/* Scroll-to-top — reading-progress ring */

.scroll-top {
	--scroll-p: 0;
	position: fixed;
	right: max(16px, env(safe-area-inset-right));
	bottom: max(20px, env(safe-area-inset-bottom));
	z-index: 60;
	display: inline-flex;
	align-items: center;
	gap: 0;
	width: 52px;
	height: 52px;
	padding: 0;
	border: 0;
	border-radius: 999px;
	background: rgba(6, 9, 24, 0.88);
	color: #fff;
	font-family: var(--wimira-font-heading);
	cursor: pointer;
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transform: translate3d(0, 18px, 0) scale(0.92);
	box-shadow: 0 10px 28px rgba(6, 9, 24, 0.28);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	transition:
		opacity 0.35s var(--wimira-ease),
		visibility 0.35s var(--wimira-ease),
		transform 0.45s var(--wimira-ease),
		width 0.35s var(--wimira-ease),
		background-color 0.25s var(--wimira-ease),
		gap 0.35s var(--wimira-ease),
		padding 0.35s var(--wimira-ease);
}

.scroll-top.is-visible {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
	transform: translate3d(0, 0, 0) scale(1);
}

.scroll-top:hover,
.scroll-top:focus-visible {
	width: 118px;
	gap: 8px;
	padding: 0 14px 0 6px;
	background: #0c0f1d;
}

.scroll-top:focus-visible {
	outline: 2px solid #fff;
	outline-offset: 3px;
}

.scroll-top__ring {
	position: absolute;
	inset: 0;
	width: 52px;
	height: 52px;
	transform: rotate(-90deg);
	pointer-events: none;
}

.scroll-top:hover .scroll-top__ring,
.scroll-top:focus-visible .scroll-top__ring {
	opacity: 0.35;
}

.scroll-top__track,
.scroll-top__progress {
	fill: none;
	stroke-width: 2.25;
}

.scroll-top__track {
	stroke: rgba(255, 255, 255, 0.16);
}

.scroll-top__progress {
	stroke: var(--wimira-red);
	stroke-linecap: round;
	transition: stroke-dashoffset 0.12s linear;
}

.scroll-top__core {
	position: relative;
	z-index: 1;
	display: grid;
	place-items: center;
	flex: none;
	width: 52px;
	height: 52px;
}

.scroll-top__icon,
.scroll-top__pct {
	grid-area: 1 / 1;
	transition: opacity 0.25s var(--wimira-ease), transform 0.25s var(--wimira-ease);
}

.scroll-top__icon {
	display: grid;
	place-items: center;
	width: 22px;
	height: 22px;
	color: #fff;
}

.scroll-top__icon svg {
	width: 100%;
	height: 100%;
}

.scroll-top__pct {
	font-size: 11px;
	font-weight: 700;
	letter-spacing: -0.02em;
	line-height: 1;
	opacity: 0;
	transform: translateY(4px) scale(0.9);
	color: #fff;
}

.scroll-top:hover .scroll-top__icon,
.scroll-top:focus-visible .scroll-top__icon {
	opacity: 0;
	transform: translateY(-6px);
}

.scroll-top:hover .scroll-top__pct,
.scroll-top:focus-visible .scroll-top__pct {
	opacity: 1;
	transform: none;
}

.scroll-top__label {
	position: relative;
	z-index: 1;
	max-width: 0;
	overflow: hidden;
	opacity: 0;
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	white-space: nowrap;
	transform: translateX(6px);
	transition:
		max-width 0.35s var(--wimira-ease),
		opacity 0.25s var(--wimira-ease),
		transform 0.35s var(--wimira-ease);
}

.scroll-top:hover .scroll-top__label,
.scroll-top:focus-visible .scroll-top__label {
	max-width: 48px;
	opacity: 1;
	transform: none;
}

.scroll-top.is-launching {
	transform: translate3d(0, -10px, 0) scale(0.96);
}

.scroll-top.is-launching .scroll-top__icon {
	animation: scroll-top-boost 0.55s var(--wimira-ease);
}

@keyframes scroll-top-boost {
	0% {
		transform: translateY(0);
	}
	40% {
		transform: translateY(-7px);
	}
	100% {
		transform: translateY(0);
	}
}

@media (max-width: 767px) {
	.scroll-top {
		right: max(12px, env(safe-area-inset-right));
		bottom: max(16px, env(safe-area-inset-bottom));
		width: 48px;
		height: 48px;
	}

	.scroll-top__ring,
	.scroll-top__core {
		width: 48px;
		height: 48px;
	}

	.scroll-top:hover,
	.scroll-top:focus-visible {
		width: 48px;
		gap: 0;
		padding: 0;
	}

	.scroll-top:hover .scroll-top__ring,
	.scroll-top:focus-visible .scroll-top__ring {
		opacity: 1;
	}

	.scroll-top:hover .scroll-top__icon,
	.scroll-top:focus-visible .scroll-top__icon {
		opacity: 1;
		transform: none;
	}

	.scroll-top:hover .scroll-top__pct,
	.scroll-top:focus-visible .scroll-top__pct,
	.scroll-top:hover .scroll-top__label,
	.scroll-top:focus-visible .scroll-top__label {
		opacity: 0;
		max-width: 0;
	}
}

@media (prefers-reduced-motion: reduce) {
	.scroll-top,
	.scroll-top__icon,
	.scroll-top__pct,
	.scroll-top__label,
	.scroll-top__progress {
		transition: none;
	}

	.scroll-top.is-launching .scroll-top__icon {
		animation: none;
	}
}