diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6d4329e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+# Python
+__pycache__/
+*.pyc
+*.pyo
+
+# Virtual env
+.venv/
+
+# VS Code
+.vscode/
+
+# OS
+.DS_Store
+
+# Logs
+*.log
+
+# Docker
+*.db
\ No newline at end of file
diff --git a/app.py b/app.py
index 9a48576..5cee0e7 100644
--- a/app.py
+++ b/app.py
@@ -1,12 +1,22 @@
 from flask import Flask, jsonify, render_template, request, redirect, url_for, session
 from flask_cors import CORS
 from config import Config
+from werkzeug.security import check_password_hash
+from functools import wraps
+from datetime import timedelta
 import psycopg2
 
 app = Flask(__name__)
 app.config.from_object(Config)
+
 app.secret_key = app.config["SECRET_KEY"]
 
+app.config["SESSION_PERMANENT"] = True
+app.config["PERMANENT_SESSION_LIFETIME"] = timedelta(hours=2)
+app.config["SESSION_COOKIE_HTTPONLY"] = True
+app.config["SESSION_COOKIE_SAMESITE"] = "Lax"
+app.config["SESSION_COOKIE_SECURE"] = False
+
 CORS(app)
 
 
@@ -26,19 +36,24 @@ def get_setting_value(cur, key, default_value):
     return row[0] if row else default_value
 
 
-# ========================================================
-# MODIFICATION ÉTUDIANT 3 : Sécurisation de l'accueil
-# ========================================================
+def admin_required(view_func):
+    @wraps(view_func)
+    def wrapped_view(*args, **kwargs):
+        if not session.get("admin_logged_in"):
+            return redirect(url_for("admin_login"))
+        return view_func(*args, **kwargs)
+    return wrapped_view
+
+
+@app.before_request
+def make_session_permanent():
+    session.permanent = True
+
+
 @app.route("/")
+@admin_required
 def home():
-    # Si l'utilisateur n'est pas connecté en tant qu'admin,
-    # on le force à aller sur la page de connexion.
-    if not session.get("admin_logged_in"):
-        return redirect(url_for("admin_login"))
-    
-    # S'il est connecté, on lui affiche le Dashboard.
     return render_template("index.html")
-# ========================================================
 
 
 @app.route("/api/status")
@@ -52,32 +67,23 @@ def status():
 
 @app.route("/api/data", methods=["POST"])
 def receive_data():
-    data = request.get_json()
+    data = request.get_json(silent=True)
 
     if not data:
         return jsonify({"error": "Aucune donnée JSON reçue"}), 400
 
-    # Données environnement
     temperature_ext = data.get("temperature_ext")
     humidity_ext = data.get("humidity_ext")
     system_status_msg = data.get("system_status")
 
-    # Données panneau solaire
     voltage_pv = data.get("voltage_pv")
     current_pv = data.get("current_pv")
-
-    # compatible solar_power
     power_pv = data.get("power_pv", data.get("solar_power"))
-
     luminosity = data.get("luminosity")
 
-    # Données batterie
     voltage_battery = data.get("voltage_battery", data.get("battery_voltage"))
     current_battery = data.get("current_battery")
-
-    # compatible battery_temperature
     battery_temp = data.get("battery_temp", data.get("battery_temperature"))
-
     battery_level = data.get("battery_level")
 
     conn = get_connection()
@@ -91,10 +97,8 @@ def receive_data():
 
     if battery_temp is not None and float(battery_temp) > max_battery_temperature:
         battery_alert = "Température batterie trop élevée"
-
     elif voltage_battery is not None and float(voltage_battery) < min_battery_voltage:
         battery_alert = "Tension batterie trop faible"
-
     elif power_pv is not None and float(power_pv) < min_solar_power:
         battery_alert = "Puissance solaire insuffisante"
 
@@ -140,7 +144,6 @@ def receive_data():
 
 @app.route("/api/latest", methods=["GET"])
 def latest_data():
-
     conn = get_connection()
     cur = conn.cursor()
 
