/* ============================================================
   SQE Specification — clean legal reference site
   ============================================================ */

:root {
  --ink: #15171a;
  --ink-soft: #2a2e34;
  --muted: #6b7280;
  --muted-soft: #9ca3af;
  --line: #e6e2d8;
  --line-strong: #d6d0c2;
  --paper: #fbf9f4;
  --paper-2: #f5f1e6;
  --accent: #7a1f1f;          /* deep oxblood — legal red */
  --accent-soft: #b65a5a;
  --gold: #b08a3e;
  --bg: #fdfcf8;
  --code: 'Söhne Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Charter', 'Iowan Old Style', 'Source Serif Pro', 'Georgia', serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

em { font-style: italic; }
strong { font-weight: 600; color: var(--ink); }

/* ============== Sidebar ============== */
#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 300px;
  height: 100vh;
  background: var(--paper);
  border-right: 1px solid var(--line);
  padding: 28px 22px 24px;
  overflow-y: auto;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.brand-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background: var(--accent);
  color: white;
  border-radius: 4px;
  display: grid;
  place-items: center;
  font-family: 'Charter', serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.brand-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.2;
}
.brand-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.nav-group { margin-bottom: 22px; }
.nav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted-soft);
  padding: 0 10px 6px;
}
nav a {
  display: block;
  padding: 6px 10px;
  margin: 1px 0;
  color: var(--ink-soft);
  border-radius: 4px;
  font-size: 13.5px;
  line-height: 1.4;
  transition: background 0.12s, color 0.12s;
}
nav a:hover {
  background: var(--paper-2);
  text-decoration: none;
  color: var(--ink);
}
nav a.active {
  background: var(--accent);
  color: white;
  font-weight: 500;
}

.source {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.source a { color: var(--ink-soft); }

/* ============== Main ============== */
main {
  margin-left: 300px;
  padding: 56px 64px 120px;
  max-width: 920px;
}

/* Hero */
.hero {
  padding-bottom: 36px;
  margin-bottom: 0;
  border-bottom: 2px solid var(--ink);
}
#blueprint {
  margin-top: 88px;
  padding-top: 56px;
  border-top: 2px solid var(--ink);
}
.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: 'Charter', serif;
  font-size: 56px;
  line-height: 1.05;
  margin: 0 0 18px;
  font-weight: 400;
  letter-spacing: -0.015em;
}
.lede {
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 64ch;
  margin: 0 0 36px;
}

.hero-stats {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--line-strong);
}
.stat {
  flex: 1;
  padding: 18px 0 0;
  border-right: 1px solid var(--line-strong);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: 'Charter', serif;
  font-size: 28px;
  color: var(--accent);
  font-weight: 600;
  line-height: 1;
}
.stat-label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}

/* Sections */
section {
  padding-top: 72px;
  margin-top: -32px;     /* anchor offset */
  scroll-margin-top: 24px;
}
section + section { padding-top: 72px; }

h2 {
  font-family: 'Charter', serif;
  font-size: 36px;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  color: var(--ink);
}
h3 {
  font-family: 'Charter', serif;
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 12px;
  color: var(--ink);
}
h4 {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 24px 0 8px;
}

p { margin: 0 0 16px; }

ul, ol {
  margin: 0 0 18px;
  padding-left: 24px;
}
ul li, ol li {
  margin-bottom: 6px;
}
ul ul, ol ul, ul ol, ol ol { margin: 6px 0; }

p.meta {
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}

/* Topic header */
.topic-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.topic-tag {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--ink);
  color: white;
  padding: 4px 8px;
  border-radius: 3px;
  flex-shrink: 0;
}
.topic-head h2 { margin: 0; }
.ch-count {
  margin-left: auto;
  flex-shrink: 0;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* Chapter lists — University of Law textbook chapters */
.chapters {
  list-style: none;
  margin: 22px 0 8px;
  padding: 0;
  counter-reset: ch;
}
.chapters li {
  counter-increment: ch;
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 6px 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  color: var(--ink-soft);
}
.chapters li:last-child { border-bottom: none; }
.chapters li::before {
  content: counter(ch);
  flex-shrink: 0;
  width: 26px;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* Reconstructed chapter — verify against the ULaw contents page */
.chapters li.tbc { color: var(--muted); }
.chapters li.tbc::after {
  content: 'verify';
  align-self: center;
  margin-left: 4px;
  font-family: 'Inter', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 3px;
  padding: 1px 5px;
}

