/**
 * Language-suggestion bar — paper/ink, matched to the theme's switcher register
 * (IBM Plex Sans, 13px, secondary text, animated 1px underline, focus ring).
 * Self-contained: theme :root tokens when present, hard fallbacks otherwise.
 */
.os-langbar {
  --os-paper:     var(--color-paper-top,      oklch(98.5% .003 85));
  --os-ink:       var(--color-ink,            oklch(12% .008 70));
  --os-secondary: var(--color-secondary-text, oklch(48% .005 75));
  --os-hairline:  var(--color-hairline,       oklch(82% .005 80));
  --os-sans:      var(--font-sans, "IBM Plex Sans", sans-serif);
  --os-ease:      var(--ease-out-expo, cubic-bezier(.16, 1, .3, 1));

  position: relative;
  width: 100%;
  background: var(--os-paper);
  border-bottom: 1px solid var(--os-hairline);
  font-family: var(--os-sans);
  -webkit-font-smoothing: antialiased;
}

.os-langbar__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 9px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  line-height: 20px;
}

@media (min-width: 768px) {
  .os-langbar__inner { padding: 9px 8vw; }
}

.os-langbar__msg {
  color: var(--os-secondary);
}

.os-langbar__link {
  color: var(--os-ink);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  margin-right: auto;
}

.os-langbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: 0 100%;
  transition: transform .4s var(--os-ease);
}

.os-langbar__link:hover::after,
.os-langbar__link:focus-visible::after { transform: scaleX(1); }

.os-langbar__close {
  appearance: none;
  -webkit-appearance: none;
  background: none;
  border: 0;
  padding: 0 2px;
  margin: 0;
  cursor: pointer;
  color: var(--os-secondary);
  font-size: 18px;
  line-height: 1;
  flex: 0 0 auto;
}

.os-langbar__link:focus-visible,
.os-langbar__close:focus-visible {
  outline: 1px solid var(--os-secondary);
  outline-offset: 4px;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .os-langbar__link::after { transition: none; }
}

@media (max-width: 480px) {
  .os-langbar__msg { flex: 1; }
}