Generate an SVG as a birthday greeting card illustration. Celebratory festive style. Background fill #1A1A2E. Draw a birthday cake silhouette at lower-center with gold (#C9A84C) fine decorations. Surround with gold firework burst patterns (radial lines from 3 points across upper canvas). Scatter sparkle dot clusters in #E8D5A3. Small star shapes scattered. Multiple overlapping radial elements. No text, no labels, no emoji. Output raw SVG code only starting with <svg.

The image shows a birthday cake with candles and fireworks in the background, creating a festive atmosphere. The cake is decorated with colorful frosting and sprinkles, and the candles are lit, giving the image a warm and inviting feel. The background is a deep blue color, adding to the celebratory atmosphere.