.rg-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.9rem 1.5rem; background: var(--accent-light);
  border-bottom: 1px solid var(--accent-border); backdrop-filter: blur(8px);
  font-size: 13px;
}

.rg-nav-home {
  color: var(--accent); text-decoration: none; font-size: 16px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--accent-border);
  transition: all 0.2s ease; flex-shrink: 0;
}

.rg-nav-home:hover { border-color: var(--accent); transform: translateY(-1px); }

.rg-nav-brand { font-weight: 700; font-size: 16px; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 0.5rem; transition: opacity 0.2s ease; }
.rg-nav-brand:hover { opacity: 0.7; }

.rg-nav-applab, .rg-nav-domain {
  color: var(--accent); text-decoration: none; padding: 0.4rem 0.8rem;
  border: 1px solid var(--accent-border); border-radius: 6px;
  background: var(--accent-light); transition: all 0.2s ease; white-space: nowrap;
}

.rg-nav-applab:hover, .rg-nav-domain:hover { border-color: var(--accent); transform: translateY(-1px); }

.theme-toggle {
  width: 32px;
  height: 32px;
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  transform: scale(1.05);
}