feat: update UI to glassmorphic design and copper theme

frontend/src/components/FloatingContact.tsx

@@ -4,14 +4,27 @@ import { useSite } from '../api';
 
 export function FloatingContact() {
   const { brand } = useSite();
+
   return (
     <a
       href={brand.phone_href}
       aria-label="تماس تلفنی با گروه ساختمانی آرامش"
-      className="group fixed bottom-8 left-8 z-40 flex h-14 w-14 items-center justify-center rounded-full bg-copper text-char shadow-[0_10px_30px_rgba(0,0,0,0.45)] transition-transform duration-200 ease-lux hover:scale-105">
-      
-      <span className="absolute inset-0 rounded-full border border-copper/50 opacity-0 transition-transform duration-300 ease-lux group-hover:scale-125 group-hover:opacity-100" />
-      <PhoneIcon className="h-5 w-5" />
-    </a>);
+      className="group fixed bottom-8 left-8 z-40 flex h-14 w-14 items-center justify-center rounded-full border border-copper/50 bg-char/80 text-copper backdrop-blur-xl shadow-[inset_0_1px_1px_rgba(255,255,255,0.3),0_12px_35px_rgba(0,0,0,0.5),0_0_20px_rgba(197,143,92,0.25)] transition-all duration-500 ease-lux hover:scale-110 hover:border-copper hover:bg-copper hover:text-char hover:shadow-[0_0_35px_rgba(197,143,92,0.7)] active:scale-95"
+    >
+      {/* پالس هاله نوری در پس‌زمینه مانند رادار */}
+      <span
+        aria-hidden="true"
+        className="pointer-events-none absolute inset-0 rounded-full border border-copper/60 animate-ping opacity-30"
+      />
 
+      {/* خط انعکاس نوری کریستال در بالای گوی */}
+      <span
+        aria-hidden="true"
+        className="pointer-events-none absolute -top-1/2 left-0 right-0 h-full rounded-full bg-gradient-to-b from-white/25 to-transparent"
+      />
+
+      {/* آیکون تلفن با انیمیشن چرخش ظریف در زمان هاور */}
+      <PhoneIcon className="relative z-10 h-6 w-6 transition-transform duration-300 ease-lux group-hover:rotate-12" />
+    </a>
+  );
 }