/* =====================================================================
   CutOffMark CBT — Design System
   Single, lightweight, mobile-first stylesheet. No framework, no build
   step. Loaded once and shared by the public site, dashboard, CBT
   interface and admin panel so everything feels like one product.
   ===================================================================== */

:root {
  /* Brand */
  --brand-50:  #eff6ff;
  --brand-100: #dbeafe;
  --brand-200: #bfdbfe;
  --brand-500: #2563eb;
  --brand-600: #1d4ed8;
  --brand-700: #1e40af;

  --accent-500: #0d9488; /* teal accent, used sparingly */
  --accent-600: #0f766e;

  --success-500: #16a34a;
  --success-100: #dcfce7;
  --warning-500: #d97706;
  --warning-100: #fef3c7;
  --danger-500:  #dc2626;
  --danger-100:  #fee2e2;

  /* Ink / neutrals */
  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-500: #64748b;
  --ink-300: #cbd5e1;
  --ink-200: #e2e8f0;
  --ink-100: #f1f5f9;
  --ink-50:  #f8fafc;
  --white: #ffffff;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --max-width: 1200px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------------------------------------------------------------------
   Reset
   --------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
input, select, textarea, button { font-family: inherit; font-size: 1rem; }

/* Visible focus states for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--brand-200);
  outline-offset: 2px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--brand-600);
  color: #fff; padding: 10px 16px; z-index: 1000; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------------
   Typography
   --------------------------------------------------------------------- */
h1, .h1 { font-size: clamp(1.75rem, 1.4rem + 1.6vw, 2.75rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; }
h2, .h2 { font-size: clamp(1.5rem, 1.3rem + 1vw, 2.1rem); font-weight: 800; line-height: 1.2; letter-spacing: -0.01em; }
h3, .h3 { font-size: 1.25rem; font-weight: 700; }
.text-muted { color: var(--ink-500); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.lead { font-size: 1.125rem; color: var(--ink-700); }

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-md); font-weight: 700;
  font-size: 0.95rem; border: 1px solid transparent; cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  min-height: 44px; line-height: 1.2;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--brand-600); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--brand-700); }
.btn--secondary { background: var(--white); color: var(--brand-700); border-color: var(--brand-200); }
.btn--secondary:hover { background: var(--brand-50); }
.btn--ghost { background: transparent; color: var(--ink-700); border-color: var(--ink-200); }
.btn--ghost:hover { background: var(--ink-50); }
.btn--danger { background: var(--danger-500); color: #fff; }
.btn--sm { padding: 8px 14px; font-size: 0.85rem; min-height: 36px; }
.btn--lg { padding: 15px 30px; font-size: 1.05rem; }
.btn--block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------------------------------------------------------------------
   Cards
   --------------------------------------------------------------------- */
.card {
  background: var(--white); border: 1px solid var(--ink-200); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow-sm);
}
.card--flat { box-shadow: none; }
.card-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .card-grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .card-grid--3 { grid-template-columns: repeat(3, 1fr); } .card-grid--4 { grid-template-columns: repeat(4, 1fr); } }

/* ---------------------------------------------------------------------
   Forms
   --------------------------------------------------------------------- */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--ink-700); }
.form-control {
  width: 100%; padding: 12px 14px; border: 1px solid var(--ink-300); border-radius: var(--radius-md);
  background: var(--white); color: var(--ink-900); min-height: 46px;
}
.form-control:focus { border-color: var(--brand-500); }
textarea.form-control { min-height: 110px; resize: vertical; }
.form-hint { font-size: 0.8rem; color: var(--ink-500); margin-top: 6px; }
.form-error { font-size: 0.8rem; color: var(--danger-500); margin-top: 6px; }
.form-row { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .form-row--2 { grid-template-columns: 1fr 1fr; } }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: 18px; height: 18px; }

/* ---------------------------------------------------------------------
   Alerts
   --------------------------------------------------------------------- */
.alert { padding: 14px 16px; border-radius: var(--radius-md); font-size: 0.92rem; margin-bottom: 16px; border: 1px solid transparent; }
.alert--success { background: var(--success-100); color: #15803d; border-color: #bbf7d0; }
.alert--error   { background: var(--danger-100); color: #b91c1c; border-color: #fecaca; }
.alert--warning { background: var(--warning-100); color: #92400e; border-color: #fde68a; }
.alert--info    { background: var(--brand-50); color: var(--brand-700); border-color: var(--brand-200); }

/* ---------------------------------------------------------------------
   Badges
   --------------------------------------------------------------------- */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; }
.badge--brand { background: var(--brand-50); color: var(--brand-700); }
.badge--success { background: var(--success-100); color: #15803d; }
.badge--warning { background: var(--warning-100); color: #92400e; }
.badge--danger { background: var(--danger-100); color: #b91c1c; }
.badge--neutral { background: var(--ink-100); color: var(--ink-700); }

