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fix: add CSS cascade layer support #5849

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fix: add CSS cascade layer support #5849

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b782778
fix: add CSS cascade layer support
batuhan-bas Jan 10, 2026
159e516
Merge branch 'v4' into fix/css-cascade-layer-support
batuhan-bas Jan 12, 2026
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10 changes: 9 additions & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,12 @@
"style": "./dist/runtime/index.css",
"import": "./dist/module.mjs"
},
"./sources": {
"style": "./dist/runtime/sources.css"
},
"./theme": {
"style": "./dist/runtime/theme.css"
},
"./unplugin": {
"types": "./dist/unplugin.d.mts",
"import": "./dist/unplugin.mjs"
Expand Down Expand Up @@ -88,7 +94,9 @@
}
},
"imports": {
"#build/ui.css": "./.nuxt/ui.css"
"#build/ui.css": "./.nuxt/ui.css",
"#build/ui-sources.css": "./.nuxt/ui-sources.css",
"#build/ui-theme.css": "./.nuxt/ui-theme.css"
},
"bin": {
"nuxt-ui": "./cli/index.mjs"
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2 changes: 2 additions & 0 deletions src/runtime/sources.css
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
@import '#build/ui-sources.css';
@source './components';
54 changes: 54 additions & 0 deletions src/runtime/theme.css
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@@ -0,0 +1,54 @@
@import '#build/ui-theme.css';
@import './keyframes.css';

@variant light (&:where(.light, .light *));
@variant dark (&:where(.dark, .dark *));

@layer theme {
:root, :host {
--ui-header-height: --spacing(16);
}

:root, :host, .light {
--ui-text-dimmed: var(--ui-color-neutral-400);
--ui-text-muted: var(--ui-color-neutral-500);
--ui-text-toned: var(--ui-color-neutral-600);
--ui-text: var(--ui-color-neutral-700);
--ui-text-highlighted: var(--ui-color-neutral-900);
--ui-text-inverted: white;

--ui-bg: white;
--ui-bg-muted: var(--ui-color-neutral-50);
--ui-bg-elevated: var(--ui-color-neutral-100);
--ui-bg-accented: var(--ui-color-neutral-200);
--ui-bg-inverted: var(--ui-color-neutral-900);

--ui-border: var(--ui-color-neutral-200);
--ui-border-muted: var(--ui-color-neutral-200);
--ui-border-accented: var(--ui-color-neutral-300);
--ui-border-inverted: var(--ui-color-neutral-900);

--ui-radius: 0.25rem;
--ui-container: 80rem;
}

.dark {
--ui-text-dimmed: var(--ui-color-neutral-500);
--ui-text-muted: var(--ui-color-neutral-400);
--ui-text-toned: var(--ui-color-neutral-300);
--ui-text: var(--ui-color-neutral-200);
--ui-text-highlighted: white;
--ui-text-inverted: var(--ui-color-neutral-900);

--ui-bg: var(--ui-color-neutral-900);
--ui-bg-muted: var(--ui-color-neutral-800);
--ui-bg-elevated: var(--ui-color-neutral-800);
--ui-bg-accented: var(--ui-color-neutral-700);
--ui-bg-inverted: white;

--ui-border: var(--ui-color-neutral-800);
--ui-border-muted: var(--ui-color-neutral-700);
--ui-border-accented: var(--ui-color-neutral-700);
--ui-border-inverted: white;
}
}
90 changes: 90 additions & 0 deletions src/templates.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -187,6 +187,96 @@ export function getTemplates(options: ModuleOptions, uiConfig: Record<string, an
return sources.join('\n')
}

// Separate template for @source directives (cannot be nested in CSS layers)
templates.push({
filename: 'ui-sources.css',
write: true,
getContents: async () => {
return await generateSources()
}
})

