@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400;1,6..72,500&family=IBM+Plex+Mono:wght@400;500;600&family=Geist:wght@300;400;500;600;700&display=swap');

/* ── Direction A · Editorial — design tokens ── */
:root {
  --bg:          #F4EFE4;
  --paper:       #FAF6EB;
  --ink:         #1B2230;
  --ink-2:       #2C3344;
  --muted:       #6F6A5E;
  --hair:        rgba(27,34,48,0.10);
  --hair-2:      rgba(27,34,48,0.18);
  --accent:      #B23A3A;
  --accent-2:    #2D5F4A;
  --good:        #2D5F4A;
  --bad:         #B23A3A;
  --warn:        #B68A3E;
  --serif:       'Newsreader', Georgia, serif;
  --sans:        'Geist', 'Helvetica Neue', Helvetica, sans-serif;
  --mono:        'IBM Plex Mono', ui-monospace, Menlo, monospace;

  /* legacy aliases for JS-rendered HTML that refs these vars */
  --bg-elev:      var(--paper);
  --surface:      var(--paper);
  --surface-2:    var(--bg);
  --border:       var(--hair);
  --border-strong: var(--hair-2);
  --text:         var(--ink);
  --accent-dark:  #8f2c2c;
  --accent-soft:  rgba(178,58,58,0.08);
  --accent-ring:  rgba(178,58,58,0.16);
  --good-bg:      rgba(45,95,74,0.08);
  --good-text:    #2D5F4A;
  --bad-bg:       rgba(178,58,58,0.08);
  --bad-text:     #B23A3A;
  --warn-bg:      rgba(182,138,62,0.10);
  --shadow:       0 1px 3px rgba(27,34,48,0.05), 0 4px 18px rgba(27,34,48,0.05);
  --radius:       14px;
  --radius-sm:    10px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  min-height: 100vh;
}

/* Subtle editorial baseline rule texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: var(--bg);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 23px,
    var(--hair) 23px,
    var(--hair) 24px
  );
}

/* ── Layout ── */
.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 32px 22px 96px;
}

/* ── Typography utilities ── */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.kicker::before {
  content: "";
  width: 14px;
  height: 1.5px;
  background: var(--accent);
  display: inline-block;
  flex-shrink: 0;
}

.label-eyebrow {
  font-family: var(--sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 10.5px;
  color: var(--muted);
  display: block;
}

/* ── Header card wrapper ── */
.page-header {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 18px 22px 0;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

/* ── Header ── */
header.topbar {
  display: block;
  margin-bottom: 0;
  padding-bottom: 4px;
  padding-right: 48px;
}

.topbar-right-stack {
  position: absolute;
  top: 18px;
  right: 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.topbar-action {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}

header.topbar h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}
header.topbar h1 em {
  font-style: italic;
  font-weight: 400;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

header.topbar a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
}
header.topbar a:hover { color: var(--ink); }
header.topbar h1 a { font-size: inherit; color: inherit; }

.topbar-kicker {
  display: block;
  margin-bottom: 6px;
  white-space: nowrap;
}
.topbar-kicker::before {
  margin-right: 10px;
}

/* Thick rule + metadata strip below header */
.topbar-rule {
  height: 2px;
  background: var(--ink);
  opacity: 0.85;
  margin: 0 0 0;
}
.topbar-meta {
  display: flex;
  justify-content: space-between;
  white-space: nowrap;
  padding: 7px 0 20px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
h3 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  margin: 18px 0 8px;
  letter-spacing: -0.005em;
}
p { margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }

/* ── Cards ── */
.card {
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.12s;
}
.btn:hover:not(:disabled) { opacity: 0.84; }
.btn:active:not(:disabled) { opacity: 0.72; }
.btn:disabled { opacity: 0.38; cursor: not-allowed; }

.btn.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hair-2);
}
.btn.secondary:hover:not(:disabled) {
  background: var(--hair);
  border-color: var(--ink);
}

.btn.danger { background: var(--bad); color: #fff; }
.btn.danger:hover:not(:disabled) { opacity: 0.84; }

