.navbar {
  background-color: var(--bg-white);
  position: sticky;
  top: 0;
  z-index: var(--z-overlay);
  padding: 1rem 0;
  box-shadow: 0 1px 0 var(--border-color), 0 4px 20px rgba(0, 0, 0, 0.07);
}

.dark-mode .navbar {
  box-shadow: 0 1px 0 var(--border-color), 0 4px 20px rgba(0, 0, 0, 0.25);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
  font-weight: var(--font-weight-semibold);
}

/* Hamburger button — hidden on desktop, shown on mobile */
.menu-btn {
  display: none;
}

@media (max-width: 768px) {
  .navbar {
    display: none;
  }

  .menu-btn {
    display: flex;
  }
}