server {
    listen 80;
    server_name ppt24.com www.ppt24.com;
    root /var/www/ppt24.com/frontend/build;
    index index.html;

    # Redirect requests for non-existent files to index.html (SPA support)
    location / {
        try_files $uri $uri/ /index.html;
    }

    # API requests proxy to backend
    location /api {
        proxy_pass http://localhost:5000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
}