@media (max-width: 991.98px) {
    /* Filter panel slide-out */
    .filter-panel-container {
        position: fixed;
        top: 0;
        left: -100%;
        width: 300px;
        height: 100vh;
        z-index: 1050;
        transition: left 0.3s ease;
        background: white;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }

    .filter-panel-container.show {
        left: 0;
    }

    .filter-panel {
        height: 100%;
        overflow-y: auto;
        border: none;
    }

    .filter-content {
        padding: 1.5rem;
        padding-top: 2rem;
    }

    /* Backdrop */
    .filter-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .filter-backdrop.show {
        opacity: 1;
        visibility: visible;
    }
}