/* Language dropdown for the top-right of the nav (issue #52).
   Scoped to .lang* so it cannot collide with the site's own classes. The control
   is a real <details> element: it opens and closes without JS, so the menu works
   even if the script that swaps languages fails to load, and it is keyboard
   operable and announced as a disclosure by assistive tech for free. */

.lang { position: relative; flex: 0 0 auto; }

.lang summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 8px;
  cursor: pointer;
  color: var(--mist);
  font-size: .85rem;
  white-space: nowrap;
  border-radius: 8px;
  transition: color .25s;
}
.lang summary::-webkit-details-marker { display: none; }
.lang summary:hover,
.lang[open] summary { color: var(--paper); }
.lang .globe { width: 17px; height: 17px; flex: 0 0 auto; }
.lang .caret { width: 9px; height: 9px; transition: transform .25s; }
.lang[open] .caret { transform: rotate(180deg); }

.lang .lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 208px;
  padding: 6px;
  margin: 0;
  list-style: none;
  background: rgba(17, 23, 41, .98);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45);
  z-index: 60;
}

.lang .lang-menu a {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 8px;
  color: var(--mist);
  text-decoration: none;
  font-size: .9rem;
  white-space: nowrap;
}
.lang .lang-menu a:hover { background: rgba(255, 255, 255, .06); color: var(--paper); }
.lang .lang-menu a[aria-current="true"] { color: var(--gold); }
.lang .lang-menu a[aria-current="true"]::after { content: "✓"; margin-left: auto; font-size: .8rem; }

/* The flag is drawn as a small round token. Emoji flags are tiny and unsupported
   on Windows, so this is a deliberate, readable chip rather than the raw glyph. */
.lang .flag {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 16px;
  border-radius: 3px;
  font-size: 13px;
  line-height: 1;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .25);
}

/* On phones the menu would run off the right edge under the 44px trigger; pin it
   to the viewport instead so the names are never clipped. */
@media (max-width: 560px) {
  .lang .lang-menu { position: fixed; right: 12px; left: 12px; top: 62px; min-width: 0; }
}