@@ -191,20 +194,69 @@ def latest_data():
     })
 
 
+@app.route("/api/history", methods=["GET"])
+def history_data():
+    limit = request.args.get("limit", default=10, type=int)
+
+    if limit is None or limit <= 0:
+        limit = 10
+
+    if limit > 50:
+        limit = 50
+
+    conn = get_connection()
+    cur = conn.cursor()
+
+    cur.execute("""
+        SELECT
+            id,
+            created_at,
+            temperature_ext,
+            humidity_ext,
+            power_pv,
+            battery_level
+        FROM telemetry
+        ORDER BY created_at DESC
+        LIMIT %s
+    """, (limit,))
+
+    rows = cur.fetchall()
+
+    cur.close()
+    conn.close()
+
+    history = []
+    for row in reversed(rows):
+        history.append({
+            "id": row[0],
+            "created_at": str(row[1]),
+            "temperature_ext": row[2],
+            "humidity_ext": row[3],
+            "power_pv": row[4],
+            "battery_level": row[5]
+        })
+
+    return jsonify(history)
+
+
 @app.route("/admin/login", methods=["GET", "POST"])
 def admin_login():
+    if session.get("admin_logged_in"):
+        return redirect(url_for("home"))
 
     if request.method == "POST":
+        username = request.form.get("username", "").strip()
+        password = request.form.get("password", "")
 
-        username = request.form.get("username")
-        password = request.form.get("password")
+        if not username or not password:
+            return render_template("login.html", error="Veuillez remplir tous les champs")
 
         conn = get_connection()
         cur = conn.cursor()
 
         cur.execute(
-            "SELECT id FROM users WHERE username = %s AND password = %s AND is_admin = TRUE",
-            (username, password)
+            "SELECT id, username, password FROM users WHERE username = %s AND is_admin = TRUE",
+            (username,)
         )
 
         user = cur.fetchone()
@@ -213,13 +265,14 @@ def admin_login():
         conn.close()
 
         if user:
-            session["admin_logged_in"] = True
-            
-            # ========================================================
-            # MODIFICATION ÉTUDIANT 3 : Redirection vers le Dashboard
-            # ========================================================
-            return redirect(url_for("home"))
-            # ========================================================
+            user_id, db_username, password_hash = user
+
+            if check_password_hash(password_hash, password):
+                session.clear()
+                session["admin_logged_in"] = True
+                session["admin_id"] = user_id
+                session["admin_username"] = db_username
+                return redirect(url_for("home"))
 
         return render_template("login.html", error="Identifiants incorrects")
 
@@ -227,16 +280,12 @@ def admin_login():
 
 
 @app.route("/admin/dashboard", methods=["GET", "POST"])
+@admin_required
 def admin_dashboard():
-
-    if not session.get("admin_logged_in"):
-        return redirect(url_for("admin_login"))
-
     conn = get_connection()
     cur = conn.cursor()
 
     if request.method == "POST":
-
         min_battery = request.form.get("min_battery")
         max_temp = request.form.get("max_temp")
         min_power = request.form.get("min_power")
@@ -276,11 +325,10 @@ def admin_dashboard():
     return render_template("admin_dashboard.html", settings=settings)
 
 
-@app.route("/admin/logout")
+@app.route("/admin/logout", methods=["GET", "POST"])
+@admin_required
 def admin_logout():
-
-    session.pop("admin_logged_in", None)
-
+    session.clear()
     return redirect(url_for("admin_login"))
 
