@vaadin/vaadin-lumo-styles/mixins/overlay.js

Lumo is a design system foundation for modern web applications, used by Vaadin components

/**
 * @license
 * Copyright (c) 2017 - 2026 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
import { issueWarning } from '@vaadin/component-base/src/warnings.js';
import { css, registerStyles } from '@vaadin/vaadin-themable-mixin/vaadin-themable-mixin.js';

issueWarning('Lumo .js mixins are deprecated and will be removed in V26');

const overlay = css`
  :host {
    inset: var(--vaadin-overlay-viewport-inset, var(--lumo-space-m));
    /* Workaround for Edge issue (only on Surface), where an overflowing vaadin-list-box inside vaadin-select-overlay makes the overlay transparent */
    /* stylelint-disable-next-line */
    outline: 0px solid transparent;
  }

  [part='overlay'] {
    background-color: var(--lumo-base-color);
    background-image: linear-gradient(var(--lumo-tint-5pct), var(--lumo-tint-5pct));
    border-radius: var(--lumo-border-radius-m);
    box-shadow:
      0 0 0 1px var(--lumo-shade-5pct),
      var(--lumo-box-shadow-m);
    color: var(--lumo-body-text-color);
    font-family: var(--lumo-font-family);
    font-size: var(--lumo-font-size-m);
    font-weight: 400;
    line-height: var(--lumo-line-height-m);
    letter-spacing: 0;
    text-transform: none;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  [part='content'] {
    padding: var(--lumo-space-xs);
  }

  [part='backdrop'] {
    background-color: var(--lumo-shade-20pct);
    animation: 0.2s lumo-overlay-backdrop-enter both;
    will-change: opacity;
  }

  @keyframes lumo-overlay-backdrop-enter {
    0% {
      opacity: 0;
    }
  }

  :host([closing]) [part='backdrop'] {
    animation: 0.2s lumo-overlay-backdrop-exit both;
  }

  @keyframes lumo-overlay-backdrop-exit {
    100% {
      opacity: 0;
    }
  }

  @keyframes lumo-overlay-dummy-animation {
    0% {
      opacity: 1;
    }

    100% {
      opacity: 1;
    }
  }
`;

registerStyles('', overlay, { moduleId: 'lumo-overlay' });

export { overlay };