/* Sub-headed subject (e.g. Legal System = two ULaw books) */
.book-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 34px 0 0;
}
.book-head h3 { margin: 0; }
.book-head .ch-count { align-self: center; }

/* Paper divider — between FLK1 / FLK2 / Annexes */
.paper-divider {
  margin: 96px 0 16px;
  padding: 56px 0 36px;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.paper-divider:first-of-type {
  margin-top: 0;
  padding-top: 8px;
  border-top: none;
}
.paper-label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.paper-title {
  font-family: 'Charter', serif;
  font-size: 72px;
  line-height: 1;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin: 0 0 12px;
}
.paper-desc {
  font-size: 15px;
  color: var(--muted);
  margin: 0;
  font-style: italic;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 28px 0;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 24px 24px 20px;
  position: relative;
}
.card-tag {
  position: absolute;
  top: -10px;
  left: 22px;
  background: var(--ink);
  color: white;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border-radius: 3px;
}
.card h3 { margin-top: 6px; font-size: 18px; }
.card-list {
  margin: 0;
  padding-left: 20px;
  font-size: 15px;
  color: var(--ink-soft);
}
.card-list li { margin-bottom: 4px; }

/* Callout */
.callout {
  background: var(--paper);
  border-left: 3px solid var(--accent);
  padding: 16px 22px;
  margin: 28px 0;
  font-size: 15.5px;
  color: var(--ink-soft);
  border-radius: 0 4px 4px 0;
}
.callout strong { color: var(--accent); }

/* Blueprint */
.blueprint-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 24px 0 8px;
}
.blueprint-col h3 {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}
/* Blueprint — quiet list */
.bp-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}
.bp-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 2px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--ink-soft);
}
.bp-list .pct {
  color: var(--muted);
  font-weight: 600;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.bp-ethics {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.bp-ethics-name {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}
.bp-ethics-tag {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.bp-ethics-note {
  font-family: 'Inter', sans-serif;
  font-size: 13.5px;
  color: var(--muted);
  margin: 8px 2px 0;
}

/* Mapping table */
.mapping-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
  font-size: 13.5px;
  margin: 12px 0 24px;
}
.mapping-table th {
  text-align: left;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid var(--ink);
}
.mapping-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.mapping-table td:first-child {
  font-weight: 600;
  color: var(--ink);
  width: 22%;
}
.mapping-table td:last-child {
  font-family: var(--code);
  font-size: 12px;
  color: var(--accent);
  white-space: nowrap;
  width: 28%;
}
.mapping-table tr td[rowspan]:first-child {
  background: var(--paper);
  border-right: 1px solid var(--line);
}

/* SoSC table */
.sosc-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  margin: 12px 0;
}
.sosc-table th {
  text-align: left;
  padding: 12px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
  vertical-align: bottom;
}
.sosc-table th:not(:first-child) { text-align: center; width: 22%; }
.sosc-table .th-sub {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-top: 4px;
  text-transform: none;
}
.sosc-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
}
.sosc-table td:not(:first-child) {
  text-align: center;
}
.sosc-table .check {
  color: var(--accent);
  font-weight: 600;
  font-size: 16px;
}
.sosc-table .group-row td {
  background: var(--paper-2);
  font-family: 'Charter', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  padding: 10px 14px;
}

/* Threshold */
.threshold-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.threshold-table th {
  text-align: left;
  padding: 16px 18px 16px 0;
  width: 220px;
  vertical-align: top;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}
.threshold-table td {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 16px;
}

