/*
  nav.css
  Top navigation bar: crest logo, menu, CTA.
*/

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-950);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}

.brand__crest { width: 42px; height: 42px; flex-shrink: 0; }

.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
}
.brand__tagline {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--gold-400);
  text-transform: uppercase;
  margin-top: 3px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-menu a {
  color: rgba(255,255,255,0.82);
  font-family: var(--font-display);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.nav-menu a:hover,
.nav-menu a.is-active {
  color: #fff;
  border-color: var(--gold-500);
}

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--navy-900);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    transform: translateY(-140%);
    transition: transform 0.25s ease;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .nav-menu.is-open { transform: translateY(0); }
  .nav-toggle { display: block; }
}