diff --git a/gulpfile.js b/gulpfile.js
index 0cc257d37..4fd2e65f9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -87,11 +87,11 @@ const scss = () => src(paths.src.scss + '/adminlte.scss', { sourcemaps: true })
     .pipe(browserSync.stream())
 
 // Compile SCSS Dark
-const scssDark = () => src(paths.src.scss + '/dark/adminlte-dark-addon.scss', { sourcemaps: true })
-    .pipe(sass(sassOptions).on('error', sass.logError))
-    .pipe(postcss(postcssOptions))
-    .pipe(dest(paths.temp.css + '/dark', { sourcemaps: '.' }))
-    .pipe(browserSync.stream())
+// const scssDark = () => src(paths.src.scss + '/dark/adminlte-dark-addon.scss', { sourcemaps: true })
+//     .pipe(sass(sassOptions).on('error', sass.logError))
+//     .pipe(postcss(postcssOptions))
+//     .pipe(dest(paths.temp.css + '/dark', { sourcemaps: '.' }))
+//     .pipe(browserSync.stream())
 
 // Lint TS
 function isFixed(file) {
@@ -158,7 +158,7 @@ const serve = () => {
 
   watch([paths.src.scss], series(lintScss))
   watch([paths.src.scss + '/**/*.scss', '!' + paths.src.scss + '/bootstrap-dark/**/*.scss', '!' + paths.src.scss + '/dark/**/*.scss'], series(scss))
-  watch([paths.src.scss + '/bootstrap-dark/', paths.src.scss + '/dark/'], series(scssDark))
+  watch([paths.src.scss + '/bootstrap-dark/', paths.src.scss + '/dark/'])
   watch([paths.src.ts], series(lintTs, tsCompile))
   watch([paths.src.html, paths.src.base + '*.html', paths.src.partials], series(html, index, lintHtml))
   watch([paths.src.assets], series(assets))
@@ -305,4 +305,4 @@ exports.compile = compile
 exports.production = series(lint, compile)
 
 // Default - Only for light mode AdminLTE
-exports.default = series(scss, scssDark, tsCompile, html, index, assets, serve)
+exports.default = series(scss, tsCompile, html, index, assets, serve)
diff --git a/src/scss/_bootstrap-variables.scss b/src/scss/_bootstrap-variables.scss
index 28a3be1e4..f61aa74cb 100644
--- a/src/scss/_bootstrap-variables.scss
+++ b/src/scss/_bootstrap-variables.scss
@@ -1,3 +1,4 @@
+// AdminLTE Custom Variables Changes.
 // Some of the variables are modified of Bootstrap Original Variables.
 // You can find modified variables easily by searching keyword "// adminlte-modified"
 
@@ -63,40 +64,13 @@ $colors: (
   "green":      $green,
   "teal":       $teal,
   "cyan":       $cyan,
+  "black":      $black,
   "white":      $white,
   "gray":       $gray-600,
   "gray-dark":  $gray-800
 ) !default;
 // scss-docs-end colors-map
 
-// scss-docs-start theme-color-variables
-$primary:       $blue !default;
-$secondary:     $gray-600 !default;
-$success:       $green !default;
-$info:          $cyan !default;
-$warning:       $yellow !default;
-$danger:        $red !default;
-$light:         $gray-100 !default;
-$dark:          $gray-900 !default;
-// scss-docs-end theme-color-variables
-
-// scss-docs-start theme-colors-map
-$theme-colors: (
-  "primary":    $primary,
-  "secondary":  $secondary,
-  "success":    $success,
-  "info":       $info,
-  "warning":    $warning,
-  "danger":     $danger,
-  "light":      $light,
-  "dark":       $dark
-) !default;
-// scss-docs-end theme-colors-map
-
-// scss-docs-start theme-colors-rgb
-$theme-colors-rgb: map-loop($theme-colors, to-rgb, "$value") !default;
-// scss-docs-end theme-colors-rgb
-
 // The contrast ratio to reach against white, to determine if color changes from "light" to "dark". Acceptable values for WCAG 2.0 are 3, 4.5 and 7.
 // See https://www.w3.org/TR/WCAG20/#visual-audio-contrast-contrast
 $min-contrast-ratio:   4.5 !default;
@@ -231,8 +205,8 @@ $indigos: (
 ) !default;
 
 $purples: (
-  "purple-100": $purple-200,
-  "purple-200": $purple-100,
+  "purple-100": $purple-100,
+  "purple-200": $purple-200,
   "purple-300": $purple-300,
   "purple-400": $purple-400,
   "purple-500": $purple-500,
@@ -327,6 +301,63 @@ $cyans: (
 ) !default;
 // fusv-enable
 
+// scss-docs-start theme-color-variables
+$primary:       $blue !default;
+$secondary:     $gray-600 !default;
+$success:       $green !default;
+$info:          $cyan !default;
+$warning:       $yellow !default;
+$danger:        $red !default;
+$light:         $gray-100 !default;
+$dark:          $gray-900 !default;
+// scss-docs-end theme-color-variables
+
+// scss-docs-start theme-colors-map
+$theme-colors: (
+  "primary":    $primary,
+  "secondary":  $secondary,
+  "success":    $success,
+  "info":       $info,
+  "warning":    $warning,
+  "danger":     $danger,
+  "light":      $light,
+  "dark":       $dark
+) !default;
+// scss-docs-end theme-colors-map
+
+// scss-docs-start theme-text-variables
+$primary-text-emphasis:   shade-color($primary, 60%) !default;
+$secondary-text-emphasis: shade-color($secondary, 60%) !default;
+$success-text-emphasis:   shade-color($success, 60%) !default;
+$info-text-emphasis:      shade-color($info, 60%) !default;
+$warning-text-emphasis:   shade-color($warning, 60%) !default;
+$danger-text-emphasis:    shade-color($danger, 60%) !default;
+$light-text-emphasis:     $gray-700 !default;
+$dark-text-emphasis:      $gray-700 !default;
+// scss-docs-end theme-text-variables
+
+// scss-docs-start theme-bg-subtle-variables
+$primary-bg-subtle:       tint-color($primary, 80%) !default;
+$secondary-bg-subtle:     tint-color($secondary, 80%) !default;
+$success-bg-subtle:       tint-color($success, 80%) !default;
+$info-bg-subtle:          tint-color($info, 80%) !default;
+$warning-bg-subtle:       tint-color($warning, 80%) !default;
+$danger-bg-subtle:        tint-color($danger, 80%) !default;
+$light-bg-subtle:         mix($gray-100, $white) !default;
+$dark-bg-subtle:          $gray-400 !default;
+// scss-docs-end theme-bg-subtle-variables
+
+// scss-docs-start theme-border-subtle-variables
+$primary-border-subtle:   tint-color($primary, 60%) !default;
+$secondary-border-subtle: tint-color($secondary, 60%) !default;
+$success-border-subtle:   tint-color($success, 60%) !default;
+$info-border-subtle:      tint-color($info, 60%) !default;
+$warning-border-subtle:   tint-color($warning, 60%) !default;
+$danger-border-subtle:    tint-color($danger, 60%) !default;
+$light-border-subtle:     $gray-200 !default;
+$dark-border-subtle:      $gray-500 !default;
+// scss-docs-end theme-border-subtle-variables
+
 // Characters which are escaped by the escape-svg function
 $escaped-characters: (
   ("<", "%3c"),
@@ -348,6 +379,7 @@ $enable-transitions:          true !default;
 $enable-reduced-motion:       true !default;
 $enable-smooth-scroll:        true !default;
 $enable-grid-classes:         true !default;
+$enable-container-classes:    true !default;
 $enable-cssgrid:              false !default;
 $enable-button-pointers:      true !default;
 $enable-rfs:                  true !default;
@@ -356,9 +388,13 @@ $enable-negative-margins:     false !default;
 $enable-deprecation-messages: true !default;
 $enable-important-utilities:  true !default;
 
+$enable-dark-mode:            true !default;
+$color-mode-type:             data !default; // `data` or `media-query`
+
 // Prefix for :root CSS variables
 
-$variable-prefix:             bs- !default;
+$variable-prefix:             bs- !default; // Deprecated in v5.2.0 for the shorter `$prefix`
+$prefix:                      $variable-prefix !default;
 
 // Gradient
 //
@@ -384,8 +420,6 @@ $spacers: (
   4: $spacer * 1.5,
   5: $spacer * 3,
 ) !default;
-
-$negative-spacers: if($enable-negative-margins, negativify-map($spacers), null) !default;
 // scss-docs-end spacer-variables-maps
 
 // Position
@@ -404,42 +438,17 @@ $position-values: (
 //
 // Settings for the `<body>` element.
 
-$body-bg:                   $white !default;
-$body-color:                $gray-900 !default;
 $body-text-align:           null !default;
+$body-color:                $gray-900 !default;
+$body-bg:                   $white !default;
 
-// Utilities maps
-//
-// Extends the default `$theme-colors` maps to help create our utilities.
+$body-secondary-color:      rgba($body-color, .75) !default;
+$body-secondary-bg:         $gray-200 !default;
 
-// Come v6, we'll de-dupe these variables. Until then, for backward compatibility, we keep them to reassign.
-// scss-docs-start utilities-colors
-$utilities-colors: $theme-colors-rgb !default;
-// scss-docs-end utilities-colors
+$body-tertiary-color:       rgba($body-color, .5) !default;
+$body-tertiary-bg:          $gray-100 !default;
 
-// scss-docs-start utilities-text-colors
-$utilities-text: map-merge(
-  $utilities-colors,
-  (
-    "black": to-rgb($black),
-    "white": to-rgb($white),
-    "body": to-rgb($body-color)
-  )
-) !default;
-$utilities-text-colors: map-loop($utilities-text, rgba-css-var, "$key", "text") !default;
-// scss-docs-end utilities-text-colors
-
-// scss-docs-start utilities-bg-colors
-$utilities-bg: map-merge(
-  $utilities-colors,
-  (
-    "black": to-rgb($black),
-    "white": to-rgb($white),
-    "body": to-rgb($body-bg)
-  )
-) !default;
-$utilities-bg-colors: map-loop($utilities-bg, rgba-css-var, "$key", "bg") !default;
-// scss-docs-end utilities-bg-colors
+$body-emphasis-color:       $black !default;
 
 // Links
 //
@@ -506,11 +515,9 @@ $grid-columns:                12 !default;
 $grid-gutter-width:           1.5rem !default;
 $grid-row-columns:            6 !default;
 
-$gutters: $spacers !default;
-
 // Container padding
 
-$container-padding-x: $grid-gutter-width * .5 !default;
+$container-padding-x: $grid-gutter-width !default;
 
 
 // Components
@@ -526,16 +533,22 @@ $border-widths: (
   4: 4px,
   5: 5px
 ) !default;
-
+$border-style:                solid !default;
 $border-color:                $gray-300 !default;
+$border-color-translucent:    rgba($black, .175) !default;
 // scss-docs-end border-variables
 
 // scss-docs-start border-radius-variables
-$border-radius:               .25rem !default;
-$border-radius-sm:            .2rem !default;
-$border-radius-lg:            .3rem !default;
+$border-radius:               .375rem !default;
+$border-radius-sm:            .25rem !default;
+$border-radius-lg:            .5rem !default;
+$border-radius-xl:            1rem !default;
+$border-radius-xxl:           2rem !default;
 $border-radius-pill:          50rem !default;
 // scss-docs-end border-radius-variables
+// fusv-disable
+$border-radius-2xl:           $border-radius-xxl !default; // Deprecated in v5.3.0
+// fusv-enable
 
 // scss-docs-start box-shadow-variables
 $box-shadow:                  0 .5rem 1rem rgba($black, .15) !default;
@@ -547,6 +560,14 @@ $box-shadow-inset:            inset 0 1px 2px rgba($black, .075) !default;
 $component-active-color:      $white !default;
 $component-active-bg:         $primary !default;
 
+// scss-docs-start focus-ring-variables
+$focus-ring-width:      .25rem !default;
+$focus-ring-opacity:    .25 !default;
+$focus-ring-color:      rgba($primary, $focus-ring-opacity) !default;
+$focus-ring-blur:       0 !default;
+$focus-ring-box-shadow: 0 0 $focus-ring-blur $focus-ring-width $focus-ring-color !default;
+// scss-docs-end focus-ring-variables
+
 // scss-docs-start caret-variables
 $caret-width:                 .3em !default;
 $caret-vertical-align:        $caret-width * .85 !default;
@@ -577,11 +598,11 @@ $aspect-ratios: (
 
 // scss-docs-start font-variables
 // stylelint-disable value-keyword-case
-$font-family-sans-serif:      "Source Sans Pro", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !default; // adminlte-modified
+$font-family-sans-serif:      "Source Sans Pro", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !default; // adminlte-modified
 $font-family-monospace:       SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !default;
 // stylelint-enable value-keyword-case
-$font-family-base:            var(--#{$variable-prefix}font-sans-serif) !default;
-$font-family-code:            var(--#{$variable-prefix}font-monospace) !default;
+$font-family-base:            var(--#{$prefix}font-sans-serif) !default;
+$font-family-code:            var(--#{$prefix}font-monospace) !default;
 
 // $font-size-root affects the value of `rem`, which is used for as well font sizes, paddings, and margins
 // $font-size-base affects the font size of the body text
@@ -595,6 +616,8 @@ $font-size-xl:                $font-size-base * 2 !default; // adminlte-modified
 $font-weight-lighter:         lighter !default;
 $font-weight-light:           300 !default;
 $font-weight-normal:          400 !default;
+$font-weight-medium:          500 !default;
+$font-weight-semibold:        600 !default;
 $font-weight-bold:            700 !default;
 $font-weight-bolder:          bolder !default;
 
@@ -646,6 +669,8 @@ $display-font-sizes: (
   6: 2.5rem
 ) !default;
 
+$display-font-family: null !default;
+$display-font-style:  null !default;
 $display-font-weight: 300 !default;
 $display-line-height: $headings-line-height !default;
 // scss-docs-end display-headings
@@ -658,7 +683,9 @@ $small-font-size:             .875em !default;
 
 $sub-sup-font-size:           .75em !default;
 
-$text-muted:                  $gray-600 !default;
+// fusv-disable
+$text-muted:                  var(--#{$prefix}secondary-color) !default; // Deprecated in 5.3.0
+// fusv-enable
 
 $initialism-font-size:        $small-font-size !default;
 
@@ -669,22 +696,26 @@ $blockquote-footer-font-size: $small-font-size !default;
 
 $hr-margin-y:                 $spacer !default;
 $hr-color:                    inherit !default;
-$hr-height:                   $border-width !default;
+
+// fusv-disable
+$hr-bg-color:                 null !default; // Deprecated in v5.2.0
+$hr-height:                   null !default; // Deprecated in v5.2.0
+// fusv-enable
+
+$hr-border-color:             null !default; // Allows for inherited colors
+$hr-border-width:             var(--#{$prefix}border-width) !default;
 $hr-opacity:                  .25 !default;
 
 $legend-margin-bottom:        .5rem !default;
 $legend-font-size:            1.5rem !default;
 $legend-font-weight:          null !default;
 
-$mark-padding:                .2em !default;
-
 $dt-font-weight:              $font-weight-bold !default;
 
-$nested-kbd-font-weight:      $font-weight-bold !default;
-
 $list-inline-padding:         .5rem !default;
 
-$mark-bg:                     #fcf8e3 !default;
+$mark-padding:                .1875em !default;
+$mark-bg:                     $yellow-100 !default;
 // scss-docs-end type-variables
 
 
@@ -700,7 +731,7 @@ $table-cell-padding-x-sm:     .25rem !default;
 
 $table-cell-vertical-align:   top !default;
 
-$table-color:                 $body-color !default;
+$table-color:                 var(--#{$prefix}body-color) !default;
 $table-bg:                    transparent !default;
 $table-accent-bg:             transparent !default;
 
@@ -719,14 +750,15 @@ $table-hover-bg-factor:       .075 !default;
 $table-hover-bg:              rgba($black, $table-hover-bg-factor) !default;
 
 $table-border-factor:         .1 !default;
-$table-border-width:          $border-width !default;
-$table-border-color:          $border-color !default;
+$table-border-width:          var(--#{$prefix}border-width) !default;
+$table-border-color:          var(--#{$prefix}border-color) !default;
 
 $table-striped-order:         odd !default;
+$table-striped-columns-order: even !default;
 
 $table-group-separator-color: currentcolor !default;
 
-$table-caption-color:         $text-muted !default;
+$table-caption-color:         var(--#{$prefix}secondary-color) !default;
 
 $table-bg-scale:              -80% !default;
 // scss-docs-end table-variables
@@ -756,11 +788,11 @@ $input-btn-font-family:       null !default;
 $input-btn-font-size:         $font-size-base !default;
 $input-btn-line-height:       $line-height-base !default;
 
-$input-btn-focus-width:         .25rem !default;
-$input-btn-focus-color-opacity: .25 !default;
-$input-btn-focus-color:         rgba($component-active-bg, $input-btn-focus-color-opacity) !default;
-$input-btn-focus-blur:          0 !default;
-$input-btn-focus-box-shadow:    0 0 $input-btn-focus-blur $input-btn-focus-width $input-btn-focus-color !default;
+$input-btn-focus-width:         $focus-ring-width !default;
+$input-btn-focus-color-opacity: $focus-ring-opacity !default;
+$input-btn-focus-color:         $focus-ring-color !default;
+$input-btn-focus-blur:          $focus-ring-blur !default;
+$input-btn-focus-box-shadow:    $focus-ring-box-shadow !default;
 
 $input-btn-padding-y-sm:      .25rem !default;
 $input-btn-padding-x-sm:      .5rem !default;
@@ -770,7 +802,7 @@ $input-btn-padding-y-lg:      .5rem !default;
 $input-btn-padding-x-lg:      1rem !default;
 $input-btn-font-size-lg:      $font-size-lg !default;
 
-$input-btn-border-width:      $border-width !default;
+$input-btn-border-width:      var(--#{$prefix}border-width) !default;
 // scss-docs-end input-btn-variables
 
 
@@ -803,8 +835,8 @@ $btn-focus-box-shadow:        $input-btn-focus-box-shadow !default;
 $btn-disabled-opacity:        .65 !default;
 $btn-active-box-shadow:       inset 0 3px 5px rgba($black, .125) !default;
 
-$btn-link-color:              $link-color !default;
-$btn-link-hover-color:        $link-hover-color !default;
+$btn-link-color:              var(--#{$prefix}link-color) !default;
+$btn-link-hover-color:        var(--#{$prefix}link-hover-color) !default;
 $btn-link-disabled-color:     $gray-600 !default;
 
 // Allows for customizing button radius independently from global border radius
@@ -832,7 +864,7 @@ $form-text-margin-top:                  .25rem !default;
 $form-text-font-size:                   $small-font-size !default;
 $form-text-font-style:                  null !default;
 $form-text-font-weight:                 null !default;
-$form-text-color:                       $text-muted !default;
+$form-text-color:                       var(--#{$prefix}secondary-color) !default;
 // scss-docs-end form-text-variables
 
 // scss-docs-start form-label-variables
@@ -859,12 +891,13 @@ $input-padding-y-lg:                    $input-btn-padding-y-lg !default;
 $input-padding-x-lg:                    $input-btn-padding-x-lg !default;
 $input-font-size-lg:                    $input-btn-font-size-lg !default;
 
-$input-bg:                              $body-bg !default;
-$input-disabled-bg:                     $gray-200 !default;
+$input-bg:                              var(--#{$prefix}body-bg) !default;
+$input-disabled-color:                  null !default;
+$input-disabled-bg:                     var(--#{$prefix}secondary-bg) !default;
 $input-disabled-border-color:           null !default;
 
-$input-color:                           $body-color !default;
-$input-border-color:                    $gray-400 !default;
+$input-color:                           var(--#{$prefix}body-color) !default;
+$input-border-color:                    var(--#{$prefix}border-color) !default;
 $input-border-width:                    $input-btn-border-width !default;
 $input-box-shadow:                      $box-shadow-inset !default;
 
@@ -878,10 +911,10 @@ $input-focus-color:                     $input-color !default;
 $input-focus-width:                     $input-btn-focus-width !default;
 $input-focus-box-shadow:                $input-btn-focus-box-shadow !default;
 
-$input-placeholder-color:               $gray-600 !default;
-$input-plaintext-color:                 $body-color !default;
+$input-placeholder-color:               var(--#{$prefix}secondary-color) !default;
+$input-plaintext-color:                 var(--#{$prefix}body-color) !default;
 
-$input-height-border:                   $input-border-width * 2 !default;
+$input-height-border:                   calc($input-border-width * 2) !default; // stylelint-disable-line function-disallowed-list
 
 $input-height-inner:                    add($input-line-height * 1em, $input-padding-y * 2) !default;
 $input-height-inner-half:               add($input-line-height * .5em, $input-padding-y) !default;
@@ -908,16 +941,16 @@ $form-check-transition:                   null !default;
 $form-check-input-active-filter:          brightness(90%) !default;
 
 $form-check-input-bg:                     $input-bg !default;
-$form-check-input-border:                 1px solid rgba($black, .25) !default;
+$form-check-input-border:                 var(--#{$prefix}border-width) solid var(--#{$prefix}border-color) !default;
 $form-check-input-border-radius:          .25em !default;
 $form-check-radio-border-radius:          50% !default;
 $form-check-input-focus-border:           $input-focus-border-color !default;
-$form-check-input-focus-box-shadow:       $input-btn-focus-box-shadow !default;
+$form-check-input-focus-box-shadow:       $focus-ring-box-shadow !default;
 
 $form-check-input-checked-color:          $component-active-color !default;
 $form-check-input-checked-bg-color:       $component-active-bg !default;
 $form-check-input-checked-border-color:   $form-check-input-checked-bg-color !default;
-$form-check-input-checked-bg-image:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path fill='none' stroke='#{$form-check-input-checked-color}' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/></svg>") !default;
+$form-check-input-checked-bg-image:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path fill='none' stroke='#{$form-check-input-checked-color}' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='m6 10 3 3 6-6'/></svg>") !default;
 $form-check-radio-checked-bg-image:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='2' fill='#{$form-check-input-checked-color}'/></svg>") !default;
 
