#scrollTopBtn.ssttb-scroll-top {
	position: fixed;
	right: 30px;
	bottom: 30px;
	z-index: 99999;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background-color: #111827;
	color: #ffffff;
	font-size: 20px;
	line-height: 1;
	cursor: pointer;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
	opacity: 0;
	visibility: hidden;
	transform: translateY(15px);
	transition:
		opacity 0.3s ease,
		transform 0.3s ease,
		visibility 0.3s,
		background-color 0.2s;
}

#scrollTopBtn.ssttb-scroll-top.show {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

#scrollTopBtn.ssttb-scroll-top:hover {
	background-color: #374151;
}

#scrollTopBtn.ssttb-scroll-top:focus-visible {
	outline: 3px solid #60a5fa;
	outline-offset: 3px;
}

@media (max-width: 600px) {
	#scrollTopBtn.ssttb-scroll-top {
		right: 18px;
		bottom: 18px;
		width: 44px;
		height: 44px;
	}
}

@media (prefers-reduced-motion: reduce) {
	#scrollTopBtn.ssttb-scroll-top {
		transition: none;
	}
}