Replace deprecated Less `.box-shadow()` mixin with standard CSS

Also remove 'mediawiki.mixins' includes where unused.

Bug: T306488
Change-Id: Ie36ed1feb8382415a8017522404bb8f59437606b

14 files changed, 19 insertions, 27 deletions

diff --git a/resources/src/mediawiki.Upload.BookletLayout/mw.widgets.StashedFileWidget.less b/resources/src/mediawiki.Upload.BookletLayout/mw.widgets.StashedFileWidget.less
index 50a35c2673d1..0833379bb84e 100644
--- a/resources/src/mediawiki.Upload.BookletLayout/mw.widgets.StashedFileWidget.less
+++ b/resources/src/mediawiki.Upload.BookletLayout/mw.widgets.StashedFileWidget.less
@@ -1,5 +1,3 @@
-@import 'mediawiki.mixins.less';
-
 .mw-widgets-stashedFileWidget {
 	display: inline-block;
 	vertical-align: middle;
@@ -30,14 +28,14 @@
 	vertical-align: middle;
 	position: relative;
 	overflow: hidden;
-	.box-sizing( border-box );
+	box-sizing: border-box;
 
 	> .mw-widgets-stashedFileWidget-label {
 		line-height: 2.3em;
 		margin: 0;
 		overflow: hidden;
 		white-space: nowrap;
-		.box-sizing( border-box );
+		box-sizing: border-box;
 		text-overflow: ellipsis;
 		left: 0.5em;
 		right: 2.375em;
diff --git a/resources/src/mediawiki.less/mediawiki.ui/mixins.buttons.less b/resources/src/mediawiki.less/mediawiki.ui/mixins.buttons.less
index 96a6a4533307..91b641f91a68 100644
--- a/resources/src/mediawiki.less/mediawiki.ui/mixins.buttons.less
+++ b/resources/src/mediawiki.less/mediawiki.ui/mixins.buttons.less
@@ -9,7 +9,7 @@
 .mw-ui-button() {
 	// Container layout
 	display: inline-block;
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	margin: 0;
 	border: @border-base;
 	border-radius: @border-radius-base;
diff --git a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.mixins.less b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.mixins.less
index cfe7690c2f12..2c589393196f 100644
--- a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.mixins.less
+++ b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.mixins.less
@@ -6,7 +6,7 @@
 
 // Circle mixin
 .mw-rcfilters-circle( @min-size-diameter: @min-size-circle, @size-diameter: @size-circle, @margin: 0.5em ) {
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	min-width: @min-size-diameter;
 	width: @size-diameter;
 	min-height: @min-size-diameter;
diff --git a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.FilterTagMultiselectWidget.less b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.FilterTagMultiselectWidget.less
index c7444911d3da..1ad6a34b8976 100644
--- a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.FilterTagMultiselectWidget.less
+++ b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.FilterTagMultiselectWidget.less
@@ -134,7 +134,7 @@
 		&-select {
 			&-widget.oo-ui-widget {
 				display: block;
-				.box-sizing( border-box );
+				box-sizing: border-box;
 				height: 2.5em;
 				border: @border-base;
 				border-left-width: 0;
diff --git a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.ItemMenuOptionWidget.less b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.ItemMenuOptionWidget.less
index ea177c707e4b..0428a4c72bf5 100644
--- a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.ItemMenuOptionWidget.less
+++ b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.ui.ItemMenuOptionWidget.less
@@ -4,7 +4,7 @@
 
 .mw-rcfilters-ui-itemMenuOptionWidget {
 	padding: 0 0.5em;
-	.box-sizing( border-box );
+	box-sizing: border-box;
 
 	&:not( :last-child ):not( .mw-rcfilters-ui-itemMenuOptionWidget-identifier-talk ) {
 		border-bottom: 1px solid @colorGray14;
diff --git a/resources/src/mediawiki.skinning/elements.less b/resources/src/mediawiki.skinning/elements.less
index 59f2869a8ddd..ba64437faa32 100644
--- a/resources/src/mediawiki.skinning/elements.less
+++ b/resources/src/mediawiki.skinning/elements.less
@@ -10,7 +10,6 @@
  * This style sheet is used by the Monobook and Vector skins.
  */
 
