body {
	background-color: #1f2937;
	color: #fff;
	font-family: Noto Serif, serif;
	--columns: 2;
	--rows: 2;
}

body.wide {
	--columns: 4;
	--rows: 1;
}

.centering {
	display: flex;
	flex-direction: column;
	align-items: center;
}

#main {
	display: grid;
	grid-template-columns: repeat(var(--columns), max-content);
	grid-template-rows: repeat(var(--rows), max-content);
	gap: 2em;
}

.solution {
	text-align: center;
	width: inherit;
	display: block;
	font-size: x-large;
	display: none;
}

.row {
	margin-top: 0;
	margin-bottom: 0;
}

.invalid {
	color: red;
}

.correct {
	background-color: rgb(0 204 136);
	color: #000;
}

.wrong-position {
	background-color: rgb(255 204 0);
	color: #000;
}

.cell {
	position: relative;

	display: inline-flex;
	justify-content: center;
	align-items: center;

	padding: 0.5em;
	width: 1em;
	height: 1em;
	font-family: monospace;
	font-size: xx-large;
	border: 1px solid #bbb;
	vertical-align: top;

	transition: height 0.25s;
}

.cell.done {
	height: 0.5em;
}

.counter {
	display: none;
}

.count .counter {
	display: block;
	position: absolute;
	bottom: 0px;
	right: 0px;
	font-size: smaller;
}

#keyboard {
	margin-top: 1em;
}

.key {
	display: inline-flex;
	align-items: center;
	justify-content: center;

	width: 1.5em;
	height: 1.5em;
	font-size: xx-large;
	margin: 0.05em;
	vertical-align: top;
	color: #fff;
	background-color: rgb(107 114 128);
	border-color: rgb(55 65 81);
	border-radius: 5px;

	cursor: pointer;
}

#backspace, #enter {
	width: 3em;
	margin-left: 0.1em;
	margin-right: 0.1em;
}

#share {
	display: none;
	font-size: xx-large;
	padding: 0.5em;
}

#summary {
	display: none;
	font-size: xx-large;
}

#copied-to-clipboard {
	display: none;
}

#options {
	margin-top: 1em;
}

#copyarea {
	display: none;
	background-color: #1f2937;
	color: #fff;
	width: 20em;
	height: 10em;
}

@media (max-width: 600px) {
	#main {
		gap: 10px;
	}
	.cell {
		box-sizing: border-box;
		padding: 0.5em;

		width: 9vw;
		height: 9vw;
	}
	.cell.done {
		height: 4.5vw;
	}
	.key {
		box-sizing: border-box;
		width: 7.6vw;
		height: 7.6vw;
		font-size: x-large;
	}

	#backspace, #enter {
		width: 15.2vw;
		height: 7.6vw;
	}
}