/* ══════════════════════════════════════════════════════════════════════
   OWLMARK — ACCESSIBILITY
   By Mourad Mekki

   None of this changes how OwlMark looks to a teacher using a mouse. It
   changes what happens when they use a keyboard, or cannot see a subtle
   gold ring, or have asked their system to stop moving things.
   ══════════════════════════════════════════════════════════════════════ */

/* Announced, never seen. */
.om-sr-only {
  position: absolute !important;
  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;
}

/* ── SKIP LINK ─────────────────────────────────────────────────────────
   Off screen until focused. Without it, reaching the certificate means
   tabbing through the entire toolbar and sidebar, every time. */
.om-skip {
  position: fixed;
  top: 8px; left: 50%;
  transform: translate(-50%, -160%);
  z-index: 10000;
  padding: 11px 20px;
  border-radius: 0 0 10px 10px;
  background: linear-gradient(160deg, var(--gel-gold-a, #fff3d2), var(--gel-gold-b, #ffd98a));
  border: 1px solid var(--gel-gold-rim, #d9a532);
  color: var(--gel-gold-ink, #5c4413);
  font-family: 'Cinzel', serif;
  font-size: 12px; letter-spacing: .6px;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(43, 39, 64, .25);
  transition: transform .18s cubic-bezier(.2, .8, .3, 1);
}
.om-skip:focus {
  transform: translate(-50%, 0);
  outline: 2px solid var(--gel-gold-ink, #5c4413);
  outline-offset: 2px;
}

/* ── FOCUS ─────────────────────────────────────────────────────────────
   A visible focus ring on everything that can take focus. `:focus-visible`
   so a mouse user never sees it — the ring appears for the keyboard, which
   is who it is for. */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible,
[role="button"]:focus-visible,
[role="tab"]:focus-visible {
  outline: 2px solid var(--gel-gold-rim, #c9973d);
  outline-offset: 2px;
  border-radius: 4px;
}

/* The certificate is one big focus target. It needs a ring that reads as
   "you are here" without covering the artwork. */
#certSheet .certificate:focus-visible {
  outline: 3px solid var(--gel-gold-rim, #c9973d);
  outline-offset: 4px;
}

/* A line being edited by keyboard must be obvious. */
.ce-field:focus-visible {
  outline: 2px solid var(--gel-gold-rim, #c9973d);
  outline-offset: 3px;
  border-radius: 3px;
  background: rgba(201, 151, 61, .07);
}

/* ── HIGH-CONTRAST FOCUS ───────────────────────────────────────────────
   For anyone who cannot pick a thin gold ring out of a gold certificate. */
body.om-hc-focus *:focus-visible {
  outline: 4px solid #000 !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 8px #ffe066 !important;
  border-radius: 3px;
}

/* ── DISABLED ──────────────────────────────────────────────────────────
   Greyed-out is not enough on a dark UI — it reads as "styled", not
   "unavailable". Make it unambiguous, and stop it swallowing clicks. */
[disabled],
[aria-disabled="true"] {
  opacity: .45 !important;
  cursor: not-allowed !important;
  filter: grayscale(.5);
}
[disabled]:hover,
[aria-disabled="true"]:hover {
  transform: none !important;
  box-shadow: none !important;
}

/* ── TABS ──────────────────────────────────────────────────────────── */
[role="tab"][aria-selected="true"] { font-weight: 700; }

/* ── REDUCED MOTION ────────────────────────────────────────────────────
   The app has motion in a dozen places across six stylesheets. Rather than
   chase each one, honour the request globally — then let the individual
   sheets keep their own more careful overrides.

   Motion is not removed entirely (the brief asks that it isn't); it is cut
   to something that cannot trigger anyone. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .om-skip { transition: none !important; }
}

/* ── FORCED COLOURS (Windows high-contrast mode) ──────────────────────── */
@media (forced-colors: active) {
  .om-btn, .om-chip, .tb-btn, .pg-thumb {
    border: 1px solid ButtonBorder;
  }
  *:focus-visible {
    outline: 3px solid Highlight !important;
    outline-offset: 2px !important;
  }
}

@media print {
  .om-skip, .om-sr-only { display: none !important; }
  .ce-field:focus-visible,
  #certSheet .certificate:focus-visible { outline: none !important; background: none !important; }
}