/* ---------------------------------------------------------------------
   Header / Navbar
   --------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid var(--ink-200);
}
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.25rem; color: var(--ink-900); }
.brand span.dot { color: var(--brand-600); }
.nav-links { display: none; align-items: center; gap: 28px; }
.nav-links a { font-weight: 600; font-size: 0.95rem; color: var(--ink-700); }
.nav-links a:hover, .nav-links a.active { color: var(--brand-600); }
.nav-actions { display: none; align-items: center; gap: 12px; }
.nav-toggle {
  display: inline-flex; background: none; border: 1px solid var(--ink-200); border-radius: var(--radius-md);
  width: 44px; height: 44px; align-items: center; justify-content: center; cursor: pointer;
}
@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-actions { display: flex; }
  .nav-toggle { display: none; }
}

.mobile-drawer {
  position: fixed; inset: 0; background: rgba(15,23,42,.5); z-index: 200;
  display: none;
}
.mobile-drawer.is-open { display: block; }
.mobile-drawer__panel {
  position: absolute; top: 0; right: 0; width: min(320px, 86vw); height: 100%;
  background: var(--white); padding: 20px; overflow-y: auto; box-shadow: var(--shadow-lg);
}
.mobile-drawer__panel a.drawer-link { display: block; padding: 14px 4px; font-weight: 600; border-bottom: 1px solid var(--ink-100); }
.mobile-drawer__close { background: none; border: none; font-size: 1.5rem; cursor: pointer; float: right; }

/* ---------------------------------------------------------------------
   Hero
   --------------------------------------------------------------------- */
.hero { padding: 56px 0 40px; background: linear-gradient(180deg, var(--brand-50) 0%, #ffffff 65%); }
.hero-grid { display: grid; gap: 40px; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1.1fr 1fr; } }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 26px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--white); border: 1px solid var(--ink-200); padding: 8px 14px; border-radius: 999px; font-size: 0.82rem; font-weight: 600; color: var(--ink-700); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* CBT interface mock preview (pure CSS, no image asset needed) */
.cbt-preview { background: var(--white); border: 1px solid var(--ink-200); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.cbt-preview__bar { display: flex; align-items: center; justify-content: space-between; background: var(--ink-900); color: #fff; padding: 12px 16px; font-size: 0.8rem; }
.cbt-preview__timer { background: rgba(255,255,255,.12); padding: 4px 10px; border-radius: 999px; font-weight: 700; }
.cbt-preview__body { padding: 20px; }
.cbt-preview__q { font-weight: 700; margin-bottom: 14px; font-size: 0.95rem; }
.cbt-preview__opt { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1px solid var(--ink-200); border-radius: var(--radius-md); margin-bottom: 10px; font-size: 0.88rem; }
.cbt-preview__opt.is-selected { border-color: var(--brand-500); background: var(--brand-50); }
.cbt-preview__letter { width: 24px; height: 24px; border-radius: 50%; background: var(--ink-100); display: inline-flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; }
.cbt-preview__opt.is-selected .cbt-preview__letter { background: var(--brand-600); color: #fff; }
.cbt-preview__nav { display: grid; grid-template-columns: repeat(10, 1fr); gap: 6px; padding: 0 20px 20px; }
.cbt-preview__nav span { aspect-ratio: 1; border-radius: 6px; background: var(--ink-100); font-size: 0.65rem; display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--ink-500); }
.cbt-preview__nav span.answered { background: var(--success-500); color: #fff; }
.cbt-preview__nav span.current { background: var(--brand-600); color: #fff; }
.cbt-preview__nav span.flagged { background: var(--warning-500); color: #fff; }

/* ---------------------------------------------------------------------
   Sections
   --------------------------------------------------------------------- */
.section { padding: 56px 0; }
.section--tight { padding: 36px 0; }
.section--muted { background: var(--ink-50); }
.section-head { max-width: 640px; margin-bottom: 32px; }
.section-head .eyebrow { color: var(--brand-600); font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .06em; }

/* Category / feature cards */
.cat-card { display: flex; flex-direction: column; gap: 10px; padding: 22px; border-radius: var(--radius-lg); border: 1px solid var(--ink-200); background: var(--white); transition: box-shadow .15s ease, transform .15s ease; }
.cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cat-card__icon { width: 44px; height: 44px; border-radius: 12px; background: var(--brand-50); color: var(--brand-600); display: flex; align-items: center; justify-content: center; font-weight: 800; }
.feature-card { padding: 22px; border-radius: var(--radius-lg); border: 1px solid var(--ink-200); }
.feature-card__icon { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-500); color: #fff; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; font-weight: 800; }

