Refactored Dark Mode to separate file

This change refactors all of the 'dark mode' settings into a single CSS
file (that can be optionally loaded)

This was mostly from the variables.css file, but there were also a few
small customizations in other files that were also included.

spearhead/assets/sass/_author-bio.scss

@@ -14,9 +14,5 @@
 		width: 14px;
 		height: 14px;
 		transform: rotate(-90deg);
-
-		@media ( prefers-color-scheme: dark ) {
-			background-image: url("data:image/svg+xml,%3Csvg class='svg-icon' width='24' height='24' aria-hidden='true' role='img' focusable='false' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M6.96954 10.2804L11.9999 15.3107L17.0302 10.2804L15.9695 9.21973L11.9999 13.1894L8.0302 9.21973L6.96954 10.2804Z' fill='%23ff6a81'%3E%3C/path%3E%3C/svg%3E");
-		}
 	}
 }

spearhead/assets/sass/_search.scss

@@ -53,13 +53,3 @@
         @extend .screen-reader-text;
     }
 }
-
-@media ( prefers-color-scheme: dark ) {
-    .search-form {
-        & > label {
-            &:before {
-                background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' id='search-icon' class='search-icon' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath fill='%23ffffff' d='M13.5 6C10.5 6 8 8.5 8 11.5c0 1.1.3 2.1.9 3l-3.4 3 1 1.1 3.4-2.9c1 .9 2.2 1.4 3.6 1.4 3 0 5.5-2.5 5.5-5.5C19 8.5 16.5 6 13.5 6zm0 9.5c-2.2 0-4-1.8-4-4s1.8-4 4-4 4 1.8 4 4-1.8 4-4 4z'%3E%3C/path%3E%3C/svg%3E");
-            }
-        }
-    }
-}

spearhead/assets/sass/_woocommerce.scss

@@ -13,11 +13,6 @@ body[class*="woocommerce"] #page {
 			min-width: 0;
 			min-height: 0;
 			padding: 1em;
-
-			@media ( prefers-color-scheme: dark ) {
-				background-color: var(--global--color-foreground);
-				border: 1px solid var(--global--color-background);
-			}
 		}
 	}
 

spearhead/variables-dark.css

@@ -0,0 +1,33 @@
+
+
+@media ( prefers-color-scheme: dark ) {
+
+	:root {
+		--global--color-primary: #ff6a81;
+		--global--color-primary-hover: #ffffff;
+		--global--color-secondary: #b2b2b2;
+		--global--color-secondary-hover: #cccccc;
+		--global--color-foreground: #ffffff;
+		--global--color-foreground-low-contrast: #b2b2b2;
+		--global--color-background: #1e1f21;
+		--global--color-background-high-contrast: #2d3139;
+		--global--color-text-selection: #000000;
+		--sticky-posts--color-background: var(--global--color-background);
+		--sticky-posts--alt-color-background: var(--global--color-background-high-contrast);
+		--primary-nav--color-background: var(--global--color-background-high-contrast);
+		--primary-nav--dropdown-color-link: var(--global--color-foreground);
+	}
+
+	.author-link:after {
+		background-image: url("data:image/svg+xml,%3Csvg class='svg-icon' width='24' height='24' aria-hidden='true' role='img' focusable='false' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M6.96954 10.2804L11.9999 15.3107L17.0302 10.2804L15.9695 9.21973L11.9999 13.1894L8.0302 9.21973L6.96954 10.2804Z' fill='%23ff6a81'%3E%3C/path%3E%3C/svg%3E");
+	}
+
+	.search-form > label:before {
+		background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' id='search-icon' class='search-icon' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath fill='%23ffffff' d='M13.5 6C10.5 6 8 8.5 8 11.5c0 1.1.3 2.1.9 3l-3.4 3 1 1.1 3.4-2.9c1 .9 2.2 1.4 3.6 1.4 3 0 5.5-2.5 5.5-5.5C19 8.5 16.5 6 13.5 6zm0 9.5c-2.2 0-4-1.8-4-4s1.8-4 4-4 4 1.8 4 4-1.8 4-4 4z'%3E%3C/path%3E%3C/svg%3E");
+	}
+
+	body[class*="woocommerce"] #page span.onsale {
+		background-color: var(--global--color-foreground);
+		border: 1px solid var(--global--color-background);
+	}
+}

spearhead/variables.css

@@ -102,21 +102,3 @@
 	--form--color-text: var(--global--color-secondary);
 
 }
-
-@media ( prefers-color-scheme: dark ) {
-	:root {
-		--global--color-primary: #ff6a81;
-		--global--color-primary-hover: #ffffff;
-		--global--color-secondary: #b2b2b2;
-		--global--color-secondary-hover: #cccccc;
-		--global--color-foreground: #ffffff;
-		--global--color-foreground-low-contrast: #b2b2b2;
-		--global--color-background: #1e1f21;
-		--global--color-background-high-contrast: #2d3139;
-		--global--color-text-selection: #000000;
-		--sticky-posts--color-background: var(--global--color-background);
-		--sticky-posts--alt-color-background: var(--global--color-background-high-contrast);
-		--primary-nav--color-background: var(--global--color-background-high-contrast);
-		--primary-nav--dropdown-color-link: var(--global--color-foreground);
-	}
-}