diff --git a/index.html b/index.html
index 0c2e32b..9db2716 100644
--- a/index.html
+++ b/index.html
@@ -15,17 +15,6 @@
                             : window.matchMedia('(prefers-color-scheme: dark)').matches;
       if (!prefersDark) document.documentElement.setAttribute('data-theme', 'light');
     })();
-    // Apply saved language before first paint to avoid flash
-    (function() {
-      const l = localStorage.getItem('stlt-lang');
-      if (l === 'de' || l === 'en') {
-        document.documentElement.setAttribute('data-lang', l);
-        document.documentElement.setAttribute('lang', l);
-      } else if (navigator.language && navigator.language.toLowerCase().startsWith('de')) {
-        document.documentElement.setAttribute('data-lang', 'de');
-        document.documentElement.setAttribute('lang', 'de');
-      }
-    })();
   </script>
   <script type="importmap">
   {
@@ -45,8 +34,6 @@
     </div>
     <div class="header-actions">
       <div class="lang-seg">
-        <button class="lang-btn active" data-lang-code="en">EN</button>
-        <button class="lang-btn" data-lang-code="de">DE</button>
       </div>
       <button id="theme-toggle" class="theme-toggle"
         data-i18n-title="theme.toggleTitle"
diff --git a/js/i18n.js b/js/i18n.js
index 00e9f83..c5880bd 100644
--- a/js/i18n.js
+++ b/js/i18n.js
@@ -3,145 +3,146 @@
 
 export const TRANSLATIONS = {
   en: {
+    'lang.name': 'English',
     // Theme toggle
-    'theme.dark':              'Dark Theme',
-    'theme.light':             'Light Theme',
-    'theme.toggleTitle':       'Toggle light / dark mode',
-    'theme.toggleAriaLabel':   'Toggle light/dark mode',
+    'theme.dark': 'Dark Theme',
+    'theme.light': 'Light Theme',
+    'theme.toggleTitle': 'Toggle light / dark mode',
+    'theme.toggleAriaLabel': 'Toggle light/dark mode',
 
     // Drop zone
     'dropHint.text': 'Drop an <strong>.stl</strong>, <strong>.obj</strong> or <strong>.3mf</strong> file here<br/>or <label for="stl-file-input" class="link-label">click to browse</label>',
 
     // Viewport footer
-    'ui.wireframe':      'Wireframe',
-    'ui.controlsHint':   'Left drag: orbit \u00a0·\u00a0 Right drag: pan \u00a0·\u00a0 Scroll: zoom',
-    'ui.meshInfo':       '{n} triangles · {mb} MB · {sx} × {sy} × {sz} mm',
+    'ui.wireframe': 'Wireframe',
+    'ui.controlsHint': 'Left drag: orbit \u00a0·\u00a0 Right drag: pan \u00a0·\u00a0 Scroll: zoom',
+    'ui.meshInfo': '{n} triangles · {mb} MB · {sx} × {sy} × {sz} mm',
 
     // Load model button
-    'ui.loadStl':        'Load Model\u2026',
+    'ui.loadStl': 'Load Model\u2026',
 
     // Displacement map section
     'sections.displacementMap': 'Displacement Map',
-    'ui.uploadCustomMap':  'Upload custom map',
-    'ui.noMapSelected':    'No map selected',
+    'ui.uploadCustomMap': 'Upload custom map',
+    'ui.noMapSelected': 'No map selected',
 
     // Projection section
-    'sections.projection':   'Projection',
-    'labels.mode':           'Mode',
-    'projection.triplanar':  'Triplanar',
-    'projection.cubic':      'Cubic (Box)',
-    'projection.cylindrical':'Cylindrical',
-    'projection.spherical':  'Spherical',
-    'projection.planarXY':   'Planar XY',
-    'projection.planarXZ':   'Planar XZ',
-    'projection.planarYZ':   'Planar YZ',
+    'sections.projection': 'Projection',
+    'labels.mode': 'Mode',
+    'projection.triplanar': 'Triplanar',
+    'projection.cubic': 'Cubic (Box)',
+    'projection.cylindrical': 'Cylindrical',
+    'projection.spherical': 'Spherical',
+    'projection.planarXY': 'Planar XY',
+    'projection.planarXZ': 'Planar XZ',
+    'projection.planarYZ': 'Planar YZ',
 
     // Transform section
-    'sections.transform':    'Transform',
-    'labels.scaleU':         'Scale U',
-    'labels.scaleV':         'Scale V',
-    'labels.offsetU':        'Offset U',
-    'labels.offsetV':        'Offset V',
-    'labels.rotation':       'Rotation',
-    'tooltips.proportionalScaling':      'Proportional scaling (U = V)',
-    'tooltips.proportionalScalingAria':  'Proportional scaling (U = V)',
+    'sections.transform': 'Transform',
+    'labels.scaleU': 'Scale U',
+    'labels.scaleV': 'Scale V',
+    'labels.offsetU': 'Offset U',
+    'labels.offsetV': 'Offset V',
+    'labels.rotation': 'Rotation',
+    'tooltips.proportionalScaling': 'Proportional scaling (U = V)',
+    'tooltips.proportionalScalingAria': 'Proportional scaling (U = V)',
 
     // Displacement section
     'sections.displacement': 'Texture Depth',
-    'labels.amplitude':      'Amplitude',
+    'labels.amplitude': 'Amplitude',
 
     // Seam blend
-    'labels.seamBlend':              'Seam Blend \u24d8',
-    'tooltips.seamBlend':            'Softens the hard seam where projection faces meet. Effective for Cubic and Cylindrical modes.',
-    'labels.transitionSmoothing':    'Transition Smoothing \u24d8',
-    'tooltips.transitionSmoothing':  'Width of the blending zone near seam edges. Lower values keep transitions tight to the seam; higher values blend a wider band.',
-    'labels.textureSmoothing':       'Texture Smoothing \u24d8',
-    'tooltips.textureSmoothing':     'Applies a Gaussian blur to the displacement map. Higher values produce softer, more gradual surface detail. 0 = off.',
-    'labels.capAngle':               'Cap Angle \u24d8',
-    'tooltips.capAngle':             'Angle (in degrees) from vertical at which the top/bottom cap projection kicks in. Smaller values limit cap projection to nearly flat faces.',
+    'labels.seamBlend': 'Seam Blend \u24d8',
+    'tooltips.seamBlend': 'Softens the hard seam where projection faces meet. Effective for Cubic and Cylindrical modes.',
+    'labels.transitionSmoothing': 'Transition Smoothing \u24d8',
+    'tooltips.transitionSmoothing': 'Width of the blending zone near seam edges. Lower values keep transitions tight to the seam; higher values blend a wider band.',
+    'labels.textureSmoothing': 'Texture Smoothing \u24d8',
+    'tooltips.textureSmoothing': 'Applies a Gaussian blur to the displacement map. Higher values produce softer, more gradual surface detail. 0 = off.',
+    'labels.capAngle': 'Cap Angle \u24d8',
+    'tooltips.capAngle': 'Angle (in degrees) from vertical at which the top/bottom cap projection kicks in. Smaller values limit cap projection to nearly flat faces.',
 
     // Mask angles section
-    'sections.maskAngles':           'Mask Angles \u24d8',
-    'tooltips.maskAngles':           '0° = no masking. Surfaces within this angle of horizontal will not be textured.',
-    'labels.bottomFaces':            'Bottom faces',
-    'tooltips.bottomFaces':          'Suppress texture on downward-facing surfaces within this angle of horizontal',
-    'labels.topFaces':               'Top faces',
-    'tooltips.topFaces':             'Suppress texture on upward-facing surfaces within this angle of horizontal',
+    'sections.maskAngles': 'Mask Angles \u24d8',
+    'tooltips.maskAngles': '0° = no masking. Surfaces within this angle of horizontal will not be textured.',
+    'labels.bottomFaces': 'Bottom faces',
+    'tooltips.bottomFaces': 'Suppress texture on downward-facing surfaces within this angle of horizontal',
+    'labels.topFaces': 'Top faces',
+    'tooltips.topFaces': 'Suppress texture on upward-facing surfaces within this angle of horizontal',
 
