## Which issue does this PR close?
NA
## Rationale for this change
I just noticed that an existing css was forcing extra padding in the
navbar, which resulted in breaking the navbar ui in certain small screen
(mobile) devices.
| Old | New (fixed) |
|:---:|:------------:|
| <img width="384" height="120" alt="Screenshot 2025-10-31 at 14-22-44
DataFrame API — Apache DataFusion documentation"
src="https://github.com/user-attachments/assets/c4e23471-cfde-4988-b887-13060da9faf1"
/> | <img width="384" height="117" alt="Screenshot 2025-10-31 at
14-23-19 DataFrame API — Apache DataFusion documentation"
src="https://github.com/user-attachments/assets/152c7b8d-cf0e-4a62-a616-264398d074a1"
/> |
*notice how the right side navbar element is breaking out of the layout
To replicate this issue (firefox-browser) :
- Open https://datafusion.apache.org/ in "responsive design mode"
(ctrl+shift+m)
- Select "Galaxy S20 Android 11" or "iPhone 12/13 + Pro iOS 14.6" ...etc
device.
## What changes are included in this PR?
Removed an existing css that was responsible for this behavior.
## Which issue does this PR close?
- Closes#18190.
## What changes are included in this PR?
This PR adds a new asset (original_dark.svg) which is similar to
original.svg with just a change in text color from black to white, to
support proper logo display in dark mode. It also updates the relevant
files to ensure the correct logo variant is shown depending on the theme
(light or dark).
<img width="3200" height="1632" alt="Screenshot 2025-10-21 at 16-49-35
Apache DataFusion — Apache DataFusion documentation"
src="https://github.com/user-attachments/assets/b44a6e38-f7c6-4787-b35a-2361ed1ec9a8"
/>
 
<img width="3200" height="1632" alt="Screenshot 2025-10-21 at 16-49-43
Apache DataFusion — Apache DataFusion documentation"
src="https://github.com/user-attachments/assets/98953a0a-b2eb-4dc7-8acc-018f78a1730d"
/>
* logo images are added
* update guide
* add new image
* Update readme
* Update images
* Move old logo related images to under old_logo folder
---------
Co-authored-by: Mustafa Akur <mustafa.akur@synnada.ai>
* consolidate datafusion docs with sphinx
* added python doc
* combined, cli, user-guide and specification docs into a single datafusion doc
Co-authored-by: Jiayu Liu <Jimexist@users.noreply.github.com>
Nuno Faria