Custom css sanitizes variables

[BANanaD3V]

Expected Behavior

Custom css should keep variables inside of :root

Current Behavior

Custom css field removes css variables in root that stops me from theming feishin

Steps to Reproduce

1. Go to custom css
2. Paste something containing variables, for example:

:root {
    --secondary-color: #ff7878;
    --success-color: green;
    --warning-color: orange;
    --danger-color: #cc3232;
    --generic-border-color: #3232324d;
    --main-bg: #1e1e2e;
    --main-bg-transparent: 21,18,18;
    --main-fg: #e1e1e1;
    --main-fg-secondary: #969696;
    --window-bar-bg: #101010;
    --window-bar-fg: #fff;
}

3. Preview removes variables, saving also removes them

Possible Solution

Do not remove variables

Context

Can't theme feishin

Application version

0.11.1

Operating System and version

NixOS 24.11, Electron app

Server and Version

Navidrome 0.53.3

Node Version (if developing locally)

No response