     // Surface masking section
-    'sections.surfaceMasking':       'Surface Masking \u24d8',
-    'sections.surfaceSelection':     'Surface Selection',
-    'tooltips.surfaceMasking':       'Mask surfaces to control which areas receive displacement.',
-    'tooltips.surfaceSelection':     'Selected surfaces appear green and will be the only ones to receive displacement during export.',
-    'excl.modeExclude':              'Exclude',
-    'excl.modeExcludeTitle':         'Exclude mode: painted surfaces will not receive texture displacement',
-    'excl.modeIncludeOnly':          'Include Only',
-    'excl.modeIncludeOnlyTitle':     'Include Only mode: only painted surfaces will receive texture displacement',
-    'excl.toolBrush':                'Brush',
-    'excl.toolBrushTitle':           'Brush: paint triangles to exclude',
-    'excl.toolFill':                 'Fill',
-    'excl.toolFillTitle':            'Bucket fill: flood-fill surface up to a threshold angle',
-    'excl.shiftHint':                'Hold Shift to erase',
-    'labels.type':                   'Type',
-    'brushType.single':              'Single',
-    'brushType.circle':              'Circle',
-    'labels.size':                   'Size',
-    'labels.maxAngle':               'Max angle',
-    'tooltips.maxAngle':             'Maximum dihedral angle between adjacent triangles for the fill to cross',
-    'ui.clearAll':                   'Clear All',
-    'excl.initExcluded':             '0 faces masked',
-    'excl.faceExcluded':             '{n} face masked',
-    'excl.facesExcluded':            '{n} faces masked',
-    'excl.faceSelected':             '{n} face selected',
-    'excl.facesSelected':            '{n} faces selected',
-    'excl.hintExclude':              'Masked surfaces appear orange and will not receive displacement during export.',
-    'excl.hintInclude':              'Selected surfaces appear green and will be the only ones to receive displacement during export.',
+    'sections.surfaceMasking': 'Surface Masking \u24d8',
+    'sections.surfaceSelection': 'Surface Selection',
+    'tooltips.surfaceMasking': 'Mask surfaces to control which areas receive displacement.',
+    'tooltips.surfaceSelection': 'Selected surfaces appear green and will be the only ones to receive displacement during export.',
+    'excl.modeExclude': 'Exclude',
+    'excl.modeExcludeTitle': 'Exclude mode: painted surfaces will not receive texture displacement',
+    'excl.modeIncludeOnly': 'Include Only',
+    'excl.modeIncludeOnlyTitle': 'Include Only mode: only painted surfaces will receive texture displacement',
+    'excl.toolBrush': 'Brush',
+    'excl.toolBrushTitle': 'Brush: paint triangles to exclude',
+    'excl.toolFill': 'Fill',
+    'excl.toolFillTitle': 'Bucket fill: flood-fill surface up to a threshold angle',
+    'excl.shiftHint': 'Hold Shift to erase',
+    'labels.type': 'Type',
+    'brushType.single': 'Single',
+    'brushType.circle': 'Circle',
+    'labels.size': 'Size',
+    'labels.maxAngle': 'Max angle',
+    'tooltips.maxAngle': 'Maximum dihedral angle between adjacent triangles for the fill to cross',
+    'ui.clearAll': 'Clear All',
+    'excl.initExcluded': '0 faces masked',
+    'excl.faceExcluded': '{n} face masked',
+    'excl.facesExcluded': '{n} faces masked',
+    'excl.faceSelected': '{n} face selected',
+    'excl.facesSelected': '{n} faces selected',
+    'excl.hintExclude': 'Masked surfaces appear orange and will not receive displacement during export.',
+    'excl.hintInclude': 'Selected surfaces appear green and will be the only ones to receive displacement during export.',
 
     // Precision masking
-    'precision.label':               'Precision (Beta) \u24d8',
-    'precision.labelTitle':          'Subdivide mesh in the background so the brush selects at finer granularity',
-    'precision.outdated':            '\u26a0 Outdated',
-    'precision.refreshTitle':        'Re-subdivide mesh to match current brush size',
-    'precision.triCount':            '{n} \u25b3',
-    'precision.refining':            'Refining\u2026',
-    'precision.warningBody':         'Estimated ~{n} triangles. This may slow down your browser. Continue?',
+    'precision.label': 'Precision (Beta) \u24d8',
+    'precision.labelTitle': 'Subdivide mesh in the background so the brush selects at finer granularity',
+    'precision.outdated': '\u26a0 Outdated',
+    'precision.refreshTitle': 'Re-subdivide mesh to match current brush size',
+    'precision.triCount': '{n} \u25b3',
+    'precision.refining': 'Refining\u2026',
+    'precision.warningBody': 'Estimated ~{n} triangles. This may slow down your browser. Continue?',
 
     // Symmetric displacement
-    'labels.symmetricDisplacement':  'Symmetric displacement \u24d8',
-    'tooltips.symmetricDisplacement':'When on, 50% grey = no displacement; white pushes out, black pushes in. Keeps part volume roughly constant.',
+    'labels.symmetricDisplacement': 'Symmetric displacement \u24d8',
+    'tooltips.symmetricDisplacement': 'When on, 50% grey = no displacement; white pushes out, black pushes in. Keeps part volume roughly constant.',
 
     // Displacement preview
-    'labels.displacementPreview':    '3D Preview \u24d8',
-    'tooltips.displacementPreview':  'Subdivides the mesh and displaces vertices in real-time so you can judge the actual depth. GPU-intensive on complex models.',
+    'labels.displacementPreview': '3D Preview \u24d8',
+    'tooltips.displacementPreview': 'Subdivides the mesh and displaces vertices in real-time so you can judge the actual depth. GPU-intensive on complex models.',
 
     // Place on face
-    'ui.placeOnFace':                'Place on Face',
-    'ui.placeOnFaceTitle':           'Click a face to orient it downward onto the print bed',
-    'progress.subdividingPreview':   'Preparing preview\u2026',
+    'ui.placeOnFace': 'Place on Face',
+    'ui.placeOnFaceTitle': 'Click a face to orient it downward onto the print bed',
+    'progress.subdividingPreview': 'Preparing preview\u2026',
 
     // Amplitude overlap warning
-    'warnings.amplitudeOverlap':     '\u26a0 Amplitude exceeds 10% of the smallest model dimension \u2014 geometry overlaps may occur in the exported STL.',
+    'warnings.amplitudeOverlap': '\u26a0 Amplitude exceeds 10% of the smallest model dimension \u2014 geometry overlaps may occur in the exported STL.',
 
     // Export section
-    'sections.export':               'Export \u24d8',
-    'tooltips.export':               'Smaller edge length = finer displacement detail. Output is then decimated to the triangle limit.',
-    'labels.resolution':             'Resolution',
-    'tooltips.resolution':           'Edges longer than this value will be split during export',
-    'labels.outputTriangles':        'Output Triangles',
-    'tooltips.outputTriangles':      'Mesh is fully subdivided first, then decimated down to this count',
-    'warnings.safetyCapHit':         '\u26a0 20M-triangle safety cap hit during subdivision \u2014 result may still be coarser than requested edge length.',
-    'ui.exportStl':                  'Export STL',
+    'sections.export': 'Export \u24d8',
+    'tooltips.export': 'Smaller edge length = finer displacement detail. Output is then decimated to the triangle limit.',
+    'labels.resolution': 'Resolution',
+    'tooltips.resolution': 'Edges longer than this value will be split during export',
+    'labels.outputTriangles': 'Output Triangles',
+    'tooltips.outputTriangles': 'Mesh is fully subdivided first, then decimated down to this count',
+    'warnings.safetyCapHit': '\u26a0 20M-triangle safety cap hit during subdivision \u2014 result may still be coarser than requested edge length.',
+    'ui.exportStl': 'Export STL',
 
     // Export progress stages
-    'progress.subdividing':          'Subdividing mesh\u2026',
-    'progress.refining':             'Refining: {cur} triangles, longest edge {edge}',
+    'progress.subdividing': 'Subdividing mesh\u2026',
+    'progress.refining': 'Refining: {cur} triangles, longest edge {edge}',
     'progress.applyingDisplacement': 'Applying displacement to {n} triangles\u2026',
-    'progress.displacingVertices':   'Displacing vertices\u2026',
-    'progress.decimatingTo':         'Simplifying {from} \u2192 {to} triangles\u2026',
-    'progress.decimating':           'Simplifying: {cur} \u2192 {to} triangles',
-    'progress.writingStl':           'Writing STL\u2026',
-    'progress.done':                 'Done!',
-    'progress.processing':           'Processing\u2026',
+    'progress.displacingVertices': 'Displacing vertices\u2026',
+    'progress.decimatingTo': 'Simplifying {from} \u2192 {to} triangles\u2026',
+    'progress.decimating': 'Simplifying: {cur} \u2192 {to} triangles',
+    'progress.writingStl': 'Writing STL\u2026',
+    'progress.done': 'Done!',
+    'progress.processing': 'Processing\u2026',
 
     // License popup
     'license.btn':    'License & Terms',
@@ -156,177 +157,178 @@ export const TRANSLATIONS = {
     'license.item8':  'Source code available on <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">GitHub</a>.',
 