/* ── Menu tiles (home page action rows) ── */
.menu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 0;
}

.menu-tile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: border-color 0.12s, background 0.12s;
}
.menu-tile:hover { border-color: var(--hair-2); background: var(--bg); }
.menu-tile .tile-body { flex: 1; }
.menu-tile h3 {
  margin: 0 0 2px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.menu-tile p { margin: 0; color: var(--muted); font-size: 13px; }
.tile-arrow {
  flex-shrink: 0;
  opacity: 0.35;
}
.tile-tag {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
  flex-shrink: 0;
}

/* Section label above groups */
.section-label {
  font-family: var(--sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 10.5px;
  color: var(--muted);
  margin: 20px 0 8px;
  display: block;
}

/* ── Form elements ── */
label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

select, input[type="number"], input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--hair-2);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  transition: border-color 0.12s, box-shadow 0.12s;
}
select:focus, input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.form-row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.form-row > * { flex: 1; min-width: 160px; }
.form-row .btn { flex: 0 0 auto; }

/* ── Mode buttons ── */
.mode-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.mode-btn {
  padding: 6px 14px;
  border: 1px solid var(--hair-2);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--sans);
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s, color 0.1s;
  white-space: nowrap;
}
.mode-btn:hover { border-color: var(--ink); color: var(--ink); }
.mode-btn.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ── Question view ── */
.stem {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.48;
  margin-bottom: 20px;
  color: var(--ink-2);
  white-space: pre-wrap;
}

.q-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

/* Answer options */
.options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }

.option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  text-align: left;
  font-family: var(--serif);
  font-size: 16px;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
  min-height: 52px;
  width: 100%;
}
.option:hover:not(:disabled) { border-color: var(--hair-2); background: var(--bg); }
.option:disabled { cursor: default; }

.option .letter {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--hair-2);
  color: var(--ink);
}

.option.selected { border-color: var(--ink); }
.option.selected .letter { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.option.correct { border-color: var(--good); background: rgba(45,95,74,0.06); }
.option.correct .letter { background: var(--good); color: #fff; border-color: var(--good); }

.option.incorrect { border-color: var(--bad); background: rgba(178,58,58,0.06); }
.option.incorrect .letter { background: var(--bad); color: #fff; border-color: var(--bad); }

.option.muted-correct { border-color: var(--good); background: rgba(45,95,74,0.04); opacity: 0.7; }
.option.muted-correct .letter { background: var(--good); color: #fff; border-color: var(--good); }

/* ── Flag button ── */
.flag-btn {
  background: transparent;
  border: 1px solid var(--hair-2);
  color: var(--muted);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-family: var(--sans);
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.flag-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Confidence row ── */
.confidence-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}
.conf-btn {
  padding: 6px 14px;
  border: 1px solid var(--hair-2);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--sans);
  cursor: pointer;
  transition: border-color 0.1s, color 0.1s;
}
.conf-btn:hover:not(:disabled) { border-color: var(--ink); color: var(--ink); }
.conf-btn.active { background: var(--ink); border-color: var(--ink); color: var(--paper); transition: none; }
.conf-btn:disabled { cursor: default; opacity: 0.55; }

/* ── Feedback / explanation ── */
.feedback {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.6;
  white-space: pre-wrap;
  font-family: var(--serif);
}
.feedback.good { background: rgba(45,95,74,0.07); color: var(--good); border: 1px solid rgba(45,95,74,0.18); }
.feedback.bad  { background: rgba(178,58,58,0.07); color: var(--bad);  border: 1px solid rgba(178,58,58,0.15); }
.feedback strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── History block ── */
.history-block {
  margin-top: 16px;
  padding: 10px 14px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--muted);
  background: var(--bg);
}
.history-block strong { color: var(--ink); }
.history-row { padding: 3px 0; }
.history-row.correct strong { color: var(--good); }
.history-row.wrong   strong { color: var(--bad); }

