Overleaf/services/web/public/stylesheets/app/editor.less

@import "./editor/file-tree.less";
@import "./editor/history.less";
@import "./editor/toolbar.less";
@import "./editor/left-menu.less";
@import "./editor/pdf.less";
@import "./editor/enago.less";
@import "./editor/share.less";
@import "./editor/chat.less";
@import "./editor/binary-file.less";
@import "./editor/search.less";
@import "./editor/publish-template.less";
@import "./editor/online-users.less";
@import "./editor/hotkeys.less";
@import "./editor/review-panel.less";
@import "./editor/rich-text.less";
@import "./editor/publish-modal.less";

@ui-layout-toggler-def-height: 50px;
@ui-resizer-size: 7px;

@keyframes blink {
	0% { 
		opacity: 0.2;
	}
	20% { 
		opacity: 1;
	}
	100% { 
		opacity: 0.2;
	}
}

.editor-menu-icon when (@is-overleaf = true) {
	&.fa {
		width: 1em;
		background: @editor-header-logo-background;
		
		&::before {
			// Disable the font-awesome icon when in Overleaf by replacing it with a
			// non-breakable space instead (otherwise the browser would render a 
			// zero-width element).
			content: "\00a0"; 
		}
	}
}

.full-size {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
}

.global-alerts {
	height: 0;
	margin-top: 2px;
	text-align: center;

	.alert {
		display: inline-block;
		text-align: left;
		min-width: 400px;
		padding: @global-alerts-padding;
		font-size: 14px;
		margin-bottom: (@line-height-computed / 4);
		position: relative;
		z-index: 20;
	}
}
	#try-reconnect-now-button {
		margin-left: 20px;
	}

	#synctex-more-info-button {
		margin-left: 20px;
	}

#ide-body {
	.full-size;
	top: @ide-body-top-offset;
	&.ide-history-open {
		top: @ide-body-top-offset + @editor-toolbar-height;
	}
}


#editor, #editor-rich-text {
	.full-size;
	top: 32px;
}

#editor-rich-text {
	top: @editor-toolbar-height;
}

.toolbar-editor {
	height: @editor-toolbar-height;
	background-color: @editor-toolbar-bg;
	padding: 0 5px;
	overflow: hidden;
	position: relative;
	z-index: 10; // Prevent track changes showing over toolbar
}

.loading-screen {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 100%;
	height: 100%;
	background-color: #FFF;
}
	.loading-screen-brand-container {
		width: 15%;
		min-width: 200px;
		text-align: center;
	}
		.loading-screen-brand {
			position: relative;
			width: 100%;
			padding-top: @editor-loading-logo-padding-top;
			height: 0;
			background: @editor-loading-logo-background-url no-repeat bottom / 100%;

			&::after {
				content: '';
				position: absolute;
				height: inherit;
				right: 0;
				bottom: 0;
				left: 0;
				background: @editor-loading-logo-foreground-url no-repeat bottom / 100%;
				transition: height .5s;
			}
		}
		.loading-screen-label {
			margin: 0;
			padding-top: 1em;
			font-size: 2em;
			color: @gray-dark;
		}
			.loading-screen-ellip {
				animation: blink 1.4s both infinite;
				&:nth-child(2) {
					animation-delay: 0.2s;
				}
				&:nth-child(3) {
					animation-delay: 0.4s;
				}
			}

		.loading-screen-error {
			margin: 0;
			padding-top: 1em;
			color: @state-danger-text;
		}


.loading-panel {
	.full-size;
	padding-top: 10rem;
	font-family: @font-family-serif;
	text-align: center;
	background-color: #fafafa;
}

.error-panel {
	.full-size;
	padding: @line-height-computed;
	background-color: #fafafa;
	.alert {
		max-width: 400px;
		margin: auto;
	}
}

.project-name {
	.name {
		display: inline-block;
		max-width: 250px;
		overflow: hidden;
		text-overflow: ellipsis;
		vertical-align: top;
		padding: 6px;
		color: @project-name-color;
		font-weight: 700;
		white-space: nowrap;
	}
	input {
		height: 30px;
		margin-top: 4px;
		text-align: center;
		padding: 6px;
		font-weight: 700;
	}
	a.rename {
		visibility: hidden;
		display: inline-block;
		color: @project-rename-link-color;
		padding: 5px;
		border-radius: @border-radius-small;
		&:hover {
			text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
			color: @project-rename-link-color-hover;
			text-decoration: none;
		}
	}
	&:hover {
		a.rename {
			visibility: visible;
		}
	}
}

/**************************************
Ace
***************************************/

