feat: FASE 2 - Client Base (layout, login, navbar, tema, i18n)

Implementazione completa del frontend Flask:
- Layout base.html con TailwindCSS CDN, dark/light theme, flash messages
- Navbar responsive role-based (Maker, MeasurementTec, Metrologist, Admin)
- Login page professionale con form + API integration
- Profilo utente: nome, lingua, tema, badge ruoli
- Sistema tema dark/light: CSS variables + Alpine.js store + localStorage
- i18n completo IT/EN: Flask-Babel (.po) + alpinejs-i18n (JSON)
- API Client riscritto: error handling normalizzato, no crash su 4xx/5xx
- CSRF protection con Flask-WTF su tutti i form
- Logo aziendale dinamico da system_settings
- Asset SVG: tmflow-logo.svg + tmflow-icon.svg (favicon)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/app.py

@@ -3,6 +3,7 @@ import os
 
 from flask import Flask, redirect, url_for, session, request
 from flask_babel import Babel
+from flask_wtf.csrf import CSRFProtect
 
 from config import Config
 
@@ -23,6 +24,9 @@ def create_app() -> Flask:
     app = Flask(__name__)
     app.config.from_object(Config)
 
+    # Initialize CSRF protection
+    csrf = CSRFProtect(app)
+
     # Initialize Flask-Babel
     Babel(app, locale_selector=get_locale)
 
@@ -44,6 +48,13 @@ def create_app() -> Flask:
             return redirect(url_for("measure.select_recipe"))
         return redirect(url_for("auth.login"))
 
+    @app.route("/set-language/<lang>")
+    def set_language(lang):
+        """Set user's preferred language and store in session."""
+        if lang in Config.LANGUAGES:
+            session["language"] = lang
+        return redirect(request.referrer or url_for("auth.login"))
+
     @app.context_processor
     def inject_globals():
         """Inject global variables into all templates."""
@@ -52,6 +63,7 @@ def create_app() -> Flask:
             "current_theme": session.get("theme", "light"),
             "current_language": get_locale(),
             "languages": Config.LANGUAGES,
+            "company_logo": session.get("company_logo"),
         }
 
     return app

client/blueprints/auth.py

@@ -1,31 +1,141 @@
 """Authentication blueprint - login, logout, profile."""
-from flask import Blueprint, render_template, request, redirect, url_for, session, flash
+from functools import wraps
 
-auth_bp = Blueprint("auth", __name__)
+from flask import Blueprint, flash, redirect, render_template, request, session, url_for
+from flask_babel import gettext as _
+
+from services.api_client import api_client
+
+auth_bp = Blueprint("auth", __name__, url_prefix="/auth")
+
+
+def login_required(f):
+    """Decorator to require login for protected routes."""
+    @wraps(f)
+    def decorated(*args, **kwargs):
+        if not session.get("api_key"):
+            flash(_("Effettua il login per continuare"), "warning")
+            return redirect(url_for("auth.login"))
+        return f(*args, **kwargs)
+    return decorated
 
 
 @auth_bp.route("/login", methods=["GET", "POST"])
 def login():
-    """Login page."""
+    """Login page and form handler."""
+    # Se già loggato, redirect a home
+    if session.get("api_key"):
+        try:
+            return redirect(url_for("measure.select_recipe"))
+        except Exception:
+            return redirect(url_for("auth.profile"))
+
     if request.method == "POST":
-        # TODO: Implement API call to server /api/auth/login
-        pass
+        username = request.form.get("username", "").strip()
+        password = request.form.get("password", "")
+
+        if not username or not password:
+            flash(_("Inserisci username e password"), "error")
+            return render_template("auth/login.html")
+
+        try:
+            response = api_client.post("/api/auth/login", data={"username": username, "password": password})
+
+            if response.get("error"):
+                flash(response.get("detail", _("Credenziali non valide")), "error")
+                return render_template("auth/login.html")
+
+            # Salva in sessione
+            session["api_key"] = response["api_key"]
+            session["user"] = response["user"]
+            session["user_id"] = response["user"]["id"]
+
+            # Applica preferenze utente
+            user = response["user"]
+            if user.get("language_pref"):
+                session["language"] = user["language_pref"]
+            if user.get("theme_pref"):
+                session["theme"] = user["theme_pref"]
+
+            # Carica logo aziendale dalle impostazioni di sistema
+            settings_resp = api_client.get("/api/settings")
+            if not settings_resp.get("error"):
+                logo_path = settings_resp.get("company_logo_path")
+                if logo_path:
+                    session["company_logo"] = logo_path
+
+            flash(_("Benvenuto, %(name)s!", name=user.get("display_name", username)), "success")
+
+            # Redirect dopo login
+            try:
+                return redirect(url_for("measure.select_recipe"))
+            except Exception:
+                return redirect(url_for("auth.profile"))
+
+        except Exception as e:
+            flash(_("Errore di connessione al server: %(error)s", error=str(e)), "error")
+            return render_template("auth/login.html")
+
     return render_template("auth/login.html")
 
 
-@auth_bp.route("/logout")
+@auth_bp.route("/logout", methods=["GET", "POST"])
 def logout():
-    """Logout - clear session."""
+    """Clear session and redirect to login."""
+    # Invalida il token sul server
+    if session.get("api_key"):
+        try:
+            api_client.post("/api/auth/logout")
+        except Exception:
+            pass  # Ignora errori durante logout
+
     session.clear()
+    flash(_("Logout effettuato"), "info")
     return redirect(url_for("auth.login"))
 
 
 @auth_bp.route("/profile", methods=["GET", "POST"])
+@login_required
 def profile():
-    """User profile - change display name, language, theme."""
-    if "user" not in session:
-        return redirect(url_for("auth.login"))
+    """User profile page - change display name, language, theme."""
     if request.method == "POST":
-        # TODO: Implement API call to server /api/auth/me PUT
-        pass
-    return render_template("auth/profile.html")
+        display_name = request.form.get("display_name", "").strip()
+        language_pref = request.form.get("language_pref", "").strip()
+        theme_pref = request.form.get("theme_pref", "").strip()
+
+        try:
+            data = {}
+            if display_name:
+                data["display_name"] = display_name
+            if language_pref:
+                data["language_pref"] = language_pref
+            if theme_pref:
+                data["theme_pref"] = theme_pref
+
+            response = api_client.put("/api/auth/me", data=data)
+
+            if response.get("error"):
+                flash(response.get("detail", _("Errore durante l'aggiornamento del profilo")), "error")
+            else:
+                # Aggiorna sessione
+                session["user"] = response
+                if language_pref:
+                    session["language"] = language_pref
+                if theme_pref:
+                    session["theme"] = theme_pref
+
+                flash(_("Profilo aggiornato con successo"), "success")
+                return redirect(url_for("auth.profile"))
+
+        except Exception as e:
+            flash(_("Errore di connessione al server: %(error)s", error=str(e)), "error")
+
+    # GET - carica dati profilo
+    user_data = api_client.get("/api/auth/me")
+    if user_data.get("error"):
+        flash(_("Errore nel caricamento del profilo: %(error)s", error=user_data.get("detail", "")), "error")
+        user_data = session.get("user", {})
+    else:
+        session["user"] = user_data
+
+    return render_template("auth/profile.html", user=user_data)

client/requirements.txt

@@ -1,6 +1,7 @@
 # Flask
 flask>=3.0.0
 flask-babel>=4.0.0
+flask-wtf>=1.2.0
 
 # HTTP Client (to call FastAPI server)
 requests>=2.31.0

client/services/api_client.py

@@ -23,19 +23,52 @@ class APIClient:
             headers["X-API-Key"] = api_key
         return headers
 
+    def _handle_response(self, response: requests.Response) -> dict[str, Any]:
+        """Parse response and return normalized dict.
+
+        Returns:
+            - If 2xx and not 204: response JSON
+            - If 204 No Content: empty dict
+            - If 4xx/5xx: {"error": True, "status_code": ..., "detail": "..."}
+        """
+        if response.ok:
+            if response.status_code == 204:
+                return {}
+            return response.json()
+
+        # Non-OK response (4xx/5xx)
+        try:
+            error_body = response.json()
+            detail = error_body.get("detail", str(error_body))
+        except Exception:
+            detail = response.text or f"HTTP {response.status_code}"
+
+        return {
+            "error": True,
+            "status_code": response.status_code,
+            "detail": detail
+        }
+
     def get(self, endpoint: str, params: dict | None = None) -> dict[str, Any]:
         """GET request to API server."""
+        try:
             response = requests.get(
                 f"{self.base_url}{endpoint}",
                 headers=self._headers,
                 params=params,
                 timeout=self.timeout,
             )
-        response.raise_for_status()
-        return response.json()
+            return self._handle_response(response)
+        except (requests.ConnectionError, requests.Timeout) as e:
+            return {
+                "error": True,
+                "status_code": 0,
+                "detail": f"Errore di connessione al server: {str(e)}"
+            }
 
     def post(self, endpoint: str, data: dict | None = None, files: dict | None = None) -> dict[str, Any]:
         """POST request to API server."""
+        try:
             if files:
                 headers = {"X-API-Key": session.get("api_key", "")}
                 response = requests.post(
@@ -52,29 +85,46 @@ class APIClient:
                     json=data,
                     timeout=self.timeout,
                 )
-        response.raise_for_status()
-        return response.json()
+            return self._handle_response(response)
+        except (requests.ConnectionError, requests.Timeout) as e:
+            return {
+                "error": True,
+                "status_code": 0,
+                "detail": f"Errore di connessione al server: {str(e)}"
+            }
 
