:root {
  --navy: #003366;
  --gray: #4a4a4a;
  --white: #ffffff;
  --muted: #7a7f88;
  --light: #f5f7fa;
  --accent: #4a4a4a;
  --focus: #003366;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--gray);
  background: var(--white);
  line-height: 1.6;
}

a { color: var(--navy); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
.container { width: min(1100px, 92%); margin: 0 auto; }
.placeholder { color: var(--muted); }

/* Skip link */
.skip-link { position: absolute; left: -9999px; top: auto; }
.skip-link:focus {
  left: 1rem; top: 1rem; background: var(--navy); color: var(--white);
  padding: 0.5rem 0.75rem; border-radius: 4px; z-index: 1000;
}

/* Header */
.site-header { background: var(--navy); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.6rem 0; }
.logo { display: flex; align-items: center; gap: 0.6rem; color: var(--white); }
.logo-text { font-weight: 600; color: var(--white); white-space: nowrap; }

.site-nav ul { display: flex; align-items: center; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.site-nav a { color: var(--white); padding: 0.5rem 0.25rem; border-radius: 4px; }
.site-nav a[aria-current="page"] { background: rgba(255,255,255,0.12); }

.nav-toggle { display: none; background: transparent; border: 0; cursor: pointer; }
.nav-toggle-bar { display: block; width: 24px; height: 2px; background: var(--white); margin: 5px 0; }

/* Hero */
.hero { position: relative; color: var(--white); text-align: center; }
.hero-bg {
  min-height: 56vh;
  background:
    radial-gradient(ellipse at center, rgba(0,51,102,0.55) 0%, rgba(0,51,102,0.9) 70%),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.08) 0 2px, transparent 2px 6px),
    linear-gradient(180deg, rgba(0,0,0,0.15), rgba(0,0,0,0.35));
}
.hero-content { position: absolute; inset: 0; display: grid; place-items: center; padding: 2rem; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 3rem); margin: 0 0 0.5rem; }
.hero p { max-width: 720px; margin: 0 auto 1rem; }

/* Buttons */
.btn { display: inline-block; border: 2px solid var(--navy); padding: 0.6rem 1rem; border-radius: 6px; font-weight: 600; }
.btn-primary { background: var(--white); color: var(--navy); border-color: var(--white); }
.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-small { padding: 0.4rem 0.75rem; }

/* Layout */
.page-hero.small { background: var(--light); border-bottom: 1px solid #e5e8ef; }
.page-hero .container { padding: 2rem 0; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 2rem auto; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin: 2rem auto; }

.feature, .card { background: #fff; border: 1px solid #e5e8ef; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 1rem; }
.centered { text-align: center; }
.note { color: var(--muted); font-size: 0.9rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 2rem auto; }
.cards .card-body { padding: 0; }

/* Services */
.service-list { margin: 2rem auto; display: grid; gap: 1rem; }
.service { background: #fff; border: 1px solid #e5e8ef; border-radius: 8px; padding: 1rem; }

/* Info block */
.info-block { margin: 2rem auto; }

/* Form */
.form { padding: 1rem; }
.form-field { margin-bottom: 1rem; display: grid; gap: 0.4rem; }
input, textarea { padding: 0.7rem; border: 1px solid #d9dde6; border-radius: 6px; font: inherit; }
input:focus, textarea:focus { outline: 2px solid var(--focus); border-color: var(--focus); }
.error { color: #b00020; min-height: 1rem; }
.form-status { margin-top: 0.75rem; }

/* Footer */
.site-footer { background: #00264d; color: var(--white); margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1rem; padding: 2rem 0; }
.footer-list { list-style: none; padding: 0; margin: 0.25rem 0; }
.footer-list a { color: #e6eef8; }
.footer-legal { border-top: 1px solid rgba(255,255,255,0.12); padding: 0.8rem 0; text-align: center; color: #cfd6e6; }

/* Responsive nav and layout */
@media (max-width: 920px) {
  .site-nav { position: absolute; left: 0; right: 0; top: 64px; background: var(--navy); display: none; }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; align-items: flex-start; gap: 0; padding: 0.75rem 1rem; }
  .nav-toggle { display: inline-block; }
  .logo-text { font-size: 0.95rem; }

  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

/* Focus visibility */
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }