/* ============================================================
   nav.css — fixed navigation bar
   ============================================================ */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 4rem;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

nav.scrolled {
  border-bottom-color: var(--rule);
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    gap: 1.5rem;
  }
}