     def put(self, endpoint: str, data: dict | None = None) -> dict[str, Any]:
         """PUT request to API server."""
+        try:
             response = requests.put(
                 f"{self.base_url}{endpoint}",
                 headers=self._headers,
                 json=data,
                 timeout=self.timeout,
             )
-        response.raise_for_status()
-        return response.json()
+            return self._handle_response(response)
+        except (requests.ConnectionError, requests.Timeout) as e:
+            return {
+                "error": True,
+                "status_code": 0,
+                "detail": f"Errore di connessione al server: {str(e)}"
+            }
 
     def delete(self, endpoint: str) -> dict[str, Any]:
         """DELETE request to API server."""
+        try:
             response = requests.delete(
                 f"{self.base_url}{endpoint}",
                 headers=self._headers,
                 timeout=self.timeout,
             )
-        response.raise_for_status()
-        return response.json()
+            return self._handle_response(response)
+        except (requests.ConnectionError, requests.Timeout) as e:
+            return {
+                "error": True,
+                "status_code": 0,
+                "detail": f"Errore di connessione al server: {str(e)}"
+            }
 
 
 api_client = APIClient()

client/static/css/themes.css

@@ -0,0 +1,374 @@
+/* ============================================================
+   TieMeasureFlow - Theme System
+   CSS Custom Properties for Light / Dark mode
+   ============================================================ */
+
+/* ---- Light Theme (Default) ---- */
+:root {
+  --color-primary: #2563EB;
+  --color-primary-dark: #1E40AF;
+  --color-primary-light: #3B82F6;
+  --color-secondary: #64748B;
+  --color-accent: #1E40AF;
+
+  --color-pass: #059669;
+  --color-warning: #D97706;
+  --color-fail: #DC2626;
+
+  --bg-primary: #F8FAFC;
+  --bg-secondary: #F1F5F9;
+  --bg-card: #FFFFFF;
+  --bg-card-hover: #F8FAFC;
+
+  --text-primary: #0F172A;
+  --text-secondary: #475569;
+  --text-muted: #94A3B8;
+
+  --border-color: #E2E8F0;
+  --border-focus: #2563EB;
+
+  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
+  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
+  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
+
+  --scrollbar-track: #F1F5F9;
+  --scrollbar-thumb: #CBD5E1;
+  --scrollbar-thumb-hover: #94A3B8;
+}
+
+/* ---- Dark Theme ---- */
+.dark {
+  --bg-primary: #0F172A;
+  --bg-secondary: #1E293B;
+  --bg-card: #334155;
+  --bg-card-hover: #3B4A63;
+
+  --text-primary: #F1F5F9;
+  --text-secondary: #94A3B8;
+  --text-muted: #64748B;
+
+  --border-color: #475569;
+  --border-focus: #3B82F6;
+
+  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
+  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
+  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
+
+  --scrollbar-track: #1E293B;
+  --scrollbar-thumb: #475569;
+  --scrollbar-thumb-hover: #64748B;
+}
+
+
+/* ============================================================
+   Global Transitions
+   ============================================================ */
+
+*,
+*::before,
+*::after {
+  transition-property: background-color, border-color, color, box-shadow;
+  transition-duration: 0s;
+}
+
+/* Enable smooth transitions only after page load (avoid flash) */
+html.theme-transitions *,
+html.theme-transitions *::before,
+html.theme-transitions *::after {
+  transition-duration: 0.3s;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+
+/* ============================================================
+   Focus Ring
+   ============================================================ */
+
+*:focus-visible {
+  outline: 2px solid var(--border-focus);
+  outline-offset: 2px;
+  border-radius: 4px;
+}
+
+input:focus-visible,
+select:focus-visible,
+textarea:focus-visible {
+  outline: none;
+  box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px var(--border-focus);
+}
+
+
+/* ============================================================
+   Custom Scrollbar
+   ============================================================ */
+
+/* Webkit (Chrome, Safari, Edge) */
+::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+
+::-webkit-scrollbar-track {
+  background: var(--scrollbar-track);
+}
+
+::-webkit-scrollbar-thumb {
+  background: var(--scrollbar-thumb);
+  border-radius: 4px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: var(--scrollbar-thumb-hover);
+}
+
+/* Firefox */
+* {
+  scrollbar-width: thin;
+  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
+}
+
+
+/* ============================================================
+   Utility: Card
+   ============================================================ */
+
+.tmf-card {
+  background: var(--bg-card);
+  border: 1px solid var(--border-color);
+  border-radius: 0.75rem;
+  box-shadow: var(--shadow-sm);
+  transition: box-shadow 0.2s ease, border-color 0.2s ease;
+}
+
+.tmf-card:hover {
+  box-shadow: var(--shadow-md);
+}
+
+.tmf-card-header {
+  padding: 1rem 1.25rem;
+  border-bottom: 1px solid var(--border-color);
+  font-weight: 600;
+  font-size: 0.875rem;
+  color: var(--text-primary);
+}
+
+.tmf-card-body {
+  padding: 1.25rem;
+}
+
+.tmf-card-footer {
+  padding: 0.75rem 1.25rem;
+  border-top: 1px solid var(--border-color);
+  background: var(--bg-secondary);
+  border-radius: 0 0 0.75rem 0.75rem;
+}
+
+
+/* ============================================================
+   Utility: Badges (Pass / Warning / Fail)
+   ============================================================ */
+
+.badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.125rem 0.625rem;
+  font-size: 0.75rem;
+  font-weight: 600;
+  border-radius: 9999px;
+  line-height: 1.5;
+  white-space: nowrap;
+}
+
+.badge-pass {
+  background: rgba(5, 150, 105, 0.1);
+  color: #059669;
+  border: 1px solid rgba(5, 150, 105, 0.25);
+}
+
+.dark .badge-pass {
+  background: rgba(5, 150, 105, 0.15);
+  color: #34D399;
+  border-color: rgba(5, 150, 105, 0.3);
+}
+
+.badge-warning {
+  background: rgba(217, 119, 6, 0.1);
+  color: #D97706;
+  border: 1px solid rgba(217, 119, 6, 0.25);
+}
+
+.dark .badge-warning {
+  background: rgba(217, 119, 6, 0.15);
+  color: #FBBF24;
+  border-color: rgba(217, 119, 6, 0.3);
+}
+
+.badge-fail {
+  background: rgba(220, 38, 38, 0.1);
+  color: #DC2626;
+  border: 1px solid rgba(220, 38, 38, 0.25);
+}
+
+.dark .badge-fail {
+  background: rgba(220, 38, 38, 0.15);
+  color: #F87171;
+  border-color: rgba(220, 38, 38, 0.3);
+}
+
+.badge-neutral {
+  background: var(--bg-secondary);
+  color: var(--text-secondary);
+  border: 1px solid var(--border-color);
+}
+
+
+/* ============================================================
+   Utility: Buttons
+   ============================================================ */
+
+.btn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.5rem;
+  padding: 0.5rem 1rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+  border-radius: 0.5rem;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  border: 1px solid transparent;
+}
+
+.btn:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+.btn-primary {
+  background: var(--color-primary);
+  color: #FFFFFF;
+  border-color: var(--color-primary);
+}
+
+.btn-primary:hover:not(:disabled) {
+  background: var(--color-primary-dark);
+  border-color: var(--color-primary-dark);
+}
+
+.btn-secondary {
+  background: transparent;
+  color: var(--text-secondary);
+  border-color: var(--border-color);
+}
+
+.btn-secondary:hover:not(:disabled) {
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  border-color: var(--text-secondary);
+}
+
+.btn-danger {
+  background: var(--color-fail);
+  color: #FFFFFF;
+  border-color: var(--color-fail);
+}
+
+.btn-danger:hover:not(:disabled) {
+  background: #B91C1C;
+  border-color: #B91C1C;
+}
+
+
+/* ============================================================
+   Utility: Form Inputs
+   ============================================================ */
+
+.tmf-input {
+  width: 100%;
+  padding: 0.5rem 0.75rem;
+  font-size: 0.875rem;
+  line-height: 1.5;
+  color: var(--text-primary);
+  background: var(--bg-card);
+  border: 1px solid var(--border-color);
+  border-radius: 0.5rem;
+  transition: border-color 0.2s ease, box-shadow 0.2s ease;
+}
+
+.tmf-input::placeholder {
+  color: var(--text-muted);
+}
+
+.tmf-input:focus {
+  outline: none;
+  border-color: var(--border-focus);
+  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
+}
+
+.dark .tmf-input:focus {
+  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
+}
+
+.tmf-label {
+  display: block;
+  font-size: 0.8125rem;
+  font-weight: 500;
+  color: var(--text-secondary);
+  margin-bottom: 0.375rem;
+}
+
+
+/* ============================================================
+   Utility: Measurement Value Display
+   ============================================================ */
+
+.measure-value {
+  font-family: 'JetBrains Mono', ui-monospace, monospace;
+  font-weight: 500;
+  letter-spacing: -0.025em;
+  font-variant-numeric: tabular-nums;
+}
+
+
+/* ============================================================
+   Utility: Table
+   ============================================================ */
+
+.tmf-table {
+  width: 100%;
+  font-size: 0.875rem;
+  border-collapse: collapse;
+}
+
+.tmf-table th {
+  padding: 0.625rem 1rem;
+  text-align: left;
+  font-weight: 600;
+  font-size: 0.75rem;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: var(--text-secondary);
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border-color);
+}
+
+.tmf-table td {
+  padding: 0.625rem 1rem;
+  color: var(--text-primary);
+  border-bottom: 1px solid var(--border-color);
+}
+
+.tmf-table tbody tr:hover {
+  background: var(--bg-card-hover);
+}
+
+
+/* ============================================================
+   Alpine.js x-cloak (hide until Alpine loads)
+   ============================================================ */
+
+[x-cloak] {
+  display: none !important;
+}

