/**
 * Assisted-reading exhibition — pause → natural JP → furigana in/out → EN.
 * Enable: exhibitProfile assistedReading + typography mobile-refine
 */

.exhibition-root.is-assisted-reading {
  /* Verse JP — bumped over mobile-refine baseline for artwork legibility */
  --kml-assisted-verse-jp: clamp(2.55rem, 8.8vmin, 5.15rem);
  --kml-assisted-verse-en: var(--kml-size-verse-en-display);
  --kml-assisted-shadow-jp:
    0 1px 3px rgba(0, 0, 0, 0.78),
    0 3px 20px rgba(0, 0, 0, 0.62),
    0 0 36px rgba(0, 0, 0, 0.45);
  --kml-assisted-shadow-en:
    0 1px 3px rgba(0, 0, 0, 0.72),
    0 3px 16px rgba(0, 0, 0, 0.55),
    0 0 28px rgba(0, 0, 0, 0.4);
}

.exhibition-root.is-assisted-reading .exhibition-keyword,
.exhibition-root.is-assisted-reading .exhibition-kanji,
.exhibition-root.is-assisted-reading .exhibition-title {
  display: none !important;
}

.exhibition-root.is-assisted-reading .exhibition-veil {
  opacity: 0 !important;
  pointer-events: none;
}

.exhibition-root.is-assisted-reading.is-initial-black .exhibition-veil {
  opacity: 1 !important;
}

.exhibition-root.is-assisted-reading .exhibition-artwork {
  transition: opacity var(--ex-artwork-arrival, var(--ex-transition, 4s)) ease-in-out;
}

.exhibition-root.is-assisted-reading .exhibition-artwork.is-exhaling {
  transition-duration: var(--ex-transition, 4s);
  transition-timing-function: ease-in-out;
  opacity: 0;
}

.exhibition-root.is-assisted-reading .exhibition-artwork.is-on-top {
  z-index: 2;
}

.exhibition-root.is-assisted-reading .exhibition-notes {
  top: 50%;
  bottom: auto;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(96vw, 48rem);
  min-height: 4rem;
}

/* Beat sequential 40rem notes width so authored lines can stay on two lines */
html.kml-typography-mobile-refine.kml-verse-sequential
  .exhibition-root.is-assisted-reading
  .exhibition-notes {
  width: min(96vw, 52rem);
}

html.kml-typography-mobile-refine.kml-verse-sequential
  .exhibition-root.is-assisted-reading
  .exhibition-verse-jp {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  bottom: auto;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0 clamp(0.5rem, 2vw, 1rem);
  text-align: center;
  transform: translateY(-50%) !important;
  transition: opacity var(--ex-verse-fade, 1s) ease-in-out;
  font-size: var(--kml-assisted-verse-jp);
  font-family: var(--kml-font-heart-verse-jp);
  font-weight: 600;
  line-height: 1.72;
  color: rgba(255, 252, 245, 0.98);
  text-shadow: var(--kml-assisted-shadow-jp);
}

/* English — same centre slot as JP, study-scale legibility (no small reflection tier) */
html.kml-typography-mobile-refine.kml-verse-sequential
  .exhibition-root.is-assisted-reading
  .exhibition-verse-en {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  bottom: auto;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0 clamp(0.75rem, 3vw, 1.5rem);
  text-align: center;
  transform: translateY(-50%) !important;
  font-family: var(--kml-font-heart-voice);
  font-size: var(--kml-assisted-verse-en);
  font-weight: 500;
  font-style: italic;
  line-height: 1.66;
  letter-spacing: 0.02em;
  white-space: pre-line;
  color: var(--kml-color-verse-en);
  text-shadow: var(--kml-assisted-shadow-en);
  opacity: 0;
  transition: opacity var(--ex-verse-fade, 1s) ease-in-out;
}

html.kml-typography-mobile-refine.kml-verse-sequential
  .exhibition-root.is-assisted-reading
  .exhibition-verse-en.is-visible {
  opacity: 1;
}

/* Two-line prose */
html.kml-typography-mobile-refine.kml-verse-authored
  .exhibition-root.is-assisted-reading
  .exhibition-verse-jp.has-authored-lines
  .kml-verse-line {
  display: block;
  /* text-wrap:unset after nowrap resets wrap mode in Chromium (shorthand split) */
  white-space: nowrap;
  text-wrap: nowrap;
}

html.kml-typography-mobile-refine.kml-verse-authored
  .exhibition-root.is-assisted-reading
  .exhibition-verse-jp.has-authored-lines
  .kml-verse-line
  + .kml-verse-line {
  margin-top: 0.42em;
}

html.kml-typography-mobile-refine.kml-verse-authored
  .exhibition-root.is-assisted-reading
  .exhibition-verse-jp.has-authored-lines
  br {
  display: none;
}

/* Furigana */
.exhibition-root.is-assisted-reading .exhibition-verse-jp.show-furigana ruby {
  ruby-position: over;
}

.exhibition-root.is-assisted-reading .exhibition-verse-jp.show-furigana ruby rt {
  font-family: var(--kml-font-heart-verse-jp);
  font-size: 0.46em;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-shadow: var(--kml-assisted-shadow-jp);
  transition: opacity var(--ex-furigana-fade, 2.5s) ease-in-out;
}

.exhibition-root.is-assisted-reading
  .exhibition-verse-jp.show-furigana.is-furigana-hidden
  ruby
  rt,
.exhibition-root.is-assisted-reading
  .exhibition-verse-jp.show-furigana.is-furigana-entering
  ruby
  rt {
  opacity: 0;
}

.exhibition-root.is-assisted-reading
  .exhibition-verse-jp.show-furigana:not(.is-furigana-hidden):not(.is-furigana-fading):not(
    .is-furigana-entering
  )
  ruby
  rt {
  opacity: 1;
}

.exhibition-root.is-assisted-reading .exhibition-verse-jp.is-furigana-fading ruby rt {
  opacity: 0;
}