/*
 * a11y.css — accessibility baseline for the qte77 theme control.
 * Reference impl: analyze-stock-kpi (decision D3). Load after eyerest.css.
 */

/* Screen-reader-only: the live-region announce text is visually hidden but read aloud. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/*
 * Width-sizer: reserve the widest label ("System") so cycling System↔Light↔Dark never
 * reflows the toolbar (no jitter). The invisible ::before sets the box width; the visible
 * label sits in normal flow.
 */
#theme-toggle .theme-label {
  display: inline-block;
  text-align: left;
}
#theme-toggle .theme-label::before {
  content: "System"; /* keep in sync with WIDEST_LABEL in theme.js */
  display: block;
  height: 0;
  overflow: hidden;
  visibility: hidden;
}

/* Visible focus — never rely on color alone. */
#theme-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Honor reduced-motion globally (paperverse #77). */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}