/* Header language menu: native <details>, loaded after site.css on every page. */

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* Brand | nav | menu: the menu always ends the first row (logical end, so RTL mirrors it). */
.site-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "brand nav lang";
  align-items: center;
  column-gap: 16px;
  position: relative;
}
.site-header .brand { grid-area: brand; }
.site-header .site-nav { grid-area: nav; flex-wrap: wrap; justify-content: flex-end; column-gap: 18px; row-gap: 4px; }
.lang-menu { grid-area: lang; position: relative; }

.lang-menu__btn {
  display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 12px;
  font-size: 15px; font-weight: 700; color: var(--ink); white-space: nowrap;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  cursor: pointer; list-style: none; user-select: none;
}
.lang-menu__btn::-webkit-details-marker { display: none; }
.lang-menu__btn:hover, .lang-menu[open] .lang-menu__btn { border-color: var(--ink-soft); }
.lang-menu__btn:focus-visible { outline: 3px solid var(--coral); outline-offset: 2px; }
.lang-menu__short { display: none; }
.lang-menu__caret { transition: transform 0.2s; }
.lang-menu[open] .lang-menu__caret { transform: rotate(180deg); }

.lang-menu__list {
  position: absolute; top: calc(100% + 8px); inset-inline-end: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px;
  width: max-content; margin: 0; padding: 8px; list-style: none;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-small);
  box-shadow: var(--shadow);
}
.lang-menu__list a {
  display: block; padding: 10px 14px; color: var(--ink); white-space: nowrap;
  text-decoration: none; border-radius: 8px;
}
.lang-menu__list a:hover { background: var(--paper-sunk); color: var(--ink); }
.lang-menu__list a[aria-current] {
  font-weight: 800; background: var(--paper-sunk);
  border-inline-start: 3px solid var(--coral);
}

/* Narrow: nav drops to a second row, the menu shows its short name and opens full width. */
@media (max-width: 720px) {
  .site-header { grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "brand lang" "nav nav"; row-gap: 4px; }
  .site-header .site-nav { justify-content: flex-start; column-gap: 14px; }
  .lang-menu { position: static; justify-self: end; }
  .lang-menu__btn { gap: 5px; padding: 0 10px; }
  .lang-menu__name {
    position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap;
  }
  .lang-menu__short { display: inline; }
  .lang-menu__list {
    top: 100%; inset-inline: 0; width: auto; padding: 8px 12px 12px;
    border-inline: 0; border-radius: 0;
  }
  .lang-menu__list a { padding: 12px 14px; white-space: normal; overflow-wrap: anywhere; }
}

@media (prefers-reduced-motion: reduce) {
  .lang-menu__caret { transition: none; }
}