 
diff --git a/create_admin.py b/create_admin.py
new file mode 100644
index 0000000..ea47a18
--- /dev/null
+++ b/create_admin.py
@@ -0,0 +1,51 @@
+import psycopg2
+from werkzeug.security import generate_password_hash
+
+DB_HOST = "localhost"
+DB_PORT = "5432"
+DB_NAME = "ecocharge"
+DB_USER = "ecocharge_user"
+DB_PASSWORD = "ecocharge_password"
+
+USERNAME = "admin"
+PLAIN_PASSWORD = "admin123"
+
+def main():
+    password_hash = generate_password_hash(PLAIN_PASSWORD)
+
+    conn = psycopg2.connect(
+        host=DB_HOST,
+        port=DB_PORT,
+        database=DB_NAME,
+        user=DB_USER,
+        password=DB_PASSWORD
+    )
+    cur = conn.cursor()
+
+    cur.execute("SELECT id FROM users WHERE username = %s", (USERNAME,))
+    user = cur.fetchone()
+
+    if user:
+        cur.execute("""
+            UPDATE users
+            SET password = %s, is_admin = TRUE
+            WHERE username = %s
+        """, (password_hash, USERNAME))
+        print(f"Utilisateur '{USERNAME}' mis à jour avec un mot de passe haché.")
+    else:
+        cur.execute("""
+            INSERT INTO users (username, password, is_admin)
+            VALUES (%s, %s, TRUE)
+        """, (USERNAME, password_hash))
+        print(f"Utilisateur '{USERNAME}' créé avec un mot de passe haché.")
+
+    conn.commit()
+    cur.close()
+    conn.close()
+
+    print("Terminé.")
+    print(f"Nom d'utilisateur : {USERNAME}")
+    print(f"Mot de passe : {PLAIN_PASSWORD}")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/database.sql b/database.sql
index 416e784..f0b034e 100644
--- a/database.sql
+++ b/database.sql
@@ -36,11 +36,10 @@ CREATE TABLE telemetry (
     battery_alert VARCHAR(100)
 );
 
-INSERT INTO users (username, password, is_admin)
-VALUES ('admin', 'admin123', TRUE);
+CREATE INDEX idx_telemetry_created_at ON telemetry(created_at DESC);
 
 INSERT INTO settings (key, value)
 VALUES
     ('min_battery_voltage', '11'),
     ('max_battery_temperature', '60'),
-    ('min_solar_power', '5');
+    ('min_solar_power', '5');
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index cf9dd0e..1ecd91d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,7 +1,4 @@
-version: '3.8'
-
 services:
-  # 1. LA BASE DE DONNÉES (PostgreSQL)
   db:
     image: postgres:15-alpine
     container_name: ecocharge_db
@@ -10,22 +7,19 @@ services:
       POSTGRES_PASSWORD: ecocharge_password
       POSTGRES_DB: ecocharge
     ports:
-      - "5432:5432" # <-- Très important : ça te permet de t'y connecter avec DBeaver !
+      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
-      # La ligne magique : Docker va lire ton database.sql et créer les tables tout seul au premier lancement !
       - ./database.sql:/docker-entrypoint-initdb.d/init.sql
 
-  # 2. TON SERVEUR WEB (Flask)
   web:
     build: .
     container_name: ecocharge_web
     ports:
-      - "5001:5000" # Ton Dashboard sera sur http://localhost:5000
+      - "5001:5000"
     depends_on:
       - db
     environment:
-      # On donne les identifiants au serveur Python pour qu'il trouve la BDD
       - DB_HOST=db
       - DB_PORT=5432
       - DB_NAME=ecocharge
diff --git a/static/script.js b/static/script.js
index a314bbc..0c85eaa 100644
--- a/static/script.js
+++ b/static/script.js
@@ -1,9 +1,7 @@
-// --- VARIABLES D'ÉTAT ---
 let isOnline = true;
 let lastHeartbeat = Date.now();
 const TIMEOUT_MS = 5000;
 
-// --- ÉLÉMENTS DU DOM PRINCIPAUX ---
 const statusDot = document.getElementById('system-status');
 const statusText = document.getElementById('status-text');
 
@@ -14,21 +12,19 @@ const apiTempEl = document.getElementById('api-temp');
 const apiDescEl = document.getElementById('api-desc');
 const apiIconEl = document.getElementById('api-icon');
 
