Portrait-oriented casino-themed decorative border frame, clean vector style, crisp sharp lines, black red and gold color palette, symmetrical design, simple repeating pattern of playing card suits and dice, ornate but minimal gold filigree accents, large circular corner emblems, elegant Las Vegas casino aesthetic, transparent alpha center cutout, full border visible on all four sides, no cropping, no blurry symbols, no gradients in center, PNG with real transparency, production-ready texture, high resolution, centered composition, flat graphic style, Substance Painter friendly, sharp edges, consistent spacing, portrait aspect ratio 1:2