Visual and code overhaul, including Nix support

src/components/Footer.astro

@@ -2,16 +2,15 @@
 import { siteConfig } from "../config/site";
 ---
 
-<footer
-    class="footer footer-center p-4 bg-base-300 text-base-content"
-    role="contentinfo"
->
-    <aside>
-        <p>
-            <span class="sr-only">Copyright</span>
-            © {new Date().getFullYear()} - All rights reserved by {
-                siteConfig.name
-            }
-        </p>
-    </aside>
+<footer class="bg-base-200 py-8" role="contentinfo">
+    <div class="max-w-7xl mx-auto px-6">
+        <div class="text-center">
+            <p class="text-base-content/80 font-medium">
+                <span class="sr-only">Copyright</span>
+                © {new Date().getFullYear()} - All rights reserved by {
+                    siteConfig.name
+                }
+            </p>
+        </div>
+    </div>
 </footer>