:root {
  --bg: #0b0d10;
  --panel: #14181d;
  --panel-2: #1a2026;
  --border: #262d35;
  --text: #e7ecf1;
  --text-dim: #9aa7b4;
  --accent: #d28a4a;
  --accent-2: #f0ad64;
  --good: #4ade80;
  --bad: #f87171;
  --warn: #fbbf24;
  --radius: 8px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  word-break: break-word;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.timer {
  font-family: var(--mono);
  background: var(--panel-2);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

.timer.warning { color: var(--warn); border-color: var(--warn); }
.timer.critical { color: var(--bad); border-color: var(--bad); }

.inline-timer {
  display: block;
  text-align: right;
  font-size: 1rem;
  margin-bottom: 1rem;
  white-space: nowrap;
}

.home-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
}
.home-link:hover { color: var(--text); }

.view {
  max-width: min(900px, 100vw);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
  overflow-x: hidden;
}

.view > * {
  max-width: 100%;
  overflow-wrap: break-word;
}

.site-footer {
  padding: 1rem;
  text-align: center;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

/* ============ Landing ============ */

.hero { text-align: center; margin-bottom: 2.5rem; }
.hero h1 { font-size: 2rem; margin: 0 0 0.5rem; letter-spacing: -0.01em; }
.hero p { color: var(--text-dim); margin: 0; }

.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.mode-card {
  display: block;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.08s ease, border-color 0.15s ease;
}

.mode-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.mode-card h3 { margin: 0 0 0.5rem; color: var(--accent-2); }
.mode-card p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }

.dashboard {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.dashboard h2 { margin: 0 0 1rem; font-size: 1.1rem; }

.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.dash-metric {
  background: var(--panel-2);
  padding: 1rem;
  border-radius: var(--radius);
}
.dash-metric .label {
  color: var(--text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.dash-metric .value {
  font-size: 1.5rem;
  font-weight: 600;
  font-family: var(--mono);
  margin-top: 0.25rem;
}
.dash-metric .value.good { color: var(--good); }
.dash-metric .value.bad { color: var(--bad); }

/* ============ Question card ============ */

.question-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.question-meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.question-stem {
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
}

.choices {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.choice {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 1rem;
  margin-bottom: 0.5rem;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.1s ease, background 0.1s ease;
}

.choice:hover { border-color: var(--accent); }
.choice.selected { border-color: var(--accent); background: #1f262e; }
.choice.correct { border-color: var(--good); background: #0f2418; }
.choice.incorrect { border-color: var(--bad); background: #2a1414; }

.choice-letter {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--accent-2);
  min-width: 1.25rem;
}

.choice input { margin-top: 0.35rem; accent-color: var(--accent); }

.feedback {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--panel-2);
  border-left: 3px solid var(--accent);
}

.feedback h4 { margin: 0 0 0.5rem; }
.feedback p { margin: 0 0 0.5rem; }

.rationales { margin-top: 0.5rem; }
.rationales li { margin-bottom: 0.4rem; }
.rationales .correct-mark { color: var(--good); }
.rationales .wrong-mark { color: var(--bad); }

.controls {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

button, .btn {
  background: var(--accent);
  color: #0b0d10;
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.1s ease;
}

button:hover, .btn:hover { background: var(--accent-2); }
button:disabled { background: var(--border); color: var(--text-dim); cursor: not-allowed; }

button.secondary, .btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
button.secondary:hover, .btn.secondary:hover { border-color: var(--accent); background: var(--panel-2); }

.question-counter {
  color: var(--text-dim);
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* ============ Filters (practice) ============ */

.filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.filters select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
}

/* ============ Results ============ */

.results-score {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.score-big {
  font-size: 4rem;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}

.score-big.pass { color: var(--good); }
.score-big.fail { color: var(--bad); }

.score-label { color: var(--text-dim); font-size: 0.9rem; margin-top: 0.25rem; }

.verdict {
  margin-top: 1rem;
  font-size: 1.2rem;
  font-weight: 600;
}
.verdict.pass { color: var(--good); }
.verdict.fail { color: var(--bad); }

.domain-bars {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.domain-bars h3 { margin: 0 0 1rem; }

.domain-row { margin-bottom: 0.75rem; }
.domain-row .domain-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}
.bar {
  height: 10px;
  background: var(--panel-2);
  border-radius: 999px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
}
.bar-fill.good { background: var(--good); }
.bar-fill.bad { background: var(--bad); }

.review-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.review-section h3 { margin: 0 0 1rem; }

.review-item {
  background: var(--panel-2);
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  border-left: 3px solid var(--good);
}
.review-item.wrong { border-left-color: var(--bad); }

.review-stem { margin: 0 0 0.5rem; font-weight: 500; }
.review-detail { color: var(--text-dim); font-size: 0.9rem; margin: 0.5rem 0 0; }

/* ============ Mobile ============ */

@media (max-width: 600px) {
  .site-header { padding: 0.75rem 1rem; }
  .brand { font-size: 0.95rem; }
  .view { padding: 1.25rem 0.75rem 4rem; }
  .hero h1 { font-size: 1.5rem; }
  .score-big { font-size: 3rem; }
  .filters { flex-direction: column; }
  .filters select { width: 100%; }
  .inline-timer { margin-left: 0; align-self: flex-end; }
  .question-card { padding: 1rem; }
  .question-meta { font-size: 0.8rem; }
  .choice { padding: 0.75rem; }
}

/* ============ Utility ============ */

[hidden] { display: none !important; }

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-dim);
}

/* ============================================================
   CCAR-P additions — section callouts, multi-response, sections
   ============================================================ */

