/* quiz tab — tier picker, MCQ run, Knowledge Score banner */
.quiz-score-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin: 14px 0 18px;
  padding: 14px 16px;
  border: 1px solid var(--st2);
  border-radius: 10px;
  background: var(--chrome);
}
.quiz-score-main { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.quiz-score-num { font-size: 28px; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--fg); }
.quiz-score-label { font-size: 14px; color: var(--fg2); }

.quiz-tier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 8px;
}
.quiz-tier-card {
  border: 1px solid var(--st2);
  border-radius: 10px;
  padding: 14px;
  background: var(--fill3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.quiz-tier-card.locked { opacity: 0.65; }
.quiz-tier-name { font-weight: 600; font-size: 15px; }
.quiz-tier-meta { font-size: 12px; color: var(--fg2); }
.quiz-tier-progress { font-size: 11px; color: var(--fg3); margin-bottom: 4px; }
.quiz-tier-card .btn { margin-top: auto; align-self: flex-start; }

.quiz-run { max-width: 640px; }
.quiz-run-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.quiz-progress-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--st3);
  margin-bottom: 16px;
  overflow: hidden;
}
.quiz-progress-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 2px;
  transition: width 0.2s ease;
}
.quiz-stem {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.45;
  margin-bottom: 14px;
}
.quiz-options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.quiz-opt-row { position: relative; border-radius: 8px; overflow: hidden; }
.quiz-opt-fill { position: absolute; inset: 0 auto 0 0; width: 0; background: rgba(63, 162, 102, 0.12); pointer-events: none; transition: width 0.3s ease; }
.quiz-opt-row .quiz-opt { position: relative; z-index: 1; }
.quiz-opt-pct { font-size: 11px; color: var(--fg2); margin-left: 8px; }
.quiz-opt {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 14px !important;
  justify-content: flex-start;
}
.quiz-opt.correct { border-color: var(--green) !important; color: var(--green); background: rgba(63, 162, 102, 0.08); }
.quiz-opt.wrong { border-color: var(--red) !important; color: var(--red); background: rgba(229, 112, 126, 0.08); }
.quiz-explanation { margin: 12px 0; font-size: 13px; }
.quiz-stats-note { margin: 8px 0 0; font-size: 12px; font-style: italic; }
.quiz-result-score { font-size: 32px; font-weight: 600; margin: 8px 0; }
.quiz-result-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.quiz-cancel-btn { margin-top: 12px; }