@layer overscan {
/* The annunciator panel. See ov-annunciator.js for the refusal.
 *
 * 🔴 NO STATE RESTS ON ONE CHANNEL. Every state has a fill or border shape, a
 * colour, AND a text tag written by the element. Flashing is the fourth
 * channel for `alert` and is the one reduced motion takes away, which is safe
 * only because the other three are still there: ALERT and ACK differ in their
 * tag whether or not anything blinks.
 */

ov-annunciator {
  /* Knobs. The tile width is a REAL width, not a percentage: a percentage is
   * a deferral that resolves to nothing under a shrink-wrapping ancestor, and
   * the demo index shrink-wraps its previews. */
  --ov-annunciator-cols: 4;
  --ov-annunciator-tile-w: 12ch;
  --ov-annunciator-period: 800ms;

  display: inline-grid;
  gap: var(--ov-gap, 8px);
  font-family: var(--ov-font-mono);
  color: var(--ov-ink);
}

.ov-annunciator__grid {
  display: grid;
  grid-template-columns: repeat(var(--ov-annunciator-cols), minmax(var(--ov-annunciator-tile-w), 1fr));
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ov-annunciator__tile {
  position: relative;
  display: grid;
  place-items: center;
  min-block-size: 3.4em;
  padding: 12px 8px 6px;
  border: var(--ov-rule, 1px) solid var(--ov-line);
  background: var(--ov-panel);
  /* Dark but legible. A real lamp is unreadable when off; a screen has no
   * excuse, and an operator should be able to read the layout at rest.
   * ⚠️ --ov-faint, not --ov-line-strong: line-strong on panel is 3.1:1 in
   * antiseptic, under 4.5 at this size. faint clears it in all ten themes. */
  color: var(--ov-faint);
  font-size: 11px;
  letter-spacing: .08em;
  text-align: center;
  text-transform: uppercase;
}

.ov-annunciator__tag {
  position: absolute;
  inset-block-start: 3px;
  inset-inline-end: 5px;
  font-size: 8.5px;
  letter-spacing: .1em;
  line-height: 1;
}

/* alert: live and nobody has seen it. Filled and flashing, in phase with
 * every other alert tile (the element offsets each animation by one clock). */
.ov-annunciator__tile[data-ov-state="alert"] {
  border-color: var(--ov-alarm);
  background: var(--ov-alarm);
  color: var(--ov-field);
  animation: ov-annunciator-flash var(--ov-annunciator-period) steps(1, end) infinite;
}

/* acked: live, seen. Filled and steady. */
.ov-annunciator__tile[data-ov-state="acked"] {
  border-color: var(--ov-alarm);
  background: var(--ov-alarm);
  color: var(--ov-field);
}

/* latched: tripped, recovered, never seen. The shape differs from live
 * (hatched outline, not a fill) so the two cannot be confused at a glance,
 * which is the whole refusal.
 * ⚠️ The hatch is 14%, not more: the label is --ov-alarm ON the hatch, and at
 * 24% antiseptic fell to 4.3:1. 14% is 4.9:1 at worst across all ten themes. */
.ov-annunciator__tile[data-ov-state="latched"] {
  border: 2px solid var(--ov-alarm);
  background:
    repeating-linear-gradient(135deg,
      color-mix(in srgb, var(--ov-alarm) 14%, transparent) 0 3px,
      transparent 3px 8px),
    var(--ov-panel);
  color: var(--ov-alarm);
}

/* unknown: the kit's `unknown` refusal. Never the dark normal tile, because
 * a dark tile claims the condition is absent and nobody measured that. */
.ov-annunciator__tile[data-ov-state="unknown"] {
  border: var(--ov-rule, 1px) dashed var(--ov-faint);
  background: var(--ov-field);
  color: var(--ov-faint);
}
.ov-annunciator__tile[data-ov-state="unknown"][data-ov-latched] {
  border-color: var(--ov-alarm);
}
.ov-annunciator__tile[data-ov-state="unknown"] .ov-annunciator__tag,
.ov-annunciator__tile[data-ov-latched] .ov-annunciator__tag { color: var(--ov-alarm); }

/* stale: shown, and marked by its tag, as everywhere else in the kit. Not
 * dimmed: the at-rest label is already at the contrast floor. */

.ov-annunciator__tile[data-ov-retired] { outline: 1px dotted var(--ov-alarm); outline-offset: 2px; }

/* Shelved: still on the panel, still saying its state, but not flashing and
 * not lighting the master. A dotted edge and a faint wash, never hidden. */
.ov-annunciator__tile[data-ov-shelved] {
  animation: none;
  outline: 1px dotted var(--ov-faint);
  outline-offset: -4px;
}
.ov-annunciator__tile[data-ov-shelved][data-ov-state="alert"],
.ov-annunciator__tile[data-ov-shelved][data-ov-state="acked"] {
  background: color-mix(in srgb, var(--ov-alarm) 30%, var(--ov-panel));
  color: var(--ov-ink);
}
.ov-annunciator__tile[data-ov-shelved] .ov-annunciator__tag { color: var(--ov-faint); }

.ov-annunciator__shelve {
  position: absolute;
  inset-block-end: 2px;
  inset-inline-start: 4px;
  padding: 0 3px;
  border: 1px solid currentColor;
  background: none;
  color: inherit;
  font: inherit;
  font-size: 7.5px;
  letter-spacing: .1em;
  opacity: .75;
  cursor: pointer;
}
.ov-annunciator__shelve:focus-visible { outline: 2px solid var(--ov-ink); opacity: 1; }

@keyframes ov-annunciator-flash {
  50% { background: var(--ov-panel); color: var(--ov-alarm); }
}

.ov-annunciator__master {
  display: inline-flex;
  justify-content: space-between;
  gap: 1.5ch;
  padding: 8px 12px;
  border: 2px solid var(--ov-line-strong);
  background: var(--ov-panel);
  color: var(--ov-faint);
  font: inherit;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
}
ov-annunciator[data-ov-master="lit"] .ov-annunciator__master {
  border-color: var(--ov-alarm);
  background: var(--ov-alarm);
  color: var(--ov-field);
  animation: ov-annunciator-flash var(--ov-annunciator-period) steps(1, end) infinite;
}
ov-annunciator[data-ov-master="dark"] .ov-annunciator__master { cursor: default; }
.ov-annunciator__master:focus-visible { outline: 2px solid var(--ov-ink); outline-offset: 2px; }

.ov-annunciator__note {
  margin: 0;
  color: var(--ov-alarm);
  font-size: 10px;
  letter-spacing: .06em;
}

.ov-annunciator__say {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  /* Nothing blinks. ALERT vs ACK is still carried by the tag, and the alert
   * tile gets a heavier edge so the difference is not text alone. */
  .ov-annunciator__tile[data-ov-state="alert"],
  ov-annunciator[data-ov-master="lit"] .ov-annunciator__master { animation: none; }
  .ov-annunciator__tile[data-ov-state="alert"] { box-shadow: inset 0 0 0 3px var(--ov-field); }
}
}