server {
    listen 3000;
    listen 80;
    server_name localhost;
    
    root /usr/share/nginx/html;
    index index.html;
    
    # Enable gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    
    # Proxy to Agent V3 API
    location /agent-v3/ {
        resolver 127.0.0.11 valid=30s;
        set $agent_upstream didi-agent-v3;
        rewrite ^/agent-v3/(.*) /$1 break;
        proxy_pass http://$agent_upstream:24803;
        proxy_http_version 1.1;
        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;
    }

    # Proxy to Framework API
    location /framework/ {
        resolver 127.0.0.11 valid=30s;
        set $framework_upstream didi-framework;
        rewrite ^/framework/(.*) /$1 break;
        proxy_pass http://$framework_upstream:3005;
        proxy_http_version 1.1;
        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;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }
    
    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
    
    # 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;
}