/* The corporate header's menus (src/site-menu.ts, src/corporate-site.ts):
   Topics and About drop down from the bar on wide screens; below 1040 px the
   Menu sheet holds the same groups. Loaded after styles.css by the Worker. */

/* Corporate pages paint paper only. The Worker links publication.css just
   before this file (the reader pages need its tokens), and its first rule
   declares `color-scheme: light dark` on :root; the same declaration here,
   later in the cascade, keeps the canvas, scrollbars and native controls
   light. Story, card and list pages never load this file. */
:root {
  color-scheme: light;
}

nav.site-nav {
  gap: 1.2rem;
}

/* ---------- Desktop dropdowns ---------- */
.nav-menu {
  position: relative;
}
.nav-menu summary {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 44px;
  padding: 0.5rem 0;
  color: var(--balise-evergreen-soft);
  font-size: 0.93rem;
  font-weight: 550;
  white-space: nowrap;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.nav-menu summary::-webkit-details-marker {
  display: none;
}
/* The same small triangle the language pill wears. */
.nav-menu summary::after {
  content: "▾";
  font-size: 0.8em;
}
.nav-menu[open] summary::after {
  content: "▴";
}
.nav-menu summary:hover,
.nav-menu[open] summary,
.nav-menu:has(a[aria-current="page"]) summary {
  color: var(--balise-evergreen);
}
.nav-menu:has(a[aria-current="page"]) summary {
  text-decoration: underline;
  text-decoration-color: var(--balise-gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.35em;
}
.nav-menu-sheet {
  position: absolute;
  top: calc(100% + 0.45rem);
  left: -0.85rem;
  z-index: 30;
  display: grid;
  gap: 0.1rem;
  min-width: 13.5rem;
  padding: 0.45rem;
  border: 1px solid var(--balise-line);
  border-radius: 8px;
  background: var(--balise-paper);
  box-shadow: 0 18px 48px rgba(11, 36, 32, 0.22);
}
.nav-menu-topics .nav-menu-sheet {
  grid-template-columns: repeat(2, minmax(10rem, 1fr));
  column-gap: 0.25rem;
}
nav.primary .nav-menu-sheet a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  color: var(--balise-evergreen);
  font-size: 0.93rem;
  text-decoration: none;
}
nav.primary .nav-menu-sheet a:hover,
nav.primary .nav-menu-sheet a:focus-visible {
  background: var(--balise-paper-raised);
  text-decoration: none;
}
nav.primary .nav-menu-sheet a[aria-current="page"] {
  background: var(--balise-paper-raised);
  font-weight: 750;
  text-decoration: none;
  box-shadow: inset 2px 0 0 var(--balise-gold);
}

/* ---------- Language switcher ---------- */
.site-lang summary {
  gap: 0.35rem;
  color: var(--balise-evergreen);
}
.site-lang .lang-globe {
  flex: 0 0 auto;
}
nav.primary .site-lang .lang-menu-sheet a[aria-current="page"] {
  background: var(--balise-paper-raised);
  box-shadow: inset 2px 0 0 var(--balise-gold);
}

/* ---------- Menu sheet (below 1040 px) ---------- */
.site-nav .mobile-menu-sheet {
  max-height: calc(100dvh - 5.5rem);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.menu-group {
  padding: 0.2rem 0 0.35rem;
  border-bottom: 1px solid var(--balise-line);
}
.menu-group-title {
  margin: 0.45rem 0.75rem 0.1rem;
  color: var(--balise-muted);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.menu-group-links,
.menu-group-reading {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 0.25rem;
}
nav.primary .mobile-menu-sheet .menu-group a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.55rem 0.75rem;
  white-space: normal;
  line-height: 1.25;
  font-size: 0.95rem;
}
nav.primary .mobile-menu-sheet .menu-group a[aria-current="page"] {
  background: var(--balise-paper-raised);
  font-weight: 750;
}
.site-nav .mobile-menu-sheet .lang-menu-row {
  margin-top: 0;
  border-top: 0;
}

@media (max-width: 1040px) {
  nav.primary > .nav-menu {
    display: none;
  }
}

/* A tablet has room for the language pill beside Menu; the sheet then
   drops its own language row. */
@media (min-width: 641px) and (max-width: 1040px) {
  nav.site-nav > .lang-menu {
    display: block;
  }
  nav.site-nav .mobile-menu-sheet .lang-menu-row {
    display: none;
  }
  .site-nav .menu-group-reading {
    border-bottom: 0;
  }
}
:lang(ja) .menu-group-title {
  text-transform: none;
  letter-spacing: 0.04em;
}