/* ─── Design Tokens (Scholarly Design System) ─── */
:root {
  --primary: #0040a1;
  --primary-container: #0056d2;
  --primary-fixed: #dae2ff;
  --primary-fixed-dim: #b2c5ff;
  --on-primary: #ffffff;
  --on-primary-fixed: #001847;
  --on-primary-fixed-variant: #0040a1;
  --secondary: #1b6d24;
  --secondary-container: #a0f399;
  --secondary-fixed: #a3f69c;
  --secondary-fixed-dim: #88d982;
  --on-secondary: #ffffff;
  --on-secondary-container: #217128;
  --tertiary: #822800;
  --tertiary-container: #a93802;
  --tertiary-fixed: #ffdbcf;
  --tertiary-fixed-dim: #ffb59b;
  --on-tertiary: #ffffff;
  --on-tertiary-fixed-variant: #812800;
  --surface: #f8f9fa;
  --surface-dim: #d9dadb;
  --surface-bright: #f8f9fa;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f4f5;
  --surface-container: #edeeef;
  --surface-container-high: #e7e8e9;
  --surface-container-highest: #e1e3e4;
  --surface-variant: #e1e3e4;
  --on-surface: #191c1d;
  --on-surface-variant: #424654;
  --background: #f8f9fa;
  --on-background: #191c1d;
  --outline: #737785;
  --outline-variant: #c3c6d6;
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --inverse-surface: #2e3132;
  --inverse-on-surface: #f0f1f2;
  --test: #69419a;
  --radius: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --shadow-ambient: 0px 20px 40px rgba(25,28,29,0.04);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--background);
  color: var(--on-surface);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  font-size: 15px;
}
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  font-size: 1.25rem;
  vertical-align: middle;
  user-select: none;
}

/* material-symbols-outlined{font-variation-settings:'FILL' 0,'wght' 400,'GRAD' 0,'opsz' 24;font-size:1.25rem;vertical-align:middle;user-select:none} */

a { text-decoration: none; color: inherit; }

/* ─── Ghost Border ─── */
.ghost-border { outline: 1px solid rgba(195,198,214,0.15); }

/* ─── Nav ─── */
.nav {
  position: fixed; top: 0; width: 100%; z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-ambient);
}

.nav-badge{font-size:0.6rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;background:var(--on-secondary-container);color:white;padding:0.125rem 0.5rem;border-radius:9999px;margin-left:0.5rem;vertical-align:middle}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2.5rem;
  max-width: 1400px; margin: 0 auto;
}
.nav-brand {
  font-family: 'Manrope', sans-serif;
  font-weight: 900;
  font-size: 1.5rem;
  color: #1e3a8a;
  letter-spacing: -0.04em;
}
.nav-links {
  display: flex; gap: 2rem; align-items: center;
  font-family: 'Manrope', sans-serif; font-weight: 600;
  font-size: 0.875rem; letter-spacing: -0.01em;
}
.nav-links a {
  color: #475569;
  transition: color 0.2s;
  padding-bottom: 2px;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}
.nav-avatar {
  width: 2.25rem; height: 2.25rem; border-radius: 9999px;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 0.75rem;
}
.nav-right { display: flex; align-items: center; gap: 1rem; }
.nav-icon-btn {
  background: none; border: none; cursor: pointer;
  color: #475569; display: flex; align-items: center;
  transition: color 0.2s;
}
.nav-icon-btn:hover { color: var(--primary); }

