/*
 * Color palette for the mnemonic modal.
 * Using theme-specific variables so .dark-mode overrides are not
 * scattered throughout - just two blocks at the top and the rest is DRY.
 *
 * Light theme:
 *   Labels    — warm amber-brown: structural, informational
 *   Linked    — warm amber-brown: clearly interactive/navigable
 *   Radicals  — amber (#c07a00): external resource, warm and distinctive
 *   Button    — neutral charcoal: understated, not competing with card UI
 *
 * Dark theme:
 *   Labels    — Dracula comment (#6272a4): visible but soft on dark backgrounds
 *   Linked    — Dracula cyan (#8be9fd): fresh, readable, non-green
 *   Radicals  — Dracula orange (#ffb86c): warm, distinctive
 *   Button    — matches the card's text/border palette
 */
:root {
  /* Mnemonic modal layout - reassigned per breakpoint below */
  --mnemonic-modal-max-width: 620px;
  --mnemonic-modal-padding: 1.25em;
  --mnemonic-modal-max-height: 82dvh;
  --mnemonic-svg-size: 104px;
  --mnemonic-meaning-font-size: var(--16px);
  --mnemonic-reading-font-size: var(--15px);
  --mnemonic-text-font-size: var(--16px);
  --mnemonic-section-label-font-size: var(--16px);
  --radical-external-icon-size: calc(var(--pill-size) * 0.27);

  /* Mnemonic color palette - light theme */
  --mnemonic-keyword: #cc2020;
  --mnemonic-accent-label: #c07a00;
  --mnemonic-accent-linked: var(--color-light-theme-accent);
  --mnemonic-accent-linked-bg: rgb(123 84 47 / 10%);
  --mnemonic-accent-radical: #c07a00;
  --mnemonic-accent-radical-bg: rgb(192 122 0 / 10%);
  --mnemonic-text-muted: #655f56;
}

.dark-mode {
  --mnemonic-keyword: #c07a00;
  --mnemonic-accent-label: var(--color-dark-theme-accent);
  --mnemonic-accent-linked: var(--color-dark-theme-accent);
  --mnemonic-accent-linked-bg: rgb(134 182 246 / 12%);
  --mnemonic-accent-radical: var(--color-dark-theme-text-default);
  --mnemonic-accent-radical-bg: rgb(234 224 207 / 12%);
  --mnemonic-text-muted: var(--color-dark-theme-text-muted);
}

body.writing-kanji-modal-open .mnemonic-overlay.open {
  z-index: var(--z-index-modal-overlay-stacked);
}

.mnemonic-modal-content {
  line-height: 1.65;
  overflow-y: auto;
  flex: 1;
  min-height: 0; /* required - flex children default to min-height: auto which blocks overflow */
  scrollbar-width: none; /* Firefox */
}

.mnemonic-modal-content::-webkit-scrollbar {
  display: none; /* Chrome, Safari, iOS */
}

/* ==========================================
   Modal panel
   ========================================== */

.mnemonic-modal {
  width: 100%;
  max-width: var(--mnemonic-modal-max-width);
  max-height: var(--mnemonic-modal-max-height);
  display: flex;
  flex-direction: column;
  padding: var(--mnemonic-modal-padding);
}

/* ==========================================
   Modal header
   ========================================== */

.mnemonic-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 0.9em;
  margin-bottom: 1em;
  padding-right: 2.25em; /* clear the close button */
}

.mnemonic-visual-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35em;
  flex-shrink: 0;
}

.mnemonic-svg-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--mnemonic-svg-size);
  height: var(--mnemonic-svg-size);
  padding: 0;

  /* prevents the header's flex layout from squishing it */
  flex-shrink: 0;
  border: var(--border-thin-light-theme);
  border-radius: var(--border-radius-medium);
  background-color: var(--color-light-theme-sunken);
}

.dark-mode .mnemonic-svg-container {
  border: var(--border-thin-dark-theme);
  background-color: var(--color-dark-theme-background-default);
}

.mnemonic-svg-container .inline-svg-host,
.mnemonic-svg-container .inline-svg-host svg {
  width: var(--mnemonic-svg-size);
  height: var(--mnemonic-svg-size);
  display: block;
}

.svg-stroke-label {
  position: absolute;
  top: 6px;
  left: 6px;
  min-width: 21px;
  height: 21px;
  padding: 0 4px;
  border-radius: var(--border-radius-small);
  border: 1px solid var(--color-light-theme-accent);
  background: rgb(0 0 0 / 40%);
  color: white;
  font-size: 9px;
  font-family: sans-serif;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease;
}

.dark-mode .svg-stroke-label {
  background: rgb(255 255 255 / 20%);
  border: 1px solid var(--color-dark-theme-accent);
}

.mnemonic-stroke-count {
  width: 100%;
  color: var(--mnemonic-text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
}

.mnemonic-header-copy {
  min-width: 0;
  padding-top: 0.2em;
}

.mnemonic-kanji-meaning {
  min-width: 0;
  max-width: 20ch;
  margin-top: -0.5em;
  margin-bottom: 0.45em;
  font-size: var(--mnemonic-meaning-font-size);
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-light-theme-text-default);
}

