/* Shared header chrome. Page layouts, footer, and content sections stay untouched. */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1.25rem 1.75rem;
  height: 92px;
  min-height: 92px;
  padding: 0 var(--chrome-gutter, clamp(1.25rem, 5vw, 5.5rem));
  background: color-mix(in oklab, var(--paper) 86%, transparent);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.site-header .brand,
.site-header .brand img {
  width: 280px;
  height: 58px;
  max-height: 58px;
}

.site-header .brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  overflow: hidden;
}

.site-header .brand img {
  object-fit: cover;
  object-position: left center;
}

.site-header .menu-button {
  display: none;
  margin-left: auto;
  min-height: 40px;
  padding: .45rem .8rem;
  border: 1px solid var(--line);
  border-radius: .4rem;
  background: var(--paper);
  color: var(--ink);
  font: 700 .8rem / 1 var(--sans);
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
}

.site-header .menu-button:hover,
.site-header .menu-button:focus-visible,
.site-header .menu-button[aria-expanded="true"] {
  border-color: var(--ink);
  background: var(--paper);
  color: var(--ink);
}

.site-header .site-nav {
  display: flex;
  align-items: center;
  gap: .35rem .85rem;
  height: auto;
  margin-left: auto;
  font-size: .82rem;
  font-weight: 650;
}

.site-header .site-nav > a:not(.button),
.site-header .nav-group > button {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: auto;
  min-height: 40px;
  padding: .35rem .45rem;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  letter-spacing: -.01em;
  opacity: 1;
  cursor: pointer;
  white-space: nowrap;
}

.site-header .site-nav > a:not(.button):after,
.site-header .nav-group > button:after {
  content: "";
  position: absolute;
  right: .45rem;
  bottom: .35rem;
  left: .45rem;
  height: 1.5px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}

.site-header .site-nav > a:not(.button):hover,
.site-header .nav-group > button:hover,
.site-header .nav-group.is-open > button {
  color: var(--ink);
}

.site-header .site-nav > a:not(.button):hover:after,
.site-header .site-nav > a[aria-current="page"]:after,
.site-header .nav-group > button:hover:after,
.site-header .nav-group.is-current > button:after,
.site-header .nav-group.is-open > button:after {
  transform: scaleX(1);
}

.site-header .site-nav > a[aria-current="page"],
.site-header .nav-group.is-current > button {
  color: var(--ink);
}

.site-header .nav-group > button span {
  display: inline-grid;
  place-items: center;
  width: 1em;
  margin-left: .15rem;
  color: var(--muted);
  font-weight: 500;
  transition: transform .18s ease, color .18s ease;
}

.site-header .nav-group.is-open > button span,
.site-header .nav-group.is-current > button span {
  color: var(--ink);
}

.site-header .nav-group.is-open > button span {
  transform: rotate(45deg);
}

.site-header .nav-group {
  position: relative;
}

.site-header .mega-menu {
  position: absolute;
  top: calc(100% + .55rem);
  left: -1rem;
  z-index: 30;
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .2rem;
  width: min(440px, 72vw);
  min-width: 0;
  padding: .85rem;
  border: 1px solid var(--line);
  border-radius: .5rem;
  background: var(--paper);
  box-shadow: 0 18px 40px rgb(10 10 18 / .1);
}

.site-header .nav-group.is-open .mega-menu {
  display: grid;
}

.site-header .mega-menu > p {
  grid-column: 1 / -1;
  margin: 0 .35rem .45rem;
  color: var(--muted);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.site-header .mega-menu a {
  display: grid;
  gap: .2rem;
  min-width: 0;
  min-height: 0;
  padding: .7rem .75rem;
  border-radius: .4rem;
  color: var(--ink);
}

.site-header .mega-menu a:hover,
.site-header .mega-menu a:focus-visible {
  background: oklch(96.5% .005 90);
}

.site-header .mega-menu a[aria-current="page"] {
  background: oklch(95.5% .008 90);
  box-shadow: inset 2px 0 0 var(--ink);
  color: var(--ink);
}

.site-header .mega-menu b {
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: -.015em;
}

.site-header .mega-menu small {
  color: var(--muted);
  font-size: .74rem;
  font-weight: 500;
  line-height: 1.4;
}

.site-header .site-nav > a.button,
.site-header .site-nav > a.button:hover,
.site-header .site-nav > a.button:focus-visible,
.site-header .site-nav > a.button[aria-current="page"],
.site-header .site-nav > a.button span {
  color: #fff;
}

.site-header .site-nav > a.button {
  align-self: center;
  width: auto;
  height: auto;
  min-height: 40px;
  margin-left: .35rem;
  padding: .55rem 1rem;
  border: 0;
  border-radius: .4rem;
  background: var(--blue);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
  box-shadow: none;
  transform: none;
}

.site-header .site-nav > a.button:hover,
.site-header .site-nav > a.button:focus-visible {
  background: oklch(28% .012 260);
  transform: translateY(-1px);
}

.site-header .site-nav > a.button[aria-current="page"] {
  box-shadow: 0 0 0 2px var(--paper), 0 0 0 4px var(--ink);
}

@media (max-width: 1180px) {
  .site-header {
    height: 84px;
    min-height: 84px;
  }

  .site-header .brand,
  .site-header .brand img {
    width: 240px;
    height: 50px;
    max-height: 50px;
  }

  .site-header .site-nav {
    gap: .15rem .55rem;
    font-size: .78rem;
  }
}

@media (max-width: 1040px) {
  .site-header {
    height: 78px;
    min-height: 78px;
  }

  .site-header .brand,
  .site-header .brand img {
    width: 220px;
    height: 46px;
    max-height: 46px;
  }

  .site-header .menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-header .site-nav {
    position: absolute;
    top: 78px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: .15rem;
    max-height: calc(100dvh - 78px);
    margin: 0;
    padding: .85rem var(--chrome-gutter, 1.25rem) 1.25rem;
    overflow: auto;
    background: var(--paper);
    border-top: 1px solid var(--line);
    box-shadow: 0 18px 32px rgb(10 10 18 / .08);
  }

  .site-header .site-nav.is-open {
    display: flex;
  }

  .site-header .site-nav > a:not(.button),
  .site-header .nav-group > button {
    width: 100%;
    min-height: 48px;
    justify-content: space-between;
    padding: .7rem .15rem;
  }

  .site-header .site-nav > a:not(.button):after,
  .site-header .nav-group > button:after {
    right: 0;
    bottom: .35rem;
    left: 0;
  }

  .site-header .nav-group {
    width: 100%;
  }

  .site-header .mega-menu {
    position: static;
    top: auto;
    left: auto;
    width: 100%;
    margin: .15rem 0 .35rem;
    padding: .45rem;
    box-shadow: none;
    background: oklch(97% .004 90);
  }

  .site-header .mega-menu a {
    min-height: 52px;
    align-content: center;
  }

  .site-header .site-nav > a.button {
    width: 100%;
    margin: .55rem 0 0;
    min-height: 48px;
    justify-content: center;
  }
}

@media (max-width: 560px) {
  .site-header {
    height: 74px;
    min-height: 74px;
  }

  .site-header .brand,
  .site-header .brand img {
    width: 196px;
    height: 42px;
    max-height: 42px;
  }

  .site-header .site-nav {
    top: 74px;
    max-height: calc(100dvh - 74px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .site-nav > a:not(.button):after,
  .site-header .nav-group > button:after,
  .site-header .nav-group > button span,
  .site-header .site-nav > a.button {
    transition: none;
    transform: none;
  }
}