// ── Translations ──────────────────────────────────────────────────────────────
// All UI strings in one place. Use {placeholder} syntax for dynamic values.

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',

    // 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',

    // Load model button
    'ui.loadStl':        'Load Model\u2026',

    // Displacement map section
    'sections.displacementMap': 'Displacement Map',
    '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',

    // 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)',

    // Displacement section
    'sections.displacement': 'Texture Depth',
    '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.',

    // 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',

    // 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.',

    // 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?',

    // 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.',

    // 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.',

    // 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',

    // Amplitude overlap warning
    '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',

    // Export progress stages
    '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',

    // License popup
    'license.btn':    'License & Terms',
    'license.title':  'License & Terms',
    'license.item1':  'Free to use for any purpose, including <strong>commercial work</strong> (e.g., texturing STLs for clients or products).',
    'license.item2':  'Attribution is <strong>appreciated</strong> but <strong>not required</strong> when using this tool as-is.',
    'license.item3':  'Support this tool? Shop at <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener">CNCKitchen.STORE</a> or donate on <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener">PayPal</a>.',
    'license.item4':  'This tool is provided <strong>as-is</strong> with <strong>no warranty</strong> of any kind. Use at your own risk.',
    'license.item5':  '<strong>No support</strong> is provided. The author is under no obligation to fix bugs, answer questions, or update this tool. That said, bug reports and feature requests are always welcome at <a href="mailto:texturizer@cnckitchen.com">texturizer@cnckitchen.com</a>.',
    'license.item6':  'The author shall not be held <strong>liable</strong> for any damages, data loss, or issues arising from the use of this tool.',
    'license.item7':  'Want to license or embed this tool for your own business or website? Contact us at <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a>.',

    // Imprint & Privacy
    '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.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.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.',

    // 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',

    // 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',

    // Alerts
    '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',

    // 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',

    // Load model button
    'ui.loadStl':        'Modell laden\u2026',

    // Displacement map section
    'sections.displacementMap': 'Textur',
    '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',

    // 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)',

    // Displacement section
    'sections.displacement': 'Texturtiefe',
    '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.',

    // 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',

    // 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.',

    // 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?',

    // 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.',

    // 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.',

    // 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',

    // Amplitude overlap warning
    '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',

    // Export progress stages
    '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',

    // License popup
    'license.btn':    'Lizenz & Nutzung',
    'license.title':  'Lizenz & Nutzungsbedingungen',
    'license.item1':  'Kostenlos nutzbar f\u00fcr jeden Zweck, auch f\u00fcr <strong>kommerzielle Arbeit</strong> (z.B. Texturierung von STLs f\u00fcr Kunden oder Produkte).',
    'license.item2':  'Namensnennung wird <strong>gesch\u00e4tzt</strong>, ist aber bei der Nutzung dieses Tools <strong>nicht erforderlich</strong>.',
    'license.item3':  'Dieses Tool unterst\u00fctzen? Shoppe bei <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener">CNCKitchen.STORE</a> oder spende via <a href="https://www.paypal.me/CNCKitchen" target="_blank" rel="noopener">PayPal</a>.',
    'license.item4':  'Dieses Tool wird <strong>ohne jegliche Gew\u00e4hrleistung</strong> bereitgestellt. Nutzung auf <strong>eigene Gefahr</strong>.',
    'license.item5':  'Es wird <strong>kein Support</strong> geleistet. Der Autor ist nicht verpflichtet, Fehler zu beheben, Fragen zu beantworten oder das Tool zu aktualisieren. Fehlerberichte und Funktionswünsche sind aber jederzeit willkommen unter <a href="mailto:texturizer@cnckitchen.com">texturizer@cnckitchen.com</a>.',
    'license.item6':  'Der Autor haftet nicht f\u00fcr <strong>Sch\u00e4den</strong>, Datenverlust oder Probleme, die durch die Nutzung dieses Tools entstehen.',
    'license.item7':  'Sie m\u00f6chten dieses Tool f\u00fcr Ihr eigenes Unternehmen oder Ihre Website lizenzieren oder einbinden? Kontaktieren Sie uns unter <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a>.',

    // Impressum & Datenschutz
    '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.sectionPrivacy': 'Datenschutzerkl\u00e4rung',
    '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>.',

