Tranquil Blue Sky with Puffy Cloudscape

An ultra-wide, cinematic panorama of a tranquil, clear blue sky dotted with fluffy cumulus clouds. Rich azure tones sweep from deep blue at the top to pale cerulean near the horizon. Soft sunlight along the cloud edges casts gentle highlights and subtle shadows, creating a serene atmosphere. A distant horizon with barely visible hills or treetops anchors the scene while keeping the focus on the vast sky. Clouds are airy, well-spaced, and richly detailed to convey depth. Render in photorealistic 8k detail, 16:9 aspect ratio, HDR, with a subtle lens flare from a sun just off-frame to the upper left. Pure nature backdrop with no people or structures.