fix(ui): brighten footer link text for readability on dark background

ui/src/routes/+layout.svelte

@@ -396,16 +396,16 @@
 	</main>
 
 	<footer class="border-t border-zinc-800 mt-auto">
-		<div class="max-w-6xl mx-auto px-4 py-6 flex flex-col items-center gap-4 text-xs text-zinc-600">
+		<div class="max-w-6xl mx-auto px-4 py-6 flex flex-col items-center gap-4 text-xs text-zinc-500">
 			<!-- Top row: site links -->
 			<nav class="flex flex-wrap items-center justify-center gap-x-5 gap-y-2">
-			<a href="/books" class="hover:text-zinc-400 transition-colors">Library</a>
-			<a href="/catalogue" class="hover:text-zinc-400 transition-colors">Catalogue</a>
+			<a href="/books" class="hover:text-zinc-300 transition-colors">Library</a>
+			<a href="/catalogue" class="hover:text-zinc-300 transition-colors">Catalogue</a>
 			<a
 				href="https://feedback.libnovel.cc"
 				target="_blank"
 				rel="noopener noreferrer"
-				class="hover:text-zinc-400 transition-colors flex items-center gap-1"
+				class="hover:text-zinc-300 transition-colors flex items-center gap-1"
 			>
 				Feedback
 				<svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -417,7 +417,7 @@
 				href="https://novelfire.net"
 					target="_blank"
 					rel="noopener noreferrer"
-					class="hover:text-zinc-400 transition-colors flex items-center gap-1"
+					class="hover:text-zinc-300 transition-colors flex items-center gap-1"
 				>
 					novelfire.net
 					<svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -427,10 +427,10 @@
 				</a>
 			</nav>
 		<!-- Bottom row: legal links + copyright -->
-		<div class="flex flex-wrap items-center justify-center gap-x-5 gap-y-2 text-zinc-700">
-			<a href="/disclaimer" class="hover:text-zinc-500 transition-colors">Disclaimer</a>
-			<a href="/privacy" class="hover:text-zinc-500 transition-colors">Privacy</a>
-			<a href="/dmca" class="hover:text-zinc-500 transition-colors">DMCA</a>
+		<div class="flex flex-wrap items-center justify-center gap-x-5 gap-y-2 text-zinc-500">
+			<a href="/disclaimer" class="hover:text-zinc-300 transition-colors">Disclaimer</a>
+			<a href="/privacy" class="hover:text-zinc-300 transition-colors">Privacy</a>
+			<a href="/dmca" class="hover:text-zinc-300 transition-colors">DMCA</a>
 			<span>&copy; {new Date().getFullYear()} libnovel</span>
 		</div>
 		<!-- Build version / commit SHA / build time -->