/* ============================================================
   LOANWORD — 외래어 카테고리 전용 스타일
   ============================================================
   공통 토큰/레이아웃은 /shared/base.css 에서 로드.
   여기는 외래어 학습 UI 만 (원어 표시, 2지선다 선택지, 결과 배너).
   ============================================================ */

.quiz {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  text-align: center;
  padding: 32px 16px;
  min-height: 360px;
}

.source-block {
  width: 100%;
}

.source-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.source-word {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(32px, 7vw, 64px);
  font-weight: 500;
  color: var(--ink-strong);
  letter-spacing: -0.02em;
  line-height: 1.1;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
  max-width: 480px;
}

.choice-btn {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
  font-family: inherit;
  color: var(--ink);
  box-shadow: var(--shadow);
  min-height: 72px;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.choice-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.choice-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.choice-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.choice-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.choice-btn.correct {
  background: var(--correct-bg);
  border-color: var(--correct);
  color: var(--correct);
  opacity: 1;
}

.choice-btn.wrong {
  background: var(--wrong-bg);
  border-color: var(--wrong);
  color: var(--wrong);
  opacity: 1;
}

.choice-key {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--ink-mute);
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.1em;
}

.choice-btn.correct .choice-key,
.choice-btn.wrong .choice-key {
  background: transparent;
  color: inherit;
  opacity: 0.7;
}

.choice-text {
  font-size: clamp(18px, 4vw, 22px);
  font-weight: 500;
  letter-spacing: -0.01em;
  word-break: keep-all;
}

.result {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  padding: 0 8px;
  text-align: center;
}

.result.show-correct { color: var(--correct); }
.result.show-wrong   { color: var(--wrong); }

.result .label {
  text-transform: uppercase;
  font-weight: 700;
}

.result .next-hint {
  color: var(--ink-mute);
  font-size: 11px;
}

.result .correct-answer {
  font-weight: 500;
  color: var(--ink);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .quiz { padding: 24px 8px; gap: 32px; min-height: 320px; }
}

@media (max-width: 480px) {
  .quiz { padding: 20px 4px; gap: 28px; min-height: 280px; }
  .source-label { margin-bottom: 8px; }
  .choices { grid-template-columns: 1fr; gap: 10px; }
  .choice-btn {
    padding: 18px 16px;
    flex-direction: row;
    justify-content: center;
    gap: 12px;
    min-height: 56px;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  .quiz { gap: 20px; min-height: 200px; padding: 16px 8px; }
  .source-word { font-size: clamp(28px, 5vw, 48px); }
}

@media (min-width: 1280px) {
  .quiz { padding: 56px 24px; }
}