client/static/img/tmflow-icon.svg

@@ -0,0 +1,27 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" fill="none">
+  <!-- Stylized Caliper Icon for Favicon -->
+
+  <!-- Caliper outer frame -->
+  <rect x="2" y="3" width="5" height="26" rx="1.5" fill="#2563EB"/>
+  <rect x="2" y="3" width="19" height="5" rx="1.5" fill="#2563EB"/>
+  <rect x="2" y="24" width="19" height="5" rx="1.5" fill="#2563EB"/>
+
+  <!-- Sliding jaw -->
+  <rect x="12" y="8" width="4.5" height="6.5" rx="1" fill="#1E40AF"/>
+  <rect x="12" y="17.5" width="4.5" height="6.5" rx="1" fill="#1E40AF"/>
+
+  <!-- Depth rod -->
+  <rect x="4" y="14" width="12" height="3.5" rx="1" fill="#3B82F6" opacity="0.55"/>
+
+  <!-- Scale markings -->
+  <rect x="8" y="5" width="1" height="2.5" rx="0.5" fill="#FFFFFF" opacity="0.65"/>
+  <rect x="11" y="5" width="1" height="2.5" rx="0.5" fill="#FFFFFF" opacity="0.65"/>
+  <rect x="14" y="5" width="1" height="2.5" rx="0.5" fill="#FFFFFF" opacity="0.65"/>
+  <rect x="17" y="5" width="1" height="2.5" rx="0.5" fill="#FFFFFF" opacity="0.65"/>
+
+  <!-- Flow arrow -->
+  <path d="M22 16 C25 16, 26.5 11, 29 11"
+        stroke="#3B82F6" stroke-width="2.2" stroke-linecap="round" fill="none"/>
+  <path d="M27 8.5 L29.5 11 L27 13.5"
+        stroke="#3B82F6" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" fill="none"/>
+</svg>

client/static/img/tmflow-logo.svg

@@ -0,0 +1,41 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 220 44" fill="none">
+  <!-- Stylized Caliper Icon -->
+  <g transform="translate(2, 2)">
+    <!-- Caliper outer frame -->
+    <rect x="0" y="4" width="6" height="32" rx="1.5" fill="#2563EB"/>
+    <rect x="0" y="4" width="24" height="6" rx="1.5" fill="#2563EB"/>
+    <rect x="0" y="30" width="24" height="6" rx="1.5" fill="#2563EB"/>
+
+    <!-- Caliper sliding jaw -->
+    <rect x="14" y="10" width="5" height="8" rx="1" fill="#1E40AF"/>
+    <rect x="14" y="22" width="5" height="8" rx="1" fill="#1E40AF"/>
+
+    <!-- Caliper depth rod -->
+    <rect x="2" y="18" width="16" height="4" rx="1" fill="#3B82F6" opacity="0.6"/>
+
+    <!-- Scale markings -->
+    <rect x="7" y="7" width="1" height="3" rx="0.5" fill="#FFFFFF" opacity="0.7"/>
+    <rect x="10" y="7" width="1" height="3" rx="0.5" fill="#FFFFFF" opacity="0.7"/>
+    <rect x="13" y="7" width="1" height="3" rx="0.5" fill="#FFFFFF" opacity="0.7"/>
+    <rect x="16" y="7" width="1" height="3" rx="0.5" fill="#FFFFFF" opacity="0.7"/>
+    <rect x="19" y="7" width="1" height="3" rx="0.5" fill="#FFFFFF" opacity="0.7"/>
+
+    <!-- Flow arrow (smooth curve) -->
+    <path d="M26 20 C30 20, 32 14, 36 14 C40 14, 40 20, 36 20"
+          stroke="#2563EB" stroke-width="2.5" stroke-linecap="round" fill="none"/>
+    <path d="M34 17 L37 20 L34 23" stroke="#2563EB" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" fill="none"/>
+  </g>
+
+  <!-- Text: TieMeasureFlow -->
+  <g transform="translate(48, 0)">
+    <!-- "Tie" in bold primary -->
+    <text x="0" y="28" font-family="Inter, system-ui, sans-serif" font-size="20" font-weight="700" fill="#2563EB"
+          letter-spacing="-0.5">Tie</text>
+    <!-- "Measure" in medium dark -->
+    <text x="32" y="28" font-family="Inter, system-ui, sans-serif" font-size="20" font-weight="500" fill="#1E40AF"
+          letter-spacing="-0.5">Measure</text>
+    <!-- "Flow" in bold primary -->
+    <text x="120" y="28" font-family="Inter, system-ui, sans-serif" font-size="20" font-weight="700" fill="#2563EB"
+          letter-spacing="-0.5">Flow</text>
+  </g>
+</svg>

client/static/js/alpine-init.js

@@ -0,0 +1,126 @@
+/**
+ * TieMeasureFlow - Alpine.js Theme Initialization
+ *
+ * This script MUST load before Alpine.js (which uses defer).
+ * It reads the saved theme from localStorage or the system preference,
+ * applies the 'dark' class to <html> immediately (no flash), and
+ * registers an Alpine.store('theme') for reactive toggling.
+ */
+
+(function () {
+  'use strict';
+
+  // ---- Immediate theme application (before paint) ----
+
+  var STORAGE_KEY = 'tmf-theme';
+
+  /**
+   * Resolve the initial dark-mode state.
+   * Priority: localStorage > system preference > light (default).
+   */
+  function getInitialDark() {
+    var stored = null;
+    try {
+      stored = localStorage.getItem(STORAGE_KEY);
+    } catch (_) {
+      // localStorage may be unavailable (private browsing, etc.)
+    }
+
+    if (stored === 'dark') return true;
+    if (stored === 'light') return false;
+
+    // Fall back to OS preference
+    if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
+      return true;
+    }
+
+    return false;
+  }
+
+  var isDark = getInitialDark();
+
+  // Apply immediately to prevent flash of wrong theme
+  if (isDark) {
+    document.documentElement.classList.add('dark');
+  } else {
+    document.documentElement.classList.remove('dark');
+  }
+
+  // ---- Enable smooth transitions after first paint ----
+
+  // Use requestAnimationFrame to wait one frame, then enable transitions
+  // so the initial theme application does not animate.
+  if (typeof requestAnimationFrame === 'function') {
+    requestAnimationFrame(function () {
+      requestAnimationFrame(function () {
+        document.documentElement.classList.add('theme-transitions');
+      });
+    });
+  }
+
+  // ---- Alpine.js Store Registration ----
+
+  // Alpine.store is registered via the alpine:init event, which fires
+  // when Alpine begins initialization but before it processes x-data.
+
+  document.addEventListener('alpine:init', function () {
+    Alpine.store('theme', {
+      dark: isDark,
+
+      toggle: function () {
+        this.dark = !this.dark;
+        this._apply();
+      },
+
+      set: function (dark) {
+        this.dark = dark;
+        this._apply();
+      },
+
+      _apply: function () {
+        if (this.dark) {
+          document.documentElement.classList.add('dark');
+        } else {
+          document.documentElement.classList.remove('dark');
+        }
+        try {
+          localStorage.setItem(STORAGE_KEY, this.dark ? 'dark' : 'light');
+        } catch (_) {
+          // Silently ignore storage errors
+        }
+      }
+    });
+  });
+
+  // ---- Listen for system preference changes ----
+
+  if (window.matchMedia) {
+    try {
+      var mq = window.matchMedia('(prefers-color-scheme: dark)');
+      mq.addEventListener('change', function (e) {
+        // Only auto-switch if the user hasn't manually set a preference
+        var stored = null;
+        try {
+          stored = localStorage.getItem(STORAGE_KEY);
+        } catch (_) {}
+
+        if (!stored) {
+          var newDark = e.matches;
+          if (typeof Alpine !== 'undefined' && Alpine.store('theme')) {
+            Alpine.store('theme').set(newDark);
+          } else {
+            // Alpine not loaded yet, apply directly
+            if (newDark) {
+              document.documentElement.classList.add('dark');
+            } else {
+              document.documentElement.classList.remove('dark');
+            }
+          }
+        }
+      });
+    } catch (_) {
+      // Older browsers may not support addEventListener on matchMedia
+    }
+  }
+
+})();

