:root {
	--col-bg: #bcb;
	--col-main: #444;
	--col-hl: #d60;
	--col-mute: #777;
	--opacity-lightmode-textbackground: 80%;
	--size-smol: 0.2in;
	--size-mid: 0.3in;
	--size-big: 0.5in;
	--pad-1: 0.1in;
}

@media (prefers-color-scheme: dark) {
	:root {
		--col-bg: #122;
		--col-main: #eef;
		--col-mute: #aab;
	}
}

html, body {
	color: var(--col-main);
	margin: 0;
	padding: 0;
	font-family: sans-serif;
	font-size: var(--size-mid);
}

@media screen and (max-width: 800px) {
	html, body {
		font-size: var(--size-smol);
	}
}

html {
	background-color: var(--col-bg);
}

body {
	position: relative;
	min-height: 100%;
	height: 100svh;
	top: 0;
}

a {
	color: var(--col-hl);
	text-decoration: none;
}

a:hover {
	cursor: pointer;
	text-decoration: underline;
}

.mute {
	line-height: 80%;
	font-size: var(--size-smol);
	color: var(--col-mute);
}

#video-box, #background-video {
	position: fixed;
	width: 100%;
}

#video-box {
	height: 100vh; /* in case lvh isn't supported */
	height: 100lvh;
	z-index: -1;
}

#background-video {
	height: 100%;
	object-fit: cover;
	pointer-events: none;
}

#head {
	height: var(--size-big);
	padding: var(--size-mid);
	column-gap: var(--size-mid);
	background: color-mix(in srgb, var(--col-bg) var(--opacity-lightmode-textbackground), transparent);
}

@media screen and (max-width: 1000px) {
	#head {
		flex-direction: column;
	}
}

#content {
	display: flex;
	margin-top: 15vh;
	padding-bottom: 5em;
	flex-direction: column;
	align-items: center;
}

#content div {
	padding: var(--pad-1);
	background: color-mix(in srgb, var(--col-bg) var(--opacity-lightmode-textbackground), transparent);
}

#important-links {
	display: flex;
	gap: var(--pad-1);
}

#important-links a:before{
	content: " →";
}

#events-list {
	display: flex;
	width: 70vw;
	padding: 0;
	gap: 1em;
	overflow-x: scroll;
}

div#events-list {
	background: none;
}

#events-list div {
	background-color: transparent;
}

#events-list event-card {
	min-width: 12em;
	min-height: 9em;
	border: 2px solid var(--col-main);
}

event-card p {
	font-size: var(--size-smol);
}

#what-is-this {
	max-width: 780px; 
}

#about-content {
	display: flex;
	margin-top: 15vh;
	padding-bottom: 5em;
	flex-direction: column;
	align-items: center;
}

#about-content p {
	padding: 1em;
	max-width: 1200px
}

.compo-rules {
	max-width: 1200px;
}

#timetable td {
	padding: 0 1em;
}

#timetable td:nth-child(5) {
	display: none;
}

@media screen and (max-width: 430px) {
	#timetable td {
		padding: 0 var(--pad-1);
	}
	#timetable td:nth-child(2), #timetable td:nth-child(4) {
		display: none;
	}
}

#staff-list {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-evenly;
	gap: 1em;
}

.staff-member {
	border: 2px solid var(--col-mute);
	border-radius: 1em;
}

.profile {
	display: grid;
	gap: 0.5em;
	grid-template-columns: auto 1fr;
	align-items: center;
}

.profile h3 {
	margin: 0;
}

.contact-via {
	padding: 0.5em;
}

#log-title {
	padding: 0 2em;
}

#log-content img {
	max-width: 100vw;
}

.instructions h1, .instructions h2, .instructions h3 {
	counter-reset: step;
}

.instructions .step {
	counter-increment: step;
}

.instructions .step img {
	max-width: 100vw;
}

.instructions .step::before {
	content: "step " counter(step) "：";
}

#subject-to-change {
	position: sticky;
	z-index: 10;
	background: var(--col-bg);
	border: 2px solid var(--col-main);
	padding: var(--pad-1);
	right: var(--pad-1);
	bottom: var(--pad-1);
}

#change-language {
	position: absolute;
	right: 1em;
	top: 1em;
	background: var(--col-bg);
}

@media (prefers-color-scheme: dark) {
	#background-video {
		filter: brightness(0.45);
	}

	#head, #content div {
		background: transparent;
	}
}

.WIP {
	text-decoration: line-through !important;
	color: var(--col-mute) !important;
}