     // Imprint & Privacy
-    'imprint.btn':            'Imprint & Privacy',
-    'imprint.title':          'Imprint & Privacy Policy',
+    'imprint.btn': 'Imprint & Privacy',
+    'imprint.title': 'Imprint & Privacy Policy',
     'imprint.sectionImprint': 'Imprint (Impressum)',
-    'imprint.info':           'CNC Kitchen<br>Stefan Hermann<br>Bahnhofstr. 2<br>88145 Hergatz<br>Germany',
-    'imprint.contact':        'Email: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Phone: +49 175 2011824<br><em>The phone number is for legal/business inquiries only \u2014 not for support.</em>',
-    'imprint.odr':             'EU Online Dispute Resolution platform: <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
+    'imprint.info': 'CNC Kitchen<br>Stefan Hermann<br>Bahnhofstr. 2<br>88145 Hergatz<br>Germany',
+    'imprint.contact': 'Email: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Phone: +49 175 2011824<br><em>The phone number is for legal/business inquiries only \u2014 not for support.</em>',
+    'imprint.odr': 'EU Online Dispute Resolution platform: <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
     'imprint.sectionPrivacy': 'Privacy Policy (Datenschutzerkl\u00e4rung)',
-    'imprint.privacyIntro':   '<strong>Responsible party</strong> (Verantwortlicher gem. Art. 4 Abs. 7 DSGVO): Stefan Hermann, Bahnhofstr. 2, 88145 Hergatz, Germany.',
+    'imprint.privacyIntro': '<strong>Responsible party</strong> (Verantwortlicher gem. Art. 4 Abs. 7 DSGVO): Stefan Hermann, Bahnhofstr. 2, 88145 Hergatz, Germany.',
     'imprint.privacyHosting': 'This website is hosted on <strong>GitHub Pages</strong> (GitHub Inc. / Microsoft Corp., 88 Colin P Kelly Jr St, San Francisco, CA 94107, USA). When you visit this site, GitHub may process your IP address in server logs. Legal basis: Art. 6(1)(f) DSGVO (legitimate interest in providing the website). See <a href="https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement" target="_blank" rel="noopener">GitHub\u2019s Privacy Statement</a>.',
-    'imprint.privacyLocal':   'This tool stores user preferences (language, theme) in your browser\u2019s <strong>localStorage</strong>. This data never leaves your device and is not transmitted to any server.',
-    'imprint.privacyNoCookies':'This website does <strong>not</strong> use cookies, analytics, or any tracking technologies.',
-    'imprint.privacyExternal':'This site contains links to external websites (e.g., CNCKitchen.STORE, PayPal). These sites have their own privacy policies, over which we have no control.',
-    'imprint.privacyRights':  'Under the GDPR you have the right to <strong>access, rectification, erasure, restriction of processing, data portability</strong>, and the right to <strong>lodge a complaint</strong> with a supervisory authority.',
+    'imprint.privacyLocal': 'This tool stores user preferences (language, theme) in your browser\u2019s <strong>localStorage</strong>. This data never leaves your device and is not transmitted to any server.',
+    'imprint.privacyNoCookies': 'This website does <strong>not</strong> use cookies, analytics, or any tracking technologies.',
+    'imprint.privacyExternal': 'This site contains links to external websites (e.g., CNCKitchen.STORE, PayPal). These sites have their own privacy policies, over which we have no control.',
+    'imprint.privacyRights': 'Under the GDPR you have the right to <strong>access, rectification, erasure, restriction of processing, data portability</strong>, and the right to <strong>lodge a complaint</strong> with a supervisory authority.',
 
     // Sponsor modal
-    'sponsor.title':           'Thanks for using BumpMesh by CNC Kitchen!',
-    'sponsor.body':            'This tool is provided <strong>completely free</strong> by CNC Kitchen.<br>While your STL is being processed, why not check out the store that helps us keep making cool stuff for you?',
-    'sponsor.visitStore':      '\uD83D\uDED2 Visit CNCKitchen.STORE',
-    'sponsor.donate':          '\uD83D\uDC99 Donate on PayPal',
-    'sponsor.dontShow':        "Don\u2019t show this again",
-    'sponsor.closeAndContinue':'Close &amp; Continue',
+    'sponsor.title': 'Thanks for using BumpMesh by CNC Kitchen!',
+    'sponsor.body': 'This tool is provided <strong>completely free</strong> by CNC Kitchen.<br>While your STL is being processed, why not check out the store that helps us keep making cool stuff for you?',
+    'sponsor.visitStore': '\uD83D\uDED2 Visit CNCKitchen.STORE',
+    'sponsor.donate': '\uD83D\uDC99 Donate on PayPal',
+    'sponsor.dontShow': "Don\u2019t show this again",
+    'sponsor.closeAndContinue': 'Close &amp; Continue',
 
     // Store CTA
-    'cta.store':         'Support this tool? Shop at <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> or donate on <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener noreferrer">PayPal</a>',
-    'cta.storeDismiss':  'Dismiss',
+    'cta.store': 'Support this tool? Shop at <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> or donate on <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener noreferrer">PayPal</a>',
+    'cta.storeDismiss': 'Dismiss',
 
     // Alerts
-    'alerts.loadFailed':   'Could not load model: {msg}',
+    'alerts.loadFailed': 'Could not load model: {msg}',
     'alerts.exportFailed': 'Export failed: {msg}',
   },
 
   de: {
+    'lang.name': 'Deutsch',
     // Theme toggle
-    'theme.dark':              'Dunkles Design',
-    'theme.light':             'Helles Design',
-    'theme.toggleTitle':       'Hell/Dunkel-Modus wechseln',
-    'theme.toggleAriaLabel':   'Hell/Dunkel-Modus wechseln',
+    'theme.dark': 'Dunkles Design',
+    'theme.light': 'Helles Design',
+    'theme.toggleTitle': 'Hell/Dunkel-Modus wechseln',
+    'theme.toggleAriaLabel': 'Hell/Dunkel-Modus wechseln',
 
     // Drop zone
     'dropHint.text': '<strong>.stl</strong>-, <strong>.obj</strong>- oder <strong>.3mf</strong>-Datei hier ablegen<br/>oder <label for="stl-file-input" class="link-label">zum Durchsuchen klicken</label>',
 
     // Viewport footer
-    'ui.wireframe':      'Drahtgitter',
-    'ui.controlsHint':   'Linke Maustaste: Drehen \u00a0·\u00a0 Rechte Maustaste: Verschieben \u00a0·\u00a0 Mausrad: Zoomen',
-    'ui.meshInfo':       '{n} Dreiecke · {mb} MB · {sx} × {sy} × {sz} mm',
+    'ui.wireframe': 'Drahtgitter',
+    'ui.controlsHint': 'Linke Maustaste: Drehen \u00a0·\u00a0 Rechte Maustaste: Verschieben \u00a0·\u00a0 Mausrad: Zoomen',
+    'ui.meshInfo': '{n} Dreiecke · {mb} MB · {sx} × {sy} × {sz} mm',
 
     // Load model button
-    'ui.loadStl':        'Modell laden\u2026',
+    'ui.loadStl': 'Modell laden\u2026',
 
     // Displacement map section
     'sections.displacementMap': 'Textur',
-    'ui.uploadCustomMap':  'Eigene Textur hochladen',
-    'ui.noMapSelected':    'Keine Textur ausgew\u00e4hlt',
+    'ui.uploadCustomMap': 'Eigene Textur hochladen',
+    'ui.noMapSelected': 'Keine Textur ausgew\u00e4hlt',
 
     // Projection section
-    'sections.projection':   'Projektion',
-    'labels.mode':           'Modus',
-    'projection.triplanar':  'Triplanar',
-    'projection.cubic':      'Kubisch (Box)',
-    'projection.cylindrical':'Zylindrisch',
-    'projection.spherical':  'Sph\u00e4risch',
-    'projection.planarXY':   'Planar XY',
-    'projection.planarXZ':   'Planar XZ',
-    'projection.planarYZ':   'Planar YZ',
+    'sections.projection': 'Projektion',
+    'labels.mode': 'Modus',
+    'projection.triplanar': 'Triplanar',
+    'projection.cubic': 'Kubisch (Box)',
+    'projection.cylindrical': 'Zylindrisch',
+    'projection.spherical': 'Sph\u00e4risch',
+    'projection.planarXY': 'Planar XY',
+    'projection.planarXZ': 'Planar XZ',
+    'projection.planarYZ': 'Planar YZ',
 
     // Transform section
-    'sections.transform':    'Transformation',
-    'labels.scaleU':         'Skalierung U',
-    'labels.scaleV':         'Skalierung V',
-    'labels.offsetU':        'Versatz U',
-    'labels.offsetV':        'Versatz V',
-    'labels.rotation':       'Rotation',
-    'tooltips.proportionalScaling':      'Proportionale Skalierung (U = V)',
-    'tooltips.proportionalScalingAria':  'Proportionale Skalierung (U = V)',
+    'sections.transform': 'Transformation',
+    'labels.scaleU': 'Skalierung U',
+    'labels.scaleV': 'Skalierung V',
+    'labels.offsetU': 'Versatz U',
+    'labels.offsetV': 'Versatz V',
+    'labels.rotation': 'Rotation',
+    'tooltips.proportionalScaling': 'Proportionale Skalierung (U = V)',
+    'tooltips.proportionalScalingAria': 'Proportionale Skalierung (U = V)',
 
     // Displacement section
     'sections.displacement': 'Texturtiefe',
-    'labels.amplitude':      'Amplitude',
+    'labels.amplitude': 'Amplitude',
 
