Move UI higher and enlarge prompt field

- Reduce container padding from 48px to 16px
- Reduce header margins and font size
- Increase textarea height from 500px to 620px
- Increase lines from 20 to 28
- Reduce font size from 17px to 15px for more text visibility

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app.py

@@ -248,7 +248,7 @@ css = """
 .gradio-container {
     max-width: 85vw !important;
     margin: 0 auto !important;
-    padding: 48px 20px !important;
+    padding: 16px 20px !important;
     font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Roboto', sans-serif !important;
 }
 
@@ -261,16 +261,16 @@ css = """
 /* Header */
 .header-container {
     text-align: left;
-    margin-bottom: 24px;
+    margin-bottom: 12px;
 }
 
 .main-title {
-    font-size: 32px !important;
+    font-size: 28px !important;
     font-weight: 600 !important;
     letter-spacing: -0.02em !important;
     line-height: 1.07 !important;
     color: #f5f5f7 !important;
-    margin: 0 0 16px 0 !important;
+    margin: 0 0 8px 0 !important;
 }
 
 /* Input Section */
@@ -289,7 +289,7 @@ css = """
 
 /* Textbox */
 textarea {
-    font-size: 17px !important;
+    font-size: 15px !important;
     line-height: 1.47 !important;
     border-radius: 12px !important;
     border: 1px solid #424245 !important;
@@ -297,12 +297,12 @@ textarea {
     background: #2d2d2f !important;
     color: #f5f5f7 !important;
     font-family: -apple-system, BlinkMacSystemFont, 'Inter', sans-serif !important;
-    min-height: 500px !important;
-    max-height: 700px !important;
-    height: 500px !important;
+    min-height: 620px !important;
+    max-height: 800px !important;
+    height: 620px !important;
     resize: vertical !important;
     overflow-y: auto !important;
-    margin-bottom: 16px !important;
+    margin-bottom: 12px !important;
 }
 
 textarea:focus {
@@ -588,8 +588,8 @@ with gr.Blocks(
             prompt = gr.Textbox(
                 placeholder="Describe the image you want to create...",
                 value="Ultra-detailed isometric 3D diorama of a compact AI research lab inside a cutaway cube room. One person seated at a large desk placed directly against the left wall, equipped with exactly three displays, working at a keyboard, wearing large white over-ear headphones, with the mouse positioned next to the person's right hand. A large whiteboard mounted on the left wall directly in front of the desk, filled with technical diagrams and flowcharts. The room is bright, clean, and uncluttered, with a minimalist gray floor and walls.\n\nAlong the right side of the room, arranged from left to right: two tall server racks standing side by side with no gap between them, fully filled from floor to top with dense AI server units and glowing green LED indicator lights; next to the racks, a small snack bar with neatly arranged packaged snacks on shelves and a counter; and at the far right, a clear glass-front refrigerator filled with energy drinks. These are the only server racks in the room. Clean modern lighting, realistic soft shadows, no floating screens or holograms, high realism, sharp focus, professional isometric 3D style.",
-                lines=20,
-                max_lines=25,
+                lines=28,
+                max_lines=35,
                 max_length=2000,
                 label="Prompt",
                 show_label=True,