Pinterest Logo in Water Sphere

Generate a hyper-realistic image of a transparent water sphere floating in mid-air, containing a fully volumetric Pinterest logo. The sphere is made of clear flowing water with realistic refraction, light bending, and internal caustics. The water surface is smooth with tiny air bubbles trapped inside and small water droplets on the outer surface. The Pinterest logo inside is red with a white symbol, slightly submerged in water, covered with tiny air bubbles and micro water droplets. The lighting is soft but clear with natural light diffusion through water, and a subtle shadow is cast beneath the sphere. The background is a neutral gray gradient with no texture or objects. The image should be high-contrast, HDR, with perfect clarity and depth, and centered composition. No people, environment, or studio equipment reflections should be visible. Only abstract light reflections are allowed. The overall effect should be ultra-realistic and premium.