How to put environment variables in wrangler

Hi Guys I'm very new in cloudflare ecosystem, i just build sveltekit website and deploy it in cloudflare pages and so far it is working perfectly with supabase as a backend. recently i also have a needs where i need to make a rest api, and i try to use hono js and deploy it in cloudflare workers. the questions is how i can put environment variables in my projects? and how i can access it in my index.ts?