/* Style 2 — Split Screen Grid navbar */

.site-header--split {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-text);
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header__bar {
  width: 100%;
}

.site-header--split .site-header__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-3);
  min-height: 72px;
}

.site-header--split .site-header__branding {
  justify-self: start;
}

.site-header--split .site-header__nav--center {
  justify-self: center;
}

.site-header--split .site-header__utilities {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.site-header__logo-link::after {
  content: none;
}

.site-header__logo-link:hover {
  color: inherit;
}

.site-header__title-group {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.site-header__logo-mark {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--color-accent-muted), #1f2e24);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.site-header__logo-mark::before {
  content: "";
  position: absolute;
  inset: 28%;
  border-radius: 4px;
  border: 1.5px solid rgba(255, 250, 242, 0.55);
  transform: rotate(45deg);
}

.site-header__title {
  font-family: var(--font-family-serif);
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  white-space: nowrap;
}

.site-header__subtitle {
  font-family: var(--font-family-sans);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-3), 2vw, var(--space-6));
}

.site-header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-block: 0.35rem;
  color: var(--color-text-soft);
  transition: color var(--transition-base);
}

.site-header__nav-link::after {
  height: 2px;
  bottom: -4px;
  background: var(--color-primary);
}

.site-header__nav-link:hover {
  color: var(--color-text);
}

.site-header__utility-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  white-space: nowrap;
}

.site-header__utility-link::after {
  background: var(--color-primary);
}

.site-header__utility-cta {
  padding: 0.55rem 1.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.site-header__utility-cta::after {
  content: none;
}

.site-header__utility-cta:hover {
  color: #fff;
}

.site-header__nav-link--active {
  color: var(--color-primary-strong);
}

.site-header__nav-link--active::after {
  width: 100%;
}

/* Offset fixed header on pages with split nav */
body:has(.site-header--split) main {
  padding-top: 72px;
}

@media (max-width: 1023px) {
  .site-header--split .site-header__inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand toggle"
      "nav nav"
      "utils utils";
  }

  .site-header--split .site-header__branding {
    grid-area: brand;
  }

  .nav-toggle {
    grid-area: toggle;
    justify-self: end;
  }

  .site-header--split .site-header__nav--center {
    grid-area: nav;
    justify-self: stretch;
  }

  .site-header--split .site-header__utilities {
    grid-area: utils;
    justify-self: stretch;
    justify-content: center;
    padding-bottom: var(--space-2);
  }

  .site-header--split .site-header__nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .site-header--nav-open.site-header--split .site-header__nav {
    max-height: 320px;
  }

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

  .site-header:not(.site-header--nav-open).site-header--split .site-header__utilities {
    display: none;
  }

  .site-header--nav-open.site-header--split .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3) 0 var(--space-2);
    gap: var(--space-1);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-2) 0;
  }

  .site-header__subtitle {
    display: none;
  }
}

@media (max-width: 599px) {
  .site-header__utility-link {
    display: none;
  }

  .site-header--split .site-header__utilities .site-header__utility-cta {
    width: 100%;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .site-header__subtitle {
    display: block;
  }
}

.nav-toggle {
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-text);
  background: var(--color-surface);
  box-shadow: 3px 3px 0 var(--color-text);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-toggle:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--color-text);
}

.nav-toggle:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--color-text);
}

.site-header--nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header--nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header--nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}