// The internal components of the aceEditor directive
.ace-editor-wrapper {
	.full-size;
	.undo-conflict-warning {
		position: absolute;
		top: 0;
		right: 0;
		left: 0;
		z-index: 10;
	}
	.ace-editor-body {
		width: 100%;
		height: 100%;
	}
	.spelling-highlight {
		position: absolute;
		background-image: url(/img/spellcheck-underline.png);
		@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
			background-image: url(/img/spellcheck-underline@2x.png);
			background-size: 5px 4px;
		}
		background-repeat: repeat-x;
		background-position: bottom left;
	}
	.remote-cursor {
		position: absolute;
		border-left: 2px solid transparent;
		// Adds "nubbin" top right of cursor, which inherits the injected color
		&::before {
			content: '';
			position: absolute;
			left: -2px;
			top: -5px;
			height: 5px;
			width: 5px;
			border-top-width: 3px;
			border-right-width: 3px;
			border-bottom-width: 2px;
			border-left-width: 2px;
			border-style: solid;
			border-color: inherit;
		}
	}
	.annotation-label {
		padding: (@line-height-computed / 4) (@line-height-computed / 2);
		font-size: 0.8rem;
		z-index: 100;
		font-family: @font-family-sans-serif;
		color: white;
		font-weight: 700;
		white-space: nowrap;
	}
	.annotation {
		position: absolute;
		z-index: 2;
	}
	.highlights-before-label, .highlights-after-label {
		position: absolute;
		right: @line-height-computed;
		z-index: 1;
	}
	.highlights-before-label {
		top:   @line-height-computed / 2;
	}
	.highlights-after-label {
		bottom: @line-height-computed / 2;
	}
}

.strike-through-foreground::after {
	content: '';
	position: absolute;
	width: 100%;
	top: 50%;
	margin-top: -1px;
	height: 2px;
	background: currentColor;
}

// Hack to solve an issue where scrollbars aren't visible in Safari.
// Safari seems to clip part of the scrollbar element. By giving the 
// element a background, we're telling Safari that it *really* needs to 
// paint the whole area. See https://github.com/ajaxorg/ace/issues/2872
.ace_scrollbar-inner {
	background-color: #FFF;
	opacity: 0.01;

	.ace_dark & {
		background-color: #000;
	}
}

/**************************************
CodeMirror
***************************************/
.cm-editor-wrapper {
	position: relative;
	height: 100%;
}

.cm-editor-body {
	height: 100%;
}

// CM (for some reason) has height set to 300px in it's stylesheet
.CodeMirror {
	height: 100%;
}

.ui-layout-resizer when (@is-overleaf = false) {
	width: 6px;
	background-color: @editor-resizer-bg-color;
	border-left: 1px solid @editor-border-color;
	border-right: 1px solid @editor-border-color;
	.ui-layout-toggler {
		color: #999;
		font-family: FontAwesome;
		font-style: normal;
		font-weight: normal;
		line-height: 1;
		-webkit-font-smoothing: antialiased;
		-moz-osx-font-smoothing: grayscale;
		font-size: 16px !important;
		line-height: 50px;
		background-color: @editor-toggler-bg-color;
		&:hover {
			background-color: @editor-toggler-hover-bg-color;
			color: #333;
		}
	}
}

.ui-layout-resizer when (@is-overleaf = true) {
	width: @ui-resizer-size !important;
	background-color: @editor-resizer-bg-color;
	&.ui-layout-resizer-closed {
		&::before,
		&::after {
			content: none;
		}
	}

	&::before,
	&::after {
		content: '\2847';
		display: block;
		position: absolute;
		text-align: center;
		left: -2px;
		-webkit-font-smoothing: antialiased;
		width: 100%;
		font-size: 24px;
		top: 25%;
		color: @ol-blue-gray-2;
	}
	&::after {
		top: 75%;
	}
}

.ui-layout-resizer-west.ui-layout-resizer-open, .ui-layout-resizer-east.ui-layout-resizer-closed {
	.ui-layout-toggler when (@is-overleaf = false) {
		&:before {
			content: "\f104"
		}
	}
}
.ui-layout-resizer-east.ui-layout-resizer-open, .ui-layout-resizer-west.ui-layout-resizer-closed {
	.ui-layout-toggler when (@is-overleaf = false) {
		&:before {
			content: "\f105"
		}
	}
}

.ui-layout-toggler when (@is-overleaf = true) {
	display: none !important;
}

.custom-toggler when (@is-overleaf = true) {
	position: absolute;
	display: flex;
	align-items: center;
	justify-content: center;
	width: @ui-resizer-size !important;
	height: 50px;
	margin-top: -25px;
	top: 50%;
	z-index: 3;
	background-color: @editor-toggler-bg-color;

	&:hover,
	&:focus {
		outline: none;
		text-decoration: none;
	}
	// Increase hit area
	&::before {
		content: '';
		display: block;
		position: absolute;
		top: 0;
		right: -3px;
		bottom: 0;
		left: -3px;
	}

