:root {
  --navigation-height: 82px;
}

html {
  scroll-padding-top: calc(var(--navigation-height) + 16px);
}

html.page-reloading {
  scroll-behavior: auto !important;
}

.site-header {
  position: fixed;
  z-index: 40;
  transition: background-color 180ms ease;
}

.site-header.is-scrolled,
.site-header.menu-open {
  background: var(--forest-dark, #042f2b);
  box-shadow: 0 1px 0 rgba(251, 246, 236, 0.2);
}

.site-header .nav {
  min-height: var(--navigation-height);
}

.nav-brand,
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.nav-toggle,
.nav-home {
  display: none;
}

.site-header a:focus-visible,
.nav-toggle:focus-visible,
.back-to-top:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 4px;
}

.back-to-top {
  position: fixed;
  z-index: 30;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid rgba(251, 246, 236, 0.55);
  border-radius: 24px;
  background: var(--forest-dark, #042f2b);
  color: var(--paper);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(4, 47, 43, 0.18);
}

.back-to-top[hidden],
.nav-toggle[hidden] {
  display: none;
}

@media (max-width: 980px) {
  :root {
    --navigation-height: 70px;
  }

  .site-header .nav {
    gap: 12px;
  }

  .nav-brand {
    white-space: nowrap;
  }

  .has-navigation .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-width: 88px;
    min-height: 44px;
    padding: 8px 12px;
    border: 1px solid rgba(251, 246, 236, 0.6);
    background: transparent;
    color: var(--paper);
    font: inherit;
    font-size: 0.875rem;
    line-height: 1;
    cursor: pointer;
  }

  .nav-toggle svg {
    transition: transform 180ms ease;
  }

  .menu-open .nav-toggle svg {
    transform: rotate(180deg);
  }

  .site-header .nav-links {
    position: absolute;
    top: var(--navigation-height);
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    max-height: calc(100vh - var(--navigation-height) - 16px);
    max-height: calc(100dvh - var(--navigation-height) - 16px);
    overflow-y: auto;
    padding: 12px max(16px, env(safe-area-inset-right)) 18px max(16px, env(safe-area-inset-left));
    background: var(--forest-dark, #042f2b);
    border-bottom: 1px solid rgba(251, 246, 236, 0.3);
  }

  .has-navigation .site-header:not(.menu-open) .nav-links {
    display: none;
  }

  .site-header .nav-links a,
  .site-header .nav-links a:not(.nav-cta) {
    display: flex;
    width: 100%;
    min-height: 44px;
    padding: 12px 14px;
    font-size: 0.875rem;
    line-height: 1.4;
    letter-spacing: 0.035em;
    white-space: normal;
  }

  .site-header .nav-links .nav-cta {
    margin-top: 4px;
    border-color: rgba(251, 246, 236, 0.6);
  }

  .site-header .nav-links a:hover,
  .site-header .nav-links a:focus-visible {
    background: rgba(251, 246, 236, 0.08);
  }

  .site-header .nav-links a:focus-visible {
    outline-offset: -2px;
  }
}

@media (min-width: 981px) {
  .site-header .nav-links .nav-home {
    display: none;
  }
}