website/sass/css/header.scss

@import "defs";

header {
	position: sticky;
	z-index: 10;
	top: 0;
	display: flex;
	justify-content: space-between;
	max-width: 1100px;
	height: 48px;
	margin: 0 auto 16px auto;
	padding: 0 4px;
	font-size: 24px;
}

#header-logo {
	height: 48px;
}

#header-logo:hover, #header-logo:focus {
	filter: drop-shadow(1px 2px 1px $violet);
}

#header-menu > ul {
	list-style-type: none;
	margin: 9px 0 0 0;
}

#header-menu > ul li {
	display: inline-block;
	margin: 0 8px;
}

#header-menu a {
	padding: 8px 8px;
	color: black;
}

#header-menu a:hover, #header-menu a:focus {
	text-shadow: 1px 2px 1px $violet;
	text-decoration: none;
}

@media (prefers-color-scheme: light) {
	header, .header-menu-phone {
		background-color: white;
	}
}

@media (prefers-color-scheme: dark) {
	#header-menu a {
		color: white;
	}
	
	header, .header-menu-phone {
		background-color: black;
	}
}

@media (min-width: 960px) { 
	.phone-only {
		display: none;
	}
}

@media (max-width: 959px) { 
	.phone-hidden {
		display: none;
	}
}

.header-menu-phone {
	position: fixed;
	z-index: 5;
	top: 48px;
	left: 0;
	padding: 16px;
	max-height: calc(100vh - 48px);
	overflow-y: auto;
	margin-top: 0;
	box-sizing: border-box;
	border-left: 2px solid $violet;
	list-style: none;
}

.header-menu-phone-logo {
	max-width: 100%;
	width: 256px;
}

.hamburger-menu {
	font-size: 150%;
	margin: 0.25em;
	font-family: LunaSans;
}

.hamburger-menu:hover, .hamburger-menu:focus {
	opacity: 100%;
}

.hamburger-menu > summary {
	list-style: none;
	cursor: pointer;
}