.dark-mode .mnemonic-kanji-meaning {
  color: var(--color-dark-theme-text-default);
}

.mnemonic-readings {
  display: grid;
  gap: 0.25em;
}

.mnemonic-reading-line {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  align-items: baseline;
  gap: 0.4em;
  min-width: 0;
  font-size: var(--mnemonic-reading-font-size);
  line-height: 1.35;
}

.mnemonic-reading-label {
  color: var(--mnemonic-accent-label);
  font-size: 0.72em;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.mnemonic-reading-text {
  min-width: 0;
  color: var(--mnemonic-text-muted);
  font-family: var(--font-family-japanese-font-stack);
}

/* ==========================================
   Sections
   ========================================== */

.mnemonic-section {
  margin-bottom: 0.7em;
}

.mnemonic-section:last-child {
  margin-bottom: 0;
}

.mnemonic-section-label {
  font-size: var(--mnemonic-section-label-font-size);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mnemonic-accent-label);
  margin: 0 0 0.45em;
}

/*
 * Boxed sections (Built from, Appears in, Radicals).
 * Background mirrors the reading-section treatment on kanji cards
 * so the visual language is consistent.
 */
.mnemonic-section-boxed {
  background: var(--color-light-theme-sunken);
  border: var(--border-thin-light-theme);
  border-radius: var(--border-radius-medium);
  padding: 0.65em;
}

.dark-mode .mnemonic-section-boxed {
  border: var(--border-thin-dark-theme);
  background: var(--color-dark-theme-background-default);
}

/* ==========================================
   Mnemonic text
   ========================================== */

.mnemonic-text {
  font-size: var(--mnemonic-text-font-size);
  line-height: 1.60;
  color: var(--color-light-theme-text-default);
  margin: 0;
}

.dark-mode .mnemonic-text {
  color: var(--color-dark-theme-text-default);
}

/* Uppercase anchor words highlighted within the mnemonic text */
.mnemonic-keyword {
  color: var(--mnemonic-keyword);
  font-weight: 600;
}

/* ==========================================
   Notes (footnotes)
   ========================================== */

.mnemonic-footnote {
  font-size: 0.84rem;
  line-height: 1.55;
  color: #666;
  margin: 0 0 0.3em;
}

.dark-mode .mnemonic-footnote {
  color: var(--color-dark-theme-text-muted);
}

/* ==========================================
   Pill lists - related kanji + radicals share the same grid layout
   ========================================== */

.related-kanji-list,
.radical-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--pill-size), 1fr));
  gap: var(--between-pills-gap);
}

/* In-app kanji - tappable, replaces modal content in place */
.kanji-pill-linked {
  border-color: rgb(123 84 47 / 75%);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.kanji-pill-linked .kanji-pill-glyph {
  color: var(--mnemonic-accent-linked);
}

.dark-mode .kanji-pill-linked {
  border-color: rgb(134 182 246 / 70%);
}

.dark-mode .kanji-pill-linked .kanji-pill-glyph {
  color: var(--mnemonic-accent-linked);
}

.kanji-pill-linked:active {
  background: var(--mnemonic-accent-linked-bg);
}

/* Not-in-app kanji - grayed out, no interaction */
.kanji-pill-unlinked {
  cursor: default;
  border-color: var(--color-light-theme-border);
}

.dark-mode .kanji-pill-unlinked {
  border-color: var(--color-dark-theme-sunken);
}

.kanji-pill-glyph {
  color: #999;
}

.dark-mode .kanji-pill-glyph {
  color: var(--color-dark-theme-sunken);
}

/* ==========================================
   Radical pills
   ========================================== */

.radical-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1;
  color: var(--mnemonic-accent-radical);
  border: 1px solid var(--mnemonic-accent-radical);
  border-radius: var(--border-radius-medium);
  text-decoration: none;
  cursor: pointer;
  position: relative;
  transition: background var(--transition-fast);
}

.radical-pill:active {
  background: var(--mnemonic-accent-radical-bg);
}

.radical-kanji-char {
  color: var(--mnemonic-accent-radical);
  font-size: var(--pill-char-font-size);
  font-family: var(--font-family-japanese-font-stack);
  font-weight: bold;
  line-height: 1;
}

/* launch.svg icon - positioned in the top-right corner of the tile */
.radical-external-icon {
  position: absolute;
  top: 1px;
  right: 1px;
  width: var(--radical-external-icon-size);
  height: var(--radical-external-icon-size);
  opacity: 0.8;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  pointer-events: none;
}

.radical-external-icon svg {
  width: var(--radical-external-icon-size);
  height: var(--radical-external-icon-size);
  display: block;
}

.dark-mode .radical-external-icon svg {
  filter: invert(1);
}

/* ==========================================
   Shared tap/touch behavior
   ========================================== */

.kanji-pill-linked,
.radical-pill {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* ==========================================
   Focus styles (keyboard navigation)
   ========================================== */

