/* ═══════════════════════════════════════════════════════
   HubFlow — Flashcard Engine shell styles
   Shared by the two js/flashcard-engine.js pages (vocabulary,
   pronunciation-study): compact header/mode-bar, the scrollable
   category selector with fade+expand, and the battle/match mode
   layouts. Extracted 2026-07-10 from an inline <style> block that
   pronunciation-study.html had copied byte-for-byte from
   vocabulary.html (reformatted, with color swapped).
   Color varies via [data-color] on the page's .wrap element.
   ═══════════════════════════════════════════════════════ */

body { min-height: 100vh; min-height: 100dvh; overflow-x: hidden; padding: 0 14px; }
/* .header and h1 sizing → exercise-enhanced.css (single source of truth) */
h1 { display: flex; align-items: center; gap: 6px; }

/* Category selector — pill sizing (wrapper/expander → components.css) */
#catBar .pill-btn {
  flex: 0 0 auto;
  padding: 5px 11px;
  font-size: .64rem;
  min-height: unset;
  white-space: nowrap;
}

/* Mode bar */
.header .pill-bar:not(.pill-bar--scroll) { padding: 2px; gap: 1px; margin-bottom: 2px; }
.header .pill-bar:not(.pill-bar--scroll) .pill-btn { padding: 3px 8px; font-size: .65rem; min-height: unset; }

/* Compact progress */
#progressWrap { margin-bottom: 0; }
#progressWrap .progress__labels { margin-bottom: 2px; font-size: .6rem; }

/* Study area */
[data-area] { display: none; flex-direction: column; align-items: center; gap: 4px; width: 100%; }
[data-area].show { display: flex; }

/* Align primary content blocks across modes */
.wrap:has(.ex-mode-stage) {
  --lp-flashcard-mode-h: 230px;
  --lp-quiz-prompt-h: 95px;
  --lp-quiz-stack-gap: 4px;
  --lp-match-battle-h: var(--lp-flashcard-mode-h);
  --lp-battle-stack-gap: 6px;
  --lp-battle-stack-overhead: 78px;
}
.fc-card,
.quiz-prompt {
  box-sizing: border-box;
}
[data-area="study"] .fc-card {
  height: var(--lp-flashcard-mode-h);
  min-height: var(--lp-flashcard-mode-h);
}
[data-area="study"] .fc-face {
  padding: 18px 20px;
  gap: 6px;
}
[data-area="quiz"] .quiz-prompt,
[data-area="timed"] .quiz-prompt {
  min-height: var(--lp-quiz-prompt-h);
  height: auto;
  padding: 10px 14px;
  gap: 2px;
}
.quiz-prompt {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
[data-area="quiz"] .quiz-prompt__emoji,
[data-area="timed"] .quiz-prompt__emoji {
  font-size: 1.35rem;
  margin-bottom: 2px;
}
[data-area="quiz"] .quiz-prompt__label,
[data-area="timed"] .quiz-prompt__label {
  margin-bottom: 2px;
}
[data-area="quiz"] .quiz-prompt__text,
[data-area="timed"] .quiz-prompt__text {
  font-size: 1.05rem;
  line-height: 1.25;
}
[data-area="quiz"] .quiz-options,
[data-area="timed"] .quiz-options {
  min-height: calc(var(--lp-flashcard-mode-h) - var(--lp-quiz-prompt-h) - var(--lp-quiz-stack-gap));
  align-content: start;
}
[data-area="quiz"] .quiz-opt,
[data-area="timed"] .quiz-opt {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.25;
  box-sizing: border-box;
}
[data-area="match"] .pair-grid {
  min-height: var(--lp-flashcard-mode-h);
  align-content: start;
  gap: 6px 10px;
}
[data-area="match"] .pair-col-label {
  padding-bottom: 2px;
  font-size: .58rem;
}
[data-area="match"] .pair-item {
  min-height: 36px;
  padding: 7px 10px;
  font-size: .73rem;
}
[data-area="battle"].show {
  gap: var(--lp-battle-stack-gap);
  min-height: var(--lp-match-battle-h);
}
[data-area="battle"] .battle-scores {
  margin-bottom: 2px;
}
[data-area="battle"] .player-score {
  padding: 4px 14px;
}
[data-area="battle"] > .progress {
  flex-shrink: 0;
}

/* Flashcard overrides */
.fc-card { max-width: 720px; height: var(--lp-flashcard-mode-h, 230px); }
.fc-back .fc-detail { font-size: .72rem; }

/* IPA pronunciation */
.fc-ipa {
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  color: var(--muted);
  letter-spacing: .02em;
  margin-top: 2px;
  min-height: 1.1em;
}

/* Battle card */
.battle-card {
  width: 100%;
  max-width: 360px;
  height: calc(var(--lp-match-battle-h, 259px) - var(--lp-battle-stack-overhead, 140px));
  perspective: 1200px;
  position: relative;
  margin: 0 auto 4px;
}
.battle-card .fc-inner { position: absolute; inset: 0; border-radius: var(--radius-lg); transition: transform .55s var(--ease); transform-style: preserve-3d; }
.battle-card.flipped .fc-inner { transform: rotateY(180deg); }
.battle-card .fc-face { border-radius: var(--radius-lg); padding: 16px; }
.battle-card .fc-emoji { font-size: 2.4rem; }
.battle-card .fc-term { font-size: 1.4rem; }

.battle-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: var(--lp-radius-lg);
  background: var(--lp-surface);
  border: 1px solid var(--lp-border-subtle, var(--lp-border));
  box-shadow: var(--lp-shadow-xs);
  box-sizing: border-box;
}

