Fix dead space: remove max-w-6xl, edge-to-edge heroes, full-width layout

Layout:
- Removed max-w-6xl from <main> — content now fills available width
- Removed padding from <main> — each page manages its own padding
- Heroes go edge-to-edge (no inner margins)
- Content below heroes has p-4 md:p-6 lg:p-8 padding wrapper
- WhatsApp banner has its own margin so it doesn't break hero bleed
- overflow-hidden on main prevents horizontal scroll from heroes

All 6 pages:
- Hero section sits flush against edges (no gaps)
- Content below hero wrapped in padding container
- Two-column grids now use the FULL available width
- On a 1920px screen: sidebar 192px + content fills remaining ~1728px
- Right columns are now substantial (5/12 of full width = ~720px)

pledge-now-pay-later/src/app/dashboard/collect/page.tsx

@@ -186,7 +186,7 @@ export default function CollectPage() {
   // ── No events yet ──
   if (events.length === 0) {
     return (
-      <div className="space-y-8">
+      <div className="p-4 md:p-6 lg:p-8 space-y-8">
         <div>
           <h1 className="text-3xl font-black text-[#111827] tracking-tight">Collect</h1>
           <p className="text-sm text-gray-500 mt-0.5">Create an appeal and share pledge links</p>
@@ -219,10 +219,10 @@ export default function CollectPage() {
   }
 
   return (
-    <div className="space-y-6">
+    <div>
 
       {/* ━━ HERO — Brand photography + context ━━━━━━━━━━━━━━━━━━━ */}
-      <div className="grid md:grid-cols-5 gap-0 mb-6">
+      <div className="grid md:grid-cols-5 gap-0">
         <div className="md:col-span-2 relative min-h-[140px] md:min-h-[180px] overflow-hidden">
           <Image
             src="/images/brand/event-05-qr-scanning.jpg"
@@ -244,6 +244,9 @@ export default function CollectPage() {
         </div>
       </div>
 
+      {/* ── Content with padding ── */}
+      <div className="p-4 md:p-6 lg:p-8 space-y-6">
+
       {/* ── Appeals as visible cards (not hidden in a dropdown) ── */}
       {events.length > 1 && (
         <div className="space-y-2">
@@ -511,6 +514,8 @@ export default function CollectPage() {
         creating={creatingAppeal} onCreate={createAppeal}
         onCancel={() => setShowNewAppeal(false)}
       />}
+
+      </div>
     </div>
   )
 }