 $form-check-input-indeterminate-color:          $component-active-color !default;
@@ -933,7 +966,7 @@ $form-check-inline-margin-end:    1rem !default;
 // scss-docs-end form-check-variables
 
 // scss-docs-start form-switch-variables
-$form-switch-color:               rgba(0, 0, 0, .25) !default;
+$form-switch-color:               rgba($black, .25) !default;
 $form-switch-width:               2em !default;
 $form-switch-padding-start:       $form-switch-width + .5em !default;
 $form-switch-bg-image:            url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='3' fill='#{$form-switch-color}'/></svg>") !default;
@@ -953,7 +986,7 @@ $input-group-addon-padding-y:           $input-padding-y !default;
 $input-group-addon-padding-x:           $input-padding-x !default;
 $input-group-addon-font-weight:         $input-font-weight !default;
 $input-group-addon-color:               $input-color !default;
-$input-group-addon-bg:                  $gray-200 !default;
+$input-group-addon-bg:                  var(--#{$prefix}tertiary-bg) !default;
 $input-group-addon-border-color:        $input-border-color !default;
 // scss-docs-end input-group-variables
 
@@ -968,12 +1001,12 @@ $form-select-line-height:           $input-line-height !default;
 $form-select-color:                 $input-color !default;
 $form-select-bg:                    $input-bg !default;
 $form-select-disabled-color:        null !default;
-$form-select-disabled-bg:           $gray-200 !default;
+$form-select-disabled-bg:           $input-disabled-bg !default;
 $form-select-disabled-border-color: $input-disabled-border-color !default;
 $form-select-bg-position:           right $form-select-padding-x center !default;
 $form-select-bg-size:               16px 12px !default; // In pixels because image dimensions
 $form-select-indicator-color:       $gray-800 !default;
-$form-select-indicator:             url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='#{$form-select-indicator-color}' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/></svg>") !default;
+$form-select-indicator:             url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='#{$form-select-indicator-color}' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/></svg>") !default;
 
 $form-select-feedback-icon-padding-end: $form-select-padding-x * 2.5 + $form-select-indicator-padding !default;
 $form-select-feedback-icon-position:    center right $form-select-indicator-padding !default;
@@ -981,7 +1014,7 @@ $form-select-feedback-icon-size:        $input-height-inner-half $input-height-i
 
 $form-select-border-width:        $input-border-width !default;
 $form-select-border-color:        $input-border-color !default;
-$form-select-border-radius:       $border-radius !default;
+$form-select-border-radius:       $input-border-radius !default;
 $form-select-box-shadow:          $box-shadow-inset !default;
 
 $form-select-focus-border-color:  $input-focus-border-color !default;
@@ -991,10 +1024,12 @@ $form-select-focus-box-shadow:    0 0 0 $form-select-focus-width $input-btn-focu
 $form-select-padding-y-sm:        $input-padding-y-sm !default;
 $form-select-padding-x-sm:        $input-padding-x-sm !default;
 $form-select-font-size-sm:        $input-font-size-sm !default;
+$form-select-border-radius-sm:    $input-border-radius-sm !default;
 
 $form-select-padding-y-lg:        $input-padding-y-lg !default;
 $form-select-padding-x-lg:        $input-padding-x-lg !default;
 $form-select-font-size-lg:        $input-font-size-lg !default;
+$form-select-border-radius-lg:    $input-border-radius-lg !default;
 
 $form-select-transition:          $input-transition !default;
 // scss-docs-end form-select-variables
@@ -1003,7 +1038,7 @@ $form-select-transition:          $input-transition !default;
 $form-range-track-width:          100% !default;
 $form-range-track-height:         .5rem !default;
 $form-range-track-cursor:         pointer !default;
-$form-range-track-bg:             $gray-300 !default;
+$form-range-track-bg:             var(--#{$prefix}tertiary-bg) !default;
 $form-range-track-border-radius:  1rem !default;
 $form-range-track-box-shadow:     $box-shadow-inset !default;
 
@@ -1016,26 +1051,28 @@ $form-range-thumb-box-shadow:              0 .1rem .25rem rgba($black, .1) !defa
 $form-range-thumb-focus-box-shadow:        0 0 0 1px $body-bg, $input-focus-box-shadow !default;
 $form-range-thumb-focus-box-shadow-width:  $input-focus-width !default; // For focus box shadow issue in Edge
 $form-range-thumb-active-bg:               tint-color($component-active-bg, 70%) !default;
-$form-range-thumb-disabled-bg:             $gray-500 !default;
+$form-range-thumb-disabled-bg:             var(--#{$prefix}secondary-color) !default;
 $form-range-thumb-transition:              background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
 // scss-docs-end form-range-variables
 
 // scss-docs-start form-file-variables
 $form-file-button-color:          $input-color !default;
-$form-file-button-bg:             $input-group-addon-bg !default;
-$form-file-button-hover-bg:       shade-color($form-file-button-bg, 5%) !default;
+$form-file-button-bg:             var(--#{$prefix}tertiary-bg) !default;
+$form-file-button-hover-bg:       var(--#{$prefix}secondary-bg) !default;
 // scss-docs-end form-file-variables
 
 // scss-docs-start form-floating-variables
-$form-floating-height:            add(3.5rem, $input-height-border) !default;
-$form-floating-line-height:       1.25 !default;
-$form-floating-padding-x:         $input-padding-x !default;
-$form-floating-padding-y:         1rem !default;
-$form-floating-input-padding-t:   1.625rem !default;
-$form-floating-input-padding-b:   .625rem !default;
-$form-floating-label-opacity:     .65 !default;
-$form-floating-label-transform:   scale(.85) translateY(-.5rem) translateX(.15rem) !default;
-$form-floating-transition:        opacity .1s ease-in-out, transform .1s ease-in-out !default;
+$form-floating-height:                  add(3.5rem, $input-height-border) !default;
+$form-floating-line-height:             1.25 !default;
+$form-floating-padding-x:               $input-padding-x !default;
+$form-floating-padding-y:               1rem !default;
+$form-floating-input-padding-t:         1.625rem !default;
+$form-floating-input-padding-b:         .625rem !default;
+$form-floating-label-height:            1.875em !default;
+$form-floating-label-opacity:           .65 !default;
+$form-floating-label-transform:         scale(.85) translateY(-.5rem) translateX(.15rem) !default;
+$form-floating-label-disabled-color:    $gray-600 !default;
+$form-floating-transition:              opacity .1s ease-in-out, transform .1s ease-in-out !default;
 // scss-docs-end form-floating-variables
 
 // Form validation
@@ -1048,7 +1085,7 @@ $form-feedback-valid-color:         $success !default;
 $form-feedback-invalid-color:       $danger !default;
 
 $form-feedback-icon-valid-color:    $form-feedback-valid-color !default;
-$form-feedback-icon-valid:          url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'><path fill='#{$form-feedback-icon-valid-color}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>") !default;
+$form-feedback-icon-valid:          url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'><path fill='#{$form-feedback-icon-valid-color}' d='M2.3 6.73.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>") !default;
 $form-feedback-icon-invalid-color:  $form-feedback-invalid-color !default;
 $form-feedback-icon-invalid:        url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='#{$form-feedback-icon-invalid-color}'><circle cx='6' cy='6' r='4.5'/><path stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/><circle cx='6' cy='8.2' r='.6' fill='#{$form-feedback-icon-invalid-color}' stroke='none'/></svg>") !default;
 // scss-docs-end form-feedback-variables
@@ -1056,12 +1093,20 @@ $form-feedback-icon-invalid:        url("data:image/svg+xml,<svg xmlns='http://w
 // scss-docs-start form-validation-states
 $form-validation-states: (
   "valid": (
-    "color": $form-feedback-valid-color,
-    "icon": $form-feedback-icon-valid
+    "color": var(--#{$prefix}success-text),
+    "icon": $form-feedback-icon-valid,
+    "tooltip-color": #fff,
+    "tooltip-bg-color": var(--#{$prefix}success),
+    "focus-box-shadow": 0 0 $input-btn-focus-blur $input-focus-width rgba(var(--#{$prefix}success-rgb), $input-btn-focus-color-opacity),
+    "border-color": var(--#{$prefix}success),
   ),
   "invalid": (
-    "color": $form-feedback-invalid-color,
-    "icon": $form-feedback-icon-invalid
+    "color": var(--#{$prefix}danger-text),
+    "icon": $form-feedback-icon-invalid,
+    "tooltip-color": #fff,
+    "tooltip-bg-color": var(--#{$prefix}danger),
+    "focus-box-shadow": 0 0 $input-btn-focus-blur $input-focus-width rgba(var(--#{$prefix}danger-rgb), $input-btn-focus-color-opacity),
+    "border-color": var(--#{$prefix}danger),
   )
 ) !default;
 // scss-docs-end form-validation-states
@@ -1081,8 +1126,19 @@ $zindex-modal-backdrop:             1050 !default;
 $zindex-modal:                      1055 !default;
 $zindex-popover:                    1070 !default;
 $zindex-tooltip:                    1080 !default;
+$zindex-toast:                      1090 !default;
 // scss-docs-end zindex-stack
 
+// scss-docs-start zindex-levels-map
+$zindex-levels: (
+  n1: -1,
+  0: 0,
+  1: 1,
+  2: 2,
+  3: 3
+) !default;
+// scss-docs-end zindex-levels-map
+
 
 // Navs
 
@@ -1091,22 +1147,28 @@ $nav-link-padding-y:                .5rem !default;
 $nav-link-padding-x:                1rem !default;
 $nav-link-font-size:                null !default;
 $nav-link-font-weight:              null !default;
-$nav-link-color:                    $link-color !default;
-$nav-link-hover-color:              $link-hover-color !default;
+$nav-link-color:                    var(--#{$prefix}link-color) !default;
+$nav-link-hover-color:              var(--#{$prefix}link-hover-color) !default;
 $nav-link-transition:               color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out !default;
+$nav-link-disabled-color:           var(--#{$prefix}secondary-color) !default;
 $nav-link-disabled-color:           $gray-600 !default;
+$nav-link-focus-box-shadow:         $focus-ring-box-shadow !default;
 
-$nav-tabs-border-color:             $gray-300 !default;
-$nav-tabs-border-width:             $border-width !default;
-$nav-tabs-border-radius:            $border-radius !default;
-$nav-tabs-link-hover-border-color:  $gray-200 $gray-200 $nav-tabs-border-color !default;
-$nav-tabs-link-active-color:        $gray-700 !default;
-$nav-tabs-link-active-bg:           $body-bg !default;
-$nav-tabs-link-active-border-color: $gray-300 $gray-300 $nav-tabs-link-active-bg !default;
+$nav-tabs-border-color:             var(--#{$prefix}border-color) !default;
+$nav-tabs-border-width:             var(--#{$prefix}border-width) !default;
+$nav-tabs-border-radius:            var(--#{$prefix}border-radius) !default;
+$nav-tabs-link-hover-border-color:  var(--#{$prefix}secondary-bg) var(--#{$prefix}secondary-bg) $nav-tabs-border-color !default;
+$nav-tabs-link-active-color:        var(--#{$prefix}emphasis-color) !default;
+$nav-tabs-link-active-bg:           var(--#{$prefix}body-bg) !default;
+$nav-tabs-link-active-border-color: var(--#{$prefix}border-color) var(--#{$prefix}border-color) $nav-tabs-link-active-bg !default;
 
 $nav-pills-border-radius:           $border-radius !default;
 $nav-pills-link-active-color:       $component-active-color !default;
 $nav-pills-link-active-bg:          $component-active-bg !default;
+
+$nav-underline-gap:                 1rem !default;
+$nav-underline-border-width:        .125rem !default;
+$nav-underline-link-active-color:   var(--#{$prefix}emphasis-color) !default;
 // scss-docs-end nav-variables
 
 
@@ -1131,28 +1193,28 @@ $navbar-toggler-font-size:          $font-size-lg !default;
 $navbar-toggler-border-radius:      $btn-border-radius !default;
 $navbar-toggler-focus-width:        $btn-focus-width !default;
 $navbar-toggler-transition:         box-shadow .15s ease-in-out !default;
+
+$navbar-light-color:                rgba(var(--#{$prefix}emphasis-color-rgb), .65) !default;
+$navbar-light-hover-color:          rgba(var(--#{$prefix}emphasis-color-rgb), .8) !default;
+$navbar-light-active-color:         rgba(var(--#{$prefix}emphasis-color-rgb), 1) !default;
+$navbar-light-disabled-color:       rgba(var(--#{$prefix}emphasis-color-rgb), .3) !default;
+$navbar-light-icon-color:           rgba($body-color, .75) !default;
+$navbar-light-toggler-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-light-icon-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
+$navbar-light-toggler-border-color: rgba(var(--#{$prefix}emphasis-color-rgb), .15) !default;
+$navbar-light-brand-color:          $navbar-light-active-color !default;
+$navbar-light-brand-hover-color:    $navbar-light-active-color !default;
 // scss-docs-end navbar-variables
 
-// scss-docs-start navbar-theme-variables
+// scss-docs-start navbar-dark-variables
 $navbar-dark-color:                 rgba($white, .55) !default;
 $navbar-dark-hover-color:           rgba($white, .75) !default;
 $navbar-dark-active-color:          $white !default;
 $navbar-dark-disabled-color:        rgba($white, .25) !default;
 $navbar-dark-toggler-icon-bg:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-dark-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
 $navbar-dark-toggler-border-color:  rgba($white, .1) !default;
-
-$navbar-light-color:                rgba($black, .55) !default;
-$navbar-light-hover-color:          rgba($black, .7) !default;
-$navbar-light-active-color:         rgba($black, .9) !default;
-$navbar-light-disabled-color:       rgba($black, .3) !default;
-$navbar-light-toggler-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-light-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
-$navbar-light-toggler-border-color: rgba($black, .1) !default;
-
-$navbar-light-brand-color:                $navbar-light-active-color !default;
-$navbar-light-brand-hover-color:          $navbar-light-active-color !default;
-$navbar-dark-brand-color:                 $navbar-dark-active-color !default;
-$navbar-dark-brand-hover-color:           $navbar-dark-active-color !default;
-// scss-docs-end navbar-theme-variables
+$navbar-dark-brand-color:           $navbar-dark-active-color !default;
+$navbar-dark-brand-hover-color:     $navbar-dark-active-color !default;
+// scss-docs-end navbar-dark-variables
 
 
 // Dropdowns
@@ -1165,19 +1227,19 @@ $dropdown-padding-x:                0 !default;
 $dropdown-padding-y:                .5rem !default;
 $dropdown-spacer:                   .125rem !default;
 $dropdown-font-size:                $font-size-base !default;
-$dropdown-color:                    $body-color !default;
-$dropdown-bg:                       $white !default;
-$dropdown-border-color:             rgba($black, .15) !default;
+$dropdown-color:                    var(--#{$prefix}body-color) !default;
+$dropdown-bg:                       var(--#{$prefix}body-bg) !default;
+$dropdown-border-color:             var(--#{$prefix}border-color-translucent) !default;
 $dropdown-border-radius:            $border-radius !default;
-$dropdown-border-width:             $border-width !default;
-$dropdown-inner-border-radius:      subtract($dropdown-border-radius, $dropdown-border-width) !default;
+$dropdown-border-width:             var(--#{$prefix}border-width) !default;
+$dropdown-inner-border-radius:      calc($dropdown-border-radius - $dropdown-border-width) !default; // stylelint-disable-line function-disallowed-list
 $dropdown-divider-bg:               $dropdown-border-color !default;
 $dropdown-divider-margin-y:         $spacer * .5 !default;
 $dropdown-box-shadow:               $box-shadow !default;
 
-$dropdown-link-color:               $gray-900 !default;
-$dropdown-link-hover-color:         shade-color($dropdown-link-color, 10%) !default;
-$dropdown-link-hover-bg:            $gray-200 !default;
+$dropdown-link-color:               var(--#{$prefix}body-color) !default;
+$dropdown-link-hover-color:         $dropdown-link-color !default;
+$dropdown-link-hover-bg:            var(--#{$prefix}tertiary-bg) !default;
 
 $dropdown-link-active-color:        $component-active-color !default;
 $dropdown-link-active-bg:           $component-active-bg !default;
@@ -1188,7 +1250,11 @@ $dropdown-item-padding-y:           $spacer * .25 !default;
 $dropdown-item-padding-x:           $spacer !default;
 
 $dropdown-header-color:             $gray-600 !default;
-$dropdown-header-padding:           $dropdown-padding-y $dropdown-item-padding-x !default;
+$dropdown-header-padding-x:         $dropdown-item-padding-x !default;
+$dropdown-header-padding-y:         $dropdown-padding-y !default;
+// fusv-disable
+$dropdown-header-padding:           $dropdown-header-padding-y $dropdown-header-padding-x !default; // Deprecated in v5.2.0
+// fusv-enable
 // scss-docs-end dropdown-variables
 
 // scss-docs-start dropdown-dark-variables
@@ -1217,29 +1283,31 @@ $pagination-padding-x-sm:           .5rem !default;
 $pagination-padding-y-lg:           .75rem !default;
 $pagination-padding-x-lg:           1.5rem !default;
 
-$pagination-color:                  $link-color !default;
-$pagination-bg:                     $white !default;
-$pagination-border-width:           $border-width !default;
-$pagination-border-radius:          $border-radius !default;
-$pagination-margin-start:           -$pagination-border-width !default;
-$pagination-border-color:           $gray-300 !default;
+$pagination-font-size:              $font-size-base !default;
 
-$pagination-focus-color:            $link-hover-color !default;
-$pagination-focus-bg:               $gray-200 !default;
-$pagination-focus-box-shadow:       $input-btn-focus-box-shadow !default;
+$pagination-color:                  var(--#{$prefix}link-color) !default;
+$pagination-bg:                     var(--#{$prefix}body-bg) !default;
+$pagination-border-radius:          var(--#{$prefix}border-radius) !default;
+$pagination-border-width:           var(--#{$prefix}border-width) !default;
+$pagination-margin-start:           calc($pagination-border-width * -1) !default; // stylelint-disable-line function-disallowed-list
+$pagination-border-color:           var(--#{$prefix}border-color) !default;
+
+$pagination-focus-color:            var(--#{$prefix}link-hover-color) !default;
+$pagination-focus-bg:               var(--#{$prefix}secondary-bg) !default;
+$pagination-focus-box-shadow:       $focus-ring-box-shadow !default;
 $pagination-focus-outline:          0 !default;
 
-$pagination-hover-color:            $link-hover-color !default;
-$pagination-hover-bg:               $gray-200 !default;
-$pagination-hover-border-color:     $gray-300 !default;
+$pagination-hover-color:            var(--#{$prefix}link-hover-color) !default;
+$pagination-hover-bg:               var(--#{$prefix}tertiary-bg) !default;
+$pagination-hover-border-color:     var(--#{$prefix}border-color) !default; // Todo in v6: remove this?
 