client/static/js/locales/en.json

@@ -0,0 +1,76 @@
+{
+  "numpad": {
+    "title": "Numeric Keypad",
+    "clear": "Clear",
+    "submit": "Confirm",
+    "decimal": "Decimal",
+    "close": "Close"
+  },
+  "measurement": {
+    "pass": "Pass",
+    "warning": "Warning",
+    "fail": "Fail",
+    "value": "Value",
+    "next": "Next measurement"
+  },
+  "common": {
+    "loading": "Loading...",
+    "save": "Save",
+    "cancel": "Cancel",
+    "confirm": "Confirm",
+    "delete": "Delete",
+    "edit": "Edit",
+    "search": "Search...",
+    "noResults": "No results",
+    "close": "Close",
+    "error": "Error",
+    "success": "Success",
+    "warning": "Warning",
+    "info": "Info",
+    "page": "Page",
+    "of": "of",
+    "previous": "Previous",
+    "next": "Next"
+  },
+  "theme": {
+    "light": "Light",
+    "dark": "Dark",
+    "toggle": "Toggle theme"
+  },
+  "language": {
+    "switch": "Switch language",
+    "it": "Italian",
+    "en": "English"
+  },
+  "auth": {
+    "login": "Sign in to your account",
+    "username": "Username",
+    "password": "Password",
+    "signIn": "Sign In",
+    "invalidCredentials": "Invalid credentials",
+    "enterCredentials": "Enter username and password",
+    "forgotPassword": "Forgot password? Contact administrator",
+    "welcome": "Welcome, {name}!",
+    "logoutSuccess": "Logged out successfully",
+    "loginRequired": "Please log in to continue"
+  },
+  "nav": {
+    "measurements": "Measurements",
+    "recipes": "Recipes",
+    "statistics": "Statistics",
+    "admin": "Admin",
+    "users": "Users",
+    "settings": "Settings",
+    "profile": "Profile",
+    "logout": "Logout"
+  },
+  "profile": {
+    "title": "User Profile",
+    "displayName": "Display Name",
+    "language": "Language",
+    "theme": "Theme",
+    "roles": "Roles",
+    "saveChanges": "Save Changes",
+    "updateSuccess": "Profile updated successfully"
+  }
+}

client/static/js/locales/it.json

@@ -0,0 +1,76 @@
+{
+  "numpad": {
+    "title": "Tastierino Numerico",
+    "clear": "Cancella",
+    "submit": "Conferma",
+    "decimal": "Virgola",
+    "close": "Chiudi"
+  },
+  "measurement": {
+    "pass": "Conforme",
+    "warning": "Attenzione",
+    "fail": "Non Conforme",
+    "value": "Valore",
+    "next": "Prossima misura"
+  },
+  "common": {
+    "loading": "Caricamento...",
+    "save": "Salva",
+    "cancel": "Annulla",
+    "confirm": "Conferma",
+    "delete": "Elimina",
+    "edit": "Modifica",
+    "search": "Cerca...",
+    "noResults": "Nessun risultato",
+    "close": "Chiudi",
+    "error": "Errore",
+    "success": "Successo",
+    "warning": "Attenzione",
+    "info": "Info",
+    "page": "Pagina",
+    "of": "di",
+    "previous": "Precedente",
+    "next": "Successivo"
+  },
+  "theme": {
+    "light": "Chiaro",
+    "dark": "Scuro",
+    "toggle": "Cambia tema"
+  },
+  "language": {
+    "switch": "Cambia lingua",
+    "it": "Italiano",
+    "en": "English"
+  },
+  "auth": {
+    "login": "Accedi al sistema",
+    "username": "Username",
+    "password": "Password",
+    "signIn": "Accedi",
+    "invalidCredentials": "Credenziali non valide",
+    "enterCredentials": "Inserisci username e password",
+    "forgotPassword": "Hai dimenticato la password? Contatta l'amministratore",
+    "welcome": "Benvenuto, {name}!",
+    "logoutSuccess": "Logout effettuato",
+    "loginRequired": "Effettua il login per continuare"
+  },
+  "nav": {
+    "measurements": "Misure",
+    "recipes": "Ricette",
+    "statistics": "Statistiche",
+    "admin": "Admin",
+    "users": "Utenti",
+    "settings": "Impostazioni",
+    "profile": "Profilo",
+    "logout": "Esci"
+  },
+  "profile": {
+    "title": "Profilo Utente",
+    "displayName": "Nome Visualizzato",
+    "language": "Lingua",
+    "theme": "Tema",
+    "roles": "Ruoli",
+    "saveChanges": "Salva Modifiche",
+    "updateSuccess": "Profilo aggiornato con successo"
+  }
+}

client/templates/auth/login.html

@@ -0,0 +1,95 @@
+{% extends "base.html" %}
+{% block title %}Login — TieMeasureFlow{% endblock %}
+
+{% block content %}
+<div class="min-h-screen flex items-center justify-center bg-gradient-to-br from-slate-50 to-slate-100 dark:from-slate-900 dark:to-slate-800 px-4 sm:px-6 lg:px-8">
+  <div class="max-w-md w-full space-y-8">
+    <!-- Card -->
+    <div class="bg-white dark:bg-slate-800 shadow-lg rounded-xl p-8">
+      <!-- Logo -->
+      <div class="text-center mb-8">
+        <img src="{{ url_for('static', filename='img/tmflow-logo.svg') }}"
+             alt="TieMeasureFlow Logo"
+             class="mx-auto h-16 w-auto mb-4"
+             onerror="this.style.display='none'">
+        <h2 class="text-3xl font-bold text-slate-900 dark:text-white mb-2">
+          TieMeasureFlow
+        </h2>
+        <p class="text-sm text-slate-600 dark:text-slate-400">
+          {{ _('Accedi al sistema') }}
+        </p>
+      </div>
+
+      <!-- Login Form -->
+      <form method="POST" action="{{ url_for('auth.login') }}" class="space-y-6">
+        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+        <!-- Username -->
+        <div>
+          <label for="username" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+            {{ _('Username') }}
+          </label>
+          <div class="relative">
+            <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+              <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
+              </svg>
+            </div>
+            <input type="text"
+                   id="username"
+                   name="username"
+                   required
+                   autofocus
+                   placeholder="{{ _('Username') }}"
+                   class="block w-full pl-10 pr-3 py-2.5 border border-slate-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 dark:focus:ring-primary-400 dark:focus:border-primary-400 bg-white dark:bg-slate-700 text-slate-900 dark:text-white placeholder-slate-400 dark:placeholder-slate-500 transition-colors">
+          </div>
+        </div>
+
+        <!-- Password -->
+        <div>
+          <label for="password" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+            {{ _('Password') }}
+          </label>
+          <div class="relative">
+            <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+              <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z" />
+              </svg>
+            </div>
+            <input type="password"
+                   id="password"
+                   name="password"
+                   required
+                   placeholder="{{ _('Password') }}"
+                   class="block w-full pl-10 pr-3 py-2.5 border border-slate-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 dark:focus:ring-primary-400 dark:focus:border-primary-400 bg-white dark:bg-slate-700 text-slate-900 dark:text-white placeholder-slate-400 dark:placeholder-slate-500 transition-colors">
+          </div>
+        </div>
+
+        <!-- Submit Button -->
+        <div>
+          <button type="submit"
+                  class="w-full flex justify-center py-3 px-4 border border-transparent rounded-lg shadow-sm text-sm font-semibold text-white bg-primary-600 hover:bg-primary-700 dark:bg-primary-500 dark:hover:bg-primary-600 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 transition-all duration-200">
+            <svg class="h-5 w-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 16l-4-4m0 0l4-4m-4 4h14m-5 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h7a3 3 0 013 3v1" />
+            </svg>
+            {{ _('Accedi') }}
+          </button>
+        </div>
+      </form>
+
+      <!-- Help Text -->
+      <div class="mt-6 text-center">
+        <p class="text-xs text-slate-500 dark:text-slate-400">
+          {{ _('Hai dimenticato la password?') }}
+          <br>
+          {{ _('Contatta l\'amministratore') }}
+        </p>
+      </div>
+    </div>
+
+    <!-- Footer -->
+    <div class="text-center text-xs text-slate-500 dark:text-slate-400">
+      <p>TieMeasureFlow &copy; 2025 - {{ _('Sistema di misurazione industriale') }}</p>
+    </div>
+  </div>
+</div>
+{% endblock %}

