All safe after earthquake. I misread your drawing. You have lots of space. I would turn the vanity so that the sinks are opposite the entry. No windows were shown, so I am assuming this is a windowless bathroom -- can you add a solartube for natural light? I am not a fan of putting the toilet in a closet -- makes me feel claustrophobic. I am attaching a proposed plan. Enclosing the toilet will make the room feel less spacious. Consider an etched glass panel to "hide" the toilet space.

Zellige 5x5 Snow White shower wall sample - top left, Calacatta 12x24 bathroom floor sample - bottom right, Calacatta 2” hexagon shower floor - sample/concept top right (these pictured are 4”, here for a visual) Walnut Vanity sample, chrome hardware and mirror, brass sconces and vanity drawer pulls

Tub to Shower remodel

I think either the shower tile or the floor tile needs to be the star - having both will make it look busy. I would also would add a stained wood vanity to warm the space up a bit - but that’s just my taste - it seems a bit ”cold” to me.