@import 'mediawiki.skin.variables.less';

//
// == Media query breakpoints ==
//
@min-width-mobile: @width-breakpoint-mobile; // Above 320px
@max-width-mobile: @width-breakpoint-tablet - 1px; // Below 719px
@min-width-tablet: @width-breakpoint-tablet; // Above 720px
@max-width-tablet: @width-breakpoint-desktop - 1px; // Below 999px
@min-width-desktop: @width-breakpoint-desktop; // Above 1000px
@max-width-desktop: @width-breakpoint-desktop-wide - 1px; // Below 1199px
@min-width-desktop-wide: @width-breakpoint-desktop-wide; // Above 1200px

// 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 );

// Sizing calculation primitives.
@font-size-root: 100%;
@font-size-browser: 16; // Assumed browser default of `16px`

//
// == Page content ==
//

@color-link-selected: @color-base;

@outline-color-base--focus: @color-progressive;

//
// == Typography ==
//
// Typography in Wikimedia Design Style Guide:;
// https://design.wikimedia.org/style-guide/visual-style_typography.html
// Historic overview and background information of fonts in Wikimedia software:
// https://www.mediawiki.org/wiki/Wikimedia_User_Interface/Use_cases/Font_family_stack
// Source of this font stack definition in WikimediaUI Base:
// https://phabricator.wikimedia.org/source/wikimedia-ui-base/browse/master/wikimedia-ui-base.less$202
@font-family-serif: 'Linux Libertine', 'Georgia', 'Times', serif;

// Body content uses the user setting in browser / operating system default sans-serif font:
// For example, Arial on Windows, Roboto on Android.
// FIXME: Use WikimediaUI Base's OS specific default sans-serif fonts.
// @font-family-sans is set in mediawiki.variables/variables.less

// Fallback for headings, language: ja,he,ko. See T73240, T65817, T65843, T65844, T65827.
@font-family-sans--fallback: sans-serif;

@font-size-base: unit( 14 / @font-size-browser, em ); // Equals `0.875em`.
@font-size-base--trident-hack: calc( 1em ~'*' unit( @font-size-base ) );
@font-size-reset: @font-size-root;
@font-size-heading-1: 1.8em;
@font-size-heading-2: 1.5em;
@font-size-heading-3: 1.2em;
@font-size-notification: 0.8em;
@font-size-site-notice: 0.8em;
@font-size-footer: unit( 12 / @font-size-browser, em );

@line-height-base: 1.6;
@line-height-heading: 1.375;
@line-height-code: 1.3;
@line-height-footer-info: 1.4;
@line-height-footer-buttons: 2;

@size-icon: unit( 20 / @font-size-browser, em );

// FIXME: Use global variable since Echo and CentralNotice use this variable
@border-color-content: #a7d7f9;
// Due to darker background gradient, border needs to be darkened for aligned visual perception.
@border-color-content--tabs-inactive: darken( @border-color-content, 10% );
@border-color-portal-heading: #c8ccd1;
// Use `rgba()` notation for better Safari support, see T254489.
@border-start-blockquote: 4px @border-style-base #eaecf0;
@padding-top-content: 0.5em;
@padding-blockquote: 8px 32px;

@background-color-secondary--modern: #f8f9fa;
@background-color-page-container: @background-color-base;

// Navigation
@background-color-secondary: #f6f6f6;
// Navigation `line-height` has to be set in `em`s due to a rendering calculation issue.
@line-height-nav: 1.125em;

// Navigation: Personal tools
@background-position-nav-personal-icon: left unit( 4 / @font-size-browser / @font-size-nav-personal, em );
@background-size-nav-personal-icon: unit( 14 / @font-size-browser / @font-size-nav-personal, em );
@top-personal-tools: 6px;
@font-size-nav-personal: 0.75em;
// Using `unit()` without second parameter to achieve a unitless output for `line-height`.
@line-height-nav-personal: unit( 14 / @font-size-browser / @font-size-nav-personal ); // Equals `1.667`.

// Tabs
@font-size-tabs: unit( 13 / @font-size-browser, em ); // Equals `0.8125em`.
@padding-horizontal-tabs: 8px;
@padding-top-tabs: 12px;
@padding-vertical-tabs: @padding-top-tabs 0 7px 0;

// Content boxes
@border-radius-content-box: 4px;
@border-color-content-box: @background-color-interactive;
// Content padding
@padding-vertical-content-box: @spacing-150;
@padding-horizontal-content-box: @spacing-150;
// content box changes *horizontal* padding at wide resolutions
@padding-horizontal-content-box-wide: @spacing-300;
// Content box shadow
@box-shadow-content-box:  @box-shadow-drop-medium;

// Dropdowns & menus
@height-dropdown-menu-item: unit( 32 / @font-size-browser, rem );
@padding-horizontal-dropdown-menu: 20px;
@padding-vertical-dropdown-menu: 20px;
@padding-vertical-dropdown-menu-item: 6px;
@font-size-dropdown: unit( @font-size-base, rem ); // Equals `0.875rem`.