/* ─── Sidebar ─── */
.sidebar {
  position: fixed; left: 0; top: 0;
  width: 17rem; height: 100vh;
  background: var(--surface-container-low);
  padding-top: 5.5rem;
  display: flex; flex-direction: column; gap: 0.25rem;
  padding-left: 1rem; padding-right: 1rem;
  overflow-y: auto;
  z-index: 50;
}
.sidebar-heading {
  padding: 0.75rem 0.75rem 1.5rem;
}
.sidebar-heading h2 {
  font-family: 'Manrope', sans-serif;
  font-weight: 800; font-size: 1.1rem;
  color: var(--primary);
}
.sidebar-heading p {
  font-size: 0.7rem; color: var(--on-surface-variant);
  margin-top: 0.125rem;
}
.sidebar-link {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-lg);
  font-size: 0.8125rem; font-weight: 500;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: all 0.2s;
}
.sidebar-link:hover {
  background: var(--surface-container-high);
  transform: translateX(2px);
}
.sidebar-link.active {
  background: var(--surface-container-lowest);
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0,64,161,0.08);
  /* outline: 2px solid var(--primary-fixed); */
}
.sidebar-link .material-symbols-outlined { font-size: 1.1rem; }
.sidebar-readiness {
  margin-top: auto; margin-bottom: 2rem;
  background: var(--primary-fixed);
  border-radius: var(--radius-xl);
  padding: 1rem;
  display: flex; flex-direction: column; gap: 0.75rem;
}
.sidebar-readiness-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.7rem; font-weight: 700;
  color: var(--on-primary-fixed);
  letter-spacing: 0.05em; text-transform: uppercase;
}
.progress-track {
  background: rgba(255,255,255,0.5);
  height: 6px; border-radius: 9999px; overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: 9999px;
  background: var(--primary);
  transition: width 0.6s ease;
}
.sidebar-mock-btn {
  width: 100%; padding: 0.5rem;
  background: var(--primary);
  color: white; border: none; border-radius: var(--radius-lg);
  font-size: 0.75rem; font-weight: 700; cursor: pointer;
  font-family: 'Manrope', sans-serif;
  transition: opacity 0.2s;
}
.sidebar-mock-btn:hover { opacity: 0.9; }

/* ─── Main Content ─── */
.main {
  margin-left: 17rem;
  padding-top: 5.5rem;
  min-height: 100vh;
  display: flex; flex-direction: column;
}
.page { display: none; flex-direction: column; align-items: center; padding: 3rem 2rem 4rem; }
.page.active { display: flex; }

/* ─── Home / Dashboard ─── */
.home-header {
  width: 100%; max-width: 52rem;
  margin-bottom: 2.5rem;
}
.home-header .tag {
  display: inline-block;
  font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--on-surface-variant); margin-bottom: 0.5rem;
}
.home-header h1 {
  font-family: 'Manrope', sans-serif;
  font-weight: 900; font-size: 2.25rem;
  letter-spacing: -0.04em;
  color: var(--on-surface);
  line-height: 1.1;
}
.home-header p {
  margin-top: 0.75rem;
  color: var(--on-surface-variant);
  font-size: 0.9375rem; max-width: 36rem;
}

.stats-grid {
  width: 100%; max-width: 52rem;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 1.25rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  box-shadow: var(--shadow-ambient);
}
.stat-card-icon {
  width: 2.25rem; height: 2.25rem; border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 0.25rem;
}
.stat-card-icon.blue { background: var(--primary-fixed); color: var(--primary); }
.stat-card-icon.green { background: var(--secondary-container); color: var(--secondary); }
.stat-card-icon.orange { background: var(--tertiary-fixed); color: var(--tertiary); }
.stat-card-value {
  font-family: 'Manrope', sans-serif;
  font-weight: 800; font-size: 1.75rem;
  color: var(--on-surface); letter-spacing: -0.03em;
}
.stat-card-label { font-size: 0.75rem; color: var(--on-surface-variant); }

