background);
  border-radius: var(--radius-s);
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
  color: var(--color-background);
}

/* The lockup comes as two exports: ink strokes on the light phases, dune strokes on the dark ones. */
.logo {
  width: auto;
  height: 1.625rem;
}
.logo--dark,
[data-phase="dusk"] .logo--light,
[data-phase="night"] .logo--light {
  display: none;
}
[data-phase="dusk"] .logo--dark,
[data-phase="night"] .logo--dark {
  display: block;
}

/* ---------- Header ---------- */

/* Heights for layouts that fill one screen under the sticky header. `vh` is off limits (a capture grows its viewport
   to the page, so a vh height never settles): `--viewport-h` is the design viewport's height (VIEWPORTS in page.ts),
   `--header-h` the closed header's (bar + 1px rule), and `--screen` what is left of the first screen below it. */
:root {
  --viewport-h: 900px;
  --header-h: calc(4.75rem + 1px);
  --screen: calc(var(--viewport-h) - var(--header-h));
}
@media (max-width: 60rem) {
  :root {
    --viewport-h: 844px;
    /* Bar padding (2 × 0.75rem) around the 2.75rem controls, plus the rule. */
    --header-h: calc(4.25rem + 1px);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-background);
  border-block-end: var(--rule);
}
.site-header__bar {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  min-height: calc(var(--header-h) - 1px);
}
.site-header__logo {
  display: inline-flex;
  flex: none;
  padding-block: var(--space-xs);
}
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.site-nav__list {
  display: flex;
  gap: var(--space-xl);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav__link {
  position: relative;
  display: inline-block;
  padding-block: var(--space-xs);
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}
/* The current page: a short Sadu stroke under the label. */
.site-nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 2px;
  border-radius: 1px;
  background: var(--color-line);
  transform: scaleX(0);
  transition: transform 0.2s var(--ease);
}
.site-nav__link:hover {
  color: var(--color-text);
}
.site-nav__link:hover::after {
  transform: scaleX(1);
}
.site-nav__link[aria-current="page"] {
  font-weight: var(--font-weight-medium);
}
.site-nav__link[aria-current="page"]::after {
  background: var(--color-accent);
  transform: scaleX(1);
}
.site-nav__extras {
  display: none;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-l);
  flex: none;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--space-2xs);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
}
.lang-toggle:hover {
  color: var(--color-accent-text);
  text-decoration-color: currentColor;
}
.btn--whatsapp {
  min-height: 2.75rem;
  padding-block: 0.5rem;
}

.menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--color-text-muted);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
}
.menu-button .icon {
  width: 1.375rem;
  height: 1.375rem;
}
.menu-button .icon--close,
[data-nav-open="true"] .menu-button .icon--menu {
  display: none;
}
[data-nav-open="true"] .menu-button .icon--close {
  display: block;
}

/* ---------- Mobile: lockup, language, WhatsApp and a menu that opens below the bar ---------- */

@media (max-width: 60rem) {
  .site-header__bar {
    flex-wrap: wrap;
    gap: 0 var(--space-s);
    min-height: 0;
    padding-block: var(--space-s);
  }
  .site-header .logo {
    height: 1.2rem;
  }
  .site-header__actions {
    margin-inline-start: auto;
    gap: var(--space-xs);
  }
  .site-header__actions .lang-toggle {
    margin-inline-end: var(--space-2xs);
  }
  .btn--whatsapp {
    width: 2.75rem;
    padding: 0;
  }
  .btn--whatsapp .icon {
    width: 1.375rem;
    height: 1.375rem;
  }
  /* The visible short label goes; the full call to action stays in its `.visually-hidden` span. */
  .btn--whatsapp__label {
    display: none;
  }
  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    order: 3;
    flex-basis: 100%;
    flex-direction: column;
    padding-block: var(--space-xs) var(--space-xl);
  }
  [data-nav-open="true"] .site-nav {
    display: flex;
  }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
  }
  .site-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-m);
    border-block-end: var(--rule);
    font-size: var(--type-h3-size);
    line-height: var(--type-h3-line-height);
    font-weight: var(--font-weight-light);
  }
  .site-nav__list li:first-child .site-nav__link {
    border-block-start: var(--rule);
  }
  .site-nav__link::after {
    position: static;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: transparent;
    transform: none;
    transition: none;
  }
  .site-nav__link[aria-current="page"] {
    font-weight: var(--font-weight-regular);
  }
  .site-nav__link[aria-current="page"]::after {
    background: var(--color-accent);
  }
  .site-nav__extras {
    display: block;
    margin-block-start: var(--space-xl);
  }
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: var(--space-4xl) var(--space-xl);
  border-block-start: var(--rule);
  background: var(--color-background);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl) var(--grid-gap);
}
.site-footer__logo {
  display: inline-flex;
}
.site-footer .logo {
  height: 1.75rem;
}
.site-footer__tagline {
  max-width: 26rem;
  margin-block-start: var(--space-l);
  font-size: var(--type-lead-size);
  line-height: var(--type-lead-line-height);
  font-weight: var(--font-weight-light);
}
.site-footer__heading {
  margin-block-end: var(--space-m);
  font-size: var(--type-caption-size);
  line-height: var(--type-caption-line-height);
  font-weight: var(--type-caption-weight);
  color: var(--color-text-muted);
}
.site-footer__contact {
  display: grid;
  gap: var(--space-m);
}
.site-footer__contact dt {
  font-size: var(--type-caption-size);
  line-height: var(--type-caption-line-height);
  color: var(--color-text-muted);
}
.site-footer__nav {
  display: grid;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer__nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
}
.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs) var(--space-xl);
  margin-block-start: var(--space-3xl);
  padding-block-start: var(--space-l);
  border-block-start: var(--rule);
  font-size: var(--type-caption-size);
  line-height: var(--type-caption-line-height);
  color: var(--color-text-muted);
}
/* The registration line: its label and the (pending) number, kept apart by a gap. */
.site-footer__registration {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2xs) var(--space-xs);
}
.site-footer__base .lang-toggle {
  margin-inline-start: auto;
  min-height: 0;
  color: var(--color-text);
}

@media (max-width: 60rem) {
  .site-footer {
    padding-block-start: var(--space-3xl);
  }
  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .site-footer__brand {
    grid-column: 1 / -1;
  }
  .site-footer__base {
    margin-block-start: var(--space-2xl);
  }
}
@media (max-width: 30rem) {
  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}