:root {
	--bg-main: #f3f3f3;
	--bg-bright: white;

	--text-main: #232323;
	--accent: #351e75;
	
	--highlight: #ffa74d;
	--highlight-major: #fb701a;
	--shadow: rgba(80, 80, 80, 0.5);
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg-main: #232323;
		--bg-bright: black;

		--text-main: #f3f3f3;
		--shadow: rgba(5, 5, 5, 0.5);
	}

	#output-graph > div {
		filter: invert(100%);
	}
}

html, body {
	margin: 0;
	padding: 0;
	font-size: 100%;
}

body {
	min-height: 100vh;
	font-family: Ubuntu, sans-serif;
	background: var(--bg-main);
	color: var(--text-main);

	display: grid;
	grid-template-columns: 1fr;
	grid-template-rows: auto 75vh 1fr auto;
	grid-template-areas: "header"
		"summary"
		"controls"
		"graph"
		"footer";
}

h1 {
	grid-area: header;
	margin: 0.5em;
	text-align: center;
}

textarea, input, #output-graph {
	background: var(--bg-bright);
	color: var(--text-main);
	border: 0.2em dashed var(--accent);
}

#input-summary {
	grid-area: summary;
}

#controls-intermediate {
	grid-area: controls;
	display: flex;
	justify-content: center;
}

#output-graph {
	grid-area: graph;
	overflow-x: scroll;

	margin: 1em 0;
	border-left-width: 0;
	border-right-width: 0;
}

footer {
	grid-area: footer;
	margin: 1em 1em 0.5em 1em;
}


.icon {
	max-width: 1.25em;
	vertical-align: middle;
}

.action-button.major {
	background: var(--highlight-major);
}

.action-button {
	margin: 1em;
	display: inline-block;
	padding: .35em .45em;
	border-radius: .25em;
	background: var(--highlight);
	color: var(--text-main);
	font-size: 1.25em;
	text-decoration: none;
	box-shadow: 0 0 .5em var(--shadow);
	cursor: pointer;
	transition: box-shadow .25s, transform .25s;
}
.action-button:hover {
	box-shadow: 0 .25em .65em var(--shadow);
	transform: translateY(-.25em);
}
.action-button:active {
	box-shadow: 0 0 .25em var(--shadow);
	transform: translateY(.1em)
}