-@import 'mediawiki.mixins';
 @import 'mediawiki.skin.variables.less';
 
 /* stylelint-disable selector-class-pattern */
@@ -210,7 +209,7 @@ form {
 
 textarea {
 	display: block;
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	width: 100%;
 	/* Support: Firefox */
 	/* Border rule required to override system appearance on Linux. T13641. */
diff --git a/resources/src/mediawiki.special.search.interwikiwidget.styles.less b/resources/src/mediawiki.special.search.interwikiwidget.styles.less
index bef0b3bae202..0f207107e978 100644
--- a/resources/src/mediawiki.special.search.interwikiwidget.styles.less
+++ b/resources/src/mediawiki.special.search.interwikiwidget.styles.less
@@ -2,7 +2,6 @@
 /* ======================== */
 
 @import 'mediawiki.ui/variables.less';
-@import 'mediawiki.mixins.less';
 
 /* stylelint-disable selector-class-pattern */
 
@@ -17,7 +16,7 @@
 	}
 
 	.iw-resultset {
-		.box-sizing(border-box);
+		box-sizing: border-box;
 		padding: 0.5em;
 		vertical-align: top;
 		width: 100%;
@@ -62,7 +61,7 @@
 		float: left;
 		width: 100%;
 		height: 200px;
-		.box-sizing(border-box);
+		box-sizing: border-box;
 		/* stylelint-disable-next-line unit-disallowed-list */
 		padding: 0.25rem;
 	}
diff --git a/resources/src/mediawiki.special/comparepages.less b/resources/src/mediawiki.special/comparepages.less
index e00f47ebe1ec..ec10192d290d 100644
--- a/resources/src/mediawiki.special/comparepages.less
+++ b/resources/src/mediawiki.special/comparepages.less
@@ -1,7 +1,6 @@
 /*!
  * Styles for Special:ComparePages
  */
-@import 'mediawiki.mixins.less';
 
 .mw-special-ComparePages {
 	.mw-htmlform-ooui-wrapper {
@@ -11,7 +10,7 @@
 	.oo-ui-layout.oo-ui-panelLayout.oo-ui-panelLayout-padded.oo-ui-panelLayout-framed {
 		float: left;
 		width: 49%;
-		.box-sizing( border-box );
+		box-sizing: border-box;
 
 		& + .oo-ui-layout.oo-ui-panelLayout.oo-ui-panelLayout-padded.oo-ui-panelLayout-framed {
 			margin-left: 2%;
diff --git a/resources/src/mediawiki.ui.checkbox/checkbox.less b/resources/src/mediawiki.ui.checkbox/checkbox.less
index 79de87d68766..1215ffbcc97e 100644
--- a/resources/src/mediawiki.ui.checkbox/checkbox.less
+++ b/resources/src/mediawiki.ui.checkbox/checkbox.less
@@ -64,7 +64,7 @@
 			background-position: center center;
 			background-repeat: no-repeat;
 			background-size: 0 0;
-			.box-sizing( border-box );
+			box-sizing: border-box;
 			position: absolute;
 			// Ensure alignment of checkbox to middle of the text in long labels, see T85241
 			top: 50%;
diff --git a/resources/src/mediawiki.ui.input/input.less b/resources/src/mediawiki.ui.input/input.less
index 20a250c0b291..4e191881a630 100644
--- a/resources/src/mediawiki.ui.input/input.less
+++ b/resources/src/mediawiki.ui.input/input.less
@@ -19,7 +19,7 @@
 .mw-ui-input {
 	background-color: @background-color-base;
 	color: @color-base--emphasized;
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	display: block;
 	width: 100%;
 	border: @border-base;
diff --git a/resources/src/mediawiki.ui.radio/radio.less b/resources/src/mediawiki.ui.radio/radio.less
index d2318063c436..2b3737d41a09 100644
--- a/resources/src/mediawiki.ui.radio/radio.less
+++ b/resources/src/mediawiki.ui.radio/radio.less
@@ -60,7 +60,7 @@
 			&:before {
 				content: '';
 				background-color: #fff;
-				.box-sizing( border-box );
+				box-sizing: border-box;
 				position: absolute;
 				left: 0;
 				width: @size-input-binary;
diff --git a/resources/src/mediawiki.ui/forms.less b/resources/src/mediawiki.ui/forms.less
index 1e8ecb2bcb15..0f627dbde6a0 100644
--- a/resources/src/mediawiki.ui/forms.less
+++ b/resources/src/mediawiki.ui/forms.less
@@ -1,6 +1,5 @@
 // Form elements and layouts
 
