# HTTP to HTTPS redirect
server {
    listen 80;
    server_name systemsobscure.blog www.systemsobscure.blog;
    return 301 https://$server_name$request_uri;
}

# Main HTTPS server
server {
    listen 443 ssl http2;
    server_name systemsobscure.blog www.systemsobscure.blog;
    
    # SSL certificate paths
    ssl_certificate /etc/letsencrypt/live/systemsobscure.net/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/systemsobscure.net/privkey.pem;
    
    # SSL security hardening
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    
    # 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;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    
    # Document root
    root /var/www/systemsobscure.blog;
    index index.html;
    
    # Enable 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;
    
    # Handle client-side routing (SPA fallback)
    location / {
        try_files $uri $uri/ /index.html;
    }
    
    # Cache static assets for better performance
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }
    
    # Block access to hidden files (.env, .git, etc)
    location ~ /\. {
        deny all;
    }
}