/* ============================================================
   shared.css — Common variables, header/nav, footer, buttons,
   cards and section layouts. Loaded by every page before its
   own stylesheet.
   ============================================================ */

:root {
  --navy: #0e1b31;
  --navy-mid: #16263f;
  --card: #1c2a40;
  --steel: #3d5675;
  --gold: #d4b06a;
  --gold-light: #e6c987;
  --gold-dark: #b8934a;
  --sky: #dbe5ef;
  --cream: #f4efe4;
  --text: #1f2a3a;
  --muted: #b9c3d1;

  --font-heading: "Libre Baskerville", Georgia, "Times New Roman", serif;
  --font-label: "Roboto Condensed", "Arial Narrow", Arial, sans-serif;
  --font-body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--text);
  background: var(--sky);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Buttons ───────────────────────────────────────────────── */

.btn {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.6rem 1.25rem;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn-gold {
  background: linear-gradient(180deg, var(--gold-light), var(--gold));
  border-color: var(--gold-dark);
  color: var(--navy);
}

.btn-gold:hover {
  background: var(--gold-light);
}

.btn-outline {
  border-color: var(--gold);
  color: var(--gold);
  background: transparent;
}

.btn-outline:hover {
  background: var(--gold);
  color: var(--navy);
}

/* ── Header & navigation ───────────────────────────────────── */

.site-header {
  background: var(--navy);
  color: var(--cream);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--cream);
}

.brand img {
  height: 76px;
  width: auto;
}

.brand span {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.nav-bar {
  background: linear-gradient(180deg, var(--steel), var(--navy-mid));
  border-top: 1px solid var(--gold-dark);
  border-bottom: 1px solid var(--gold-dark);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem 1.6rem;
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.nav a:not(.btn) {
  color: var(--cream);
  text-decoration: none;
  position: relative;
  padding: 0.25rem 0;
}

.nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.2s ease;
}

.nav a:not(.btn):hover::after,
.nav a.active::after {
  width: 100%;
}

.nav a.active {
  color: var(--gold-light);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-label);
  font-size: 1rem;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
}

/* ── Page header (inner pages) ─────────────────────────────── */

.page-header {
  background: var(--navy);
  color: var(--cream);
  padding: 1.75rem 0 1.5rem;
  border-bottom: 3px solid var(--gold-dark);
}

.page-header h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-bottom: 0.35rem;
}

.page-header p {
  max-width: 820px;
  font-size: 1.15rem;
  color: var(--muted);
}

/* ── Sections ──────────────────────────────────────────────── */

.section {
  padding: 3.5rem 0;
}

.section-dark {
  background: var(--navy-mid);
  color: var(--cream);
}

.section-title {
  text-align: center;
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  margin-bottom: 2rem;
}

.section-dark .section-title {
  color: var(--cream);
}

/* ── Cards ─────────────────────────────────────────────────── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  color: var(--cream);
  border: 1px solid var(--gold-dark);
  border-radius: 6px;
  padding: 1.6rem 1.5rem;
  box-shadow: 0 6px 18px rgba(14, 27, 49, 0.25);
}

.card h3 {
  font-family: var(--font-label);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 0.5rem;
}

.card p {
  color: #dfe4ec;
}

.card ul {
  margin: 0.75rem 0 0 1.1rem;
  color: #dfe4ec;
}

.card a:not(.btn) {
  color: var(--gold-light);
}

.card .btn {
  margin-top: 1rem;
}

/* ── Certification badge ───────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #fff;
  color: var(--navy);
  border: 2px solid var(--gold);
  border-radius: 999px;
  padding: 0.35rem 1rem 0.35rem 0.4rem;
  font-family: var(--font-label);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.badge img {
  width: auto;
  height: 52px;
}

/* ── Call to action band ───────────────────────────────────── */

.cta-band {
  background: var(--navy);
  color: var(--cream);
  text-align: center;
  padding: 3rem 0;
  border-top: 3px solid var(--gold-dark);
}

.cta-band h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.6rem;
}

.cta-band p {
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.cta-band .btn + .btn {
  margin-left: 0.75rem;
}

.resource-list {
  list-style: none;
  margin-left: 0;
}

.resource-list li + li {
  margin-top: 0.5rem;
}

/* ── Message pages (thank you, 404) ────────────────────────── */

.message-page {
  text-align: center;
  padding: 5rem 0;
}

.message-page img {
  height: 220px;
  margin: 0 auto 1.5rem;
}

.message-page h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--navy);
  margin-bottom: 0.75rem;
}

.message-page p {
  margin-bottom: 2rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ── Footer ────────────────────────────────────────────────── */

.site-footer {
  background: var(--navy);
  color: var(--muted);
  border-top: 1px solid var(--gold-dark);
  padding: 2.5rem 0 1.5rem;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer h4 {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold);
  margin-bottom: 0.6rem;
}

.site-footer ul {
  list-style: none;
}

.site-footer li + li {
  margin-top: 0.3rem;
}

.site-footer a {
  color: var(--cream);
  text-decoration: none;
}

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

.footer-brand .brand img {
  height: 54px;
}

.footer-brand p {
  margin: 0.75rem 0 1rem;
}

.footer-bottom {
  border-top: 1px solid rgba(212, 176, 106, 0.3);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
}

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 860px) {
  .header-top .btn {
    display: none;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding-top: 0.75rem;
    padding-bottom: 1rem;
  }

  .nav.open {
    display: flex;
  }

  .nav .btn {
    margin-top: 0.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .brand img {
    height: 50px;
  }

  .cta-band .btn {
    display: block;
    margin: 0.5rem auto 0;
    max-width: 280px;
  }

  .cta-band .btn + .btn {
    margin-left: auto;
  }
}