.steps { display: grid; gap: 20px; grid-template-columns: 1fr; counter-reset: step; }
@media (min-width: 780px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { position: relative; padding: 22px 18px 18px; border: 1px solid var(--ink-200); border-radius: var(--radius-lg); }
.step__num { width: 32px; height: 32px; border-radius: 50%; background: var(--brand-600); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 12px; }

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.site-footer { background: var(--ink-900); color: var(--ink-200); padding: 40px 0 24px; margin-top: 40px; }
.footer-grid { display: grid; gap: 28px; grid-template-columns: 1fr; }
@media (min-width: 780px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.site-footer h4 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 14px; }
.site-footer a { color: var(--ink-300); font-size: 0.9rem; display: block; padding: 5px 0; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 28px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: 0.82rem; color: var(--ink-500); }

/* ---------------------------------------------------------------------
   Dashboard layout
   --------------------------------------------------------------------- */
.app-shell { display: flex; min-height: 100vh; background: var(--ink-50); }
.app-sidebar {
  display: none; width: 250px; flex-shrink: 0; background: var(--white); border-right: 1px solid var(--ink-200);
  padding: 20px 14px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
@media (min-width: 960px) { .app-sidebar { display: block; } }
.app-sidebar__link { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: var(--radius-md); font-weight: 600; color: var(--ink-700); font-size: 0.92rem; margin-bottom: 2px; }
.app-sidebar__link:hover { background: var(--ink-50); }
.app-sidebar__link.active { background: var(--brand-50); color: var(--brand-700); }
.app-main { flex: 1; min-width: 0; }
.app-topbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; background: var(--white); border-bottom: 1px solid var(--ink-200); position: sticky; top: 0; z-index: 50; }
.app-content { padding: 20px; max-width: 1100px; }
@media (min-width: 640px) { .app-content { padding: 28px; } }

.bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; background: #fff; border-top: 1px solid var(--ink-200); display: flex; z-index: 90; padding-bottom: env(safe-area-inset-bottom); }
@media (min-width: 960px) { .bottom-nav { display: none; } }
.bottom-nav a { flex: 1; text-align: center; padding: 10px 4px 8px; font-size: 0.68rem; font-weight: 700; color: var(--ink-500); }
.bottom-nav a.active { color: var(--brand-600); }
.bottom-nav__icon { font-size: 1.15rem; display: block; margin-bottom: 2px; }
.has-bottom-nav { padding-bottom: 74px; }
@media (min-width: 960px) { .has-bottom-nav { padding-bottom: 0; } }

/* Stat tiles */
.stat-tile { padding: 18px; border-radius: var(--radius-lg); border: 1px solid var(--ink-200); background: var(--white); }
.stat-tile__label { font-size: 0.78rem; color: var(--ink-500); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-tile__value { font-size: 1.9rem; font-weight: 800; margin-top: 6px; }
.stat-tile__meta { font-size: 0.8rem; color: var(--ink-500); margin-top: 4px; }

/* Progress bar */
.progress { height: 10px; border-radius: 999px; background: var(--ink-100); overflow: hidden; }
.progress__fill { height: 100%; background: var(--brand-600); border-radius: 999px; transition: width .3s ease; }
.progress__fill--success { background: var(--success-500); }
.progress__fill--warning { background: var(--warning-500); }

/* Subject performance bars */
.subject-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.subject-bar__label { width: 130px; flex-shrink: 0; font-size: 0.85rem; font-weight: 600; }
.subject-bar__track { flex: 1; }
.subject-bar__pct { width: 44px; text-align: right; font-size: 0.85rem; font-weight: 700; flex-shrink: 0; }

/* ---------------------------------------------------------------------
   Tables
   --------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--ink-200); border-radius: var(--radius-lg); }
table.data-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; font-size: 0.88rem; border-bottom: 1px solid var(--ink-100); }
.data-table th { background: var(--ink-50); font-weight: 700; color: var(--ink-700); }
.data-table tr:last-child td { border-bottom: none; }

/* Empty states */
.empty-state { text-align: center; padding: 48px 20px; color: var(--ink-500); }
.empty-state__icon { font-size: 2.4rem; margin-bottom: 10px; }

/* ---------------------------------------------------------------------
   CBT exam interface
   --------------------------------------------------------------------- */
.exam-shell { min-height: 100vh; background: var(--ink-50); display: flex; flex-direction: column; }
.exam-topbar { background: var(--ink-900); color: #fff; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; position: sticky; top: 0; z-index: 60; }
.exam-topbar__title { font-weight: 700; font-size: 0.95rem; }
.exam-topbar__meta { font-size: 0.78rem; color: var(--ink-300); }
.exam-timer { background: rgba(255,255,255,.12); padding: 8px 16px; border-radius: 999px; font-weight: 800; font-size: 1rem; font-variant-numeric: tabular-nums; }
.exam-timer.is-low { background: var(--danger-500); }

