/* Quiz UI — extends lessons.css */
.quiz-main { max-width: 880px; padding-top: 56px; padding-bottom: 80px; }

.quiz-screen h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
}
.quiz-screen h1 em { font-style: italic; color: var(--tan-deep); }

/* Intro form */
.quiz-form {
  display: grid;
  gap: 18px;
  margin-top: 32px;
  max-width: 640px;
}
.quiz-field { display: block; }
.quiz-field span {
  display: block;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tan-deep);
  margin-bottom: 8px;
}
.quiz-field input {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--ink);
  background: var(--cream-soft);
  border: 1px solid var(--tan-line);
  border-radius: 12px;
  transition: border-color .15s ease, background .15s ease;
}
.quiz-field input:focus {
  outline: none;
  border-color: var(--tan-deep);
  background: #fff;
}

.quiz-track-choice {
  border: 1px solid var(--tan-line);
  border-radius: 14px;
  padding: 18px;
  margin: 0;
  background: var(--cream-soft);
}
.quiz-track-choice legend {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tan-deep);
  padding: 0 6px;
}
.track-radio {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 6px;
  cursor: pointer;
  border-bottom: 1px solid var(--tan-line);
}
.track-radio:last-child { border-bottom: 0; }
.track-radio input { margin-top: 5px; accent-color: var(--tan-deep); }
.track-label strong { font-family: var(--serif); font-size: 1.15rem; font-weight: 500; }
.track-label em { display: block; color: var(--ink-soft); font-style: normal; font-size: .9rem; margin-top: 2px; }

.quiz-note {
  font-size: .9rem;
  color: var(--muted);
  max-width: 60ch;
}

.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* Active quiz topbar */
.quiz-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 32px 0 20px;
  flex-wrap: wrap;
}
.quiz-progress { flex: 1; min-width: 220px; }
.quiz-progress span {
  display: block;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tan-deep);
  margin-bottom: 8px;
}
.quiz-progress-bar {
  height: 6px;
  background: var(--cream-deep);
  border-radius: 999px;
  overflow: hidden;
}
#quiz-progress-fill {
  height: 100%;
  background: var(--tan-deep);
  width: 0;
  transition: width .25s ease;
}
.quiz-timer {
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: .04em;
  background: var(--cream-soft);
  border: 1px solid var(--tan-line);
  border-radius: 12px;
  padding: 10px 18px;
}
.quiz-timer.warn  { color: #b34646; border-color: #d8a4a4; background: #fbeded; }

/* Question card */
.quiz-card {
  background: var(--cream-soft);
  border: 1px solid var(--tan-line);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 24px;
}
.quiz-meta {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--tan-deep);
  margin: 0 0 16px;
}
.quiz-question {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.55rem;
  line-height: 1.3;
  margin: 0 0 24px;
}
.quiz-options { display: grid; gap: 10px; margin-bottom: 24px; }
.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border: 1.5px solid var(--tan-line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  transition: background .15s ease, border-color .15s ease;
}
.quiz-option:hover { background: var(--cream-deep); }
.quiz-option input { margin-top: 5px; accent-color: var(--tan-deep); }
.quiz-option .letter {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--tan-deep);
  margin-right: 4px;
}
.quiz-option.selected {
  border-color: var(--tan-deep);
  background: var(--cream-deep);
}
.quiz-card-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid var(--tan-line);
  padding-top: 20px;
}

/* Result */
.result-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 28px 0 32px;
}
@media (max-width: 720px) {
  .result-stats { grid-template-columns: repeat(2, 1fr); }
}
.result-stat {
  background: var(--cream-soft);
  border: 1px solid var(--tan-line);
  border-radius: 12px;
  padding: 16px 20px;
}
.result-stat .label {
  display: block;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--tan-deep);
  margin-bottom: 6px;
}
.result-stat .value {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--ink);
}
.result-stat .value.pass { color: #2c6a3e; }
.result-stat .value.fail { color: #a94444; }

.result-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.review-list {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}
.review-item {
  background: var(--cream-soft);
  border: 1px solid var(--tan-line);
  border-left: 3px solid #a94444;
  border-radius: 10px;
  padding: 16px 18px;
}
.review-item.correct { border-left-color: #2c6a3e; }
.review-item .ri-id {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--tan-deep);
  text-transform: uppercase;
}
.review-item .ri-q {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin: 6px 0 10px;
}
.review-item .ri-detail {
  font-size: .92rem;
  color: var(--ink-soft);
  margin: 4px 0;
}
.review-item .ri-detail strong { color: var(--ink); }