@charset "utf-8";

html {
	--main-image-size: calc(min(100vh,100vw));
	background-image: url("./img/logo.jpeg");
	background-repeat: no-repeat;
	background-position: center;
	background-attachment: fixed;
	background-size: var(--main-image-size);
}

body {
	padding: 0;
	margin: 0;
	min-height: 100vh;

	display: flex;
	flex-direction: column;
	justify-content: space-between;

	background-color: rgba(255,255,250,0.75);
}

main {
	box-sizing: border-box;
	padding: 0.5rem 2rem 1rem;
	margin: 1rem auto;
	background-color: rgba(255,255,255,0.85);
	border: 0 solid rgba(255,200,200, 0.8);
	border-width: 0.5rem;
	position: relative;
}

main > * {
	margin-left: auto;
	margin-right: auto;
	max-width: 40rem;
}

img {
	width: 100%;
}

header {
	position: sticky;
	top: 0;
	z-index: 1;
	background-color: rgba(255,235,235,0.75);
	transition: background-color 0.75s;
}

header:hover {
	background-color: rgba(255,255,255,1);
}


figure {
	margin: 0;
}

header, footer {
	flex-grow: unset;
}

footer {
	display: flex;
	flex-direction: column;
	justify-content: end;
	text-align: center;
}

header > nav > ul {
	margin: 0 auto;
	padding: 0;
	list-style: none;
	max-width: fit-content;

	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	
}

header > nav > ul > li {
	text-align: center;
}

header > nav > ul > li > a {
	display: block;
	padding: 0.25em 0.5em;
	color: #600;
}

h1 {
	margin-top: 1rem;
	margin-bottom: 1rem;
}

h1 > small {
	display: block;
	font-size: 40%;
}

h2 {
	border-bottom: 1px solid #666;
}


figcaption {
	text-align: center;
}

.by {
	text-align: right;
}

iframe.gmap {
	display: block;
	margin: auto;
	height: 30rem;
	width: 40rem;
	max-width: 100vw;
	max-height: 100vh;
}


dt:before {
	content: "■";
}

@media (max-width: 30rem) {
	/* 左右のボーダーは幅の狭い端末では邪魔 */
	main {
		border-width: 0.5rem 0;
	}

	header {
		background-color: rgba(255,235,235,1);
	}
}

@media print {
	
	header nav {
		display: none;
	}
}