 $pagination-active-color:           $component-active-color !default;
 $pagination-active-bg:              $component-active-bg !default;
-$pagination-active-border-color:    $pagination-active-bg !default;
+$pagination-active-border-color:    $component-active-bg !default;
 
-$pagination-disabled-color:         $gray-600 !default;
-$pagination-disabled-bg:            $white !default;
-$pagination-disabled-border-color:  $gray-300 !default;
+$pagination-disabled-color:         var(--#{$prefix}secondary-color) !default;
+$pagination-disabled-bg:            var(--#{$prefix}secondary-bg) !default;
+$pagination-disabled-border-color:  var(--#{$prefix}border-color) !default;
 
 $pagination-transition:              color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
 
@@ -1261,18 +1329,20 @@ $placeholder-opacity-min:           .2 !default;
 $card-spacer-y:                     $spacer !default;
 $card-spacer-x:                     $spacer !default;
 $card-title-spacer-y:               $spacer * .5 !default;
-$card-border-width:                 $border-width !default;
-$card-border-color:                 rgba($black, .125) !default;
-$card-border-radius:                $border-radius !default;
+$card-title-color:                  null !default;
+$card-subtitle-color:               null !default;
+$card-border-width:                 var(--#{$prefix}border-width) !default;
+$card-border-color:                 var(--#{$prefix}border-color-translucent) !default;
+$card-border-radius:                var(--#{$prefix}border-radius) !default;
 $card-box-shadow:                   null !default;
 $card-inner-border-radius:          subtract($card-border-radius, $card-border-width) !default;
 $card-cap-padding-y:                $card-spacer-y * .5 !default;
 $card-cap-padding-x:                $card-spacer-x !default;
-$card-cap-bg:                       rgba($black, .03) !default;
+$card-cap-bg:                       rgba(var(--#{$prefix}body-color-rgb), .03) !default;
 $card-cap-color:                    null !default;
 $card-height:                       null !default;
 $card-color:                        null !default;
-$card-bg:                           $white !default;
+$card-bg:                           var(--#{$prefix}body-bg) !default;
 $card-img-overlay-padding:          $spacer !default;
 $card-group-margin:                 $grid-gutter-width * .5 !default;
 // scss-docs-end card-variables
@@ -1282,11 +1352,11 @@ $card-group-margin:                 $grid-gutter-width * .5 !default;
 // scss-docs-start accordion-variables
 $accordion-padding-y:                     1rem !default;
 $accordion-padding-x:                     1.25rem !default;
-$accordion-color:                         $body-color !default;
-$accordion-bg:                            $body-bg !default;
-$accordion-border-width:                  $border-width !default;
-$accordion-border-color:                  rgba($black, .125) !default;
-$accordion-border-radius:                 $border-radius !default;
+$accordion-color:                         var(--#{$prefix}body-color) !default;
+$accordion-bg:                            var(--#{$prefix}body-bg) !default;
+$accordion-border-width:                  var(--#{$prefix}border-width) !default;
+$accordion-border-color:                  var(--#{$prefix}border-color) !default;
+$accordion-border-radius:                 var(--#{$prefix}border-radius) !default;
 $accordion-inner-border-radius:           subtract($accordion-border-radius, $accordion-border-width) !default;
 
 $accordion-body-padding-y:                $accordion-padding-y !default;
@@ -1294,18 +1364,18 @@ $accordion-body-padding-x:                $accordion-padding-x !default;
 
 $accordion-button-padding-y:              $accordion-padding-y !default;
 $accordion-button-padding-x:              $accordion-padding-x !default;
-$accordion-button-color:                  $accordion-color !default;
-$accordion-button-bg:                     $accordion-bg !default;
+$accordion-button-color:                  var(--#{$prefix}body-color) !default;
+$accordion-button-bg:                     var(--#{$prefix}accordion-bg) !default;
 $accordion-transition:                    $btn-transition, border-radius .15s ease !default;
-$accordion-button-active-bg:              tint-color($component-active-bg, 90%) !default;
-$accordion-button-active-color:           shade-color($primary, 10%) !default;
+$accordion-button-active-bg:              var(--#{$prefix}primary-bg-subtle) !default;
+$accordion-button-active-color:           var(--#{$prefix}primary-text) !default;
 
 $accordion-button-focus-border-color:     $input-focus-border-color !default;
 $accordion-button-focus-box-shadow:       $btn-focus-box-shadow !default;
 
 $accordion-icon-width:                    1.25rem !default;
-$accordion-icon-color:                    $accordion-button-color !default;
-$accordion-icon-active-color:             $accordion-button-active-color !default;
+$accordion-icon-color:                    $body-color !default;
+$accordion-icon-active-color:             $primary-text-emphasis !default;
 $accordion-icon-transition:               transform .2s ease-in-out !default;
 $accordion-icon-transform:                rotate(-180deg) !default;
 
@@ -1318,17 +1388,19 @@ $accordion-button-active-icon:  url("data:image/svg+xml,<svg xmlns='http://www.w
 // scss-docs-start tooltip-variables
 $tooltip-font-size:                 $font-size-sm !default;
 $tooltip-max-width:                 200px !default;
-$tooltip-color:                     $white !default;
-$tooltip-bg:                        $black !default;
-$tooltip-border-radius:             $border-radius !default;
+$tooltip-color:                     var(--#{$prefix}body-bg) !default;
+$tooltip-bg:                        var(--#{$prefix}emphasis-color) !default;
+$tooltip-border-radius:             var(--#{$prefix}border-radius) !default;
 $tooltip-opacity:                   .9 !default;
 $tooltip-padding-y:                 $spacer * .25 !default;
 $tooltip-padding-x:                 $spacer * .5 !default;
-$tooltip-margin:                    0 !default;
+$tooltip-margin:                    null !default; // TODO: remove this in v6
 
 $tooltip-arrow-width:               .8rem !default;
 $tooltip-arrow-height:              .4rem !default;
-$tooltip-arrow-color:               $tooltip-bg !default;
+// fusv-disable
+$tooltip-arrow-color:               null !default; // Deprecated in Bootstrap 5.2.0 for CSS variables
+// fusv-enable
 // scss-docs-end tooltip-variables
 
 // Form tooltips must come after regular tooltips
@@ -1346,30 +1418,34 @@ $form-feedback-tooltip-border-radius: $tooltip-border-radius !default;
 
 // scss-docs-start popover-variables
 $popover-font-size:                 $font-size-sm !default;
-$popover-bg:                        $white !default;
+$popover-bg:                        var(--#{$prefix}body-bg) !default;
 $popover-max-width:                 276px !default;
-$popover-border-width:              $border-width !default;
-$popover-border-color:              rgba($black, .2) !default;
-$popover-border-radius:             $border-radius-lg !default;
-$popover-inner-border-radius:       subtract($popover-border-radius, $popover-border-width) !default;
+$popover-border-width:              var(--#{$prefix}border-width) !default;
+$popover-border-color:              var(--#{$prefix}border-color-translucent) !default;
+$popover-border-radius:             var(--#{$prefix}border-radius-lg) !default;
+$popover-inner-border-radius:       calc($popover-border-radius - $popover-border-width) !default; // stylelint-disable-line function-disallowed-list
 $popover-box-shadow:                $box-shadow !default;
 
-$popover-header-bg:                 shade-color($popover-bg, 6%) !default;
+$popover-header-font-size:          $font-size-base !default;
+$popover-header-bg:                 var(--#{$prefix}secondary-bg) !default;
 $popover-header-color:              $headings-color !default;
 $popover-header-padding-y:          .5rem !default;
 $popover-header-padding-x:          $spacer !default;
 
-$popover-body-color:                $body-color !default;
+$popover-body-color:                var(--#{$prefix}body-color) !default;
 $popover-body-padding-y:            $spacer !default;
 $popover-body-padding-x:            $spacer !default;
 
 $popover-arrow-width:               1rem !default;
 $popover-arrow-height:              .5rem !default;
-$popover-arrow-color:               $popover-bg !default;
-
-$popover-arrow-outer-color:         fade-in($popover-border-color, .05) !default;
 // scss-docs-end popover-variables
 
+// fusv-disable
+// Deprecated in Bootstrap 5.2.0 for CSS variables
+$popover-arrow-color:               $popover-bg !default;
+$popover-arrow-outer-color:         var(--#{$prefix}border-color-translucent) !default;
+// fusv-enable
+
 
 // Toasts
 
@@ -1379,16 +1455,16 @@ $toast-padding-x:                   .75rem !default;
 $toast-padding-y:                   .5rem !default;
 $toast-font-size:                   .875rem !default;
 $toast-color:                       null !default;
-$toast-background-color:            rgba($white, .85) !default;
-$toast-border-width:                1px !default;
-$toast-border-color:                rgba(0, 0, 0, .1) !default;
-$toast-border-radius:               $border-radius !default;
-$toast-box-shadow:                  $box-shadow !default;
+$toast-background-color:            rgba(var(--#{$prefix}body-bg-rgb), .85) !default;
+$toast-border-width:                var(--#{$prefix}border-width) !default;
+$toast-border-color:                var(--#{$prefix}border-color-translucent) !default;
+$toast-border-radius:               var(--#{$prefix}border-radius) !default;
+$toast-box-shadow:                  var(--#{$prefix}box-shadow) !default;
 $toast-spacing:                     $container-padding-x !default;
 
-$toast-header-color:                $gray-600 !default;
-$toast-header-background-color:     rgba($white, .85) !default;
-$toast-header-border-color:         rgba(0, 0, 0, .05) !default;
+$toast-header-color:                var(--#{$prefix}secondary-color) !default;
+$toast-header-background-color:     rgba(var(--#{$prefix}body-bg-rgb), .85) !default;
+$toast-header-border-color:         $toast-border-color !default;
 // scss-docs-end toast-variables
 
 
@@ -1417,24 +1493,27 @@ $modal-dialog-margin-y-sm-up:       1.75rem !default;
 $modal-title-line-height:           $line-height-base !default;
 
 $modal-content-color:               null !default;
-$modal-content-bg:                  $white !default;
-$modal-content-border-color:        rgba($black, .2) !default;
-$modal-content-border-width:        $border-width !default;
-$modal-content-border-radius:       $border-radius-lg !default;
+$modal-content-bg:                  var(--#{$prefix}body-bg) !default;
+$modal-content-border-color:        var(--#{$prefix}border-color-translucent) !default;
+$modal-content-border-width:        var(--#{$prefix}border-width) !default;
+$modal-content-border-radius:       var(--#{$prefix}border-radius-lg) !default;
 $modal-content-inner-border-radius: subtract($modal-content-border-radius, $modal-content-border-width) !default;
 $modal-content-box-shadow-xs:       $box-shadow-sm !default;
 $modal-content-box-shadow-sm-up:    $box-shadow !default;
 
 $modal-backdrop-bg:                 $black !default;
 $modal-backdrop-opacity:            .5 !default;
-$modal-header-border-color:         $border-color !default;
-$modal-footer-border-color:         $modal-header-border-color !default;
+
+$modal-header-border-color:         var(--#{$prefix}border-color) !default;
 $modal-header-border-width:         $modal-content-border-width !default;
-$modal-footer-border-width:         $modal-header-border-width !default;
 $modal-header-padding-y:            $modal-inner-padding !default;
 $modal-header-padding-x:            $modal-inner-padding !default;
 $modal-header-padding:              $modal-header-padding-y $modal-header-padding-x !default; // Keep this for backwards compatibility
 
+$modal-footer-bg:                   null !default;
+$modal-footer-border-color:         $modal-header-border-color !default;
+$modal-footer-border-width:         $modal-header-border-width !default;
+
 $modal-sm:                          300px !default;
 $modal-md:                          500px !default;
 $modal-lg:                          800px !default;
@@ -1457,22 +1536,27 @@ $alert-padding-x:               $spacer !default;
 $alert-margin-bottom:           1rem !default;
 $alert-border-radius:           $border-radius !default;
 $alert-link-font-weight:        $font-weight-bold !default;
-$alert-border-width:            $border-width !default;
+$alert-border-width:            var(--#{$prefix}border-width) !default;
 $alert-bg-scale:                -80% !default;
 $alert-border-scale:            -70% !default;
 $alert-color-scale:             40% !default;
 $alert-dismissible-padding-r:   $alert-padding-x * 3 !default; // 3x covers width of x plus default padding on either side
 // scss-docs-end alert-variables
 
+// fusv-disable
+$alert-bg-scale:                -80% !default; // Deprecated in v5.2.0, to be removed in v6
+$alert-border-scale:            -70% !default; // Deprecated in v5.2.0, to be removed in v6
+$alert-color-scale:             40% !default; // Deprecated in v5.2.0, to be removed in v6
+// fusv-enable
 
 // Progress bars
 
 // scss-docs-start progress-variables
 $progress-height:                   1rem !default;
 $progress-font-size:                $font-size-base * .75 !default;
-$progress-bg:                       $gray-200 !default;
-$progress-border-radius:            $border-radius !default;
-$progress-box-shadow:               $box-shadow-inset !default;
+$progress-bg:                       var(--#{$prefix}secondary-bg) !default;
+$progress-border-radius:            var(--#{$prefix}border-radius) !default;
+$progress-box-shadow:               var(--#{$prefix}box-shadow-inset) !default;
 $progress-bar-color:                $white !default;
 $progress-bar-bg:                   $primary !default;
 $progress-bar-animation-timing:     1s linear infinite !default;
@@ -1483,30 +1567,32 @@ $progress-bar-transition:           width .6s ease !default;
 // List group
 
 // scss-docs-start list-group-variables
-$list-group-color:                  $gray-900 !default;
-$list-group-bg:                     $white !default;
-$list-group-border-color:           rgba($black, .125) !default;
-$list-group-border-width:           $border-width !default;
-$list-group-border-radius:          $border-radius !default;
+$list-group-color:                  var(--#{$prefix}body-color) !default;
+$list-group-bg:                     var(--#{$prefix}body-bg) !default;
+$list-group-border-color:           var(--#{$prefix}border-color) !default;
+$list-group-border-width:           var(--#{$prefix}border-width) !default;
+$list-group-border-radius:          var(--#{$prefix}border-radius) !default;
 
 $list-group-item-padding-y:         $spacer * .5 !default;
 $list-group-item-padding-x:         $spacer !default;
-$list-group-item-bg-scale:          -80% !default;
-$list-group-item-color-scale:       40% !default;
+// fusv-disable
+$list-group-item-bg-scale:          -80% !default; // Deprecated in v5.3.0
+$list-group-item-color-scale:       40% !default; // Deprecated in v5.3.0
+// fusv-enable
 
-$list-group-hover-bg:               $gray-100 !default;
+$list-group-hover-bg:               var(--#{$prefix}tertiary-bg) !default;
 $list-group-active-color:           $component-active-color !default;
 $list-group-active-bg:              $component-active-bg !default;
 $list-group-active-border-color:    $list-group-active-bg !default;
 
-$list-group-disabled-color:         $gray-600 !default;
+$list-group-disabled-color:         var(--#{$prefix}secondary-color) !default;
 $list-group-disabled-bg:            $list-group-bg !default;
 
-$list-group-action-color:           $gray-700 !default;
-$list-group-action-hover-color:     $list-group-action-color !default;
+$list-group-action-color:           var(--#{$prefix}secondary-color) !default;
+$list-group-action-hover-color:     var(--#{$prefix}emphasis-color) !default;
 
-$list-group-action-active-color:    $body-color !default;
-$list-group-action-active-bg:       $gray-200 !default;
+$list-group-action-active-color:    var(--#{$prefix}body-color) !default;
+$list-group-action-active-bg:       var(--#{$prefix}secondary-bg) !default;
 // scss-docs-end list-group-variables
 
 
@@ -1514,11 +1600,11 @@ $list-group-action-active-bg:       $gray-200 !default;
 
 // scss-docs-start thumbnail-variables
 $thumbnail-padding:                 .25rem !default;
-$thumbnail-bg:                      $body-bg !default;
-$thumbnail-border-width:            $border-width !default;
-$thumbnail-border-color:            $gray-300 !default;
-$thumbnail-border-radius:           $border-radius !default;
-$thumbnail-box-shadow:              $box-shadow-sm !default;
+$thumbnail-bg:                      var(--#{$prefix}body-bg) !default;
+$thumbnail-border-width:            var(--#{$prefix}border-width) !default;
+$thumbnail-border-color:            var(--#{$prefix}border-color) !default;
+$thumbnail-border-radius:           var(--#{$prefix}border-radius) !default;
+$thumbnail-box-shadow:              var(--#{$prefix}box-shadow-sm) !default;
 // scss-docs-end thumbnail-variables
 
 
@@ -1526,7 +1612,7 @@ $thumbnail-box-shadow:              $box-shadow-sm !default;
 
 // scss-docs-start figure-variables
 $figure-caption-font-size:          $small-font-size !default;
-$figure-caption-color:              $gray-600 !default;
+$figure-caption-color:              var(--#{$prefix}secondary-color) !default;
 // scss-docs-end figure-variables
 
 
@@ -1539,8 +1625,8 @@ $breadcrumb-padding-x:              0 !default;
 $breadcrumb-item-padding-x:         .5rem !default;
 $breadcrumb-margin-bottom:          1rem !default;
 $breadcrumb-bg:                     null !default;
-$breadcrumb-divider-color:          $gray-600 !default;
-$breadcrumb-active-color:           $gray-600 !default;
+$breadcrumb-divider-color:          var(--#{$prefix}secondary-color) !default;
+$breadcrumb-active-color:           var(--#{$prefix}secondary-color) !default;
 $breadcrumb-divider:                quote("/") !default;
 $breadcrumb-divider-flipped:        $breadcrumb-divider !default;
 $breadcrumb-border-radius:          null !default;
@@ -1576,11 +1662,13 @@ $carousel-control-next-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://
 
 $carousel-transition-duration:       .6s !default;
 $carousel-transition:                transform $carousel-transition-duration ease-in-out !default; // Define transform transition first if using multiple transitions (e.g., `transform 2s ease, opacity .5s ease-out`)
+// scss-docs-end carousel-variables
 
+// scss-docs-start carousel-dark-variables
 $carousel-dark-indicator-active-bg:  $black !default;
 $carousel-dark-caption-color:        $black !default;
 $carousel-dark-control-icon-filter:  invert(1) grayscale(100) !default;
-// scss-docs-end carousel-variables
+// scss-docs-end carousel-dark-variables
 
 
 // Spinners
@@ -1606,8 +1694,9 @@ $btn-close-height:           $btn-close-width !default;
 $btn-close-padding-x:        .25em !default;
 $btn-close-padding-y:        $btn-close-padding-x !default;
 $btn-close-color:            $black !default;
-$btn-close-bg:               url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$btn-close-color}'><path d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/></svg>") !default;
 $btn-close-focus-shadow:     $input-btn-focus-box-shadow !default;
+$btn-close-bg:               url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$btn-close-color}'><path d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/></svg>") !default;
+$btn-close-focus-shadow:     $focus-ring-box-shadow !default;
 $btn-close-opacity:          .5 !default;
 $btn-close-hover-opacity:    .75 !default;
 $btn-close-focus-opacity:    1 !default;
@@ -1627,8 +1716,8 @@ $offcanvas-transition-duration:     .3s !default;
 $offcanvas-border-color:            $modal-content-border-color !default;
 $offcanvas-border-width:            $modal-content-border-width !default;
 $offcanvas-title-line-height:       $modal-title-line-height !default;
-$offcanvas-bg-color:                $modal-content-bg !default;
-$offcanvas-color:                   $modal-content-color !default;
+$offcanvas-bg-color:                var(--#{$prefix}body-bg) !default;
+$offcanvas-color:                   var(--#{$prefix}body-color) !default;
 $offcanvas-box-shadow:              $modal-content-box-shadow-xs !default;
 $offcanvas-backdrop-bg:             $modal-backdrop-bg !default;
 $offcanvas-backdrop-opacity:        $modal-backdrop-opacity !default;
@@ -1639,10 +1728,11 @@ $offcanvas-backdrop-opacity:        $modal-backdrop-opacity !default;
 $code-font-size:                    $small-font-size !default;
 $code-color:                        $pink !default;
 
-$kbd-padding-y:                     .2rem !default;
-$kbd-padding-x:                     .4rem !default;
+$kbd-padding-y:                     .1875rem !default;
+$kbd-padding-x:                     .375rem !default;
 $kbd-font-size:                     $code-font-size !default;
-$kbd-color:                         $white !default;
-$kbd-bg:                            $gray-900 !default;
+$kbd-color:                         var(--#{$prefix}body-bg) !default;
+$kbd-bg:                            var(--#{$prefix}body-color) !default;
+$nested-kbd-font-weight:            null !default; // Deprecated in v5.2.0, removing in v6
 
 $pre-color:                         null !default;
diff --git a/src/scss/adminlte.scss b/src/scss/adminlte.scss
index f7782dddd..b7b07227c 100644
--- a/src/scss/adminlte.scss
+++ b/src/scss/adminlte.scss
@@ -5,15 +5,64 @@
  *   License: Open source - MIT <https://opensource.org/licenses/MIT>
  */
 
-// Bootstrap
+// Bootstrap Configuration
 // ---------------------------------------------------
 @import "bootstrap/scss/functions";
-@import "bootstrap-variables"; // little modified are here
-@import "bootstrap/scss/variables";
-@import "custom-utilities";
-@import "bootstrap/scss/bootstrap";
 
