:root,
html[data-theme="dark"] {
	--bg: #1f252d;
	--panel: #27303a;
	--menu: #2b3541;
	--menu-2: #222b35;
	--text: #e8edf3;
	--muted: #b7c1cc;
	--border: #3a4654;
	--hover: #344152;
	--active: #3f5166;
	--link: #c5ced8;
	--link-hover: #f1f5f9;
	--canvas-border: #0f141a;
	--controller-bg: #39495d;
	--button-box-bg: #2a3544;
}

html[data-theme="light"] {
	--bg: #f2f5f9;
	--panel: #ffffff;
	--menu: #e8edf3;
	--menu-2: #dde5ee;
	--text: #1b2530;
	--muted: #4b5a6b;
	--border: #c8d3df;
	--hover: #dce6f2;
	--active: #cedced;
	--link: #3b526e;
	--link-hover: #1f2e40;
	--canvas-border: #aebdcd;
	--controller-bg: #dbe4ef;
	--button-box-bg: #c8d3df;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	padding: 0;
	background: var(--bg);
	color: var(--text);
	font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

.container {
	width: min(1320px, 95%);
	margin: 0 auto;
}

.topbar {
	background: linear-gradient(90deg, var(--menu), var(--menu-2));
	border-top: 1px solid #44526433;
	border-bottom: 1px solid #12171d33;
}

.topbar-row {
	min-height: 56px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
}

.topnav {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
}

.nav-link {
	color: var(--text);
	text-decoration: none;
	padding: 1rem 1.1rem;
	border-left: 1px solid rgba(255, 255, 255, .08);
	border-right: 1px solid rgba(0, 0, 0, .25);
	font-weight: 600;
}

.nav-link:hover {
	background: var(--hover);
}

.nav-link.active {
	background: var(--active);
	color: #fff;
}

.theme-toggle {
	border: 1px solid var(--border);
	background: var(--panel);
	color: var(--text);
	border-radius: 8px;
	padding: .45rem .8rem;
	font-weight: 600;
	cursor: pointer;
}

.theme-toggle:hover {
	background: var(--hover);
}

.page-content {
	padding: 1.25rem 0 2rem;
}

.panel {
	background: var(--panel);
	border: 1px solid var(--border);
	border-radius: 10px;
	padding: 1.25rem;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

h1,
h2 {
	text-align: center;
	margin-top: 0;
	color: var(--text);
}

h2 {
	color: var(--muted);
}

canvas {
	border: 1px solid var(--canvas-border);
	display: block;
	margin: 0 auto;
	max-width: 100%;
	height: auto;
	background: #000;
	border-radius: 6px;
}

.controller-border {
	padding: 24px;
	touch-action: manipulation;
	text-align: center;
	font-size: 1rem;
}

.controller {
	background-color: var(--controller-bg);
	border: 1px solid var(--border);
	width: min(1150px, 100%);
	text-align: center;
	border-radius: 200px;
	padding: 25px;
	margin: 0 auto;
}

.button-box {
	display: inline-block;
	border: 1px solid var(--border);
	text-align: center;
	width: 360px;
	max-width: 100%;
	border-radius: 200px;
	padding: 10px;
	background-color: var(--button-box-bg);
}

.button {
	border: 2px solid #111;
	border-radius: 60px;
	font-size: 40px;
	padding: 25px;
}

.button-start {
	background-color: #999;
}

.button-round {
	background-color: #f14;
	color: white;
	display: inline-block;
	margin: 4px 2px;
	user-select: none;
}

.buttonA {
	background-color: #f14;
}

.buttonB {
	background-color: #ff0;
	color: #111;
}

.buttonX {
	background-color: #00f;
}

.buttonY {
	background-color: #0f0;
	color: #111;
}

.button-divider {
	width: 75px;
	display: inline-block;
}

.body-border h2,
.body-border p {
	text-align: center;
}

.accordion {
	background: var(--menu);
	color: var(--text);
	cursor: pointer;
	padding: 18px;
	width: 100%;
	border: 1px solid var(--border);
	text-align: center;
	font-size: 1.2rem;
	transition: 0.2s;
	font-weight: 700;
	border-radius: 8px;
	margin-bottom: 0.5rem;
}

.active,
.accordion:hover {
	background: var(--hover);
}

.panel-inner {
	padding: 0.75rem 1rem;
	display: none;
	background: rgba(255, 255, 255, 0.03);
	border: 1px solid var(--border);
	border-radius: 8px;
	overflow: hidden;
	font-size: 1rem;
	margin-bottom: 0.75rem;
	color: var(--muted);
}

.panel-inner ul {
	margin: 0;
	padding-left: 1.2rem;
}

a,
a:visited {
	color: var(--link);
}

a:hover {
	color: var(--link-hover);
}

@media (max-width: 760px) {
	.topbar-row {
		flex-direction: column;
		align-items: stretch;
		padding: .35rem 0;
	}

	.topnav {
		justify-content: center;
	}

	.theme-toggle {
		align-self: center;
		margin-bottom: .35rem;
	}

	.button {
		font-size: 28px;
		padding: 16px;
	}
}