-// --- ÉLÉMENTS DOM BATTERIE (Étudiant 2) ---
 const batValEl = document.getElementById('bat-val');
 const batCircleEl = document.getElementById('bat-circle');
 const batAlertBadge = document.getElementById('bat-alert-badge');
 const batAlertIcon = document.getElementById('bat-alert-icon');
 const batAlertText = document.getElementById('bat-alert');
 
-// --- CONSTANTES SOLAIRE (Étudiant 1) ---
-const MAX_POWER = 100; // Puissance maximum du panneau en Watts (à adapter si besoin)
+const MAX_POWER = 100;
 const gaugeCircle = document.querySelector('.gauge-fill circle');
 const halfCircumference = 283 / 2;
 
-// =================================================================
-// --- GESTION DE LA VRAIE API MÉTÉO WEB (Open-Meteo) ---
-// =================================================================
+let envChart = null;
+let energyChart = null;
+
 function getWeatherDetails(code) {
     if (code === 0) return { desc: "Dégagé", icon: "bi-brightness-high", color: "text-warning" };
     if (code >= 1 && code <= 3) return { desc: "Nuageux", icon: "bi-cloud", color: "text-light" };
@@ -41,8 +37,8 @@ function getWeatherDetails(code) {
 
 async function fetchRealWeather() {
     try {
-        const lat = 48.8566; // Tu peux changer avec la latitude de ta ville
-        const lon = 2.3522;  // Tu peux changer avec la longitude de ta ville
+        const lat = 48.8566;
+        const lon = 2.3522;
         const url = `https://api.open-meteo.com/v1/forecast?latitude=${lat}&longitude=${lon}&current=temperature_2m,weather_code`;
 
         const response = await fetch(url);
@@ -55,31 +51,32 @@ async function fetchRealWeather() {
         apiTempEl.innerText = temp + "°C";
         apiDescEl.innerText = weather.desc;
         apiIconEl.className = "bi " + weather.icon + " " + weather.color + " display-4 me-3";
-
     } catch (error) {
         console.error("Erreur Météo:", error);
     }
 }
 
-// =================================================================
-// --- MISE À JOUR VISUELLE DES WIDGETS ---
-// =================================================================
-
-function updateBattery(percent) {
+function updateBattery(percent, alertTextFromApi = null) {
     batValEl.innerText = percent + "%";
     let color = "#34d399";
     let shadowColor = "rgba(52, 211, 153, 0.4)";
 
-    if (percent <= 20) {
+    if (alertTextFromApi && alertTextFromApi !== "none") {
         color = "#ef4444";
         shadowColor = "rgba(239, 68, 68, 0.6)";
-        batAlertText.innerText = "Tension Critique !";
+        batAlertText.innerText = alertTextFromApi;
+        batAlertIcon.className = "bi bi-exclamation-triangle-fill text-danger";
+        batAlertBadge.className = "badge bg-dark border border-danger text-secondary w-100 py-2";
+    } else if (percent <= 20) {
+        color = "#ef4444";
+        shadowColor = "rgba(239, 68, 68, 0.6)";
+        batAlertText.innerText = "Niveau critique";
         batAlertIcon.className = "bi bi-exclamation-triangle-fill text-danger";
         batAlertBadge.className = "badge bg-dark border border-danger text-secondary w-100 py-2";
     } else if (percent <= 50) {
         color = "#fbbf24";
         shadowColor = "rgba(251, 191, 36, 0.5)";
-        batAlertText.innerText = "Niveau Moyen";
+        batAlertText.innerText = "Niveau moyen";
         batAlertIcon.className = "bi bi-exclamation-circle text-warning";
         batAlertBadge.className = "badge bg-dark border border-warning text-secondary w-100 py-2";
     } else {
@@ -95,14 +92,12 @@ function updateBattery(percent) {
 }
 
 function updateSolar(voltage, current, power, lux) {
-    // On s'assure que ce sont des nombres et on les formate
     const v = Number(voltage).toFixed(1);
     const c = Number(current).toFixed(2);
     const p = Number(power).toFixed(1);
     const l = Math.floor(Number(lux));
 
-    // Le serveur de l'étudiant 4 ne stocke pas l'efficacité, on simule ~15% quand il y a du soleil
-    const efficiency = (p > 0) ? (14 + Math.random() * 2).toFixed(1) : "0.0";
+    const efficiency = (p > 0) ? ((p / MAX_POWER) * 100).toFixed(1) : "0.0";
 
     document.getElementById('powerValue').textContent = p;
     document.getElementById('voltage').innerHTML = v + ' <span class="stat-unit">V</span>';
@@ -110,7 +105,6 @@ function updateSolar(voltage, current, power, lux) {
     document.getElementById('lux').innerHTML = l.toLocaleString() + ' <span class="stat-unit">Lux</span>';
     document.getElementById('efficiency').innerHTML = efficiency + ' <span class="stat-unit">%</span>';
 
-    // Animation de la jauge SVG
     const ratio = Math.min(p / MAX_POWER, 1);
     const offset = halfCircumference - (ratio * halfCircumference);
 
@@ -119,15 +113,182 @@ function updateSolar(voltage, current, power, lux) {
     }
 }
 
-// =================================================================
-// --- NOUVEAU : CONNEXION AU SERVEUR PYTHON (BASE DE DONNÉES) ---
-// =================================================================
+function createEnvChart() {
+    const ctx = document.getElementById('envChart');
+    if (!ctx) return;
+
+    envChart = new Chart(ctx, {
+        type: 'line',
+        data: {
+            labels: [],
+            datasets: [
+                {
+                    label: 'Température (°C)',
+                    data: [],
+                    borderColor: '#38bdf8',
+                    backgroundColor: 'rgba(56, 189, 248, 0.2)',
+                    pointBackgroundColor: '#38bdf8',
+                    pointBorderColor: '#38bdf8',
+                    borderWidth: 2,
+                    tension: 0.3
+                },
+                {
+                    label: 'Humidité (%)',
+                    data: [],
+                    borderColor: '#ff5c8a',
+                    backgroundColor: 'rgba(255, 92, 138, 0.2)',
+                    pointBackgroundColor: '#ff5c8a',
+                    pointBorderColor: '#ff5c8a',
+                    borderWidth: 2,
+                    tension: 0.3
+                }
+            ]
+        },
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            interaction: {
+                mode: 'index',
+                intersect: false
+            },
+            plugins: {
+                legend: {
+                    labels: {
+                        color: '#e2e8f0'
+                    }
+                }
+            },
+            scales: {
+                x: {
+                    ticks: {
+                        color: '#94a3b8'
+                    },
+                    grid: {
+                        color: 'rgba(148, 163, 184, 0.1)'
+                    }
+                },
+                y: {
+                    ticks: {
+                        color: '#94a3b8'
+                    },
+                    grid: {
+                        color: 'rgba(148, 163, 184, 0.1)'
+                    }
+                }
+            }
+        }
+    });
+}
+
+function createEnergyChart() {
+    const ctx = document.getElementById('energyChart');
+    if (!ctx) return;
+
+    energyChart = new Chart(ctx, {
+        type: 'line',
+        data: {
+            labels: [],
+            datasets: [
+                {
+                    label: 'Batterie (%)',
+                    data: [],
+                    borderColor: '#34d399',
+                    backgroundColor: 'rgba(52, 211, 153, 0.2)',
+                    pointBackgroundColor: '#34d399',
+                    pointBorderColor: '#34d399',
+                    borderWidth: 2,
+                    tension: 0.3
+                },
+                {
+                    label: 'Puissance solaire (W)',
+                    data: [],
+                    borderColor: '#facc15',
+                    backgroundColor: 'rgba(250, 204, 21, 0.2)',
+                    pointBackgroundColor: '#facc15',
+                    pointBorderColor: '#facc15',
+                    borderWidth: 2,
+                    tension: 0.3
+                }
+            ]
+        },
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            interaction: {
+                mode: 'index',
+                intersect: false
+            },
+            plugins: {
+                legend: {
+                    labels: {
+                        color: '#e2e8f0'
+                    }
+                }
+            },
+            scales: {
+                x: {
+                    ticks: {
+                        color: '#94a3b8'
+                    },
+                    grid: {
+                        color: 'rgba(148, 163, 184, 0.1)'
+                    }
+                },
+                y: {
+                    ticks: {
+                        color: '#94a3b8'
+                    },
+                    grid: {
+                        color: 'rgba(148, 163, 184, 0.1)'
+                    }
+                }
+            }
+        }
+    });
+}
+
+async function fetchHistoryData() {
+    try {
+        const response = await fetch('/api/history?limit=10');
+
+        if (!response.ok) {
+            throw new Error("Impossible de récupérer l'historique");
+        }
+
+        const history = await response.json();
+
+        const labels = history.map(item => {
+            const date = new Date(item.created_at);
+            return date.toLocaleTimeString('fr-FR', {
+                hour: '2-digit',
+                minute: '2-digit',
+                second: '2-digit'
+            });
+        });
+
+        if (envChart) {
+            envChart.data.labels = labels;
+            envChart.data.datasets[0].data = history.map(item => item.temperature_ext ?? null);
+            envChart.data.datasets[1].data = history.map(item => item.humidity_ext ?? null);
+            envChart.update();
+        }
+
+        if (energyChart) {
+            energyChart.data.labels = labels;
+            energyChart.data.datasets[0].data = history.map(item => item.battery_level ?? null);
+            energyChart.data.datasets[1].data = history.map(item => item.power_pv ?? null);
+            energyChart.update();
+        }
+
+    } catch (error) {
+        console.error("Erreur historique :", error);
+    }
+}
 
