Fix bootcamp and webinar action buttons

Bootcamp fixes:
- Change "Sudah Selesai" to "Selesai" (shorter, cleaner)
- Replace "Selanjutnya" button with "Beri Ulasan" when all lessons completed
- Makes more sense than "Lanjutkan" when there's nothing to continue

Webinar fixes:
- Check if webinar has ended based on event_start date
- Only show "Gabung Webinar" button if webinar hasn't ended AND has meeting link
- Show "Rekaman segera tersedia" badge for passed webinars without recording
- Only show recording player/video if recording_url exists

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/pages/ProductDetail.tsx

@@ -254,6 +254,9 @@ export default function ProductDetail() {
           </Button>
         );
       case 'webinar':
+        // Check if webinar has ended
+        const webinarEnded = product.event_start && new Date(product.event_start) <= new Date();
+
         if (product.recording_url) {
           return (
             <div className="space-y-4">
@@ -274,14 +277,25 @@ export default function ProductDetail() {
             </div>
           );
         }
-        return product.meeting_link ? (
-          <Button asChild size="lg" className="shadow-sm">
-            <a href={product.meeting_link} target="_blank" rel="noopener noreferrer">
-              <Video className="w-4 h-4 mr-2" />
-              Gabung Webinar
-            </a>
-          </Button>
-        ) : <Badge className="bg-primary text-primary-foreground">Rekaman segera tersedia</Badge>;
+
+        // Only show "Gabung Webinar" if webinar hasn't ended and has meeting link
+        if (!webinarEnded && product.meeting_link) {
+          return (
+            <Button asChild size="lg" className="shadow-sm">
+              <a href={product.meeting_link} target="_blank" rel="noopener noreferrer">
+                <Video className="w-4 h-4 mr-2" />
+                Gabung Webinar
+              </a>
+            </Button>
+          );
+        }
+
+        // Webinar has ended but no recording yet
+        if (webinarEnded) {
+          return <Badge className="bg-muted text-primary">Rekaman segera tersedia</Badge>;
+        }
+
+        return null;
       case 'bootcamp':
         return (
           <Button onClick={() => navigate(`/bootcamp/${product.slug}`)} size="lg" className="shadow-sm">