     // Seam blend
-    'labels.seamBlend':              'Nahtglättung \u24d8',
-    'tooltips.seamBlend':            'Glättet den scharfen Übergang zwischen Projektionsflächen. Wirksam für Kubische und Zylindrische Modi.',
-    'labels.transitionSmoothing':    'Übergangsglättung \u24d8',
-    'tooltips.transitionSmoothing':  'Breite der Übergangszone an Nahtkanten. Niedrige Werte halten den Übergang nah an der Naht; höhere Werte glätten einen breiteren Bereich.',
-    'labels.textureSmoothing':       'Texturglättung \u24d8',
-    'tooltips.textureSmoothing':     'Wendet einen Gaußschen Weichzeichner auf die Verschiebungskarte an. Höhere Werte erzeugen weichere, fließendere Oberflächendetails. 0 = aus.',
-    'labels.capAngle':               'Übergangswinkel \u24d8',
-    'tooltips.capAngle':             'Winkel (in Grad) ab dem die Deckel-/Bodenprojektion einsetzt. Kleinere Werte beschränken die Deckelprojektion auf nahezu flache Flächen.',
+    'labels.seamBlend': 'Nahtglättung \u24d8',
+    'tooltips.seamBlend': 'Glättet den scharfen Übergang zwischen Projektionsflächen. Wirksam für Kubische und Zylindrische Modi.',
+    'labels.transitionSmoothing': 'Übergangsglättung \u24d8',
+    'tooltips.transitionSmoothing': 'Breite der Übergangszone an Nahtkanten. Niedrige Werte halten den Übergang nah an der Naht; höhere Werte glätten einen breiteren Bereich.',
+    'labels.textureSmoothing': 'Texturglättung \u24d8',
+    'tooltips.textureSmoothing': 'Wendet einen Gaußschen Weichzeichner auf die Verschiebungskarte an. Höhere Werte erzeugen weichere, fließendere Oberflächendetails. 0 = aus.',
+    'labels.capAngle': 'Übergangswinkel \u24d8',
+    'tooltips.capAngle': 'Winkel (in Grad) ab dem die Deckel-/Bodenprojektion einsetzt. Kleinere Werte beschränken die Deckelprojektion auf nahezu flache Flächen.',
 
     // Winkelmaskierung
-    'sections.maskAngles':           'Winkel maskieren \u24d8',
-    'tooltips.maskAngles':           '0° = keine Maskierung. Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen werden nicht texturiert.',
-    'labels.bottomFaces':            'Unterseiten',
-    'tooltips.bottomFaces':          'Textur auf nach unten gerichteten Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen unterdr\u00fccken',
-    'labels.topFaces':               'Oberseiten',
-    'tooltips.topFaces':             'Textur auf nach oben gerichteten Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen unterdr\u00fccken',
+    'sections.maskAngles': 'Winkel maskieren \u24d8',
+    'tooltips.maskAngles': '0° = keine Maskierung. Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen werden nicht texturiert.',
+    'labels.bottomFaces': 'Unterseiten',
+    'tooltips.bottomFaces': 'Textur auf nach unten gerichteten Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen unterdr\u00fccken',
+    'labels.topFaces': 'Oberseiten',
+    'tooltips.topFaces': 'Textur auf nach oben gerichteten Fl\u00e4chen innerhalb dieses Winkels zur Horizontalen unterdr\u00fccken',
 
     // Surface masking section
-    'sections.surfaceMasking':       'Fl\u00e4chenmaskierung \u24d8',
-    'sections.surfaceSelection':     'Fl\u00e4chenauswahl',
-    'tooltips.surfaceMasking':       'Fl\u00e4chen maskieren, um zu steuern, welche Bereiche Verschiebung erhalten.',
-    'tooltips.surfaceSelection':     'Ausgew\u00e4hlte Fl\u00e4chen erscheinen gr\u00fcn und sind die einzigen, die beim Export eine Verschiebung erhalten.',
-    'excl.modeExclude':              'Ausschlie\u00dfen',
-    'excl.modeExcludeTitle':         'Ausschlussmodus: bemalte Fl\u00e4chen erhalten keine Texturverschiebung',
-    'excl.modeIncludeOnly':          'Nur einschlie\u00dfen',
-    'excl.modeIncludeOnlyTitle':     'Nur-einschlie\u00dfen-Modus: nur bemalte Fl\u00e4chen erhalten Texturverschiebung',
-    'excl.toolBrush':                'Pinsel',
-    'excl.toolBrushTitle':           'Pinsel: Dreiecke zum Ausschlie\u00dfen einf\u00e4rben',
-    'excl.toolFill':                 'F\u00fcllen',
-    'excl.toolFillTitle':            'F\u00fcllen: Fl\u00e4che bis zu einem Winkel fluten',
-    'excl.shiftHint':                'Shift gedr\u00fcckt halten zum Radieren',
-    'labels.type':                   'Typ',
-    'brushType.single':              'Einzeln',
-    'brushType.circle':              'Kreis',
-    'labels.size':                   'Gr\u00f6\u00dfe',
-    'labels.maxAngle':               'Max. Winkel',
-    'tooltips.maxAngle':             'Maximaler Di\u00e4dralwinkel zwischen angrenzenden Dreiecken f\u00fcr die F\u00fcllung',
-    'ui.clearAll':                   'Alles l\u00f6schen',
-    'excl.initExcluded':             '0 Fl\u00e4chen maskiert',
-    'excl.faceExcluded':             '{n} Fl\u00e4che maskiert',
-    'excl.facesExcluded':            '{n} Fl\u00e4chen maskiert',
-    'excl.faceSelected':             '{n} Fl\u00e4che ausgew\u00e4hlt',
-    'excl.facesSelected':            '{n} Fl\u00e4chen ausgew\u00e4hlt',
-    'excl.hintExclude':              'Maskierte Fl\u00e4chen erscheinen orange und erhalten beim Export keine Verschiebung.',
-    'excl.hintInclude':              'Ausgew\u00e4hlte Fl\u00e4chen erscheinen gr\u00fcn und sind die einzigen, die beim Export eine Verschiebung erhalten.',
+    'sections.surfaceMasking': 'Fl\u00e4chenmaskierung \u24d8',
+    'sections.surfaceSelection': 'Fl\u00e4chenauswahl',
+    'tooltips.surfaceMasking': 'Fl\u00e4chen maskieren, um zu steuern, welche Bereiche Verschiebung erhalten.',
+    'tooltips.surfaceSelection': 'Ausgew\u00e4hlte Fl\u00e4chen erscheinen gr\u00fcn und sind die einzigen, die beim Export eine Verschiebung erhalten.',
+    'excl.modeExclude': 'Ausschlie\u00dfen',
+    'excl.modeExcludeTitle': 'Ausschlussmodus: bemalte Fl\u00e4chen erhalten keine Texturverschiebung',
+    'excl.modeIncludeOnly': 'Nur einschlie\u00dfen',
+    'excl.modeIncludeOnlyTitle': 'Nur-einschlie\u00dfen-Modus: nur bemalte Fl\u00e4chen erhalten Texturverschiebung',
+    'excl.toolBrush': 'Pinsel',
+    'excl.toolBrushTitle': 'Pinsel: Dreiecke zum Ausschlie\u00dfen einf\u00e4rben',
+    'excl.toolFill': 'F\u00fcllen',
+    'excl.toolFillTitle': 'F\u00fcllen: Fl\u00e4che bis zu einem Winkel fluten',
+    'excl.shiftHint': 'Shift gedr\u00fcckt halten zum Radieren',
+    'labels.type': 'Typ',
+    'brushType.single': 'Einzeln',
+    'brushType.circle': 'Kreis',
+    'labels.size': 'Gr\u00f6\u00dfe',
+    'labels.maxAngle': 'Max. Winkel',
+    'tooltips.maxAngle': 'Maximaler Di\u00e4dralwinkel zwischen angrenzenden Dreiecken f\u00fcr die F\u00fcllung',
+    'ui.clearAll': 'Alles l\u00f6schen',
+    'excl.initExcluded': '0 Fl\u00e4chen maskiert',
+    'excl.faceExcluded': '{n} Fl\u00e4che maskiert',
+    'excl.facesExcluded': '{n} Fl\u00e4chen maskiert',
+    'excl.faceSelected': '{n} Fl\u00e4che ausgew\u00e4hlt',
+    'excl.facesSelected': '{n} Fl\u00e4chen ausgew\u00e4hlt',
+    'excl.hintExclude': 'Maskierte Fl\u00e4chen erscheinen orange und erhalten beim Export keine Verschiebung.',
+    'excl.hintInclude': 'Ausgew\u00e4hlte Fl\u00e4chen erscheinen gr\u00fcn und sind die einzigen, die beim Export eine Verschiebung erhalten.',
 
