/* =========================================================================
   Dichotic Listening and Selection Theories — tool-specific styling
   -------------------------------------------------------------------------
   Shared page furniture comes from components/tool-kit.css. What is specific
   here is the two-stream display, the recognition options and the probe
   chart.

   THE ATTENDED SIDE IS MARKED THREE WAYS
   --------------------------------------
   A heavier border, a filled label reading "ATTEND TO THIS", and a caret
   glyph in that label. None of the three is a hue, so which side is yours
   survives greyscale and forced colours.

   PRESENTATION SAFETY
   -------------------
   Items change once every 800 ms - about 1.25 changes a second, well below
   the three-per-second threshold associated with photosensitive reactions.
   Only the two words change; the panels, their size and their position stay
   put. No CSS animation or transition is used anywhere in this file.
   ---------------------------------------------------------------------- */

/* Absolutely positioned visually-hidden <caption> elements have no positioned
   ancestor inside a scroller, which adds ~30px to the document's scrollable
   width at 320px. Candidate for components/tool-kit.css. */
.table-scroll {
  position: relative;
}

#dichotic .interactive__controls,
#dichotic .interactive__stage {
  min-width: 0;
}

@media (min-width: 52em) {
  #dichotic .interactive__body {
    grid-template-columns: minmax(0, 19rem) minmax(0, 1fr);
  }
}

#dichotic .control + .control {
  margin-top: var(--space-3);
}

/* The "test the sound" button lives inside the audio control rather than in
   a control of its own, so the settings column stays short enough for the
   streams and the response button to share a 768px-tall screen with it. */
#dichotic .control__hint + .button {
  margin-top: var(--space-2);
}

/* The three run buttons share one control block for the same reason. */
.control--buttons {
  display: grid;
  gap: var(--space-2);
}

/* -------------------------------------------------------------------------
   The two streams
   ---------------------------------------------------------------------- */

.streams {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.streams__side {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  min-width: 0;
  min-height: 9.5rem;
  padding: var(--space-3);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background-color: var(--colour-surface);
}

.streams__side[data-attended="yes"] {
  border-width: 3px;
  border-color: var(--colour-accent);
  background-color: var(--colour-accent-soft);
}

.streams__label {
  margin: 0;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  text-align: center;
}

.streams__side[data-attended="yes"] .streams__label {
  color: var(--colour-text);
}

.streams__word {
  margin: 0;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: clamp(1.15rem, 3.6vw, 1.9rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  word-break: break-word;
  color: var(--colour-text);
}

/* The physically marked item in the ignored stream. Heavier, larger and
   underlined - three carriers, none of them a hue. */
.streams__word[data-marked="yes"] {
  font-weight: 800;
  font-size: clamp(1.4rem, 4.4vw, 2.3rem);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.display__caption {
  margin: var(--space-3) 0 0;
  min-height: 2.5rem;
  font-size: var(--text-sm);
  color: var(--colour-text-muted);
  text-align: center;
}

/* -------------------------------------------------------------------------
   Responses
   ---------------------------------------------------------------------- */

.responses {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.response {
  flex: 1 1 11rem;
  min-height: 3.25rem;
  font-size: var(--text-base);
  font-weight: 650;
  transition: background-color 90ms linear, box-shadow 90ms linear;
}

/* Acknowledges that a press was recorded. Colour and an inset ring only, so
   nothing moves and no space is reserved or released - a layout shift here
   would land in the middle of a timed 800 ms item. */
.response[data-registered="yes"] {
  background-color: var(--colour-accent-soft);
  color: var(--colour-accent);
  box-shadow: inset 0 0 0 3px var(--colour-accent);
}

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

@media (forced-colors: active) {
  .response[data-registered="yes"] {
    box-shadow: inset 0 0 0 3px Highlight;
  }
}

.stage__form {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.stage__form > * {
  min-width: 0;
}

.options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: var(--space-2);
}

.options .button {
  min-height: 3rem;
  font-size: var(--text-sm);
  font-weight: 600;
}

/* -------------------------------------------------------------------------
   Probe chart
   -------------------------------------------------------------------------
   Two series - one rule and two rules - distinguished by fill, by a hatch on
   the second, and by the value printed inside or beside each bar.
   ---------------------------------------------------------------------- */

.dichotic-chart {
  max-width: 30rem;
}

.dichotic__bar--one {
  fill: var(--colour-accent);
}

.dichotic__bar--two {
  fill: var(--colour-cognitive);
}

.dichotic__hatch {
  stroke: var(--colour-surface);
  stroke-width: 3;
}

/* -------------------------------------------------------------------------
   Challenge
   ---------------------------------------------------------------------- */

.challenge select {
  width: 100%;
  min-width: 12rem;
  min-height: 2.75rem;
  padding: 0.35rem 0.6rem;
  font: inherit;
  font-size: var(--text-sm);
  color: var(--colour-text);
  background-color: var(--colour-surface-raised);
  border: 1px solid var(--colour-border-strong);
  border-radius: var(--radius-sm);
}

.challenge th[scope="row"] {
  min-width: 16rem;
  font-weight: 400;
}

.challenge__mark {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--colour-text-muted);
}

/* -------------------------------------------------------------------------
   Narrow screens
   ---------------------------------------------------------------------- */

@media (max-width: 26em) {
  .streams {
    gap: var(--space-2);
  }

  .streams__side {
    padding: var(--space-2);
  }
}

/* -------------------------------------------------------------------------
   Forced colours
   ---------------------------------------------------------------------- */

@media (forced-colors: active) {
  .streams__side {
    border: 1px solid CanvasText;
  }

  .streams__side[data-attended="yes"] {
    border: 3px solid Highlight;
  }

  .dichotic__bar--one {
    fill: CanvasText;
  }

  .dichotic__bar--two {
    fill: Highlight;
  }

  .dichotic__hatch {
    stroke: Canvas;
  }

  .challenge select {
    border: 1px solid ButtonText;
  }
}