1 files changed, 32 insertions, 9 deletions

diff --git a/scss/_close.scss b/scss/_close.scss
index a0813de..4d6e73c 100644
--- a/scss/_close.scss
+++ b/scss/_close.scss
@@ -4,37 +4,60 @@
 // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
 
 .btn-close {
+  // scss-docs-start close-css-vars
+  --#{$prefix}btn-close-color: #{$btn-close-color};
+  --#{$prefix}btn-close-bg: #{ escape-svg($btn-close-bg) };
+  --#{$prefix}btn-close-opacity: #{$btn-close-opacity};
+  --#{$prefix}btn-close-hover-opacity: #{$btn-close-hover-opacity};
+  --#{$prefix}btn-close-focus-shadow: #{$btn-close-focus-shadow};
+  --#{$prefix}btn-close-focus-opacity: #{$btn-close-focus-opacity};
+  --#{$prefix}btn-close-disabled-opacity: #{$btn-close-disabled-opacity};
+  --#{$prefix}btn-close-white-filter: #{$btn-close-white-filter};
+  // scss-docs-end close-css-vars
+
   box-sizing: content-box;
   width: $btn-close-width;
   height: $btn-close-height;
   padding: $btn-close-padding-y $btn-close-padding-x;
-  color: $btn-close-color;
-  background: transparent escape-svg($btn-close-bg) center / $btn-close-width auto no-repeat; // include transparent for button elements
+  color: var(--#{$prefix}btn-close-color);
+  background: transparent var(--#{$prefix}btn-close-bg) center / $btn-close-width auto no-repeat; // include transparent for button elements
   border: 0; // for button elements
   @include border-radius();
-  opacity: $btn-close-opacity;
+  opacity: var(--#{$prefix}btn-close-opacity);
 
   // Override <a>'s hover style
   &:hover {
-    color: $btn-close-color;
+    color: var(--#{$prefix}btn-close-color);
     text-decoration: none;
-    opacity: $btn-close-hover-opacity;
+    opacity: var(--#{$prefix}btn-close-hover-opacity);
   }
 
   &:focus {
     outline: 0;
-    box-shadow: $btn-close-focus-shadow;
-    opacity: $btn-close-focus-opacity;
+    box-shadow: var(--#{$prefix}btn-close-focus-shadow);
+    opacity: var(--#{$prefix}btn-close-focus-opacity);
   }
 
   &:disabled,
   &.disabled {
     pointer-events: none;
     user-select: none;
-    opacity: $btn-close-disabled-opacity;
+    opacity: var(--#{$prefix}btn-close-disabled-opacity);
   }
 }
 
+@mixin btn-close-white() {
+  filter: var(--#{$prefix}btn-close-white-filter);
+}
+
 .btn-close-white {
-  filter: $btn-close-white-filter;
+  @include btn-close-white();
+}
+
+@if $enable-dark-mode {
+  @include color-mode(dark) {
+    .btn-close {
+      @include btn-close-white();
+    }
+  }
 }