diff --git a/index.html b/index.html
index 2dd88ca..8945ce0 100644
--- a/index.html
+++ b/index.html
@@ -26,8 +26,11 @@
       };
     </script>
 
-    <!-- Lucide (UMD, reliable global window.lucide) -->
-    <script src="https://cdn.jsdelivr.net/npm/lucide@0.559.0/dist/umd/lucide.min.js"></script>
+    <!-- Lucide -->
+    <!-- Development version -->
+    <!-- <script src="https://unpkg.com/lucide@latest/dist/umd/lucide.js"></script> -->
+    <!-- Production version -->
+    <script src="https://unpkg.com/lucide@latest"></script>
 
     <!-- gif.js + worker -->
     <script src="https://cdn.jsdelivr.net/npm/gif.js.optimized/dist/gif.js"></script>
@@ -47,6 +50,7 @@
               @click="settingsOpen = true"
               class="inline-flex h-10 w-10 items-center justify-center rounded-xl border border-ui-border hover:bg-gray-100"
               title="Account settings"
+              aria-label="Open account settings"
             >
               <i data-lucide="panel-left" class="h-5 w-5 text-ui-accent"></i>
             </button>
@@ -94,13 +98,23 @@
           <div class="grid grid-cols-2 gap-3">
             <div class="space-y-1">
               <label class="text-sm text-ui-sub">Image size</label>
-              <select x-model="form.imageSize" class="w-full rounded-xl border border-ui-border bg-white px-3 py-2">
-                <option value="1K">1K</option>
-                <template x-if="form.model === 'google/gemini-3.1-flash-image-preview'">
+
+              <!-- Gemini: 1K + 0.5K -->
+              <template x-if="isGeminiModel(form.model)">
+                <select x-model="form.imageSize" class="w-full rounded-xl border border-ui-border bg-white px-3 py-2">
+                  <option value="1K">1K</option>
                   <option value="0.5K">0.5K</option>
-                </template>
-              </select>
+                </select>
+              </template>
+
+              <!-- Non-Gemini: 1K only -->
+              <template x-if="!isGeminiModel(form.model)">
+                <select x-model="form.imageSize" class="w-full rounded-xl border border-ui-border bg-white px-3 py-2">
+                  <option value="1K">1K</option>
+                </select>
+              </template>
             </div>
+
             <div class="space-y-1">
               <label class="text-sm text-ui-sub">Aspect ratio</label>
               <select x-model="form.aspectRatio" class="w-full rounded-xl border border-ui-border bg-white px-3 py-2">
@@ -163,7 +177,7 @@
         <div @click.outside="settingsOpen=false" class="w-full max-w-md rounded-2xl border border-ui-border bg-white p-4 space-y-3">
           <div class="flex items-center justify-between">
             <h3 class="font-semibold">Account Settings</h3>
-            <button @click="settingsOpen=false" class="rounded-lg p-2 hover:bg-gray-100">
+            <button @click="settingsOpen=false" class="rounded-lg p-2 hover:bg-gray-100" aria-label="Close modal">
               <i data-lucide="x" class="h-4 w-4"></i>
             </button>
           </div>