.kanji-pill-linked:focus-visible,
.radical-pill:focus-visible {
  outline: 2px solid var(--mnemonic-accent-linked);
  outline-offset: 2px;
}

/* ==========================================
   Hover states (pointer devices only)
   ========================================== */

@media (hover: hover) {
  .kanji-pill-linked:hover {
    background: var(--mnemonic-accent-linked-bg);
  }

  .radical-pill:hover {
    background: var(--mnemonic-accent-radical-bg);
  }
}

/* ==========================================
   Responsive - only variable reassignments below
   ========================================== */

/* Mobile portrait (≤ 768px) */
@media (max-width: 768px) and (orientation: portrait) {
  :root {
    --mnemonic-svg-size: 76px;
    --mnemonic-modal-padding: 1em;
    --mnemonic-modal-max-height: calc(
      90dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 15px
    );
    --mnemonic-meaning-font-size: var(--14px);
    --mnemonic-reading-font-size: var(--13px);
    --modal-close-size: 30px;
    --modal-close-font-size: 0.9rem;
    --mnemonic-section-label-font-size: var(--13px);
    --mnemonic-text-font-size: var(--15px);
  }

  .mnemonic-overlay {
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    scrollbar-width: none;
    padding: calc(env(safe-area-inset-top) + 12px) 8px
      calc(env(safe-area-inset-bottom) + 12px);
  }

  .mnemonic-overlay::-webkit-scrollbar {
    display: none;
  }

  .mnemonic-modal {
    width: 100%;
    max-width: 100%;
    max-height: var(--mnemonic-modal-max-height);
    border-radius: var(--border-radius-card);
  }

  .mnemonic-header {
    gap: 0.7em;
    margin-bottom: 0.85em;
    padding-right: 2em;
  }

  .mnemonic-stroke-count {
    font-size: 0.66rem;
  }

  .mnemonic-modal-content {
    padding-bottom: 12px;
  }
}

/*
 * Mobile landscape - limited vertical space, widen the modal enough to avoid
 * compressing the header text.
 */
@media (max-width: 768px) and (orientation: landscape) {
  :root {
    --mnemonic-svg-size: 66px;
    --mnemonic-modal-max-width: 72vw;
    --mnemonic-modal-padding: 0.85em 1em;
    --mnemonic-modal-max-height: 86dvh;
    --mnemonic-meaning-font-size: var(--15px);
    --mnemonic-reading-font-size: var(--14px);
    --modal-close-size: 30px;
    --modal-close-font-size: 0.9rem;
    --mnemonic-section-label-font-size: var(--14px);
    --mnemonic-text-font-size: var(--16px);
  }

  .mnemonic-overlay {
    align-items: center;
    justify-content: center;
    padding: calc(env(safe-area-inset-top) + 10px)
      calc(env(safe-area-inset-right) + 10px)
      calc(env(safe-area-inset-bottom) + 10px)
      calc(env(safe-area-inset-left) + 10px);
  }

  .mnemonic-header {
    gap: 0.65em;
    margin-bottom: 0.75em;
    padding-right: 2em;
  }

  .mnemonic-stroke-count {
    font-size: 0.64rem;
  }
}

/* Tablet portrait (769px–1024px) - more room on iPad Pro portrait */
@media (min-width: 769px) and (max-width: 1024px) and (orientation: portrait) {
  :root {
    --mnemonic-svg-size: 100px;
    --mnemonic-modal-max-width: 680px;
    --mnemonic-modal-padding: 1.4em;
    --mnemonic-meaning-font-size: var(--17px);
    --mnemonic-reading-font-size: var(--16px);
    --mnemonic-section-label-font-size: var(--16px);
    --mnemonic-text-font-size: var(--18px);
  }
}

/*
 * Large phones in landscape (iPhone 12/13/14/15, ~844px–932px wide).
 * Fires after tablet portrait so it overrides for landscape phones.
 * iPads in landscape are >= 1025px wide and skip this query.
 */
@media (min-width: 769px) and (max-width: 1024px) and (orientation: landscape) {
  :root {
    --mnemonic-svg-size: 74px;
    --mnemonic-modal-max-width: 66vw;
    --mnemonic-modal-padding: 0.9em 1.1em;
    --mnemonic-modal-max-height: 82dvh;
    --pill-char-font-size: 24px;
    --mnemonic-meaning-font-size: var(--15px);
    --mnemonic-reading-font-size: var(--14px);
    --mnemonic-section-label-font-size: var(--14px);
    --mnemonic-text-font-size: var(--16px);
  }
}

/* Desktop (>= 1025px) */
@media (min-width: 1025px) {
  :root {
    --mnemonic-svg-size: 108px;
    --mnemonic-modal-max-width: 620px;
    --mnemonic-meaning-font-size: var(--17px);
    --mnemonic-reading-font-size: var(--16px);
    --mnemonic-section-label-font-size: var(--16px);
    --mnemonic-text-font-size: var(--18px);
  }
}