/**
 * Vector modern layout styles for screen
 *
 * Layout rules divide the page into sections and how VectorComponents should be arranged in the skin.
 * The rules here should only define the layout, not color or typography.
 */

@import '../../common/variables.less';
@import 'mediawiki.mixins.less';

@selector-sidebar-no-toc-sidebar-closed: ~'#mw-sidebar-checkbox:not( :checked ) ~ .vector-sidebar-container-no-toc';

// Content container

// Note this uses variables defined in mediawiki.skin.variables so that VisualEditor can read them
// see T259331.
@padding-content: @padding-top-content @padding-horizontal-content 1.5em;

// Breakpoints

// Defines the minimum viewport width, at which point the layout will not get any
// smaller and will start horizontal scrolling instead.
@min-width-supported:
	unit( 500px / @font-size-browser, em ) -
	( 2 * @padding-horizontal-page-container-wide );
// 31.25em - 3.75em = 27.5em @ 16

body {
	background-color: @background-color-secondary--modern;
	color: @color-base;
	// Vertical scrollbar always visible.
	overflow-y: scroll;
}

.mw-body,
.parsoid-body {
	direction: ltr;
}

.mw-body {
	border-top: @border-width-base @border-style-base transparent;
	/* Merge the border with tabs' one (in their background image) */
	margin-top: -@border-width-base;
	padding: @padding-content;

	.firstHeading {
		/* Change the default from mediawiki.skinning CSS to let indicators float into heading area */
		overflow: visible;
		margin-bottom: 0;
	}
}

.mw-header {
	// allow z-index to apply so search results overlay article
	position: relative;
	z-index: @z-index-header;
}

.mw-body-content {
	margin-top: 16px;
}

/* Main column */
.mw-body,
#mw-data-after-content,
.mw-footer {
	margin-left: 0;
}

/* Content */
.mw-indicators {
	z-index: @z-index-indicators;
}

.mw-body-header {
	.mixin-clearfix();
}

.mw-body .mw-portlet-lang {
	float: right;
}

.vector-body {
	position: relative;
	z-index: @z-index-base;

	#siteSub {
		margin-top: 8px; // T311564
	}

	#contentSub,
	#contentSub2 {
		// T311564: Override core styles to apply margin-top rather than margin-bottom
		margin-top: 8px;
		margin-bottom: 0;
	}
}

#left-navigation {
	float: left;
	margin-left: -@padding-horizontal-tabs;
}

#right-navigation {
	float: right;
	margin-right: -@padding-horizontal-tabs;
	// Any dropdowns inside the right navigation in modern Vector (e.g. "more" menu).
	// should be right-aligned to prevent horizontal scrolling.
	.vector-menu-content {
		left: auto;
		right: -@border-width-base;
	}
}

.mw-table-of-contents-container {
	// stylelint-disable-next-line plugin/no-unsupported-browser-features
	position: sticky;
	top: 0;
	// Needed for Grid-based layout
	align-self: start;
}

.parsoid-body {
	padding: @padding-content;
}

.mw-footer {
	border-top: @border-base;
	padding: 0.75em;
}

// Container logic.
.mw-page-container {
	// Setting position and z-index is important as it allows overlays appended to the body tag
	// to position themselves over the Vector interface. This forms another stacking context for
	// elements placed inside this element
	position: relative;
	z-index: 0;
	max-width: @max-width-page-container;
	// Fill the viewport even if the content height is small. This also helps
	// mitigate a long sidebar overflowing the page container (T257518).
	min-height: 100%;
	margin-left: auto;
	margin-right: auto;
	// Use non-zero padding to disable margin collapse.
	// Be careful not to use overflow-y: scroll here (see T270146 and T271868)
	padding: 0.05px ( @padding-horizontal-page-container / 2 );
	background-color: @background-color-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;

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

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

.skin--responsive .mw-page-container {
	min-width: auto;
}

@import 'grid.less';