/**
 * Less mixins.
 */
@import 'mediawiki.mixins.less';

.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;
}

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

	&::after {
		content: '';
		background: url( ../skins.vector.styles/images/arrow-down.svg ) 100% 50% no-repeat;
		width: unit( 12 / @font-size-browser, rem );
		height: unit( 12 / @font-size-browser, rem );
		// https://phabricator.wikimedia.org/T319070#8284272
		margin-left: 7px;

		html.skin-theme-clientpref-night & {
			// For night-mode, invert icons so they go from black to white.
			// Since invert( 1 ) changes the hue (e.g. from blue to orange)
			// hue-rotate( 180deg ) changes the hue back to that of the original color.
			// This slightly corrects progressive/destructive colored icons
			// (although their lightness & saturation are still different, e.g. language button).
			filter: invert( 1 ) hue-rotate( 180deg );
		}

		/**
		* Auto night mode.
		*
		* Applies the night mode color palette only in response to system settings.
		*/
		@media ( prefers-color-scheme: dark ) {
			html.skin-theme-clientpref-os & {
				filter: invert( 1 ) hue-rotate( 180deg );
			}
		}
	}
}

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

.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;
}

// Base links without a visited state
.mixin-vector-unvisited-link-base() {
	&:visited {
		color: @color-progressive;
	}

	&:visited:hover {
		color: @color-progressive--hover;
	}
}

// Red links without a visited state
.mixin-vector-unvisited-link-red() {
	&:visited {
		color: @color-link-red;
	}

	&:visited:hover {
		color: @color-link-red--hover;
	}
}

// Used for "selected" links inside tabs and dropdowns
.mixin-vector-selected-link() {
	// Override all link states to style it as text
	color: @color-base !important; /* stylelint-disable-line declaration-no-important */
}

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

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

	&:not( .mw-selflink ) {
		.mixin-vector-unvisited-link-base();
	}

	&.selected a {
		.mixin-vector-selected-link();
	}
}

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

	&::after {
		content: '';
		display: block;
		position: sticky;
		bottom: 0;
		left: 0;
		right: 0;
		height: @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() {
	left: auto;
	right: 0;
}