-// Variables and Mixins
+// AdminLTE Configuration
+// ---------------------------------------------------
+@import "bootstrap-variables"; // little modified are here
+@import "custom-utilities";
+
+// Bootstrap Configuration
+// ---------------------------------------------------
+@import "bootstrap/scss/variables";
+@import "bootstrap/scss/variables-dark";
+@import "bootstrap/scss/maps";
+@import "bootstrap/scss/mixins";
+@import "bootstrap/scss/utilities";
+
+// Bootstrap Layout & components
+@import "bootstrap/scss/root";
+@import "bootstrap/scss/reboot";
+@import "bootstrap/scss/type";
+@import "bootstrap/scss/images";
+@import "bootstrap/scss/containers";
+@import "bootstrap/scss/grid";
+@import "bootstrap/scss/tables";
+@import "bootstrap/scss/forms";
+@import "bootstrap/scss/buttons";
+@import "bootstrap/scss/transitions";
+@import "bootstrap/scss/dropdown";
+@import "bootstrap/scss/button-group";
+@import "bootstrap/scss/nav";
+@import "bootstrap/scss/navbar";
+@import "bootstrap/scss/card";
+@import "bootstrap/scss/accordion";
+@import "bootstrap/scss/breadcrumb";
+@import "bootstrap/scss/pagination";
+@import "bootstrap/scss/badge";
+@import "bootstrap/scss/alert";
+@import "bootstrap/scss/progress";
+@import "bootstrap/scss/list-group";
+@import "bootstrap/scss/close";
+@import "bootstrap/scss/toasts";
+@import "bootstrap/scss/modal";
+@import "bootstrap/scss/tooltip";
+@import "bootstrap/scss/popover";
+@import "bootstrap/scss/carousel";
+@import "bootstrap/scss/spinners";
+@import "bootstrap/scss/offcanvas";
+@import "bootstrap/scss/placeholders";
+
+// Bootstrap Helpers
+@import "bootstrap/scss/helpers";
+
+// Bootstrap Utilities
+@import "bootstrap/scss/utilities/api";
+
+
+// AdminLTE Configuration
 // ---------------------------------------------------
 @import "variables";
 @import "mixins";
diff --git a/src/scss/bootstrap-dark/_accordion.scss b/src/scss/bootstrap-dark/_accordion.scss
deleted file mode 100644
index 1820c3fbb..000000000
--- a/src/scss/bootstrap-dark/_accordion.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-// Base styles
-
-.accordion-button {
-  color: $accordion-button-color-alt;
-  background-color: $accordion-button-bg-alt;
-
-  &:not(.collapsed) {
-    color: $accordion-button-active-color-alt;
-    background-color: $accordion-button-active-bg-alt;
-    box-shadow: inset 0 ($accordion-border-width * -1) 0 $accordion-border-color-alt;
-
-    &::after {
-      background-image: escape-svg($accordion-button-active-icon-alt);
-    }
-  }
-
-  // Accordion icon
-  &::after {
-    background-image: escape-svg($accordion-button-icon-alt);
-  }
-
-  &:hover {
-    z-index: 2;
-  }
-
-  &:focus {
-    border-color: $accordion-button-focus-border-color-alt;
-    box-shadow: $accordion-button-focus-box-shadow-alt;
-  }
-}
-
-.accordion-item {
-  background-color: $accordion-bg-alt;
-  border: $accordion-border-width solid $accordion-border-color-alt;
-}
-
-// Flush accordion items
-
-.accordion-flush {
-  .accordion-collapse {
-    border-width: 0;
-  }
-
-  .accordion-item {
-    border-right: 0;
-    border-left: 0;
-
-    &:first-child { border-top: 0; }
-    &:last-child { border-bottom: 0; }
-  }
-}
diff --git a/src/scss/bootstrap-dark/_alert.scss b/src/scss/bootstrap-dark/_alert.scss
deleted file mode 100644
index 16e49efd7..000000000
--- a/src/scss/bootstrap-dark/_alert.scss
+++ /dev/null
@@ -1,25 +0,0 @@
-// Base styles
-
-// NOT NEEDED
-// .alert {
-//   border: $alert-border-width solid transparent;
-// }
-
-// Headings for larger alerts
-.alert-heading {
-  color: inherit;
-}
-
-// Generate contextual modifier classes for colorizing the alert.
-
-@each $state, $value in $theme-colors-alt {
-  $alert-background-alt: shift-color($value, $alert-bg-scale-alt);
-  $alert-border-alt: shift-color($value, $alert-border-scale-alt);
-  $alert-color-alt: shift-color($value, $alert-color-scale-alt);
-  @if (contrast-ratio($alert-background-alt, $alert-color-alt) < $min-contrast-ratio-alt) {
-    $alert-color-alt: mix($value, color-contrast($alert-background-alt, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt), abs($alert-color-scale-alt));
-  }
-  .alert-#{$state} {
-    @include alert-variant($alert-background-alt, $alert-border-alt, $alert-color-alt);
-  }
-}
diff --git a/src/scss/bootstrap-dark/_badge.scss b/src/scss/bootstrap-dark/_badge.scss
deleted file mode 100644
index 45c250dce..000000000
--- a/src/scss/bootstrap-dark/_badge.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-// Base class
-
-.badge {
-  color: $badge-color-alt;
-  // THIS DOES NOTHING
-  // @include gradient-bg();
-}
diff --git a/src/scss/bootstrap-dark/_breadcrumb.scss b/src/scss/bootstrap-dark/_breadcrumb.scss
deleted file mode 100644
index c3560d73f..000000000
--- a/src/scss/bootstrap-dark/_breadcrumb.scss
+++ /dev/null
@@ -1,17 +0,0 @@
-.breadcrumb {
-  background-color: $breadcrumb-bg-alt;
-}
-
-.breadcrumb-item {
-  // The separator between breadcrumbs (by default, a forward-slash: "/")
-  + .breadcrumb-item {
-
-    &::before {
-      color: $breadcrumb-divider-color-alt;
-    }
-  }
-
-  &.active {
-    color: $breadcrumb-active-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/_button-group.scss b/src/scss/bootstrap-dark/_button-group.scss
deleted file mode 100644
index 49234e151..000000000
--- a/src/scss/bootstrap-dark/_button-group.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-.btn-group.show .dropdown-toggle {
-  @include box-shadow($btn-active-box-shadow-alt);
-
-  // Show no shadow for `.btn-link` since it has no other button styles.
-  &.btn-link {
-    @include box-shadow(none);
-  }
-}
diff --git a/src/scss/bootstrap-dark/_buttons.scss b/src/scss/bootstrap-dark/_buttons.scss
deleted file mode 100644
index a0268f52c..000000000
--- a/src/scss/bootstrap-dark/_buttons.scss
+++ /dev/null
@@ -1,65 +0,0 @@
-// Base styles
-
-.btn {
-  color: $body-color-alt;
-  background-color: transparent;
-  border: $btn-border-width solid transparent;
-
-  &:hover {
-    color: $body-color-alt;
-  }
-
-  .btn-check:focus + &,
-  &:focus {
-    box-shadow: $btn-focus-box-shadow-alt;
-  }
-
-  .btn-check:checked + &,
-  .btn-check:active + &,
-  &:active,
-  &.active {
-    @include box-shadow($btn-active-box-shadow-alt);
-
-    &:focus {
-      @include box-shadow($btn-focus-box-shadow-alt, $btn-active-box-shadow-alt);
-    }
-  }
-
-  &:disabled,
-  &.disabled,
-  fieldset:disabled & {
-    opacity: $btn-disabled-opacity-alt;
-    @include box-shadow(none);
-  }
-}
-
-
-// Alternate buttons
-
-@each $color, $value in $theme-colors-alt {
-  .btn-#{$color} {
-    @include button-variant-alt($value, $value);
-  }
-}
-
-@each $color, $value in $theme-colors-alt {
-  .btn-outline-#{$color} {
-    @include button-outline-variant-alt($value);
-  }
-}
-
-// Link buttons
-
-// Make a button look and behave like a link
-.btn-link {
-  color: $btn-link-color-alt;
-
-  &:hover {
-    color: $btn-link-hover-color-alt;
-  }
-
-  &:disabled,
-  &.disabled {
-    color: $btn-link-disabled-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/_card.scss b/src/scss/bootstrap-dark/_card.scss
deleted file mode 100644
index 71e8d2f8c..000000000
--- a/src/scss/bootstrap-dark/_card.scss
+++ /dev/null
@@ -1,36 +0,0 @@
-// Base styles
-
-.card {
-  background-color: $card-bg-alt;
-  border: $card-border-width solid $card-border-color-alt;
-  @include box-shadow($card-box-shadow-alt);
-}
-
-.card-body {
-  color: $card-color-alt;
-}
-
-// Optional textual caps
-
-.card-header {
-  color: $card-cap-color-alt;
-  background-color: $card-cap-bg-alt;
-  border-bottom: $card-border-width solid $card-border-color-alt;
-}
-
-.card-footer {
-  color: $card-cap-color-alt;
-  background-color: $card-cap-bg-alt;
-  border-top: $card-border-width solid $card-border-color-alt;
-}
-
-// Header navs
-
-.card-header-tabs {
-  @if $nav-tabs-link-active-bg != $card-bg {
-    .nav-link.active {
-      background-color: $card-bg-alt;
-      border-bottom-color: $card-bg-alt;
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/_carousel.scss b/src/scss/bootstrap-dark/_carousel.scss
deleted file mode 100644
index aeb648346..000000000
--- a/src/scss/bootstrap-dark/_carousel.scss
+++ /dev/null
@@ -1,64 +0,0 @@
-// Left/right controls for nav
-
-.carousel-control-prev,
-.carousel-control-next {
-  color: $carousel-control-color-alt;
-  opacity: $carousel-control-opacity-alt;
-
-  // Hover/focus state
-  &:hover,
-  &:focus {
-    color: $carousel-control-color-alt;
-    opacity: $carousel-control-hover-opacity-alt;
-  }
-}
-.carousel-control-prev {
-  background-image: if($enable-gradients, linear-gradient(90deg, rgba($white-alt, .25), rgba($white-alt, .001)), null);
-}
-.carousel-control-next {
-  background-image: if($enable-gradients, linear-gradient(270deg, rgba($white, .25), rgba($white, .001)), null);
-}
-
-// Icons for within
-.carousel-control-prev-icon {
-  background-image: escape-svg($carousel-control-prev-icon-bg-alt);
-}
-.carousel-control-next-icon {
-  background-image: escape-svg($carousel-control-next-icon-bg-alt);
-}
-
-// Optional indicator pips/controls
-
-.carousel-indicators {
-  [data-bs-target] {
-    background-color: $carousel-indicator-active-bg-alt;
-    opacity: $carousel-indicator-opacity-alt;
-  }
-
-  .active {
-    opacity: $carousel-indicator-active-opacity-alt;
-  }
-}
-
-// Optional captions
-
-.carousel-caption {
-  color: $carousel-caption-color-alt;
-}
-
-// Dark mode carousel
-
-.carousel-dark {
-  .carousel-control-prev-icon,
-  .carousel-control-next-icon {
-    filter: $carousel-dark-control-icon-filter-alt;
-  }
-
-  .carousel-indicators [data-bs-target] {
-    background-color: $carousel-dark-indicator-active-bg-alt;
-  }
-
-  .carousel-caption {
-    color: $carousel-dark-caption-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/_close.scss b/src/scss/bootstrap-dark/_close.scss
deleted file mode 100644
index 37fc2bfa1..000000000
--- a/src/scss/bootstrap-dark/_close.scss
+++ /dev/null
@@ -1,25 +0,0 @@
-.btn-close {
-  color: $btn-close-color-alt;
-  background: transparent escape-svg($btn-close-bg-alt) center / $btn-close-width auto no-repeat; // include transparent for button elements
-  opacity: $btn-close-opacity-alt;
-
-  // Override <a>'s hover style
-  &:hover {
-    color: $btn-close-color-alt;
-    opacity: $btn-close-hover-opacity-alt;
-  }
-
-  &:focus {
-    box-shadow: $btn-close-focus-shadow-alt;
-    opacity: $btn-close-focus-opacity-alt;
-  }
-
-  &:disabled,
-  &.disabled {
-    opacity: $btn-close-disabled-opacity-alt;
-  }
-}
-
-.btn-close-white {
-  filter: $btn-close-white-filter-alt;
-}
diff --git a/src/scss/bootstrap-dark/_color-scheme.scss b/src/scss/bootstrap-dark/_color-scheme.scss
deleted file mode 100644
index c931859d7..000000000
--- a/src/scss/bootstrap-dark/_color-scheme.scss
+++ /dev/null
@@ -1,3 +0,0 @@
-:root {
-  @include color-scheme-property($default-color-scheme, true);
-}
diff --git a/src/scss/bootstrap-dark/_dark.scss b/src/scss/bootstrap-dark/_dark.scss
deleted file mode 100644
index 1274707c2..000000000
--- a/src/scss/bootstrap-dark/_dark.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// from Chris Coyier on Jul 26, 2016: https://css-tricks.com/overriding-the-default-text-selection-color-with-css/
-
-body::selection {
-  color: $selection-color-alt;
-  background: $selection-bg-alt;
-}
diff --git a/src/scss/bootstrap-dark/_dropdown.scss b/src/scss/bootstrap-dark/_dropdown.scss
deleted file mode 100644
index 606d87041..000000000
--- a/src/scss/bootstrap-dark/_dropdown.scss
+++ /dev/null
@@ -1,91 +0,0 @@
-// The dropdown menu
-.dropdown-menu {
-  color: $dropdown-color-alt;
-  background-color: $dropdown-bg-alt;
-  border: $dropdown-border-width solid $dropdown-border-color-alt;
-  @include box-shadow($dropdown-box-shadow-alt);
-}
-
-// Dividers (basically an `<hr>`) within the dropdown
-.dropdown-divider {
-  border-top: 1px solid $dropdown-divider-bg-alt;
-}
-
-// Links, buttons, and more within the dropdown menu
-.dropdown-item {
-  color: $dropdown-link-color-alt;
-  background-color: transparent; // For `<button>`s
-  border: 0; // For `<button>`s
-
-
-  &:hover,
-  &:focus {
-    color: $dropdown-link-hover-color-alt;
-    @include gradient-bg($dropdown-link-hover-bg-alt);
-  }
-
-  &.active,
-  &:active {
-    color: $dropdown-link-active-color-alt;
-    @include gradient-bg($dropdown-link-active-bg-alt);
-  }
-
-  &.disabled,
-  &:disabled {
-    color: $dropdown-link-disabled-color-alt;
-    background-color: transparent;
-    // Remove CSS gradients if they're enabled
-    background-image: if($enable-gradients, none, null);
-  }
-}
-
-// Dropdown section headers
-.dropdown-header {
-  color: $dropdown-header-color-alt;
-}
-
-// Dropdown text
-.dropdown-item-text {
-  color: $dropdown-link-color-alt;
-}
-
-// Dark dropdowns
-.dropdown-menu-dark {
-  color: $dropdown-dark-color-alt;
-  background-color: $dropdown-dark-bg-alt;
-  border-color: $dropdown-dark-border-color-alt;
-  @include box-shadow($dropdown-dark-box-shadow-alt);
-
-  .dropdown-item {
-    color: $dropdown-dark-link-color-alt;
-
-    &:hover,
-    &:focus {
-      color: $dropdown-dark-link-hover-color-alt;
-      @include gradient-bg($dropdown-dark-link-hover-bg-alt);
-    }
-
-    &.active,
-    &:active {
-      color: $dropdown-dark-link-active-color-alt;
-      @include gradient-bg($dropdown-dark-link-active-bg-alt);
-    }
-
-    &.disabled,
-    &:disabled {
-      color: $dropdown-dark-link-disabled-color-alt;
-    }
-  }
-
-  .dropdown-divider {
-    border-color: $dropdown-dark-divider-bg-alt;
-  }
-
-  .dropdown-item-text {
-    color: $dropdown-dark-link-color-alt;
-  }
-
-  .dropdown-header {
-    color: $dropdown-dark-header-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/_forms.scss b/src/scss/bootstrap-dark/_forms.scss
deleted file mode 100644
index 7b17d849a..000000000
--- a/src/scss/bootstrap-dark/_forms.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-@import "forms/labels";
-@import "forms/form-text";
-@import "forms/form-control";
-@import "forms/form-select";
-@import "forms/form-check";
-@import "forms/form-range";
-@import "forms/floating-labels";
-@import "forms/input-group";
-@import "forms/validation";
diff --git a/src/scss/bootstrap-dark/_helpers.scss b/src/scss/bootstrap-dark/_helpers.scss
deleted file mode 100644
index 89b502389..000000000
--- a/src/scss/bootstrap-dark/_helpers.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-// @import "helpers/clearfix";  // no colors here
-@import "helpers/colored-links";
-// @import "helpers/ratio";  // no colors here
-// @import "helpers/position";  // no colors here
-// @import "helpers/stacks";  // no colors here
-// @import "helpers/visually-hidden";  // no colors here
-// @import "helpers/stretched-link";  // no colors here
-// @import "helpers/text-truncation";  // no colors here
-@import "helpers/vr";
diff --git a/src/scss/bootstrap-dark/_images.scss b/src/scss/bootstrap-dark/_images.scss
deleted file mode 100644
index 4385f3413..000000000
--- a/src/scss/bootstrap-dark/_images.scss
+++ /dev/null
@@ -1,14 +0,0 @@
-// Image thumbnails
-.img-thumbnail {
-  background-color: $thumbnail-bg-alt;
-  border: $thumbnail-border-width solid $thumbnail-border-color-alt;
-  @include box-shadow($thumbnail-box-shadow-alt);
-}
-
-//
-// Figures
-//
-
-.figure-caption {
-  color: $figure-caption-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_list-group.scss b/src/scss/bootstrap-dark/_list-group.scss
deleted file mode 100644
index e125c30de..000000000
--- a/src/scss/bootstrap-dark/_list-group.scss
+++ /dev/null
@@ -1,63 +0,0 @@
-// Interactive list items
-
-.list-group-item-action {
-  color: $list-group-action-color-alt;
-
-  // Hover state
-  &:hover,
-  &:focus {
-    color: $list-group-action-hover-color-alt;
-    background-color: $list-group-hover-bg-alt;
-  }
-
-  &:active {
-    color: $list-group-action-active-color-alt;
-    background-color: $list-group-action-active-bg-alt;
-  }
-}
-
-// Individual list items
-
-.list-group-item {
-  color: $list-group-color-alt;
-  background-color: $list-group-bg-alt;
-  border: $list-group-border-width solid $list-group-border-color-alt;
-
-  &.disabled,
-  &:disabled {
-    color: $list-group-disabled-color-alt;
-    background-color: $list-group-disabled-bg-alt;
-  }
-
-  // Include both here for `<a>`s and `<button>`s
-  &.active {
-    color: $list-group-active-color-alt;
-    background-color: $list-group-active-bg-alt;
-    border-color: $list-group-active-border-color-alt;
-  }
-}
-
-// Flush list items
-
-.list-group-flush {
-
-  > .list-group-item {
-    border-width: 0 0 $list-group-border-width;  // needed for nightshade variants
-
-    &:last-child {
-      border-bottom-width: 0;
-    }
-  }
-}
-
-// List group contextual variants
-
-@each $state, $value in $theme-colors-alt {
-  $list-group-variant-bg-alt: shift-color($value, $list-group-item-bg-scale-alt);
-  $list-group-variant-color-alt: shift-color($value, $list-group-item-color-scale-alt);
-  @if (contrast-ratio($list-group-variant-bg-alt, $list-group-variant-color-alt) < $min-contrast-ratio-alt) {
-    $list-group-variant-color-alt: mix($value, color-contrast($list-group-variant-bg-alt, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt), abs($list-group-item-color-scale-alt));
-  }
-
-  @include list-group-item-variant($state, $list-group-variant-bg-alt, $list-group-variant-color-alt);
-}
diff --git a/src/scss/bootstrap-dark/_mixins.scss b/src/scss/bootstrap-dark/_mixins.scss
deleted file mode 100644
index 518a88a1e..000000000
--- a/src/scss/bootstrap-dark/_mixins.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-@import "mixins/color-scheme";
-@import "mixins/backdrop";
-@import "mixins/buttons";
-@import "mixins/forms";
-@import "mixins/table-variants";
diff --git a/src/scss/bootstrap-dark/_modal.scss b/src/scss/bootstrap-dark/_modal.scss
deleted file mode 100644
index 7432c5e8d..000000000
--- a/src/scss/bootstrap-dark/_modal.scss
+++ /dev/null
@@ -1,31 +0,0 @@
-// Actual modal
-.modal-content {
-  color: $modal-content-color-alt;
-  background-color: $modal-content-bg-alt;
-  border: $modal-content-border-width solid $modal-content-border-color-alt;
-  @include box-shadow($modal-content-box-shadow-xs-alt);
-}
-
-// Modal background
-.modal-backdrop {
-  @include overlay-backdrop-alt($modal-backdrop-bg-alt, $modal-backdrop-opacity-alt);
-}
-
-// Modal header
-// Top section of the modal w/ title and dismiss
-.modal-header {
-  border-bottom: $modal-header-border-width solid $modal-header-border-color-alt;
-}
-
-// Footer (for actions)
-.modal-footer {
-  border-top: $modal-footer-border-width solid $modal-footer-border-color-alt;
-}
-
-// Scale up the modal
-@include media-breakpoint-up(sm) {
-  // Automatically set modal's width for larger viewports
-  .modal-content {
-    @include box-shadow($modal-content-box-shadow-sm-up-alt);
-  }
-}
diff --git a/src/scss/bootstrap-dark/_nav.scss b/src/scss/bootstrap-dark/_nav.scss
deleted file mode 100644
index 2b93bd6de..000000000
--- a/src/scss/bootstrap-dark/_nav.scss
+++ /dev/null
@@ -1,64 +0,0 @@
-// Base class
-
-.nav-link {
-  color: $nav-link-color-alt;
-
-  &:hover,
-  &:focus {
-    color: $nav-link-hover-color-alt;
-  }
-
-  // Disabled state lightens text
-  &.disabled {
-    color: $nav-link-disabled-color-alt;
-  }
-}
-
-//
-// Tabs
-//
-
-.nav-tabs {
-  border-bottom: $nav-tabs-border-width solid $nav-tabs-border-color-alt;
-
-  .nav-link {
-    // background: none;
-    border: $nav-tabs-border-width solid transparent;
-
-    &:hover,
-    &:focus {
-      border-color: $nav-tabs-link-hover-border-color-alt;
-    }
-
-    &.disabled {
-      color: $nav-link-disabled-color-alt;
-      background-color: transparent;
-      border-color: transparent;
-    }
-  }
-
-  .nav-link.active,
-  .nav-item.show .nav-link {
-    color: $nav-tabs-link-active-color-alt;
-    background-color: $nav-tabs-link-active-bg-alt;
-    border-color: $nav-tabs-link-active-border-color-alt;
-  }
-}
-
-
-//
-// Pills
-//
-
-.nav-pills {
-  // .nav-link {
-  //   background: none;
-  //   border: 0;
-  // }
-
-  .nav-link.active,
-  .show > .nav-link {
-    color: $nav-pills-link-active-color-alt;
-    @include gradient-bg($nav-pills-link-active-bg-alt);
-  }
-}
diff --git a/src/scss/bootstrap-dark/_navbar.scss b/src/scss/bootstrap-dark/_navbar.scss
deleted file mode 100644
index 982dc78ac..000000000
--- a/src/scss/bootstrap-dark/_navbar.scss
+++ /dev/null
@@ -1,136 +0,0 @@
-// Navbar
-
-// THIS DOES NOTHING
-// .navbar {
-//   @include gradient-bg();
-// }
-
-// Button for toggling the navbar when in its collapsed state
-.navbar-toggler {
-  background-color: transparent; // remove default button style
-  border: $border-width solid transparent; // remove default button style
-
-  // &:focus {
-  //   box-shadow: 0 0 0 $navbar-toggler-focus-width;
-  // }
-}
-
-// Generate series of `.navbar-expand-*` responsive classes for configuring
-// where your navbar collapses.
-// TODO : NB!!!  THIS BREAKS THE MEDIA QUERY GENERATION
-// .navbar-expand {
-//   @each $breakpoint in map-keys($grid-breakpoints) {
-//     $next: breakpoint-next($breakpoint, $grid-breakpoints);
-//     $infix: breakpoint-infix($next, $grid-breakpoints);
-//
-//     // stylelint-disable-next-line scss/selector-no-union-class-name
-//     &#{$infix} {
-//       @include media-breakpoint-up($next) {
-//         .offcanvas {
-//           background-color: transparent;
-//         }
-//       }
-//     }
-//   }
-// }
-
-// Navbar themes
-.navbar-light {
-  .navbar-brand {
-    color: $navbar-light-brand-color-alt;
-
-    &:hover,
-    &:focus {
-      color: $navbar-light-brand-hover-color-alt;
-    }
-  }
-
-  .navbar-nav {
-    .nav-link {
-      color: $navbar-light-color-alt;
-
-      &:hover,
-      &:focus {
-        color: $navbar-light-hover-color-alt;
-      }
-
-      &.disabled {
-        color: $navbar-light-disabled-color-alt;
-      }
-    }
-
-    .show > .nav-link,
-    .nav-link.active {
-      color: $navbar-light-active-color-alt;
-    }
-  }
-
-  .navbar-toggler {
-    color: $navbar-light-color-alt;
-    border-color: $navbar-light-toggler-border-color-alt;
-  }
-
-  .navbar-toggler-icon {
-    background-image: escape-svg($navbar-light-toggler-icon-bg-alt);
-  }
-
-  .navbar-text {
-    color: $navbar-light-color-alt;
-
-    a,
-    a:hover,
-    a:focus  {
-      color: $navbar-light-active-color-alt;
-    }
-  }
-}
-
-// White links against a dark background
-.navbar-dark {
-  .navbar-brand {
-    color: $navbar-dark-brand-color-alt;
-
-    &:hover,
-    &:focus {
-      color: $navbar-dark-brand-hover-color-alt;
-    }
-  }
-
-  .navbar-nav {
-    .nav-link {
-      color: $navbar-dark-color-alt;
-
-      &:hover,
-      &:focus {
-        color: $navbar-dark-hover-color-alt;
-      }
-
-      &.disabled {
-        color: $navbar-dark-disabled-color-alt;
-      }
-    }
-
-    .show > .nav-link,
-    .nav-link.active {
-      color: $navbar-dark-active-color-alt;
-    }
-  }
-
-  .navbar-toggler {
-    color: $navbar-dark-color-alt;
-    border-color: $navbar-dark-toggler-border-color-alt;
-  }
-
-  .navbar-toggler-icon {
-    background-image: escape-svg($navbar-dark-toggler-icon-bg-alt);
-  }
-
-  .navbar-text {
-    color: $navbar-dark-color-alt;
-    a,
-    a:hover,
-    a:focus {
-      color: $navbar-dark-active-color-alt;
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/_offcanvas.scss b/src/scss/bootstrap-dark/_offcanvas.scss
deleted file mode 100644
index 6743eeed4..000000000
--- a/src/scss/bootstrap-dark/_offcanvas.scss
+++ /dev/null
@@ -1,25 +0,0 @@
-.offcanvas {
-  color: $offcanvas-color-alt;
-  background-color: $offcanvas-bg-color-alt;
-  @include box-shadow($offcanvas-box-shadow-alt);
-}
-
-.offcanvas-backdrop {
-  @include overlay-backdrop-alt($offcanvas-backdrop-bg-alt, $offcanvas-backdrop-opacity-alt);
-}
-
-.offcanvas-start {
-  border-right: $offcanvas-border-width solid $offcanvas-border-color-alt;
-}
-
-.offcanvas-end {
-  border-left: $offcanvas-border-width solid $offcanvas-border-color-alt;
-}
-
-.offcanvas-top {
-  border-bottom: $offcanvas-border-width solid $offcanvas-border-color-alt;
-}
-
-.offcanvas-bottom {
-  border-top: $offcanvas-border-width solid $offcanvas-border-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_pagination.scss b/src/scss/bootstrap-dark/_pagination.scss
deleted file mode 100644
index c7d920a77..000000000
--- a/src/scss/bootstrap-dark/_pagination.scss
+++ /dev/null
@@ -1,32 +0,0 @@
-.page-link {
-  color: $pagination-color-alt;
-  background-color: $pagination-bg-alt;
-  border: $pagination-border-width solid $pagination-border-color-alt;
-
-  &:hover {
-    color: $pagination-hover-color-alt;
-    background-color: $pagination-hover-bg-alt;
-    border-color: $pagination-hover-border-color-alt;
-  }
-
-  &:focus {
-    color: $pagination-focus-color-alt;
-    background-color: $pagination-focus-bg-alt;
-    outline: $pagination-focus-outline-alt;
-    box-shadow: $pagination-focus-box-shadow-alt;
-  }
-}
-
-.page-item {
-  &.active .page-link {
-    color: $pagination-active-color-alt;
-    @include gradient-bg($pagination-active-bg-alt);
-    border-color: $pagination-active-border-color-alt;
-  }
-
-  &.disabled .page-link {
