Text shadow looks odd on buttons.

[Mafrans]

The text on buttons has a very harsh text shadow that doesn't seem to appear anywhere else on the website and makes the text occasionally difficult to read.

If the purpose of the text shadow is to introduce additional contrast to the background I would suggest either reducing its opacity and increasing the radius to make the shadow less harsh or simply reconsidering the background gradient.

Example, lower opacity+bigger radius:

Example, higher contrast background colors:

Another option for lighter backgrounds could be to introduce a secondary button color which has a lower contrast against light backgrounds background, allowing for the text to retain its relative contrast to both the dark and light backgrounds without having to compromise.

Examples: