refine this existing single storey home by redesigning the roof to create a modern barn style composition with multiple intersecting gables keep the overall building footprint layout and garage position unchanged replace the current single dominant roof with a combination of a primary main gable roof over the central living area secondary smaller gable roof sections stepping forward and back across the facade a slightly lower roofline over the garage to make it read as a separate volume introduce variation in roof heights and directions to create depth and hierarchy similar to a barn style compound ensure the rooflines intersect cleanly and feel cohesive not overly complex maintain a modern barn aesthetic with a dark metal roof and matching dark vertical cladding enhance the front entry by subtly defining it with its own smaller gable or recessed section keep all proportions balanced and grounded no second storey no change to footprint