Style.css not workign in a classy subtheme

I created a subtheme based on classy with this .info file:

name: youverify_theme
type: theme
description: This is a sub theme of Classy
core: 8.x
core_version_requirement: ^8 || ^9
# Defines the base theme
base theme: classy
# Defines libraries group in which we can add css/js.
libraries:
  - youverify_theme/global-styling
# Regions
regions:
  header: Header
  featured: Featured
  content: Content
  sidebar_first: First sidebar
  sidebar_second: Second sidebar
  footer: Footer

and this libraries file:

*.libraries.yml

global-styling:
version: 1.0
  css:
    theme:
      css/style.css: {}

my folder structure is:

youverify_theme
  css
    style.css
  youverify_theme.info.yml
  youverify_theme.libraries.yml

but when I create some styling in style.css such as:

.region-header{
    background-color:blue;
}

body{
    background-color: blue;
}

It's not updating anything, do you know what could be the problem? Thank you in advance :)