.scroll-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            cursor: pointer;
            opacity: 0;
            transition: opacity 0.3s, transform 0.3s;
            z-index: 1000;
            padding: 0;
        }
        .scroll-to-top.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .scroll-to-top:hover {
            transform: translateY(-5px);
        }
        .scroll-to-top-icon {
            width: 100%;
            height: 100%;
        }