    // 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',

    // 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',

    // Alerts
    '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 Spostamento',
    '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':    'Trasformazione',
    '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':              'Sfocatura Cucitura \u24d8',
    'tooltips.seamBlend':            'Ammorbidisce la cucitura netta dove le facce di proiezione si incontrano. Efficace per le modalità Cubica e Cilindrica.',
    'labels.transitionSmoothing':    'Sfocatura Transizione \u24d8',
    'tooltips.transitionSmoothing':  'Larghezza della zona di miscelazione vicino ai bordi della cucitura. Valori bassi mantengono transizioni strette alla cucitura; valori alti sfocano una banda più ampia.',
    'labels.textureSmoothing':       'Sfocatura Texture \u24d8',
    'tooltips.textureSmoothing':     'Applica una sfocatura gaussiana alla mappa di spostamento. Valori alti producono dettagli superficiali più morbidi e graduali. 0 = spento.',
    'labels.capAngle':               'Angolo Calotta \u24d8',
    'tooltips.capAngle':             'Angolo (in gradi) dalla verticale al quale interviene la proiezione inferiore/superiore della calotta. Valori bassi limitano la proiezione a facce quasi piane.',

    // Mask angles section
    'sections.maskAngles':           'Angoli di Maschera \u24d8',
    'tooltips.maskAngles':           '0° = nessuna maschera. Le superfici entro questo angolo dall\'orizzontale non saranno texturizzate.',
    'labels.bottomFaces':            'Facce inferiori',
    'tooltips.bottomFaces':          'Disattiva texturizzazione su superfici rivolte verso il basso entro questo angolo dall\'orizzontale',
    'labels.topFaces':               'Facce superiori',
    'tooltips.topFaces':             'Disattiva texturizzazione su superfici rivolte verso l\'alto entro questo angolo dall\'orizzontale',

    // Surface masking section
    'sections.surfaceMasking':       'Mascheramento Superficie \u24d8',
    'sections.surfaceSelection':     'Selezione Superficie',
    'tooltips.surfaceMasking':       'Maschera superfici per controllare quali aree ricevono lo spostamento.',
    'tooltips.surfaceSelection':     'Le superfici selezionate appaiono verdi e saranno le uniche a ricevere lo spostamento durante l\'esportazione.',
    'excl.modeExclude':              'Escludi',
    'excl.modeExcludeTitle':         'Modalità di esclusione: le superfici dipinte non riceveranno lo spostamento',
    'excl.modeIncludeOnly':          'Includi Solo',
    'excl.modeIncludeOnlyTitle':     'Modalità di inclusione: solo le superfici dipinte riceveranno lo spostamento',
    'excl.toolBrush':                'Pennello',
    'excl.toolBrushTitle':           'Pennello: dipingi i triangoli da escludere',
    'excl.toolFill':                 'Riempi',
    'excl.toolFillTitle':            'Riempimento: 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 diedrico massimo tra triangoli adiacenti che il riempimento può attraversare',
    'ui.clearAll':                   'Pulisci Tutto',
    'excl.initExcluded':             '0 facce mascherate',
    'excl.faceExcluded':             '{n} faccia mascherata',
    'excl.facesExcluded':            '{n} facce mascherate',
    'excl.faceSelected':             '{n} faccia selezionata',
    'excl.facesSelected':            '{n} facce selezionate',
    'excl.hintExclude':              'Le superfici mascherate appaiono arancioni e non riceveranno lo spostamento durante l\'esportazione.',
    'excl.hintInclude':              'Le superfici selezionate appaiono verdi e saranno le uniche a ricevere lo spostamento durante l\'esportazione.',

    // Precision masking
    'precision.label':               'Precisione (Beta) \u24d8',
    'precision.labelTitle':          'Suddividi la mesh in background per consentire al pennello di selezionare in modo più preciso',
    'precision.outdated':            '\u26a0 Obsoleto',
    'precision.refreshTitle':        'Ri-suddividi la mesh per adattarla alla dimensione attuale del pennello',
    'precision.triCount':            '{n} \u25b3',
    'precision.refining':            'Rifinitura in corso\u2026',
    'precision.warningBody':         'Stimati circa {n} triangoli. Questo potrebbe rallentare il tuo browser. Continuare?',

    // Symmetric displacement
    'labels.symmetricDisplacement':  'Spostamento simmetrico \u24d8',
    'tooltips.symmetricDisplacement':'Se attivato, grigio 50% = nessuno spostamento; il bianco spinge fuori, il nero spinge dentro. Mantiene approssimativamente costante il volume della parte.',