     // Precision masking
-    'precision.label':               'Pr\u00e4zision (Beta) \u24d8',
-    'precision.labelTitle':          'Netz im Hintergrund unterteilen, damit der Pinsel feiner ausw\u00e4hlen kann',
-    'precision.outdated':            '\u26a0 Veraltet',
-    'precision.refreshTitle':        'Netz erneut unterteilen, um zur aktuellen Pinselgr\u00f6\u00dfe zu passen',
-    'precision.triCount':            '{n} \u25b3',
-    'precision.refining':            'Wird verfeinert\u2026',
-    'precision.warningBody':         'Gesch\u00e4tzt ~{n} Dreiecke. Dies kann den Browser verlangsamen. Fortfahren?',
+    'precision.label': 'Pr\u00e4zision (Beta) \u24d8',
+    'precision.labelTitle': 'Netz im Hintergrund unterteilen, damit der Pinsel feiner ausw\u00e4hlen kann',
+    'precision.outdated': '\u26a0 Veraltet',
+    'precision.refreshTitle': 'Netz erneut unterteilen, um zur aktuellen Pinselgr\u00f6\u00dfe zu passen',
+    'precision.triCount': '{n} \u25b3',
+    'precision.refining': 'Wird verfeinert\u2026',
+    'precision.warningBody': 'Gesch\u00e4tzt ~{n} Dreiecke. Dies kann den Browser verlangsamen. Fortfahren?',
 
     // Symmetric displacement
-    'labels.symmetricDisplacement':  'Symmetrische Verschiebung \u24d8',
-    'tooltips.symmetricDisplacement':'Wenn aktiv: 50% Grau = keine Verschiebung; Weiß nach außen, Schwarz nach innen. H\u00e4lt das Volumen des Teils in etwa konstant.',
+    'labels.symmetricDisplacement': 'Symmetrische Verschiebung \u24d8',
+    'tooltips.symmetricDisplacement': 'Wenn aktiv: 50% Grau = keine Verschiebung; Weiß nach außen, Schwarz nach innen. H\u00e4lt das Volumen des Teils in etwa konstant.',
 
     // Displacement preview
-    'labels.displacementPreview':    '3D-Vorschau \u24d8',
-    'tooltips.displacementPreview':  'Unterteilt das Netz und verschiebt Punkte in Echtzeit, damit die tats\u00e4chliche Tiefe sichtbar wird. GPU-intensiv bei komplexen Modellen.',
+    'labels.displacementPreview': '3D-Vorschau \u24d8',
+    'tooltips.displacementPreview': 'Unterteilt das Netz und verschiebt Punkte in Echtzeit, damit die tats\u00e4chliche Tiefe sichtbar wird. GPU-intensiv bei komplexen Modellen.',
 
     // Auf Fl\u00e4che platzieren
-    'ui.placeOnFace':                'Auf Fl\u00e4che platzieren',
-    'ui.placeOnFaceTitle':           'Klicken Sie auf eine Fl\u00e4che, um sie nach unten auf das Druckbett auszurichten',
-    'progress.subdividingPreview':   'Vorschau wird vorbereitet\u2026',
+    'ui.placeOnFace': 'Auf Fl\u00e4che platzieren',
+    'ui.placeOnFaceTitle': 'Klicken Sie auf eine Fl\u00e4che, um sie nach unten auf das Druckbett auszurichten',
+    'progress.subdividingPreview': 'Vorschau wird vorbereitet\u2026',
 
     // Amplitude overlap warning
-    'warnings.amplitudeOverlap':     '\u26a0 Amplitude \u00fcberschreitet 10% der kleinsten Modellabmessung \u2014 beim Export k\u00f6nnen Geometrie\u00fcberschneidungen auftreten.',
+    'warnings.amplitudeOverlap': '\u26a0 Amplitude \u00fcberschreitet 10% der kleinsten Modellabmessung \u2014 beim Export k\u00f6nnen Geometrie\u00fcberschneidungen auftreten.',
 
     // Export section
-    'sections.export':               'Export \u24d8',
-    'tooltips.export':               'Kleinere Kantenl\u00e4nge = mehr Texturdetails. Die Ausgabe wird dann auf das Dreieckslimit vereinfacht.',
-    'labels.resolution':             'Aufl\u00f6sung',
-    'tooltips.resolution':           'Kanten l\u00e4nger als dieser Wert werden beim Export unterteilt',
-    'labels.outputTriangles':        'Max Dreiecke',
-    'tooltips.outputTriangles':      'Das Netz wird zuerst vollst\u00e4ndig unterteilt, dann auf diese Anzahl dezimiert',
-    'warnings.safetyCapHit':         '\u26a0 20-Mio.-Dreiecke-Sicherheitsgrenze bei der Unterteilung erreicht \u2014 Ergebnis kann gr\u00f6ber als gew\u00fcnschte Kantenl\u00e4nge sein.',
-    'ui.exportStl':                  'STL exportieren',
+    'sections.export': 'Export \u24d8',
+    'tooltips.export': 'Kleinere Kantenl\u00e4nge = mehr Texturdetails. Die Ausgabe wird dann auf das Dreieckslimit vereinfacht.',
+    'labels.resolution': 'Aufl\u00f6sung',
+    'tooltips.resolution': 'Kanten l\u00e4nger als dieser Wert werden beim Export unterteilt',
+    'labels.outputTriangles': 'Max Dreiecke',
+    'tooltips.outputTriangles': 'Das Netz wird zuerst vollst\u00e4ndig unterteilt, dann auf diese Anzahl dezimiert',
+    'warnings.safetyCapHit': '\u26a0 20-Mio.-Dreiecke-Sicherheitsgrenze bei der Unterteilung erreicht \u2014 Ergebnis kann gr\u00f6ber als gew\u00fcnschte Kantenl\u00e4nge sein.',
+    'ui.exportStl': 'STL exportieren',
 
     // Export progress stages
-    'progress.subdividing':          'Netz wird verfeinert\u2026',
-    'progress.refining':             'Verfeinern: {cur} Dreiecke, l\u00e4ngste Kante {edge}',
+    'progress.subdividing': 'Netz wird verfeinert\u2026',
+    'progress.refining': 'Verfeinern: {cur} Dreiecke, l\u00e4ngste Kante {edge}',
     'progress.applyingDisplacement': 'Textur auf {n} Dreiecke anwenden\u2026',
-    'progress.displacingVertices':   'Punkte werden verschoben\u2026',
-    'progress.decimatingTo':         '{from} \u2192 {to} Dreiecke vereinfachen\u2026',
-    'progress.decimating':           'Vereinfachen: {cur} \u2192 {to} Dreiecke',
-    'progress.writingStl':           'STL schreiben\u2026',
-    'progress.done':                 'Fertig!',
-    'progress.processing':           'Verarbeitung\u2026',
+    'progress.displacingVertices': 'Punkte werden verschoben\u2026',
+    'progress.decimatingTo': '{from} \u2192 {to} Dreiecke vereinfachen\u2026',
+    'progress.decimating': 'Vereinfachen: {cur} \u2192 {to} Dreiecke',
+    'progress.writingStl': 'STL schreiben\u2026',
+    'progress.done': 'Fertig!',
+    'progress.processing': 'Verarbeitung\u2026',
 
     // License popup
     'license.btn':    'Lizenz & Nutzung',
@@ -341,36 +343,223 @@ export const TRANSLATIONS = {
     'license.item8':  'Quellcode verf\u00fcgbar auf <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">GitHub</a>.',
 
