Here's how it works:
* Pero: This is the conjunction "but".
* Ahora: This means "now".
Let's look at some examples:
* "Quiero comer pizza, pero ahora estoy a dieta." (I want to eat pizza, but now I'm on a diet.)
* "Antes no me gustaba el café, pero ahora lo adoro." (Before, I didn't like coffee, but now I love it.)
* "Pensaba que no podría hacerlo, pero ahora me siento confiado." (I thought I couldn't do it, but now I feel confident.)
The phrase "pero ahora" emphasizes the change in situation or perspective, highlighting the difference between the past and present.