 async function fetchDatabaseData() {
     if (!isOnline) return;
 
     try {
-        // On interroge l'URL magique de l'étudiant 4
         const response = await fetch('/api/latest');
 
         if (!response.ok) {
@@ -136,16 +297,13 @@ async function fetchDatabaseData() {
 
         const data = await response.json();
 
-        // 1. Mise à jour de ton capteur local DHT11
         tempEl.innerText = data.temperature_ext !== null ? Number(data.temperature_ext).toFixed(1) : "--";
         humEl.innerText = data.humidity_ext !== null ? Math.floor(data.humidity_ext) : "--";
 
-        // 2. Mise à jour de la Batterie
         if (data.battery_level !== null) {
-            updateBattery(Math.floor(data.battery_level));
+            updateBattery(Math.floor(data.battery_level), data.battery_alert);
         }
 
-        // 3. Mise à jour du Solaire
         updateSolar(
             data.voltage_pv || 0,
             data.current_pv || 0,
@@ -153,15 +311,12 @@ async function fetchDatabaseData() {
             data.luminosity || 0
         );
 
-        // Si on arrive ici, c'est qu'on a bien communiqué avec le serveur : on met à jour le Heartbeat
         lastHeartbeat = Date.now();
-
     } catch (error) {
         console.error("En attente de données capteurs...", error);
     }
 }
 
-// --- FONCTION WATCHDOG ---
 function checkSystemStatus() {
     if (Date.now() - lastHeartbeat > TIMEOUT_MS) {
         statusDot.className = "status-dot rounded-circle pulse-offline";
@@ -174,21 +329,6 @@ function checkSystemStatus() {
     }
 }
 