/* ── Question actions bar ── */
.q-actions {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.q-actions-left, .q-actions-right { display: flex; gap: 6px; }
@media (max-width: 480px) {
  .q-actions { flex-wrap: nowrap; gap: 6px; }
  .q-actions .btn { padding: 10px 12px; font-size: 13px; }
}

/* ── Session nav grid ── */
#q-nav-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
}
.nav-q {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
  border: 1px solid var(--hair-2);
  background: var(--paper);
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  transition: box-shadow 0.1s;
}
.nav-q:hover { border-color: var(--ink); color: var(--ink); }
.nav-q-correct   { background: rgba(45,95,74,0.10);  border-color: var(--good); color: var(--good); }
.nav-q-wrong     { background: rgba(178,58,58,0.10); border-color: var(--bad);  color: var(--bad); }
.nav-q-skipped   { opacity: 0.38; }
.nav-q-unanswered { border-color: var(--ink); color: var(--ink); }
.nav-q-current   { box-shadow: 0 0 0 2px var(--ink); }
.nav-q-answered  { border-color: var(--ink); color: var(--ink); background: rgba(27,34,48,0.07); }
.nav-q-flagged   { background: rgba(182,138,62,0.12); border-color: var(--warn); color: var(--warn); }

/* ── Stats grid ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}
.stat {
  padding: 16px 14px;
  background: var(--bg);
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  text-align: center;
}
.stat .num {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
  line-height: 1;
}
.stat .lbl {
  font-size: 11px;
  color: var(--muted);
  margin-top: 5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  font-family: var(--sans);
}

/* ── Chart canvas ── */
#chart { width: 100%; height: 260px; display: block; }

/* ── Benchmark / topic table ── */
table.topic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.topic-table th, table.topic-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--hair);
}
table.topic-table th {
  font-weight: 600;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  font-family: var(--sans);
}
table.topic-table .right { text-align: right; }
.bar {
  display: inline-block;
  height: 5px;
  background: var(--accent);
  border-radius: 3px;
  vertical-align: middle;
  margin-right: 6px;
}
.bar.empty { background: var(--hair); }

/* ── Coverage bar ── */
.coverage-total { margin-bottom: 22px; }
.coverage-total-bar {
  position: relative;
  height: 10px;
  background: var(--hair);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 14px;
}
.coverage-total-bar-correct {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: var(--good);
  border-radius: 5px 0 0 5px;
  transition: width 0.4s ease;
}
.coverage-total-bar-wrong {
  position: absolute;
  top: 0; bottom: 0;
  background: var(--bad);
  transition: width 0.4s ease, left 0.4s ease;
}
.coverage-total-stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: baseline;
}
.coverage-total-main {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
}
.coverage-total-main span {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
  margin-left: 4px;
}
.coverage-total-pill {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 500;
  font-family: var(--sans);
}
.coverage-total-pill.correct { background: rgba(45,95,74,0.10);  color: var(--good); }
.coverage-total-pill.wrong   { background: rgba(178,58,58,0.10); color: var(--bad); }
.coverage-total-pill.unseen  { background: var(--hair); color: var(--muted); }

/* ── Doughnut charts ── */
.doughnut-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 20px 16px;
}
.doughnut-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.doughnut-wrap {
  position: relative;
  width: 150px;
  height: 150px;
}
.doughnut-wrap canvas { display: block; }
.doughnut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.doughnut-pct {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
}
.doughnut-pct-label {
  font-size: 10px;
  color: var(--muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--sans);
}
.doughnut-name {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  color: var(--ink);
  line-height: 1.3;
  max-width: 150px;
}
.doughnut-empty .doughnut-pct { color: var(--muted); font-size: 13px; font-weight: 400; }

/* ── Legend ── */
.legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--sans);
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Nav row ── */
.nav-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

/* ── Notices ── */
.notice {
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid rgba(182,138,62,0.22);
}
.error {
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--bad-bg);
  color: var(--bad);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid rgba(178,58,58,0.18);
}

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 8px;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Mock exam topbar ── */
.exam-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 12px 20px;
  margin-bottom: 20px;
  gap: 16px;
  box-shadow: var(--shadow);
}

