/* ============================================================
   GLOBAL.CSS — Reset, typography, layout, header, footer
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

/* --- Custom Properties --- */
:root {
  --navy-900: #061529;
  --navy-700: #0B1F3A;
  --navy-500: #163A6B;
  --navy-300: #2E5F8A;
  --ice-500: #6FC4DA;
  --ice-300: #A8DCE9;
  --ice-100: #DFF2F8;
  --arctic: #F0F7FB;
  --white: #FEFEFE;
  --gold: #C8943A;
  --gold-light: #E8C06A;
  --text-primary: #0D1B2A;
  --text-secondary: #4A6680;
  --text-muted: #7A98B0;
  --tier-green: #2ECC71;
  --tier-yellow: #F1C40F;
  --tier-orange: #E67E22;
  --tier-red: #E74C3C;
  --max-width: 1100px;
  --radius: 6px;
  --radius-lg: 12px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--arctic);
  -webkit-font-smoothing: antialiased;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: 'DM Serif Display', Georgia, serif;
  line-height: 1.15;
  color: var(--navy-700);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }
h4 { font-size: 1.0625rem; }
p { margin-bottom: 1.25rem; }
p:last-child { margin-bottom: 0; }
a {
  color: var(--navy-500);
  text-decoration: underline;
  text-decoration-color: var(--ice-500);
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--ice-500); }
a:focus-visible { outline: 2px solid var(--ice-500); outline-offset: 3px; border-radius: 2px; }
strong { font-weight: 600; }
ul, ol { padding-left: 1.5rem; }

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

/* --- Site Header --- */
.site-header {
  background: var(--navy-700);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(111, 196, 218, 0.15);
}
.site-header .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.site-logo { flex-shrink: 0; text-decoration: none; display: block; }
.site-logo__img { height: 44px; width: auto; display: block; }

/* --- Navigation --- */
.site-nav { display: flex; align-items: center; gap: 0.125rem; }
.site-nav a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius);
  letter-spacing: 0.01em;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
  white-space: nowrap;
}
.site-nav a:hover { color: #fff; background: rgba(111, 196, 218, 0.12); }
.site-nav a.active { color: var(--ice-500); background: rgba(111, 196, 218, 0.1); }
.site-nav a:focus-visible { outline: 2px solid var(--ice-500); outline-offset: 2px; }

/* --- Hamburger --- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* --- Mobile Nav --- */
@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--navy-700);
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.5rem 1.25rem;
    border-bottom: 1px solid rgba(111, 196, 218, 0.15);
    gap: 0.125rem;
    box-shadow: 0 8px 24px rgba(6,21,41,0.4);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.625rem 0.75rem; font-size: 0.9375rem; }
}

/* --- Footer --- */
.site-footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.5);
  padding: 3.5rem 0 2rem;
  margin-top: 5rem;
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
.footer-brand__tagline {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-top: 0.875rem;
  max-width: 280px;
}
.footer-nav-group h4 {
  color: rgba(255,255,255,0.8);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.875rem;
}
.footer-nav-group a {
  display: block;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.225rem 0;
  transition: color 0.18s;
}
.footer-nav-group a:hover { color: var(--ice-300); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}
.footer-bottom a { color: rgba(255,255,255,0.3); text-decoration: none; transition: color 0.18s; }
.footer-bottom a:hover { color: var(--ice-300); }
@media (min-width: 768px) {
  .site-footer .container { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

/* --- Section Utilities --- */
.section { padding: 4.5rem 0; }
.section--dark { background: var(--navy-700); color: rgba(255,255,255,0.88); }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--alt { background: var(--white); }
.section__intro {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 68ch;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.section--dark .section__intro { color: rgba(255,255,255,0.7); }

/* --- Callout Box --- */
.callout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--ice-100);
  border-left: 3px solid var(--ice-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.125rem 1.375rem;
  margin: 2rem 0;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.callout--dark {
  background: rgba(111,196,218,0.08);
  border-left-color: var(--ice-500);
  color: rgba(255,255,255,0.85);
}
.callout__icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 0.1rem; }
.callout p { margin: 0; }
.callout p + p { margin-top: 0.5rem; }

/* --- Stars --- */
.stars { color: var(--gold); letter-spacing: 1px; }

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

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--ice-500);
  color: var(--navy-900);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: background 0.2s var(--ease), transform 0.15s var(--ease), color 0.2s;
  border: none;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}
.btn-primary:hover { background: var(--ice-300); color: var(--navy-900); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 2px solid var(--ice-500); outline-offset: 3px; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1.5px solid rgba(111,196,218,0.5);
  color: var(--ice-300);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  font-family: 'DM Sans', sans-serif;
}
.btn-outline:hover { background: rgba(111,196,218,0.12); border-color: var(--ice-300); color: #fff; }
.btn-outline:focus-visible { outline: 2px solid var(--ice-500); outline-offset: 3px; }

/* --- Form elements --- */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--navy-700);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid rgba(11,31,58,0.15);
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ice-500);
  box-shadow: 0 0 0 3px rgba(111,196,218,0.2);
}
.form-group textarea { min-height: 120px; resize: vertical; }

/* --- EEAT page layout --- */
.page-hero {
  background: var(--navy-700);
  color: #fff;
  padding: 3.5rem 0 3rem;
}
.page-hero h1 { color: #fff; margin-bottom: 0.75rem; }
.page-hero__lead {
  color: rgba(255,255,255,0.72);
  font-size: 1.0625rem;
  max-width: 60ch;
  line-height: 1.65;
}
.page-body { padding: 3.5rem 0; }
.page-body h2 { margin-top: 2rem; margin-bottom: 0.875rem; }
.page-body h2:first-child { margin-top: 0; }
.page-body ul, .page-body ol { margin-bottom: 1.25rem; }
.page-body li { margin-bottom: 0.375rem; line-height: 1.65; }

/* --- Criteria list (About page) --- */
.criteria-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 1rem; margin: 1.5rem 0 2rem; }
.criteria-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid rgba(11,31,58,0.08);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.375rem;
}
.criteria-item__weight {
  background: var(--navy-700);
  color: var(--ice-300);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.25rem 0.625rem;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 0.125rem;
  font-family: 'DM Sans', sans-serif;
}
.criteria-item__title { font-weight: 600; margin-bottom: 0.25rem; color: var(--navy-700); }
.criteria-item__desc { font-size: 0.9rem; color: var(--text-secondary); margin: 0; line-height: 1.6; }

/* --- FAQ (reused on standalone FAQ page) --- */
.faq-list { display: flex; flex-direction: column; gap: 0.625rem; margin-top: 2rem; }
details.faq-item {
  background: var(--white);
  border: 1px solid rgba(11,31,58,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
details.faq-item[open] {
  box-shadow: 0 4px 20px rgba(11,31,58,0.08);
  border-color: rgba(111,196,218,0.28);
}
details.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.125rem 1.375rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9875rem;
  color: var(--navy-700);
  list-style: none;
  gap: 1rem;
  user-select: none;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after {
  content: '+';
  font-size: 1.375rem;
  font-weight: 300;
  color: var(--ice-500);
  flex-shrink: 0;
  line-height: 1;
  transition: transform 0.25s var(--ease);
}
details.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 1rem 1.375rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid rgba(11,31,58,0.06);
}
.faq-answer p:last-child { margin-bottom: 0; }