-// =================================================================
-// --- LANCEMENT DES BOUCLES ---
-// =================================================================
-
-// Météo Web (1 fois au lancement, puis toutes les 15 min)
-fetchRealWeather();
-setInterval(fetchRealWeather, 900000);
-
-// Base de données locale (toutes les 3 secondes)
-setInterval(fetchDatabaseData, 3000);
-
-// Watchdog (toutes les secondes)
-setInterval(checkSystemStatus, 1000);
-
-// Bouton de simulation de panne
 document.getElementById('btn-test').addEventListener('click', function () {
     isOnline = !isOnline;
     if (isOnline) {
@@ -199,4 +339,16 @@ document.getElementById('btn-test').addEventListener('click', function () {
         this.innerHTML = '<i class="bi bi-wifi"></i> Rétablir Connexion';
         this.classList.replace('btn-outline-danger', 'btn-outline-success');
     }
-});
\ No newline at end of file
+});
+
+createEnvChart();
+createEnergyChart();
+fetchRealWeather();
+fetchDatabaseData();
+fetchHistoryData();
+checkSystemStatus();
+
+setInterval(fetchRealWeather, 900000);
+setInterval(fetchDatabaseData, 3000);
+setInterval(fetchHistoryData, 5000);
+setInterval(checkSystemStatus, 1000);
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index c2749cb..e90d135 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -8,7 +8,6 @@
 
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.1/font/bootstrap-icons.css">
-
     <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
 </head>
 
@@ -22,8 +21,7 @@
             </span>
             <div
                 class="d-flex align-items-center bg-dark bg-opacity-50 px-3 py-2 rounded-pill border border-secondary border-opacity-25">
-                <span id="status-text" class="me-3 fw-semibold small text-uppercase tracking-wide">Système en
-                    ligne</span>
+                <span id="status-text" class="me-3 fw-semibold small text-uppercase tracking-wide">Système en ligne</span>
                 <div id="system-status" class="status-dot rounded-circle pulse-online"></div>
             </div>
         </div>
@@ -46,8 +44,7 @@
                                 <i id="api-icon" class="bi bi-brightness-high text-warning display-4 me-3"></i>
                                 <div class="text-start">
                                     <h3 class="mb-0 fw-bold data-value" id="api-temp">--°C</h3>
-                                    <small class="text-secondary text-uppercase fw-bold" id="api-desc">En
-                                        attente...</small>
+                                    <small class="text-secondary text-uppercase fw-bold" id="api-desc">En attente...</small>
                                 </div>
                             </div>
                         </div>
@@ -148,11 +145,10 @@
                         <div class="mt-4 text-center">
                             <div class="badge bg-dark border border-secondary text-secondary w-100 py-2"
                                 id="bat-alert-badge">
-                                <i class="bi bi-check-circle text-success" id="bat-alert-icon"></i> <span
-                                    id="bat-alert">Système Normal</span>
+                                <i class="bi bi-check-circle text-success" id="bat-alert-icon"></i>
+                                <span id="bat-alert">Système Normal</span>
                             </div>
                         </div>
-
                     </div>
                 </div>
             </div>
@@ -175,7 +171,32 @@
                                 <i class="bi bi-box-arrow-right me-2"></i>Déconnexion
                             </a>
                         </div>
+                    </div>
+                </div>
+            </div>
 
+            <div class="col-12 col-lg-6">
+                <div class="card rounded-3 shadow-sm border border-secondary border-opacity-25 h-100">
+                    <div class="card-body p-4">
+                        <h5 class="fw-bold mb-4 text-white">
+                            <i class="bi bi-graph-up-arrow me-2 text-white"></i>Historique environnement
+                        </h5>
+                        <div style="height: 340px;">
+                            <canvas id="envChart"></canvas>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <div class="col-12 col-lg-6">
+                <div class="card rounded-3 shadow-sm border border-secondary border-opacity-25 h-100">
+                    <div class="card-body p-4">
+                        <h5 class="fw-bold mb-4 text-white">
+                            <i class="bi bi-lightning-charge me-2 text-white"></i>Historique énergie
+                        </h5>
+                        <div style="height: 340px;">
+                            <canvas id="energyChart"></canvas>
+                        </div>
                     </div>
                 </div>
             </div>
@@ -183,6 +204,7 @@
         </div>
     </div>
 
+    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
     <script src="{{ url_for('static', filename='script.js') }}"></script>
 </body>