Fix: favicon dark mode support

src/public/favicon.svg

@@ -1,8 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<svg id="Ebene_1" xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 119.1 119.1">
+<svg id="Ebene_1" xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 119.1 119.1" style="color:#1d1d1b">
   <!-- Generator: Adobe Illustrator 30.0.0, SVG Export Plug-In . SVG Version: 2.1.1 Build 123)  -->
   <defs>
     <style>
+      @media (prefers-color-scheme: dark) {
+        :root { color: #ffffff; }
+      }
+
       .st0 {
         fill: none;
       }
@@ -14,6 +18,7 @@
       .st1, .st2 {
         font-family: Geometos, Geometos;
         font-size: 12px;
+        fill: currentColor;
       }
 
       .st2 {
@@ -26,7 +31,7 @@
       }
 
       .st4 {
-        fill: #1d1d1b;
+        fill: currentColor;
       }
     </style>
   </defs>