Empty CSS when creating a new theme, not extending the default

@import '../../../../vendor/filament/filament/resources/css/theme.css';

@config './tailwind.config.js';

.fi-sidebar {
    background: white;
    border-right: 1px solid #E4E4E5;
}

.dark .fi-sidebar {
    background: #18181B;
    border-right: 1px solid #2F2F31;
}

@import 'index.css';

@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
    html {
        -webkit-tap-highlight-color: transparent;
    }

    :root.dark {
        color-scheme: dark;
    }
}