.timer {
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.timer-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(178,58,58,0.16);
  flex-shrink: 0;
}
.timer.urgent { color: var(--bad); }
.timer.urgent .timer-dot { background: var(--bad); box-shadow: 0 0 0 4px rgba(178,58,58,0.28); }

.exam-progress { font-size: 13px; color: var(--muted); text-align: center; }
.exam-progress strong { color: var(--ink); }

.progress-bar-outer {
  width: 100%;
  height: 3px;
  background: var(--hair);
  border-radius: 2px;
  margin-top: 6px;
}
.progress-bar-inner {
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.2s;
}

/* Mock setup info grid */
.setup-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin: 20px 0;
}
.setup-info-item {
  background: var(--bg);
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--sans);
}
.setup-info-item strong {
  display: block;
  font-family: var(--mono);
  font-size: 18px;
  color: var(--ink);
  margin-bottom: 2px;
  font-weight: 600;
}

/* Results */
.result-hero {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 12px 0 4px;
}
.result-score {
  font-family: var(--mono);
  font-size: 48px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
}
.result-pct {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 500;
  color: var(--muted);
}

.review-list { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }
.review-item {
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 14px;
  background: var(--paper);
  margin-top: 10px;
}
.review-topic {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 6px;
}
.review-stem {
  margin-bottom: 10px;
  line-height: 1.5;
  white-space: pre-wrap;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-2);
}
.review-answer {
  padding: 7px 10px;
  border-radius: 6px;
  margin-bottom: 8px;
  font-size: 13px;
}
.review-answer.wrong { background: rgba(178,58,58,0.07); color: var(--bad); }
.review-answer.not-attempted { background: var(--warn-bg); color: var(--warn); }
.review-explanation {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  border-top: 1px solid var(--hair);
  padding-top: 8px;
  margin-top: 4px;
  white-space: pre-wrap;
}

.q-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}
.q-label::before { content: ""; width: 14px; height: 1.5px; background: var(--accent); display: inline-block; }

.nav-buttons { display: flex; gap: 10px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.unanswered-warning { font-size: 13px; color: var(--muted); margin-left: auto; }

.mock-flag-btn {
  background: transparent;
  border: 1px solid var(--hair-2);
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-family: var(--sans);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.12s, color 0.12s;
}
.mock-flag-btn:hover { border-color: var(--warn); color: var(--warn); }
.mock-flag-btn.active { background: rgba(182,138,62,0.10); border-color: var(--warn); color: var(--warn); }

/* Summary */
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .summary-grid { grid-template-columns: 1fr; } }
.topic-list { list-style: none; padding: 0; margin: 0; }
.topic-list li { padding: 6px 0; border-bottom: 1px solid var(--hair); font-size: 14px; font-family: var(--serif); }
.topic-list li:last-child { border-bottom: none; }

/* ── Login page ── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-box {
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}
.login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.login-logo .login-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.login-logo .login-kicker::before {
  content: "";
  width: 14px;
  height: 1.5px;
  background: var(--accent);
  display: inline-block;
}
.login-logo h1 {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.login-logo p { margin: 0; font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }

.tab-row {
  display: flex;
  border: 1px solid var(--hair-2);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 28px;
}
.tab-btn {
  flex: 1;
  padding: 9px;
  font-size: 13px;
  font-family: var(--sans);
  font-weight: 500;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tab-btn.active { background: var(--ink); color: var(--paper); }

.form-field { margin-bottom: 16px; }
.form-field label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.form-field input {
  width: 100%;
  padding: 11px 14px;
  font-size: 15px;
  font-family: var(--sans);
  background: var(--bg);
  border: 1px solid var(--hair-2);
  border-radius: var(--radius-sm);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  box-sizing: border-box;
}
.form-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }

.submit-btn {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--sans);
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-top: 4px;
  transition: opacity 0.15s;
}
.submit-btn:hover { opacity: 0.84; }
.submit-btn:disabled { opacity: 0.38; cursor: default; }

