/* #header-navigation-contents {
	background-image: url(../index/images/nav-contents.svg);
} */


/***/
#navigation-contents {
	position: fixed;
	top: 50px;
	right: 0;
	bottom: 0;
	width: 259px;
	z-index: 99;
	box-shadow: 0 0 20px rgba(0,0,0,.25);;
	background-color: var(--black);
	-webkit-overflow-scrolling: touch;
}
html.tools-toggle #navigation-contents,
html.fullscreen-toggle #navigation-contents {
	width: 309px;
}
html.tools-toggle.fullscreen-toggle #navigation-contents {
	width: 359px;
}


#navigation-contents-container {
	background-color: var(--black-light);
	width: 100%;
	height: 100%;
	overflow-x: hidden;
	overflow-y: auto;
}
html.multi-books #navigation-contents-container {
	background-color: var(--black);
}


#navigation-book-tabs {
	display: grid;
	align-content: flex-end;
	/* grid-template-columns: repeat(x, 1fr); */
	gap: 5px;
	padding: 10px 10px 0;
	border-bottom: 1px solid var(--black);
	background-color: var(--black);
}
html.no-mobile #navigation-book-tabs {
	position: sticky;
	top: 0;
	z-index: 1;
}
html.no-mobile #navigation-book-tabs.sticky-no {
	visibility: hidden;
}
.navigation-book-tab {
	flex: 1 1 auto;
	border-top-left-radius: 5px;
	border-top-right-radius: 5px;
	padding: 10px;
	min-height: 39px;
	cursor: pointer;
	color: #fff;
	display: flex;
	align-items: center;
}
.navigation-book-tab.selected {
	background-color: var(--black-light);
	pointer-events: none;
}
html.no-touch .navigation-book-tab:hover {
	background-color: var(--grey-hover);
}
.navigation-book-tab > div {
	font-size: .7em;
}


#navigation-contents-wrapper {
	background-color: var(--black-light);
	width: 100%;
	height: auto;
	padding: 10px;
}

.navigation-contents-link {
	color: #fff;
	padding: 10px;
}
.navigation-contents-link > div {
	font-size: .7em;
}
.navigation-contents-link[data-index]:not(.disabled) {
	cursor: pointer;
}
.navigation-contents-link.disabled > div {
	opacity: var(--opacity-disabled);
}
.navigation-contents-link.selected {
	color: #fff;
	background-color: var(--color-2);
	pointer-events: none;
}
.navigation-contents-link.highlighted:not([data-index])::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	border-top: 2px solid var(--color-2);
}
.navigation-contents-link.highlighted[data-index]::after {
	content: '';
	position: absolute;
	left: 0;
	top: 0;
	bottom: 0;
	border-right: 4px solid var(--color-2);
}

.navigation-contents-link[data-index]:not(.disabled):hover > div {
	text-decoration: underline;
}


/***/
html.mobile.navigation-contents-visible #header-breadcrumb,
html.mobile.navigation-contents-visible #header-content-links-toggle,
html.mobile.navigation-contents-visible #contents {
	display: none !important;
}

html.mobile #navigation-contents {
	position: relative;
	top: auto;
	right: auto;
	bottom: auto;
	width: 100% !important;
	box-shadow: none;
}

html.mobile .navigation-contents-link:first-child {
	margin-top: 0;
}
html.mobile .navigation-contents-link:last-child {
	margin-bottom: 1em;
}