/*
  Shared header, primary navigation and footer. Mobile-first.
  The desktop navigation starts at 64rem (1024px). Media queries cannot read
  custom properties, so the value is written out here and in scripts/nav.js.

  Progressive enhancement: scripts/nav.js adds the "js" class to <html>.
  Without JavaScript the mobile menu is shown expanded and the desktop
  dropdowns open on hover and keyboard focus.
*/

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

.site-header {
  position: relative;
  z-index: 20;
  background: var(--color-background);
  border-block-end: var(--border-width) solid var(--border-color);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  column-gap: var(--space-6);
  min-height: var(--header-min-height);
}

.site-header__brand {
  display: inline-flex;
  flex: none;
  padding-block: var(--space-2);
}

.site-header__brand img {
  width: auto;
  height: 3rem;
}

/* ---------- Mobile menu button ---------- */

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-3);
  min-height: 2.75rem;
  padding: 0 var(--space-4);
  color: var(--color-ink);
  font-weight: var(--font-weight-semibold);
  background: transparent;
  border: var(--border-width) solid var(--color-graphite);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.js .nav-toggle { display: inline-flex; }

.nav-toggle__icon {
  position: relative;
  width: 1.125rem;
  height: 2px;
  background: currentColor;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  height: 2px;
  background: currentColor;
  transition: transform var(--motion-standard) var(--motion-ease);
}

.nav-toggle__icon::before { inset-block-start: -6px; }
.nav-toggle__icon::after { inset-block-start: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Navigation (mobile) ---------- */

.site-nav {
  order: 3;
  flex: 0 0 100%;
}

.js .site-nav { display: none; }
.js .site-nav.is-open { display: block; padding-block-end: var(--space-4); }

.site-nav__list,
.site-nav__menu {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item {
  border-block-start: var(--border-width) solid var(--border-color);
}

.site-nav__link,
.site-nav__menu a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  line-height: 1.25;
  text-decoration: none;
}

.site-nav__link {
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) 0;
  text-align: start;
  background: none;
  border: 0;
  border-radius: 0;
  cursor: pointer;
}

.site-nav__link[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

/* Expand button: hidden without JavaScript, where submenus are always shown. */
.site-nav__expand {
  display: none;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  min-height: 2.75rem;
  padding: 0;
  color: var(--color-ink);
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.js .site-nav__expand { display: flex; }

.site-nav__expand::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-inline-end: 2px solid currentColor;
  border-block-end: 2px solid currentColor;
  transform: translateY(-0.15rem) rotate(45deg);
  transition: transform var(--motion-fast) var(--motion-ease);
}

.site-nav__expand[aria-expanded="true"]::after {
  transform: translateY(0.1rem) rotate(225deg);
}

/* Standalone dropdown trigger ("Services"): full label + chevron, unlike the
   small icon-only expand button a split control would use. Placed after the
   base .site-nav__expand rule so it wins for the shared properties. */
.site-nav__expand--label {
  display: none;
  width: 100%;
  justify-content: space-between;
  padding: var(--space-3) 0;
}

.js .site-nav__expand--label { display: flex; }

.site-nav__menu {
  padding: 0 0 var(--space-3) var(--space-4);
}

.js .site-nav__menu { display: none; }
.js .site-nav__menu.is-open { display: block; }

.site-nav__menu a {
  padding: var(--space-2) 0;
  font-weight: var(--font-weight-regular);
}

/* ---------- Navigation (desktop) ---------- */

@media (min-width: 64rem) {
  .site-header__inner { flex-wrap: nowrap; }

  .js .nav-toggle { display: none; }

  .site-nav,
  .js .site-nav,
  .js .site-nav.is-open {
    display: block;
    order: 0;
    flex: 0 1 auto;
    padding: 0;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }

  .site-nav__item {
    position: relative;
    border: 0;
  }

  .site-nav__link {
    width: auto;
    min-height: 2.75rem;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    border-radius: var(--radius-sm);
  }

  .site-nav__link:hover,
  .site-nav__expand:hover,
  .site-nav__expand[aria-expanded="true"] { background: var(--color-soft-gray); }

  .site-nav__expand--label {
    width: auto;
    padding: var(--space-2) var(--space-3);
  }

  .site-nav__menu {
    position: absolute;
    inset-block-start: 100%;
    inset-inline-start: 0;
    z-index: 30;
    display: none;
    min-width: 17rem;
    padding: var(--space-2);
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
  }

  .site-nav__menu--wide {
    min-width: 34rem;
    inset-inline-start: auto;
    inset-inline-end: 0;
    column-gap: var(--space-2);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-nav__menu a {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
  }

  .site-nav__menu a:hover { background: var(--color-soft-gray); }

  .js .site-nav__menu--wide.is-open { display: grid; }

  /* Without JavaScript: open on hover and keyboard focus. */
  html:not(.js) .site-nav__item:hover > .site-nav__menu,
  html:not(.js) .site-nav__item:focus-within > .site-nav__menu { display: block; }

  html:not(.js) .site-nav__item:hover > .site-nav__menu--wide,
  html:not(.js) .site-nav__item:focus-within > .site-nav__menu--wide { display: grid; }
}

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

.site-footer {
  padding-block: clamp(var(--space-12), 6vw, var(--space-16)) var(--space-8);
  background: var(--color-charcoal);
}

.site-footer__grid,
.site-footer__nav {
  display: grid;
  gap: var(--space-8);
}

.site-footer__grid { gap: var(--space-12); }

.site-footer__name {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

.site-footer__heading {
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
}

.site-footer__heading--spaced { margin-block-start: var(--space-8); }

.site-footer__heading a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  text-underline-offset: 0.2em;
}

.site-footer__list {
  display: grid;
  gap: var(--space-1);
  margin: 0 0 var(--space-6);
  padding: 0;
  color: var(--color-gray);
  list-style: none;
}

.site-footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--color-gray);
  text-underline-offset: 0.2em;
}

.site-footer__list a:hover { color: var(--color-white); }

.site-footer__legal {
  max-width: none;
  margin: var(--space-12) 0 0;
  padding-block-start: var(--space-6);
  color: var(--color-gray);
  font-size: var(--font-size-sm);
  border-block-start: var(--border-width) solid var(--color-graphite);
}

@media (min-width: 48rem) {
  .site-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 64rem) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr); }
  .site-footer__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-footer__list a,
  .site-footer__heading a { min-height: 2rem; }
}