style.scss

.editor-block-list__block {
	margin-bottom: $block-spacing;
	position: relative;
	padding: $block-padding;

	@include break-small {
		// The block mover needs to stay inside the block to allow clicks when hovering the block
		padding: $block-padding $block-padding + $block-mover-padding-visible;
	}

	&:before {
		z-index: z-index( '.editor-block-list__block:before' );
		content: '';
		position: absolute;
		top: 0;
		bottom: 0;
		left: 0;
		right: 0;
		outline: 1px solid transparent;

		@include break-small {
			left: $block-mover-padding-visible;
			right: $block-mover-padding-visible;
		}
	}

	&.has-warning .editor-block-list__block-edit {
		position: relative;
		min-height: 250px;

		> :not( .editor-warning ) {
			pointer-events: none;
			user-select: none;
		}
	}

	&.has-warning .editor-block-list__block-edit:after {
		content: '';
		position: absolute;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
		background-color: rgba( $white, 0.6 );
	}

	// simpler style for a block that has cursor focus (but hasn't been selected)
	&.is-selected > .editor-block-mover:before,
	&.is-hovered > .editor-block-mover:before,
	&.is-selected > .editor-block-settings-menu:before,
	&.is-hovered > .editor-block-settings-menu:before {
		content: '';
		position: absolute;
		height: 36px;
		top: 10px;
	}

	&.is-selected > .editor-block-mover:before,
	&.is-hovered > .editor-block-mover:before {
		border-right: 1px solid $light-gray-500;
		right: 6px;
	}

	&.is-reusable.is-selected > .editor-block-mover:before {
		border-right: none;
	}

	&.is-selected > .editor-block-settings-menu:before,
	&.is-hovered > .editor-block-settings-menu:before {
		border-left: 1px solid $light-gray-500;
		left: 6px;
	}

	&.is-reusable.is-selected > .editor-block-settings-menu:before {
		border-left: none;
	}

	// focused block-style
	&.is-selected:before {
 		outline: 1px solid $light-gray-500;
	}

	// give reusable blocks a dashed outline
	&.is-reusable.is-selected:before {
		outline: 1px dashed $light-gray-500;
	}

	// selection style for textarea
	::-moz-selection {
		background: $blue-medium-highlight;
	}

	::selection {
		background: $blue-medium-highlight;
	}

	// selection style for multiple blocks
	&.is-multi-selected *::selection {
		background: transparent;
	}

	&.is-multi-selected:before {
		background: $blue-medium-highlight;
	}

	.iframe-overlay {
		position: relative;
	}

	.iframe-overlay:before {
		content: '';
		display: block;
		position: absolute;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
	}

	&.is-selected .iframe-overlay:before {
		display: none;
	}

	// Alignments
	&[data-align="left"],
	&[data-align="right"] {
		// Without z-index, won't be clickable as "above" adjacent content
		z-index: z-index( '.editor-block-list__block {core/image aligned left or right}' );
		max-width: 370px;
	}

	&[data-align="left"] {
		float: left;

		// mobile, and no sidebars
		margin-right: $block-padding;

		// sidebar (folded)
		.auto-fold .editor-layout:not( .is-sidebar-opened ) & {
			@include editor-width( $admin-sidebar-width-collapsed + $visual-editor-max-width - $block-padding ) {
				margin-left: $float-margin;
			}
		}

		// sidebar (sticky)
		.sticky-menu .editor-layout:not( .is-sidebar-opened ) & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width - $block-padding ) {
				margin-left: $float-margin;
			}
		}

		// sidebar (sticky) and post settings
		.sticky-menu .editor-layout & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width + $sidebar-width - $block-padding ) {
				margin-left: $float-margin;
			}
		}

		// sidebar and post settings
		.auto-fold .is-sidebar-opened & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width + $sidebar-width ) {
				margin-left: $float-margin;
			}
		}
	}

	&[data-align="right"] {
		float: right;

		// mobile, and no sidebars
		margin-right: $block-padding;

		// sidebar (folded)
		.auto-fold .editor-layout:not( .is-sidebar-opened ) & {
			@include editor-width( $admin-sidebar-width-collapsed + $visual-editor-max-width - $block-padding ) {
				margin-right: $float-margin;
			}
		}

		// sidebar (sticky)
		.sticky-menu .editor-layout:not( .is-sidebar-opened ) & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width - $block-padding ) {
				margin-right: $float-margin;
			}
		}

		// sidebar (sticky) and post settings
		.sticky-menu .editor-layout & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width + $sidebar-width - $block-padding ) {
				margin-right: $float-margin;
			}
		}

		// sidebar and post settings
		.auto-fold .is-sidebar-opened & {
			@include editor-width( $admin-sidebar-width + $visual-editor-max-width + $sidebar-width ) {
				margin-right: $float-margin;
			}
		}
	}

	&[data-align="full"] {
		padding-left: 0;
		padding-right: 0;

		&:before {
			left: 0;
			right: 0;
			border-left-width: 0;
			border-right-width: 0;
		}

		.editor-block-mover {
			display: none;
		}

		@include break-wide() {
			.editor-block-mover {
				display: block;
				top: -29px;
				left: 10px;
				height: auto;

				&:before {
					content: none;
				}
			}

			.editor-block-mover__control {
				float: left;
				margin-right: 8px;
			}
		}

		.editor-block-settings-menu__control {
			float: left;
			margin-right: 8px;
		}

		.editor-block-settings-menu {
			top: -41px;
			right: 10px;
			height: auto;

			&:before {
				content: none;
			}
		}
	}

	&[data-clear="true"] {
		float: none;
	}

	& > .components-drop-zone {
		border: none;
		top: -4px;
		bottom: -4px;
		margin: 0 $block-mover-padding-visible;
		border-radius: 0;

