/**
 * MASTER NAVIGATION — isolated component
 * Scope: .site-header and descendants ONLY.
 * Do not style body / main / h1–h6 / .container / generic a|ul|nav|header.
 */

:root {
  --site-nav-editorial: 70rem;
  --site-nav-gutter: clamp(1.25rem, 3.5vw, 2.5rem);
  --site-nav-meta: 0.6875rem;
  --site-nav-height: 3.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--site-nav-height);
  max-width: calc(var(--site-nav-editorial) + 2 * var(--site-nav-gutter));
  margin-inline: auto;
  padding-inline: var(--site-nav-gutter);
  box-sizing: border-box;
  position: relative;
}

.site-header .site-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.site-header .site-logo span {
  font-family: var(--font-en);
  font-size: var(--site-nav-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* Visually hide checkbox on all viewports — never show UA control */
.site-header .site-nav__toggle {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.site-header .site-nav__burger {
  display: none;
  font-family: var(--font-en);
  font-size: var(--site-nav-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
  line-height: 1;
}

.site-header .site-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.85rem 1.35rem;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Specificity above any legacy body.page-inner .site-header a */
body .site-header .site-nav__link {
  font-family: var(--font-en);
  font-size: var(--site-nav-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-muted);
  line-height: 1.2;
}

body .site-header .site-nav__link:hover {
  color: var(--color-text);
}

/* Desktop: force single-row nav; never show Menu */
@media (min-width: 52.01rem) {
  .site-header .site-nav__burger {
    display: none !important;
  }

  .site-header .site-nav {
    display: flex !important;
    position: static;
    flex-direction: row;
    flex-wrap: nowrap;
    background: transparent;
    border: 0;
    padding: 0;
  }

  .site-header .site-nav__link {
    display: inline;
    width: auto;
    padding: 0;
    border: 0;
  }
}

@media (max-width: 52rem) {
  .site-header .site-nav__burger {
    display: inline-block;
  }

  .site-header .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: 0;
    padding: 0.5rem var(--site-nav-gutter) 1rem;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }

  .site-header .site-nav__link {
    display: block;
    width: 100%;
    padding: 0.7rem 0;
    border-top: 1px solid var(--color-border);
  }

  .site-header .site-nav__toggle:checked ~ .site-nav {
    display: flex;
  }

  .site-header .site-nav__toggle:focus-visible + .site-nav__burger,
  .site-header .site-nav__burger:focus-visible {
    outline: 1px solid var(--color-border);
    outline-offset: 0.25rem;
  }
}