🎨 fix: Elementos da cena como stickers sem fundo branco (mix-blend-mode: multiply + prompts otimizados)

server.js

@@ -1605,7 +1605,7 @@ Retorne a resposta estritamente no formato JSON abaixo, sem blocos de código ma
       jsonResponse = {
         backgroundPrompt: `empty scene backdrop for ${tema}, cartoon vector style, no people, no animals, no text`,
         elements: [
-          { name: "Elemento Principal", prompt: `${tema}, cartoon vector style, isolated on a solid white background, sticker style, no text` }
+          { name: "Elemento Principal", prompt: `${tema}, cartoon sticker clipart style, completely isolated on a pure white background, no shadows, no background elements, no text` }
         ]
       };
     }
@@ -1626,7 +1626,7 @@ Retorne a resposta estritamente no formato JSON abaixo, sem blocos de código ma
           },
           body: JSON.stringify({
             model: 'image-01',
-            prompt: `${promptText}. Complete figures shown from top to bottom without cutoffs, kid-friendly illustration style, 3D Pixar, soft pastel colors, no text, no words, no letters, no writing, no labels.`,
+            prompt: `${promptText}. Complete full-body figure visible from head to toe without any cutoffs. Pure solid white background #FFFFFF, no shadows, no gradients, no gray areas, no drop shadows, no environment, kid-friendly 3D Pixar illustration style, soft pastel colors on the character only, no text, no words, no letters, no writing, no labels.`,
             n: 1
           })
         });