	&::after {
    	font-family: FontAwesome;
    	-webkit-font-smoothing: antialiased;
		-moz-osx-font-smoothing: grayscale;
    	font-size: 65%;
    	font-weight: bold;
		color: #FFF;
		user-select: none;
		pointer-events: none;
	}

	&:hover {
		background-color: @editor-toggler-hover-bg-color;
	}
}
	.custom-toggler-east::after {
		content: '\f105';
	}
	.custom-toggler-west::after {
		content: '\f104';
	}

	.custom-toggler-closed.custom-toggler-east::after {
		content: '\f104';
	}
	.custom-toggler-closed.custom-toggler-west::after {
		content: '\f105';
	}

.ui-layout-resizer-dragging {
	background-color: @editor-resizer-bg-color-dragging;
}

.context-menu {
	position: fixed;
	z-index: 100;
}

.editor-dark {
	color: @gray-lighter;
	background-color: @editor-dark-background-color;
	
	.ui-layout-resizer {
		background-color: darken(@editor-dark-background-color, 10%);
		border: none;
	}
	
	.btn-default {
		color: white;
		background-color: @gray;
		border-color: darken(@gray-dark, 10%);
		&:hover {
			background-color: darken(@gray, 5%);
			border-color: darken(@gray-dark, 20%);
			
		}
	}
}

.modal-alert {
	margin-top:10px;
	margin-bottom:0px;
}

// vertically centre the "connection down" modal so it does not hide
// the reconnecting indicator

.modal.lock-editor-modal {
	display: flex !important;
	.modal-dialog {
		margin: auto;
	}
}

.sl_references_search_hint {
	position: relative;
	top: 100%;
}

.sl_references_search_hint {
	position: relative;
	left: -1px;
	text-align: center;
	padding: 2px;
	background: rgb(202, 214, 250);
	border: 1px solid lightgray;
	box-shadow: 3px 3px 5px rgba(0,0,0,.2);

	span {
		color: black;
	}
}

// -- References Search Modal --
.references-search-modal-backdrop {
	// don't grey out the editor when the
	// modal is active
	background-color: transparent;
}
.references-search-modal {
	// upgrade prompt
	.references-search-upgrade-prompt {
		padding: 24px;
		padding-bottom: 48px;
		.upgrade-prompt {
			text-align: center;
			width: 400px;
			padding-top: 14px;
			padding-bottom: 14px;
			padding-left: 38px;
			padding-right: 38px;
			margin: auto;
			background: white;
			opacity: 0.95;
			border-radius: 8px;
			.message {
				margin-top: 15px;
				&.call-to-action {
					font-weight: bold;
				}
				ul.list-unstyled {
					text-align: left;
				}
			}
			a.btn {
				opacity: 1.0;
			}
		}
	}
	.search-form {
		// position the spinner inside the input element
		i.fa-spinner {
			margin-top: -30px;
		}
	}
	.alert-danger {
		margin-top: 12px;
		margin-bottom: 0px;
	}
	// search result items list
	.search-results {
		font-size: 12px;
		.no-results-message {
			font-size: 16px;
		}
		.search-result-hit {
			&:hover {
				cursor: pointer;
			}
			border-bottom: 1px solid #ddd;
			padding: 8px;
			&:last-child {
				border-bottom: 1px solid transparent;
			}
			border-left: 4px solid transparent;
			&.selected-search-result-hit {
				background-color: @red;
				color: white;
				.hit-year.small {
					color: white;
				}
				.hit-journal.small {
					color: white;
				}
			}
			.hit-title {
				font-size: 1.3em;
				font-style: italic;
			}
		}
	}
}

.referencesImportModal {
	.referencesImportPreviewScroller {
		font-family: monospace;
		font-size: 0.8em;
		max-height: 360px;
		overflow: scroll;
		white-space: pre;
		padding: 8px 12px;
		margin-bottom: 15px;
		border: 1px solid @gray-lighter;
		background-color: @gray-lightest;
	}
}

.teaser-title,
.dropbox-teaser-title {
	margin-top: 0;
	text-align: center;
}

.teaser-img,
.dropbox-teaser-img {
	.img-responsive;
	margin-bottom: 5px;
}

.teaser-video-container,
.dropbox-teaser-video-container {
	margin-top: -@modal-inner-padding;
	margin-left: -@modal-inner-padding;
	margin-right: -@modal-inner-padding;
	margin-bottom: 5px;
	overflow: hidden;
}

.teaser-video,
.dropbox-teaser-video {
	width: 100%;
	height: auto;
	border-bottom: 1px solid @modal-header-border-color;
}

.spell-check-menu {
	> .dropdown-menu > li > a {
		padding: 2px 15px;
	}
}

.spell-check-menu-from-bottom {
	> .dropdown-menu {
		top: auto;
		bottom: 100%;
	}
}