== Goal ==
* Ask users to provide sources before they start writing.
* Help users understand what counts as a good source.
* Use community-defined lists of recommended and discouraged sources.
== When to show ==
This step appears after the notability check (T415485). If the user passed all community checks, they land here. The user can add links to sources that support their topic. By default this step is optional, the user can skip it and add sources later while writing. If the article type carries the sources flag (defined in T415485), this step becomes mandatory, the user must provide sources before they can continue.
== Core flow ==
# User sees a prompt explaining why sources matter.
# User pastes one or more URLs.
# System may show feedback based on community source lists.
# User continues to next step.
== Designs ==
{F72393942 size=full}
States shown left to right:
1. Empty: input field, tips expanded, Continue enabled
2. URL pasted: checking source against community lists
3. Source approved: green checkmark, source title shown
4. Discouraged URL pasted: checking
5. Source not recommended: warning shown, tips collapsed
6. Source not recommended + tips expanded: shows what works and what doesn't
== Layout ==
=== Mobile ===
* Full screen page.
* Header: back arrow + title.
* Brief text: what makes a good source.
* Input field for URL.
* List of added URLs below.
* Continue button.
=== Tablet/desktop ===
* Single centered column (600–720px wide).
* Same content as mobile.