This modern take on a courtyard house in Sagaponack pairs a classical layout with a clear, modern palette of materials. Step inside, and the horizon pulls you forward as the living room opens to the terrace, pool and view beyond through a glass wall that disappears into the floor. A broad roof ties the indoor and outdoor spaces together, while vertical fins soften the light and filter the views, giving dappled shade where it’s needed. They double as screens inside, carving out moments of intimacy within the open plan without interrupting the easy flow to the outdoors.