.login-error {
  background: var(--bad-bg);
  color: var(--bad);
  border: 1px solid rgba(178,58,58,0.20);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 16px;
  display: none;
}
.login-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 16px;
  text-align: center;
  line-height: 1.5;
}

/* ── Register checkboxes ── */
.register-terms {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
  margin-bottom: 4px;
}
.register-terms.visible { display: flex; }
.check-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  text-transform: none;
  letter-spacing: normal;
  font-weight: normal;
}
.check-row input[type="checkbox"] {
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}
.check-row a { color: var(--accent); text-decoration: underline; }

/* ── Get app banner ── */
.get-app-banner {
  display: block;
  text-align: center;
  padding: 8px 16px;
  font-size: 11px;
  color: var(--muted);
  text-decoration: underline;
  border-bottom: 1px solid var(--hair);
}
.get-app-banner:hover { color: var(--ink); }

/* ── App footer ── */
.app-footer {
  text-align: center;
  padding: 20px 24px;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
  border-top: 1px solid var(--hair);
  margin-top: 40px;
}
.app-footer a { color: var(--muted); text-decoration: underline; }
.app-footer a:hover { color: var(--ink); }

/* ── Privacy / prose pages ── */
.prose-wrap {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 40px 24px 60px;
}
.prose-box {
  width: 100%;
  max-width: 640px;
  background: var(--paper);
  border-radius: 14px;
  border: 1px solid var(--hair);
  padding: 28px 24px 32px;
}
.prose-logo {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 32px;
}
.prose-logo h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.prose-back {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.prose-back:hover { color: var(--ink); }
.prose-box h2 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 500;
  margin: 0 0 4px;
  color: var(--ink);
}
.prose-meta {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 32px;
}
.prose-box h3 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin: 28px 0 8px;
}
.prose-box p, .prose-box ul, .prose-box li {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.7;
}
.prose-box ul { padding-left: 20px; margin: 8px 0; }
.prose-box li { margin-bottom: 4px; }
.prose-box a { color: var(--accent); }

/* ── Get app page ── */
.get-app-platform {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--card);
  border-radius: 10px;
  border: 1px solid var(--hair);
}
.get-app-platform-heading {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.get-app-icon {
  font-size: 16px;
  opacity: 0.7;
}
.get-app-steps {
  padding-left: 20px;
  margin: 10px 0;
}
.get-app-steps li {
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.6;
}
.get-app-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
}

/* ── Feedback modal ── */
.feedback-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(27,34,48,0.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.feedback-modal-overlay.open { display: flex; }
.feedback-modal {
  background: var(--paper);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}
.feedback-modal h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
}
.feedback-modal p {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.feedback-modal textarea {
  width: 100%;
  min-height: 110px;
  padding: 11px 14px;
  font-size: 14px;
  font-family: var(--sans);
  background: var(--bg);
  border: 1px solid var(--hair-2);
  border-radius: var(--radius-sm);
  color: var(--ink);
  outline: none;
  resize: vertical;
  box-sizing: border-box;
  transition: border-color 0.15s;
}
.feedback-modal textarea:focus { border-color: var(--accent); }
.feedback-modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  justify-content: flex-end;
}
.feedback-cancel-btn {
  padding: 10px 18px;
  font-size: 13px;
  font-family: var(--sans);
  background: transparent;
  border: 1px solid var(--hair-2);
  border-radius: var(--radius-sm);
  color: var(--muted);
  cursor: pointer;
}
.feedback-cancel-btn:hover { color: var(--ink); border-color: var(--hair); }
.feedback-submit-btn {
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--sans);
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity 0.15s;
}
.feedback-submit-btn:hover { opacity: 0.82; }
.feedback-submit-btn:disabled { opacity: 0.38; cursor: default; }
.feedback-success {
  text-align: center;
  padding: 12px 0 4px;
  font-size: 14px;
  color: var(--good);
}
.app-footer-feedback {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--sans);
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}
.app-footer-feedback:hover { color: var(--ink); }