		.components-drop-zone__content {
			display: none;
		}

		&.is-close-to-top {
			background: none;
			border-top: 3px solid $blue-medium-500;
		}

		&.is-close-to-bottom {
			background: none;
			border-bottom: 3px solid $blue-medium-500;
		}
	}

	> .editor-block-settings-menu {
		position: absolute;
		top: 2px;
		right: 4px;
		padding: 13px 0 17px 8px; // handles hover area

		// Mobile
		display: none;

		@include break-small {
			display: flex;
			flex-direction: column;
		}
	}

	> .editor-block-mover {
		position: absolute;
		top: 2px;
		left: 4px;
		height: $text-editor-font-size * 4; // same height as an empty paragraph
		padding: 4px 14px 6px 0; // handles hover area
		z-index: z-index( '.editor-block-mover' );

		// Mobile, to be revisited
		display: none;
		@include break-small {
			display: block;
		}
	}

	// Mobile tools
	.editor-block-list__block-mobile-toolbar {
		display: flex;
		flex-direction: row;
		margin-top: $item-spacing;

		@include break-small() {
			display: none;
		}

		// Movers & trash
		.editor-block-settings-menu__toggle,
		& > .editor-block-settings-menu__control,
		.editor-block-mover__control {
			width: 36px;
			height: 36px;
			padding: 3px;
			text-indent: 100%;
			justify-content: center;
			align-items: center;

			.dashicon {
				margin: auto;
			}
		}

		// Movers
		.editor-block-mover {
			margin-right: auto;

			.editor-block-mover__control:first-child {
				margin: 0;
				float: left;
			}
		}
	}
}

.editor-block-list .editor-inserter {
	margin: $item-spacing;

	.editor-inserter__toggle {
		color: $dark-gray-300;
		margin: 4px 0 0 -4px;	// align better with text blocks
	}

	.editor-inserter__toggle.components-icon-button:not(:disabled):hover {
		@include button-style__hover;
	}
}

.editor-block-list__insertion-point {
	position: relative;

	&:before {
		position: absolute;
		top: -1px;
		height: 2px;
		left: 0;
		right: 0;
		background: $blue-medium-500;
		content: '';
	}
}

.editor-block-list__block .editor-block-list__block-html-textarea {
	display: block;
	margin: 0;
	width: 100%;
	border: none;
	outline: none;
	box-shadow: none;
	resize: none;
	overflow: hidden;
	font-family: $editor-html-font;
	font-size: $text-editor-font-size;
	line-height: 150%;
	transition: padding .2s linear;

	&:focus {
		box-shadow: none;
	}
}

.editor-block-list__sibling-inserter {
	z-index: z-index( '.editor-block-list__sibling-inserter' );
	position: relative;
	max-width: $visual-editor-max-width + ( 2 * $block-mover-padding-visible ) - ( 2 * $block-padding );
	margin: 0 auto;

	@include break-small {
		max-width: $visual-editor-max-width - ( 2 * $block-padding );
	}

	&:not( [data-insert-index="0"] ) {
		top: #{ -1 * ( $block-spacing / 2 ) };
	}

	&:before {
		content: '';
		position: absolute;
		left: 0;
		width: 100%;
		height: 44px;
		transition: 0.1s height;
		transform: translateY( -50% );
	}

	&:hover:before {
		height: 44px;
	}

	.editor-inserter {
		position: absolute;
		top: 50%;
		left: 50%;
		transform: translate( -50%, -50% );
		margin: 0;
	}

	.editor-inserter__toggle {
		opacity: 0;
		transition: opacity 0.25s ease-in-out;

		&:not( :focus ) {
			transition-delay: 0.3s;
		}
	}

	&.is-forced-visible .editor-inserter__toggle,
	&:hover .editor-inserter__toggle,
	.editor-inserter__toggle:focus {
		opacity: 1;
	}

	.editor-inserter__toggle.components-button {
		margin: 0;
		padding: 4px;
		background: $white;

		&:focus {
			background: $light-gray-300;
		}

		.dashicon {
			vertical-align: bottom;
		}
	}
}

$sticky-bottom-offset: 20px;

.editor-block-contextual-toolbar {
	position: sticky;
	z-index: z-index( '.editor-block-contextual-toolbar' );
	margin-top: - $block-toolbar-height - $block-padding - 1px;
	margin-bottom: $block-padding + $sticky-bottom-offset;
	white-space: nowrap;
	text-align: left;
	pointer-events: none;
	height: $block-toolbar-height;

	// put toolbar snugly to edge on mobile
	margin-left: -$block-padding - 1px;	// stack borders
	margin-right: -$block-padding - 1px;
	@include break-small() {
		margin-left: auto;
		margin-right: auto;
	}

	// on mobile, toolbars fix differently
	top: $header-height - 1px; // stack borders
	@include break-small() {
		top: -1px;	// stack borders
	}

	.editor-block-toolbar {
		border: 1px solid $light-gray-500;
		width: 100%;

		// remove stacked borders in inline toolbar
		> div:first-child {
			margin-left: -1px;
		}

		> .editor-block-switcher:first-child {
			margin-left: -2px;
		}

		@include break-small() {
			width: auto;
		}
	}

	// Reset pointer-events on children.
	& > * {
		pointer-events: auto;
	}

	@include break-small() {
		margin-left: - $block-padding - 1px;
		margin-right: - $block-padding - 1px;
	}
}

.editor-block-contextual-toolbar + div {
	// prevent collapsing margins between block and toolbar, matches the 20px bottom offset		 +		display: flex;
	margin-top: - $sticky-bottom-offset - 1px;
	padding-top: 2px;
}