.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  min-height: 66px;
  padding: 12px clamp(24px, 4.4vw, 58px);
  background: rgba(0, 3, 7, 0.9);
  border-bottom: 1px solid rgba(120, 166, 220, 0.12);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  display: block;
  width: auto;
  height: 84px;
  max-height: 84px;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(10px, 1.25vw, 24px);
  font: 900 0.76rem/1 var(--font-body);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.main-nav a {
  position: relative;
  opacity: 0.82;
  white-space: nowrap;
  transition: color 160ms ease, opacity 160ms ease;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -11px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--color-primary-light);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 160ms ease;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--color-text);
  opacity: 1;
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Iconos de redes sociales (header y contacto) */
.social-link {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--color-text-soft);
  border: 1px solid var(--color-border-soft);
  border-radius: 50%;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.social-link:hover {
  color: var(--color-primary-light);
  border-color: rgba(66, 164, 255, 0.6);
  background: rgba(8, 119, 239, 0.1);
}

.header-social {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-social .social-link {
  width: 34px;
  height: 34px;
}

.header-social .social-link svg {
  width: 16px;
  height: 16px;
}

.social-links {
  display: flex;
  gap: 10px;
  margin: 2px 0 24px;
}

.menu-toggle {
  display: none;
}
.menu-toggle:hover {
  border-color: rgba(66, 164, 255, 0.56);
}