Hello,
1) Use Theme Options > Styling > LIGHT BUTTONS settings to change the add to cart styles on the category pages
2) Use Custom CSS section to add your custom code https://prnt.sc/213p9xw
3) Add below code to Theme Options > Custom CSS and change right/left padding according to your needs
.content-product .button {
padding: 0.91rem 3rem;
}
Regards