/**
 * Less mixins.
 */

.mixin-vector-page-container-sizing() {
	// Set a min-width to make explicit we do not support anything below this threshold.
	// For devices too small, they should be more useable with horizontal scrolling.
	// e.g. Portrait on an iPad
	min-width: @min-width-supported;
	max-width: @max-width-page-container;
	padding-left: @padding-horizontal-page-container;
	padding-right: @padding-horizontal-page-container;
	box-sizing: border-box;
}

// Defines the arrow beside dropdown headings.
.mixin-vector-legacy-menu-heading-arrow {
	content: '';
	background: url( ../common/images/arrow-down.svg ) 100% 50% no-repeat;
	width: unit( 16 / @font-size-tabs / @font-size-browser, em );
	height: unit( 16 / @font-size-tabs / @font-size-browser, em );
}

.mixin-vector-arrowed-dropdown-toggle() {
	display: inline-flex;
	align-items: center;

	&::after {
		content: '';
		background: url( ../common/images/arrow-down.svg ) 100% 50% no-repeat;
		width: unit( 16 / @font-size-tabs / @font-size-browser, em );
		height: unit( 16 / @font-size-tabs / @font-size-browser, em );
		// https://phabricator.wikimedia.org/T319070#8284272
		margin-left: -1px;
	}
}

.mixin-vector-content-box() {
	background-color: @background-color-base;
	border: @border-width-base @border-style-base @border-color-content-box;
	border-radius: @border-radius-content-box;
}

.mixin-vector-dropdown-menu() {
	.mixin-vector-content-box();
	padding: @padding-horizontal-dropdown-menu @padding-vertical-dropdown-menu;
	font-size: @font-size-dropdown;
	box-shadow: 0 2px 6px -1px rgba( 0, 0, 0, 0.2 );
	transition-property: opacity;
	transition-duration: @transition-duration-base;
	// TODO Add consistent min/max values for dropdowns in T316055
	width: max-content;
	max-width: 200px;
}

.mixin-vector-dropdown-menu-item() {
	display: flex;
	align-items: center;
	padding: @padding-vertical-dropdown-menu-item 0;

	&:not( .mw-selflink ):visited {
		color: @color-link;
	}

	.vector-icon {
		margin-right: @spacing-35;
	}

	&.selected a,
	&.selected a:visited {
		color: @color-link-selected;
	}
}

.mixin-page-container() {
	max-width: @max-width-page-container;
	// Set a min-width to make explicit we do not support anything below this threshold.
	// For devices too small, they should be more useable with horizontal scrolling.
	// e.g. Portrait on an iPad
	min-width: @min-width-supported;
	margin: 0 auto;
	padding-left: @padding-horizontal-page-container;
	padding-right: @padding-horizontal-page-container;
	background-color: @background-color-page-container;
	box-sizing: border-box;

	@media ( min-width: @min-width-desktop ) {
		padding-left: @padding-horizontal-page-container-desktop;
		padding-right: @padding-horizontal-page-container-desktop;
	}

	@media ( min-width: @min-width-desktop-wide ) {
		padding-left: @padding-horizontal-page-container-desktop-wide;
		padding-right: @padding-horizontal-page-container-desktop-wide;
	}
}

.mixin-vector-scrollable-with-fade() {
	overflow-y: auto;

	&::after {
		content: '';
		display: block;
		position: sticky;
		bottom: 0;
		left: 0;
		right: 0;
		width: ~'calc( 100% + @{padding-vertical-dropdown-menu} )';
		height: @padding-vertical-dropdown-menu;
		margin-top: -@padding-vertical-dropdown-menu;
		margin-left: -@padding-vertical-dropdown-menu;
		transform: translate( 0, @padding-vertical-dropdown-menu );
		background: linear-gradient( rgba( 255, 255, 255, 0 ), @background-color-page-container );
		background-repeat: no-repeat;
		pointer-events: none; // Make the link below the fade clickable
	}
}

.mixin-vector-dropdown-content-flip() {
	// Flip dropdown horizontal alignment
	left: auto;
	right: 0;
}