📱 fix: Envolver (wrap) botões de modos de prompt para não cortarem no celular

.env

@@ -7,3 +7,6 @@ MINIMAX_API_KEY=sk-cp-iWzSsdzjVy0tT5dnvv_sGrAlv3Nw7kkrZ8hPK0KjbNeSRQxIY1O6AhkQAq
 MINIMAX_API_BASE=https://api.minimax.io/v1
 GROQ_API_KEY=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
 GROQ_MODEL=llama-3.3-70b-versatile
+
+GOOGLE_AI_API_KEY=AIzaSyACelmI6-Bxc7TZ0sAzzgLd_F8VBexOjcQ
+GOOGLE_AI_MODEL=gemini-2.5-flash

public/style.css

@@ -2119,12 +2119,11 @@ code {
    ========================================================================== */
 .prompt-modes-bar {
   display: flex;
+  flex-wrap: wrap;
   gap: 8px;
   margin-bottom: 8px;
-  overflow-x: auto;
   padding: 4px 2px;
-  scrollbar-width: none; /* Firefox */
-  -ms-overflow-style: none; /* IE/Edge */
+  justify-content: center;
 }
 
 .prompt-modes-bar::-webkit-scrollbar {