/* ─── Quiz overlay ─── */
.quiz-overlay {
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.045), rgba(5, 5, 5, 0.96) 60%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 200;
  display: grid; place-items: center;
  animation: fadein 0.35s ease;
}

.quiz-card {
  background: rgba(11, 11, 11, 0.94);
  backdrop-filter: blur(40px);
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  padding: 36px 44px 32px;
  max-width: 560px; width: 92vw;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
  display: flex; flex-direction: column;
}

.quiz-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px;
}
.quiz-topic-badge {
  display: inline-flex; padding: 4px 10px;
  border-radius: 99px; font-size: 10px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  border: 1px solid;
}
.quiz-counter {
  font-family: var(--font-heading);
  font-size: 15px; color: var(--text-faint);
  font-weight: 900;
}

.quiz-progress {
  height: 4px; border-radius: 4px;
  background: rgba(255,255,255,0.06);
  margin-bottom: 24px; overflow: hidden;
}
.quiz-progress-fill {
  height: 100%; border-radius: 4px;
  transition: width 0.4s cubic-bezier(.4,0,.2,1);
}

.quiz-question {
  font: 500 17px/1.55 'Outfit', sans-serif;
  color: var(--text);
  margin-bottom: 24px;
}

/* MCQ */
.quiz-options { display: flex; flex-direction: column; gap: 8px; }
.quiz-option {
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  padding: 13px 16px;
  text-align: left;
  font: 400 13.5px/1.4 'Outfit', sans-serif;
  color: var(--text-soft);
  cursor: pointer;
  transition: all 0.15s;
  display: flex; align-items: center; gap: 10px;
}
.quiz-option:hover {
  border-color: var(--border-strong);
  background: rgba(255,255,255,0.05);
}
.quiz-option.selected {
  border-color: #5AC8FA;
  background: rgba(90,200,250,0.08);
  color: var(--text);
}
.quiz-option-key {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  font-size: 11px; font-weight: 600;
  color: var(--text-faint);
  flex-shrink: 0;
}
.quiz-option.selected .quiz-option-key {
  background: rgba(90,200,250,0.2);
  color: #5AC8FA;
}

/* Text input */
.quiz-input {
  width: 100%; padding: 13px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font: 400 14px/1.4 'Outfit', sans-serif;
  outline: none;
  transition: border-color 0.15s;
  box-sizing: border-box;
}
.quiz-input:focus { border-color: #5AC8FA; }
.quiz-input::placeholder { color: var(--text-faint); }

/* Matching */
.quiz-match-hint {
  font-size: 11px; color: var(--text-faint);
  margin-bottom: 12px; letter-spacing: 0.02em;
}
.quiz-match-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; }
.quiz-match-col { display: flex; flex-direction: column; gap: 8px; }
.quiz-match-item {
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  border-radius: 10px;
  padding: 10px 12px;
  font: 400 12.5px/1.3 'Outfit', sans-serif;
  color: var(--text-soft);
  cursor: pointer;
  transition: all 0.15s;
  display: flex; align-items: center; gap: 8px;
  text-align: left;
}
.quiz-match-item:hover { border-color: var(--border-strong); }
.quiz-match-item.active {
  border-color: #5AC8FA;
  background: rgba(90,200,250,0.1);
  color: var(--text);
}
.quiz-match-item.paired { color: var(--text); }
.quiz-pair-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Nav */
.quiz-nav {
  display: flex; justify-content: flex-end; align-items: center; gap: 12px;
  margin-top: 28px;
}
.quiz-skip {
  appearance: none; border: none; background: none;
  color: var(--text-faint); font-size: 13px; font-weight: 500;
  cursor: pointer; padding: 8px 12px; border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}
.quiz-skip:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.quiz-next {
  appearance: none; border: none;
  padding: 12px 32px;
  border-radius: 12px;
  font: 600 13px/1 'Outfit', sans-serif;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: #0a0a0c;
  cursor: pointer;
  transition: transform 0.1s, filter 0.15s;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}
.quiz-next:hover { transform: translateY(-1px); filter: brightness(1.1); }
.quiz-next:active { transform: translateY(1px); }
.quiz-next.disabled {
  background: rgba(255,255,255,0.06) !important;
  color: var(--text-faint);
  cursor: default;
  box-shadow: none;
}
.quiz-next.disabled:hover { transform: none; filter: none; }

/* Results */
.quiz-results { align-items: center; text-align: center; }
.quiz-score-label {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.quiz-score {
  font-family: var(--font-heading);
  font-size: 72px; line-height: 1;
  font-weight: 900;
  margin-bottom: 4px;
}
.quiz-score-total { font-size: 32px; color: var(--text-faint); }
.quiz-pass .quiz-score { color: var(--completed); }
.quiz-fail .quiz-score { color: #FF375F; }
.quiz-result-msg {
  font-size: 14px; color: var(--text-soft);
  margin-bottom: 24px; line-height: 1.5;
}

.quiz-breakdown {
  width: 100%;
  display: flex; flex-direction: column; gap: 3px;
  margin-bottom: 24px;
  max-height: 200px; overflow-y: auto;
}
.quiz-bk-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 12px; border-radius: 8px;
  font-size: 12px;
}
.quiz-bk-row.correct { background: rgba(48, 209, 88, 0.06); }
.quiz-bk-row.wrong   { background: rgba(255, 55, 95, 0.06); }
.quiz-bk-num { width: 20px; color: var(--text-faint); font-weight: 600; }
.quiz-bk-topic { flex: 1; color: var(--text-soft); }
.quiz-bk-icon { font-weight: 700; }
.quiz-bk-row.correct .quiz-bk-icon { color: var(--completed); }
.quiz-bk-row.wrong   .quiz-bk-icon { color: #FF375F; }

.quiz-cta {
  appearance: none; border: none;
  width: 100%; padding: 14px 18px;
  border-radius: 14px;
  font: 700 13px/1 'Outfit', sans-serif;
  letter-spacing: 0.06em; text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.1s, filter 0.15s;
}
.quiz-cta.pass {
  background: linear-gradient(180deg, var(--completed-soft) 0%, var(--completed) 100%);
  color: #07210e;
  box-shadow: 0 8px 24px rgba(48, 209, 88, 0.35);
}
.quiz-cta.pass:hover { transform: translateY(-1px); filter: brightness(1.06); }
.quiz-cta.retry {
  background: linear-gradient(180deg, #FF5E7A 0%, #FF375F 100%);
  color: #1a0008;
  box-shadow: 0 8px 24px rgba(255, 55, 95, 0.3);
}
.quiz-cta.retry:hover { transform: translateY(-1px); filter: brightness(1.06); }

.quiz-close {
  appearance: none; border: none;
  background: none; color: var(--text-faint);
  font: 500 12px/1 'Outfit', sans-serif;
  margin-top: 12px; cursor: pointer;
  padding: 8px;
  transition: color 0.15s;
}
.quiz-close:hover { color: var(--text-soft); }