/* Scroll wrapper for the handle */
        .scroll-wrapper {
            position: fixed;
            right: 5px;
            top: 10%;
            height: 80%;
            width: 20px; /* Invisible area for easier grabbing */
            display: none; /* Default: hidden on larger screens */
            justify-content: center;
            align-items: center;
            z-index: 999;
        }

        /* Scroll handle design */
        .scroll-handle {
            position: absolute;
            width: 6px;
            height: 50px;
            background: rgba(0, 0, 0, 0.5);
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s, width 0.2s;
        }

        .scroll-handle:hover {
            background: rgba(0, 0, 0, 0.8);
            width: 8px;
        }

        /* nly show the scroll handle on mobile screens (≤768px) */
        @media (max-width: 768px) {
            .scroll-wrapper {
                display: flex;
            }
        }