server {
    listen 80;
    server_name localhost;

    # API 代理到后端服务（K8s 内部通信）
    location /api {
        proxy_pass http://airlabs-manage-backend:8000;
        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 / {
        root /usr/share/nginx/html;
        index index.html index.htm;
        # SPA 路由刷新 404 的关键配置
        try_files $uri $uri/ /index.html;
    }

    # 静态资源缓存
    location /assets/ {
        root /usr/share/nginx/html;
        expires 7d;
        add_header Cache-Control "public";
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}