@vaadin/vaadin-lumo-styles/src/components/side-nav-item.css

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

/**
 * @license
 * Copyright (c) 2000 - 2026 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
@media lumo_components_side-nav-item {
  :host {
    display: block;
    --_focus-ring-color: var(--vaadin-focus-ring-color, var(--lumo-primary-color-50pct));
    --_focus-ring-width: var(--vaadin-focus-ring-width, 2px);
  }

  :host([hidden]),
  [hidden] {
    display: none !important;
  }

  :host([disabled]) {
    pointer-events: none;
  }

  [part='content'] {
    display: flex;
    align-items: center;
  }

  [part='link'] {
    flex: auto;
    min-width: 0;
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
    font: inherit;
    width: 100%;
    gap: var(--lumo-space-xs);
    padding: var(--lumo-space-s);
    padding-inline-start: calc(var(--lumo-space-s) + var(--_child-indent, 0px));
    border-radius: var(--lumo-border-radius-m);
    transition:
      background-color 140ms,
      color 140ms;
    cursor: var(--lumo-clickable-cursor, default);
    min-height: var(--lumo-icon-size-m);
  }

  button {
    appearance: none;
    flex: none;
    position: relative;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
  }

  [part='children'] {
    padding: 0;
    margin: 0;
    list-style-type: none;
  }

  :host(:not([has-children])) button {
    display: none !important;
  }

  slot[name='prefix'],
  slot[name='suffix'] {
    flex: none;
  }

  slot:not([name]) {
    display: block;
    flex: auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin: 0 var(--lumo-space-s);
  }

  [part='link'][href] {
    cursor: pointer;
  }

  :host([disabled]) [part='link'] {
    color: var(--lumo-disabled-text-color);
  }

  [part='toggle-button'] {
    margin-inline-end: calc(var(--lumo-space-xs) * -1);
    width: var(--lumo-size-s);
    height: var(--lumo-size-s);
  }

  :host([has-children]) [part='content'] {
    padding-inline-end: var(--lumo-space-s);
  }

  @media (any-hover: hover) {
    [part='link']:hover {
      color: var(--lumo-header-text-color);
    }

    [part='toggle-button']:hover {
      color: var(--lumo-body-text-color);
    }
  }

  [part='link']:active:focus {
    background-color: var(--lumo-contrast-5pct);
  }

  [part='toggle-button']::before {
    content: var(--lumo-icons-dropdown);
    transform: rotate(-90deg);
    transition: transform 140ms;
  }

  :host([dir='rtl']) [part='toggle-button']::before {
    transform: rotate(90deg);
  }

  :host([expanded]) [part='toggle-button']::before {
    transform: none;
  }

  [part='link'],
  [part='toggle-button'] {
    outline: none;
  }

  [part='link']:focus-visible,
  [part='toggle-button']:focus-visible {
    border-radius: var(--lumo-border-radius-m);
    box-shadow: 0 0 0 var(--_focus-ring-width) var(--_focus-ring-color);
  }

  [part='link']:active {
    color: var(--lumo-header-text-color);
  }

  slot[name='prefix']::slotted(:is(vaadin-icon, [class*='icon'])) {
    padding: 0.1em;
    flex-shrink: 0;
    color: var(--lumo-contrast-60pct);
  }

  :host([disabled]) slot[name='prefix']::slotted(:is(vaadin-icon, [class*='icon'])) {
    color: var(--lumo-disabled-text-color);
  }

  :host([current]) slot[name='prefix']::slotted(:is(vaadin-icon, [class*='icon'])) {
    color: inherit;
  }

  slot[name='children'] {
    --_child-indent: calc(var(--_child-indent-2, 0px) + var(--vaadin-side-nav-child-indent, var(--lumo-space-l)));
  }

  slot[name='children']::slotted(*) {
    --_child-indent-2: var(--_child-indent);
  }

  :host([current]) [part='content'] {
    background-color: var(--lumo-primary-color-10pct);
    color: var(--vaadin-selection-color-text, var(--lumo-primary-text-color));
    border-radius: var(--lumo-border-radius-m);
  }

  .sr-only {
    border: 0 !important;
    clip: rect(1px, 1px, 1px, 1px) !important;
    clip-path: inset(50%) !important;
    height: 1px !important;
    margin: -1px !important;
    overflow: hidden !important;
    padding: 0 !important;
    position: absolute !important;
    width: 1px !important;
    white-space: nowrap !important;
  }
}