/* =========================================================
   NAV
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-dark);
  border-bottom: 1px solid var(--color-dark-line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-dark-text);
}

.nav__brand span {
  color: var(--color-cyan);
}

/* Símbolo de marca — "cola pesada": la barra de navegación siempre es zona
   oscura (.site-header), así que el ícono va con colores fijos, nunca
   currentColor/tokens de zona clara (ver CLAUDE.md, sección del símbolo). */
.nav__brand-icon {
  flex: none;
  width: 22px;
  height: 22px;
}

.nav__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.nav__links a {
  color: var(--color-dark-text-soft);
  position: relative;
}

.nav__links a:hover {
  color: var(--color-cyan);
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-dark-line);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  font-family: var(--font-mono);
  color: var(--color-dark-text);
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-dark);
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-dark-line);
    display: none;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__toggle {
    display: inline-block;
  }
}