:root {
  --color-primary: #1e3a5f;
  --color-primary-light: #2d5a8e;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-text: #1a202c;
  --color-text-secondary: #475569;
  --color-muted: #576878;
  --color-border: #e2e8f0;
  --color-border-muted: #cbd5e1;
  --color-under-review-bg: #f1f5f9;
  --font-heading: 'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 880px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Focus Styles ---- */

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.site-header :focus-visible {
  outline-color: #ffffff;
}

/* ---- Skip Navigation ---- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  z-index: 100;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
}

/* ---- Visually Hidden (screen reader only) ---- */

.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;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
}

/* ---- Layout ---- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header ---- */

.site-header {
  background: var(--color-primary);
  color: #ffffff;
  padding: 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-title:hover {
  opacity: 0.9;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.site-nav a:hover {
  color: #ffffff;
}

/* ---- Hero / Intro ---- */

.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

.hero .tagline {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

.hero .editorial-note {
  font-size: 0.95rem;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ---- Section Headings ---- */

.section-heading {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-border);
}

/* ---- Resource Cards ---- */

.resource-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.resource-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.resource-card:hover {
  box-shadow: 0 4px 24px rgba(30, 58, 95, 0.08);
  border-color: var(--color-border-muted);
}

.resource-card .language {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.resource-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.resource-card .blurb {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.resource-card .cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-right: 1.5rem;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.15s ease;
}

.resource-card .cta:hover {
  color: var(--color-accent-hover);
}

.resource-card .cta::after {
  content: '→';
  transition: transform 0.15s ease;
}

.resource-card .cta:hover::after {
  transform: translateX(3px);
}

/* ---- Under Review Section ---- */

.under-review {
  margin-bottom: 4rem;
}

.under-review .section-heading {
  color: var(--color-muted);
}

.under-review-note {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.under-review .resource-card {
  background: var(--color-under-review-bg);
  border-color: var(--color-border);
}

.under-review .resource-card:hover {
  box-shadow: 0 2px 16px rgba(30, 58, 95, 0.05);
}

.under-review .resource-card .language {
  color: var(--color-muted);
}

.under-review .resource-card h3 {
  color: var(--color-text-secondary);
  font-size: 1.3rem;
}

.under-review .resource-card .blurb {
  font-size: 0.95rem;
}

/* ---- FAQ Page ---- */

.page-intro {
  padding: 3rem 0 2rem;
}

.page-intro h1 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.page-intro p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  line-height: 1.65;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 4rem;
}

.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.faq-item summary {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background-color 0.15s ease;
}

.faq-item summary:hover {
  background-color: var(--color-under-review-bg);
}

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: 1rem;
}

.faq-answer p {
  margin-bottom: 1rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer strong {
  color: var(--color-text);
  font-weight: 600;
}

.faq-answer a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
}

.faq-answer a:hover {
  color: var(--color-accent-hover);
}

/* ---- Footer ---- */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 500;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
  .hero {
    padding: 3rem 0 2rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1.05rem;
  }

  .resource-card {
    padding: 1.5rem;
  }

  .resource-card h3 {
    font-size: 1.3rem;
  }

  .page-intro h1 {
    font-size: 1.75rem;
  }

  .faq-item summary {
    font-size: 1rem;
    padding: 1rem 1.25rem;
  }

  .faq-answer {
    padding: 0 1.25rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}