/* ── Main quiz container ─────────────────────────────────────────── */
#quiz-app {
  max-width: 680px;
  margin: 0 auto;
  /* 16px (nav top offset) + 56px (nav height) + 32px breathing room */
  padding: 104px var(--sp-4) 96px;
}

/* ── Screen transitions ──────────────────────────────────────────── */
.screen {
  display: none;
  flex-direction: column;
  gap: 24px;
  animation: q-fade-up 0.3s var(--ease) both;
}
.screen.active { display: flex; }

@keyframes q-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Glass card (matches site's .card style) ─────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: var(--glass-specular);
  opacity: 0.5;
}

.glass-card > * { position: relative; }

/* ─────────────────────────────────────────────────────────────────
   SETUP SCREEN
───────────────────────────────────────────────────────────────── */

.setup-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: var(--glass-border);
}

.setup-icon {
  width: 48px;
  height: 48px;
  background: var(--brand-dim);
  border: 1px solid rgba(224, 90, 90, 0.25);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.setup-icon svg { width: 24px; height: 24px; color: var(--brand); }

.setup-title {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  line-height: 1.1;
}

.setup-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: 4px;
}

.setup-grid {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-bottom: 24px;
}

.setup-group { display: flex; flex-direction: column; gap: 10px; }

.setup-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--text-tertiary);
}

/* Quiz-specific chip row (horizontal pills, not the vertical pages.css chips) */
.quiz-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quiz-chip {
  padding: 7px 16px;
  border-radius: 100px;
  background: var(--glass-bg);
  border: var(--glass-border);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.quiz-chip:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow);
}

.quiz-chip.active {
  background: var(--brand-dim);
  border-color: rgba(224, 90, 90, 0.4);
  color: #ff8a8a;
  box-shadow: 0 0 14px rgba(224, 90, 90, 0.2);
}

/* Setup stats */
.setup-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.stat-pill {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  flex: 1;
  min-width: 90px;
}

.stat-num {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 20px;
  color: var(--brand);
  letter-spacing: var(--tracking-tight);
}

.stat-lbl {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* ─────────────────────────────────────────────────────────────────
   BUTTONS
───────────────────────────────────────────────────────────────── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--fw-semi);
  border: none;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  box-shadow: 0 4px 20px rgba(224, 90, 90, 0.3);
  letter-spacing: var(--tracking-snug);
}

.btn-primary svg { width: 17px; height: 17px; }
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-2px) scale(1.02); box-shadow: 0 8px 28px rgba(224, 90, 90, 0.4); }
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-primary:disabled { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; filter: none; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--fw-medium);
  border: var(--glass-border);
  cursor: pointer;
  transition: all var(--dur-mid) var(--ease-spring);
}

.btn-ghost:hover { color: var(--text-primary); background: var(--glass-bg-hover); transform: translateY(-2px); }

/* ─────────────────────────────────────────────────────────────────
   QUIZ SCREEN
───────────────────────────────────────────────────────────────── */

.quiz-top-bar {
  display: flex;
  align-items: center;
  gap: 14px;
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.progress-track {
  flex: 1;
  height: 3px;
  background: var(--glass-bg-hover);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--brand);
  border-radius: 100px;
  transition: width 0.4s var(--ease);
  width: 0%;
  box-shadow: 0 0 8px rgba(224, 90, 90, 0.5);
}

.progress-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-semi);
  color: var(--text-secondary);
  white-space: nowrap;
}

.timer-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--glass-bg);
  border: var(--glass-border);
  font-size: var(--text-sm);
  font-weight: var(--fw-semi);
  color: var(--text-secondary);
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.timer-badge svg { width: 14px; height: 14px; }
.timer-badge.warning { color: #f59e0b; border-color: rgba(245,158,11,0.4); background: rgba(245,158,11,0.08); }
.timer-badge.danger  { color: var(--brand); border-color: rgba(224,90,90,0.4); background: var(--brand-dim); animation: q-pulse 0.8s ease infinite; }
.timer-badge.hidden  { opacity: 0; pointer-events: none; }

@keyframes q-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

/* Badges on question */
.q-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.badge {
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: var(--fw-semi);
  letter-spacing: 0.02em;
}