/* Pyramid */
.pyramid {
  margin: 28px auto;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.pyramid-row {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: white;
  background: var(--ink-soft);
  padding: 14px 24px;
  text-align: center;
  border-radius: 3px;
  position: relative;
}
.pyramid-row.top { width: 30%; }
.pyramid-row.r2  { width: 50%; }
.pyramid-row.r3  { width: 70%; }
.pyramid-row.r4  { width: 90%; }
.pyramid-row.highlighted {
  background: var(--accent);
  color: white;
}
.pyramid-mark {
  position: absolute;
  right: -180px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
}
.pyramid-mark::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--accent);
}

/* Footer */
.site-footer {
  margin-top: 96px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
}

/* ============================================================
   Lesson UI (Math Academy-style player)
   ============================================================ */

.lesson-main {
  margin-left: 300px;
  padding: 56px 64px 120px;
  max-width: 880px;
}
.lesson-body { background: var(--bg); }

.hidden { display: none !important; }

/* List view */
.chapter-group { margin-bottom: 40px; }
.chapter-heading {
  font-family: 'Charter', serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 32px 0 16px;
  letter-spacing: -0.005em;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.chapter-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--paper);
  padding: 4px 8px;
  border-radius: 3px;
}
.lesson-card {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 16px 20px;
  margin-bottom: 10px;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: background 0.1s, border-color 0.1s;
}
.lesson-card:hover {
  background: #fffaf3;
  border-color: var(--accent);
}
.lesson-card-num {
  font-family: 'Charter', serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--accent);
  width: 42px;
  text-align: center;
  flex-shrink: 0;
}
.lesson-card-body { flex: 1; min-width: 0; }
.lesson-card-title {
  font-family: 'Charter', serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.3;
}
.lesson-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  color: var(--muted);
}
.lesson-source-tag {
  letter-spacing: 0.04em;
  font-style: italic;
}
.lesson-screens-tag,
.lesson-box-tag {
  background: white;
  border: 1px solid var(--line);
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.lesson-card-status {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  flex-shrink: 0;
  padding: 4px 10px;
  border-radius: 3px;
  background: white;
  border: 1px solid var(--line);
}
.status-due .lesson-card-status {
  color: var(--accent);
  border-color: var(--accent);
  background: #fbeded;
}
.status-completed .lesson-card-status {
  color: #1b6b3e;
  border-color: #1b6b3e;
  background: #eef9f2;
}
.status-mastered .lesson-card-status {
  color: white;
  border-color: var(--gold);
  background: var(--gold);
}

/* Player */
.lesson-topbar {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 0;
}
.link-btn:hover { text-decoration: underline; }
.lesson-meta {
  flex: 1;
  text-align: right;
  font-family: 'Inter', sans-serif;
}
.lesson-title {
  font-family: 'Charter', serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}
.lesson-source {
  font-size: 11px;
  color: var(--muted);
  font-style: italic;
  margin-top: 2px;
}

.lesson-progress {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.progress-dots { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}
.dot.practice { background: white; border-color: var(--line-strong); }
.dot.mastery {
  width: 14px;
  height: 14px;
  background: white;
  border: 2px solid var(--line-strong);
}
.dot.done { background: var(--accent); border-color: var(--accent); }
.dot.active {
  background: var(--ink);
  border-color: var(--ink);
  transform: scale(1.2);
}
.progress-counter {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Screen tags */
.screen-tag {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 14px;
}
.screen-tag-practice { color: var(--accent); }
.screen-tag-mastery { color: var(--gold); }

/* Teach card */
.teach-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 32px 36px;
}
.teach-title {
  font-family: 'Charter', serif;
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.teach-para {
  font-family: 'Charter', serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin: 0 0 14px;
}
.teach-para:last-of-type { margin-bottom: 24px; }

