Design a digital painting that portrays a serene morning in a city shrouded in fog. The composition should feature a quiet street lined with trees, their branches heavy with mist. Use soft brush strokes to create a gentle, impressionistic effect, blending pastel colors of pale blues, soft greens, and muted grays to evoke a tranquil atmosphere. The foreground should include details such as a cobblestone path leading into the distance, partially obscured by the fog, while the background reveals the faint outlines of buildings emerging from the mist. The soft, diffused light should create a sense of calm, inviting viewers to experience the peacefulness of a foggy urban morning.