server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # Serve static files
    location / {
        # Try to serve the exact file, then directory, otherwise fall back to index.html
        # This ensures accessing / or any SPA route returns /index.html
        try_files $uri $uri/ /index.html;
    }

    # Proxy all API requests to backend
    location ~ ^/(accounts|journals|ledger|trial-balance|opening-balances|general-ledger|payroll|users|month-locks|year-locks|cash|file-upload|egov) {
        proxy_pass http://backend:18080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}