     // Impressum & Datenschutz
-    'imprint.btn':            'Impressum & Datenschutz',
-    'imprint.title':          'Impressum & Datenschutzerkl\u00e4rung',
+    'imprint.btn': 'Impressum & Datenschutz',
+    'imprint.title': 'Impressum & Datenschutzerkl\u00e4rung',
     'imprint.sectionImprint': 'Impressum',
-    'imprint.info':           'CNC Kitchen<br>Stefan Hermann<br>Bahnhofstr. 2<br>88145 Hergatz<br>Deutschland',
-    'imprint.contact':        'E-Mail: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Telefon: +49 175 2011824<br><em>Die Telefonnummer ist ausschlie\u00dflich f\u00fcr rechtliche/gesch\u00e4ftliche Anfragen \u2014 nicht f\u00fcr Support.</em>',
-    'imprint.odr':             'Plattform der EU-Kommission zur Online-Streitbeilegung: <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
+    'imprint.info': 'CNC Kitchen<br>Stefan Hermann<br>Bahnhofstr. 2<br>88145 Hergatz<br>Deutschland',
+    'imprint.contact': 'E-Mail: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Telefon: +49 175 2011824<br><em>Die Telefonnummer ist ausschlie\u00dflich f\u00fcr rechtliche/gesch\u00e4ftliche Anfragen \u2014 nicht f\u00fcr Support.</em>',
+    'imprint.odr': 'Plattform der EU-Kommission zur Online-Streitbeilegung: <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
     'imprint.sectionPrivacy': 'Datenschutzerkl\u00e4rung',
-    'imprint.privacyIntro':   '<strong>Verantwortlicher</strong> gem. Art. 4 Abs. 7 DSGVO: Stefan Hermann, Bahnhofstr. 2, 88145 Hergatz, Deutschland.',
+    'imprint.privacyIntro': '<strong>Verantwortlicher</strong> gem. Art. 4 Abs. 7 DSGVO: Stefan Hermann, Bahnhofstr. 2, 88145 Hergatz, Deutschland.',
     'imprint.privacyHosting': 'Diese Website wird auf <strong>GitHub Pages</strong> (GitHub Inc. / Microsoft Corp., 88 Colin P Kelly Jr St, San Francisco, CA 94107, USA) gehostet. Beim Besuch dieser Seite kann GitHub Ihre IP-Adresse in Server-Logs verarbeiten. Rechtsgrundlage: Art. 6 Abs. 1 lit. f DSGVO (berechtigtes Interesse an der Bereitstellung der Website). Siehe <a href="https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement" target="_blank" rel="noopener">Datenschutzerkl\u00e4rung von GitHub</a>.',
-    'imprint.privacyLocal':   'Dieses Tool speichert Nutzereinstellungen (Sprache, Theme) im <strong>localStorage</strong> Ihres Browsers. Diese Daten verlassen Ihr Ger\u00e4t nicht und werden nicht an einen Server \u00fcbertragen.',
-    'imprint.privacyNoCookies':'Diese Website verwendet <strong>keine</strong> Cookies, Analyse-Tools oder sonstige Tracking-Technologien.',
-    'imprint.privacyExternal':'Diese Seite enth\u00e4lt Links zu externen Websites (z.B. CNCKitchen.STORE, PayPal). F\u00fcr deren Datenschutzrichtlinien \u00fcbernehmen wir keine Verantwortung.',
-    'imprint.privacyRights':  'Nach der DSGVO haben Sie das Recht auf <strong>Auskunft, Berichtigung, L\u00f6schung, Einschr\u00e4nkung der Verarbeitung, Daten\u00fcbertragbarkeit</strong> sowie das Recht auf <strong>Beschwerde bei einer Aufsichtsbeh\u00f6rde</strong>.',
+    'imprint.privacyLocal': 'Dieses Tool speichert Nutzereinstellungen (Sprache, Theme) im <strong>localStorage</strong> Ihres Browsers. Diese Daten verlassen Ihr Ger\u00e4t nicht und werden nicht an einen Server \u00fcbertragen.',
+    'imprint.privacyNoCookies': 'Diese Website verwendet <strong>keine</strong> Cookies, Analyse-Tools oder sonstige Tracking-Technologien.',
+    'imprint.privacyExternal': 'Diese Seite enth\u00e4lt Links zu externen Websites (z.B. CNCKitchen.STORE, PayPal). F\u00fcr deren Datenschutzrichtlinien \u00fcbernehmen wir keine Verantwortung.',
+    'imprint.privacyRights': 'Nach der DSGVO haben Sie das Recht auf <strong>Auskunft, Berichtigung, L\u00f6schung, Einschr\u00e4nkung der Verarbeitung, Daten\u00fcbertragbarkeit</strong> sowie das Recht auf <strong>Beschwerde bei einer Aufsichtsbeh\u00f6rde</strong>.',
 
     // Sponsor modal
-    'sponsor.title':           'Danke für die Nutzung von BumpMesh by CNC Kitchen!',
-    'sponsor.body':            'Dieses Tool wird von CNC Kitchen <strong>komplett kostenlos</strong> bereitgestellt.<br>Während dein STL verarbeitet wird, schau doch mal im Shop vorbei, der uns hilft, coole Sachen für dich zu machen!',
-    'sponsor.visitStore':      '\uD83D\uDED2 CNCKitchen.STORE besuchen',
-    'sponsor.donate':          '\uD83D\uDC99 Via PayPal spenden',
-    'sponsor.dontShow':        'Nicht mehr anzeigen',
-    'sponsor.closeAndContinue':'Schlie\u00dfen &amp; Weiter',
+    'sponsor.title': 'Danke für die Nutzung von BumpMesh by CNC Kitchen!',
+    'sponsor.body': 'Dieses Tool wird von CNC Kitchen <strong>komplett kostenlos</strong> bereitgestellt.<br>Während dein STL verarbeitet wird, schau doch mal im Shop vorbei, der uns hilft, coole Sachen für dich zu machen!',
+    'sponsor.visitStore': '\uD83D\uDED2 CNCKitchen.STORE besuchen',
+    'sponsor.donate': '\uD83D\uDC99 Via PayPal spenden',
+    'sponsor.dontShow': 'Nicht mehr anzeigen',
+    'sponsor.closeAndContinue': 'Schlie\u00dfen &amp; Weiter',
 
     // Store CTA
-    'cta.store':            'Dieses Tool unterst\u00fctzen? Shoppe bei <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> oder spende via <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener noreferrer">PayPal</a>',
-    'cta.storeDismiss':    'Ausblenden',
+    'cta.store': 'Dieses Tool unterst\u00fctzen? Shoppe bei <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> oder spende via <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener noreferrer">PayPal</a>',
+    'cta.storeDismiss': 'Ausblenden',
 