    // Displacement preview
    'labels.displacementPreview':    'Anteprima 3D \u24d8',
    'tooltips.displacementPreview':  'Suddivide la mesh e sposta i vertici in tempo reale in modo che tu possa giudicare l\'effettiva profondità. Questo richiede sforzo alla GPU sui modelli complessi.',

    // Place on face
    'ui.placeOnFace':                'Poggia su Faccia',
    'ui.placeOnFaceTitle':           'Clicca una faccia per orientarla verso il basso sul piano di stampa',
    'progress.subdividingPreview':   'Preparazione anteprima\u2026',

    // Amplitude overlap warning
    'warnings.amplitudeOverlap':     '\u26a0 L\'ampiezza supera il 10% della dimensione più piccola del modello \u2014 si potrebbero verificare sovrapposizioni geometriche nell\'STL esportato.',

    // Export section
    'sections.export':               'Esporta \u24d8',
    'tooltips.export':               'Lunghezza lato minore = dettaglio dello spostamento più fine. L\'output viene poi decimato al limite dei triangoli.',
    'labels.resolution':             'Risoluzione',
    'tooltips.resolution':           'Gli spigoli più lunghi di questo valore verranno divisi durante l\'esportazione',
    'labels.outputTriangles':        'Triangoli in Uscita',
    'tooltips.outputTriangles':      'La mesh viene prima interamente suddivisa, poi decimata fino a questo conteggio',
    'warnings.safetyCapHit':         '\u26a0 Limite di sicurezza di 20M di triangoli raggiunto durante la suddivisione \u2014 il risultato potrebbe comunque essere meno dettagliato della lunghezza del lato richiesta.',
    'ui.exportStl':                  'Esporta STL',

    // Export progress stages
    'progress.subdividing':          'Suddivisione mesh\u2026',
    'progress.refining':             'Rifinitura: {cur} triangoli, spigolo più lungo {edge}',
    'progress.applyingDisplacement': 'Applicazione spostamento a {n} triangoli\u2026',
    'progress.displacingVertices':   'Spostamento vertici\u2026',
    'progress.decimatingTo':         'Semplificazione {from} \u2192 {to} triangoli\u2026',
    'progress.decimating':           'Semplificazione: {cur} \u2192 {to} triangoli',
    'progress.writingStl':           'Scrittura STL in corso\u2026',
    'progress.done':                 'Finito!',
    'progress.processing':           'Elaborazione in corso\u2026',

    // License popup
    'license.btn':    'Licenza & Termini',
    'license.title':  'Licenza & Termini',
    'license.item1':  'Uso gratuito per qualsiasi scopo, incluso il <strong>lavoro commerciale</strong> (es. testurizzazione di STL per clienti o prodotti).',
    'license.item2':  'L\'attribuzione è <strong>apprezzata</strong> ma <strong>non essenziale</strong> quando si usa questo strumento.',
    'license.item3':  'Vuoi supportare questo strumento? Fai shopping su <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener">CNCKitchen.STORE</a> o fai una donazione via <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>nessuna garanzia</strong> di alcun tipo. Usate a proprio rischio.',
    'license.item5':  '<strong>Nessun tipo di supporto</strong>. L\'autore non è in alcun modo obbligato a correggere bug, rispondere a domande o aggiornare questo strumento. Detto ciò, le segnalazioni di bug e le richieste di nuove funzionalità sono sempre ben accette a <a href="mailto:texturizer@cnckitchen.com">texturizer@cnckitchen.com</a>.',
    'license.item6':  'L\'autore non è <strong>responsabile</strong> per eventuali danni, perdite di dati o problemi derivanti dall\'utilizzo dello strumento.',
    'license.item7':  'Vuoi licenziare o incorporare lo strumento nel tuo business o sito? Contattateci all\'indirizzo <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a>.',

