:root {
  --kanji-reading-modal-max-width: 760px;
  --kanji-reading-modal-max-height: 84dvh;
  --kanji-reading-modal-padding: 1em;
  --kanji-reading-modal-edge-gutter: var(--kanji-reading-modal-padding);
  --kanji-reading-title-pill-size: 64px;
  --kanji-reading-title-pill-glyph-size: 2rem;
  --kanji-reading-subtitle-size: var(--16px);
  --kanji-reading-empty-size: 0.95rem;
  --kanji-sentences-control-size: 38px;
  --kanji-sentences-control-gap: 8px;
  --kanji-sentences-control-step: calc(
    var(--kanji-sentences-control-size) + var(--kanji-sentences-control-gap)
  );
  --z-index-kanji-sentences-controls-container: calc(var(--z-base) + 10);

  /* Overriding common variables from buttons.css */
  --modal-close-size: var(--kanji-sentences-control-size);
  --kanji-sentences-svg-icon-size: var(--28px);
}

.kanji-reading-modal {
  position: relative;
  width: 100%;
  max-width: var(--kanji-reading-modal-max-width);
  max-height: var(--kanji-reading-modal-max-height);
  padding: var(--kanji-reading-modal-padding);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow: hidden;
}

.kanji-reading-overlay {
  overscroll-behavior: contain;
}

/*
 * Keep the close button aligned with the modal
 * content edge and above all modal-local controls.
 */
.kanji-reading-close {
  top: var(--kanji-reading-modal-edge-gutter);
  right: var(--kanji-reading-modal-edge-gutter);
  width: var(--kanji-sentences-control-size);
  height: var(--kanji-sentences-control-size);
  min-width: var(--kanji-sentences-control-size);
  min-height: var(--kanji-sentences-control-size);
  box-sizing: border-box;
  padding: 0;
  z-index: calc(var(--z-index-kanji-sentences-controls-container) + 5);
}

/*
 * The modal content itself does not scroll.
 * The sentence viewport inside it is the only scroll container.
 */
.kanji-reading-modal-content {
  flex: 1;
  min-height: 0;
  display: flex;
  overflow: hidden;
}

.kanji-reading-modal-content::-webkit-scrollbar {
  display: none;
}

.kanji-reading-modal-layout {
  width: 100%;
  min-height: 0;
  display: flex;
  flex: 1;
  flex-direction: column;
}

/*
 * Fixed modal chrome.
 * Header and controls remain stable while only the sentence viewport scrolls.
 */
.kanji-reading-modal-chrome {
  position: relative;
  flex-shrink: 0;
  z-index: calc(var(--z-base) + 2);
  margin-bottom: 0.85em;
}

/*
 * Header belongs at the top-left.
 * Right padding prevents long subtitle text from running under the close button.
 */
.kanji-reading-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45em;
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0 calc(var(--modal-close-size) + 0.9em) 0 0;
}

.kanji-reading-title {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  margin: 0;
  padding: 0;
  line-height: 1;
}

/*
 * Keep the reused kanji pill square.
 */
.kanji-reading-title .kanji-pill {
  width: var(--kanji-reading-title-pill-size);
  height: var(--kanji-reading-title-pill-size);
  min-width: var(--kanji-reading-title-pill-size);
  min-height: var(--kanji-reading-title-pill-size);
  border: var(--border-default-light-theme);
  background-color: var(--color-light-theme-surface);
  aspect-ratio: 1;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kanji-reading-title .kanji-pill:focus-visible {
  outline: none;
}

.dark-mode .kanji-reading-title .kanji-pill {
  border: var(--border-default-dark-theme);
  background-color: var(--color-dark-theme-surface);
}

.dark-mode .kanji-reading-title .kanji-pill-glyph {
  color: var(--color-dark-theme-text-default);
}

.kanji-reading-title .kanji-pill:active {
  box-shadow: var(--shadow-light-strong);
  background-color: var(--color-light-theme-sunken);
  border-color: var(--color-light-theme-accent);
}

.dark-mode .kanji-reading-title .kanji-pill:active {
  border-color: var(--color-dark-theme-accent);
  box-shadow: var(--shadow-dark-strong);
  background-color: var(--color-dark-theme-surface);
}

.kanji-reading-title .kanji-pill-glyph {
  font-size: var(--kanji-reading-title-pill-glyph-size);
  line-height: 1;
}

.kanji-reading-subtitle,
.kanji-reading-empty {
  color: var(--color-light-theme-text-default);
}

.kanji-reading-subtitle {
  max-width: min(48ch, 100%);
  margin: 0;
  font-size: var(--kanji-reading-subtitle-size);
  font-weight: 600;
  line-height: 1.45;
}

.kanji-reading-empty {
  margin: 0;
  font-size: var(--kanji-reading-empty-size);
  line-height: 1.6;
}

.kanji-reading-sentence-viewport {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.kanji-reading-sentence-viewport::-webkit-scrollbar {
  display: none;
}

