When you think of a man cave, what comes to mind? Aggressive deer heads slapped above the mantel? Unsightly sports paraphernalia scattered across the walls? Bulky suede sofas taking up half the room?

The concept of a “man cave” has long been associated with dim, dark spaces; ultramasculine decor; huge TV screens; and perhaps a few empty beer cans. But now, a much more sophisticated decor trend is ...