/* ---- Section callout: the domain + objective stamp on every item ---- */

.section-callout {
  border-left: 3px solid var(--accent);
  background: var(--panel-2);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.7rem 0.9rem;
  margin: -0.25rem 0 1.1rem;
}

.callout-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.85rem;
  font-size: 0.85rem;
}

.callout-pos {
  font-family: var(--mono);
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.callout-domain {
  color: var(--accent-2);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.callout-diff { color: var(--text-dim); margin-left: auto; }

.callout-objective {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.45;
}

.callout-objective-label {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  flex-shrink: 0;
  padding-top: 0.12rem;
}

/* ---- Response-count instruction + multi-response choices ---- */

.select-count {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 0.75rem;
}
.select-count.multi { color: var(--warn); }

.select-warn {
  color: var(--warn);
  font-size: 0.9rem;
  margin: -0.75rem 0 1rem;
}

.choice-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--accent-2);
  background: var(--bg);
}
.choice-mark.box { border-radius: 4px; }
.choice.selected .choice-mark { border-color: var(--accent); }
.choice.correct .choice-mark { border-color: var(--good); color: var(--good); }
.choice.incorrect .choice-mark { border-color: var(--bad); color: var(--bad); }

.choice-text { flex: 1; }

.feedback.is-correct { border-left-color: var(--good); }
.feedback.is-wrong { border-left-color: var(--bad); }
.feedback .answer-line { font-family: var(--mono); font-size: 0.9rem; color: var(--text-dim); }

/* ---- Exam item navigator ---- */

.nav-grid-wrap {
  margin-top: 2rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.nav-grid-wrap h3 { margin: 0 0 0.75rem; font-size: 1rem; }

.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(2.4rem, 1fr));
  gap: 0.35rem;
}

.nav-cell {
  background: var(--panel-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
}
.nav-cell:hover { background: var(--panel-2); border-color: var(--accent); }
.nav-cell.done { background: var(--accent); color: #0b0d10; border-color: var(--accent); }
.nav-cell.partial { border-color: var(--warn); color: var(--warn); background: var(--panel-2); }
.nav-cell.current { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.nav-cell.flag { box-shadow: inset 0 -3px 0 var(--warn); }

button.danger { background: var(--bad); color: #14181d; }
button.danger:hover { background: #fca5a5; }
button.flagged { background: var(--warn); color: #14181d; }

/* ---- Section grid on the landing page ---- */

.section-grid { margin-bottom: 3rem; }
.section-grid h2 { margin: 0 0 1rem; font-size: 1.1rem; }

.section-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.section-card {
  display: block;
  padding: 1.1rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.08s ease, border-color 0.15s ease;
}
.section-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.section-card-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.section-card h3 { margin: 0.3rem 0 0.6rem; font-size: 1rem; line-height: 1.3; }

.section-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.8rem;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.section-card-bank {
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.section-card-mastery { margin-top: 0.6rem; font-size: 0.8rem; }
.section-card-mastery.muted { color: var(--text-dim); font-style: italic; }

/* ---- Section block view ---- */

.section-header { margin-bottom: 1.5rem; }
.section-header h1 { margin: 0.35rem 0 0; font-size: 1.6rem; line-height: 1.2; }
.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.brief {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.brief h2 { margin: 0 0 0.75rem; font-size: 1.1rem; }
.brief h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.brief-summary { color: var(--text-dim); margin: 0.5rem 0 0; }

.objective-list { margin: 0; padding-left: 1.2rem; }
.objective-list li {
  margin-bottom: 0.45rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}
.obj-count {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.brief-list { margin: 0; padding-left: 1.2rem; color: var(--text-dim); }
.brief-list li { margin-bottom: 0.5rem; line-height: 1.5; }
.brief-list strong { color: var(--text); }
.brief-list.traps li::marker { color: var(--bad); }
.brief-list.refs a { color: var(--accent-2); }

.block-size {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.block-size-label {
  color: var(--text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.chip {
  background: var(--panel-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); background: var(--panel-2); }
.chip.active { background: var(--accent); color: #0b0d10; border-color: var(--accent); }

.block-score {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

/* ---- Misc ---- */

.session-tally {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.objective-bars .obj-group {
  margin: 1.25rem 0 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.drill-next {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.drill-next h3 { margin: 0 0 0.75rem; }
.drill-list { margin: 0; padding-left: 1.2rem; }
.drill-list li { margin-bottom: 0.4rem; }
.drill-list a { color: var(--accent-2); }
.drill-pct { font-family: var(--mono); color: var(--text-dim); }

.review-tag {
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
  line-height: 1.4;
}

.attempt-list { margin-top: 2rem; }
.attempt-list h2 { margin: 0 0 0.75rem; font-size: 1.1rem; }
.attempt-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1rem;
  margin-bottom: 0.4rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--good);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.88rem;
}
.attempt-row.fail { border-left-color: var(--bad); }
.attempt-row:hover { border-color: var(--accent); }
.attempt-score {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  min-width: 3.2rem;
}

.shortfall {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-align: left;
  white-space: pre-wrap;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--warn);
}

@media (max-width: 600px) {
  .section-callout { padding: 0.6rem 0.7rem; }
  .callout-diff { margin-left: 0; }
  .section-header h1 { font-size: 1.25rem; }
  .brief { padding: 1rem; }
  .objective-list li { flex-direction: column; gap: 0.15rem; }
  .nav-grid { grid-template-columns: repeat(auto-fill, minmax(2.1rem, 1fr)); }
  .nav-grid-wrap { padding: 0.9rem; }
  .block-score, .results-score { padding: 1.25rem; }
}