::-webkit-scrollbar {
  -webkit-appearance: none;
  width: 7px;
}

::-webkit-scrollbar-thumb {
  border-radius: 4px;
  background-color: rgba(0,0,0,.5);
  box-shadow: 0 0 1px rgba(255,255,255,.5);
}

body {
  animation: fadeIn ease 1.5s;
	background: #444;
	color: white;
	font-family: sans-serif;
	margin: 0px;
  scroll-behavior: smooth;
}

@keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

.foreground {
	position: absolute;
	left: 5px;
	right: 5px;
	text-align: center;
  top: 5px;
  bottom: 5px;
}

#prevImage {
  display: none;
}

#helpOverlay {
  border-radius: 1em;
  bottom: 0;
  color: yellow;
  display: none;
  font-size: 1.2em;
  left: 0;
  overflow: scroll;
  position: fixed;
  right: 0;
  top: 0;
}

#helpOverlay.opened {
  display: block;
}

#helpOverlayInner {
  background-color: rgba(50, 50, 50, 0.95);
  bottom: 25px;
  left: 50px;
  right: 50px;
  top: 25px;
  position: fixed;
  padding: 25px 50px 25px 50px;
}

.helpSection {
  display: inline-block;
}

.helpSection h2 {
  color: orange;
  font-size: 18px;
  text-align: center;
}

dl.helplist {
  display: flex;
  flex-flow: row;
  flex-wrap: wrap;
  max-width: 400px;
  min-width: 300px;
  overflow: visible;
}

dl.helplist dt {
  color: orange;
  flex: 0 0 33%;
  font-weight: bold;
  padding-bottom: 5px;
  text-align: center;
  text-overflow: ellipsis;
  overflow: hidden;
}

dl.helplist dt span.separator {
  font-weight: normal;
  opacity: 0.75;
}

dl.helplist dd {
  flex: 0 0 67%;
  margin-left: auto;
  padding-bottom: 5px;
  text-align: left;
  text-overflow: ellipsis;
  overflow: hidden;
}

#helpOverlay a {
  color: inherit;
}

#nav {
  position: absolute;
  right: 0;
  top: 1px;
  white-space: nowrap;
  width: 11.5em;
}

.navbutton {
  background-color: black;
  border-color: grey;
  border-radius: 5px;
  color: grey;
  cursor: pointer;
  font-weight: bold;
  height: 2em;
  padding: 0;
  user-select: none;
  width: 2.5em;
}

.navbutton:disabled {
  color: #444;
}

.navbutton:hover:not([disabled]), .navbutton:focus {
  background-color: #444;
  border-color: yellow;
  color: yellow;
}

#close {
	position: absolute;
	right: -30px;
	top: -5px;
}

#header {
  height: 30px;
  text-align: left;
  z-index: 5;
}

#progress {
  position: absolute;
  left: 2.5em;
  height: 1.25em;
  right: 12em;
  top: 0.33em;
  text-align: right;
}

.meter {
  transition: width .3s;
}

#background {
  background-size: 100% 100%;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 20px;
}

/* Menu styling */

.menuButton {
  background-color: black;
  border: solid 1px grey;
  border-radius: 5px;
  color: grey;
  cursor: pointer;
  display: inline-block;
  padding: 0;
  text-decoration: none;
  width: 2.5em;
  height: 2.5em;
}

.menuButton:hover, .menuButton:focus {
  border: solid 1px yellow;
  color: yellow;
}

#menu {
  display: none;
  opacity: 0.875;
  text-align: left;
}

#menu.opened {
  display: block;
}

.menuSeparator {
  border-top: solid .1px yellow;
}

span.subMenuArrow,
span.menuItemKey {
  float: right;
  pointer-events: none;
}

span.menuCheckmark {
  float: left;
  pointer-events: none;
  width: 1.5em;
}

.fullScreenOverlay {
  background-color: rgba(50, 50, 50, 0.25);
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
}

.fullScreenOverlay.hidden {
  display: none;
}

ul.menuItems {
  background-color: black;
  border: solid 1px yellow;
  border-radius: 5px 5px 5px 5px;
  left: 5px;
  list-style: none;
  margin-top: 2px;
  position: absolute;
  top: 2em;
  width: 12em;
}

ul.menuItems#viewerContextMenuItems {
  width: 8em;
}

ul.menuItems li {
  margin-left: -40px;
}

.menuItem {
  background-color: black;
  border: none;
  color: yellow;
  cursor: pointer;
  font-size: 1em;
  margin: 2px;
  padding: 2px 5px;
  text-align: left;
  width: 98%;
}

