/* Tier 2 secondary navigation band */
.tier2-nav {
  border-bottom: 1px solid var(--border-color);
  background: var(--sidebar-bg);
  height: var(--tier2-height);
  padding: 0 1.5rem;
  z-index: 100;
}

.tier2-container {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 0;
}

.tier2-tab {
  padding: 0 1rem;
  height: 100%;
  display: flex;
  align-items: center;
  font-size: var(--sidebar-font-size);
  font-weight: 500;
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.tier2-tab:hover {
  color: var(--union-color-dark);
  text-decoration: none;
}

.tier2-tab.active {
  color: var(--union-color-dark);
  border-bottom-color: var(--union-color-dark);
  font-weight: 600;
}