Cinematic ultra-high-definition render of a luxury outdoor bioethanol fireplace with electric blue and cobalt flame jets, set on an infinity terrace overlooking a calm tropical lagoon at dusk. The fireplace is a sleek, floor-recessed rectangular fire pit with polished black granite surround and brushed stainless steel insets — architectural, minimalist, $100M mansion aesthetic. Blue flames burn low, even, and hypnotic in a perfectly symmetrical pattern. The horizon glows in deep amber and violet as the last light fades over still turquoise water and overwater bungalows in the far distance. Reflections of the blue fire dance on the granite surface. Atmosphere is still, windless, serene. Shot from a slight elevated angle, wide composition. Photorealistic, 8K, ray-traced reflections, depth of field, cinematic color grading. Style / Technical Tags to add in Leonardo: photorealistic, architectural visualization, luxury interior design, cinematic lighting, dusk golden hour, blue bioluminescent flame, seamless loop, ambient video, still composition, no camera movement, symmetrical framing, 16:9 widescreen, ultra sharp, high dynamic range Negative Prompt: people, text, logo, watermark, cartoon, animated style, orange flames, red flames, indoor setting, daytime, harsh sunlight, motion blur, camera shake, asymmetrical framing, low quality, noise, grain