:root {
	--hm-helper-accent: #7f91aa;
}

.btn-back-to-top,
.btn-hm-comments {
	position: fixed;
	inset-block-end: var(--hm-helper-btn-inset-block-end, 1.25rem);
	inset-inline-end: var(--hm-helper-btn-inset-inline-end, 1.25rem);
	z-index: var(--hm-helper-btn-z-index, 99);
	box-sizing: border-box;
	display: flex;
	align-items: center;
	justify-content: center;
	width: var(--hm-helper-btn-size, 3rem);
	height: var(--hm-helper-btn-size, 3rem);
	border: 1px solid var(--hm-helper-btn-border, transparent);
	border-radius: var(--hm-helper-btn-radius, 50%);
	background: var(--hm-helper-btn-bg, var(--hm-helper-accent, #7f91aa));
	color: var(--hm-helper-btn-fg, #fff);
	box-shadow: var(--hm-helper-btn-shadow, 0 2px 8px rgba(0, 0, 0, 0.2));
	text-decoration: none;
	cursor: pointer;
}

body:has(#hm-comments) .btn-back-to-top {
	inset-inline-end: calc(var(--hm-helper-btn-inset-inline-end, 1.25rem) + var(--hm-helper-btn-size, 3rem) + var(--hm-helper-btn-gap, 0.75rem));
}

.hm-back-to-top-svg,
.hm-comments-svg {
	display: block;
	width: var(--hm-helper-btn-icon-size, 1.375rem);
	height: var(--hm-helper-btn-icon-size, 1.375rem);
}

.btn-back-to-top {
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.25s ease, visibility 0.25s;
}

.btn-back-to-top.is-visible {
	opacity: 1;
	visibility: visible;
}

@media (prefers-reduced-motion: reduce) {

	.btn-back-to-top {
		transition: none;
	}
}

.hm-comments-num {
	position: absolute;
	inset-block-start: -5px;
	inset-inline-end: -5px;
	min-width: 1rem;
	padding: 0 0.2rem;
	border-radius: var(--hm-helper-badge-radius, 999px);
	background: var(--hm-helper-badge-bg, #c0554f);
	color: var(--hm-helper-badge-fg, #fff);
	font-size: var(--hm-helper-badge-font-size, 0.6875rem);
	font-weight: 700;
	line-height: 1rem;
	text-align: center;
}