/* 1. CSS variables */
:root {
  --color-primary: #0b2545;
  --color-secondary: #1f6f8b;
  --color-accent: #f2b84b;
  --color-background: #ffffff;
  --color-surface: #f4f7f9;
  --color-text: #17212b;
  --color-muted: #5c6b78;
  --color-border: #d8e1e8;
  --font-heading: Arial, Helvetica, sans-serif;
  --font-body: Arial, Helvetica, sans-serif;
  --max-width: 1120px;
  --radius: 8px;
  --space: 1.25rem;
  --shadow: 0 16px 40px rgba(11, 37, 69, 0.08);
}

/* 2. Reset and base styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

/* 3. Typography */
h1,
h2,
h3 {
  margin: 0 0 0.75rem;
  color: var(--color-primary);
  font-family: var(--font-heading);
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

p {
  margin: 0 0 1rem;
}

.lead {
  max-width: 64ch;
  color: var(--color-muted);
  font-size: 1.125rem;
}

.eyebrow,
.date-label {
  margin-bottom: 0.75rem;
  color: var(--color-secondary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

/* 4. Layout utilities */
.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.narrow {
  max-width: 760px;
}

.section,
.page-hero,
.cta {
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.section-muted {
  background: var(--color-surface);
}

.split,
.hero-grid,
.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.card-grid,
.update-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

/* 5. Header and navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.96);
}

.nav-wrap {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
}

.brand span {
  max-width: 14rem;
  line-height: 1.2;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.primary-nav a {
  border-radius: var(--radius);
  color: var(--color-muted);
  padding: 0.55rem 0.75rem;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  background: #eaf4f8;
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-primary);
}

/* 6. Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: #12345f;
}

.button-secondary {
  background: #fff;
  color: var(--color-primary);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* 7. Hero sections */
.hero {
  padding: clamp(4rem, 9vw, 7rem) 0;
  background: linear-gradient(180deg, #f7fbfd 0%, #fff 100%);
}

.page-hero {
  background: #f7fbfd;
}

.hero-image,
.section-image {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.not-found {
  min-height: 58vh;
  display: grid;
  align-items: center;
}

/* 8. Content sections */
.notice,
.form-note,
.form-message {
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  background: #fff8e8;
  padding: 1rem;
}

.status-badge {
  display: inline-flex;
  margin-bottom: 1rem;
  border: 1px solid #bfd7e2;
  border-radius: 999px;
  background: #eaf4f8;
  color: var(--color-primary);
  padding: 0.35rem 0.7rem;
  font-size: 0.875rem;
  font-weight: 700;
}

details {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

summary {
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 700;
}

/* 9. Cards */
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.update-card img {
  width: 100%;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* 10. Forms */
.contact-form {
  display: grid;
  gap: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

label {
  color: var(--color-primary);
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem;
}

textarea {
  resize: vertical;
}

/* 11. Footer */
.site-footer {
  background: var(--color-primary);
  color: #dbe8ef;
  padding: 3rem 0 1.5rem;
}

.site-footer h2 {
  color: #fff;
  font-size: 1.15rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 2rem;
}

.site-footer nav {
  display: grid;
  gap: 0.35rem;
}

.site-footer a {
  color: #dbe8ef;
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
  text-decoration: underline;
}

.copyright {
  width: min(100% - 2rem, var(--max-width));
  margin: 2rem auto 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 1rem;
  color: #b9ccd8;
  font-size: 0.9rem;
}

/* 12. Responsive breakpoints */
@media (max-width: 860px) {
  .nav-toggle {
    display: inline-block;
  }

  .primary-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid var(--color-border);
    background: #fff;
    padding: 0.75rem 1rem 1rem;
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav a {
    padding: 0.85rem;
  }

  .split,
  .hero-grid,
  .two-column,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .update-grid {
    grid-template-columns: 1fr;
  }

  .brand span {
    max-width: 11rem;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 1.25rem, var(--max-width));
  }

  .button {
    width: 100%;
  }
}

/* 13. Accessibility and reduced motion */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}