Apply theme to 5.3.8

scss/mixins/_alert.scss

@@ -1,15 +1,18 @@
+@include deprecate("`alert-variant()`", "v5.3.0", "v6.0.0");
+
 // scss-docs-start alert-variant-mixin
 @mixin alert-variant($background, $border, $color) {
   --#{$prefix}alert-color: #{$color};
   --#{$prefix}alert-bg: #{$background};
   --#{$prefix}alert-border-color: #{$border};
+  --#{$prefix}alert-link-color: #{shade-color($color, 10%)};
 
   @if $enable-gradients {
     background-image: var(--#{$prefix}gradient);
   }
 
   .alert-link {
-    color: shade-color($color, 10%);
+    color: var(--#{$prefix}alert-link-color);
   }
 }
 // scss-docs-end alert-variant-mixin

scss/mixins/_banner.scss

@@ -1,9 +1,7 @@
 @mixin bsBanner($file) {
   /*!
-   * Bootstrap #{$file} v5.2.3 (https://getbootstrap.com/)
-   * Copyright 2011-2022 The Bootstrap Authors
-   * Copyright 2011-2022 Twitter, Inc.
+   * Bootstrap #{$file} v5.3.8 (https://getbootstrap.com/)
+   * Copyright 2011-2025 The Bootstrap Authors
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
    */
 }
-

scss/mixins/_box-shadow.scss

@@ -1,17 +1,23 @@
 @mixin box-shadow($shadow...) {
   @if $enable-shadows {
     $result: ();
+    $has-single-value: false;
+    $single-value: null;
 
     @each $value in $shadow {
       @if $value != null {
-        $result: append($result, $value, "comma");
-      }
-      @if $value == none and length($shadow) > 1 {
-        @warn "The keyword 'none' must be used as a single argument.";
+        @if $value == none or $value == initial or $value == inherit or $value == unset {
+          $has-single-value: true;
+          $single-value: $value;
+        } @else {
+          $result: append($result, $value, "comma");
+        }
       }
     }
 
-    @if (length($result) > 0) {
+    @if $has-single-value {
+      box-shadow: $single-value;
+    } @else if (length($result) > 0) {
       box-shadow: $result;
     }
   }

scss/mixins/_caret.scss

@@ -1,44 +1,49 @@
 // scss-docs-start caret-mixins
-@mixin caret-down {
-  border-top: $caret-width solid;
-  border-right: $caret-width solid transparent;
+@mixin caret-down($width: $caret-width) {
+  border-top: $width solid;
+  border-right: $width solid transparent;
   border-bottom: 0;
-  border-left: $caret-width solid transparent;
+  border-left: $width solid transparent;
 }
 
-@mixin caret-up {
+@mixin caret-up($width: $caret-width) {
   border-top: 0;
-  border-right: $caret-width solid transparent;
-  border-bottom: $caret-width solid;
-  border-left: $caret-width solid transparent;
+  border-right: $width solid transparent;
+  border-bottom: $width solid;
+  border-left: $width solid transparent;
 }
 
-@mixin caret-end {
-  border-top: $caret-width solid transparent;
+@mixin caret-end($width: $caret-width) {
+  border-top: $width solid transparent;
   border-right: 0;
-  border-bottom: $caret-width solid transparent;
-  border-left: $caret-width solid;
+  border-bottom: $width solid transparent;
+  border-left: $width solid;
 }
 
-@mixin caret-start {
-  border-top: $caret-width solid transparent;
-  border-right: $caret-width solid;
-  border-bottom: $caret-width solid transparent;
+@mixin caret-start($width: $caret-width) {
+  border-top: $width solid transparent;
+  border-right: $width solid;
+  border-bottom: $width solid transparent;
 }
 
-@mixin caret($direction: down) {
+@mixin caret(
+  $direction: down,
+  $width: $caret-width,
+  $spacing: $caret-spacing,
+  $vertical-align: $caret-vertical-align
+) {
   @if $enable-caret {
     &::after {
       display: inline-block;
-      margin-left: $caret-spacing;
-      vertical-align: $caret-vertical-align;
+      margin-left: $spacing;
+      vertical-align: $vertical-align;
       content: "";
       @if $direction == down {
-        @include caret-down();
+        @include caret-down($width);
       } @else if $direction == up {
-        @include caret-up();
+        @include caret-up($width);
       } @else if $direction == end {
-        @include caret-end();
+        @include caret-end($width);
       }
     }
 
@@ -49,10 +54,10 @@
 
       &::before {
         display: inline-block;
-        margin-right: $caret-spacing;
-        vertical-align: $caret-vertical-align;
+        margin-right: $spacing;
+        vertical-align: $vertical-align;
         content: "";
-        @include caret-start();
+        @include caret-start($width);
       }
     }
 

scss/mixins/_color-mode.scss

@@ -0,0 +1,21 @@
+// scss-docs-start color-mode-mixin
+@mixin color-mode($mode: light, $root: false) {
+  @if $color-mode-type == "media-query" {
+    @if $root == true {
+      @media (prefers-color-scheme: $mode) {
+        :root {
+          @content;
+        }
+      }
+    } @else {
+      @media (prefers-color-scheme: $mode) {
+        @content;
+      }
+    }
+  } @else {
+    [data-bs-theme="#{$mode}"] {
+      @content;
+    }
+  }
+}
+// scss-docs-end color-mode-mixin

scss/mixins/_forms.scss

@@ -21,7 +21,8 @@
   $icon,
   $tooltip-color: color-contrast($color),
   $tooltip-bg-color: rgba($color, $form-feedback-tooltip-opacity),
-  $focus-box-shadow: 0 0 $input-btn-focus-blur $input-focus-width rgba($color, $input-btn-focus-color-opacity)
+  $focus-box-shadow: 0 0 $input-btn-focus-blur $input-focus-width rgba($color, $input-btn-focus-color-opacity),
+  $border-color: $color
 ) {
   .#{$state}-feedback {
     display: none;
@@ -56,7 +57,7 @@
 