.chapters-grid {
  width: 100%; max-width: 52rem;
  display: grid; grid-template-columns: 1fr; gap: 1rem;
}
.section-title {
  font-family: 'Manrope', sans-serif;
  font-weight: 800; font-size: 1rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.chapter-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; gap: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow-ambient);
  transition: transform 0.2s, box-shadow 0.2s;
}
.chapter-card:hover { transform: translateY(-1px); box-shadow: 0px 24px 48px rgba(25,28,29,0.07); }
.chapter-num {
  font-family: 'Manrope', sans-serif;
  font-weight: 900; font-size: 1.5rem;
  color: var(--primary-fixed-dim);
  width: 2.5rem; flex-shrink: 0; text-align: center;
  letter-spacing: -0.04em;
}
.chapter-info { flex: 1; }
.chapter-info h3 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700; font-size: 0.9375rem;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}
.chapter-info p { font-size: 0.75rem; color: var(--on-surface-variant); margin-top: 0.125rem; }
.chapter-meta {
  display: flex; align-items: center; gap: 0.5rem;
}
.chapter-badge {
  font-size: 0.65rem; font-weight: 600;
  padding: 0.25rem 0.5rem; border-radius: 9999px;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed-variant);
  font-family: 'Manrope', sans-serif;
}
.chapter-progress-circle {
  position: relative; width: 2.5rem; height: 2.5rem;
}
.chapter-progress-circle svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.chapter-progress-circle .track { stroke: var(--secondary-fixed-dim); fill: none; }
.chapter-progress-circle .fill { stroke: var(--secondary); fill: none; transition: stroke-dashoffset 0.6s ease; }
.chapter-progress-circle .label {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.55rem; font-weight: 700; color: var(--secondary);
}
.chapter-btn {
  background: none; border: none; cursor: pointer;
  color: var(--on-surface-variant);
  display: flex; align-items: center;
  transition: color 0.2s;
}
.chapter-btn:hover { color: var(--primary); }

/* ─── Chapter View ─── */
.chapter-view { width: 100%; max-width: 52rem; }
.chapter-view-header {
  display: flex; flex-direction: column; gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.chapter-view-header .tag {
  font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--on-surface-variant);
}
.chapter-view-header h1 {
  font-family: 'Manrope', sans-serif;
  font-weight: 900; font-size: 2rem;
  letter-spacing: -0.04em; line-height: 1.1;
}
.chapter-view-header p { color: var(--on-surface-variant); font-size: 0.875rem; }
.chapter-nav-bar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 2rem;
}
.progress-bar-wrap {
  flex: 1; height: 6px; border-radius: 9999px;
  background: var(--surface-container-high);
  overflow: hidden; margin: 0 1rem;
}
.progress-bar-fill {
  height: 100%; border-radius: 9999px;
  background: var(--secondary);
  transition: width 0.5s ease;
}
.btn-secondary {
  display: flex; align-items: center; gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  border: none; border-radius: var(--radius-lg);
  font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 0.8125rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-secondary:hover { background: var(--surface-container-highest); }

.section-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-ambient);
}
.section-card h2 {
  font-family: 'Manrope', sans-serif;
  font-weight: 800; font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.section-card h2 .sec-num {
  font-size: 0.7rem; font-weight: 600;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed-variant);
  padding: 0.125rem 0.375rem;
  border-radius: 9999px;
}
.section-card p {
  color: var(--on-surface);
  font-size: 0.9rem; line-height: 1.7;
  margin-bottom: 0.75rem;
}
.section-card p:last-child { margin-bottom: 0; }
.key-points {
  margin-top: 1rem;
  background: var(--surface-container-low);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
}
.key-points h3 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700; font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--secondary); margin-bottom: 0.625rem;
}
.key-points ul { list-style: none; display: flex; flex-direction: column; gap: 0.375rem; }
.key-points li {
  font-size: 0.875rem; color: var(--on-surface);
  padding-left: 1rem; position: relative;
}
.key-points li::before {
  content: ''; position: absolute; left: 0; top: 0.6em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--secondary);
}
.exam-alert {
  margin-top: 1rem;
  background: var(--tertiary-fixed);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex; align-items: flex-start; gap: 0.75rem;
}
.exam-alert .icon {
  width: 2rem; height: 2rem; border-radius: var(--radius-lg);
  background: var(--tertiary-fixed-dim);
  color: var(--tertiary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.exam-alert h3 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700; font-size: 0.75rem;
  color: var(--tertiary);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}
.exam-alert p { font-size: 0.8rem; color: var(--on-tertiary-fixed-variant); line-height: 1.5; }

