Update favicon

index.html

@@ -8,9 +8,11 @@
     <meta name="title" content="AI Code of Conduct">
     <meta name="robots" content="index, archive">
     <meta name="googlebot" content="index, archive">
-    <link rel="apple-touch-icon" sizes="180x180" href="assets/images/apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="assets/images/favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="assets/images/favicon-16x16.png">
+    <link rel="icon" href="assets/images/favicon.svg" type="image/svg+xml">
+    <link rel="icon" href="assets/images/favicon-32x32-black.png" sizes="32x32" type="image/png" media="(prefers-color-scheme: light)">
+    <link rel="icon" href="assets/images/favicon-16x16-black.png" sizes="16x16" type="image/png" media="(prefers-color-scheme: light)">
+    <link rel="icon" href="assets/images/favicon-32x32-white.png" sizes="32x32" type="image/png" media="(prefers-color-scheme: dark)">
+    <link rel="icon" href="assets/images/favicon-16x16-white.png" sizes="16x16" type="image/png" media="(prefers-color-scheme: dark)">
 
     <!-- OpenGraph meta data -->
     <meta property="og:site_name" content="AI Code of Conduct">