:root {
  --nav-surface: rgba(15, 34, 60, 0.95);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(12, 18, 34, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header .nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 16px 0;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-branding .custom-logo-link img {
  height: auto;
  width: 180px;
  max-width: 240px;
}

.site-branding .site-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--light);
}

.primary-navigation {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.primary-menu {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-menu > li {
  position: relative;
}

.primary-menu a {
  color: var(--light);
  padding: 10px 14px;
  display: block;
  border-radius: 10px;
  font-weight: 600;
}

.primary-menu a:hover,
.primary-menu a:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.primary-menu .sub-menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 12px 0;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: var(--nav-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.28);
}

.primary-menu .sub-menu li a {
  padding: 10px 18px;
  border-radius: 0;
  font-weight: 500;
  color: var(--light);
}

.primary-menu > li:hover > .sub-menu,
.primary-menu > li:focus-within > .sub-menu {
  display: block;
}

/* Footer */
.site-footer {
  background: var(--brand-navy);
  color: #ffffff;
  padding: var(--space-8) 0;
  margin-top: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(160px, 1fr));
  gap: var(--space-6);
  align-items: flex-start;
}

.footer-brand {
  display: grid;
  gap: var(--space-3);
  color: #ffffff;
}

.footer-logo img {
  display: block;
}

.footer-logo .custom-logo-link,
.footer-logo .footer-logo-link {
  display: inline-flex;
  align-items: center;
}

.footer-column h4 {
  margin: 0 0 var(--space-3);
  color: #ffffff;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.footer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.footer-menu a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
}

.footer-menu a:hover,
.footer-menu a:focus-visible {
  color: var(--brand-blue);
  text-decoration: underline;
}

.footer-note {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  margin: 0;
}

@media (max-width: 1024px) {
  .primary-menu {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .primary-navigation {
    width: 100%;
  }

  .primary-menu {
    flex-direction: column;
    align-items: flex-start;
  }

  .primary-menu > li {
    width: 100%;
  }

  .primary-menu a {
    width: 100%;
  }

  .primary-menu .sub-menu {
    position: static;
    transform: none;
    width: 100%;
    box-shadow: none;
    margin-top: 6px;
  }

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