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

@stripe-width: 20px;
@keyframes pdf-toolbar-stripes {
  from  { background-position: 0 0; }
  to    { background-position: @stripe-width 0; }
}

.pdf .toolbar.toolbar-pdf when (@is-overleaf = true) {
	.toolbar-small-mixin;
	.toolbar-alt-mixin;
	border-bottom: 0;
	padding-right: 5px;
	&.uncompiled-changes {
		#gradient > .striped(@color: rgba(255,255,255,.10), @angle: -45deg);
		background-size: @stripe-width @stripe-width;
		.animation(pdf-toolbar-stripes 2s linear infinite);
	}
	.auto-compile-status {
		color: white;
		margin-right: (@line-height-computed / 2);
		i {
			color: @brand-danger;
		}
	}
}

.pdf .toolbar.toolbar-pdf when (@is-overleaf = false) {
	.toolbar-tall-mixin;
	padding: 0 (@line-height-computed / 2);
	.auto-compile-status {
		display: none;
	}
}

.pdf {
	background-color: @pdf-bg;
}

.pdf-viewer, .pdf-logs, .pdf-errors, .pdf-uncompiled {
	.full-size;
	top: @pdf-top-offset;
}

.pdf-logs, .pdf-errors, .pdf-uncompiled, .pdf-validation-problems{
	padding: @line-height-computed / 2;
}

.pdf-uncompiled {
	.fa {
		color: @blue;
	}
}

.btn-recompile-group when (@is-overleaf = true) {
	align-self: stretch;
	margin-right: 6px;
	.btn-recompile {
		height: 100%;
		.btn-primary;
		padding-top: 3px;
		padding-bottom: 3px;
		&:first-child {
			border-top-left-radius: 0;
			border-bottom-left-radius: 0;
		}
		&[disabled] {
			background-color: mix(@btn-primary-bg, @toolbar-alt-bg-color, 65%);
			.opacity(1.0);
		}
	}
}

.btn-recompile-group when (@is-overleaf = false) {
	margin-right: (@line-height-computed / 2);
	.btn-recompile {
		.btn-info;
	}
}

.btn-split-screen when (@is-overleaf = false) {
	.fa {
		display: none;
	}
}
.btn-split-screen when (@is-overleaf = true) {
	.fa {
		display: none;
	}
}

.pdf-viewer {
	iframe {
		width: 100%;
		height: 100%;
		border: none;
	}
	.pdfjs-viewer {
		.full-size;
		background-color: @pdfjs-bg;
		overflow: scroll;
		canvas, div.pdf-canvas {
			background: white;
			box-shadow: @pdf-page-shadow-color 0px 0px 10px;
		}
		div.pdf-canvas.pdfng-empty {
			background-color: white;
		}
		div.pdf-canvas.pdfng-loading {
			background-color: white;
		}
		.page-container {
			margin: 10px auto;
			padding: 0 10px;
			box-sizing: content-box;
			user-select: none;
		}
	}
	.progress-thin {
		position: absolute;
		top: -2px;
		height: 3px;
		left: 0;
		right: 0;
		.progress-bar {
			height: 100%;
			background-color: @link-color;
		}
	}
	.pdfjs-controls {
		position: absolute;
		padding: @line-height-computed / 2;
		top: 0;
		left: 0;
		display: inline-block;
		.btn-group {
			transition: opacity 0.5s ease, visibility 0 linear 0.5s;
			visibility: hidden;
			opacity: 0;
		}
		&:hover, &.flash {
			.btn-group {
				transition: none;
				visibility: visible;
				opacity: 1;
			}
		}
		i.fa-arrows-h {
			border-right: 2px solid white;
			border-left: 2px solid white;
		}
		i.fa-arrows-v {
			border-top: 2px solid white;
			border-bottom: 2px solid white;
		}
	}
}

.pdf .toolbar {
	.toolbar-right {
		a {
			&:hover {
				i when (@is-overleaf = false) {
					box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.25);
					border-color: @gray-dark;
				}
			}
			i when (@is-overleaf = false) {
				display: inline-block;
				width: 16px;
				height: 16px;
				border: 1px solid @gray-light;
			}

			i.full-screen {
				border-top-width: 3px;
				border-radius: 2px;
			}

			i.full-screen when (@is-overleaf = true) {
				display: none;
			}
			i.split-screen {
				width: 7px;
				border-top-width: 3px;
				border-radius: 2px;
				margin-left: 2px;
			}

			i.split-screen when (@is-overleaf = true) {
				display: none;
			}

			i.fa when (@is-overleaf = false) {
				display: none;
			}
		}
	}
}

.pdf-logs {
	overflow: auto;
	.alert {
		font-size: 0.9rem;
		margin-bottom: @line-height-computed / 2;
		cursor: pointer;
		.line-no {
			float: right;
			color: @log-line-no-color;
			font-weight: 700;

			.fa {
				opacity: 0;
			}
		}
		.entry-message {
			font-weight: 700;
			//font-family: @font-family-monospace;
		}
		.entry-content {
			white-space: pre-wrap;
			font-size: 0.8rem;
			//font-family: @font-family-monospace;
		}

		&:hover .line-no {
			color: inherit;
			.fa {
				opacity: 1;
			}
		}

		&.alert-danger {
			background-color: tint(@alert-danger-bg, 15%);
			&:hover {
				background-color: @alert-danger-bg;
			}
		}

