Improve 3D view to match reference drawings

Based on reference images in afbeeldingen/modellen/:
- dt9.png, dt10.png, door_type_4.jpg, samenstelling_beide.png

Changes for technical drawing aesthetic:

**Camera Improvements:**
- Position: [0, 1.2, 3.5] - More frontal, less perspective
- FOV: 35° (was 45°) - Less distortion
- Limited rotation: ±15° azimuth, near-horizontal polar
- Damping enabled for smooth movement
- Result: Flatter, more schematic view

**Profile Thickness (Match Reference Lines):**
- Stiles: 60mm (was 40mm) - Thicker vertical frames
- Rails: 40mm (was 20mm) - Thicker horizontal frames
- Depth: 60mm uniform - More prominent profiles
- Radius: 2mm (was 1mm) - Slightly more visible edges
- Result: Bold, visible frame lines like references

**Lighting (High Contrast):**
- Ambient: 0.8 (was 0.5) - Brighter overall
- Front key light: Straight on from [0,5,10]
- Intensity: 2.0 - Strong, even illumination
- Subtle side lights for minimal depth
- Result: Flat, technical drawing appearance

**Glass Material (White/Opaque):**
- Color: #f8f9fa (bright white)
- Transmission: 0.3 (was 1.0) - Much less transparent
- Opacity: 0.95 - Nearly opaque
- Result: White glass areas like reference drawings

**Visual Result:**
- Clear black frame lines on white glass
- Frontal view with minimal perspective
- Technical drawing aesthetic
- Matches dt9.png, door_type_4.jpg style
- User can see door design clearly

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

components/configurator/door-3d-enhanced.tsx

@@ -15,18 +15,17 @@ const SteelMaterial = ({ color }: { color: string }) => (
   />
 );
 
-// Glass material
+// Glass material - More opaque/white for technical drawing look
 const GlassMaterial = () => (
   <meshPhysicalMaterial
-    color="#eff6ff"
+    color="#f8f9fa"
     transparent
-    transmission={1}
-    roughness={0.05}
-    thickness={2.5}
+    transmission={0.3}
+    roughness={0.1}
+    thickness={1}
     ior={1.5}
-    envMapIntensity={1}
-    clearcoat={1}
-    clearcoatRoughness={0}
+    envMapIntensity={0.5}
+    opacity={0.95}
   />
 );
 
@@ -59,13 +58,13 @@ export function Door3DEnhanced() {
   const doorWidth = doorLeafWidth / 1000; // Convert mm to m
   const doorHeight = height / 1000; // Convert mm to m
 
-  // Profile dimensions (in meters)
-  const stileWidth = 0.04; // 40mm vertical profiles
-  const stileDepth = 0.04; // 40mm depth
-  const railHeight = 0.02; // 20mm horizontal profiles
-  const railDepth = 0.04; // 40mm depth
-  const glassThickness = 0.008; // 8mm glass
-  const profileRadius = 0.001; // 1mm rounded corners
+  // Profile dimensions (in meters) - Thicker for visibility
+  const stileWidth = 0.06; // 60mm vertical profiles (more visible)
+  const stileDepth = 0.06; // 60mm depth
+  const railHeight = 0.04; // 40mm horizontal profiles (more visible)
+  const railDepth = 0.06; // 60mm depth
+  const glassThickness = 0.01; // 10mm glass
+  const profileRadius = 0.002; // 2mm rounded corners
 
   // Calculate positions for grid dividers
   const getDividerPositions = () => {