// Scroll Indicator
@height-scroll-indicator: 30px;
// The amount of space that should be between the bottom of the viewport and the
// bottom of the scroll indicator.
@max-height-bottom-spacing-scroll-indicator: 16px;

// TOC and Page tools Pinned elements
@padding-top-pinned-element: unit( (30px - @padding-top-tabs) / @font-size-browser, em);

// TOC
@size-toc-subsection-toggle-icon: 1.834em;

// Search
@max-width-search: unit( 500px / @font-size-browser / @font-size-base, em ); // 35.71428571em @ 16 & 0.875em T270202
@min-width-search-button: 28px;
@width-search-button: unit( 28 / @font-size-browser / @font-size-search-input, em );
@font-size-search-input: unit( 13 / @font-size-browser, em ); // Equals `0.8125em`.
// Derived from @size-typeahead-search-focus-addition in Codex
// https://gerrit.wikimedia.org/r/plugins/gitiles/design/codex/+/refs/tags/v0.1.0-alpha.8/packages/codex/src/components/typeahead-search/TypeaheadSearch.vue#703
@size-search-expand: 24px;
@margin-end-search: 12px;

// Language button
@height-button-lang: unit( 32 / @font-size-browser, em );

// Pre-content
@margin-top-pre-content: 8px;

// Header
// T245190 T296321 For sticky header, set an explicit height. This is needed for scroll padding
// and for other sticky elements on the page. Setting the height in relative units enables
// the header's height to adapt to the browser's font size setting. Because
// this variable is used to determine top offsets for sticky elements where the
// font-size might not be 16px, using rem avoids the cascading effects of em units.
@height-header: unit( 50px / @font-size-browser, rem );

// Z-indices
// See skinStyles/jquery.ui/jquery.ui.datepicker.css.
// @z-index-ui-datepicker-cover: -1;
@z-index-base: 0;
// Header z-index-header higher than z-index-menu so that search results overlay variants and more menu
@z-index-header: 4;
@z-index-menu-checkbox: 1;
@z-index-search-button: 1;
@z-index-search-loader: 1;
// Ensure that this is displayed on top of .vector-body and clickable.
@z-index-indicators: 1;
// See skinStyles/jquery.ui/jquery.ui.slider.css.
// @z-index-ui-slider-range: 1;
// Menus must overlap indicators (@z-index-indicators) and VisualEditor toolbar (z-index: 2).
@z-index-menu: 3;
// See skinStyles/jquery.ui/jquery.ui.slider.css.
// @z-index-ui-slider-handle: 2;
// Display on top of page tabs (T39158, T50078).
@z-index-personal: 100;
// See skinStyles/jquery.ui/jquery.ui.selectable.css.
// @z-index-ui-selectable-helper: 100;
@z-index-overlay: 101;
// See skinStyles/jquery.ui/jquery.ui.tooltip.css.
// @z-index-ui-tooltip: 9999;

// Transitions
// Sticky header hide/show transition
@transition-sticky-header: transform 250ms linear;

//
// Layout
//
@max-width-page-container: unit( 1596px / @font-size-browser, em ); // T305069 - 99.75em @ 16
@max-width-content-container: unit( 1040px / @font-size-browser, rem ); // T335155
@padding-horizontal-page-container: unit( 24px / @font-size-browser, rem );
@padding-horizontal-page-container-desktop: unit( 44px / @font-size-browser, rem );
@padding-horizontal-page-container-desktop-wide: unit( 52px / @font-size-browser, rem );
// T314419 - Scroll padding is modified primarily to bring section headings into a position that is
// easier to read, which is slightly lower than the very top of the page. The primary use-case is when
// navigating sections via the table of contents. When changing this value, also change the value in
// resources/skins.vector.scripts/setupIntersectionObservers.js
@scroll-padding-top: 75px;

// Grid
@grid-row-gap: 24px;
@grid-column-gap: 24px;
@width-column-desktop: unit( 196px / @font-size-browser, rem ); // Total width including gap is 232px
@width-column-desktop-wide: unit( 248px / @font-size-browser, rem ); // Total width including gap is 284px