/* ─── exam Page ─── */
div#page-quiz.page.Active {
    display: flex;
}





/* ─── Quiz Page ─── */

.quiz-container { width: 100%; max-width: 44rem; display: flex; flex-wrap: wrap;}
.quiz-top {
  display: bloc; justify-content: space-between; align-items: flex-end;
  margin-bottom: 2rem;
}
.quiz-top-left .tag { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-surface-variant); }
.quiz-top-left h1 {
  font-family: 'Manrope', sans-serif;
  font-weight: 900; font-size: 1.75rem;
  letter-spacing: -0.04em;
}
.quiz-timer {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--surface-container-low);
  padding: 0.5rem 1rem; border-radius: var(--radius-xl);
  font-family: 'Manrope', sans-serif; font-weight: 700;
  font-size: 1.125rem; color: var(--on-surface);
  font-variant-numeric: tabular-nums;
}
.quiz-timer .material-symbols-outlined { color: var(--tertiary); }
.quiz-progress-bar {
  width: 100%; height: 5px; border-radius: 9999px;
  background: var(--surface-container-high); overflow: hidden;
  margin-bottom: 2rem;
}
.quiz-progress-fill {
  height: 100%; border-radius: 9999px;
  background: var(--secondary);
  transition: width 0.5s ease;
}
.quiz-meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.5rem;
}
.quiz-badge {
  background: var(--primary-fixed);
  color: var(--on-primary-fixed-variant);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-lg);
  font-size: 0.75rem; font-weight: 600;
  font-family: 'Manrope', sans-serif;
}
.quiz-dots { display: flex; align-items: center; gap: 0.375rem; }
.quiz-dot {
  width: 1.25rem; height: 1.25rem; border-radius: 9999px;
  border: 2px solid white;
  display: flex; align-items: center; justify-content: center;
}
.quiz-dot.done { background: var(--secondary); }
.quiz-dot.current { background: var(--primary-fixed-dim); }
.quiz-dot.empty { background: var(--surface-container-highest); }
.quiz-dot .material-symbols-outlined { font-size: 0.6rem; color: white; }
.quiz-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-ambient);
  margin-bottom: 1.25rem;
}
.quiz-question {
  font-size: 1.0625rem; line-height: 1.65;
  color: var(--on-surface);
  margin-bottom: 1.75rem;
}
.quiz-options { display: flex; flex-direction: column; gap: 0.75rem; }
.quiz-option {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  background: var(--surface-container-low);
  cursor: pointer;
  transition: background 0.15s, border 0.15s;
  border: 2px solid transparent;
  position: relative;
}
.quiz-option:hover:not(.selected):not(.correct):not(.wrong) {
  background: var(--primary-fixed);
}
.quiz-option.selected {
  border-color: var(--primary);
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 3px rgba(0,64,161,0.1);
}
.quiz-option.correct {
  border-color: var(--secondary);
  background: rgba(160,243,153,0.2);
}
.quiz-option.wrong {
  border-color: var(--error);
  background: rgba(186,26,26,0.06);
}
.quiz-option input[type="radio"] { margin-top: 2px; accent-color: var(--primary); flex-shrink: 0; }
.quiz-option-text { font-size: 0.9rem; line-height: 1.55; }
.quiz-option-icon {
  position: absolute; right: 1rem; top: 50%; transform: translateY(-50%);
}
.quiz-option-icon .material-symbols-outlined { font-size: 1.1rem; }
.quiz-option.correct .quiz-option-icon .material-symbols-outlined { color: var(--secondary); }
.quiz-option.wrong .quiz-option-icon .material-symbols-outlined { color: var(--error); }
.quiz-explanation {
  margin-top: 1rem;
  background: var(--surface-container-low);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 0.875rem 1rem;
  font-size: 0.875rem; color: var(--on-surface);
  line-height: 1.55;
  display: none;
}
.quiz-explanation.show { display: block; }
.quiz-explanation strong { color: var(--primary); }
.quiz-actions {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem;
}
.btn-flag {
  display: flex; align-items: center; gap: 0.375rem;
  padding: 0.75rem 1.25rem;
  background: none; border: none; cursor: pointer;
  color: var(--on-surface-variant);
  font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 0.8125rem;
  border-radius: var(--radius-lg);
  transition: background 0.2s;
}
.btn-flag:hover { background: var(--surface-container-high); }
.btn-validate {
  padding: 0.75rem 1.5rem;
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  border: none; border-radius: var(--radius-xl);
  font-family: 'Manrope', sans-serif; font-weight: 800; font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-validate:hover { background: var(--surface-container-highest); }
.btn-validate:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-next {
  display: flex; align-items: center; gap: 0.375rem;
  padding: 0.75rem 1.75rem;
  background: var(--primary);
  color: white;
  border: none; border-radius: var(--radius-xl);
  font-family: 'Manrope', sans-serif; font-weight: 800; font-size: 0.875rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,64,161,0.25);
  transition: opacity 0.2s;
}
.btn-next:hover { opacity: 0.9; }
.quiz-info-row {
  display: grid; grid-template-columns: 1fr 2fr; gap: 1rem;
}
.quiz-alert {
  background: rgba(255,219,207,0.4);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  display: flex; align-items: flex-start; gap: 0.875rem;
}
.quiz-alert .icon-wrap {
  background: var(--tertiary-fixed-dim);
  color: var(--tertiary);
  width: 2.25rem; height: 2.25rem; border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.quiz-alert h3 {
  font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 0.75rem;
  color: var(--tertiary); text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}
.quiz-alert p { font-size: 0.75rem; color: var(--on-tertiary-fixed-variant); line-height: 1.5; }
.quiz-session {
  background: rgba(160,243,153,0.15);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.quiz-session-progress { display: flex; align-items: center; gap: 1rem; }
.circular-progress {
  position: relative; width: 3rem; height: 3rem;
}
.circular-progress svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.circular-progress circle { fill: none; }
.circular-progress .track { stroke: var(--secondary-fixed-dim); }
.circular-progress .fill { stroke: var(--secondary); transition: stroke-dashoffset 0.6s; }
.circular-progress .lbl {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.55rem; font-weight: 700; color: var(--secondary);
}
.quiz-session-info h3 {
  font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 0.8125rem;
  color: var(--on-secondary-container);
}
.quiz-session-info p { font-size: 0.7rem; color: rgba(33,113,40,0.7); }
.btn-link {
  background: none; border: none; cursor: pointer;
  font-family: 'Manrope', sans-serif; font-weight: 700;
  font-size: 0.7rem; color: var(--secondary);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.btn-link:hover { text-decoration: underline; }