/* Practice card */
.practice-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 32px 36px;
}
.practice-topic {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.practice-stem {
  font-family: 'Charter', serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 22px;
}
.practice-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Mastery card */
.mastery-card {
  background: var(--paper);
  border: 1px solid var(--gold);
  border-left-width: 4px;
  border-radius: 6px;
  padding: 32px 36px;
}
.mastery-prompt {
  font-family: 'Charter', serif;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  margin-bottom: 12px;
  font-weight: 500;
}
.mastery-note {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
  margin: 0 0 22px;
}
.mastery-expected {
  margin-top: 22px;
  padding: 18px 22px;
  background: white;
  border-left: 3px solid var(--gold);
  border-radius: 0 4px 4px 0;
  font-family: 'Charter', serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.mastery-after {
  margin-top: 22px;
}
.mastery-self-rate {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}
.mastery-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.self-btn {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--line-strong);
  background: white;
}
.self-btn.self-yes { color: #1b6b3e; border-color: #1b6b3e; }
.self-btn.self-no { color: var(--accent); border-color: var(--accent); }
.self-btn:hover { background: var(--paper-2); }

/* Fill-in-the-blank */
.fill-input-wrap {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin-top: 8px;
}
.fill-input {
  flex: 1;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-family: 'Charter', serif;
  font-size: 16px;
  background: white;
  color: var(--ink);
  outline: none;
}
.fill-input:focus { border-color: var(--accent); }
.fill-input.correct {
  border-color: #1b6b3e;
  background: #eef9f2;
}
.fill-input.wrong {
  border-color: var(--accent);
  background: #fbeded;
}

/* Multi-select */
.option-btn.multiselect-btn { position: relative; }
.opt-checkbox {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  background: white;
  border: 2px solid var(--line-strong);
  color: transparent;
  border-radius: 3px;
}
.option-btn.multiselect-btn.selected .opt-checkbox {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}
.option-btn.multiselect-btn.correct .opt-checkbox {
  background: #1b6b3e;
  border-color: #1b6b3e;
  color: white;
}
.option-btn.multiselect-btn.wrong .opt-checkbox {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
.submit-multi {
  margin-top: 16px;
}

/* Done screen */
.muted { color: var(--muted); }

/* ============================================================
   Quiz UI
   ============================================================ */

.quiz-main {
  margin-left: 300px;
  padding: 56px 64px 120px;
  max-width: 880px;
}

.screen.hidden { display: none; }

.quiz-eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}
.quiz-main h1 {
  font-family: 'Charter', serif;
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 16px;
  font-weight: 500;
  letter-spacing: -0.015em;
}
.quiz-lede {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 0 32px;
}

.quiz-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0 48px;
}
.size-label {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.size-label select {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  background: white;
  border-radius: 4px;
  color: var(--ink);
  cursor: pointer;
}
.primary-btn {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 11px 22px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s, transform 0.05s;
}
.primary-btn:hover { background: #5e1818; }
.primary-btn:active { transform: translateY(1px); }

.recent-sessions { margin-top: 48px; }
.recent-sessions h3 {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}
.recent-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
}
.recent-table th, .recent-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.recent-table th {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  border-bottom: 2px solid var(--ink);
}
.recent-table td {
  font-variant-numeric: tabular-nums;
}
.recent-table .muted {
  color: var(--muted);
  font-style: italic;
  text-align: center;
}

/* Quiz screen progress bar */
.quiz-progress {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 28px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--muted);
}
.quiz-counter {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--ink);
}
.quiz-counter span { color: var(--accent); }
.quiz-running { display: flex; gap: 16px; }
.r-correct { color: #1b6b3e; font-weight: 600; }
.r-wrong   { color: var(--accent); font-weight: 600; }
.bar {
  flex: 1;
  height: 3px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
}