-@import 'mediawiki.mixins.less';
 @import 'mediawiki.ui/variables.less';
 
 /* stylelint-disable selector-class-pattern */
@@ -33,7 +32,7 @@
 //   </div>
 // </form>
 .mw-ui-vform {
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	width: @defaultFormWidth;
 
 	// MW currently doesn't use the type attribute everywhere on inputs.
@@ -46,7 +45,7 @@
 	// Give dropdown lists the same spacing as input fields for consistency.
 	// Values taken from .agora-field-styling() in mixins/form.less
 	select {
-		.box-sizing( border-box );
+		box-sizing: border-box;
 		padding: 0.35em 0.5em;
 		vertical-align: middle;
 	}
@@ -54,7 +53,7 @@
 	> label {
 		display: block;
 		color: @color-base;
-		.box-sizing( border-box );
+		box-sizing: border-box;
 		width: auto;
 		margin: 0 0 0.2em;
 		padding: 0;
@@ -68,7 +67,7 @@
 	// Override input styling just for checkboxes and radio inputs.
 	input[ type='radio' ] {
 		display: inline;
-		.box-sizing( content-box );
+		box-sizing: content-box;
 		width: auto;
 	}
 
diff --git a/resources/src/mediawiki.widgets/mw.widgets.CalendarWidget.less b/resources/src/mediawiki.widgets/mw.widgets.CalendarWidget.less
index caeea4750c7f..08b851fb930b 100644
--- a/resources/src/mediawiki.widgets/mw.widgets.CalendarWidget.less
+++ b/resources/src/mediawiki.widgets/mw.widgets.CalendarWidget.less
@@ -236,7 +236,7 @@
 
 /* Theme-specific */
 .mw-widget-calendarWidget {
-	.box-sizing( border-box );
+	box-sizing: border-box;
 	border: 1px solid #a2a9b1;
 	.transition( ~'border-color 100ms, box-shadow 100ms' );
 
diff --git a/resources/src/mediawiki.widgets/mw.widgets.TitleWidget.less b/resources/src/mediawiki.widgets/mw.widgets.TitleWidget.less
index 338b1dc4cb1c..dababab39923 100644
--- a/resources/src/mediawiki.widgets/mw.widgets.TitleWidget.less
+++ b/resources/src/mediawiki.widgets/mw.widgets.TitleWidget.less
@@ -4,8 +4,6 @@
  * @copyright 2011-2015 MediaWiki Widgets Team and others; see AUTHORS.txt
  * @license The MIT License (MIT); see LICENSE.txt
  */
-@import 'mediawiki.mixins.less';
-
 .mw-widget-titleWidget-menu {
 	.mw-widget-titleOptionWidget {
 		line-height: normal;
@@ -17,7 +15,7 @@
 
 	&-withImages {
 		.mw-widget-titleOptionWidget {
-			.box-sizing( border-box );
+			box-sizing: border-box;
 			min-height: 3.75em;
 			padding-left: 4.75em;
 			padding-top: 0.5em;