* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	--hue: 223;
	--bg: hsl(var(--hue),10%,90%);
	--fg: hsl(var(--hue),10%,10%);
	--primary: hsl(var(--hue),90%,55%);
	--disabled: hsl(var(--hue),10%,75%);
	font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320));
}
body, button {
	font: 1em/1.5 Hind, sans-serif;
}
body {
	background: var(--bg);
	color: var(--fg);
	height: 100vh;
	display: grid;
	place-items: center;
}
button {
	background: hsl(var(--hue),90%,55%);
	border-radius: 0.2em;
	color: #fff;
	cursor: pointer;
	margin: auto;
	padding: 0.5em 1em;
	position: relative;
	left: 50%;
	transform: translateX(-50%);
	text-align: center;
	transition: background 0.15s linear;
}
button:hover {
	background: hsl(var(--hue),90%,45%);
}
.sp {
	--incTrans: 0.1; /* in seconds */
	display: block;
	margin-bottom: 1.5em;
	overflow: visible;
	width: 12.75em;
	height: 1.5em;
}
.sp__bar, .sp__hub {
	stroke: var(--disabled);
}
.sp__hub--done, .sp__dot--done {
	transition: r 0.2s cubic-bezier(0,0,0.33,1.67);
}
.sp__hub--done {
	r: 10px;
}
.sp__hub--done ~ .sp__bar-fill {
	transition: all calc(1s * var(--incTrans)) linear;
}
.sp__bar-fill, .sp__hub-fill {
	stroke: var(--primary);
}
.sp__bar-fill {
	stroke-dasharray: 40 40;
	stroke-dashoffset: 40;
}
.sp__hub-fill {
	stroke-dasharray: 0 62.8 0;
	visibility: hidden;
}
.sp__hub-fill--done {
	stroke-dasharray: 31.4 0 31.4;
	transition: all 0.2s 0.2s ease-out;
	visibility: visible;
}
.sp__dot {
	fill: var(--primary);
}
.sp__dot--done {
	r: 4px;
	transition-delay: 0.4s;
}
.status {
	margin-bottom: 4.5em;
	text-align: center;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: hsl(var(--hue),10%,10%);
		--fg: hsl(var(--hue),10%,90%);
		--primary: hsl(var(--hue),90%,65%);
		--disabled: hsl(var(--hue),10%,30%);
	}
}