/* Quiz card */
.quiz-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 32px 36px;
  margin-bottom: 24px;
}
.quiz-topic {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 16px;
}
.quiz-stem {
  font-family: 'Charter', serif;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  margin-bottom: 24px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  text-align: left;
  font-family: 'Charter', serif;
  font-size: 16px;
  line-height: 1.5;
  background: white;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  padding: 14px 18px;
  cursor: pointer;
  color: var(--ink);
  transition: border-color 0.1s, background 0.1s, transform 0.05s;
  width: 100%;
}
.option-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: #fffaf5;
}
.option-btn:active:not(:disabled) { transform: translateY(1px); }
.option-btn:disabled { cursor: default; opacity: 0.85; }
.option-btn.correct {
  border-color: #1b6b3e;
  background: #eef9f2;
  opacity: 1;
}
.option-btn.wrong {
  border-color: var(--accent);
  background: #fbeded;
  opacity: 1;
}
.opt-label {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  background: var(--ink);
  color: white;
  padding: 3px 8px;
  border-radius: 3px;
  flex-shrink: 0;
  margin-top: 1px;
}
.option-btn.correct .opt-label { background: #1b6b3e; }
.option-btn.wrong .opt-label { background: var(--accent); }
.opt-text { flex: 1; }

/* Feedback */
.quiz-feedback {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.quiz-feedback.hidden { display: none; }
.feedback-banner {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 14px;
}
.fb-correct {
  background: #eef9f2;
  color: #1b6b3e;
  border-left: 3px solid #1b6b3e;
}
.fb-wrong {
  background: #fbeded;
  color: var(--accent);
  border-left: 3px solid var(--accent);
}
.feedback-explanation {
  font-family: 'Charter', serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  margin: 28px 0 36px;
}
.result-stat {
  padding: 24px 0;
  border-right: 1px solid var(--line-strong);
}
.result-stat:last-child { border-right: none; }
.result-num {
  font-family: 'Charter', serif;
  font-size: 38px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}
.result-label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}

.missed-heading {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 32px 0 14px;
}
.missed-list { display: flex; flex-direction: column; gap: 14px; }
.missed-item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 16px 20px;
}
.missed-topic {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
}
.missed-stem {
  font-family: 'Charter', serif;
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--ink);
}
.missed-answer {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.missed-explain {
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}
.muted { color: var(--muted); }

/* Sidebar stats */
.stat-mini {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
}
.stat-mini span {
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.reset-btn {
  margin-top: 14px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.06em;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 3px;
  cursor: pointer;
  width: 100%;
}
.reset-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Quiz body specific */
body.quiz-body { background: var(--bg); }

@media (max-width: 768px) {
  .quiz-main { margin-left: 0; padding: 40px 22px 80px; }
  .quiz-card { padding: 22px; }
  .quiz-stem { font-size: 17px; }
  .option-btn { font-size: 15px; padding: 12px 14px; }
  .quiz-main h1 { font-size: 32px; }
  .results-grid { grid-template-columns: 1fr; }
  .result-stat { border-right: none; border-bottom: 1px solid var(--line-strong); }
  .result-stat:last-child { border-bottom: none; }
}

/* Mobile menu toggle */
#menu-toggle {
  display: none;
  position: fixed;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  background: var(--ink);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 22px;
  cursor: pointer;
  z-index: 200;
}

/* ============== Responsive ============== */
@media (max-width: 1024px) {
  main { padding: 48px 36px 96px; }
  .hero h1 { font-size: 44px; }
  .pyramid-mark { display: none; }
}

@media (max-width: 768px) {
  #sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: 280px;
  }
  #sidebar.open { transform: translateX(0); }
  main { margin-left: 0; padding: 60px 22px 80px; }
  #menu-toggle { display: block; }
  .hero h1 { font-size: 36px; }
  .lede { font-size: 17px; }
  .hero-stats { flex-wrap: wrap; }
  .stat { flex: 1 1 50%; padding: 14px 0; border-bottom: 1px solid var(--line-strong); }
  .cards { grid-template-columns: 1fr; }
  .blueprint-grid { grid-template-columns: 1fr; }
  .paper-title { font-size: 52px; }
  h2 { font-size: 28px; }
  .threshold-table th { width: auto; display: block; padding-bottom: 4px; border-bottom: none; }
  .threshold-table td { display: block; padding-top: 0; }
  .mapping-table { font-size: 12.5px; }
  .mapping-table td { padding: 10px 8px; }
}