// The use of mixins.buttons requires @font-size-base to be defined for this to work in Storybook
@import '../../common/variables.less';
@import 'mediawiki.mixins.less';

// TODO: `#p-lang-btn` Can be changed to `.mw-portlet-lang` when languages-in-header is the default.
#p-lang-btn {
	// FIXME [review whether margin-top is needed] center vertically in heading.
	margin-top: 2px;
	.box-sizing( border-box );
	height: @height-lang-button;

	.mw-ui-icon:before {
		// Put icon on correct standard normal state color.
		opacity: 0.87;
	}

	.vector-menu-heading {
		font-size: initial;
		// reset padding styles in MenuDropdown.less with right padding for arrow.
		padding-right: 30px;
		padding-left: 8px;
		// Prevent select of span text "X languages"
		user-select: none;
		// Remove opacity on language button (it applies to more menu because of label color).
		opacity: 1;

		// FIXME: `span:not` rule can be removed when cache has cleared.
		span:not( .mw-ui-icon ),
		.vector-menu-heading-label {
			// Special treatment for language button, based on Vector font-size
			font-size: @font-size-base;
		}

		&:after {
			top: 0;
		}

		// T291286: Temporarily use progressive ULS style
		&.mw-ui-progressive.mw-ui-quiet {
			.mw-ui-icon:before {
				// Ensure inverted language icon is white
				opacity: 1;
			}

			&:after {
				// Invert arrow color
				background-image: url( ../common/images/arrow-down-progressive.svg );
				opacity: 1;
			}
		}
	}

	input:active + .vector-menu-heading {
		&.mw-ui-progressive.mw-ui-quiet {
			.mw-ui-icon {
				filter: brightness( 0 ) invert( 1 );
			}

			&:after {
				background-image: url( ../common/images/arrow-down-invert.svg );
			}
		}
	}

	.vector-menu-content {
		top: auto;
		left: -@border-width-base;
		right: -@border-width-base;
		// align borders of open menu align with button
		.box-sizing( border-box );
		max-height: 65vh;
		overflow: auto;
		border-top-width: 1px;

		// Adds to the show/hide technique in MenuDropdown.less with
		// display to prevent rendering and long scrolling on Main page
		display: none;

		li a {
			font-size: inherit;
		}
	}

	.vector-menu-checkbox:checked ~ .vector-menu-content {
		display: block;
	}

	.after-portlet {
		// ensure there is a visual separation between the language links and additional links.
		margin-top: 10px;
	}
}

// Hides language button with CSS, ensures language button is in DOM for temporary JS hack for interwiki links
// Temporary solution to T287206, can be removed when ULS dialog includes interwiki links
#p-lang-btn.mw-portlet-empty {
	display: none;
}

#p-lang-btn-sticky-header {
	@button-padding: 12px;
	@arrow-width: 18px;
	position: relative;
	padding-right: calc( @button-padding + @arrow-width );
	white-space: nowrap;

	&:after {
		content: '';
		background-image: url( ../common/images/arrow-down.svg );
		background-position: 100% 50%;
		background-repeat: no-repeat;
		position: absolute;
		top: 0;
		right: @button-padding;
		bottom: 0;
		width: @arrow-width;
		// Modify the color of the image from the default #202122 to approx. #404244 to match the text.
		opacity: 0.84;
	}
}