-    color: $pagination-disabled-color-alt;
-    background-color: $pagination-disabled-bg-alt;
-    border-color: $pagination-disabled-border-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/_patch.scss b/src/scss/bootstrap-dark/_patch.scss
deleted file mode 100644
index 377e093c1..000000000
--- a/src/scss/bootstrap-dark/_patch.scss
+++ /dev/null
@@ -1,50 +0,0 @@
-//
-// Patch some items missing in BS5
-// @see: https://getbootstrap.com/docs/5.0/utilities/api/
-//
-
-// @import "functions";
-// @import "variables";
-// @import "utilities";
-
-// stylelint-disable-next-line scss/dollar-variable-default
-$colors: map-merge(
-  $colors,
-  (
-    "black": $black
-  )
-);
-
-// stylelint-disable-next-line scss/dollar-variable-default
-$utilities: map-merge(
-  $utilities,
-  (
-    "border-color": map-merge(
-      map-get($utilities, "border-color"),
-      (
-        values: map-merge(
-          map-get(map-get($utilities, "border-color"), "values"),
-          ("black": $black),
-        ),
-      ),
-    ),
-    "color": map-merge(
-      map-get($utilities, "color"),
-      (
-        values: map-merge(
-          map-get(map-get($utilities, "color"), "values"),
-          ("black": $black),
-        ),
-      ),
-    ),
-    "background-color": map-merge(
-      map-get($utilities, "background-color"),
-      (
-        values: map-merge(
-          map-get(map-get($utilities, "background-color"), "values"),
-          ("black": $black),
-        ),
-      ),
-    ),
-  )
-);
diff --git a/src/scss/bootstrap-dark/_placeholders.scss b/src/scss/bootstrap-dark/_placeholders.scss
deleted file mode 100644
index f89d08b19..000000000
--- a/src/scss/bootstrap-dark/_placeholders.scss
+++ /dev/null
@@ -1,14 +0,0 @@
-.placeholder {
-  background-color: currentcolor;
-  opacity: $placeholder-opacity-max-alt;
-}
-
-@keyframes placeholder-glow {
-  50% {
-    opacity: $placeholder-opacity-min-alt;
-  }
-}
-
-.placeholder-wave {
-  mask-image: linear-gradient(130deg, $white-alt 55%, rgba(255, 255, 255, (1 - $placeholder-opacity-min-alt)) 75%, $white-alt 95%);
-}
diff --git a/src/scss/bootstrap-dark/_popover.scss b/src/scss/bootstrap-dark/_popover.scss
deleted file mode 100644
index 136e0db84..000000000
--- a/src/scss/bootstrap-dark/_popover.scss
+++ /dev/null
@@ -1,82 +0,0 @@
-.popover {
-  background-color: $popover-bg-alt;
-  border: $popover-border-width solid $popover-border-color-alt;
-  @include box-shadow($popover-box-shadow-alt);
-
-  .popover-arrow {
-    &::before,
-    &::after {
-      border-color: transparent;
-      border-style: solid;
-    }
-  }
-}
-
-.bs-popover-top,
-.bs-popover-auto[data-popper-placement^="top"] {  // see note below
-  > .popover-arrow {
-    &::before {
-      border-top-color: $popover-arrow-outer-color-alt;
-    }
-
-    &::after {
-      border-top-color: $popover-arrow-color-alt;
-    }
-  }
-}
-
-.bs-popover-end,
-.bs-popover-auto[data-popper-placement^="right"] {  // see note below
-  > .popover-arrow {
-    &::before {
-      border-right-color: $popover-arrow-outer-color-alt;
-    }
-
-    &::after {
-      border-right-color: $popover-arrow-color-alt;
-    }
-  }
-}
-
-.bs-popover-bottom,
-.bs-popover-auto[data-popper-placement^="bottom"] {  // see note below
-  > .popover-arrow {
-    &::before {
-      border-bottom-color: $popover-arrow-outer-color-alt;
-    }
-
-    &::after {
-      border-bottom-color: $popover-arrow-color-alt;
-    }
-  }
-
-  .popover-header::before {
-    border-bottom: $popover-border-width solid $popover-header-bg-alt;
-  }
-}
-
-.bs-popover-start,
-.bs-popover-auto[data-popper-placement^="left"] { // see note below
-  > .popover-arrow {
-    &::before {
-      border-left-color: $popover-arrow-outer-color-alt;
-    }
-
-    &::after {
-      border-left-color: $popover-arrow-color-alt;
-    }
-  }
-}
-
-// ***NOTE***: Do not use @extend as that would extend the base class and the dark class
-
-// Offset the popover to account for the popover arrow
-.popover-header {
-  color: $popover-header-color-alt;
-  background-color: $popover-header-bg-alt;
-  border-bottom: $popover-border-width solid $popover-border-color-alt;
-}
-
-.popover-body {
-  color: $popover-body-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_progress.scss b/src/scss/bootstrap-dark/_progress.scss
deleted file mode 100644
index 3ea0e1e3a..000000000
--- a/src/scss/bootstrap-dark/_progress.scss
+++ /dev/null
@@ -1,14 +0,0 @@
-.progress {
-  background-color: $progress-bg-alt;
-  @include box-shadow($progress-box-shadow-alt);
-}
-
-.progress-bar {
-  color: $progress-bar-color-alt;
-  background-color: $progress-bar-bg-alt;
-}
-
-.progress-bar-striped {
-  // THIS DOES NOTHING
-  // @include gradient-striped();
-}
diff --git a/src/scss/bootstrap-dark/_reboot.scss b/src/scss/bootstrap-dark/_reboot.scss
deleted file mode 100644
index 6ae005b41..000000000
--- a/src/scss/bootstrap-dark/_reboot.scss
+++ /dev/null
@@ -1,91 +0,0 @@
-// xxxstylelint-disable declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
-
-
-// Reboot
-//
-// Normalization of HTML elements, manually forked from Normalize.css ... (see core `_reboot.scss` file)
-// Normalize is licensed MIT. https://github.com/necolas/normalize.css
-
-
-// Body
-
-body {
-  color: var(--#{$variable-prefix}body-color-alt);
-  background-color: var(--#{$variable-prefix}body-bg-alt); // 2
-}
-
-
-// Content grouping
-
-hr {
-  color: $hr-color-alt; // 1
-  // background-color: currentcolor;
-  opacity: $hr-opacity-alt;
-}
-
-
-// Typography
-
-%heading {
-  color: $headings-color-alt;
-}
-
-
-// Mark
-
-mark {
-  background-color: $mark-bg-alt;
-}
-
-
-// Links
-
-a {
-  color: $link-color-alt;
-
-  &:hover {
-    color: $link-hover-color-alt;
-  }
-}
-
-a:not([href]):not([class]) {
-  &,
-  &:hover {
-    color: inherit;
-  }
-}
-
-
-// Code
-
-pre {
-  color: $pre-color-alt;
-
-  // Account for some code outputs that place code tags in pre tags
-  code {
-    color: inherit;
-  }
-}
-
-code {
-  color: $code-color-alt;
-
-  // Streamline the style when inside anchors to avoid broken underline and more
-  a > & {
-    color: inherit;
-  }
-}
-
-kbd {
-  color: $kbd-color-alt;
-  background-color: $kbd-bg-alt;
-}
-
-
-// Tables
-//
-// Prevent double borders
-
-caption {
-  color: $table-caption-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_root.scss b/src/scss/bootstrap-dark/_root.scss
deleted file mode 100644
index 845db5d81..000000000
--- a/src/scss/bootstrap-dark/_root.scss
+++ /dev/null
@@ -1,31 +0,0 @@
-:root {
-  // Custom variable values only support SassScript inside `#{}`.
-  @each $color, $value in $colors-alt {
-    --#{$variable-prefix}#{$color}: #{$value};
-  }
-
-  @each $color, $value in $grays-alt {
-    --#{$variable-prefix}gray-#{$color}: #{$value};
-  }
-
-  @each $color, $value in $theme-colors-alt {
-    --#{$variable-prefix}#{$color}: #{$value};
-  }
-
-  @each $color, $value in $theme-colors-rgb-alt {
-    --#{$variable-prefix}#{$color}-rgb: #{$value};
-  }
-
-  --#{$variable-prefix}white-rgb: #{to-rgb($white-alt)};
-  --#{$variable-prefix}black-rgb: #{to-rgb($black-alt)};
-  --#{$variable-prefix}body-rgb: #{to-rgb($body-color-alt)};
-
-  // root and body
-
-  --#{$variable-prefix}body-color: #{$body-color-alt};
-  --#{$variable-prefix}body-bg: #{$body-bg-alt};
-
-  // ?
-
-  --#{$variable-prefix}gradient: #{$gradient-alt};
-}
diff --git a/src/scss/bootstrap-dark/_tables.scss b/src/scss/bootstrap-dark/_tables.scss
deleted file mode 100644
index 9bc523b9a..000000000
--- a/src/scss/bootstrap-dark/_tables.scss
+++ /dev/null
@@ -1,66 +0,0 @@
-//
-// Basic Bootstrap table
-//
-
-.table {
-  --#{$variable-prefix}table-bg: #{$table-bg-alt};
-  --#{$variable-prefix}table-accent-bg: #{$table-accent-bg-alt};
-  --#{$variable-prefix}table-striped-color: #{$table-striped-color-alt};
-  --#{$variable-prefix}table-striped-bg: #{$table-striped-bg-alt};
-  --#{$variable-prefix}table-active-color: #{$table-active-color-alt};
-  --#{$variable-prefix}table-active-bg: #{$table-active-bg-alt};
-  --#{$variable-prefix}table-hover-color: #{$table-hover-color-alt};
-  --#{$variable-prefix}table-hover-bg: #{$table-hover-bg-alt};
-
-  color: $table-color-alt;
-  border-color: $table-border-color-alt;
-
-  // DONT NEED TO DARK, CSS VARS TAKES CARE OF THIS.
-  // Target th & td
-  // xstylelint-disable-next-line selector-max-universal
-  // > :not(caption) > * > * {
-  //   background-color: var(--#{$variable-prefix}table-bg);
-  //   box-shadow: inset 0 0 0 9999px var(--#{$variable-prefix}table-accent-bg);
-  // }
-
-  // Highlight border color between thead, tbody and tfoot.
-  > :not(:last-child) > :last-child > * {
-    border-bottom-color: $table-group-separator-color-alt;
-  }
-}
-
-
-// Zebra-striping
-
-// DONT NEED TO DARK, CSS VARS TAKES CARE OF THIS.
-// .table-striped {
-//   > tbody > tr:nth-of-type(#{$table-striped-order}) {
-//     --#{$variable-prefix}table-accent-bg: var(--#{$variable-prefix}table-striped-bg);
-//     color: var(--#{$variable-prefix}table-striped-color);
-//   }
-// }
-
-// Active table
-
-// DONT NEED TO DARK, CSS VARS TAKES CARE OF THIS.
-// .table-active {
-//   --#{$variable-prefix}table-accent-bg: var(--#{$variable-prefix}table-active-bg);
-//   color: var(--#{$variable-prefix}table-active-color);
-// }
-
-// Hover effect
-
-// DONT NEED TO DARK, CSS VARS TAKES CARE OF THIS.
-// .table-hover {
-//   > tbody > tr:hover {
-//     --#{$variable-prefix}table-accent-bg: var(--#{$variable-prefix}table-hover-bg);
-//     color: var(--#{$variable-prefix}table-hover-color);
-//   }
-// }
-
-
-// Table variants
-
-@each $color, $value in $table-variants-alt {
-  @include table-variant-alt($color, $value);
-}
diff --git a/src/scss/bootstrap-dark/_toasts.scss b/src/scss/bootstrap-dark/_toasts.scss
deleted file mode 100644
index 7f643b44b..000000000
--- a/src/scss/bootstrap-dark/_toasts.scss
+++ /dev/null
@@ -1,17 +0,0 @@
-.toast {
-  color: $toast-color-alt;
-  background-color: $toast-background-color-alt;
-  border: $toast-border-width solid $toast-border-color-alt;
-  box-shadow: $toast-box-shadow-alt;
-
-  //// DO I NEED THIS?
-  // &.showing {
-  //   opacity: 0;
-  // }
-}
-
-.toast-header {
-  color: $toast-header-color-alt;
-  background-color: $toast-header-background-color-alt;
-  border-bottom: $toast-border-width solid $toast-header-border-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_tooltip.scss b/src/scss/bootstrap-dark/_tooltip.scss
deleted file mode 100644
index 9816f6b21..000000000
--- a/src/scss/bootstrap-dark/_tooltip.scss
+++ /dev/null
@@ -1,50 +0,0 @@
-// Base class
-.tooltip {
-  opacity: 0;
-
-  &.show { opacity: $tooltip-opacity-alt; }
-}
-
-.bs-tooltip-top,
-.bs-tooltip-auto[data-popper-placement^="top"] {
-  .tooltip-arrow {
-    &::before {
-      border-top-color: $tooltip-arrow-color-alt;
-    }
-  }
-}
-
-.bs-tooltip-end,
-.bs-tooltip-auto[data-popper-placement^="right"] {
-  .tooltip-arrow {
-    &::before {
-      border-right-color: $tooltip-arrow-color-alt;
-    }
-  }
-}
-
-.bs-tooltip-bottom,
-.bs-tooltip-auto[data-popper-placement^="bottom"] {
-  .tooltip-arrow {
-    &::before {
-      border-bottom-color: $tooltip-arrow-color-alt;
-    }
-  }
-}
-
-.bs-tooltip-start,
-.bs-tooltip-auto[data-popper-placement^="left"] {
-  .tooltip-arrow {
-    &::before {
-      border-left-color: $tooltip-arrow-color-alt;
-    }
-  }
-}
-
-// ***NOTE***: Do not use @extend as that would extend the base class and the dark class
-
-// Wrapper for the tooltip content
-.tooltip-inner {
-  color: $tooltip-color-alt;
-  background-color: $tooltip-bg-alt;
-}
diff --git a/src/scss/bootstrap-dark/_type.scss b/src/scss/bootstrap-dark/_type.scss
deleted file mode 100644
index 3bb437c5f..000000000
--- a/src/scss/bootstrap-dark/_type.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-//
-// Misc
-//
-
-.blockquote-footer {
-  color: $blockquote-footer-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/_utilities.scss b/src/scss/bootstrap-dark/_utilities.scss
deleted file mode 100644
index 403547710..000000000
--- a/src/scss/bootstrap-dark/_utilities.scss
+++ /dev/null
@@ -1,90 +0,0 @@
-// Utilities
-
-$utilities-alt: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$utilities-alt: map-merge(
-  (
-    "shadow": (
-      property: box-shadow,
-      class: shadow,
-      values: (
-        null: $box-shadow-alt,
-        sm: $box-shadow-sm-alt,
-        lg: $box-shadow-lg-alt,
-      )
-    ),
-    "border": (
-      property: border,
-      values: (
-        null: $border-width solid $border-color-alt,
-      )
-    ),
-    "border-top": (
-      property: border-top,
-      values: (
-        null: $border-width solid $border-color-alt,
-      )
-    ),
-    "border-end": (
-      property: border-right,
-      class: border-end,
-      values: (
-        null: $border-width solid $border-color-alt,
-      )
-    ),
-    "border-bottom": (
-      property: border-bottom,
-      values: (
-        null: $border-width solid $border-color-alt,
-      )
-    ),
-    "border-start": (
-      property: border-left,
-      class: border-start,
-      values: (
-        null: $border-width solid $border-color-alt,
-      )
-    ),
-    "border-color": (
-      property: border-color,
-      class: border,
-      values: map-merge(
-        $theme-colors-alt,
-        (
-          "white": $white-alt,
-          "black": $black-alt
-        )
-      )
-    ),
-    // Text
-    // DON'T NEED TO DARK, CSS VARS TAKES CARE OF THIS.
-    // "gradient": (
-    //   property: background-image,
-    //   class: bg,
-    //   values: (gradient: var(--#{$variable-prefix}gradient))
-    // )
-    "color": (
-      property: color,
-      class: text,
-      values: map-merge(
-        $utilities-text-colors-alt,
-        (
-          "muted": $text-muted-alt,
-          "white-50": rgba($white-alt, .5),
-          "black-50": rgba($black-alt, .5)
-        )
-      )
-    ),
-    "background-color": (
-      property: background-color,
-      class: bg,
-      values: map-merge(
-        $utilities-bg-colors-alt,
-        (
-          "black": $black-alt
-        )
-      )
-    )
-  ),
-  $utilities-alt
-);
diff --git a/src/scss/bootstrap-dark/_variables-alt.scss b/src/scss/bootstrap-dark/_variables-alt.scss
deleted file mode 100644
index 0818ef867..000000000
--- a/src/scss/bootstrap-dark/_variables-alt.scss
+++ /dev/null
@@ -1,916 +0,0 @@
-// Alternate Variables (for use in Dark Mode variant)
-
-// Color system
-// ______________________________________
-
-$default-color-scheme: light !default;
-
-$color-schemes: (
-  light,
-  dark
-) !default;
-
-// items marked //** from https://bootswatch.com/darkly/
-// items marked //~~ from https://uxdesign.cc/dark-mode-ui-design-the-definitive-guide-part-1-color-53dcfaea5129
-
-$white-alt:    #fafafa !default;
-$gray-100-alt: #e1e1e1 !default;  //~~
-$gray-200-alt: #cfcfcf !default;  //~~
-$gray-300-alt: #b1b1b1 !default;  //~~
-$gray-400-alt: #9e9e9e !default;  //~~
-$gray-500-alt: #7e7e7e !default;  //~~
-$gray-600-alt: #626262 !default;  //~~
-$gray-700-alt: #515151 !default;  //~~
-$gray-800-alt: #3b3b3b !default;  //~~
-$gray-900-alt: #222 !default;  //~~
-$black-alt:    #111 !default;  //~~
-
-// fusv-disable
-$grays-alt: (
-  "100": $gray-100-alt,
-  "200": $gray-200-alt,
-  "300": $gray-300-alt,
-  "400": $gray-400-alt,
-  "500": $gray-500-alt,
-  "600": $gray-600-alt,
-  "700": $gray-700-alt,
-  "800": $gray-800-alt,
-  "900": $gray-900-alt
-) !default;
-// fusv-enable
-
-$blue-alt:    #375a7f !default;
-$indigo-alt:  #673ab7 !default;  //~~
-$purple-alt:  #654ea3 !default;  // Panatone CotY 2018
-$pink-alt:    #e83e8c !default;
-$red-alt:     #e74c3c !default;  //**
-$orange-alt:  #fd7e14 !default;
-$yellow-alt:  #f39c12 !default;  //**
-$green-alt:   #00bc8c !default;  //**
-$teal-alt:    #45b5aa !default;  // Panatone CotY 2010
-$cyan-alt:    #17a2b8 !default;
-
-$colors-alt: (
-  "blue":       $blue-alt,
-  "indigo":     $indigo-alt,
-  "purple":     $purple-alt,
-  "pink":       $pink-alt,
-  "red":        $red-alt,
-  "orange":     $orange-alt,
-  "yellow":     $yellow-alt,
-  "green":      $green-alt,
-  "teal":       $teal-alt,
-  "cyan":       $cyan-alt,
-  "white":      $white-alt,
-  "black":      $black-alt,
-  "gray":       #7e7e7e,  // $gray-600,
-  "gray-dark":  #121212  //$gray-800
-) !default;
-
-$primary-alt:       $blue-alt !default;
-$secondary-alt:     $gray-600-alt !default;
-$success-alt:       $green-alt !default;
-$info-alt:          $cyan-alt !default;
-$warning-alt:       $yellow-alt !default;
-$danger-alt:        $red-alt !default;
-$light-alt:         $gray-400-alt !default;
-$dark-alt:          $gray-800-alt !default;
-
-$theme-colors-alt: (
-  "primary":    $primary-alt,
-  "secondary":  $secondary-alt,
-  "success":    $success-alt,
-  "info":       $info-alt,
-  "warning":    $warning-alt,
-  "danger":     $danger-alt,
-  "light":      $light-alt,
-  "dark":       $dark-alt
-) !default;
-
-$theme-colors-rgb-alt: map-loop($theme-colors-alt, to-rgb, "$value") !default;
-
-// The contrast ratio to reach against white, to determine if color changes from "light" to "dark". Acceptable values for WCAG 2.0 are 3, 4.5 and 7.
-// See https://www.w3.org/TR/WCAG20/#visual-audio-contrast-contrast
-$min-contrast-ratio-alt:   2.5 !default;
-
-$color-contrast-dark-alt:      $black-alt !default;
-$color-contrast-light-alt:     $white-alt !default;
-
-// fusv-disable
-$blue-100-alt: tint-color($blue-alt, 80%) !default;
-$blue-200-alt: tint-color($blue-alt, 60%) !default;
-$blue-300-alt: tint-color($blue-alt, 40%) !default;
-$blue-400-alt: tint-color($blue-alt, 20%) !default;
-$blue-500-alt: $blue-alt !default;
-$blue-600-alt: shade-color($blue-alt, 20%) !default;
-$blue-700-alt: shade-color($blue-alt, 40%) !default;
-$blue-800-alt: shade-color($blue-alt, 60%) !default;
-$blue-900-alt: shade-color($blue-alt, 80%) !default;
-
-$indigo-100-alt: tint-color($indigo-alt, 80%) !default;
-$indigo-200-alt: tint-color($indigo-alt, 60%) !default;
-$indigo-300-alt: tint-color($indigo-alt, 40%) !default;
-$indigo-400-alt: tint-color($indigo-alt, 20%) !default;
-$indigo-500-alt: $indigo-alt !default;
-$indigo-600-alt: shade-color($indigo-alt, 20%) !default;
-$indigo-700-alt: shade-color($indigo-alt, 40%) !default;
-$indigo-800-alt: shade-color($indigo-alt, 60%) !default;
-$indigo-900-alt: shade-color($indigo-alt, 80%) !default;
-
-$purple-100-alt: tint-color($purple-alt, 80%) !default;
-$purple-200-alt: tint-color($purple-alt, 60%) !default;
-$purple-300-alt: tint-color($purple-alt, 40%) !default;
-$purple-400-alt: tint-color($purple-alt, 20%) !default;
-$purple-500-alt: $purple-alt !default;
-$purple-600-alt: shade-color($purple-alt, 20%) !default;
-$purple-700-alt: shade-color($purple-alt, 40%) !default;
-$purple-800-alt: shade-color($purple-alt, 60%) !default;
-$purple-900-alt: shade-color($purple-alt, 80%) !default;
-
-$pink-100-alt: tint-color($pink-alt, 80%) !default;
-$pink-200-alt: tint-color($pink-alt, 60%) !default;
-$pink-300-alt: tint-color($pink-alt, 40%) !default;
-$pink-400-alt: tint-color($pink-alt, 20%) !default;
-$pink-500-alt: $pink-alt !default;
-$pink-600-alt: shade-color($pink-alt, 20%) !default;
-$pink-700-alt: shade-color($pink-alt, 40%) !default;
-$pink-800-alt: shade-color($pink-alt, 60%) !default;
-$pink-900-alt: shade-color($pink-alt, 80%) !default;
-
-$red-100-alt: tint-color($red-alt, 80%) !default;
-$red-200-alt: tint-color($red-alt, 60%) !default;
-$red-300-alt: tint-color($red-alt, 40%) !default;
-$red-400-alt: tint-color($red-alt, 20%) !default;
-$red-500-alt: $red-alt !default;
-$red-600-alt: shade-color($red-alt, 20%) !default;
-$red-700-alt: shade-color($red-alt, 40%) !default;
-$red-800-alt: shade-color($red-alt, 60%) !default;
-$red-900-alt: shade-color($red-alt, 80%) !default;
-
-$orange-100-alt: tint-color($orange-alt, 80%) !default;
-$orange-200-alt: tint-color($orange-alt, 60%) !default;
-$orange-300-alt: tint-color($orange-alt, 40%) !default;
-$orange-400-alt: tint-color($orange-alt, 20%) !default;
-$orange-500-alt: $orange-alt !default;
-$orange-600-alt: shade-color($orange-alt, 20%) !default;
-$orange-700-alt: shade-color($orange-alt, 40%) !default;
-$orange-800-alt: shade-color($orange-alt, 60%) !default;
-$orange-900-alt: shade-color($orange-alt, 80%) !default;
-
-$yellow-100-alt: tint-color($yellow-alt, 80%) !default;
-$yellow-200-alt: tint-color($yellow-alt, 60%) !default;
-$yellow-300-alt: tint-color($yellow-alt, 40%) !default;
-$yellow-400-alt: tint-color($yellow-alt, 20%) !default;
-$yellow-500-alt: $yellow-alt !default;
-$yellow-600-alt: shade-color($yellow-alt, 20%) !default;
-$yellow-700-alt: shade-color($yellow-alt, 40%) !default;
-$yellow-800-alt: shade-color($yellow-alt, 60%) !default;
-$yellow-900-alt: shade-color($yellow-alt, 80%) !default;
-
-$green-100-alt: tint-color($green-alt, 80%) !default;
-$green-200-alt: tint-color($green-alt, 60%) !default;
-$green-300-alt: tint-color($green-alt, 40%) !default;
-$green-400-alt: tint-color($green-alt, 20%) !default;
-$green-500-alt: $green-alt !default;
-$green-600-alt: shade-color($green-alt, 20%) !default;
-$green-700-alt: shade-color($green-alt, 40%) !default;
-$green-800-alt: shade-color($green-alt, 60%) !default;
-$green-900-alt: shade-color($green-alt, 80%) !default;
-
-$teal-100-alt: tint-color($teal-alt, 80%) !default;
-$teal-200-alt: tint-color($teal-alt, 60%) !default;
-$teal-300-alt: tint-color($teal-alt, 40%) !default;
-$teal-400-alt: tint-color($teal-alt, 20%) !default;
-$teal-500-alt: $teal-alt !default;
-$teal-600-alt: shade-color($teal-alt, 20%) !default;
-$teal-700-alt: shade-color($teal-alt, 40%) !default;
-$teal-800-alt: shade-color($teal-alt, 60%) !default;
-$teal-900-alt: shade-color($teal-alt, 80%) !default;
-
-$cyan-100-alt: tint-color($cyan-alt, 80%) !default;
-$cyan-200-alt: tint-color($cyan-alt, 60%) !default;
-$cyan-300-alt: tint-color($cyan-alt, 40%) !default;
-$cyan-400-alt: tint-color($cyan-alt, 20%) !default;
-$cyan-500-alt: $cyan-alt !default;
-$cyan-600-alt: shade-color($cyan-alt, 20%) !default;
-$cyan-700-alt: shade-color($cyan-alt, 40%) !default;
-$cyan-800-alt: shade-color($cyan-alt, 60%) !default;
-$cyan-900-alt: shade-color($cyan-alt, 80%) !default;
-
-$blues-alt: (
-  "blue-100": $blue-100-alt,
-  "blue-200": $blue-200-alt,
-  "blue-300": $blue-300-alt,
-  "blue-400": $blue-400-alt,
-  "blue-500": $blue-500-alt,
-  "blue-600": $blue-600-alt,
-  "blue-700": $blue-700-alt,
-  "blue-800": $blue-800-alt,
-  "blue-900": $blue-900-alt
-) !default;
-
-$indigos-alt: (
-  "indigo-100": $indigo-100-alt,
-  "indigo-200": $indigo-200-alt,
-  "indigo-300": $indigo-300-alt,
-  "indigo-400": $indigo-400-alt,
-  "indigo-500": $indigo-500-alt,
-  "indigo-600": $indigo-600-alt,
-  "indigo-700": $indigo-700-alt,
-  "indigo-800": $indigo-800-alt,
-  "indigo-900": $indigo-900-alt
-) !default;
-
-$purples-alt: (
-  "purple-100": $purple-200-alt,
-  "purple-200": $purple-100-alt,
-  "purple-300": $purple-300-alt,
-  "purple-400": $purple-400-alt,
-  "purple-500": $purple-500-alt,
-  "purple-600": $purple-600-alt,
-  "purple-700": $purple-700-alt,
-  "purple-800": $purple-800-alt,
-  "purple-900": $purple-900-alt
-) !default;
-
-$pinks-alt: (
-  "pink-100": $pink-100-alt,
-  "pink-200": $pink-200-alt,
-  "pink-300": $pink-300-alt,
-  "pink-400": $pink-400-alt,
-  "pink-500": $pink-500-alt,
-  "pink-600": $pink-600-alt,
-  "pink-700": $pink-700-alt,
-  "pink-800": $pink-800-alt,
-  "pink-900": $pink-900-alt
-) !default;
-
-$reds-alt: (
-  "red-100": $red-100-alt,
-  "red-200": $red-200-alt,
-  "red-300": $red-300-alt,
-  "red-400": $red-400-alt,
-  "red-500": $red-500-alt,
-  "red-600": $red-600-alt,
-  "red-700": $red-700-alt,
-  "red-800": $red-800-alt,
-  "red-900": $red-900-alt
-) !default;
-
-$oranges-alt: (
-  "orange-100": $orange-100-alt,
-  "orange-200": $orange-200-alt,
-  "orange-300": $orange-300-alt,
-  "orange-400": $orange-400-alt,
-  "orange-500": $orange-500-alt,
-  "orange-600": $orange-600-alt,
-  "orange-700": $orange-700-alt,
-  "orange-800": $orange-800-alt,
-  "orange-900": $orange-900-alt
-) !default;
-
-$yellows-alt: (
-  "yellow-100": $yellow-100-alt,
-  "yellow-200": $yellow-200-alt,
-  "yellow-300": $yellow-300-alt,
-  "yellow-400": $yellow-400-alt,
-  "yellow-500": $yellow-500-alt,
-  "yellow-600": $yellow-600-alt,
-  "yellow-700": $yellow-700-alt,
-  "yellow-800": $yellow-800-alt,
-  "yellow-900": $yellow-900-alt
-) !default;
-
-$greens-alt: (
-  "green-100": $green-100-alt,
-  "green-200": $green-200-alt,
-  "green-300": $green-300-alt,
-  "green-400": $green-400-alt,
-  "green-500": $green-500-alt,
-  "green-600": $green-600-alt,
-  "green-700": $green-700-alt,
-  "green-800": $green-800-alt,
-  "green-900": $green-900-alt
-) !default;
-
-$teals-alt: (
-  "teal-100": $teal-100-alt,
-  "teal-200": $teal-200-alt,
-  "teal-300": $teal-300-alt,
-  "teal-400": $teal-400-alt,
-  "teal-500": $teal-500-alt,
-  "teal-600": $teal-600-alt,
-  "teal-700": $teal-700-alt,
-  "teal-800": $teal-800-alt,
-  "teal-900": $teal-900-alt
-) !default;
-
-$cyans-alt: (
-  "cyan-100": $cyan-100-alt,
-  "cyan-200": $cyan-200-alt,
-  "cyan-300": $cyan-300-alt,
-  "cyan-400": $cyan-400-alt,
-  "cyan-500": $cyan-500-alt,
-  "cyan-600": $cyan-600-alt,