client/templates/auth/profile.html

@@ -0,0 +1,203 @@
+{% extends "base.html" %}
+{% block title %}{{ _('Profilo') }} — TieMeasureFlow{% endblock %}
+
+{% block content %}
+<div class="container mx-auto px-4 sm:px-6 lg:px-8 py-8 max-w-4xl">
+  <!-- Page Header -->
+  <div class="mb-8">
+    <div class="flex items-center space-x-3">
+      <svg class="h-8 w-8 text-primary-600 dark:text-primary-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
+      </svg>
+      <h1 class="text-3xl font-bold text-slate-900 dark:text-white">
+        {{ _('Profilo Utente') }}
+      </h1>
+    </div>
+    <p class="mt-2 text-sm text-slate-600 dark:text-slate-400">
+      {{ _('Gestisci le tue informazioni e preferenze') }}
+    </p>
+  </div>
+
+  <!-- Profile Card -->
+  <div class="bg-white dark:bg-slate-800 shadow-lg rounded-xl overflow-hidden">
+    <form method="POST" action="{{ url_for('auth.profile') }}" class="divide-y divide-slate-200 dark:divide-slate-700">
+      <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+
+      <!-- Account Information Section -->
+      <div class="p-6 sm:p-8">
+        <h2 class="text-lg font-semibold text-slate-900 dark:text-white mb-6">
+          {{ _('Informazioni Account') }}
+        </h2>
+
+        <div class="space-y-6">
+          <!-- Username (readonly) -->
+          <div>
+            <label for="username" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+              {{ _('Username') }}
+            </label>
+            <div class="relative">
+              <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
+                </svg>
+              </div>
+              <input type="text"
+                     id="username"
+                     value="{{ user.username if user else '' }}"
+                     disabled
+                     class="block w-full pl-10 pr-3 py-2.5 border border-slate-200 dark:border-slate-700 rounded-lg bg-slate-50 dark:bg-slate-900 text-slate-500 dark:text-slate-400 cursor-not-allowed">
+            </div>
+            <p class="mt-1 text-xs text-slate-500 dark:text-slate-400">
+              {{ _('Il nome utente non può essere modificato') }}
+            </p>
+          </div>
+
+          <!-- Display Name -->
+          <div>
+            <label for="display_name" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+              {{ _('Nome Visualizzato') }}
+            </label>
+            <div class="relative">
+              <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15.232 5.232l3.536 3.536m-2.036-5.036a2.5 2.5 0 113.536 3.536L6.5 21.036H3v-3.572L16.732 3.732z" />
+                </svg>
+              </div>
+              <input type="text"
+                     id="display_name"
+                     name="display_name"
+                     value="{{ user.display_name if user else '' }}"
+                     placeholder="{{ _('Nome da visualizzare nell\'interfaccia') }}"
+                     class="block w-full pl-10 pr-3 py-2.5 border border-slate-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 dark:focus:ring-primary-400 dark:focus:border-primary-400 bg-white dark:bg-slate-700 text-slate-900 dark:text-white placeholder-slate-400 dark:placeholder-slate-500 transition-colors">
+            </div>
+          </div>
+
+          <!-- Roles (readonly badges) -->
+          {% if user and user.roles %}
+          <div>
+            <label class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+              {{ _('Ruoli') }}
+            </label>
+            <div class="flex flex-wrap gap-2">
+              {% for role in user.roles %}
+                <span class="inline-flex items-center px-3 py-1 rounded-full text-xs font-medium
+                      {% if role == 'Maker' %}
+                        bg-indigo-100 dark:bg-indigo-900/30 text-indigo-800 dark:text-indigo-200 border border-indigo-200 dark:border-indigo-800
+                      {% elif role == 'MeasurementTec' %}
+                        bg-blue-100 dark:bg-blue-900/30 text-blue-800 dark:text-blue-200 border border-blue-200 dark:border-blue-800
+                      {% elif role == 'Metrologist' %}
+                        bg-purple-100 dark:bg-purple-900/30 text-purple-800 dark:text-purple-200 border border-purple-200 dark:border-purple-800
+                      {% else %}
+                        bg-slate-100 dark:bg-slate-700 text-slate-800 dark:text-slate-200 border border-slate-200 dark:border-slate-600
+                      {% endif %}">
+                  <svg class="h-3 w-3 mr-1.5" fill="currentColor" viewBox="0 0 20 20">
+                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd" />
+                  </svg>
+                  {{ _(role) }}
+                </span>
+              {% endfor %}
+            </div>
+          </div>
+          {% endif %}
+        </div>
+      </div>
+
+      <!-- Preferences Section -->
+      <div class="p-6 sm:p-8">
+        <h2 class="text-lg font-semibold text-slate-900 dark:text-white mb-6">
+          {{ _('Preferenze') }}
+        </h2>
+
+        <div class="space-y-6">
+          <!-- Language Preference -->
+          <div>
+            <label for="language_pref" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+              {{ _('Lingua Preferita') }}
+            </label>
+            <div class="relative">
+              <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 5h12M9 3v2m1.048 9.5A18.022 18.022 0 016.412 9m6.088 9h7M11 21l5-10 5 10M12.751 5C11.783 10.77 8.07 15.61 3 18.129" />
+                </svg>
+              </div>
+              <select id="language_pref"
+                      name="language_pref"
+                      class="block w-full pl-10 pr-10 py-2.5 border border-slate-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 dark:focus:ring-primary-400 dark:focus:border-primary-400 bg-white dark:bg-slate-700 text-slate-900 dark:text-white transition-colors">
+                <option value="it" {% if user and user.language_pref == 'it' %}selected{% endif %}>{{ _('Italiano') }}</option>
+                <option value="en" {% if user and user.language_pref == 'en' %}selected{% endif %}>{{ _('English') }}</option>
+              </select>
+            </div>
+          </div>
+
+          <!-- Theme Preference -->
+          <div>
+            <label for="theme_pref" class="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">
+              {{ _('Tema Preferito') }}
+            </label>
+            <div class="relative">
+              <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                <svg class="h-5 w-5 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 21a4 4 0 01-4-4V5a2 2 0 012-2h4a2 2 0 012 2v12a4 4 0 01-4 4zm0 0h12a2 2 0 002-2v-4a2 2 0 00-2-2h-2.343M11 7.343l1.657-1.657a2 2 0 012.828 0l2.829 2.829a2 2 0 010 2.828l-8.486 8.485M7 17h.01" />
+                </svg>
+              </div>
+              <select id="theme_pref"
+                      name="theme_pref"
+                      class="block w-full pl-10 pr-10 py-2.5 border border-slate-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 dark:focus:ring-primary-400 dark:focus:border-primary-400 bg-white dark:bg-slate-700 text-slate-900 dark:text-white transition-colors">
+                <option value="light" {% if user and user.theme_pref == 'light' %}selected{% endif %}>{{ _('Chiaro') }}</option>
+                <option value="dark" {% if user and user.theme_pref == 'dark' %}selected{% endif %}>{{ _('Scuro') }}</option>
+              </select>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <!-- Action Buttons -->
+      <div class="px-6 py-4 sm:px-8 bg-slate-50 dark:bg-slate-900/50 flex items-center justify-between">
+        <a href="/"
+           class="inline-flex items-center px-4 py-2 border border-slate-300 dark:border-slate-600 rounded-lg shadow-sm text-sm font-medium text-slate-700 dark:text-slate-300 bg-white dark:bg-slate-800 hover:bg-slate-50 dark:hover:bg-slate-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 transition-all duration-200">
+          <svg class="h-4 w-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 19l-7-7m0 0l7-7m-7 7h18" />
+          </svg>
+          {{ _('Indietro') }}
+        </a>
+
+        <button type="submit"
+                class="inline-flex items-center px-6 py-2 border border-transparent rounded-lg shadow-sm text-sm font-semibold text-white bg-primary-600 hover:bg-primary-700 dark:bg-primary-500 dark:hover:bg-primary-600 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 transition-all duration-200">
+          <svg class="h-4 w-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7" />
+          </svg>
+          {{ _('Salva Modifiche') }}
+        </button>
+      </div>
+    </form>
+  </div>
+
+  <!-- Account Actions -->
+  <div class="mt-8 bg-white dark:bg-slate-800 shadow-lg rounded-xl overflow-hidden">
+    <div class="p-6 sm:p-8">
+      <h2 class="text-lg font-semibold text-slate-900 dark:text-white mb-4">
+        {{ _('Azioni Account') }}
+      </h2>
+      <div class="flex items-start space-x-4">
+        <div class="flex-shrink-0">
+          <svg class="h-6 w-6 text-red-600 dark:text-red-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h4a3 3 0 013 3v1" />
+          </svg>
+        </div>
+        <div class="flex-1">
+          <h3 class="text-sm font-medium text-slate-900 dark:text-white">{{ _('Esci dal sistema') }}</h3>
+          <p class="mt-1 text-sm text-slate-500 dark:text-slate-400">
+            {{ _('Termina la sessione corrente e torna alla schermata di login') }}
+          </p>
+          <div class="mt-3">
+            <a href="{{ url_for('auth.logout') }}"
+               class="inline-flex items-center px-4 py-2 border border-red-300 dark:border-red-700 rounded-lg shadow-sm text-sm font-medium text-red-700 dark:text-red-300 bg-white dark:bg-slate-800 hover:bg-red-50 dark:hover:bg-red-900/20 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 transition-all duration-200">
+              {{ _('Logout') }}
+            </a>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+{% endblock %}

