/* 画像の拡大表示（inc/lightbox.php・js/lightbox.js）。旧 Simple Lightbox の slb_black テーマに寄せた黒背景 */
.kougaku-lightbox {
	position: fixed;
	inset: 0;
	z-index: 100000;
	background: rgba(0, 0, 0, 0.8);
	display: flex;
	align-items: center;
	justify-content: center;
}
.kougaku-lightbox[hidden] {
	display: none;
}
.kougaku-lightbox-open {
	overflow: hidden; /* 拡大表示中は後ろのページをスクロールさせない */
}
.kougaku-lightbox-inner {
	display: flex;
	flex-direction: column;
	align-items: center;
	max-width: 100%;
	max-height: 100%;
	padding: 48px 56px;
	box-sizing: border-box;
}
.kougaku-lightbox-image {
	max-width: 100%;
	max-height: calc(100vh - 140px);
	width: auto;
	height: auto;
	box-shadow: 0 0 20px rgba(0, 0, 0, 0.6);
	background: #fff;
}
.kougaku-lightbox-caption,
.kougaku-lightbox-count {
	color: #fff;
	font-size: 14px;
	line-height: 1.5;
	margin: 10px 0 0;
	text-align: center;
}
.kougaku-lightbox-caption:empty,
.kougaku-lightbox-count:empty {
	display: none;
}
.kougaku-lightbox button {
	position: absolute;
	border: 0;
	background: transparent;
	color: #fff;
	cursor: pointer;
	padding: 0;
	line-height: 1;
	opacity: 0.8;
}
.kougaku-lightbox button:hover {
	opacity: 1;
}
.kougaku-lightbox-close {
	top: 8px;
	right: 12px;
	font-size: 40px;
}
.kougaku-lightbox-prev,
.kougaku-lightbox-next {
	top: 50%;
	transform: translateY(-50%);
	font-size: 56px;
	width: 48px;
	height: 80px;
}
.kougaku-lightbox-prev {
	left: 4px;
}
.kougaku-lightbox-next {
	right: 4px;
}
.kougaku-lightbox.is-single .kougaku-lightbox-prev,
.kougaku-lightbox.is-single .kougaku-lightbox-next {
	display: none; /* 画像が 1 枚だけなら前後ボタンは出さない */
}
@media (max-width: 600px) {
	.kougaku-lightbox-inner {
		padding: 40px 12px;
	}
	.kougaku-lightbox-prev,
	.kougaku-lightbox-next {
		font-size: 44px;
		width: 36px;
	}
}