style: update sidebar and dashboard with NextForm branding

apps/admin/src/components/ui/Sidebar.tsx

@@ -68,16 +68,12 @@ export function Sidebar() {
         <aside className="w-64 bg-gradient-to-b from-slate-900 via-slate-900 to-slate-950 text-white h-screen fixed left-0 top-0 flex flex-col border-r border-slate-800/50 shadow-2xl">
             {/* Logo Section */}
             <div className="p-6 border-b border-slate-800/50">
-                <div className="flex items-center gap-3">
-                    <div className="h-10 w-10 rounded-xl bg-gradient-to-br from-blue-500 to-cyan-500 flex items-center justify-center font-bold text-white shadow-lg">
-                        ⚡
-                    </div>
-                    <div>
-                        <h1 className="text-lg font-black bg-gradient-to-r from-blue-400 via-cyan-400 to-blue-300 bg-clip-text text-transparent">
-                            FitAI
-                        </h1>
-                        <p className="text-xs text-slate-400 font-semibold tracking-wide">ADMIN PRO</p>
-                    </div>
+                <div className="flex items-center justify-center">
+                    <img 
+                        src="/nextform-logo.svg" 
+                        alt="NextForm" 
+                        className="h-14 w-14"
+                    />
                 </div>
             </div>