refactor: use _fresh as build cache directory

.gitignore

@@ -9,5 +9,3 @@
 _fresh/
 # npm dependencies
 node_modules/
-
-.cache/

build.ts

@@ -3,6 +3,7 @@ import { ensureDir } from '$std/fs/mod.ts'
 import { parse, resolve } from '$std/path/mod.ts'
 
 console.log('building styles starts')
+await ensureDir('_fresh')
 
 try {
 	//prevent Deno from exiting before bundle
@@ -30,8 +31,7 @@ try {
 				const response = await fetch(specifier)
 				const file = await response.text()
 
-				await ensureDir('.cache')
+				const filename = `_fresh/${crypto.randomUUID()}`
-				const filename = `.cache/${crypto.randomUUID()}.css`
 				await Deno.writeTextFile(filename, file)
 				cssImports.set(specifier, filename)
 				return filename
@@ -40,11 +40,11 @@ try {
 	})
 
 	await Deno.writeTextFile(
-		'./static/styles.css',
+		'./_fresh/styles.css',
 		new TextDecoder().decode(code),
 	)
 	await Deno.writeTextFile(
-		'./static/styles.map.css',
+		'./_fresh/styles.map.css',
 		new TextDecoder().decode(map!),
 	)
 } catch (error) {