@media (max-width: 768px) {
    .erp-filter-bar, .filters { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 540px) {
    .erp-filter-bar, .filters { grid-template-columns: 1fr; }
    .erp-content { padding: var(--erp-space-2); }
}