@import url('https://fonts.googleapis.com/css?family=Work+Sans:300,400,700');

:focus {
	outline: 0 none transparent;
}

body {
	font-family: "Work Sans", sans-serif;
}

header h1 {
	margin-top: 0;
	padding: 0 1em;
}

ol {
	padding-left: 6ex;
}

ol li {
	line-height: 1.7em;
	padding-right: 12px;
}

.fit {
	position: absolute;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
}

.row,
.column {
	display: flex;
	height: 100%;
}
.row {
	flex-direction: row;
}
.column {
	flex-direction: column;
}

.cell {
	flex: 1 1 0;
	min-height: 0;
	position: relative;
}
.cell.fixed {
	flex: 0 0 auto;
}

.body {
	height: 100%;
}

.list {
	margin-right: 12px;
	max-width: 25%;
	overflow: auto;
}
.list.collapsed {
	max-width: 0;
}

.list ol {
	margin-top: 0;
}

.list li {
	cursor: pointer;
}
.list li:hover {
	text-decoration: underline;
}

.preview {
	width: 0;
}

.preview-header {
	padding: 0 12px;
	border: 1px solid #ddd;
	border-radius: 9px 9px 0 0;
	background-color: #eee;
	line-height: 2em;
}

.preview-image {
	height: 100%;
	width: 100%;
	overflow: auto;
	border: 1px solid #ddd;
	border-top-width: 0;
	box-sizing: border-box;
}
.preview-image:focus-within::before {
	content: "zoom out";
	position: fixed;
	z-index: 1;
	transform: rotate(90deg) translateX(100%) translateY(100%);
	right: 0;
	transform-origin: top right;
	padding: 0 6px;
	line-height: 1.4em;
	border: 1px solid #ccc;
	border-radius: 6px;
	margin: 3px;
	background-color: #f8f8f8;
	box-shadow: 2px -1px 3px 0px rgba(0, 0, 0, 0.2);
	cursor: zoom-out;
}

button {
	background-color: #fff;
	background-image: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1));
	border: 1px solid #ddd;
	border-radius: 6px;
	box-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
	line-height: 1.5em;
	padding: 0 1ex;
	font-size: 16px;
}
button.active {
	background-image: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2), transparent);
	background-color: #36ceff;
	color: white;
	border-color: #2aa6ce;
}

.buttonbox {
	display: inline-block;
	margin: 0 1ex;
}
.buttonbox button {
	border-radius: 0;
}
.buttonbox button + button {
	border-left-color: transparent;
}
.buttonbox button:first-child {
	border-radius: 6px 0 0 6px;
}
.buttonbox button:last-child  {
	border-radius: 0 6px 6px 0;
}
.buttonbox button.active {
	border-left-color: #2aa6ce;
}

#title {
	display: inline;
}
#image {
	cursor: zoom-in;
	display: block;
	margin: 0 auto;
	max-width: 100%;
	max-height: 100%;
}
#image:focus {
	transform: scale(4);
	transform-origin: top left;
	cursor: crosshair;
	image-rendering: pixelated;
}