/* moon-egui — language switcher
 * Shared by index.html, gallery.html and benchmark.html.
 * Every value reads the host page's tokens with a safe fallback, so the
 * control inherits whichever design surface it is dropped into.
 */

/* Wrapper that groups the switcher with the nav CTA. */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 2px;
  background: var(--segment-bg, var(--bg-subtle, #f1f5f9));
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 6px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 0.18s ease;
}

.lang-switch:hover {
  border-color: var(--border-strong, #cbd5e1);
}

.lang-switch:focus-within {
  border-color: var(--brand, #2563eb);
}

.lang-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(50% - 2px);
  height: calc(100% - 4px);
  border-radius: 4px;
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.10);
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
  pointer-events: none;
}

.lang-switch[data-active="1"] .lang-switch-thumb {
  transform: translateX(100%);
}

.lang-switch button {
  position: relative;
  z-index: 1;
  flex: 1 1 0;
  min-width: 44px;
  padding: 3px 8px;
  appearance: none;
  border: 0;
  border-radius: 4px;
  background: transparent;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--text-muted, #64748b);
  text-align: center;
  cursor: pointer;
  transition: color 0.18s ease;
}

.lang-switch button:hover {
  color: var(--text-main, #0f172a);
}

.lang-switch button[aria-pressed="true"] {
  color: var(--text-main, #0f172a);
}

.lang-switch button:focus-visible {
  outline: 2px solid var(--brand, #2563eb);
  outline-offset: 1px;
}

/* Re-inked text on every language swap — a single quiet cross-fade. */
html.i18n-swapping [data-i18n],
html.i18n-swapping [data-i18n-html] {
  opacity: 0.25;
}

[data-i18n],
[data-i18n-html] {
  transition: opacity 0.16s ease;
}

/* Keep the shared navigation bar comfortable now that it carries one more item. */
@media (max-width: 1000px) {
  .nav-menu { gap: 18px; }
  .nav-link { font-size: 13px; }
}

@media (max-width: 880px) {
  .nav-menu { gap: 14px; }
  .nav-actions { gap: 8px; }
  .lang-switch button { min-width: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  .lang-switch-thumb { transition: none; }
  [data-i18n],
  [data-i18n-html] { transition: none; }
}