   .form-control {
     @include form-validation-state-selector($state) {
-      border-color: $color;
+      border-color: $border-color;
 
       @if $enable-validation-icons {
         padding-right: $input-height-inner;
@@ -67,8 +68,13 @@
       }
 
       &:focus {
-        border-color: $color;
-        box-shadow: $focus-box-shadow;
+        border-color: $border-color;
+        @if $enable-shadows {
+          @include box-shadow($input-box-shadow, $focus-box-shadow);
+        } @else {
+          // Avoid using mixin so we can pass custom focus shadow properly
+          box-shadow: $focus-box-shadow;
+        }
       }
     }
   }
@@ -85,21 +91,26 @@
 
   .form-select {
     @include form-validation-state-selector($state) {
-      border-color: $color;
+      border-color: $border-color;
 
       @if $enable-validation-icons {
         &:not([multiple]):not([size]),
         &:not([multiple])[size="1"] {
+          --#{$prefix}form-select-bg-icon: #{escape-svg($icon)};
           padding-right: $form-select-feedback-icon-padding-end;
-          background-image: escape-svg($form-select-indicator), escape-svg($icon);
           background-position: $form-select-bg-position, $form-select-feedback-icon-position;
           background-size: $form-select-bg-size, $form-select-feedback-icon-size;
         }
       }
 
       &:focus {
-        border-color: $color;
-        box-shadow: $focus-box-shadow;
+        border-color: $border-color;
+        @if $enable-shadows {
+          @include box-shadow($form-select-box-shadow, $focus-box-shadow);
+        } @else {
+          // Avoid using mixin so we can pass custom focus shadow properly
+          box-shadow: $focus-box-shadow;
+        }
       }
     }
   }
@@ -114,7 +125,7 @@
 
   .form-check-input {
     @include form-validation-state-selector($state) {
-      border-color: $color;
+      border-color: $border-color;
 
       &:checked {
         background-color: $color;

scss/mixins/_grid.scss

@@ -56,7 +56,7 @@
 @mixin row-cols($count) {
   > * {
     flex: 0 0 auto;
-    width: divide(100%, $count);
+    width: percentage(divide(1, $count));
   }
 }
 
@@ -72,7 +72,7 @@
     @include media-breakpoint-up($breakpoint, $breakpoints) {
       // Provide basic `.col-{bp}` classes for equal-width flexbox columns
       .col#{$infix} {
-        flex: 1 0 0%; // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
+        flex: 1 0 0;
       }
 
       .row-cols#{$infix}-auto > * {
@@ -138,7 +138,7 @@
           }
         }
 
-        // Start with `1` because `0` is and invalid value.
+        // Start with `1` because `0` is an invalid value.
         // Ends with `$columns - 1` because offsetting by the width of an entire row isn't possible.
         @for $i from 1 through ($columns - 1) {
           .g-start#{$infix}-#{$i} {

scss/mixins/_list-group.scss

@@ -1,3 +1,5 @@
+@include deprecate("`list-group-item-variant()`", "v5.3.0", "v6.0.0");
+
 // List Groups
 
 // scss-docs-start list-group-mixin

scss/mixins/_utilities.scss

@@ -1,6 +1,6 @@
 // Utility generator
 // Used to generate utilities & print utilities
-@mixin generate-utility($utility, $infix, $is-rfs-media-query: false) {
+@mixin generate-utility($utility, $infix: "", $is-rfs-media-query: false) {
   $values: map-get($utility, values);
 
   // If the values are a list or string, convert it into a map

scss/mixins/_visually-hidden.scss

@@ -6,7 +6,6 @@
 // See: https://kittygiraudel.com/2016/10/13/css-hide-and-seek/
 
 @mixin visually-hidden() {
-  position: absolute !important;
   width: 1px !important;
   height: 1px !important;
   padding: 0 !important;
@@ -15,12 +14,22 @@
   clip: rect(0, 0, 0, 0) !important;
   white-space: nowrap !important;
   border: 0 !important;
+
+  // Fix for positioned table caption that could become anonymous cells
+  &:not(caption) {
+    position: absolute !important;
+  }
+
+  // Fix to prevent overflowing children to become focusable
+  * {
+    overflow: hidden !important;
+  }
 }
 
 // Use to only display content when it's focused, or one of its child elements is focused
 // (i.e. when focus is within the element/container that the class was applied to)
 //
-// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
+// Useful for "Skip to main content" links; see https://www.w3.org/WAI/WCAG22/Techniques/general/G1.html
 
 @mixin visually-hidden-focusable() {
   &:not(:focus):not(:focus-within) {