.exam-body { flex: 1; display: flex; flex-direction: column; }
@media (min-width: 980px) { .exam-body { flex-direction: row; } }

.exam-question-area { flex: 1; padding: 20px; max-width: 780px; margin: 0 auto; width: 100%; }
.exam-question-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.exam-question-text { font-size: 1.08rem; font-weight: 600; line-height: 1.6; margin-bottom: 22px; }
.exam-question-img { margin-bottom: 20px; border-radius: var(--radius-md); border: 1px solid var(--ink-200); }

.exam-option { display: flex; align-items: flex-start; gap: 14px; padding: 16px; border: 2px solid var(--ink-200); border-radius: var(--radius-md); margin-bottom: 12px; cursor: pointer; background: var(--white); transition: border-color .1s ease, background .1s ease; min-height: 56px; }
.exam-option:hover { border-color: var(--brand-300, var(--brand-200)); }
.exam-option.is-selected { border-color: var(--brand-500); background: var(--brand-50); }
.exam-option input[type="radio"] { width: 20px; height: 20px; margin-top: 2px; flex-shrink: 0; accent-color: var(--brand-600); }
.exam-option__letter { width: 30px; height: 30px; border-radius: 50%; background: var(--ink-100); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; flex-shrink: 0; }
.exam-option.is-selected .exam-option__letter { background: var(--brand-600); color: #fff; }
.exam-option__text { font-size: 1rem; padding-top: 3px; }

.exam-actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 24px; flex-wrap: wrap; }
.exam-actions__left, .exam-actions__right { display: flex; gap: 10px; flex-wrap: wrap; }

.exam-sidebar { width: 100%; background: var(--white); border-top: 1px solid var(--ink-200); padding: 16px; }
@media (min-width: 980px) { .exam-sidebar { width: 300px; border-top: none; border-left: 1px solid var(--ink-200); height: calc(100vh - 52px); position: sticky; top: 52px; overflow-y: auto; } }
.exam-nav-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; font-size: 0.72rem; }
.exam-nav-legend span { display: inline-flex; align-items: center; gap: 5px; }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.exam-question-nav { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
@media (min-width: 980px) { .exam-question-nav { grid-template-columns: repeat(5, 1fr); } }
.exam-nav-btn { aspect-ratio: 1; border-radius: 8px; border: 1px solid var(--ink-200); background: var(--ink-50); font-weight: 700; font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; justify-content: center; position: relative; }
.exam-nav-btn.answered { background: var(--success-500); color: #fff; border-color: var(--success-500); }
.exam-nav-btn.current { outline: 3px solid var(--brand-500); outline-offset: 1px; }
.exam-nav-btn.flagged::after { content: "\2691"; position: absolute; top: -6px; right: -4px; font-size: 0.7rem; color: var(--warning-500); }
.exam-subject-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.exam-subject-tab { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--ink-200); font-size: 0.8rem; font-weight: 700; background: var(--white); }
.exam-subject-tab.active { background: var(--brand-600); color: #fff; border-color: var(--brand-600); }

.exam-autosave-indicator { font-size: 0.72rem; color: var(--ink-500); display: flex; align-items: center; gap: 5px; }
.exam-autosave-indicator.saving { color: var(--brand-600); }
.exam-autosave-indicator.saved { color: var(--success-500); }

/* Result page */
.score-ring-wrap { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.score-ring { width: 160px; height: 160px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: conic-gradient(var(--brand-600) calc(var(--pct,0) * 1%), var(--ink-100) 0); }
.score-ring__inner { width: 128px; height: 128px; border-radius: 50%; background: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.score-ring__value { font-size: 1.8rem; font-weight: 800; }

/* Review list */
.review-item { border: 1px solid var(--ink-200); border-radius: var(--radius-lg); padding: 18px; margin-bottom: 14px; }
.review-item__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.review-option { padding: 10px 14px; border-radius: var(--radius-md); border: 1px solid var(--ink-200); margin-bottom: 8px; font-size: 0.92rem; }
.review-option.correct { border-color: var(--success-500); background: var(--success-100); }
.review-option.incorrect { border-color: var(--danger-500); background: var(--danger-100); }

/* Utilities */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.hidden { display: none !important; }

@media (max-width: 639px) {
  .hero { padding: 32px 0 24px; }
  .section { padding: 40px 0; }
}