client/templates/base.html

@@ -0,0 +1,167 @@
+<!DOCTYPE html>
+<html lang="{{ current_language|default('it') }}"
+      :class="{ 'dark': $store.theme.dark }"
+      class="h-full">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta name="description" content="TieMeasureFlow - Sistema di gestione misurazioni industriali">
+  <meta name="csrf-token" content="{{ csrf_token() }}">
+
+  <title>{% block title %}TieMeasureFlow{% endblock %}</title>
+
+  <!-- Favicon -->
+  <link rel="icon" type="image/svg+xml" href="{{ url_for('static', filename='img/tmflow-icon.svg') }}">
+
+  <!-- Google Fonts: Inter + JetBrains Mono -->
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
+
+  <!-- TailwindCSS CDN -->
+  <script src="https://cdn.tailwindcss.com"></script>
+  <script>
+    tailwind.config = {
+      darkMode: 'class',
+      theme: {
+        extend: {
+          colors: {
+            primary: {
+              DEFAULT: '#2563EB',
+              dark: '#1E40AF',
+              light: '#3B82F6',
+              50: '#EFF6FF',
+              100: '#DBEAFE',
+              200: '#BFDBFE',
+              500: '#3B82F6',
+              600: '#2563EB',
+              700: '#1D4ED8',
+              800: '#1E40AF',
+              900: '#1E3A8A',
+            },
+            steel: {
+              DEFAULT: '#64748B',
+              light: '#94A3B8',
+              dark: '#475569',
+              50: '#F8FAFC',
+              100: '#F1F5F9',
+              200: '#E2E8F0',
+              300: '#CBD5E1',
+              400: '#94A3B8',
+              500: '#64748B',
+              600: '#475569',
+              700: '#334155',
+              800: '#1E293B',
+              900: '#0F172A',
+            },
+            measure: {
+              pass: '#059669',
+              warning: '#D97706',
+              fail: '#DC2626',
+            },
+          },
+          fontFamily: {
+            sans: ['Inter', 'system-ui', '-apple-system', 'sans-serif'],
+            mono: ['JetBrains Mono', 'ui-monospace', 'monospace'],
+          },
+        },
+      },
+    }
+  </script>
+
+  <!-- Theme CSS Variables -->
+  <link rel="stylesheet" href="{{ url_for('static', filename='css/themes.css') }}">
+
+  <!-- Alpine.js Theme Init (before Alpine loads) -->
+  <script src="{{ url_for('static', filename='js/alpine-init.js') }}"></script>
+
+  {% block extra_head %}{% endblock %}
+</head>
+
+<body class="h-full bg-[var(--bg-primary)] text-[var(--text-primary)] font-sans antialiased transition-colors duration-300">
+
+  <!-- Alpine.js App Wrapper -->
+  <div x-data class="min-h-full flex flex-col">
+
+    <!-- Navbar -->
+    {% include "components/navbar.html" %}
+
+    <!-- Flash Messages -->
+    {% with messages = get_flashed_messages(with_categories=true) %}
+      {% if messages %}
+        <div class="fixed top-16 right-4 z-50 flex flex-col gap-2 max-w-md w-full"
+             x-data="{ messages: {{ messages|tojson }} }"
+             x-init="setTimeout(() => { $el.remove() }, 8000)">
+          {% for category, message in messages %}
+            <div x-data="{ show: true }"
+                 x-show="show"
+                 x-transition:enter="transition ease-out duration-300"
+                 x-transition:enter-start="opacity-0 translate-x-4"
+                 x-transition:enter-end="opacity-100 translate-x-0"
+                 x-transition:leave="transition ease-in duration-200"
+                 x-transition:leave-start="opacity-100 translate-x-0"
+                 x-transition:leave-end="opacity-0 translate-x-4"
+                 class="flex items-center gap-3 px-4 py-3 rounded-lg shadow-lg border
+                   {% if category == 'success' %}
+                     bg-emerald-50 dark:bg-emerald-900/30 border-emerald-200 dark:border-emerald-800 text-emerald-800 dark:text-emerald-200
+                   {% elif category == 'error' %}
+                     bg-red-50 dark:bg-red-900/30 border-red-200 dark:border-red-800 text-red-800 dark:text-red-200
+                   {% elif category == 'warning' %}
+                     bg-amber-50 dark:bg-amber-900/30 border-amber-200 dark:border-amber-800 text-amber-800 dark:text-amber-200
+                   {% else %}
+                     bg-blue-50 dark:bg-blue-900/30 border-blue-200 dark:border-blue-800 text-blue-800 dark:text-blue-200
+                   {% endif %}">
+
+              <!-- Icon -->
+              {% if category == 'success' %}
+                <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                </svg>
+              {% elif category == 'error' %}
+                <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                </svg>
+              {% elif category == 'warning' %}
+                <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4.5c-.77-.833-2.694-.833-3.464 0L3.34 16.5c-.77.833.192 2.5 1.732 2.5z"/>
+                </svg>
+              {% else %}
+                <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                </svg>
+              {% endif %}
+
+              <span class="text-sm font-medium flex-1">{{ message }}</span>
+
+              <!-- Dismiss -->
+              <button @click="show = false" class="shrink-0 hover:opacity-70 transition-opacity">
+                <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+                </svg>
+              </button>
+            </div>
+          {% endfor %}
+        </div>
+      {% endif %}
+    {% endwith %}
+
+    <!-- Main Content -->
+    <main class="flex-1">
+      {% block content %}{% endblock %}
+    </main>
+
+    <!-- Footer -->
+    <footer class="py-4 text-center border-t border-[var(--border-color)] transition-colors duration-300">
+      <p class="text-xs text-steel dark:text-steel-light tracking-wide">
+        Powered by <span class="font-semibold">TieMeasureFlow</span> &mdash; Tielogic
+      </p>
+    </footer>
+
+  </div>
+
+  <!-- Alpine.js CDN (defer) -->
+  <script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
+
+  {% block extra_js %}{% endblock %}
+</body>
+</html>

