/**

 *  @file
 *  Utility classes to hide elements in different ways.
 */

/**

 *  Hide elements from all users.
 *

 *  Used for elements which should not be immediately displayed to any user. An
 *  example would be collapsible details that will be expanded with a click
 *  from a user. The effect of this class can be toggled with the jQuery show()
 *  and hide() functions.
 */
.hidden {
  display: none;
}

/**

 *  Hide elements visually, but keep them available for screen readers.
 *

 *  Used for information required for screen reader users to understand and use
 *  the site where visual display is undesirable. Information provided in this
 *  manner should be kept concise, to avoid unnecessary burden on the user.
 *  "!important" is used to prevent unintentional overrides.
 */
.visually-hidden {
  position: absolute !important;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  width: 1px;
  height: 1px;
  word-wrap: normal;
}

/**

 *  The .focusable class extends the .visually-hidden class to allow
 *  the element to be focusable when navigated to via the keyboard.
 */
.visually-hidden.focusable:active,
.visually-hidden.focusable:focus-within {
  position: static !important;
  overflow: visible;
  clip: auto;
  width: auto;
  height: auto;
}

/**

 *  Hide visually and from screen readers, but maintain layout.
 */
.invisible {
  visibility: hidden;
}