     // Alerts
-    'alerts.loadFailed':   'Modell konnte nicht geladen werden: {msg}',
+    'alerts.loadFailed': 'Modell konnte nicht geladen werden: {msg}',
     'alerts.exportFailed': 'Export fehlgeschlagen: {msg}',
   },
+
+  it: {
+    'lang.name': 'Italiano',
+    // Theme toggle
+    'theme.dark': 'Tema Scuro',
+    'theme.light': 'Tema Chiaro',
+    'theme.toggleTitle': 'Attiva/disattiva modalità chiara/scura',
+    'theme.toggleAriaLabel': 'Attiva/disattiva modalità chiara/scura',
+
+    // Drop zone
+    'dropHint.text': 'Trascina qui un file <strong>.stl</strong>, <strong>.obj</strong> o <strong>.3mf</strong><br/>o <label for="stl-file-input" class="link-label">clicca per sfogliare</label>',
+
+    // Viewport footer
+    'ui.wireframe': 'Wireframe',
+    'ui.controlsHint': 'Trascina a sx: orbita \u00a0·\u00a0 Trascina a dx: sposta \u00a0·\u00a0 Scorri: zoom',
+    'ui.meshInfo': '{n} triangoli · {mb} MB · {sx} × {sy} × {sz} mm',
+
+    // Load model button
+    'ui.loadStl': 'Carica Modello\u2026',
+
+    // Displacement map section
+    'sections.displacementMap': 'Mappa di Deformazione',
+    'ui.uploadCustomMap': 'Carica mappa personalizzata',
+    'ui.noMapSelected': 'Nessuna mappa selezionata',
+
+    // Projection section
+    'sections.projection': 'Proiezione',
+    'labels.mode': 'Modalità',
+    'projection.triplanar': 'Triplanare',
+    'projection.cubic': 'Cubica (Box)',
+    'projection.cylindrical': 'Cilindrica',
+    'projection.spherical': 'Sferica',
+    'projection.planarXY': 'Planare XY',
+    'projection.planarXZ': 'Planare XZ',
+    'projection.planarYZ': 'Planare YZ',
+
+    // Transform section
+    'sections.transform': 'Trasformazioni',
+    'labels.scaleU': 'Scala U',
+    'labels.scaleV': 'Scala V',
+    'labels.offsetU': 'Offset U',
+    'labels.offsetV': 'Offset V',
+    'labels.rotation': 'Rotazione',
+    'tooltips.proportionalScaling': 'Scala proporzionale (U = V)',
+    'tooltips.proportionalScalingAria': 'Scala proporzionale (U = V)',
+
+    // Displacement section
+    'sections.displacement': 'Profondità Texture',
+    'labels.amplitude': 'Ampiezza',
+
+    // Seam blend
+    'labels.seamBlend': 'Unione dei bordi \u24d8',
+    'tooltips.seamBlend': 'Attenua il bordo netto dove si incontrano le facce della proiezione. Efficace per le modalità Cubica e Cilindrica.',
+    'labels.transitionSmoothing': 'Smoothing di transizione \u24d8',
+    'tooltips.transitionSmoothing': 'Larghezza della zona di fusione vicino ai bordi della giuntura. Valori più bassi mantengono le transizioni aderenti alla giuntura; valori più alti sfumano una fascia più ampia.',
+    'labels.textureSmoothing': 'Smoothing della texture \u24d8',
+    'tooltips.textureSmoothing': 'Applica una sfocatura gaussiana alla mappa di deformazione. Valori più alti producono dettagli superficiali più morbidi e graduali. 0 = disattivato.',
+    'labels.capAngle': 'Angolo di copertura \u24d8',
+    'tooltips.capAngle': 'Angolo (in gradi) rispetto alla verticale al quale entra in gioco la proiezione della copertura superiore/inferiore. Valori più piccoli limitano la proiezione della copertura a facce quasi piatte.',
+
+    // Mask angles section
+    'sections.maskAngles': 'Angoli di mascheramento \u24d8',
+    'tooltips.maskAngles': '0° = nessuna mascheratura. Le superfici comprese in questo angolo rispetto all\'orizzontale non saranno texturizzate.',
+    'labels.bottomFaces': 'Facce inferiori',
+    'tooltips.bottomFaces': 'Elimina la texture sulle superfici rivolte verso il basso entro questo angolo rispetto all\'orizzontale',
+    'labels.topFaces': 'Facce superiori',
+    'tooltips.topFaces': 'Elimina la texture sulle superfici rivolte verso l\'alto entro questo angolo rispetto all\'orizzontale',
+
+    // Surface masking section
+    'sections.surfaceMasking': 'Mascheramento delle superfici \u24d8',
+    'sections.surfaceSelection': 'Selezione delle superfici',
+    'tooltips.surfaceMasking': 'Mascherare le superfici per controllare quali aree subiscono la deformazione.',
+    'tooltips.surfaceSelection': 'Le superfici selezionate appaiono in verde e saranno le uniche a subire la deformazione durante l\'esportazione.',
+    'excl.modeExclude': 'Escludi',
+    'excl.modeExcludeTitle': 'Modalità Escludi: le superfici dipinte non subiranno la deformazione della texture',
+    'excl.modeIncludeOnly': 'Includi solo',
+    'excl.modeIncludeOnlyTitle': 'Modalità Includi solo: solo le superfici dipinte subiranno la deformazione della texture',
+    'excl.toolBrush': 'Pennello',
+    'excl.toolBrushTitle': 'Pennello: dipingi i triangoli da escludere',
+    'excl.toolFill': 'Riempimento',
+    'excl.toolFillTitle': 'Riempimento a secchiello: riempi la superficie fino a un angolo di soglia',
+    'excl.shiftHint': 'Tieni premuto Shift per cancellare',
+    'labels.type': 'Tipo',
+    'brushType.single': 'Singolo',
+    'brushType.circle': 'Cerchio',
+    'labels.size': 'Dimensione',
+    'labels.maxAngle': 'Angolo massimo',
+    'tooltips.maxAngle': 'Angolo diedro massimo tra triangoli adiacenti che il riempimento può attraversare',
+    'ui.clearAll': 'Cancella tutto',
+    'excl.initExcluded': '0 facce mascherate',
+    'excl.faceExcluded': '{n} facce mascherate',
+    'excl.facesExcluded': '{n} facce mascherate',
+    'excl.faceSelected': '{n} faccia selezionata',
+    'excl.facesSelected': '{n} facce selezionate',
+    'excl.hintExclude': 'Le superfici mascherate appaiono in arancione e non riceveranno deformazione durante l\'esportazione',
+    'excl.hintInclude': 'Le superfici selezionate appaiono verdi e saranno le uniche a ricevere la deformazione durante l\'esportazione.',
+
+    // Precision masking
+    'precision.label': 'Precisione (Beta) \u24d8',
+    'precision.labelTitle': 'Suddividi la mesh in background in modo che il pennello selezioni con una granularità più fine',
+    'precision.outdated': '\u26a0 Obsoleto',
+    'precision.refreshTitle': 'Risuddividi la mesh per adattarla alle dimensioni attuali del pennello',
+    'precision.triCount': '{n} \u25b3',
+    'precision.refining': 'Raffinamento\u2026',
+    'precision.warningBody': 'Stima ~{n} triangoli. Ciò potrebbe rallentare il browser. Continuare?',
+
+    // Symmetric displacement
+    'labels.symmetricDisplacement': 'Deformazione simmetrica \u24d8',
+    'tooltips.symmetricDisplacement': 'Quando è attivo, il grigio al 50% = nessuna deformazione; il bianco spinge verso l\'esterno, il nero spinge verso l\'interno. Mantiene il volume della parte approssimativamente costante.',
+
+    // Displacement preview
+    'labels.displacementPreview': 'Anteprima 3D \u24d8',
+    'tooltips.displacementPreview': 'Suddivide la mesh e sposta i vertici in tempo reale in modo da poter valutare la profondità effettiva. Richiede un uso intensivo della GPU su modelli complessi.',
+
+    // Place on face
+    'ui.placeOnFace': 'Posiziona su una faccia',
+    'ui.placeOnFaceTitle': 'Clicca su una faccia per orientarla verso il basso sul piano di stampa',
+    'progress.subdividingPreview': 'Preparazione dell\'anteprima...',
+
+    // Amplitude overlap warning
+    'warnings.amplitudeOverlap': '\u26a0 L\'ampiezza supera il 10% della dimensione più piccola del modello \u2014 potrebbero verificarsi sovrapposizioni geometriche nel file STL esportato.',
+
+
+    // Export section
+    'sections.export': 'Esporta \u24d8',
+    'tooltips.export': 'Lunghezza del bordo più piccola = dettagli della deformazione più precisi. L\'output viene quindi ridotto al limite di triangoli.',
+    'labels.resolution': 'Risoluzione',
+    'tooltips.resolution': 'I bordi più lunghi di questo valore verranno suddivisi durante l\'esportazione',
+    'labels.outputTriangles': 'Triangoli in uscita',
+    'tooltips.outputTriangles': 'La mesh viene prima suddivisa completamente, poi decimata fino a questo numero',
+    'warnings.safetyCapHit': '\u26a0 Limite di sicurezza di 20 milioni di triangoli raggiunto durante la suddivisione \u2014 il risultato potrebbe comunque essere più grossolano della lunghezza del bordo richiesta.',
+    'ui.exportStl': 'Esporta STL',
+
+    // Export progress stages
+    'progress.subdividing': 'Suddivisione della mesh\u2026',
+    'progress.refining': 'Raffinamento: {cur} triangoli, spigolo più lungo {edge}',
+    'progress.applyingDisplacement': 'Applicazione dello spostamento a {n} triangoli\u2026',
+    'progress.displacingVertices': 'Spostamento dei vertici\u2026',
+    'progress.decimatingTo': 'Semplificazione da {from} \u2192 {to} triangoli\u2026',
+    'progress.decimating': 'Semplificazione: {cur} \u2192 {to} triangoli',
+    'progress.writingStl': 'Scrittura STL\u2026',
+    'progress.done': 'Fatto!',
+    'progress.processing': 'Elaborazione\u2026',
+
+    // License popup
+    'license.btn': 'Licenza e condizioni',
+    'license.title': 'Licenza e condizioni',
+    'license.item1': 'Utilizzo gratuito per qualsiasi scopo, compresi <strong>lavori commerciali</strong> (ad es. la creazione di texture per file STL destinati a clienti o prodotti).',
+    'license.item2': 'L\'attribuzione è <strong>gradita</strong> ma <strong>non richiesta</strong> quando si utilizza questo strumento così com\'è.',
+    'license.item3': 'Vuoi sostenere questo strumento? Acquista su <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener">CNCKitchen.STORE</a> o fai una donazione su <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener">PayPal</a>.',
+    'license.item4': 'Questo strumento viene fornito <strong>così com\'è</strong> senza <strong>alcuna garanzia</strong> di alcun tipo. L\'utilizzo è a proprio rischio.',
+    'license.item5': '<strong>Non viene fornita alcuna assistenza</strong>. L\'autore non ha alcun obbligo di correggere bug, rispondere a domande o aggiornare questo strumento. Detto questo, segnalazioni di bug e richieste di funzionalità sono sempre ben accette all\'indirizzo <a href="mailto:texturizer@cnckitchen.com">texturizer@cnckitchen.com</a>.',
+    'license.item6': 'L\'autore non potrà essere ritenuto <strong>responsabile</strong> per eventuali danni, perdita di dati o problemi derivanti dall\'uso di questo strumento.',
+    'license.item7': 'Vuoi ottenere una licenza o incorporare questo strumento per la tua attività o il tuo sito web? Contattaci all\'indirizzo <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a>.',
+    'license.item8': 'Codice sorgente disponibile su <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">GitHub</a>.',
+
+    // Imprint & Privacy
+    'imprint.btn': 'Note legali e privacy',
+    'imprint.title': 'Note legali e informativa sulla privacy',
+    'imprint.sectionImprint': 'Note legali (Impressum)',
+    'imprint.info': 'CNC Kitchen<br>Stefan Hermann<br>Bahnhofstr. 2<br>88145 Hergatz<br>Germania',
+    'imprint.contact': 'E-mail: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Telefono: +49 175 2011824<br><em>Il numero di telefono è riservato esclusivamente a richieste legali/commerciali \u2014 non per l\'assistenza. </em>',
+    'imprint.odr': 'Piattaforma UE per la risoluzione delle controversie online: <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
+    'imprint.sectionPrivacy': 'Informativa sulla privacy (Datenschutzerklärung)',
+    'imprint.privacyIntro': '<strong>Titolare del trattamento</strong> (Verantwortlicher gem. Art. 4 Abs. 7 DSGVO): Stefan Hermann, Bahnhofstr. 2, 88145 Hergatz, Germania.',
+    'imprint.privacyHosting': 'Questo sito web è ospitato su <strong>GitHub Pages</strong> (GitHub Inc. / Microsoft Corp., 88 Colin P Kelly Jr St, San Francisco, CA 94107, USA). Quando visiti questo sito, GitHub potrebbe elaborare il tuo indirizzo IP nei log del server. Base giuridica: Art. 6(1)(f) GDPR (interesse legittimo alla fornitura del sito web). Vedi <a href="https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement" target="_blank" rel="noopener">Informativa sulla privacy di GitHub</a>.',
+    'imprint.privacyLocal': 'Questo strumento memorizza le preferenze dell\'utente (lingua, tema) nel <strong>localStorage</strong> del tuo browser. Questi dati non lasciano mai il tuo dispositivo e non vengono trasmessi a nessun server.',
+    'imprint.privacyNoCookies': 'Questo sito web <strong>non</strong> utilizza cookie, strumenti di analisi o tecnologie di tracciamento.',
+    'imprint.privacyExternal': 'Questo sito contiene link a siti web esterni (ad es. CNCKitchen.STORE, PayPal). Questi siti hanno le proprie politiche sulla privacy, sulle quali non abbiamo alcun controllo.',
+    'imprint.privacyRights': 'Ai sensi del GDPR hai il diritto di <strong>accesso, rettifica, cancellazione, limitazione del trattamento, portabilità dei dati</strong> e il diritto di <strong>presentare un reclamo</strong> presso un\'autorità di controllo.',
+
+    // Sponsor modal
+    'sponsor.title': 'Grazie per aver scelto BumpMesh di CNC Kitchen!',
+    'sponsor.body': 'Questo strumento è offerto <strong>completamente gratis</strong> da CNC Kitchen.<br>Mentre il tuo file STL viene elaborato, perché non dai un\'occhiata al negozio che ci aiuta a continuare a creare cose fantastiche per te?',
+    'sponsor.visitStore': '\uD83D\uDED2 Visita CNCKitchen.STORE',
+    'sponsor.donate': '\uD83D\uDC99 Dona su PayPal',
+    'sponsor.dontShow': 'Non mostrare più questo messaggio',
+    'sponsor.closeAndContinue': 'Chiudi e continua',
+
+    // Store CTA
+    'cta.store': 'Vuoi sostenere questo strumento? Acquista su <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> o dona su <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener noreferrer">PayPal</a>',
+    'cta.storeDismiss': 'Chiudi',
+
+    // Alerts
+    'alerts.loadFailed': 'Caricamento del modello fallito: {msg}',
+    'alerts.exportFailed': 'Esportazione fallita: {msg}',
+  },
 };
 
