A festive greeting card design for Russia Day (June 12). The main theme combines coal mining industry with patriotic symbols. In the center, a neat pile of shiny black anthracite coal pieces forms the outline of a stylized Russian flag, with the white and blue stripes represented by real silk ribbons woven between the coal chunks, and the red stripe made of glowing crimson balloons tied to a mining shovel. Alternative composition: A dark coal mining conveyor belt covered with a layer of coal dust, turning into a row of floating Russian tricolor balloons (white, blue, red) against a clear blue sky. In the background, silhouettes of heavy mining trucks and a blast furnace with steam, but steam forms the shape of a large heart or the number "12" in Russian flag colors. Elegant golden calligraphy at the bottom: "Happy Russia Day!" and small text "From the team of [Coal Enterprise Name]". Style: photorealistic, slightly gritty industrial texture combined with joyful celebratory lighting, lens flare, depth of field, 8K, wide angle 16:16. --ar 16:16