-  "cyan-700": $cyan-700-alt,
-  "cyan-800": $cyan-800-alt,
-  "cyan-900": $cyan-900-alt
-) !default;
-// fusv-enable
-
-// Gradient
-// ______________________________________
-// The gradient which is added to components if `$enable-gradients` is `true`
-// This gradient is also added to elements with `.bg-gradient`
-$gradient-alt: linear-gradient(180deg, rgba($black-alt, .15), rgba($black-alt, 0)) !default;
-
-
-// Body
-// ______________________________________
-// Settings for the `<body>` element.
-
-$body-bg-alt:                   $gray-900-alt !default;  // $white !default;
-$body-color-alt:                $gray-100-alt !default;  // $gray-900 !default;
-
-// Utilities maps
-// ______________________________________
-
-$utilities-colors-alt: map-merge(
-  $theme-colors-rgb-alt,
-  (
-    "black": to-rgb($black-alt),
-    "white": to-rgb($white-alt),
-    "body":  to-rgb($body-color-alt)
-  )
-) !default;
-
-$utilities-text-colors-alt: map-loop($utilities-colors-alt, rgba-css-var, "$key", "text") !default;
-
-$utilities-bg-colors-alt: map-loop($utilities-colors-alt, rgba-css-var, "$key", "bg") !default;
-
-
-// Links
-// ______________________________________
-// Style anchor elements.
-
-$link-color-alt:                              shift-color($primary-alt, -15%) !default;
-$link-shade-percentage-alt:                   20% !default;  // TODO: should be -20%;
-$link-hover-color-alt:                        tint-color($link-color-alt, $link-shade-percentage-alt) !default;  // TODO: shift-color
-
-
-// Components
-// ______________________________________
-// Define common padding and border radius sizes and more.
-
-$border-color-alt:                $gray-700-alt !default;
-
-$box-shadow-alt:                  0 .5rem 1rem rgba($black-alt, .15) !default;
-$box-shadow-sm-alt:               0 .125rem .25rem rgba($black-alt, .075) !default;
-$box-shadow-lg-alt:               0 1rem 3rem rgba($black-alt, .175) !default;
-$box-shadow-inset-alt:            inset 0 1px 2px rgba($black-alt, .075) !default;
-
-$component-active-color-alt:      $white-alt !default;
-$component-active-bg-alt:         $primary-alt !default;
-
-
-// Typography
-// ______________________________________
-// Font, line-height, and color for body text, headings, and more.
-
-
-$headings-color-alt:              null !default;
-
-$text-muted-alt:                  $gray-400-alt !default;
-
-$blockquote-footer-color-alt:     $gray-600-alt !default;
-
-$hr-color-alt:                    $white-alt !default;
-$hr-opacity-alt:                  .1 !default;
-
-$mark-bg-alt:                     rgba($yellow-alt, .5) !default;
-
-
-// Tables
-// ______________________________________
-// Customizes the `.table` component with basic values, each used across all table variations.
-
-$table-color-alt:                 $body-color-alt !default;
-$table-bg-alt:                    transparent !default;
-$table-accent-bg-alt:             transparent !default;
-
-$table-striped-color-alt:         $table-color-alt !default;
-$table-striped-bg-factor-alt:     .05 !default;
-$table-striped-bg-alt:            rgba($white-alt, $table-striped-bg-factor-alt) !default;
-
-$table-active-color-alt:          $table-color-alt !default;
-$table-active-bg-factor-alt:      .1 !default;
-$table-active-bg-alt:             rgba($white-alt, $table-active-bg-factor-alt) !default;
-
-$table-hover-color-alt:           $table-color-alt !default;
-$table-hover-bg-factor-alt:       .075 !default;
-$table-hover-bg-alt:              rgba($white-alt, $table-hover-bg-factor-alt) !default;
-
-$table-border-factor-alt:         .1 !default;
-$table-border-color-alt:          $border-color-alt !default;
-
-$table-group-separator-color-alt: currentcolor !default;
-
-$table-caption-color-alt:         $text-muted-alt !default;
-
-$table-bg-scale-alt:              50% !default;
-
-$table-variants-alt: (
-  "primary":    shift-color($primary-alt, $table-bg-scale-alt),
-  "secondary":  shift-color($secondary-alt, $table-bg-scale-alt),
-  "success":    shift-color($success-alt, $table-bg-scale-alt),
-  "info":       shift-color($info-alt, $table-bg-scale-alt),
-  "warning":    shift-color($warning-alt, $table-bg-scale-alt),
-  "danger":     shift-color($danger-alt, $table-bg-scale-alt),
-  "light":      $light-alt,
-  "dark":       $dark-alt,
-) !default;
-
-
-// Buttons + Forms
-// ______________________________________
-// Shared variables that are reassigned to `$input-` and `$btn-` specific variables.
-
-$input-btn-focus-color-opacity-alt: .25 !default;
-$input-btn-focus-color-alt:         rgba($component-active-bg-alt, $input-btn-focus-color-opacity-alt) !default;
-$input-btn-focus-blur-alt:          0 !default;
-$input-btn-focus-box-shadow-alt:    0 0 $input-btn-focus-blur-alt $input-btn-focus-width $input-btn-focus-color-alt !default;
-
-
-// Buttons
-// ______________________________________
-// For each of Bootstrap's buttons, define text, background, and border color.
-
-$btn-box-shadow-alt:              inset 0 1px 0 rgba($white-alt, .15), 0 1px 1px rgba($black-alt, .075) !default;
-$btn-focus-box-shadow-alt:        $input-btn-focus-box-shadow-alt !default;
-$btn-disabled-opacity-alt:        .65 !default;
-$btn-active-box-shadow-alt:       inset 0 3px 5px rgba($black-alt, .125) !default;
-
-$btn-link-color-alt:              $link-color-alt !default;
-$btn-link-hover-color-alt:        $link-hover-color-alt !default;
-$btn-link-disabled-color-alt:     $gray-600-alt !default;
-
-$btn-hover-bg-shade-amount-alt:       15% !default;
-$btn-hover-bg-tint-amount-alt:        15% !default;
-$btn-hover-border-shade-amount-alt:   20% !default;
-$btn-hover-border-tint-amount-alt:    10% !default;
-$btn-active-bg-shade-amount-alt:      20% !default;
-$btn-active-bg-tint-amount-alt:       20% !default;
-$btn-active-border-shade-amount-alt:  25% !default;
-$btn-active-border-tint-amount-alt:   10% !default;
-
-
-// Forms
-// ______________________________________
-
-$form-text-color-alt:                       $text-muted-alt !default;
-
-$form-label-color-alt:                      null !default;
-
-$input-bg-alt:                              $body-bg-alt !default;
-$input-disabled-bg-alt:                     $gray-900-alt !default;
-$input-disabled-border-color-alt:           null !default;
-
-$input-color-alt:                           $gray-300-alt !default;
-$input-border-color-alt:                    $gray-700-alt !default;
-$input-box-shadow-alt:                      $box-shadow-inset-alt !default;
-
-$input-focus-bg-alt:                        $input-bg-alt !default;
-$input-focus-border-color-alt:              tint-color($component-active-bg-alt, 50%) !default;
-$input-focus-color-alt:                     $input-color-alt !default;
-$input-focus-box-shadow-alt:                $input-btn-focus-box-shadow-alt !default;
-
-$input-placeholder-color-alt:               mix($gray-600-alt, $gray-700-alt, 50%) !default;
-$input-plaintext-color-alt:                 $body-color-alt !default;
-
-$form-check-label-color-alt:                  null !default;
-
-$form-check-input-active-filter-alt:          brightness(90%) !default;  // TODO: test
-
-$form-check-input-bg-alt:                     $input-bg-alt !default;
-$form-check-input-border-alt:                 1px solid rgba($white, .25) !default;
-$form-check-input-focus-border-alt:           $input-focus-border-color-alt !default;
-$form-check-input-focus-box-shadow-alt:       $input-btn-focus-box-shadow-alt !default;
-
-$form-check-input-checked-color-alt:          $component-active-color-alt !default;
-$form-check-input-checked-bg-color-alt:       $component-active-bg-alt !default;
-$form-check-input-checked-border-color-alt:   $form-check-input-checked-bg-color-alt !default;
-$form-check-input-checked-bg-image-alt:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path fill='none' stroke='#{$form-check-input-checked-color-alt}' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/></svg>") !default;
-$form-check-radio-checked-bg-image-alt:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='2' fill='#{$form-check-input-checked-color-alt}'/></svg>") !default;
-
-$form-check-input-indeterminate-color-alt:          $component-active-color-alt !default;
-$form-check-input-indeterminate-bg-color-alt:       $component-active-bg-alt !default;
-$form-check-input-indeterminate-border-color-alt:   $form-check-input-indeterminate-bg-color-alt !default;
-$form-check-input-indeterminate-bg-image-alt:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path fill='none' stroke='#{$form-check-input-indeterminate-color-alt}' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10h8'/></svg>") !default;
-
-$form-check-input-disabled-opacity-alt:        .5 !default;
-$form-check-label-disabled-opacity-alt:        $form-check-input-disabled-opacity-alt !default;
-$form-check-btn-check-disabled-opacity-alt:    $btn-disabled-opacity-alt !default;
-
-$form-switch-color-alt:               rgba(255, 255, 255, .25) !default;
-$form-switch-bg-image-alt:            url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='3' fill='#{$form-switch-color-alt}'/></svg>") !default;
-
-$form-switch-focus-color-alt:         $input-focus-border-color-alt !default;
-$form-switch-focus-bg-image-alt:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='3' fill='#{$form-switch-focus-color-alt}'/></svg>") !default;
-
-$form-switch-checked-color-alt:       $component-active-color-alt !default;
-$form-switch-checked-bg-image-alt:    url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'><circle r='3' fill='#{$form-switch-checked-color-alt}'/></svg>") !default;
-
-$input-group-addon-color-alt:               $input-color-alt !default;
-$input-group-addon-bg-alt:                  $gray-800-alt !default;
-$input-group-addon-border-color-alt:        $input-border-color-alt !default;
-
-$form-select-color-alt:                 $input-color-alt !default;
-$form-select-disabled-color-alt:        null !default;
-$form-select-bg-alt:                    $input-bg-alt !default;
-$form-select-disabled-bg-alt:           $gray-800-alt !default;
-$form-select-disabled-border-color-alt: $input-disabled-border-color-alt !default;
-$form-select-indicator-color-alt:       $gray-200-alt !default;
-$form-select-indicator-alt:             url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='#{$form-select-indicator-color-alt}' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/></svg>") !default;
-
-$form-select-border-color-alt:        $input-border-color-alt !default;
-$form-select-box-shadow-alt:          $box-shadow-inset-alt !default;
-
-$form-select-focus-border-color-alt:  $input-focus-border-color-alt !default;
-$form-select-focus-box-shadow-alt:    0 0 0 $form-select-focus-width $input-btn-focus-color-alt !default;
-
-$form-range-track-bg-alt:             $gray-700-alt !default;
-$form-range-track-box-shadow-alt:     $box-shadow-inset-alt !default;
-
-$form-range-thumb-bg-alt:                      $component-active-bg-alt !default;
-$form-range-thumb-border-alt:                  0 !default;
-$form-range-thumb-box-shadow-alt:              0 .1rem .25rem rgba($black-alt, .1) !default;
-$form-range-thumb-focus-box-shadow-alt:        0 0 0 1px $body-bg-alt, $input-focus-box-shadow-alt !default;
-$form-range-thumb-active-bg-alt:               tint-color($component-active-bg-alt, 70%) !default;
-$form-range-thumb-disabled-bg-alt:             $gray-500-alt !default;
-
-$form-file-button-color-alt:          $input-color-alt !default;
-$form-file-button-bg-alt:             $input-group-addon-bg-alt !default;
-$form-file-button-hover-bg-alt:       shade-color($form-file-button-bg-alt, 5%) !default;
-
-$form-floating-label-opacity-alt:     .65 !default;
-
-
-// Form validation
-// ______________________________________
-
-$form-feedback-valid-color-alt:         $success-alt !default;
-$form-feedback-invalid-color-alt:       $danger-alt !default;
-
-$form-feedback-icon-valid-color-alt:    $form-feedback-valid-color-alt !default;
-$form-feedback-icon-valid-alt:          url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'><path fill='#{$form-feedback-icon-valid-color-alt}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>") !default;
-$form-feedback-icon-invalid-color-alt:  $form-feedback-invalid-color-alt !default;
-$form-feedback-icon-invalid-alt:        url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='#{$form-feedback-icon-invalid-color-alt}'><circle cx='6' cy='6' r='4.5'/><path stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/><circle cx='6' cy='8.2' r='.6' fill='#{$form-feedback-icon-invalid-color}' stroke='none'/></svg>") !default;
-
-$form-validation-states-alt: (
-  "valid": (
-    "color": $form-feedback-valid-color-alt,
-    "icon": $form-feedback-icon-valid-alt
-  ),
-  "invalid": (
-    "color": $form-feedback-invalid-color-alt,
-    "icon": $form-feedback-icon-invalid-alt
-  )
-) !default;
-
-
-// Navs
-// ______________________________________
-
-$nav-link-color-alt:                    $link-color-alt !default;
-$nav-link-hover-color-alt:              $link-hover-color-alt !default;
-$nav-link-disabled-color-alt:           $gray-400-alt !default;
-
-$nav-tabs-border-color-alt:             $gray-700-alt !default;
-$nav-tabs-link-hover-border-color-alt:  $gray-800-alt $gray-800-alt $nav-tabs-border-color-alt !default;
-$nav-tabs-link-active-color-alt:        $gray-300-alt !default;
-$nav-tabs-link-active-bg-alt:           $body-bg-alt !default;
-$nav-tabs-link-active-border-color-alt: $gray-700-alt $gray-700-alt $nav-tabs-link-active-bg-alt !default;
-
-$nav-pills-link-active-color-alt:       $component-active-color-alt !default;
-$nav-pills-link-active-bg-alt:          $component-active-bg-alt !default;
-
-
-// Navbar
-// ______________________________________  // TODO: revisit colors
-
-$navbar-dark-color-alt:                 rgba($white-alt, .55) !default;
-$navbar-dark-hover-color-alt:           rgba($white-alt, .75) !default;
-$navbar-dark-active-color-alt:          $white-alt !default;
-$navbar-dark-disabled-color-alt:        rgba($white-alt, .25) !default;
-$navbar-dark-toggler-icon-bg-alt:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-dark-color-alt}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
-$navbar-dark-toggler-border-color-alt:  rgba($white-alt, .1) !default;
-
-$navbar-light-color-alt:                rgba($white-alt, .55) !default;
-$navbar-light-hover-color-alt:          rgba($white-alt, .7) !default;
-$navbar-light-active-color-alt:         rgba($white-alt, .9) !default;
-$navbar-light-disabled-color-alt:       rgba($white-alt, .3) !default;
-$navbar-light-toggler-icon-bg-alt:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-light-color-alt}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
-$navbar-light-toggler-border-color-alt: rgba($white-alt, .1) !default;
-
-$navbar-light-brand-color-alt:                $navbar-light-active-color-alt !default;
-$navbar-light-brand-hover-color-alt:          $navbar-light-active-color-alt !default;
-$navbar-dark-brand-color-alt:                 $navbar-dark-active-color-alt !default;
-$navbar-dark-brand-hover-color-alt:           $navbar-dark-active-color-alt !default;
-
-
-// Dropdowns
-// ______________________________________
-// Dropdown menu container and contents.
-
-$dropdown-color-alt:                    $body-color-alt !default;
-$dropdown-bg-alt:                       $black-alt !default;
-$dropdown-border-color-alt:             rgba($white-alt, .15) !default;
-$dropdown-divider-bg-alt:               $dropdown-border-color-alt !default;
-$dropdown-box-shadow-alt:               $box-shadow-alt !default;
-
-$dropdown-link-color-alt:               $gray-100 !default;
-$dropdown-link-hover-color-alt:         shade-color($gray-100, 10%) !default;
-$dropdown-link-hover-bg-alt:            $gray-800 !default;
-
-$dropdown-link-active-color-alt:        $component-active-color-alt !default;
-$dropdown-link-active-bg-alt:           $component-active-bg-alt !default;
-
-$dropdown-link-disabled-color-alt:      $gray-500-alt !default;
-
-$dropdown-header-color-alt:             $gray-400-alt !default;
-
-$dropdown-dark-color-alt:               $gray-700-alt !default;
-$dropdown-dark-bg-alt:                  $gray-200-alt !default;
-$dropdown-dark-border-color-alt:        $dropdown-border-color-alt !default;
-$dropdown-dark-divider-bg-alt:          $dropdown-divider-bg-alt !default;
-$dropdown-dark-box-shadow-alt:          null !default;
-$dropdown-dark-link-color-alt:          $dropdown-dark-color-alt !default;
-$dropdown-dark-link-hover-color-alt:    $black-alt !default;
-$dropdown-dark-link-hover-bg-alt:       rgba($black-alt, .15) !default;
-$dropdown-dark-link-active-color-alt:   $dropdown-link-active-color-alt !default;
-$dropdown-dark-link-active-bg-alt:      $dropdown-link-active-bg-alt !default;
-$dropdown-dark-link-disabled-color-alt: $gray-500-alt !default;
-$dropdown-dark-header-color-alt:        $gray-500-alt !default;
-
-
-// Pagination
-// ______________________________________
-
-$pagination-color-alt:                  $link-color-alt !default;
-$pagination-bg-alt:                     $gray-800-alt !default;
-$pagination-border-color-alt:           $gray-700-alt !default;
-
-$pagination-focus-color-alt:            $link-hover-color-alt !default;
-$pagination-focus-bg-alt:               $gray-800-alt !default;
-$pagination-focus-box-shadow-alt:       $input-btn-focus-box-shadow-alt !default;
-$pagination-focus-outline-alt:          0 !default;  // ???
-
-$pagination-hover-color-alt:            $link-hover-color-alt !default;
-$pagination-hover-bg-alt:               $gray-700-alt !default;
-$pagination-hover-border-color-alt:     mix($gray-700-alt, $gray-700-alt, 50%) !default;
-
-$pagination-active-color-alt:           $component-active-color-alt !default;
-$pagination-active-bg-alt:              $component-active-bg-alt !default;
-$pagination-active-border-color-alt:    $pagination-active-bg-alt !default;
-
-$pagination-disabled-color-alt:         mix($gray-600-alt, $gray-700-alt, 50%) !default;
-$pagination-disabled-bg-alt:            $gray-900-alt !default;
-$pagination-disabled-border-color-alt:  $gray-700-alt !default;
-
-
-// Placeholders
-// ______________________________________
-
-$placeholder-opacity-max-alt:  .5 !default;
-$placeholder-opacity-min-alt:  .2 !default;
-
-
-// Cards
-// ______________________________________
-
-$card-border-color-alt: rgba($white-alt, .125) !default;
-$card-cap-bg-alt:       rgba($white-alt, .03) !default;
-$card-cap-color-alt:    null !default;
-$card-color-alt:        null !default;
-$card-box-shadow-alt:   null !default;
-$card-bg-alt:           $gray-900-alt !default;
-
-
-// Accordion
-// ______________________________________
-
-$accordion-color-alt:                         $body-color-alt !default;
-$accordion-bg-alt:                            $body-bg-alt !default;
-$accordion-border-color-alt:                  rgba($white-alt, .125) !default;
-
-$accordion-button-color-alt:                  $accordion-color-alt !default;
-$accordion-button-bg-alt:                     $accordion-bg-alt !default;
-$accordion-button-active-bg-alt:              shade-color($component-active-bg-alt, 50%) !default;
-$accordion-button-active-color-alt:           tint-color($primary-alt, 40%) !default;
-
-$accordion-button-focus-border-color-alt:     $input-focus-border-color-alt !default;
-$accordion-button-focus-box-shadow-alt:       $btn-focus-box-shadow-alt !default;
-
-$accordion-icon-color-alt:                    $accordion-button-color-alt !default;
-$accordion-icon-active-color-alt:             $accordion-button-active-color-alt !default;
-
-$accordion-button-icon-alt:         url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$accordion-icon-color-alt}'><path fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/></svg>") !default;
-$accordion-button-active-icon-alt:  url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$accordion-icon-active-color-alt}'><path fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/></svg>") !default;
-
-
-// Tooltips
-// ______________________________________
-
-$tooltip-color-alt:                     $black-alt !default;
-$tooltip-bg-alt:                        $white-alt !default;
-$tooltip-opacity-alt:                   .9 !default;
-
-$tooltip-arrow-color-alt:               $tooltip-bg-alt !default;
-
-$form-feedback-tooltip-opacity-alt:       $tooltip-opacity-alt !default;
-
-
-// Popovers
-// ______________________________________
-
-$popover-bg-alt:                        $black-alt !default;
-$popover-border-color-alt:              rgba($white-alt, .2) !default;
-$popover-box-shadow-alt:                $box-shadow-alt !default;
-
-$popover-header-bg-alt:                 tint-color($popover-bg-alt, 6%) !default;
-$popover-header-color-alt:              $headings-color-alt !default;
-
-$popover-body-color-alt:                $body-color-alt !default;
-
-$popover-arrow-color-alt:               $popover-bg-alt !default;
-
-$popover-arrow-outer-color-alt:         fade-in($popover-border-color-alt, .05) !default;
-
-
-// Toasts
-// ______________________________________
-
-$toast-color-alt:                       null !default;
-$toast-background-color-alt:            rgba($black-alt, .85) !default;
-$toast-border-color-alt:                rgba(255, 255, 255, .1) !default;
-$toast-box-shadow-alt:                  $box-shadow-alt !default;
-
-$toast-header-color-alt:                $gray-400-alt !default;
-$toast-header-background-color-alt:     rgba($black-alt, .85) !default;
-$toast-header-border-color-alt:         rgba(255, 255, 255, .05) !default;
-
-
-// Badges
-// ______________________________________
-
-$badge-color-alt:                       $white-alt !default;
-
-
-// Modals
-// ______________________________________
-
-$modal-content-color-alt:               null !default;
-$modal-content-bg-alt:                  mix($gray-800-alt, $gray-900-alt, 50%) !default;
-$modal-content-border-color-alt:        rgba($white-alt, .2) !default;
-$modal-content-box-shadow-xs-alt:       $box-shadow-sm-alt !default;
-$modal-content-box-shadow-sm-up-alt:    $box-shadow-alt !default;
-
-$modal-backdrop-bg-alt:                 $black-alt !default;
-$modal-backdrop-opacity-alt:            .85 !default;
-$modal-header-border-color-alt:         $border-color-alt !default;
-$modal-footer-border-color-alt:         $modal-header-border-color-alt !default;
-
-
-// Alerts
-// ______________________________________
-// Define alert colors, border radius, and padding.
-
-$alert-bg-scale-alt:                    50% !default;
-$alert-border-scale-alt:                40% !default;
-$alert-color-scale-alt:                 -30% !default;
-
-
-// Progress bars
-// ______________________________________
-
-$progress-bg-alt:                       $gray-800-alt !default;
-$progress-box-shadow-alt:               $box-shadow-inset-alt !default;
-$progress-bar-color-alt:                $black-alt !default;
-$progress-bar-bg-alt:                   $primary-alt !default;
-
-
-// List group
-// ______________________________________
-
-$list-group-color-alt:                  $gray-100-alt !default;
-$list-group-bg-alt:                     $gray-900-alt !default;  // $white !default;
-$list-group-border-color-alt:           rgba($white-alt, .125) !default;
-
-$list-group-item-bg-scale-alt:          50% !default;
-$list-group-item-color-scale-alt:       -30% !default;
-
-$list-group-hover-bg-alt:               mix($gray-800-alt, $gray-900-alt, 50%) !default;
-$list-group-active-color-alt:           $component-active-color-alt !default;
-$list-group-active-bg-alt:              $component-active-bg-alt !default;
-$list-group-active-border-color-alt:    $list-group-active-bg-alt !default;
-
-$list-group-disabled-color-alt:         $gray-400-alt !default;
-$list-group-disabled-bg-alt:            $list-group-bg-alt !default;
-
-$list-group-action-color-alt:           $gray-300-alt !default;
-$list-group-action-hover-color-alt:     $list-group-action-color-alt !default;
-
-$list-group-action-active-color-alt:    $body-color-alt !default;
-$list-group-action-active-bg-alt:       $gray-800-alt !default;
-
-
-// Image thumbnails
-// ______________________________________
-
-$thumbnail-bg-alt:                      $body-bg-alt !default;
-$thumbnail-border-color-alt:            $gray-700-alt !default;
-$thumbnail-box-shadow-alt:              $box-shadow-sm-alt !default;
-
-
-// Figures
-// ______________________________________
-
-$figure-caption-color-alt:              $gray-400-alt !default;
-
-
-// Breadcrumbs
-// ______________________________________
-
-$breadcrumb-bg-alt:                     null !default;
-$breadcrumb-divider-color-alt:          $gray-400-alt !default;
-$breadcrumb-active-color-alt:           $gray-400-alt !default;
-
-// Carousel
-// ______________________________________
-
-$carousel-control-color-alt:             $white-alt !default;
-$carousel-control-opacity-alt:           .5 !default;
-$carousel-control-hover-opacity-alt:     .9 !default;
-
-$carousel-indicator-opacity-alt:         .5 !default;
-$carousel-indicator-active-bg-alt:       $black-alt !default;
