@import 'breakpoints';
@import 'colors';

* {
	box-sizing: border-box;
	font-family: sans-serif;
	margin: 0;
	padding: 0;
}

body {
	color: $color-text;
	display: flex;
	flex-direction: column;
	margin: 0 auto;
	min-height: 100vh;
	max-width: $large;

	main {
		flex-grow: 1;
	}
}

header, footer {
	padding: 0 1rem;
}

header {
	align-items: center;
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	margin-top: 0.5rem;

	pre {
		font-family: monospace;
		font-size: 0.8rem;
		line-height: 1;
		user-select: none;
	}

	nav {
		font-size: 1.2rem;
	}
}

main {
	padding: 1rem;
}

footer {
	margin-bottom: 0.5rem;

	nav {
		align-items: end;

		@media screen and (min-width: $small) {
			align-items: normal;
			justify-content: end;
		}
	}
}

nav {
	display: flex;
	flex-direction: column;

	&.nav-toggleable {
		flex-basis: 100%;
		max-height: 0;
		overflow-y: hidden;
		transition: max-height 0.5s;

		.nav-toggle:checked ~ & {
			max-height: calc(var(--num-elements) * 2em);
		}
	}

	a {
		line-height: 1.5em;
		margin: 0.5em 0 0 0;
	}

	@media screen and (min-width: $small) {
		flex-direction: row;

		&.nav-toggleable {
			flex-basis: auto;
			max-height: max-content;
		}

		a {
			margin: 0 0 0 1em;
		}
	}
}

a {
	color: currentColor;
	text-decoration: none;

	&:hover {
		text-decoration: underline;
	}

	&.is-active {
		color: $color-highlight;

		&:hover {
			text-decoration: none;
		}
	}
}

h1, h2, h3, h4, h5, h6 {
	margin-bottom: 0.5em;
}

p {
	margin-bottom: 1em;
}

.nav-burger {
	cursor: pointer;
	display: flex;
	flex-direction: column;
	height: 1rem;
	justify-content: space-between;
	width: 1.2rem;

	div {
		border: 1px solid #aaa;
		transition: border-color 0.5s, transform 0.5s;
	}

	.nav-toggle:checked ~ & div {
		border-color: transparent;

		&:first-child {
			border-color: #aaa;
			transform: translateY(0.5rem) translateY(-1px) rotate(45deg) scaleX(141%);
		}

		&:last-child {
			border-color: #aaa;
			transform: translateY(-0.5rem) translateY(1px) rotate(-45deg) scaleX(141%);
		}
	}

	@media screen and (min-width: $small) {
		display: none;
	}
}

.nav-toggle {
	display: none;
}