    // Imprint & Privacy
    'imprint.btn':            'Note Legali & Privacy',
    'imprint.title':          'Note Legali & 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':        'Email: <a href="mailto:contact@cnckitchen.com">contact@cnckitchen.com</a><br>Telefono: +49 175 2011824<br><em>Numero di telefono utilizzabile solo per questioni legali/aziendali \u2014 non per supporto.</em>',
    'imprint.odr':             'Piattaforma Europea per la Risoluzione delle Controversie Online (ODR): <a href="https://ec.europa.eu/consumers/odr" target="_blank" rel="noopener">https://ec.europa.eu/consumers/odr</a>',
    'imprint.sectionPrivacy': 'Informativa sulla Privacy (Datenschutzerkl\u00e4rung)',
    'imprint.privacyIntro':   '<strong>Titolare responsabile</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). Durante la navigazione, GitHub potrebbe registrare il tuo indirizzo IP nei log. Base legale: Art. 6(1)(f) DSGVO (interesse legittimo di offrire un 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 utente (lingua, tema) nel <strong>localStorage</strong> del browser locale. I dati non lasciano mai il dispositivo e mai saranno trasmessi ai server.',
    'imprint.privacyNoCookies':'Questo sito <strong>non</strong> utilizza cookie, analytics e/o tecnologie di tracciamento.',
    'imprint.privacyExternal':'Questo sito include collegamenti a siti esterni (es. CNCKitchen.STORE, PayPal). Per le relative politiche sulla privacy si declina da ogni responsabilità.',
    'imprint.privacyRights':  'In base al GDPR, lei possiede <strong>accesso, rettifica, cancellazione, limitazione del trattamento, portabilità dei dati</strong> e diritto di <strong>proporre un reclamo formale</strong> verso un\'autorità garante.',

    // Sponsor modal
    'sponsor.title':           'Grazie per l\'uso di BumpMesh by CNC Kitchen!',
    'sponsor.body':            'Questo strumento è <strong>completamente gratuito</strong> da parte di CNC Kitchen.<br>Mentre l\'STL si elabora aspetta, dai un\'occhiata allo store, questo ci aiuta a sviluppare grandi cose per te!',
    'sponsor.visitStore':      '\uD83D\uDED2 Visita lo STORE di CNCKitchen',
    'sponsor.donate':          '\uD83D\uDC99 Fai una donazione via PayPal',
    'sponsor.dontShow':        "Non mostrare più questo messaggio",
    'sponsor.closeAndContinue':'Chiudi &amp; Continua',

    // Store CTA
    'cta.store':            'Vuoi sostenere lo strumento? Puoi fare shopping in <a href="https://geni.us/CNCStoreTexture" target="_blank" rel="noopener noreferrer">CNCKitchen.STORE</a> o potresti aiutarci donando in <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 ─────────────────────────────────────────────────────────────────────

let _currentLang = 'en';

// ── Core API ──────────────────────────────────────────────────────────────────

/**
 * Look up a translation key in the current language, falling back to English.
 * Replace {placeholder} tokens with values from `params`.
 */
export function t(key, params = {}) {
  const lang = TRANSLATIONS[_currentLang] || TRANSLATIONS.en;
  let str = lang[key] ?? TRANSLATIONS.en[key] ?? key;
  for (const [k, v] of Object.entries(params)) {
    str = str.replaceAll(`{${k}}`, v);
  }
  return str;
}

export function getLang() {
  return _currentLang;
}

export function setLang(lang) {
  if (!TRANSLATIONS[lang]) return;
  _currentLang = lang;
  localStorage.setItem('stlt-lang', lang);
  document.documentElement.setAttribute('data-lang', lang);
  document.documentElement.setAttribute('lang', lang);
  applyTranslations();
}

/**
 * Walk the DOM and apply translations to elements carrying data-i18n* attributes.
 */
export function applyTranslations() {
  // textContent
  document.querySelectorAll('[data-i18n]').forEach(el => {
    el.textContent = t(el.dataset.i18n);
  });
  // innerHTML (safe: all values are hardcoded in this file, not user input)
  document.querySelectorAll('[data-i18n-html]').forEach(el => {
    el.innerHTML = t(el.dataset.i18nHtml);
  });
  // title attribute
  document.querySelectorAll('[data-i18n-title]').forEach(el => {
    el.title = t(el.dataset.i18nTitle);
  });
  // aria-label attribute
  document.querySelectorAll('[data-i18n-aria-label]').forEach(el => {
    el.setAttribute('aria-label', t(el.dataset.i18nAriaLabel));
  });
  // <option> elements (textContent doesn't work via data-i18n on options in some browsers)
  document.querySelectorAll('option[data-i18n-opt]').forEach(opt => {
    opt.textContent = t(opt.dataset.i18nOpt);
  });
}

/**
 * Detect language from localStorage or browser preference and apply.
 * Call once on startup before first render.
 */
export function initLang() {
  const saved = localStorage.getItem('stlt-lang');
  if (saved && TRANSLATIONS[saved]) {
    _currentLang = saved;
  } 
  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);
  applyTranslations();
}