Spa-like details such as glass tile and soothing colors are a trend in home bathrooms, as in this one by interior designer Lori Graham . When it comes to the latest in bathrooms, spa- inspired spaces rule . Goodbye, fussy details. Hello, Zen oasis. “Turning your bathroom into something you might see at a luxury resort is really big right now,” says Shannon Kadwell, a designer for Anthony Wilder Design/Build in Cabin John. Spa-like details range from showers with multiple body sprays and rainfall “water tiles” to walls bedecked with dazzling glass tile . But the trend goes beyond finishes and fixtures. “In years prior, a bathroom was just a shower, a toilet, and a sink,” Kadwell says. “The modern bathroom is a multi-function room with separate areas.” Think distinct but connected spaces designated for cleaning, changing, relaxing, and even admiring the scenery. A house’s master suite, she says, has become a living space in which the bathroom and bedroom are connected via dressing are...