.kanji-specific-sentences {
  margin: 0;
}

.kanji-specific-sentences > li:not(.sentence-translation):last-of-type {
  margin-bottom: 0;
}

.dark-mode .kanji-reading-subtitle,
.dark-mode .kanji-reading-empty {
  color: var(--color-dark-theme-text-default);
}

/*
 * Modal-local sentence controls.
 *
 * This is a reserved toolbar row below the header and above the scrollable
 * sentence viewport. The gear is right-aligned with the close button/content
 * edge. Expanded controls slide right-to-left.
 */
.kanji-sentences-controls {
  display: block;
}

/*
 * Full-width control lane.
 *
 * The row itself spans the modal content width so the gear can anchor to the
 * same right edge as the close button and sentence cards. The hidden controls
 * still slide left from the gear by using right-offsets.
 */
.kanji-sentences-controls.controls-container {
  position: relative;
  align-self: stretch;
  width: 100%;
  max-width: 100%;
  height: var(--kanji-sentences-control-size);
  inset: auto;
  z-index: calc(var(--z-base) + 10);
  margin: 0.75em 0 0;
  overflow: visible;
}

.kanji-sentences-controls .control-btn {
  position: absolute;
  top: 0;
  left: 0;
  right: auto;
  width: var(--kanji-sentences-control-size);
  height: var(--kanji-sentences-control-size);
  min-width: var(--kanji-sentences-control-size);
  min-height: var(--kanji-sentences-control-size);
}

.kanji-sentences-controls .controls-expander {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
  transform: none;
  z-index: calc(var(--z-base) + 2);
}

.kanji-sentences-controls button.furigana-toggle,
.kanji-sentences-controls button.kanji-toggle,
.kanji-sentences-controls button.font-size-toggle {
  top: 0;
  left: 0;
  right: auto;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transform: translateX(8px) scale(0.96);
  transition:
    right var(--transition-normal),
    opacity var(--transition-normal),
    visibility 0s linear var(--transition-normal),
    transform var(--transition-normal);
}

.kanji-sentences-controls.expanded button.furigana-toggle,
.kanji-sentences-controls.expanded button.kanji-toggle,
.kanji-sentences-controls.expanded button.font-size-toggle {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
  transform: translateX(0) scale(1);
  transition-delay: 0s;
}

.kanji-sentences-controls .gear-icon,
.kanji-sentences-controls .font-size-icon {
  width: var(--kanji-sentences-svg-icon-size);
  height: var(--kanji-sentences-svg-icon-size);
}

/*
 * DOM order is furigana, kanji, font-size, gear.
 * Visual expanded order from left to right becomes:
 * gear, font-size, kanji, furigana.
 */
.kanji-sentences-controls.expanded button.font-size-toggle {
  left: var(--kanji-sentences-control-step);
  top: 0;
  right: auto;
}

.kanji-sentences-controls.expanded button.kanji-toggle {
  left: calc(var(--kanji-sentences-control-step) * 2);
  top: 0;
  right: auto;
}

.kanji-sentences-controls.expanded button.furigana-toggle {
  left: calc(var(--kanji-sentences-control-step) * 3);
  top: 0;
  right: auto;
}

.kanji-sentences-controls .control-btn[aria-pressed="true"] {
  border-color: var(--color-light-theme-accent);
  background-color: var(--color-light-theme-sunken);
  box-shadow: var(--shadow-light-strong);
}

.dark-mode .kanji-sentences-controls .control-btn[aria-pressed="true"] {
  border-color: var(--color-dark-theme-accent);
  background-color: var(--color-dark-theme-surface);
  box-shadow: var(--shadow-dark-strong);
}

.kanji-sentences-controls .kanji-toggle,
.kanji-sentences-controls .furigana-toggle,
.kanji-sentences-controls .font-size-toggle {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

@media (hover: hover) {
  .kanji-reading-title .kanji-pill:hover {
    box-shadow: var(--shadow-light-strong);
    background-color: var(--color-light-theme-sunken);
    border-color: var(--color-light-theme-accent);
  }

  .dark-mode .kanji-reading-title .kanji-pill:hover {
    border-color: var(--color-dark-theme-accent);
    box-shadow: var(--shadow-dark-strong);
    background-color: var(--color-dark-theme-surface);
  }
}

/* Mobile portrait */
@media (max-width: 768px) and (orientation: portrait) {
  :root {
    --kanji-reading-modal-max-width: 94vw;
    --kanji-reading-modal-max-height: calc(
      90dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 12px
    );
    --kanji-reading-modal-padding: 0.85em;
    --kanji-reading-title-pill-size: 56px;
    --kanji-reading-title-pill-glyph-size: calc(var(--30px) + var(--12px));
    --kanji-reading-subtitle-size: var(--14px);
    --kanji-sentences-control-size: 36px;
    --kanji-sentences-control-gap: 7px;
    --modal-close-size: var(--kanji-sentences-control-size);
    --kanji-sentences-svg-icon-size: var(--27px);
  }

