Single pole switch with lighting "zones"?
This can be done with wireless smart bulbs (or fixtures) and a remote switch in place of your current light switch.  I'm going to describe how to do it with the Phillips Hue series, since I'm more familiar with them, but other brands will probably work just as well.

For the lights themselves, if you have not already bought the fixtures, you can get Hue recessed fixtures with built-in communication and dimming capability, and you'll never have to change a bulb. 



If you already have fixtures, you can simply add smart bulbs to them, but make sure they fit and will cool adequately! 



Then, to control it at the location of your current light switch, install a wall-mounted remote.



For your current light switch, you can either leave it in place as a way to disable the whole system, or remove and bypass it to supply the Hue fixtures with always-on power and let them turn themselves on and off remotely (recommended if you want to use any other smart features, like timer on/off, or google home/alexa connectivity).  If you remove the current switch, you can install the remote over the top of a cover plate.  Otherwise, you can install the remote on the wall next to the current switch.

Lastly, you will need a Hue hub to tie it all together.  You can place this wherever you want -- it need not be on the same circuit as the lights.  This will also give you voice control of the lights.  



You can learn more about the Hue line here.  Again, I don't mean this as a specific endorsement -- Hue are popular and capable, but not the cheapest, and there are competitors that are also well regarded.