@import '../../variables.less';
@import 'mediawiki.mixins.less';
@import './layout.less';
@import 'legacy/Sidebar.less';
@import 'checkboxHack.less';

.mw-sidebar-action {
	// Align with the portal heading/links
	// `.portal` + `.portal .body`
	margin: 8px @margin-end-portal 8px @margin-start-portal + @margin-start-portal-body;
}

.mw-sidebar-action-link {
	font-size: @font-size-portal-list-item;
	font-weight: bold;
}

// FIXME please add a class, .mw-navigation, and use that here and below instead of this identifier.
#mw-navigation {
	.mw-checkbox-hack-checkbox,
	.mw-checkbox-hack-button {
		// The icon is only 44px tall but the header is 50px. Offset by the difference from the logo
		// icon and center with respect to the header.
		top: @margin-top-header + ( ( @height-logo-icon - @size-sidebar-button ) / 2 );
		// FIXME: Replace by proper calculation and variable.
		left: 14px;
	}

	.mw-checkbox-hack-button {
		position: absolute;
		z-index: @z-index-sidebar-button;
		// Override minimum dimensions set by mw-ui-icon.mw-ui-icon-element.
		min-width: @size-sidebar-button;
		min-height: @size-sidebar-button;
		width: @size-sidebar-button;
		height: @size-sidebar-button;
		border: 1px solid transparent;
		border-radius: @border-radius-base;

		&:before {
			// FIXME: the icon itself is supposed to be 20px. mediawiki.ui uses 24px.
			// As soon as mediawiki.ui is standardized, remove this override. See T191021.
			min-width: 20px;
			min-height: 20px;
			height: 100%;
			// Center it horizontally.
			margin: 0 12px;
			// Equals `#555`, closest to `#54595d` on background-color `#fff`.
			opacity: 0.67;
		}

		&:hover {
			background-color: @background-color-frameless--hover;

			&:before {
				opacity: 1;
			}
		}
	}

	.mw-checkbox-hack-checkbox:focus ~ .mw-checkbox-hack-button {
		// Next two rules from OOUI, frameless, icon-only button widget.
		border-color: @color-primary;
		.box-shadow( inset 0 0 0 1px @color-primary );
	}

	// Use the MediaWiki checkbox hack class from checkboxHack.less. This class exists on the
	// checkbox input for the menu panel.
	.mw-checkbox-hack-checkbox:not( :checked ) ~ .mw-sidebar {
		// Turn off presentation so that screen readers get the same effect as visually hiding.
		// Visibility and opacity can be animated. If animation is unnecessary, use `display: none`
		// instead to avoid hidden rendering.
		visibility: hidden;
		opacity: 0;
		.transform( translateX( -100% ) );
	}
}

// Disable transitions on page load. No-JS users will unfortunately miss out. A similar pattern is
// used in Minerva's DropDownList. See enableCssAnimations() in skin.vector.js/index.js for context
// and additional details on how this class is added.
.vector-animations-ready {
	// Enable sidebar transitions on desktop width only.
	.mw-sidebar {
		@media ( min-width: @width-breakpoint-desktop  ) {
			@timing: @transition-duration-base ease-out;
			.transition( transform @timing, opacity @timing, visibility @timing; );
		}
	}

	// Enable sidebar button transitions.
	#mw-navigation .mw-checkbox-hack-button {
		.transition(
			background-color @transition-duration-base,
			border-color @transition-duration-base,
			box-shadow @transition-duration-base;
		);
	}
}