  .kanji-reading-overlay {
    padding: calc(env(safe-area-inset-top) + 10px) 8px
      calc(env(safe-area-inset-bottom) + 10px);
  }

  .kanji-sentences-controls.controls-container {
    margin-top: 0.7em;
  }

  .kanji-sentences-controls .kanji-toggle,
  .kanji-sentences-controls .furigana-toggle,
  .kanji-sentences-controls .font-size-toggle {
    font-size: 1.15rem;
  }
}

/* Mobile landscape */
@media (orientation: landscape) and (max-width: 1024px) and (max-height: 600px) {
  :root {
    --kanji-reading-modal-max-width: 94vw;
    --kanji-reading-modal-max-height: 88dvh;
    --kanji-reading-modal-padding: 0.65em;
    --kanji-reading-title-pill-size: 46px;
    --kanji-reading-title-pill-glyph-size: var(--28px);
    --kanji-reading-subtitle-size: var(--16px);
    --kanji-sentences-control-size: 34px;
    --kanji-sentences-control-gap: 7px;
    --kanji-reading-landscape-rail-width: 44px;
    --modal-close-size: var(--kanji-sentences-control-size);
    --kanji-sentences-svg-icon-size: var(--25px);
  }

  .kanji-reading-overlay {
    padding: calc(env(safe-area-inset-top) + 8px)
      calc(env(safe-area-inset-right) + 10px)
      calc(env(safe-area-inset-bottom) + 8px)
      calc(env(safe-area-inset-left) + 10px);
  }

  .kanji-reading-modal {
    width: min(var(--kanji-reading-modal-max-width), 960px);
  }

  .kanji-reading-modal-layout {
    display: grid;
    grid-template-columns: var(--kanji-reading-landscape-rail-width) minmax(
        0,
        1fr
      );
    grid-template-rows: auto minmax(0, 1fr);
    gap: 0.55em 0.75em;
    min-height: 0;
  }

  .kanji-reading-modal-chrome {
    display: contents;
    margin-bottom: 0;
  }

  .kanji-reading-header {
    grid-column: 1 / -1;
    grid-row: 1;
    flex-direction: row;
    align-items: center;
    gap: 0.6em;
    min-width: 0;
    padding-right: calc(var(--modal-close-size) + 0.7em);
  }

  .kanji-reading-title {
    flex: 0 0 auto;
  }

  .kanji-reading-title .kanji-pill {
    width: var(--kanji-reading-title-pill-size);
    height: var(--kanji-reading-title-pill-size);
    min-width: var(--kanji-reading-title-pill-size);
    min-height: var(--kanji-reading-title-pill-size);
  }

  .kanji-reading-title .kanji-pill-glyph {
    font-size: var(--kanji-reading-title-pill-glyph-size);
  }

  .kanji-reading-subtitle {
    min-width: 0;
    max-width: none;
    font-size: var(--kanji-reading-subtitle-size);
    line-height: 1.25;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .kanji-sentences-controls.controls-container {
    grid-column: 1;
    grid-row: 2;
    align-self: start;
    justify-self: stretch;
    display: flex;
    flex-direction: column;
    gap: 0.45em;
    width: 100%;
    height: auto;
    margin: 0;
    overflow: visible;
  }

  .kanji-sentences-controls .control-btn,
  .kanji-sentences-controls button.furigana-toggle,
  .kanji-sentences-controls button.kanji-toggle,
  .kanji-sentences-controls button.font-size-toggle,
  .kanji-sentences-controls.expanded button.furigana-toggle,
  .kanji-sentences-controls.expanded button.kanji-toggle,
  .kanji-sentences-controls.expanded button.font-size-toggle {
    position: static;
    inset: auto;
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
    transform: none;
    transition: none;
  }

  .kanji-sentences-controls .controls-expander {
    display: inline-flex;
    order: 0;
  }

  .kanji-sentences-controls .font-size-toggle,
  .kanji-sentences-controls.expanded button.font-size-toggle {
    order: 1;
  }

  .kanji-sentences-controls .kanji-toggle,
  .kanji-sentences-controls.expanded button.kanji-toggle {
    order: 2;
  }

  .kanji-sentences-controls .furigana-toggle,
  .kanji-sentences-controls.expanded button.furigana-toggle {
    order: 3;
  }

  .kanji-sentences-controls .kanji-toggle,
  .kanji-sentences-controls .furigana-toggle,
  .kanji-sentences-controls .font-size-toggle {
    font-size: 1.05rem;
  }

  .kanji-reading-sentence-viewport {
    grid-column: 2;
    grid-row: 2;
    min-height: 0;
    padding-right: 0.1em;
  }

  .kanji-specific-sentences > li:not(.sentence-translation) {
    padding: 0.55em;
    margin-bottom: 0.65em;
  }

  .sentence-wrapper {
    min-height: 0;
  }

  .jp-sentence {
    line-height: 1.75;
  }
}

/* Tablet portrait */
@media (min-width: 769px) and (max-width: 1024px) and (orientation: portrait) {
  :root {
    --kanji-reading-modal-max-width: 720px;
  }
}