/* assets/css/responsive.css */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 260px;
    }

    .sidebar {
        left: -260px; /* Hide by default */
    }

    .sidebar.active {
        left: 0;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 15px;
    }

    .menu-toggle {
        display: block;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .header-bar {
        flex-direction: row-reverse;
        justify-content: space-between;
    }
}