OverlaysGlass surface

HoverCard

Shows extra context on hover and focus.

View preview API reference View in Figma

FrameworksAstro · React · Elements

Registry commandlumen add HoverCard

InteractionNative markup

Design sourceLinked component node

See it and copy it

Framework example

Choose Astro, React, or Elements to compare native usage against the shared visual output. Each example assumes the framework-level setup is already complete.

Framework usage

Switch targets to compare the adapter code. The preview stays visually stable because all three packages share the same tokens and ui-* class contract.

---
import {
  Button,
  HoverCard
} from '@santi020k/lumen-astro'
---

<HoverCard>
  <Button variant="outline" data-ui-trigger>Preview maintainer</Button>
  <div>
    <strong>Santiago Molina</strong>
    <p>Maintainer of Lumen UI.</p>
  </div>
</HoverCard>

import { Button, HoverCard } from '@santi020k/lumen-react'

export const Example = () => (
  <>
    <HoverCard>
      <Button variant="outline" data-ui-trigger>Preview maintainer</Button>
      <div>
        <strong>Santiago Molina</strong>
        <p>Maintainer of Lumen UI.</p>
      </div>
    </HoverCard>
  </>
)

<script type="module">
  import { defineLumenElements } from '@santi020k/lumen-elements/define'

  defineLumenElements()
</script>

<lumen-hover-card>
  <lumen-button variant="outline" data-ui-trigger>Preview maintainer</lumen-button>
  <div>
    <strong>Santiago Molina</strong>
    <p>Maintainer of Lumen UI.</p>
  </div>
</lumen-hover-card>

Edit HoverCard in browser

Choose your target

Add this component

Choose the package for your runtime. All adapters share the Lumen stylesheet. Use the matching registry command when you want a local wrapper for that framework.

Glass

Add the glass prop to apply the shared blur, saturation, border, and highlight tokens. Glass reads best over vivid content, so place the surface above imagery or color.

Framework usage

Switch targets to compare the adapter code. The preview stays visually stable because all three packages share the same tokens and ui-* class contract.

---
import { HoverCard } from '@santi020k/lumen-astro'
---

<div class="docs-glass-demo docs-glass-demo--float">
  <HoverCard glass>
    <a href="/docs" data-ui-trigger>@santi020k</a>
    <div>
      <strong>Santiago Molina</strong>
      <p>The glass hover card floats as a frosted lens over the artwork behind it.</p>
    </div>
  </HoverCard>
</div>

import { HoverCard } from '@santi020k/lumen-react'

export const Example = () => (
  <>
    <div className="docs-glass-demo docs-glass-demo--float">
      <HoverCard glass>
        <a href="/docs" data-ui-trigger>@santi020k</a>
        <div>
          <strong>Santiago Molina</strong>
          <p>The glass hover card floats as a frosted lens over the artwork behind it.</p>
        </div>
      </HoverCard>
    </div>
  </>
)

<script type="module">
  import { defineLumenElements } from '@santi020k/lumen-elements/define'

  defineLumenElements()
</script>

<div class="docs-glass-demo docs-glass-demo--float">
  <lumen-hover-card glass>
    <a href="/docs" data-ui-trigger>@santi020k</a>
    <div>
      <strong>Santiago Molina</strong>
      <p>The glass hover card floats as a frosted lens over the artwork behind it.</p>
    </div>
  </lumen-hover-card>
</div>

Edit HoverCard in browser

API reference

Lumen-specific props and runtime attributes for the Astro primitive. React props follow the same names; Elements use equivalent kebab-case attributes where custom elements expose them.

Attribute	Values	Default	Description
glass	boolean \| "subtle" \| "strong"	false	Applies the tokenized liquid-glass surface treatment with backdrop-filter fallbacks; "subtle" and "strong" adjust the fill intensity.
data-ui-trigger	boolean attribute	-	Marks the child trigger that opens and closes the adjacent disclosure panel.
class, className	string	""	Merges custom classes with the generated ui-* root classes.
...native attributes	HTML attributes	-	Forwards standard attributes to the root element unless the component consumes them.