-$carousel-indicator-active-opacity-alt:  1 !default;
-
-$carousel-caption-color-alt:             $black-alt !default;
-
-$carousel-control-prev-icon-bg-alt:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$carousel-control-color-alt}'><path d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/></svg>") !default;
-$carousel-control-next-icon-bg-alt:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$carousel-control-color-alt}'><path d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/></svg>") !default;
-
-$carousel-dark-indicator-active-bg-alt:  $white-alt !default;
-$carousel-dark-caption-color-alt:        $white-alt !default;
-$carousel-dark-control-icon-filter-alt:  invert(1) grayscale(100) !default;
-
-
-// Spinners
-// ______________________________________
-
-// ...nada
-
-
-// Close
-// ______________________________________
-
-$btn-close-color-alt:            $white-alt !default;
-$btn-close-bg-alt:               url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$btn-close-color-alt}'><path d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/></svg>") !default;
-$btn-close-focus-shadow-alt:     $input-btn-focus-box-shadow-alt !default;
-$btn-close-opacity-alt:          .5 !default;
-$btn-close-hover-opacity-alt:    .75 !default;
-$btn-close-focus-opacity-alt:    1 !default;
-$btn-close-disabled-opacity-alt: .25 !default;
-$btn-close-white-filter-alt:     invert(1) grayscale(100%) brightness(200%) !default;
-
-
-// Offcanvas
-// ______________________________________
-
-$offcanvas-border-color-alt:            $modal-content-border-color-alt !default;
-$offcanvas-bg-color-alt:                $modal-content-bg-alt !default;
-$offcanvas-color-alt:                   $modal-content-color-alt !default;
-$offcanvas-box-shadow-alt:              $modal-content-box-shadow-xs-alt !default;
-$offcanvas-backdrop-bg-alt:             $modal-backdrop-bg-alt !default;
-$offcanvas-backdrop-opacity-alt:        $modal-backdrop-opacity-alt !default;
-
-
-// Code
-// ______________________________________
-
-$code-color-alt:                        $teal-alt !default;
-
-$kbd-color-alt:                         $gray-100-alt !default;
-$kbd-bg-alt:                            $gray-800-alt !default;
-
-$pre-color-alt:                         $gray-100-alt !default;
-
-
-// Unique to Dark!!
-// **************************************
-// Text Selection
-// ______________________________________
-
-$selection-color-alt:                       $gray-200-alt !default;
-$selection-bg-alt:                          rgba($cyan-alt, .5) !default;
diff --git a/src/scss/bootstrap-dark/forms/_floating-labels.scss b/src/scss/bootstrap-dark/forms/_floating-labels.scss
deleted file mode 100644
index 1ea16fd6b..000000000
--- a/src/scss/bootstrap-dark/forms/_floating-labels.scss
+++ /dev/null
@@ -1,26 +0,0 @@
-.form-floating {
-
-  // > label {
-  //   border: $input-border-width solid transparent; // Required for aligning label's text with the input as it affects inner box model
-  // }
-
-  > .form-control {
-    &::placeholder {
-      color: transparent;
-    }
-  }
-
-  > .form-control:focus,
-  > .form-control:not(:placeholder-shown),
-  > .form-select {
-    ~ label {
-      opacity: $form-floating-label-opacity-alt;
-    }
-  }
-  // Duplicated because `:-webkit-autofill` invalidates other selectors when grouped
-  > .form-control:-webkit-autofill {
-    ~ label {
-      opacity: $form-floating-label-opacity-alt;
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/forms/_form-check.scss b/src/scss/bootstrap-dark/forms/_form-check.scss
deleted file mode 100644
index 2126e8229..000000000
--- a/src/scss/bootstrap-dark/forms/_form-check.scss
+++ /dev/null
@@ -1,93 +0,0 @@
-// Check/radio
-
-.form-check-input {
-  background-color: $form-check-input-bg-alt;
-  border: $form-check-input-border-alt;
-
-  &:active {
-    filter: $form-check-input-active-filter-alt;
-  }
-
-  &:focus {
-    border-color: $form-check-input-focus-border-alt;
-    box-shadow: $form-check-input-focus-box-shadow-alt;
-  }
-
-  &:checked {
-    background-color: $form-check-input-checked-bg-color-alt;
-    border-color: $form-check-input-checked-border-color-alt;
-
-    &[type="checkbox"] {
-      @if $enable-gradients {
-        background-image: escape-svg($form-check-input-checked-bg-image-alt), var(--#{$variable-prefix}gradient);
-      } @else {
-        background-image: escape-svg($form-check-input-checked-bg-image-alt);
-      }
-    }
-
-    &[type="radio"] {
-      @if $enable-gradients {
-        background-image: escape-svg($form-check-radio-checked-bg-image-alt), var(--#{$variable-prefix}gradient);
-      } @else {
-        background-image: escape-svg($form-check-radio-checked-bg-image-alt);
-      }
-    }
-  }
-
-  &[type="checkbox"]:indeterminate {
-    background-color: $form-check-input-indeterminate-bg-color-alt;
-    border-color: $form-check-input-indeterminate-border-color-alt;
-
-    @if $enable-gradients {
-      background-image: escape-svg($form-check-input-indeterminate-bg-image-alt), var(--#{$variable-prefix}gradient);
-    } @else {
-      background-image: escape-svg($form-check-input-indeterminate-bg-image-alt);
-    }
-  }
-
-  &:disabled {
-    opacity: $form-check-input-disabled-opacity-alt;
-  }
-
-  // Use disabled attribute in addition of :disabled pseudo-class
-  &[disabled],
-  &:disabled {
-    ~ .form-check-label {
-      opacity: $form-check-label-disabled-opacity-alt;
-    }
-  }
-}
-
-.form-check-label {
-  color: $form-check-label-color-alt;
-}
-
-// Switch
-
-.form-switch {
-
-  .form-check-input {
-    background-image: escape-svg($form-switch-bg-image-alt);
-
-    &:focus {
-      background-image: escape-svg($form-switch-focus-bg-image-alt);
-    }
-
-    &:checked {
-      @if $enable-gradients {
-        background-image: escape-svg($form-switch-checked-bg-image-alt), var(--#{$variable-prefix}gradient);
-      } @else {
-        background-image: escape-svg($form-switch-checked-bg-image-alt);
-      }
-    }
-  }
-}
-
-.btn-check {
-  &[disabled],
-  &:disabled {
-    + .btn {
-      opacity: $form-check-btn-check-disabled-opacity-alt;
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/forms/_form-control.scss b/src/scss/bootstrap-dark/forms/_form-control.scss
deleted file mode 100644
index f0345387d..000000000
--- a/src/scss/bootstrap-dark/forms/_form-control.scss
+++ /dev/null
@@ -1,64 +0,0 @@
-//
-// General form controls (plus a few specific high-level interventions)
-//
-
-.form-control {
-  color: $input-color-alt;
-  background-color: $input-bg-alt;
-  border: $input-border-width solid $input-border-color-alt;
-
-  @include box-shadow($input-box-shadow-alt);
-
-  // Customize the `:focus` state to imitate native WebKit styles.
-  &:focus {
-    color: $input-focus-color-alt;
-    background-color: $input-focus-bg-alt;
-    border-color: $input-focus-border-color-alt;
-    @if $enable-shadows {
-      @include box-shadow($input-box-shadow-alt, $input-focus-box-shadow-alt);
-    } @else {
-      box-shadow: $input-focus-box-shadow-alt;
-    }
-  }
-
-  // Placeholder
-  &::placeholder {
-    color: $input-placeholder-color-alt;
-  }
-
-  // Disabled and read-only inputs
-  &:disabled,
-  &[readonly] {
-    background-color: $input-disabled-bg-alt;
-    border-color: $input-disabled-border-color-alt;
-  }
-
-  // File input buttons theming
-  &::file-selector-button {
-    color: $form-file-button-color-alt;
-    @include gradient-bg($form-file-button-bg-alt);
-    border-color: inherit;
-  }
-
-  &:hover:not(:disabled):not([readonly])::file-selector-button {
-    background-color: $form-file-button-hover-bg-alt;
-  }
-
-  &::-webkit-file-upload-button {
-    color: $form-file-button-color-alt;
-    @include gradient-bg($form-file-button-bg-alt);
-    border-color: inherit;
-  }
-
-  &:hover:not(:disabled):not([readonly])::-webkit-file-upload-button {
-    background-color: $form-file-button-hover-bg-alt;
-  }
-}
-
-// Readonly controls as plain text
-
-.form-control-plaintext {
-  color: $input-plaintext-color-alt;
-  background-color: transparent;
-  border: solid transparent;
-}
diff --git a/src/scss/bootstrap-dark/forms/_form-range.scss b/src/scss/bootstrap-dark/forms/_form-range.scss
deleted file mode 100644
index a2869b8ae..000000000
--- a/src/scss/bootstrap-dark/forms/_form-range.scss
+++ /dev/null
@@ -1,56 +0,0 @@
-// Range
-
-.form-range {
-  // background-color: transparent;
-
-  &:focus {
-    &::-webkit-slider-thumb { box-shadow: $form-range-thumb-focus-box-shadow-alt; }
-    &::-moz-range-thumb     { box-shadow: $form-range-thumb-focus-box-shadow-alt; }
-  }
-
-  &::-webkit-slider-thumb {
-    @include gradient-bg($form-range-thumb-bg-alt);
-    border: $form-range-thumb-border-alt;
-    @include box-shadow($form-range-thumb-box-shadow-alt);
-
-    &:active {
-      @include gradient-bg($form-range-thumb-active-bg-alt);
-    }
-  }
-
-  &::-webkit-slider-runnable-track {
-    // color: transparent; // Why?
-    background-color: $form-range-track-bg-alt;
-    // border-color: transparent;
-    @include box-shadow($form-range-track-box-shadow-alt);
-  }
-
-  &::-moz-range-thumb {
-    @include gradient-bg($form-range-thumb-bg-alt);
-    border: $form-range-thumb-border-alt;
-    @include box-shadow($form-range-thumb-box-shadow-alt);
-
-    &:active {
-      @include gradient-bg($form-range-thumb-active-bg-alt);
-    }
-  }
-
-  &::-moz-range-track {
-    // color: transparent;
-    background-color: $form-range-track-bg-alt;
-    // border-color: transparent; // Firefox specific?
-    @include box-shadow($form-range-track-box-shadow-alt);
-  }
-
-  &:disabled {
-    pointer-events: none;
-
-    &::-webkit-slider-thumb {
-      background-color: $form-range-thumb-disabled-bg-alt;
-    }
-
-    &::-moz-range-thumb {
-      background-color: $form-range-thumb-disabled-bg-alt;
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/forms/_form-select.scss b/src/scss/bootstrap-dark/forms/_form-select.scss
deleted file mode 100644
index c3c4f569f..000000000
--- a/src/scss/bootstrap-dark/forms/_form-select.scss
+++ /dev/null
@@ -1,35 +0,0 @@
-// Select
-
-.form-select {
-  color: $form-select-color-alt;
-  background-color: $form-select-bg-alt;
-  background-image: escape-svg($form-select-indicator-alt);
-  border: $form-select-border-width solid $form-select-border-color-alt;
-  @include box-shadow($form-select-box-shadow-alt);
-
-  &:focus {
-    border-color: $form-select-focus-border-color-alt;
-    @if $enable-shadows {
-      @include box-shadow($form-select-box-shadow-alt, $form-select-focus-box-shadow-alt);
-    } @else {
-      box-shadow: $form-select-focus-box-shadow-alt;
-    }
-  }
-
-  &[multiple],
-  &[size]:not([size="1"]) {
-    background-image: none;
-  }
-
-  &:disabled {
-    color: $form-select-disabled-color-alt;
-    background-color: $form-select-disabled-bg-alt;
-    border-color: $form-select-disabled-border-color-alt;
-  }
-
-  // Remove outline from select box in FF
-  &:-moz-focusring {
-    color: transparent;
-    text-shadow: 0 0 0 $form-select-color-alt;
-  }
-}
diff --git a/src/scss/bootstrap-dark/forms/_form-text.scss b/src/scss/bootstrap-dark/forms/_form-text.scss
deleted file mode 100644
index bdc51ee76..000000000
--- a/src/scss/bootstrap-dark/forms/_form-text.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-// Form text
-
-.form-text {
-  color: $form-text-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/forms/_input-group.scss b/src/scss/bootstrap-dark/forms/_input-group.scss
deleted file mode 100644
index d756fd973..000000000
--- a/src/scss/bootstrap-dark/forms/_input-group.scss
+++ /dev/null
@@ -1,16 +0,0 @@
-// Textual addons
-
-.input-group-text {
-  color: $input-group-addon-color-alt;
-  background-color: $input-group-addon-bg-alt;
-  border: $input-border-width solid $input-group-addon-border-color-alt;
-}
-
-// Rounded corners
-
-.input-group {
-  $validation-messages: "";
-  @each $state in map-keys($form-validation-states-alt) {
-    $validation-messages: $validation-messages + ":not(." + unquote($state) + "-tooltip)" + ":not(." + unquote($state) + "-feedback)";
-  }
-}  // WHAT DOES THIS DO???
diff --git a/src/scss/bootstrap-dark/forms/_labels.scss b/src/scss/bootstrap-dark/forms/_labels.scss
deleted file mode 100644
index 771971c0b..000000000
--- a/src/scss/bootstrap-dark/forms/_labels.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-// Labels
-
-.form-label {
-  color: $form-label-color-alt;
-}
-
-.col-form-label {
-  color: $form-label-color-alt;
-}
diff --git a/src/scss/bootstrap-dark/forms/_validation.scss b/src/scss/bootstrap-dark/forms/_validation.scss
deleted file mode 100644
index 4058e91e5..000000000
--- a/src/scss/bootstrap-dark/forms/_validation.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-// Form validation
-
-@each $state, $data in $form-validation-states-alt {
-  @include form-validation-state-alt($state, $data...);
-}
diff --git a/src/scss/bootstrap-dark/helpers/_colored-links.scss b/src/scss/bootstrap-dark/helpers/_colored-links.scss
deleted file mode 100644
index d728ccdc3..000000000
--- a/src/scss/bootstrap-dark/helpers/_colored-links.scss
+++ /dev/null
@@ -1,12 +0,0 @@
-@each $color, $value in $theme-colors-alt {
-  .link-#{$color} {
-    color: $value;
-
-    @if $link-shade-percentage != 0 {
-      &:hover,
-      &:focus {
-        color: if(color-contrast($value, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt) == $color-contrast-light-alt, shade-color($value, $link-shade-percentage-alt), tint-color($value, $link-shade-percentage-alt));
-      }
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/helpers/_vr.scss b/src/scss/bootstrap-dark/helpers/_vr.scss
deleted file mode 100644
index fac86b51a..000000000
--- a/src/scss/bootstrap-dark/helpers/_vr.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// from commit [aee169d19](https://github.com/twbs/bootstrap/commit/aee169d19288d78330be2df0960ea8924353f84f)
-
-.vr {
-  background-color: currentcolor;
-  opacity: $hr-opacity-alt;
-}
diff --git a/src/scss/bootstrap-dark/mixins/_backdrop.scss b/src/scss/bootstrap-dark/mixins/_backdrop.scss
deleted file mode 100644
index 920948e0d..000000000
--- a/src/scss/bootstrap-dark/mixins/_backdrop.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-@mixin overlay-backdrop-alt($backdrop-bg-alt, $backdrop-opacity-alt) {
-  background-color: $backdrop-bg-alt;
-
-  // Fade for backdrop
-  &.fade { opacity: 0; }
-  &.show { opacity: $backdrop-opacity-alt; }
-}
diff --git a/src/scss/bootstrap-dark/mixins/_buttons.scss b/src/scss/bootstrap-dark/mixins/_buttons.scss
deleted file mode 100644
index 87508131d..000000000
--- a/src/scss/bootstrap-dark/mixins/_buttons.scss
+++ /dev/null
@@ -1,119 +0,0 @@
-// Button variants
-
-@mixin button-variant-alt(
-  $background,
-  $border,
-  $color: color-contrast($background, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt),
-  $hover-background: if($color == $color-contrast-light-alt, shade-color($background, $btn-hover-bg-shade-amount-alt), tint-color($background, $btn-hover-bg-tint-amount-alt)),
-  $hover-border: if($color == $color-contrast-light-alt, shade-color($border, $btn-hover-border-shade-amount-alt), tint-color($border, $btn-hover-border-tint-amount-alt)),
-  $hover-color: color-contrast($hover-background, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt),
-  $active-background: if($color == $color-contrast-light-alt, shade-color($background, $btn-active-bg-shade-amount-alt), tint-color($background, $btn-active-bg-tint-amount-alt)),
-  $active-border: if($color == $color-contrast-light-alt, shade-color($border, $btn-active-border-shade-amount-alt), tint-color($border, $btn-active-border-tint-amount-alt)),
-  $active-color: color-contrast($active-background, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt),
-  $disabled-background: $background,
-  $disabled-border: $border,
-  $disabled-color: color-contrast($disabled-background, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt),
-  $btn-box-shadow: $btn-box-shadow-alt
-) {
-  color: $color;
-  @include gradient-bg($background);
-  border-color: $border;
-  @include box-shadow($btn-box-shadow);
-
-  &:hover {
-    color: $hover-color;
-    @include gradient-bg($hover-background);
-    border-color: $hover-border;
-  }
-
-  .btn-check:focus + &,
-  &:focus {
-    color: $hover-color;
-    @include gradient-bg($hover-background);
-    border-color: $hover-border;
-    @if $enable-shadows {
-      @include box-shadow($btn-box-shadow, 0 0 0 $btn-focus-width rgba(mix($color, $border, 15%), .5));
-    } @else {
-      // Avoid using mixin so we can pass custom focus shadow properly
-      box-shadow: 0 0 0 $btn-focus-width rgba(mix($color, $border, 15%), .5);
-    }
-  }
-
-  .btn-check:checked + &,
-  .btn-check:active + &,
-  &:active,
-  &.active,
-  .show > &.dropdown-toggle {
-    color: $active-color;
-    background-color: $active-background;
-    // Remove CSS gradients if they're enabled
-    background-image: if($enable-gradients, none, null);
-    border-color: $active-border;
-
-    &:focus {
-      @if $enable-shadows {
-        @include box-shadow($btn-active-box-shadow, 0 0 0 $btn-focus-width rgba(mix($color, $border, 15%), .5));
-      } @else {
-        // Avoid using mixin so we can pass custom focus shadow properly
-        box-shadow: 0 0 0 $btn-focus-width rgba(mix($color, $border, 15%), .5);
-      }
-    }
-  }
-
-  &:disabled,
-  &.disabled {
-    color: $disabled-color;
-    background-color: $disabled-background;
-    // Remove CSS gradients if they're enabled
-    background-image: if($enable-gradients, none, null);
-    border-color: $disabled-border;
-  }
-}
-
-@mixin button-outline-variant-alt(
-  $color,
-  $color-hover: color-contrast($color),
-  $active-background: $color,
-  $active-border: $color,
-  $active-color: color-contrast($active-background),
-  $btn-active-box-shadow: $btn-active-box-shadow-alt
-) {
-  color: $color;
-  border-color: $color;
-
-  &:hover {
-    color: $color-hover;
-    background-color: $active-background;
-    border-color: $active-border;
-  }
-
-  .btn-check:focus + &,
-  &:focus {
-    box-shadow: 0 0 0 $btn-focus-width rgba($color, .5);
-  }
-
-  .btn-check:checked + &,
-  .btn-check:active + &,
-  &:active,
-  &.active,
-  &.dropdown-toggle.show {
-    color: $active-color;
-    background-color: $active-background;
-    border-color: $active-border;
-
-    &:focus {
-      @if $enable-shadows {
-        @include box-shadow($btn-active-box-shadow, 0 0 0 $btn-focus-width rgba($color, .5));
-      } @else {
-        // Avoid using mixin so we can pass custom focus shadow properly
-        box-shadow: 0 0 0 $btn-focus-width rgba($color, .5);
-      }
-    }
-  }
-
-  &:disabled,
-  &.disabled {
-    color: $color;
-    background-color: transparent;
-  }
-}
diff --git a/src/scss/bootstrap-dark/mixins/_color-scheme.scss b/src/scss/bootstrap-dark/mixins/_color-scheme.scss
deleted file mode 100644
index 360e3d494..000000000
--- a/src/scss/bootstrap-dark/mixins/_color-scheme.scss
+++ /dev/null
@@ -1,45 +0,0 @@
-// scss-docs-start mixin-color-scheme
-@mixin color-scheme-alt($scheme: light) {
-  @if $scheme == dark {
-    @media (prefers-color-scheme: dark) {
-      @content;
-    }
-  } @else if $scheme == light {
-    @media (prefers-color-scheme: light) {
-      @content;
-    }
-  } @else {
-    // assume what gets passed here is not light or dark, thus is a CSS element,
-    // e.g. "html.dark", or "[data-theme-dark]"
-    #{$scheme} {
-      @content;
-    }
-  }
-}
-// scss-docs-end mixin-color-scheme
-
-@mixin color-scheme-property($scheme: light, $dual: false) {
-  @if $dual {
-    @if $scheme == dark {
-      color-scheme: dark light;
-    } @else if $scheme == light {
-      color-scheme: light dark;
-    }
-  } @else {
-    @if $scheme == dark {
-      color-scheme: dark;
-    } @else if $scheme == light {
-      color-scheme: light;
-    }
-  }
-}
-
-@function alternative-color-scheme($scheme: light) {
-  @if $scheme == dark {
-    @return light;
-  } @else if $scheme == light {
-    @return dark;
-  } @else {
-    @return $scheme;
-  }
-}
diff --git a/src/scss/bootstrap-dark/mixins/_forms.scss b/src/scss/bootstrap-dark/mixins/_forms.scss
deleted file mode 100644
index da3e05c3e..000000000
--- a/src/scss/bootstrap-dark/mixins/_forms.scss
+++ /dev/null
@@ -1,73 +0,0 @@
-@mixin form-validation-state-alt(
-  $state,
-  $color,
-  $icon,
-  $tooltip-color: color-contrast($color, $color-contrast-dark-alt, $color-contrast-light-alt, $min-contrast-ratio-alt),
-  $tooltip-bg-color: rgba($color, $form-feedback-tooltip-opacity-alt),
-  $focus-box-shadow: 0 0 $input-btn-focus-blur-alt $input-focus-width rgba($color, $input-btn-focus-color-opacity-alt)
-) {
-  .#{$state}-feedback {
-    color: $color;
-  }
-
-  .#{$state}-tooltip {
-    color: $tooltip-color;
-    background-color: $tooltip-bg-color;
-  }
-
-  .form-control {
-    @include form-validation-state-selector($state) {
-      border-color: $color;
-
-      @if $enable-validation-icons {
-        background-image: escape-svg($icon);
-      }
-
-      &:focus {
-        border-color: $color;
-        box-shadow: $focus-box-shadow;
-      }
-    }
-  }
-
-  .form-select {
-    @include form-validation-state-selector($state) {
-      border-color: $color;
-
-      @if $enable-validation-icons {
-        &:not([multiple]):not([size]),
-        &:not([multiple])[size="1"] {
-          background-image: escape-svg($form-select-indicator-alt), escape-svg($icon);
-        }
-
-        &[multiple],
-        &[size]:not([size="1"]) {
-          background-image: escape-svg($icon);
-        }
-      }
-
-      &:focus {
-        border-color: $color;
-        box-shadow: $focus-box-shadow;
-      }
-    }
-  }
-
-  .form-check-input {
-    @include form-validation-state-selector($state) {
-      border-color: $color;
-
-      &:checked {
-        background-color: $color;
-      }
-
-      &:focus {
-        box-shadow: $focus-box-shadow;
-      }
-
-      ~ .form-check-label {
-        color: $color;
-      }
-    }
-  }
-}
diff --git a/src/scss/bootstrap-dark/mixins/_table-variants.scss b/src/scss/bootstrap-dark/mixins/_table-variants.scss
deleted file mode 100644
index 1211fefb5..000000000
--- a/src/scss/bootstrap-dark/mixins/_table-variants.scss
+++ /dev/null
@@ -1,19 +0,0 @@
-@mixin table-variant-alt($state, $background) {
-  .table-#{$state} {
-    $color: color-contrast(opaque($body-bg-alt, $background));
-    $hover-bg: mix($color, $background, percentage($table-hover-bg-factor-alt));
-    $striped-bg: mix($color, $background, percentage($table-striped-bg-factor-alt));
-    $active-bg: mix($color, $background, percentage($table-active-bg-factor-alt));
-
-    --#{$variable-prefix}table-bg: #{$background};
-    --#{$variable-prefix}table-striped-bg: #{$striped-bg};
-    --#{$variable-prefix}table-striped-color: #{color-contrast($striped-bg)};
-    --#{$variable-prefix}table-active-bg: #{$active-bg};
-    --#{$variable-prefix}table-active-color: #{color-contrast($active-bg)};
-    --#{$variable-prefix}table-hover-bg: #{$hover-bg};
-    --#{$variable-prefix}table-hover-color: #{color-contrast($hover-bg)};
-
-    color: $color;
-    border-color: mix($color, $background, percentage($table-border-factor-alt));
-  }
-}
diff --git a/src/scss/bootstrap-dark/utilities/_api-all.scss b/src/scss/bootstrap-dark/utilities/_api-all.scss
deleted file mode 100644
index 4db1af8f7..000000000
--- a/src/scss/bootstrap-dark/utilities/_api-all.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-@use "sass:map";
-
-@each $color-scheme in $color-schemes {
-  @include color-scheme-alt($color-scheme) {
-    @include generate-utility(map-get($utilities, "display"), "-#{$color-scheme}");
-  }
-}
diff --git a/src/scss/bootstrap-dark/utilities/_api.scss b/src/scss/bootstrap-dark/utilities/_api.scss
deleted file mode 100644
index f5499f6c7..000000000
--- a/src/scss/bootstrap-dark/utilities/_api.scss
+++ /dev/null
@@ -1,17 +0,0 @@
-// Loop over each breakpoint
-@each $breakpoint in map-keys($grid-breakpoints) {
-
-  // Generate media query if needed
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    // Loop over each utility property
-    @each $key, $utility in $utilities-alt {
-      // The utility can be disabled with `false`, thus check if the utility is a map first
-      // Only proceed if responsive media queries are enabled or if it's the base media query
-      @if type-of($utility) == "map" and (map-get($utility, responsive) or $infix == "") {
-        @include generate-utility($utility, $infix);
-      }
-    }
-  }
-}
diff --git a/src/scss/dark/adminlte-dark-addon.scss b/src/scss/dark/adminlte-dark-addon.scss
index bba4deb51..840b7587b 100644
--- a/src/scss/dark/adminlte-dark-addon.scss
+++ b/src/scss/dark/adminlte-dark-addon.scss
@@ -8,58 +8,20 @@
 // Configuration
 @import "bootstrap/scss/functions";
 @import "bootstrap/scss/variables";  // defaults are here
-@import "../bootstrap-dark/variables-alt";  // dark color set is here
 @import "bootstrap/scss/mixins";
-@import "../bootstrap-dark/mixins";
 @import "bootstrap/scss/utilities";
-@import "../bootstrap-dark/utilities";
-@import "../bootstrap-dark/patch";  // missing from BS, unsupported patch/hack
 
