/*
 * G1-04 Shared Header / Navigation.
 * Values are extracted from the final shared-header layer of the frozen contract.
 */
.site-header {
  height: 86px;
  border-bottom: 1px solid #e4e4e7;
  background: #f7f7f8;
}

.site-header.site-header--internal {
  background: rgba(247, 247, 248, .96);
  position: relative;
  z-index: 80;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header .nav {
  width: min(1504px, calc(100% - 64px));
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 48px;
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: #111;
  text-decoration: none;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -.04em;
}

.site-header .mark {
  width: 34px;
  height: 35px;
  display: block;
  object-fit: contain;
  flex: 0 0 auto;
}

.site-header .nav-center {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  justify-self: end;
}

.site-header .nav-primary-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-header .nav-toggle {
  display: none;
}

.site-header .nav-primary-link {
  position: relative;
  color: #111;
  text-decoration: none;
  transition: color .2s ease;
}

.site-header .nav-primary-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 1px;
  background: #111;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s ease;
}

.site-header .nav-primary-link:hover::after,
.site-header .nav-primary-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-header .nav-conversation-cta {
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid #111827;
  border-radius: 999px;
  background: #111827;
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.site-header .nav-conversation-cta:hover {
  background: #242b39;
  border-color: #242b39;
  transform: translateY(-1px);
}

.site-header .nav-conversation-cta:focus-visible,
.site-header .nav-primary-link:focus-visible,
.site-header .nav-toggle:focus-visible {
  outline: 2px solid #5b43ff;
  outline-offset: 3px;
}

@media (max-width: 1280px) {
  .site-header .nav {
    width: calc(100% - 48px);
  }
}

@media (max-width: 1180px) and (min-width: 1021px) {
  .site-header .nav {
    gap: 28px;
  }

  .site-header .nav-center {
    gap: 20px;
  }

  .site-header .nav-primary-links {
    gap: 22px;
  }

  .site-header .nav-conversation-cta {
    padding: 0 14px;
    font-size: 12.5px;
  }
}

@media (max-width: 1020px) {
  .site-header {
    position: relative;
    z-index: 80;
  }

  .site-header .nav {
    width: calc(100% - 48px);
    position: relative;
    grid-template-columns: 1fr auto;
    gap: 24px;
  }

  .site-header .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    height: 40px;
    padding: 0 14px;
    border: 1px solid #d9dce2;
    border-radius: 999px;
    background: transparent;
    color: #111;
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
  }

  .site-header .nav-center {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    justify-self: stretch;
    display: grid;
    gap: 12px;
    padding: 10px;
    background: #f7f7f8;
    border: 1px solid #e1e3e7;
    box-shadow: 0 18px 40px rgba(15, 23, 42, .10);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  }

  .site-header .nav-primary-links {
    display: grid;
    gap: 0;
  }

  .site-header .nav-center.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .site-header .nav-primary-link {
    padding: 13px 12px;
    border-radius: 10px;
  }

  .site-header .nav-primary-link:hover,
  .site-header .nav-primary-link[aria-current="page"] {
    background: #eceef2;
  }

  .site-header .nav-primary-link::after {
    display: none;
  }

  .site-header .nav-conversation-cta {
    width: 100%;
    min-height: 46px;
    padding: 0 16px;
    border-radius: 12px;
    text-align: center;
  }
}

@media (max-width: 680px) {
  .site-header {
    height: 72px;
  }

  .site-header .nav {
    width: calc(100% - 32px);
  }

  .site-header .brand {
    font-size: 20px;
  }

  .site-header .brand .mark {
    width: 28px;
    height: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .nav-center {
    transition: none !important;
  }
}

/* RC2.1 Interaction Shell stabilization. Keeps the frozen header geometry. */
.site-header {
  transition: transform .26s cubic-bezier(.2,.7,.2,1);
}

.site-header.is-shell-sticky {
  position: sticky;
  top: 0;
  z-index: 90;
}

.site-header.site-header--internal.is-shell-sticky {
  position: sticky;
  z-index: 90;
}

.site-header.is-scroll-hidden {
  transform: translateY(calc(-100% - 1px));
}

body.nav-open .site-header,
body.inquiry-open .site-header {
  transform: none !important;
}

body.nav-open {
  overflow: hidden;
}

@media (max-width: 1020px) {
  .site-header .nav-center {
    max-height: calc(100dvh - 86px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

@media (max-width: 680px) {
  .site-header .nav-center {
    max-height: calc(100dvh - 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition: none !important;
  }
}