first commit

themes/hugo-coder/assets/scss/_footer_dark.scss

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+@mixin footer_dark {
+  .footer {
+    a {
+      color: $link-color-dark;
+    }
+  }
+}
+
+body.colorscheme-dark {
+  @include footer_dark();
+}
+
+body.colorscheme-auto {
+  @media (prefers-color-scheme: dark) {
+    @include footer_dark();
+  }
+}