:root {
  --cobalt:#00368a;
  --text:#0b1220;
  --text-invert:#ffffff;
  --bg:#ffffff;
  --maxw:1200px;
}

/* Accessibility helper: keep text for screen readers 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;
}

* { box-sizing: border-box; border-radius: 0 !important; }
html, body { margin: 0; padding: 0; }
body { font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif; color: var(--text); background: var(--bg); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--cobalt); color: var(--text-invert); }
.header-inner { max-width: var(--maxw); margin-inline: auto; display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand__logoimg { height: 100px; width: auto; display: block; } /* <- controls header logo size */
.brand__name { font-weight: 700; font-size: 1.05rem; letter-spacing: .2px; color: var(--text-invert); }

/* Desktop nav */
.nav { display: none; }
.nav a { color: var(--text-invert); text-decoration: none; padding: 8px 10px; font-size: .95rem; }
.nav a:hover, .nav a:focus { background: rgba(255,255,255,.12); outline: none; }

/* Hamburger (mobile) */
.hamburger { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; background: transparent; color: var(--text-invert); border: 1px solid rgba(255,255,255,.35); cursor: pointer; }
.hamburger svg { width: 20px; height: 20px; }

/* Mobile menu panel */
.mobile-panel { position: fixed; top: 58px; right: 10px; width: min(92vw, 320px); background: var(--cobalt); color: var(--text-invert); box-shadow: 0 12px 30px rgba(0,0,0,.25); padding: 8px; transform: translateY(-10px); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.mobile-panel a { display: block; padding: 10px 12px; text-decoration: none; color: var(--text-invert); font-size: 1rem; }
.mobile-panel a:hover, .mobile-panel a:focus { background: rgba(255,255,255,.12); }
.mobile-panel[data-open="true"] { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* Page shell */
main { max-width: var(--maxw); margin: 40px auto; padding: 0 16px; }
footer { border-top: 1px solid #e6e8ee; margin-top: 48px; }
.footer-inner { max-width: var(--maxw); margin-inline: auto; padding: 18px 16px; font-size: .9rem; color: #5a6477; }

/* Responsive */
@media (min-width: 900px) {
  .nav { display: flex; gap: 4px; }
  .hamburger { display: none; }
  .mobile-panel { display: none; }
}