/* ─── Quiz Result Screen ─── */
.quiz-result {
  display: none; flex-direction: column; align-items: center;
  text-align: center; padding: 3rem 2rem;
  width: 100%; max-width: 36rem;
}
.quiz-result.show { display: flex; }
.result-score-ring {
  width: 9rem; height: 9rem;
  position: relative; margin-bottom: 1.5rem;
}
.result-score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.result-score-ring circle { fill: none; stroke-linecap: round; }
.result-score-ring .track { stroke: var(--surface-container-high); stroke-width: 10; }
.result-score-ring .fill { stroke: var(--secondary); stroke-width: 10; transition: stroke-dashoffset 1s ease; }
.result-score-lbl {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.result-score-lbl .pct {
  font-family: 'Manrope', sans-serif; font-weight: 900; font-size: 2.25rem;
  color: var(--on-surface); letter-spacing: -0.04em;
}
.result-score-lbl .sub { font-size: 0.7rem; color: var(--on-surface-variant); }
.result-title {
  font-family: 'Manrope', sans-serif; font-weight: 900; font-size: 1.5rem;
  letter-spacing: -0.03em; margin-bottom: 0.5rem;
}
.result-sub { color: var(--on-surface-variant); font-size: 0.9rem; margin-bottom: 2rem; }
.result-stats {
  display: flex; gap: 1.5rem; margin-bottom: 2rem;
}
.result-stat {
  display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
}
.result-stat .val {
  font-family: 'Manrope', sans-serif; font-weight: 800; font-size: 1.5rem;
  letter-spacing: -0.03em;
}
.result-stat.green .val { color: var(--secondary); }
.result-stat.red .val { color: var(--error); }
.result-stat .lbl { font-size: 0.7rem; color: var(--on-surface-variant); }
.result-actions { display: flex; gap: 1rem; }

/* ─── Glossary ─── */
.glossary-container { width: 100%; max-width: 52rem; }
.glossary-search {
  position: relative; margin-bottom: 2rem;
}
.glossary-search input {
  width: 100%; padding: 0.875rem 1rem 0.875rem 2.75rem;
  background: var(--surface-container-lowest);
  border: none; border-bottom: 2px solid var(--outline-variant);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-family: 'Inter', sans-serif; font-size: 0.9375rem;
  color: var(--on-surface);
  outline: none;
  transition: border-color 0.2s;
  box-shadow: var(--shadow-ambient);
}
.glossary-search input:focus { border-bottom-color: var(--primary); }
.glossary-search .search-icon {
  position: absolute; left: 0.875rem; top: 50%; transform: translateY(-50%);
  color: var(--on-surface-variant);
}
.glossary-letter { margin-bottom: 1.5rem; }
.glossary-letter-head {
  font-family: 'Manrope', sans-serif;
  font-weight: 900; font-size: 1.5rem;
  color: var(--primary-fixed-dim);
  letter-spacing: -0.04em;
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--surface-container-high);
}
.glossary-term {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin-bottom: 0.5rem;
  box-shadow: var(--shadow-ambient);
  cursor: pointer;
  transition: transform 0.15s;
}
.glossary-term:hover { transform: translateX(3px); }
.glossary-term h3 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700; font-size: 0.9rem;
  color: var(--primary); margin-bottom: 0.25rem;
}
.glossary-term p { font-size: 0.8125rem; color: var(--on-surface-variant); line-height: 1.5; }
.glossary-term.hidden { display: none; }

/* ─── Footer ─── */
.footer {
  margin-left: 17rem;
  border-top: 1px solid var(--surface-container-high);
  background: var(--surface-container-lowest);
  padding: 2rem 2.5rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
.footer-brand {
  font-family: 'Manrope', sans-serif;
  font-weight: 800; font-size: 0.8rem;
  color: var(--outline); text-transform: uppercase; letter-spacing: 0.08em;
}
.footer-links { display: flex; gap: 2rem; }
.footer-links a {
  font-size: 0.75rem; color: var(--outline);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--on-surface); }
.footer-copy { font-size: 0.7rem; color: var(--outline); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .footer { margin-left: 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .quiz-info-row { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}

/* ─── Animations ─── */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.page.active > * { animation: fadeSlideUp 0.4s ease both; }
.page.active > *:nth-child(2) { animation-delay: 0.06s; }
.page.active > *:nth-child(3) { animation-delay: 0.12s; }
.page.active > *:nth-child(4) { animation-delay: 0.18s; }

/* ─── Utilities ─── */
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.text-sm { font-size: 0.875rem; }
.font-bold { font-weight: 700; }
.mt-6 { margin-top: 1.5rem; }
.w-full { width: 100%; }
.text-muted { color: var(--on-surface-variant); }