client/templates/components/navbar.html

@@ -0,0 +1,324 @@
+<!-- TieMeasureFlow Navbar -->
+<nav class="sticky top-0 z-40 bg-[var(--bg-card)] border-b border-[var(--border-color)] shadow-sm transition-colors duration-300"
+     x-data="{ mobileOpen: false, userDropdown: false, adminDropdown: false }">
+  <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+    <div class="flex items-center justify-between h-14">
+
+      <!-- Left: Logo -->
+      <div class="flex items-center gap-3">
+        <a href="{{ url_for('index') }}" class="flex items-center gap-2.5 group">
+          {% if company_logo %}
+            <img src="{{ url_for('static', filename='img/' ~ company_logo) }}" alt="Logo" class="h-8 w-auto"
+                 onerror="this.src='{{ url_for('static', filename='img/tmflow-logo.svg') }}'">
+          {% else %}
+            <img src="{{ url_for('static', filename='img/tmflow-logo.svg') }}"
+                 alt="TieMeasureFlow"
+                 class="h-8 w-auto">
+          {% endif %}
+        </a>
+      </div>
+
+      <!-- Center: Navigation Links (Desktop) -->
+      {% if current_user %}
+      <div class="hidden md:flex items-center gap-1">
+
+        {# MeasurementTec: Misure #}
+        {% if current_user.get('roles') and 'MeasurementTec' in current_user.roles %}
+        <a href="{{ url_for('measure.select_recipe') }}"
+           class="nav-link group flex items-center gap-2 px-3 py-2 rounded-lg text-sm font-medium
+                  text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                  transition-colors duration-200
+                  {% if request.endpoint and request.endpoint.startswith('measure.') %}
+                    text-primary bg-primary-50 dark:bg-primary-900/20
+                  {% endif %}">
+          <!-- Clipboard Icon -->
+          <svg class="w-4.5 h-4.5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4"/>
+          </svg>
+          <span>Misure</span>
+        </a>
+        {% endif %}
+
+        {# Maker: Ricette #}
+        {% if current_user.get('roles') and 'Maker' in current_user.roles %}
+        <a href="{{ url_for('maker.recipe_list') }}"
+           class="nav-link group flex items-center gap-2 px-3 py-2 rounded-lg text-sm font-medium
+                  text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                  transition-colors duration-200
+                  {% if request.endpoint and request.endpoint.startswith('maker.') %}
+                    text-primary bg-primary-50 dark:bg-primary-900/20
+                  {% endif %}">
+          <!-- Edit/Pencil Icon -->
+          <svg class="w-4.5 h-4.5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"/>
+          </svg>
+          <span>Ricette</span>
+        </a>
+        {% endif %}
+
+        {# Metrologist: Statistiche #}
+        {% if current_user.get('roles') and 'Metrologist' in current_user.roles %}
+        <a href="{{ url_for('statistics.dashboard') }}"
+           class="nav-link group flex items-center gap-2 px-3 py-2 rounded-lg text-sm font-medium
+                  text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                  transition-colors duration-200
+                  {% if request.endpoint and request.endpoint.startswith('statistics.') %}
+                    text-primary bg-primary-50 dark:bg-primary-900/20
+                  {% endif %}">
+          <!-- Chart Icon -->
+          <svg class="w-4.5 h-4.5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"/>
+          </svg>
+          <span>Statistiche</span>
+        </a>
+        {% endif %}
+
+        {# Admin: dropdown #}
+        {% if current_user.get('is_admin') %}
+        <div class="relative" x-data="{ open: false }" @click.outside="open = false">
+          <button @click="open = !open"
+                  class="nav-link group flex items-center gap-2 px-3 py-2 rounded-lg text-sm font-medium
+                         text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                         transition-colors duration-200"
+                  :class="{ 'text-primary bg-primary-50 dark:bg-primary-900/20': open }">
+            <!-- Cog Icon -->
+            <svg class="w-4.5 h-4.5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.066 2.573c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.573 1.066c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.066-2.573c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"/>
+              <path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"/>
+            </svg>
+            <span>Admin</span>
+            <svg class="w-3.5 h-3.5 transition-transform duration-200" :class="{ 'rotate-180': open }"
+                 fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" d="M19 9l-7 7-7-7"/>
+            </svg>
+          </button>
+
+          <!-- Admin Dropdown -->
+          <div x-show="open"
+               x-transition:enter="transition ease-out duration-150"
+               x-transition:enter-start="opacity-0 scale-95 -translate-y-1"
+               x-transition:enter-end="opacity-100 scale-100 translate-y-0"
+               x-transition:leave="transition ease-in duration-100"
+               x-transition:leave-start="opacity-100 scale-100"
+               x-transition:leave-end="opacity-0 scale-95"
+               class="absolute left-0 mt-1 w-48 rounded-lg bg-[var(--bg-card)] border border-[var(--border-color)]
+                      shadow-lg py-1 z-50">
+            <a href="#" class="flex items-center gap-2.5 px-4 py-2.5 text-sm text-[var(--text-secondary)]
+                               hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20 transition-colors">
+              <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z"/>
+              </svg>
+              Utenti
+            </a>
+            <a href="#" class="flex items-center gap-2.5 px-4 py-2.5 text-sm text-[var(--text-secondary)]
+                               hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20 transition-colors">
+              <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M12 6V4m0 2a2 2 0 100 4m0-4a2 2 0 110 4m-6 8a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4m6 6v10m6-2a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4"/>
+              </svg>
+              Impostazioni
+            </a>
+          </div>
+        </div>
+        {% endif %}
+
+      </div>
+      {% endif %}
+
+      <!-- Right: Controls -->
+      <div class="flex items-center gap-2">
+
+        <!-- Language Toggle -->
+        <div class="flex items-center border border-[var(--border-color)] rounded-lg overflow-hidden">
+          <a href="{{ url_for('set_language', lang='it') }}"
+             class="px-2 py-1.5 text-xs font-semibold transition-colors duration-200
+                    {% if current_language == 'it' %}
+                      bg-primary text-white
+                    {% else %}
+                      text-[var(--text-secondary)] hover:bg-[var(--bg-secondary)]
+                    {% endif %}">
+            IT
+          </a>
+          <a href="{{ url_for('set_language', lang='en') }}"
+             class="px-2 py-1.5 text-xs font-semibold transition-colors duration-200
+                    {% if current_language == 'en' %}
+                      bg-primary text-white
+                    {% else %}
+                      text-[var(--text-secondary)] hover:bg-[var(--bg-secondary)]
+                    {% endif %}">
+            EN
+          </a>
+        </div>
+
+        <!-- Theme Toggle -->
+        <button @click="$store.theme.toggle()"
+                class="p-2 rounded-lg text-[var(--text-secondary)] hover:text-primary
+                       hover:bg-[var(--bg-secondary)] transition-colors duration-200"
+                :title="$store.theme.dark ? 'Tema chiaro' : 'Tema scuro'">
+          <!-- Sun (shown in dark mode) -->
+          <svg x-show="$store.theme.dark" x-cloak class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z"/>
+          </svg>
+          <!-- Moon (shown in light mode) -->
+          <svg x-show="!$store.theme.dark" class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/>
+          </svg>
+        </button>
+
+        <!-- User Menu (when logged in) -->
+        {% if current_user %}
+        <div class="relative" x-data="{ open: false }" @click.outside="open = false">
+          <button @click="open = !open"
+                  class="flex items-center gap-2 pl-2 pr-3 py-1.5 rounded-lg
+                         hover:bg-[var(--bg-secondary)] transition-colors duration-200">
+            <!-- Avatar -->
+            <div class="w-7 h-7 rounded-full bg-primary/10 border border-primary/20
+                        flex items-center justify-center text-primary font-semibold text-xs">
+              {{ current_user.get('display_name', current_user.get('username', '?'))[0]|upper }}
+            </div>
+            <span class="hidden sm:block text-sm font-medium text-[var(--text-primary)] max-w-[120px] truncate">
+              {{ current_user.get('display_name', current_user.get('username', '')) }}
+            </span>
+            <svg class="w-3.5 h-3.5 text-[var(--text-secondary)] transition-transform duration-200"
+                 :class="{ 'rotate-180': open }"
+                 fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" d="M19 9l-7 7-7-7"/>
+            </svg>
+          </button>
+
+          <!-- User Dropdown -->
+          <div x-show="open"
+               x-transition:enter="transition ease-out duration-150"
+               x-transition:enter-start="opacity-0 scale-95 -translate-y-1"
+               x-transition:enter-end="opacity-100 scale-100 translate-y-0"
+               x-transition:leave="transition ease-in duration-100"
+               x-transition:leave-start="opacity-100 scale-100"
+               x-transition:leave-end="opacity-0 scale-95"
+               class="absolute right-0 mt-1 w-52 rounded-lg bg-[var(--bg-card)] border border-[var(--border-color)]
+                      shadow-lg py-1 z-50">
+            <!-- User Info Header -->
+            <div class="px-4 py-2.5 border-b border-[var(--border-color)]">
+              <p class="text-sm font-semibold text-[var(--text-primary)] truncate">
+                {{ current_user.get('display_name', current_user.get('username', '')) }}
+              </p>
+              <p class="text-xs text-[var(--text-secondary)] mt-0.5">
+                {{ current_user.get('roles', [])|join(', ') }}
+              </p>
+            </div>
+
+            <a href="{{ url_for('auth.profile') }}"
+               class="flex items-center gap-2.5 px-4 py-2.5 text-sm text-[var(--text-secondary)]
+                      hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20 transition-colors">
+              <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z"/>
+              </svg>
+              Profilo
+            </a>
+
+            <div class="border-t border-[var(--border-color)] my-1"></div>
+
+            <a href="{{ url_for('auth.logout') }}"
+               class="flex items-center gap-2.5 px-4 py-2.5 text-sm text-measure-fail
+                      hover:bg-red-50 dark:hover:bg-red-900/20 transition-colors">
+              <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h4a3 3 0 013 3v1"/>
+              </svg>
+              Logout
+            </a>
+          </div>
+        </div>
+        {% endif %}
+
+        <!-- Mobile Hamburger (when logged in) -->
+        {% if current_user %}
+        <button @click="mobileOpen = !mobileOpen"
+                class="md:hidden p-2 rounded-lg text-[var(--text-secondary)]
+                       hover:bg-[var(--bg-secondary)] transition-colors duration-200">
+          <svg x-show="!mobileOpen" class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M4 6h16M4 12h16M4 18h16"/>
+          </svg>
+          <svg x-show="mobileOpen" x-cloak class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/>
+          </svg>
+        </button>
+        {% endif %}
+
+      </div>
+    </div>
+  </div>
+
+  <!-- Mobile Menu -->
+  {% if current_user %}
+  <div x-show="mobileOpen"
+       x-transition:enter="transition ease-out duration-200"
+       x-transition:enter-start="opacity-0 -translate-y-2"
+       x-transition:enter-end="opacity-100 translate-y-0"
+       x-transition:leave="transition ease-in duration-150"
+       x-transition:leave-start="opacity-100 translate-y-0"
+       x-transition:leave-end="opacity-0 -translate-y-2"
+       x-cloak
+       class="md:hidden border-t border-[var(--border-color)] bg-[var(--bg-card)]">
+    <div class="px-4 py-3 space-y-1">
+
+      {% if current_user.get('roles') and 'MeasurementTec' in current_user.roles %}
+      <a href="{{ url_for('measure.select_recipe') }}"
+         class="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium
+                text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                transition-colors">
+        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4"/>
+        </svg>
+        Misure
+      </a>
+      {% endif %}
+
+      {% if current_user.get('roles') and 'Maker' in current_user.roles %}
+      <a href="{{ url_for('maker.recipe_list') }}"
+         class="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium
+                text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                transition-colors">
+        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"/>
+        </svg>
+        Ricette
+      </a>
+      {% endif %}
+
+      {% if current_user.get('roles') and 'Metrologist' in current_user.roles %}
+      <a href="{{ url_for('statistics.dashboard') }}"
+         class="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium
+                text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                transition-colors">
+        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"/>
+        </svg>
+        Statistiche
+      </a>
+      {% endif %}
+
+      {% if current_user.get('is_admin') %}
+      <div class="border-t border-[var(--border-color)] my-2"></div>
+      <p class="px-3 py-1 text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">Admin</p>
+      <a href="#"
+         class="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium
+                text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                transition-colors">
+        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z"/>
+        </svg>
+        Utenti
+      </a>
+      <a href="#"
+         class="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium
+                text-[var(--text-secondary)] hover:text-primary hover:bg-primary-50 dark:hover:bg-primary-900/20
+                transition-colors">
+        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M12 6V4m0 2a2 2 0 100 4m0-4a2 2 0 110 4m-6 8a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4m6 6v10m6-2a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4"/>
+        </svg>
+        Impostazioni
+      </a>
+      {% endif %}
+
+    </div>
+  </div>
+  {% endif %}
+</nav>

client/translations/babel.cfg

@@ -1,3 +1,5 @@
+[python: *.py]
 [python: blueprints/**.py]
+[python: services/**.py]
 [jinja2: templates/**.html]
 encoding = utf-8

