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

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

/**
 * @license
 * Copyright (c) 2017 - 2025 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
import '../spacing.js';
import '../style.js';
import { css, registerStyles } from '@vaadin/vaadin-themable-mixin/vaadin-themable-mixin.js';
import { overlay } from './overlay.js';

const menuOverlayCore = css`
  :host([opening]),
  :host([closing]) {
    animation: 0.14s lumo-overlay-dummy-animation;
  }

  [part='overlay'] {
    will-change: opacity, transform;
  }

  :host([opening]) [part='overlay'] {
    animation: 0.1s lumo-menu-overlay-enter ease-out both;
  }

  @keyframes lumo-menu-overlay-enter {
    0% {
      opacity: 0;
      transform: translateY(-4px);
    }
  }

  :host([closing]) [part='overlay'] {
    animation: 0.1s lumo-menu-overlay-exit both;
  }

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

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

const menuOverlayExt = css`
  /* Small viewport (bottom sheet) styles */
  /* Use direct media queries instead of the state attributes ([phone] and [fullscreen]) provided by the elements */
  @media (max-width: 450px), (max-height: 450px) {
    :host {
      top: 0 !important;
      right: 0 !important;
      bottom: var(--vaadin-overlay-viewport-bottom, 0) !important;
      left: 0 !important;
      align-items: stretch !important;
      justify-content: flex-end !important;
    }

    [part='overlay'] {
      max-height: 50vh;
      width: 100vw;
      border-radius: 0;
      box-shadow: var(--lumo-box-shadow-xl);
    }

    /* The content part scrolls instead of the overlay part, because of the gradient fade-out */
    [part='content'] {
      padding: 30px var(--lumo-space-m);
      max-height: inherit;
      box-sizing: border-box;
      -webkit-overflow-scrolling: touch;
      overflow: auto;
      -webkit-mask-image: linear-gradient(transparent, #000 40px, #000 calc(100% - 40px), transparent);
      mask-image: linear-gradient(transparent, #000 40px, #000 calc(100% - 40px), transparent);
    }

    [part='backdrop'] {
      display: block;
    }

    /* Animations */

    :host([opening]) [part='overlay'] {
      animation: 0.2s lumo-mobile-menu-overlay-enter cubic-bezier(0.215, 0.61, 0.355, 1) both;
    }

    :host([closing]),
    :host([closing]) [part='backdrop'] {
      animation-delay: 0.14s;
    }

    :host([closing]) [part='overlay'] {
      animation: 0.14s 0.14s lumo-mobile-menu-overlay-exit cubic-bezier(0.55, 0.055, 0.675, 0.19) both;
    }
  }

  @keyframes lumo-mobile-menu-overlay-enter {
    0% {
      transform: translateY(150%);
    }
  }

  @keyframes lumo-mobile-menu-overlay-exit {
    100% {
      transform: translateY(150%);
    }
  }
`;

const menuOverlay = [overlay, menuOverlayCore, menuOverlayExt];

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

export { menuOverlayCore, menuOverlay };