		&.alert-warning {
			background-color: tint(@alert-warning-bg, 15%);
			&:hover {
				background-color: @alert-warning-bg;
			}
		}

		&.alert-info {
			background-color: tint(@alert-info-bg, 15%);
			&:hover {
				background-color: @alert-info-bg;
			}
		}

	}
	pre {
		font-size: 12px;
	}
	.dropdown {
		position: relative;
	}
	.force-recompile {
		margin-top: 10px;
		text-align: right;
	}
}

.synctex-controls {
	position: absolute;
	z-index: @synctex-controls-z-index;
	padding: @synctex-controls-padding;
	top: 68px;
}

.synctex-controls when (@is-overleaf = true) {
	margin-right: -8px;
}
	.synctex-control {
		display: block;
		margin-bottom: 3px;

		> .synctex-control-icon {
			display: inline-block;
			font: normal normal normal 14px/1 FontAwesome;
			font-size: inherit;
			text-rendering: auto;
			-webkit-font-smoothing: antialiased;
			-moz-osx-font-smoothing: grayscale;
		}
	}

	.synctex-control when (@is-overleaf = true) {
		@ol-synctex-control-size: 24px;
		display: flex;
		align-items: center;
		justify-content: center;
		font-size: 1em;
		width: @ol-synctex-control-size;
		height: @ol-synctex-control-size;
		border-radius: @ol-synctex-control-size / 2;
		padding: 0 0 2px;
		background-color: fade(@btn-default-bg, 80%);
		transition: background 0.15s ease;
		margin-bottom: @ol-synctex-control-size / 2;
	}

	.synctex-control when (@is-overleaf = false) {
		line-height: 1.3;
		padding: 0 2px;
	}
	
	.synctex-control-goto-pdf > .synctex-control-icon when (@is-overleaf = true) {
		text-indent: 1px; // "Optical" adjustment.
		&::before {
			content: "\f061";		
		}
	}
	.synctex-control-goto-code > .synctex-control-icon when (@is-overleaf = true) {
		text-indent: -1px; // "Optical" adjustment.
		&::before {
			content: "\f060";		
		}
	}
	
	.synctex-control-goto-pdf > .synctex-control-icon::before when (@is-overleaf = false) {
		content: "\f178";		
	}
	.synctex-control-goto-code > .synctex-control-icon::before when (@is-overleaf = false) {
		content: "\f177";		
	}

.editor-dark {
	.pdf-logs {
		background-color: lighten(@editor-dark-background-color, 10%);
	}
	.pdfjs-viewer {
		background-color: lighten(@editor-dark-background-color, 10%);
	}
	.pdf .toolbar {
		.toolbar-right a {
			i {
				border-color: @gray;
			}
			&:hover {
				i {
					border-color: @gray-light;
				}
			}
		}
	}
}

.keyboard-tooltip {
	.tooltip-inner {
		max-width: none;
	}
}

.keyboard-shortcut {
	white-space: nowrap;
}


@keyframes expand-feedback-area {
	from {
		max-height: 0;
	}

	to {
		max-height: 500px;
	}
}

.card-hint:extend(.card-thin) {
	margin-top: 10px;
	padding-bottom: 7px;
	cursor: default;

	&-icon-container {
		background: currentColor;
		width: 2.5rem;
		height: 2.5rem;
		font-size: 1.5rem;
		text-align: center;
		border-radius: 50%;
		float: left;
		margin-right: 10px;

		.fa {
			color: #FFF;
		}

		.alert-danger & {
			color: @state-danger-border;
		}

		.alert-warning & {
			color: @state-warning-border;
		}

		.alert-info & {
			color: @state-info-border;
		}

	}

	&-text, 
	&-feedback-label {
		color: @log-hints-color;
		font-size: 0.9rem;
		margin-bottom: 20px;
	}

	&-text {
		min-height: 35px;
	}

	&-feedback-label {
		font-size: inherit;
		margin-right: 0.5em;
		margin-bottom: 0;
		font-weight: normal;
	}

	&-ext-link,
	&-feedback {
		display: inline-block;
		font-size: 0.8rem;
	}
	
	&-actions a,
	&-text a {
		.alert-danger & {
			color: @state-danger-text;
		}

		.alert-warning & {
			color: @state-warning-text;
		}

		.alert-info & {
			color: @state-info-text;
		}
	}

	&-feedback {
		color: @log-hints-color;
		float: right;
	}

	&-extra-feedback {
		color: @log-hints-color;
		font-size: 0.8rem;
		margin-top: 10px;
		padding-bottom: 5px;
		animation: 0.5s ease-out expand-feedback-area;
		overflow: hidden;

		&-label {
			margin: 5px 0 10px;
			padding-top: 5px;
			border-top: solid 1px @gray-lighter;
		}

		.radio {
			margin: 5px;
		}

		textarea {
			font-size: 0.8rem;
			margin-bottom: 10px;
			padding: 5px;
		}

		input[type="radio"] {
			margin-top: 2px;
		}
	}

	& + p {
		margin-top: 20px;
	}

}

.files-dropdown-container {
	.pull-right();
	position: relative;
}

	.files-dropdown {
		display: inline-block;
	}

.plv-text-layer {
	display: none;
	user-select: text;
	
	.pdf-page-container:hover &,
	.pdfjs-viewer-show-text & {
		display: block;
	}
}