.badge-year  { background: var(--brand-dim); color: var(--brand); border: 1px solid rgba(224,90,90,0.2); }
.badge-type  { background: var(--glass-bg); color: var(--text-secondary); border: var(--glass-border); }
.badge-diff  { background: var(--glass-bg); color: var(--text-secondary); border: var(--glass-border); }
.badge-diff[data-diff="Easy"]   { background: rgba(34,197,94,0.1);  color: #4ade80; border-color: rgba(34,197,94,0.2); }
.badge-diff[data-diff="Hard"]   { background: var(--brand-dim);     color: var(--brand); border-color: rgba(224,90,90,0.2); }
.badge-topic  { background: rgba(91,140,255,0.1); color: #7aa7ff; border: 1px solid rgba(91,140,255,0.2); }
.badge-skipped { background: var(--glass-bg); color: var(--text-tertiary); border: var(--glass-border); }

/* Question text */
.question-text {
  font-size: var(--text-md);
  font-weight: var(--fw-normal);
  line-height: 1.75;
  color: var(--text-primary);
  white-space: pre-wrap;
  margin-bottom: 22px;
}

/* Options */
.options-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-btn {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: var(--glass-border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: all var(--dur-mid) var(--ease-spring);
  animation: q-fade-up 0.4s var(--ease-spring) both;
}

.option-btn:nth-child(1) { animation-delay: 0.05s; }
.option-btn:nth-child(2) { animation-delay: 0.10s; }
.option-btn:nth-child(3) { animation-delay: 0.15s; }
.option-btn:nth-child(4) { animation-delay: 0.20s; }
.option-btn:nth-child(5) { animation-delay: 0.25s; }

.option-btn:hover:not(:disabled) {
  background: var(--glass-bg-hover);
  border-color: rgba(255,255,255,0.18);
  transform: translateX(4px) scale(1.01);
  box-shadow: var(--glass-shadow);
}

.option-btn.selected { border-color: rgba(91,140,255,0.4); background: rgba(91,140,255,0.08); color: #7aa7ff; }
.option-btn.correct  { border-color: rgba(34,197,94,0.4);  background: rgba(34,197,94,0.08);  color: #4ade80; }
.option-btn.wrong    { border-color: rgba(224,90,90,0.4);   background: var(--brand-dim);      color: #ff8a8a; }
.option-btn:disabled { cursor: default; transform: none; }

.opt-letter {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255,255,255,0.07);
  border: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  transition: all var(--dur-fast) var(--ease);
}

.option-btn.selected .opt-letter { background: #5b8cff; border-color: #5b8cff; color: #fff; }
.option-btn.correct  .opt-letter { background: #22c55e; border-color: #22c55e; color: #fff; }
.option-btn.wrong    .opt-letter { background: var(--brand); border-color: var(--brand); color: #fff; }

.quiz-nav {
  display: flex;
  gap: 10px;
}

.quiz-nav .btn-ghost    { flex: 1; }
.quiz-nav .btn-primary  { flex: 2; }

/* ─────────────────────────────────────────────────────────────────
   RESULTS SCREEN
───────────────────────────────────────────────────────────────── */

.results-hero {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

/* Score ring */
.score-ring-wrap { position: relative; flex-shrink: 0; }
.score-ring { width: 110px; height: 110px; transform: rotate(-90deg); }
.ring-bg   { fill: none; stroke: rgba(255,255,255,0.06); stroke-width: 8; }
.ring-fill {
  fill: none;
  stroke: var(--brand);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s var(--ease);
}

.score-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.score-num {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 26px;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
}

.score-denom { font-size: 11px; color: var(--text-tertiary); }

.score-details { flex: 1; }

.results-title {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: var(--tracking-tight);
  margin-bottom: 12px;
  color: var(--text-primary);
}

.score-pills { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 10px; }

.pill {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: var(--fw-semi);
}

.pill-green { background: rgba(34,197,94,0.1);  color: #4ade80; }
.pill-red   { background: var(--brand-dim);      color: #ff8a8a; }
.pill-grey  { background: var(--glass-bg);       color: var(--text-secondary); border: var(--glass-border); }

.accuracy-line { font-size: var(--text-sm); color: var(--text-secondary); }
.accuracy-line strong { color: var(--text-primary); }

/* ─── Analysis sections ──────────────────────────────────────────── */

.analysis-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-brand);
  font-weight: var(--fw-semi);
  font-size: var(--text-md);
  letter-spacing: var(--tracking-snug);
  color: var(--text-primary);
  padding-bottom: 12px;
  border-bottom: var(--glass-border);
}

