Hey See22,
Glad to hear!
I will go over the questions in the same order:
1). By design, the portfolio items open as new pages in Kanso; the only project format that opens in the same page, as an overlay window, is “image” (you can read more about project formats in Kanso on pages 9-10 of the theme manual).
2). There is no back-end setting to tell the portfolio filter to appear on top of the grid, yet it can be achieved by moving the code passage that generates the filter; if you want, you can tell me whether you have the one-page template or a single portfolio page in mind, and I will provide more detailed instructions.
3). Please use the “Portfolio items – mouse-hover opacity” setting in the “Style: Content, Widgets” tab of the Theme Options panel to change the opacity of the overlays of portfolio grid items.
Sincerely,
Andrii / Satori Studio