#menu-open-local-files-input {
  display: none;
}

.menu-label {
  cursor: pointer;
}

.menuItem:hover {
  background-color: #444;
}

#menu-open-local-files input {
  cursor: pointer;
  font-size: 1em;
  margin: 0;
  opacity: 0;
  position: absolute;
}

div.pageDiv {
  overflow: scroll;
  position: absolute;
}

.pageDiv canvas {
  height: 100%;
  width: 100%;
}

.textDiv {
  background-color: #999;
}

#mainText {
  text-align: left;
  width: 90%;
  position: relative;
  top: 10px;
  background: #ccc;
  color: black;
  margin-right: auto;
  margin-left: auto;
  padding: 10px;
  word-wrap: break-word;
}

button:focus {
  outline: solid 2px yellow;
}

#header.preview {
  transition: opacity 1s ease;
  opacity: 0.7;
}

#header.previewout {
  opacity: 0;
}

/** Trays common styling */
.tray {
  border-color: grey;
  bottom: 1.5em;
  color: grey;
  cursor: pointer;
  display: -ms-flex;
  display: -webkit-flex;
  display: flex;
  opacity: 0.875;
  position: fixed;
  top: 2.5em;
  user-select: none;
  transition: margin-left .2s;
}

.trayButton {
  -ms-align-self: center;
  -webkit-align-self: center;
  align-self: center;
  background-color: black;
  border-color: inherit;
  border-style: solid;
  border-width: 1px;
  color: inherit;
  font-family: Cambria;
  font-size: 40px;
  height: 1.25em;
  padding: 0;
  user-select: none;
  width: 0.75em;
  z-index: 100;  
}

.trayContents {
  background-color: black;
  border-color: inherit;
  border-radius: 5px;
  border-style: solid;
  border-width: 1px;
  color: inherit;
  height: 100%;
  overflow: scroll;
  overflow-x: hidden;
  padding: 10px;
  padding-bottom: 0;
  scrollbar-color: yellow #444;
  text-align: left;
  white-space: nowrap;
}

.trayContents::-webkit-scrollbar-track {
  background-color: #444;
}

.trayContents::-webkit-scrollbar-thumb {
  background-color: yellow;
}

/** Reading Stack */

#readingStack {
  margin-left: -21em;
  left: 0px;
}

#readingStackButton {
  border-radius: 0 5px 5px 0;
  border-left: none;
  margin-left: -1px;
}

#readingStackButton:disabled {
  color: #444;
}

#readingStackButton.hidden {
  visibility: hidden;
}

#readingStackButton:hover:not([disabled]), #readingStackButton:focus {
  background-color: #444;
  color: yellow;
  border-color: yellow;
}

#readingStackContents {
  width: 20em;
}

#readingStack.opened {
  border-color: yellow;
  color: yellow;
  margin-left: 0;
}

.readingStackBookInner {
  float: left;
  max-width: 280px;
  overflow: hidden;
  pointer-events: none;
  text-overflow: ellipsis;
}

.readingStackBook {
  border-bottom: solid 1px grey;
  border-top: solid 1px black;
  overflow: hidden;
  padding: 4px;
}

.readingStackBook:hover {
  background-color: #444;
  border-bottom: solid 1px yellow;
  border-top: solid 1px yellow;
}

.readingStackFolder.collapsed div {
  display: none;
}

.readingStackFolder span.zippyButton::before {
  content: "▼ ";
}

.readingStackFolder.collapsed span.zippyButton::before {
  content: "▶ ";
}

/** Metadata Viewer */
#metadataViewer {
  margin-left: calc(31em - 25px);
  left: calc(100% - 31em - 5px);
}

#metadataViewerButton {
  border-radius: 5px 0 0 5px;
  border-right: none;
  margin-right: -1px;
}

#metadataViewerButton.hidden {
  visibility: hidden;
}

#metadataTrayContents {
  width: 30em;
}

#metadataViewer.opened {
  border-color: yellow;
  color: yellow;
  margin-left: 0;
}

.metadataTableContainer {
  height: calc(100% - 4em);
  overflow-y: scroll;
  position: absolute;
}

.metadataTable {
  border-collapse: collapse;
  table-layout: fixed;
  width: 100%;
}

.metadataTable tr {
  border-bottom: solid 2px yellow;
}

.metadataPropKey, .metadataPropValue {
  white-space: nowrap;
}

#metadataToolbar {
  position: absolute;
  left: 2.5em;
  bottom: 0;
  height: 2em;
}

.metadataButton {
  background-color: black;
  border: solid 1px grey;
  border-radius: 5px;
  color: grey;
  font-weight: bold;
  padding: 0;
  height: 2.5em;
  width: 2.5em;
  vertical-align: bottom;
}

.metadataButton:hover {
  border-color: yellow;
  color: yellow;
  cursor: pointer;
}

/* TODO: Remove current class and use focus for reading stack. */
.menuItem:focus,
.readingStackBook.current {
  background-color: #cc2929;
  outline: solid 2px yellow;
}

.readingStackBook.loaded {
  font-weight: bold;
}

.readingStackBookCloseButton {
  color: black;
  float: right;
  font-weight: bold;
}

.readingStackBookCloseButton:hover {
  color: yellow;
}

[draggable] {
  user-select: none;
}

.readingStackBook.dragging {
  opacity: 0.4;
}

.dropTarget {
  border-top: solid 2px yellow;
}

.hideEnableDirectoryElem {
  display: none;
}