nginx.conf

server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html;

    # Handle WASM files with proper MIME type
    location ~* \.wasm$ {
        add_header Content-Type "application/wasm";
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # Handle other static files
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # Disable caching for HTML files to prevent cache issues
    location ~* \.html$ {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
        try_files $uri =404;
    }

    # SPA fallback - serve index.html for all routes that don't match files
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/javascript
        application/xml+rss
        application/json
        application/wasm;

    # Error pages
    error_page 404 /index.html;
}