:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #eef3ff;
  --text: #111827;
  --muted: #5b6575;
  --line: #e5e7eb;
  --brand: #2563eb;
  --brand-2: #7c3aed;
  --ok: #15803d;
  --danger: #b91c1c;
  --shadow: 0 20px 60px rgba(15, 23, 42, .08);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #111827;
    --surface-2: #172033;
    --text: #f8fafc;
    --muted: #cbd5e1;
    --line: #263247;
    --brand: #60a5fa;
    --brand-2: #a78bfa;
    --shadow: 0 20px 60px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--brand) 16%, transparent), transparent 36rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: inherit; }
img { max-width: 100%; }
button, input, select, textarea { font: inherit; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -10rem;
  z-index: 20;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
}
.skip-link:focus { top: 1rem; }

.site-header,
.site-footer,
.section,
.hero {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  text-decoration: none;
  letter-spacing: -.02em;
}
.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: var(--shadow);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.main-nav a,
.site-footer nav a,
.quick-links a,
.text-link {
  color: var(--muted);
  text-decoration: none;
}
.main-nav a {
  padding: 9px 12px;
  border-radius: 999px;
}
.main-nav a:hover,
.main-nav a:focus-visible,
.quick-links a:hover,
.text-link:hover { color: var(--brand); }
.menu-toggle { display: none; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: 28px;
  align-items: center;
  padding: 48px 0 32px;
}
.home-hero { min-height: 560px; }
.compact-hero {
  grid-template-columns: 1fr;
  min-height: auto;
  padding-top: 34px;
}
.hero-content { max-width: 850px; }
.eyebrow {
  margin: 0 0 10px;
  color: var(--brand);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
}
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
h1 {
  font-size: clamp(2.25rem, 6vw, 4.85rem);
  margin: 0 0 18px;
}
h2 { font-size: clamp(1.65rem, 3vw, 2.5rem); margin: 0 0 14px; }
h3 { font-size: 1.22rem; margin: 0 0 10px; }
.lead {
  max-width: 780px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  margin: 0 0 24px;
}
.muted, .small-muted { color: var(--muted); }
.small-muted { font-size: .92rem; }

.search-bar {
  display: flex;
  gap: 10px;
  max-width: 720px;
  margin: 24px 0 0;
}
.search-bar input,
.filters select,
.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  padding: 14px 16px;
  outline: none;
}
.search-bar input:focus,
.filters select:focus,
.contact-form input:focus,
.contact-form textarea:focus,
.option:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 18%, transparent);
}
.search-bar input { flex: 1; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--brand);
  border-radius: 16px;
  background: var(--brand);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.button:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.button.ghost {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  color: var(--text);
  border-color: var(--line);
}
.button.small { min-height: 40px; padding: 9px 14px; border-radius: 14px; }
.hero-actions, .result-actions, .runner-actions, .quick-links {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.quick-links { margin-top: 18px; }
.quick-links a {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.day-test,
.info-panel,
.content-card,
.test-runner,
.card,
.category-card,
.collection,
.mini-card,
.notice {
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.day-test { padding: 24px; }
.day-test h2 { font-size: 1.55rem; }
.day-test p { color: var(--muted); }

.section { padding: 46px 0; }
.narrow { max-width: 820px; }
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 22px;
}
.cards,
.category-grid,
.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.collection-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card,
.category-card,
.collection,
.mini-card {
  position: relative;
  padding: 22px;
  overflow: hidden;
}
.card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.card a:not(.card-link), .card button { position: relative; z-index: 2; }
.card h3,
.card h2 { margin-top: 12px; }
.card p,
.category-card p,
.collection p,
.mini-card p { color: var(--muted); margin: 0 0 14px; }
.card:hover,
.category-card:hover,
.collection:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--brand) 55%, var(--line));
}
.card,
.category-card,
.collection { transition: transform .15s ease, border-color .15s ease; }
.category-card,
.collection { text-decoration: none; }
.card-top,
.meta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.meta-line {
  justify-content: flex-start;
  color: var(--muted);
  font-size: .92rem;
}
.meta-line span + span::before {
  content: '•';
  margin-right: 10px;
  color: var(--line);
}
.badge {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  padding: 5px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  color: var(--brand);
  font-size: .8rem;
  font-weight: 800;
}
.category-icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  margin-bottom: 14px;
}
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 18px;
  align-items: start;
}
.content-card,
.info-panel,
.test-runner { padding: 24px; }
.notice {
  padding: 16px;
  color: var(--text);
  background: color-mix(in srgb, var(--brand) 8%, var(--surface));
  box-shadow: none;
}
.notice.success { background: color-mix(in srgb, var(--ok) 12%, var(--surface)); }
.notice.danger { background: color-mix(in srgb, var(--danger) 12%, var(--surface)); }
.facts { margin: 0; display: grid; gap: 12px; }
.facts div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 750; text-align: right; }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: .94rem;
  margin-bottom: 18px;
}
.breadcrumbs a { text-decoration: none; color: var(--muted); }
.breadcrumbs a:hover { color: var(--brand); }