client/translations/en/LC_MESSAGES/messages.po

@@ -0,0 +1,247 @@
+# English translations for TieMeasureFlow
+msgid ""
+msgstr ""
+"Project-Id-Version: TieMeasureFlow 1.0\n"
+"Language: en\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+# Login Page
+msgid "Accedi al sistema"
+msgstr "Sign in to your account"
+
+msgid "Username"
+msgstr "Username"
+
+msgid "Password"
+msgstr "Password"
+
+msgid "Accedi"
+msgstr "Sign In"
+
+msgid "Credenziali non valide"
+msgstr "Invalid credentials"
+
+msgid "Inserisci username e password"
+msgstr "Enter username and password"
+
+msgid "Hai dimenticato la password?"
+msgstr "Forgot password?"
+
+msgid "Contatta l'amministratore"
+msgstr "Contact administrator"
+
+# Navbar
+msgid "Misure"
+msgstr "Measurements"
+
+msgid "Ricette"
+msgstr "Recipes"
+
+msgid "Statistiche"
+msgstr "Statistics"
+
+msgid "Admin"
+msgstr "Admin"
+
+msgid "Utenti"
+msgstr "Users"
+
+msgid "Impostazioni"
+msgstr "Settings"
+
+msgid "Profilo"
+msgstr "Profile"
+
+msgid "Esci"
+msgstr "Logout"
+
+# Profile Page
+msgid "Profilo Utente"
+msgstr "User Profile"
+
+msgid "Nome Visualizzato"
+msgstr "Display Name"
+
+msgid "Lingua"
+msgstr "Language"
+
+msgid "Tema"
+msgstr "Theme"
+
+msgid "Chiaro"
+msgstr "Light"
+
+msgid "Scuro"
+msgstr "Dark"
+
+msgid "Ruoli"
+msgstr "Roles"
+
+msgid "Salva Modifiche"
+msgstr "Save Changes"
+
+msgid "Profilo aggiornato con successo"
+msgstr "Profile updated successfully"
+
+# Flash Messages
+msgid "Benvenuto, %(name)s!"
+msgstr "Welcome, %(name)s!"
+
+msgid "Logout effettuato"
+msgstr "Logged out successfully"
+
+msgid "Effettua il login per continuare"
+msgstr "Please log in to continue"
+
+msgid "Errore di connessione al server"
+msgstr "Server connection error"
+
+# Common UI
+msgid "Caricamento..."
+msgstr "Loading..."
+
+msgid "Salva"
+msgstr "Save"
+
+msgid "Annulla"
+msgstr "Cancel"
+
+msgid "Conferma"
+msgstr "Confirm"
+
+msgid "Elimina"
+msgstr "Delete"
+
+msgid "Modifica"
+msgstr "Edit"
+
+msgid "Cerca..."
+msgstr "Search..."
+
+msgid "Nessun risultato"
+msgstr "No results"
+
+msgid "Errore"
+msgstr "Error"
+
+msgid "Successo"
+msgstr "Success"
+
+msgid "Attenzione"
+msgstr "Warning"
+
+msgid "Info"
+msgstr "Info"
+
+msgid "Pagina"
+msgstr "Page"
+
+msgid "di"
+msgstr "of"
+
+msgid "Precedente"
+msgstr "Previous"
+
+msgid "Successivo"
+msgstr "Next"
+
+# Measurements
+msgid "Conforme"
+msgstr "Pass"
+
+msgid "Non Conforme"
+msgstr "Fail"
+
+msgid "Valore"
+msgstr "Value"
+
+msgid "Prossima misura"
+msgstr "Next measurement"
+
+# Numpad
+msgid "Tastierino Numerico"
+msgstr "Numeric Keypad"
+
+msgid "Cancella"
+msgstr "Clear"
+
+msgid "Virgola"
+msgstr "Decimal"
+
+msgid "Chiudi"
+msgstr "Close"
+
+# Theme
+msgid "Cambia tema"
+msgstr "Toggle theme"
+
+# Language
+msgid "Cambia lingua"
+msgstr "Switch language"
+
+msgid "Italiano"
+msgstr "Italian"
+
+msgid "English"
+msgstr "English"
+
+# Additional Login Page
+msgid "Sistema di misurazione industriale"
+msgstr "Industrial measurement system"
+
+# Additional Profile Page
+msgid "Gestisci le tue informazioni e preferenze"
+msgstr "Manage your information and preferences"
+
+msgid "Informazioni Account"
+msgstr "Account Information"
+
+msgid "Il nome utente non può essere modificato"
+msgstr "Username cannot be changed"
+
+msgid "Nome da visualizzare nell'interfaccia"
+msgstr "Name to display in the interface"
+
+msgid "Lingua Preferita"
+msgstr "Preferred Language"
+
+msgid "Tema Preferito"
+msgstr "Preferred Theme"
+
+msgid "Indietro"
+msgstr "Back"
+
+msgid "Azioni Account"
+msgstr "Account Actions"
+
+msgid "Esci dal sistema"
+msgstr "Logout from system"
+
+msgid "Termina la sessione corrente e torna alla schermata di login"
+msgstr "End current session and return to login screen"
+
+msgid "Preferenze"
+msgstr "Preferences"
+
+# Error Messages
+msgid "Errore durante l'aggiornamento del profilo"
+msgstr "Error updating profile"
+
+msgid "Errore di connessione al server: %(error)s"
+msgstr "Server connection error: %(error)s"
+
+msgid "Errore nel caricamento del profilo: %(error)s"
+msgstr "Error loading profile: %(error)s"
+
+# Roles
+msgid "Maker"
+msgstr "Maker"
+
+msgid "MeasurementTec"
+msgstr "Measurement Technician"
+
+msgid "Metrologist"
+msgstr "Metrologist"

client/translations/it/LC_MESSAGES/messages.po

@@ -0,0 +1,247 @@
+# Italian translations for TieMeasureFlow
+msgid ""
+msgstr ""
+"Project-Id-Version: TieMeasureFlow 1.0\n"
+"Language: it\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+# Login Page
+msgid "Accedi al sistema"
+msgstr "Accedi al sistema"
+
+msgid "Username"
+msgstr "Username"
+
+msgid "Password"
+msgstr "Password"
+
+msgid "Accedi"
+msgstr "Accedi"
+
+msgid "Credenziali non valide"
+msgstr "Credenziali non valide"
+
+msgid "Inserisci username e password"
+msgstr "Inserisci username e password"
+
+msgid "Hai dimenticato la password?"
+msgstr "Hai dimenticato la password?"
+
+msgid "Contatta l'amministratore"
+msgstr "Contatta l'amministratore"
+
+# Navbar
+msgid "Misure"
+msgstr "Misure"
+
+msgid "Ricette"
+msgstr "Ricette"
+
+msgid "Statistiche"
+msgstr "Statistiche"
+
+msgid "Admin"
+msgstr "Admin"
+
+msgid "Utenti"
+msgstr "Utenti"
+
+msgid "Impostazioni"
+msgstr "Impostazioni"
+
+msgid "Profilo"
+msgstr "Profilo"
+
+msgid "Esci"
+msgstr "Esci"
+
+# Profile Page
+msgid "Profilo Utente"
+msgstr "Profilo Utente"
+
+msgid "Nome Visualizzato"
+msgstr "Nome Visualizzato"
+
+msgid "Lingua"
+msgstr "Lingua"
+
+msgid "Tema"
+msgstr "Tema"
+
+msgid "Chiaro"
+msgstr "Chiaro"
+
+msgid "Scuro"
+msgstr "Scuro"
+
+msgid "Ruoli"
+msgstr "Ruoli"
+
+msgid "Salva Modifiche"
+msgstr "Salva Modifiche"
+
+msgid "Profilo aggiornato con successo"
+msgstr "Profilo aggiornato con successo"
+
+# Flash Messages
+msgid "Benvenuto, %(name)s!"
+msgstr "Benvenuto, %(name)s!"
+
+msgid "Logout effettuato"
+msgstr "Logout effettuato"
+
+msgid "Effettua il login per continuare"
+msgstr "Effettua il login per continuare"
+
+msgid "Errore di connessione al server"
+msgstr "Errore di connessione al server"
+
+# Common UI
+msgid "Caricamento..."
+msgstr "Caricamento..."
+
+msgid "Salva"
+msgstr "Salva"
+
+msgid "Annulla"
+msgstr "Annulla"
+
+msgid "Conferma"
+msgstr "Conferma"
+
+msgid "Elimina"
+msgstr "Elimina"
+
+msgid "Modifica"
+msgstr "Modifica"
+
+msgid "Cerca..."
+msgstr "Cerca..."
+
+msgid "Nessun risultato"
+msgstr "Nessun risultato"
+
+msgid "Errore"
+msgstr "Errore"
+
+msgid "Successo"
+msgstr "Successo"
+
+msgid "Attenzione"
+msgstr "Attenzione"
+
+msgid "Info"
+msgstr "Info"
+
+msgid "Pagina"
+msgstr "Pagina"
+
+msgid "di"
+msgstr "di"
+
+msgid "Precedente"
+msgstr "Precedente"
+
+msgid "Successivo"
+msgstr "Successivo"
+
+# Measurements
+msgid "Conforme"
+msgstr "Conforme"
+
+msgid "Non Conforme"
+msgstr "Non Conforme"
+
+msgid "Valore"
+msgstr "Valore"
+
+msgid "Prossima misura"
+msgstr "Prossima misura"
+
+# Numpad
+msgid "Tastierino Numerico"
+msgstr "Tastierino Numerico"
+
+msgid "Cancella"
+msgstr "Cancella"
+
+msgid "Virgola"
+msgstr "Virgola"
+
+msgid "Chiudi"
+msgstr "Chiudi"
+
+# Theme
+msgid "Cambia tema"
+msgstr "Cambia tema"
+
+# Language
+msgid "Cambia lingua"
+msgstr "Cambia lingua"
+
+msgid "Italiano"
+msgstr "Italiano"
+
+msgid "English"
+msgstr "English"
+
+# Additional Login Page
+msgid "Sistema di misurazione industriale"
+msgstr "Sistema di misurazione industriale"
+
+# Additional Profile Page
+msgid "Gestisci le tue informazioni e preferenze"
+msgstr "Gestisci le tue informazioni e preferenze"
+
+msgid "Informazioni Account"
+msgstr "Informazioni Account"
+
+msgid "Il nome utente non può essere modificato"
+msgstr "Il nome utente non può essere modificato"
+
+msgid "Nome da visualizzare nell'interfaccia"
+msgstr "Nome da visualizzare nell'interfaccia"
+
+msgid "Lingua Preferita"
+msgstr "Lingua Preferita"
+
+msgid "Tema Preferito"
+msgstr "Tema Preferito"
+
+msgid "Indietro"
+msgstr "Indietro"
+
+msgid "Azioni Account"
+msgstr "Azioni Account"
+
+msgid "Esci dal sistema"
+msgstr "Esci dal sistema"
+
+msgid "Termina la sessione corrente e torna alla schermata di login"
+msgstr "Termina la sessione corrente e torna alla schermata di login"
+
+msgid "Preferenze"
+msgstr "Preferenze"
+
+# Error Messages
+msgid "Errore durante l'aggiornamento del profilo"
+msgstr "Errore durante l'aggiornamento del profilo"
+
+msgid "Errore di connessione al server: %(error)s"
+msgstr "Errore di connessione al server: %(error)s"
+
+msgid "Errore nel caricamento del profilo: %(error)s"
+msgstr "Errore nel caricamento del profilo: %(error)s"
+
+# Roles
+msgid "Maker"
+msgstr "Maker"
+
+msgid "MeasurementTec"
+msgstr "Tecnico di Misura"
+
+msgid "Metrologist"
+msgstr "Metrologo"