.section-title svg { width: 18px; height: 18px; color: var(--brand); }

/* Bar chart (year performance) */
.bar-chart { display: flex; flex-direction: column; gap: 9px; }

.bar-row {
  display: grid;
  grid-template-columns: 52px 1fr 44px;
  align-items: center;
  gap: 10px;
}

.bar-label { font-size: 12px; color: var(--text-secondary); font-weight: var(--fw-medium); text-align: right; }

.bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 100px;
  transition: width 0.8s var(--ease);
}

.bar-fill.low    { background: var(--brand); }
.bar-fill.medium { background: #f59e0b; }
.bar-fill.high   { background: #22c55e; }
.bar-track.flex-bar { flex: 1; }

.bar-pct { font-size: 12px; font-weight: var(--fw-semi); color: var(--text-secondary); }

/* Weak items */
.weak-list { display: flex; flex-direction: column; gap: 8px; }

.weak-item {
  padding: 14px 16px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast);
}

.weak-item.severity-high   { border-left: 3px solid var(--brand); }
.weak-item.severity-medium { border-left: 3px solid #f59e0b; }
.weak-item.severity-low    { border-left: 3px solid #22c55e; }

.weak-item-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.weak-name { font-size: var(--text-md); font-weight: var(--fw-semi); color: var(--text-primary); }
.weak-ncert { font-size: 12px; color: var(--text-tertiary); margin-top: 3px; line-height: 1.4; }

.weak-badge {
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

.severity-high   .weak-badge { background: var(--brand-dim); color: var(--brand); }
.severity-medium .weak-badge { background: rgba(245,158,11,0.1); color: #f59e0b; }
.severity-low    .weak-badge { background: rgba(34,197,94,0.1); color: #4ade80; }

.weak-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.weak-bar-row .bar-track { flex: 1; }

/* Recommendations */
.reco-list { display: flex; flex-direction: column; gap: 8px; }

.reco-item {
  display: flex;
  gap: 0;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: background var(--dur-fast);
}

.reco-item:hover { background: var(--glass-bg-hover); }

.reco-accent {
  width: 3px;
  flex-shrink: 0;
  background: var(--reco-color, var(--brand));
}

.reco-body { padding: 14px 16px; }

.reco-title {
  font-size: var(--text-md);
  font-weight: var(--fw-semi);
  color: var(--text-primary);
  margin-bottom: 6px;
}

.reco-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.65;
}

.reco-text strong { color: var(--text-primary); }

/* Review list */
.review-list { display: flex; flex-direction: column; gap: 12px; }

.review-item {
  padding: 18px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
}

.review-item.was-wrong   { border-left: 3px solid var(--brand); }
.review-item.was-skipped { border-left: 3px solid rgba(255,255,255,0.15); }

.review-q-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }

.review-q-text {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-primary);
  white-space: pre-wrap;
  margin-bottom: 14px;
}

.review-answers { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }

.review-ans-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: var(--text-sm);
}

.review-ans-label { color: var(--text-tertiary); min-width: 100px; font-size: 11px; font-weight: var(--fw-semi); text-transform: uppercase; letter-spacing: 0.05em; }
.review-ans-val   { color: var(--text-primary); }
.review-ans-val.correct { color: #4ade80; }
.review-ans-val.wrong   { color: #ff8a8a; }

.review-explanation {
  padding: 12px 14px;
  background: rgba(91,140,255,0.06);
  border-radius: 8px;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 10px;
}

.expl-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7aa7ff;
  margin-bottom: 5px;
}

.review-ncert {
  font-size: 12px;
  color: var(--text-tertiary);
  padding-top: 8px;
  border-top: var(--glass-border);
}

/* Results actions */
.results-actions {
  display: flex;
  gap: 10px;
  padding-top: 8px;
}

.results-actions .btn-ghost   { flex: 1; }
.results-actions .btn-primary { flex: 2; }

/* Empty state */
.empty-state {
  padding: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

/* ─────────────────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  #quiz-app { padding: 24px var(--sp-3) 64px; }
  .glass-card { padding: 20px 16px; }
  .results-hero { gap: 16px; justify-content: center; text-align: center; }
  .score-pills { justify-content: center; }
  .setup-header { flex-direction: column; text-align: center; align-items: center; }
}