.runner-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}
.progress {
  height: 10px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin-bottom: 24px;
}
.progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  transition: width .2s ease;
}
.progress-text { color: var(--muted); font-weight: 750; }
.question-step {
  display: none;
  border: 0;
  margin: 0;
  padding: 0;
}
.question-step.active { display: block; }
.question-step legend {
  width: 100%;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 850;
  line-height: 1.25;
  margin-bottom: 18px;
}
.question-number {
  display: block;
  color: var(--brand);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.options { display: grid; gap: 12px; }
.option {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  cursor: pointer;
}
.option input { width: 18px; height: 18px; accent-color: var(--brand); }
.option:has(input:checked) {
  border-color: var(--brand);
  background: color-mix(in srgb, var(--brand) 10%, var(--surface));
}
.needs-answer legend { color: var(--danger); }
.runner-actions { margin-top: 22px; justify-content: space-between; }
.result-panel {
  text-align: center;
  padding: 20px 0 0;
}
.score-circle {
  width: 150px;
  height: 150px;
  display: grid;
  place-items: center;
  margin: 18px auto;
  border-radius: 50%;
  background: radial-gradient(circle at center, var(--surface) 56%, transparent 57%), conic-gradient(var(--brand), var(--brand-2));
}
.score-percent { font-size: 2rem; font-weight: 900; }
.result-description { max-width: 680px; margin: 0 auto 22px; color: var(--muted); }

.faq-list { display: grid; gap: 12px; }
details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 16px 18px;
}
summary { cursor: pointer; font-weight: 800; }
details p { color: var(--muted); margin-bottom: 0; }

.filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 28px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.filters label,
.contact-form label { display: grid; gap: 6px; font-weight: 750; color: var(--text); }
.article h1 { font-size: clamp(2.1rem, 5vw, 4rem); }
.article h2 { margin-top: 34px; }
.article p { color: var(--muted); }
.contact-form { display: grid; gap: 14px; margin-top: 22px; }
.hp-field { position: absolute; left: -9999px; opacity: 0; }
.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}
.footer-logo { color: var(--text); margin-bottom: 10px; }

.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;
}
:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 80%, white); outline-offset: 3px; }

@media (max-width: 980px) {
  .hero,
  .two-col { grid-template-columns: 1fr; }
  .cards,
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .collection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .site-header { align-items: flex-start; position: relative; }
  .menu-toggle {
    display: inline-flex;
    padding: 9px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text);
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    z-index: 10;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface);
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: grid; }
  .main-nav a { padding: 12px; }
  .search-bar,
  .runner-header,
  .section-heading,
  .site-footer { flex-direction: column; display: flex; align-items: stretch; }
  .cards,
  .cards.three,
  .category-grid,
  .collection-grid,
  .filters { grid-template-columns: 1fr; }
  .hero { padding-top: 24px; }
  .home-hero { min-height: auto; }
  .content-card,
  .info-panel,
  .test-runner,
  .card,
  .category-card,
  .collection,
  .mini-card { padding: 18px; }
  .runner-actions { justify-content: stretch; }
  .runner-actions .button { flex: 1; }
}


/* Multilingual and security update */
.language-picker {
  position: relative;
  z-index: 40;
  align-self: center;
  min-width: 172px;
}
.language-picker select {
  width: 100%;
  max-width: 230px;
  appearance: auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  padding: 9px 38px 9px 12px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .06);
}
.language-picker select:focus-visible {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 18%, transparent);
}
[dir="rtl"] .language-picker select {
  padding: 9px 12px 9px 38px;
}
.logo.compact {
  display: inline-flex;
}
.article-body h1 {
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.05;
}
.article-body section {
  margin-top: 34px;
}
.article-body p {
  font-size: 18px;
}
.email-card .button {
  word-break: break-all;
}
.audit-list li + li {
  margin-top: 8px;
}
@media (max-width: 720px) {
  .language-picker {
    width: 100%;
    align-self: stretch;
  }
  .language-picker select {
    max-width: none;
  }
}