// Separate template for theme styles (can be used with CSS cascade layers)
templates.push({
filename: 'ui-theme.css',
write: true,
getContents: async () => {
const prefix = options.theme?.prefix ? `${options.theme.prefix}:` : ''

return `@layer base {
body {
@apply ${prefix}antialiased ${prefix}text-default ${prefix}bg-default ${prefix}scheme-light ${prefix}dark:scheme-dark;
}
}

@theme static {
--color-old-neutral-50: ${colors.neutral[50]};
--color-old-neutral-100: ${colors.neutral[100]};
--color-old-neutral-200: ${colors.neutral[200]};
--color-old-neutral-300: ${colors.neutral[300]};
--color-old-neutral-400: ${colors.neutral[400]};
--color-old-neutral-500: ${colors.neutral[500]};
--color-old-neutral-600: ${colors.neutral[600]};
--color-old-neutral-700: ${colors.neutral[700]};
--color-old-neutral-800: ${colors.neutral[800]};
--color-old-neutral-900: ${colors.neutral[900]};
--color-old-neutral-950: ${colors.neutral[950]};
}

@theme default inline {
${[...(options.theme?.colors || []).filter(color => !colors[color as keyof typeof colors]), 'neutral'].map(color => [50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 950].map(shade => `--color-${color}-${shade}: var(--ui-color-${color}-${shade});`).join('\n\t')).join('\n\t')}
${options.theme?.colors?.map(color => `--color-${color}: var(--ui-${color});`).join('\n\t')}
--radius-xs: calc(var(--ui-radius) * 0.5);
--radius-sm: var(--ui-radius);
--radius-md: calc(var(--ui-radius) * 1.5);
--radius-lg: calc(var(--ui-radius) * 2);
--radius-xl: calc(var(--ui-radius) * 3);
--radius-2xl: calc(var(--ui-radius) * 4);
--radius-3xl: calc(var(--ui-radius) * 6);
--text-color-dimmed: var(--ui-text-dimmed);
--text-color-muted: var(--ui-text-muted);
--text-color-toned: var(--ui-text-toned);
--text-color-default: var(--ui-text);
--text-color-highlighted: var(--ui-text-highlighted);
--text-color-inverted: var(--ui-text-inverted);
--background-color-default: var(--ui-bg);
--background-color-muted: var(--ui-bg-muted);
--background-color-elevated: var(--ui-bg-elevated);
--background-color-accented: var(--ui-bg-accented);
--background-color-inverted: var(--ui-bg-inverted);
--background-color-border: var(--ui-border);
--border-color-default: var(--ui-border);
--border-color-muted: var(--ui-border-muted);
--border-color-accented: var(--ui-border-accented);
--border-color-inverted: var(--ui-border-inverted);
--border-color-bg: var(--ui-bg);
--ring-color-default: var(--ui-border);
--ring-color-muted: var(--ui-border-muted);
--ring-color-accented: var(--ui-border-accented);
--ring-color-inverted: var(--ui-border-inverted);
--ring-color-bg: var(--ui-bg);
--ring-offset-color-default: var(--ui-border);
--ring-offset-color-muted: var(--ui-border-muted);
--ring-offset-color-accented: var(--ui-border-accented);
--ring-offset-color-inverted: var(--ui-border-inverted);
--ring-offset-color-bg: var(--ui-bg);
--divide-color-default: var(--ui-border);
--divide-color-muted: var(--ui-border-muted);
--divide-color-accented: var(--ui-border-accented);
--divide-color-inverted: var(--ui-border-inverted);
--divide-color-bg: var(--ui-bg);
--outline-color-default: var(--ui-border);
--outline-color-inverted: var(--ui-border-inverted);
--stroke-default: var(--ui-border);
--stroke-inverted: var(--ui-border-inverted);
--fill-default: var(--ui-border);
--fill-inverted: var(--ui-border-inverted);
}
`
}
})

// Combined template for backwards compatibility
templates.push({
filename: 'ui.css',
write: true,
Expand Down
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