/* Bottom nav bar — see css/ex-bottom-nav.css (canonical, mirrors FluentFlow game-controls) */
.battle-instruction {
  font-size: .58rem;
  font-weight: 600;
  color: color-mix(in srgb, var(--muted) 80%, transparent);
  text-align: center;
  line-height: 1.2;
  margin: 0 0 2px;
  min-height: 0.85rem;
  opacity: 1;
  transition: opacity 0.55s ease;
}
.battle-instruction.is-fading {
  opacity: 0;
  pointer-events: none;
}
@media (prefers-reduced-motion: reduce) {
  .battle-instruction { transition: none; }
}
#pairScore:not(.show) { display: none; }
.scroll-body { padding: 0 0 40px; }

/* ─── Accent color variants ───────────────────────────────────────────── */

[data-color="purple"] h1 .accent { font-style: italic; font-weight: 400; font-size: .9em; color: var(--purple); }
[data-color="purple"] .fc-back { background: var(--c-vocab-soft); border-color: var(--purple); }
[data-theme="dark"] [data-color="purple"] .fc-back { background: var(--surface); border-color: var(--purple); }
[data-color="purple"] .fc-back .fc-term { color: var(--purple); font-size: 1.3rem; }

[data-color="blue"] h1 .accent { font-style: italic; font-weight: 400; font-size: .9em; color: var(--lp-cat-blue); }
[data-color="blue"] .fc-back { background: rgba(59,130,246,.06); border-color: var(--lp-cat-blue); }
[data-theme="dark"] [data-color="blue"] .fc-back { background: var(--surface); border-color: var(--lp-cat-blue); }
[data-color="blue"] .fc-back .fc-term { color: var(--lp-cat-blue); font-size: 1.3rem; }

[data-color="teal"] h1 .accent { font-style: italic; font-weight: 400; font-size: .9em; color: var(--lp-cat-teal); }
[data-color="teal"] .fc-back { background: var(--lp-cat-teal-soft); border-color: var(--lp-cat-teal); }
[data-theme="dark"] [data-color="teal"] .fc-back { background: var(--surface); border-color: var(--lp-cat-teal); }
[data-color="teal"] .fc-back .fc-term { color: var(--lp-cat-teal); font-size: 1.3rem; }
[data-color="teal"] .progress__fill { background: var(--lp-cat-teal); }

/* ─── MOBILE: flashcard-specific compact layout ─── */
@media (max-width: 639px) {
  .wrap:has(.ex-mode-stage) {
    --lp-flashcard-mode-h: 165px;
    --lp-quiz-prompt-h: 88px;
  --lp-match-battle-h: var(--lp-flashcard-mode-h);
  --lp-battle-stack-gap: 4px;
  --lp-battle-stack-overhead: 74px;
  }
  .ex-mode-stage:has([data-area="study"].show),
  .ex-mode-stage:has([data-area="quiz"].show),
  .ex-mode-stage:has([data-area="timed"].show) { min-height: var(--lp-flashcard-mode-h); }
  .ex-mode-stage:has([data-area="match"].show),
  .ex-mode-stage:has([data-area="battle"].show) { min-height: var(--lp-match-battle-h); }
  .cat-scroll-wrapper { margin-bottom: 2px; }
  .header .pill-bar:not(.pill-bar--scroll) { margin-bottom: 0; }
  #progressWrap { margin-bottom: 0; }
  .fc-card {
    height: var(--lp-flashcard-mode-h);
    min-height: var(--lp-flashcard-mode-h);
    max-width: 100%;
  }
  [data-area="quiz"] .quiz-prompt,
  [data-area="timed"] .quiz-prompt {
    height: auto;
    min-height: 0;
    padding: 8px 12px;
  }
  [data-area="match"] .pair-grid { min-height: var(--lp-flashcard-mode-h); }
  .fc-count { font-size: .7rem; margin-bottom: 0; }
  [data-area] { gap: 2px; }
}

/* ─── DUAL WORD CARD (Word Relations) ─────────────────────────────────── */

.fc-card--dual { height: 220px; }

.fc-card--dual .fc-face.fc-face--dual {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 1.2rem 1rem;
  position: absolute;
  inset: 0;
}

.fc-card--dual .fc-face--dual .fc-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  translate: -50% 0;
}

.fc-dual-word {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
}

.fc-dual-emoji {
  font-size: 2.8rem;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.12));
}

.fc-dual-term {
  font-family: 'Newsreader', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  word-break: break-word;
}

.fc-dual-relation {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--muted);
  opacity: .5;
  flex-shrink: 0;
  padding: 0 10px;
  align-self: center;
}

/* Back — dual pair recap */
.fc-card--dual .fc-back--dual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 1.2rem 1rem;
}

.fc-dual-back-pair {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.fc-back-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--lp-radius-full, 999px);
  background: color-mix(in srgb, var(--lp-cat-teal) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--lp-cat-teal) 25%, transparent);
  font-family: 'Newsreader', serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.fc-back-rel {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--muted);
  opacity: .6;
}

/* ─── Dual card color variants ─── */
[data-color="teal"] .fc-dual-term { color: var(--lp-cat-teal); }
[data-color="teal"] .fc-dual-relation { color: var(--lp-cat-teal); }
[data-color="teal"] .fc-back-chip { color: var(--lp-cat-teal); }

/* ─── Mobile: dual card ─── */
@media (max-width: 639px) {
  .fc-card--dual { height: 190px; }
  .fc-dual-emoji { font-size: 2.2rem; }
  .fc-dual-term { font-size: 1.15rem; }
  .fc-dual-relation { font-size: 1.2rem; padding: 0 5px; }
  .fc-card--dual .fc-face--dual { padding: 0.75rem 0.5rem; }
}