Fixes: https://github.com/go-gitea/gitea/issues/29981. Introduce
`.secondary-nav` as a universal way for styling and margin adjustments
inside `.page-content`.
If the first child of `.page-content` is `.secondary-nav`, we add margin
below it, otherwise we add padding to the first child. Notable changes:
- `--color-header-wrapper` is replaced with `--color-secondary-nav-bg`.
- `navbar` class is removed.
---------
Co-authored-by: Giteabot <teabot@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This PR introduces a new UI element type for Gitea called `flex-item`.
It consists of a horizontal card with a leading, main and trailing part:

The idea behind it is that in Gitea UI, we have many cases where we use
this kind of layout, but it is achieved in many different ways:
- grid layout
- `.ui.list` with additional hacky flexbox
- `.ui.key.list` - looks to me like a style set originally created for
ssh/gpg key list, was used in many other places
- `.issue.list` - created for issue cards, used in many other places
- ...
This new style is based on `.issue.list`, specifically the refactoring
of it done in #25750.
In this PR, the new element is introduced and lots of templates are
being refactored to use that style. This allows to remove a lot of
page-specific css, makes many of the elements responsive or simply
provides a cleaner/better-looking way to present information.
A devtest section with the new style is also available.
<details>
<summary>Screenshots (left: before, right: after)</summary>



















</details>
---------
Co-authored-by: Giteabot <teabot@gitea.io>
This is my first pr, there are many things I don't understand very well,
I am very sorry, I rearranged the code and opened this new pr.
Now:

Improvements to the notification icon and `<nav>`:
- Add a opaque color for header hover and use it, allowing the border to
be the right color on hover (sadly, not otherwise possible with CSS, not
even `color-mix`).
- Increase font size by 1px
- Use flexbox for slightly better text centering
- Reduce padding of user and add repo button, add margin on right side
of user menu
- Remove the `following bar` wrapper on navbar
<img width="176" alt="Screenshot 2023-06-07 at 00 07 08"
src="23cdc3d6-7f63-49df-bec3-f2e75e32a304">
<img width="63" alt="Screenshot 2023-06-07 at 00 07 14"
src="fae602c2-4467-4d50-b1ec-56317843f9a2">
<img width="84" alt="Screenshot 2023-06-07 at 00 07 36"
src="c48141b8-0b3c-48cc-846a-3a272524dbdb">
<img width="329" alt="Screenshot 2023-06-07 at 00 25 10"
src="cda612f1-426e-466b-a351-fc992bfd18fd">
<img width="186" alt="Screenshot 2023-06-07 at 00 35 45"
src="04484a2e-9bbf-493c-aa26-8e936da008fa">
<img width="797" alt="Screenshot 2023-06-07 at 16 57 40"
src="e7ccb672-5807-4cb6-b306-b18ae0c7e321">
View diff:
https://github.com/go-gitea/gitea/pull/24738/files?diff=unified&w=1
Improve layout and functionality in review area:
<img width="439" alt="Screenshot 2023-05-15 at 20 10 01"
src="be10452b-5829-4927-8801-7b26a57b3dbd">
Remove the "Reviewers" timeline box that appears before the merge box.
it's a duplicate of the top-right review area and all functionality of
it has been moved to the other box:
<img width="868" alt="Screenshot 2023-05-15 at 19 39 31"
src="35489445-e54b-40d3-b3cf-38d029478f96">
Increase timeline item vertical padding from 12px to 16px:
<img width="449" alt="Screenshot 2023-05-15 at 19 43 50"
src="919c4f9d-a485-4f51-b08c-2c0fc714a413">
---------
Co-authored-by: Giteabot <teabot@gitea.io>
I am not sure what "new-menu" means, but I think we need to fix these
problems:
1. it shouldn't have "stackable", which makes the items stacked when
width is small. the `new-menu` already has `overflow: auto`
2. `justify-content: center` doesn't work with `overflow: auto` (for
small width), so use `margin: auto`
*
https://bhch.github.io/posts/2021/04/centring-flex-items-and-allowing-overflow-scroll/
3. `runner-new-menu` is dead code (copying & pasting ?)
Ran most of the Less files through the Less compiler and Prettier and
then followed up with a round of manual fixes.
The Less compiler had unfortunately stripped all `//` style comments
that I had to restore (It did preserve `/* */` comments). Other fixes
include duplicate selector removal which were revealed after the
transpilation and which weren't caught by stylelint before but now are.
Fixes: https://github.com/go-gitea/gitea/issues/15565