feat: Enhance HomePage and SiteList with new UI components and improved loading overlay

components/LoadingOverlay.tsx

@@ -1,28 +1,42 @@
 'use client'
 
-import Image from 'next/image'
+import React, { useEffect, useState } from 'react'
+import { createPortal } from 'react-dom'
 
 interface LoadingOverlayProps {
-  logoSrc: string
-  title: string
+  logoSrc?: string
+  title?: string
 }
 
-export default function LoadingOverlay({ logoSrc, title }: LoadingOverlayProps) {
-  return (
-    <div className="fixed inset-0 z-50 flex items-center justify-center bg-white/80 dark:bg-neutral-950/80 backdrop-blur-sm">
-      <div className="text-center">
-        <div className="mb-4 flex justify-center">
-          <Image
-            src={logoSrc}
-            alt={title}
-            width={64}
-            height={64}
-            className="animate-pulse"
+export default function LoadingOverlay({ 
+  logoSrc = "/ciphera_icon_no_margins.png", 
+  title = "Ciphera Analytics" 
+}: LoadingOverlayProps) {
+  const [mounted, setMounted] = useState(false)
+
+  useEffect(() => {
+    setMounted(true)
+    return () => setMounted(false)
+  }, [])
+
+  if (!mounted) return null
+
+  return createPortal(
+    <div className="fixed inset-0 z-[100] flex items-center justify-center bg-white dark:bg-neutral-950 animate-in fade-in duration-200">
+      <div className="flex flex-col items-center gap-6">
+        <div className="flex items-center gap-3">
+          <img 
+            src={logoSrc} 
+            alt={title} 
+            className="h-12 w-auto object-contain"
           />
+          <span className="text-3xl font-bold tracking-tight text-neutral-900 dark:text-white">
+            {title}
+          </span>
         </div>
-        <div className="h-8 w-8 animate-spin rounded-full border-4 border-neutral-200 border-t-brand-orange mx-auto mb-4"></div>
-        <p className="text-neutral-600 dark:text-neutral-400">Loading...</p>
+        <div className="h-8 w-8 animate-spin rounded-full border-4 border-neutral-200 border-t-brand-orange dark:border-neutral-800 dark:border-t-brand-orange" />
       </div>
-    </div>
+    </div>,
+    document.body
   )
 }

components/sites/SiteList.tsx

@@ -5,6 +5,8 @@ import { useRouter } from 'next/navigation'
 import { listSites, deleteSite, type Site } from '@/lib/api/sites'
 import { toast } from 'sonner'
 import LoadingOverlay from '../LoadingOverlay'
+import { Button } from '@ciphera-net/ui'
+import { BarChartIcon, TrashIcon, PlusIcon } from '@radix-ui/react-icons'
 
 export default function SiteList() {
   const [sites, setSites] = useState<Site[]>([])
@@ -50,12 +52,12 @@ export default function SiteList() {
     return (
       <div className="text-center py-12">
         <p className="text-neutral-600 dark:text-neutral-400 mb-4">No sites yet. Create your first site to get started.</p>
-        <button
+        <Button
           onClick={() => router.push('/sites/new')}
-          className="btn-primary"
         >
+          <PlusIcon className="w-4 h-4 mr-2" />
           Create Site
-        </button>
+        </Button>
       </div>
     )
   }
@@ -74,27 +76,29 @@ export default function SiteList() {
             {site.domain}
           </p>
           <div className="flex gap-2">
-            <button
+            <Button
               onClick={() => router.push(`/sites/${site.id}`)}
-              className="btn-primary flex-1 text-sm"
+              className="flex-1 text-sm"
             >
+              <BarChartIcon className="w-4 h-4 mr-2" />
               View Dashboard
-            </button>
-            <button
+            </Button>
+            <Button
+              variant="secondary"
               onClick={() => handleDelete(site.id)}
-              className="btn-secondary text-sm px-4"
+              className="text-sm px-4"
             >
-              Delete
-            </button>
+              <TrashIcon className="w-4 h-4" />
+            </Button>
           </div>
         </div>
       ))}
       <button
         onClick={() => router.push('/sites/new')}
-        className="bg-white dark:bg-neutral-900 border-2 border-dashed border-neutral-300 dark:border-neutral-700 rounded-xl p-6 hover:border-brand-orange transition-colors text-neutral-600 dark:text-neutral-400"
+        className="bg-white dark:bg-neutral-900 border-2 border-dashed border-neutral-300 dark:border-neutral-700 rounded-xl p-6 hover:border-brand-orange transition-colors text-neutral-600 dark:text-neutral-400 w-full h-full min-h-[160px] flex items-center justify-center"
       >
         <div className="text-center">
-          <div className="text-2xl mb-2">+</div>
+          <div className="text-2xl mb-2 mx-auto w-8 h-8 rounded-full bg-neutral-100 dark:bg-neutral-800 flex items-center justify-center">+</div>
           <div>Add New Site</div>
         </div>
       </button>