Document Card Select interfaces

content/guides/01.data-model/3.interfaces.md

@@ -377,6 +377,49 @@ Radio button input that allows users to select a single value from multiple choi
 | Choices       | Options for the radio buttons. Each option contains text that is displayed to the user and a value that is stored. |
 | Allow Other   | Allow user to enter custom values other than preset values.                                                        |
 
+### Card Select
+
+![A Card Select field with three cards, each with an icon, label, and description. The Video card is selected.](/img/3d98e798-d5e4-4aee-92bc-e6700ebc14fa.png)
+
+Select a single value from a grid of cards. Each card shows a label, an optional description, and an icon or image.
+
+| Configuration | Options                                                                                                    |
+| ------------- | ---------------------------------------------------------------------------------------------------------- |
+| Types         | `String`, `Integer`, `Big Integer`, `Float`                                                                |
+| Choices       | Options for the cards. Each choice contains text that is displayed to the user and a value that is stored. |
+| Card Size     | Size of each card. `Small`, `Medium`, or `Large`. Defaults to `Medium`.                                    |
+
+Each choice has further configuration options.
+
+| Configuration | Options                                                                                                   |
+| ------------- | --------------------------------------------------------------------------------------------------------- |
+| Text          | Label shown on the card.                                                                                  |
+| Value         | Value stored when the card is selected.                                                                   |
+| Description   | Short text shown below the label.                                                                         |
+| Icon Type     | Show an `Icon` or an `Image` on the card. Defaults to `Icon`.                                             |
+| Icon          | Icon shown on the card when **Icon Type** is `Icon`.                                                      |
+| Image         | Image shown on the card when **Icon Type** is `Image`. Upload a file or select one from the file library. |
+
+When there are more than ten choices, a search input appears above the cards to filter them by label.
+
+For long lists of around 20 or more choices, use [Dropdown](#dropdown) or [Dropdown (Multiple)](#dropdown-multiple) instead to keep the form compact.
+
+### Card Select (Multiple)
+
+![A Card Select (Multiple) field with three cards. The Design and Development cards are selected.](/img/e958abad-e25d-40cf-838b-3db81aa8801f.png)
+
+Select multiple values from a grid of cards.
+
+| Configuration | Options                                                                                                    |
+| ------------- | ---------------------------------------------------------------------------------------------------------- |
+| Types         | `JSON`, `CSV`                                                                                              |
+| Choices       | Options for the cards. Each choice contains text that is displayed to the user and a value that is stored. |
+| Card Size     | Size of each card. `Small`, `Medium`, or `Large`. Defaults to `Medium`.                                    |
+
+Choices use the same options as [Card Select](#card-select). The search input also appears when there are more than ten choices.
+
+To select cards with the keyboard, use the arrow keys to move focus between cards and press **Space** to toggle the focused card. Press **Tab** to move focus out of the group.
+
 ## Relational
 
 ### File