 // stylelint-disable no-invalid-position-at-import-rule
 
 :root { color-scheme: dark; }
 
 // Layout & components
-@import "../bootstrap-dark/root";
-@import "../bootstrap-dark/reboot";
-@import "../bootstrap-dark/type";
-@import "../bootstrap-dark/images";
-// @import "../bootstrap-dark/containers";
-// @import "../bootstrap-dark/grid";
-@import "../bootstrap-dark/tables";
-@import "../bootstrap-dark/forms";
-@import "../bootstrap-dark/buttons";
-// @import "../bootstrap-dark/transitions";
-@import "../bootstrap-dark/dropdown";
-@import "../bootstrap-dark/button-group";
-@import "../bootstrap-dark/nav";
-@import "../bootstrap-dark/navbar";
-@import "../bootstrap-dark/card";
-@import "../bootstrap-dark/accordion";
-@import "../bootstrap-dark/breadcrumb";
-@import "../bootstrap-dark/pagination";
-@import "../bootstrap-dark/badge";
-@import "../bootstrap-dark/alert";
-@import "../bootstrap-dark/progress";
-@import "../bootstrap-dark/list-group";
-@import "../bootstrap-dark/close";
-@import "../bootstrap-dark/toasts";
-@import "../bootstrap-dark/modal";
-@import "../bootstrap-dark/tooltip";
-@import "../bootstrap-dark/popover";
-@import "../bootstrap-dark/carousel";
-// @import "../bootstrap-dark/spinners";
-@import "../bootstrap-dark/offcanvas";
-@import "../bootstrap-dark/placeholders";
 
 // Helpers
-@import "../bootstrap-dark/helpers";
 
 // Utilities
-@import "../bootstrap-dark/utilities/api";
 
 // Unique to dark-mode
-@import "../bootstrap-dark/dark";
 
 // AdminLTE dark
 @import "variables-alt";