 // ── State ─────────────────────────────────────────────────────────────────────
@@ -439,10 +628,15 @@ export function initLang() {
   const saved = localStorage.getItem('stlt-lang');
   if (saved && TRANSLATIONS[saved]) {
     _currentLang = saved;
-  } else if (navigator.language && navigator.language.toLowerCase().startsWith('de')) {
-    _currentLang = 'de';
-  } else {
-    _currentLang = 'en';
+  }
+  else {
+    const lang = navigator.language.split('-')[0];
+    if (TRANSLATIONS[lang]) {
+      _currentLang = lang;
+    }
+    else {
+      _currentLang = 'en';
+    }
   }
   document.documentElement.setAttribute('data-lang', _currentLang);
   document.documentElement.setAttribute('lang', _currentLang);
diff --git a/js/main.js b/js/main.js
index 93fc802..018284e 100644
--- a/js/main.js
+++ b/js/main.js
@@ -11,7 +11,7 @@ import { decimate }           from './decimation.js';
 import { exportSTL }          from './exporter.js';
 import { buildAdjacency, bucketFill,
          buildExclusionOverlayGeo, buildFaceWeights } from './exclusion.js';
-import { t, initLang, setLang, getLang, applyTranslations } from './i18n.js';
+import { t, initLang, setLang, getLang, applyTranslations, TRANSLATIONS } from './i18n.js';
 
 // ── State ─────────────────────────────────────────────────────────────────────
 
@@ -239,6 +239,9 @@ const imprintLink    = document.getElementById('imprint-link');
 const imprintOverlay = document.getElementById('imprint-overlay');
 const imprintClose   = document.getElementById('imprint-close');
 
+// ── Language selector DOM refs ────────────────────────────────────────────────────
+const languageSelector = document.querySelector('.lang-seg');
+
 // ── Scale slider log helpers ──────────────────────────────────────────────────
 // Slider stores 0–1000; actual scale spans 0.05–10 on a log axis.
 // Middle position 500 → scale ~0.71 (log midpoint between 0.05 and 10).
@@ -265,15 +268,46 @@ initViewer(canvas);
 // Apply saved theme to 3D viewport on startup
 setViewerTheme(document.documentElement.getAttribute('data-theme') === 'light');
 
+// Populate the language selector
+function populateLanguageSelector() {
+  if (!languageSelector) return;
+  languageSelector.innerHTML = '';
+  
+  const select = document.createElement('select');
+  select.className = 'lang-dropdown';
+  
+  for (const langKey in TRANSLATIONS) {
+    const opt = document.createElement('option');
+    opt.value = langKey;
+    opt.className = 'lang-option';
+    opt.textContent = TRANSLATIONS[langKey]['lang.name'] || langKey.toUpperCase();
+    select.appendChild(opt);
+  }
+  
+  select.addEventListener('change', (e) => {
+    setLang(e.target.value);
+    // Re-translate <option> elements (innerHTML won't reach these)
+    document.querySelectorAll('select[id="mapping-mode"] option[data-i18n-opt]').forEach(opt => {
+      opt.textContent = t(opt.dataset.i18nOpt);
+    });
+    // Refresh dynamic count text to current language
+    if (currentGeometry) refreshExclusionOverlay();
+  });
+  
+  languageSelector.appendChild(select);
+}
+populateLanguageSelector();
+
 // Initialise language (reads localStorage / browser preference, applies translations)
 initLang();
 
-// Sync lang buttons to current language
+// Sync lang dropdown to current language
 (function() {
   const lang = getLang();
-  document.querySelectorAll('.lang-btn').forEach(btn => {
-    btn.classList.toggle('active', btn.dataset.langCode === lang);
-  });
+  const select = languageSelector.querySelector('select');
+  if (select) {
+    select.value = lang;
+  }
 })();
 
 // Theme toggle
@@ -340,22 +374,6 @@ function selectPreset(idx, swatchEl) {
 // ── Event wiring ──────────────────────────────────────────────────────────────
 
 function wireEvents() {
-  // ── Language toggle ──
-  document.querySelectorAll('.lang-btn').forEach(btn => {
-    btn.addEventListener('click', () => {
-      const lang = btn.dataset.langCode;
-      setLang(lang);
-      document.querySelectorAll('.lang-btn').forEach(b =>
-        b.classList.toggle('active', b.dataset.langCode === lang));
-      // Re-translate <option> elements (innerHTML won't reach these)
-      document.querySelectorAll('select[id="mapping-mode"] option[data-i18n-opt]').forEach(opt => {
-        opt.textContent = t(opt.dataset.i18nOpt);
-      });
-      // Refresh dynamic count text to current language
-      if (currentGeometry) refreshExclusionOverlay();
-    });
-  });
-
   // ── Model loading ──
   stlFileInput.addEventListener('change', (e) => {
     if (e.target.files[0]) handleModelFile(e.target.files[0]);
diff --git a/style.css b/style.css
index 7d874ab..9285f91 100644
--- a/style.css
+++ b/style.css
@@ -47,31 +47,31 @@
   flex-shrink: 0;
 }
 
-.lang-btn {
+.lang-dropdown {
   height: 28px;
-  padding: 0 10px;
+  padding: 0 24px 0 10px; /* Add right padding for default select arrow if present */
   background: var(--surface2);
   border: none;
-  border-radius: 0;
   color: var(--text-muted);
   font-size: 11px;
   font-weight: 600;
   letter-spacing: 0.05em;
   cursor: pointer;
+  appearance: none; /* Attempt to remove default styling */
+  -moz-appearance: none;
+  -webkit-appearance: none;
+  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5' viewBox='0 0 8 5'%3E%3Cpath fill='%2366667a' d='M0 0l4 4 4-4H0z'/%3E%3C/svg%3E"); /* Custom arrow */
+  background-repeat: no-repeat;
+  background-position: right 8px center;
   transition: background 0.15s, color 0.15s;
 }
 
-.lang-btn:not(:last-child) {
-  border-right: 1px solid var(--border);
-}
-
-.lang-btn:hover {
+.lang-dropdown:hover {
   color: var(--accent);
 }
 
-.lang-btn.active {
-  background: var(--accent);
-  color: #fff;
+.lang-dropdown:focus {
+  outline: none;
 }
 
 /* ── Theme toggle button ─────────────────────────────────────────────── */