diff --git a/index.html b/index.html
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+<!DOCTYPE html>
+<html lang="fr">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Maintenance en cours</title>
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
+
+        body {
+            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            min-height: 100vh;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            color: #fff;
+            padding: 20px;
+        }
+
+        .container {
+            text-align: center;
+            max-width: 600px;
+            background: rgba(255, 255, 255, 0.1);
+            backdrop-filter: blur(10px);
+            border-radius: 20px;
+            padding: 50px 40px;
+            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
+            border: 1px solid rgba(255, 255, 255, 0.2);
+        }
+
+        .icon {
+            font-size: 80px;
+            margin-bottom: 30px;
+            animation: pulse 2s infinite;
+        }
+
+        @keyframes pulse {
+            0%, 100% {
+                transform: scale(1);
+                opacity: 1;
+            }
+            50% {
+                transform: scale(1.1);
+                opacity: 0.8;
+            }
+        }
+
+        h1 {
+            font-size: 2.5em;
+            margin-bottom: 20px;
+            font-weight: 700;
+        }
+
+        p {
+            font-size: 1.2em;
+            margin-bottom: 30px;
+            line-height: 1.6;
+            color: rgba(255, 255, 255, 0.9);
+        }
+
+        .time-box {
+            background: rgba(255, 255, 255, 0.15);
+            border-radius: 15px;
+            padding: 25px;
+            margin: 30px 0;
+            border: 1px solid rgba(255, 255, 255, 0.3);
+        }
+
+        .time-label {
+            font-size: 0.9em;
+            text-transform: uppercase;
+            letter-spacing: 2px;
+            margin-bottom: 10px;
+            opacity: 0.8;
+        }
+
+        .time {
+            font-size: 3em;
+            font-weight: bold;
+            color: #fff;
+            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
+        }
+
+        .footer {
+            margin-top: 30px;
+            font-size: 0.9em;
+            opacity: 0.8;
+        }
+
+        .loader {
+            display: inline-block;
+            width: 50px;
+            height: 50px;
+            border: 4px solid rgba(255, 255, 255, 0.3);
+            border-top: 4px solid #fff;
+            border-radius: 50%;
+            animation: spin 1s linear infinite;
+            margin-top: 20px;
+        }
+
+        @keyframes spin {
+            0% { transform: rotate(0deg); }
+            100% { transform: rotate(360deg); }
+        }
+
+        @media (max-width: 600px) {
+            h1 {
+                font-size: 2em;
+            }
+            .time {
+                font-size: 2.5em;
+            }
+            .container {
+                padding: 40px 30px;
+            }
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="icon">🔧</div>
+        <h1>Maintenance en cours</h1>
+        <p>Nerosys est actuellement en maintenance pour vous offrir une meilleure expérience.</p>
+        
+        <div class="time-box">
+            <div class="time-label">Retour prévu à</div>
+            <div class="time">19h00</div>
+        </div>
+
+        <div class="loader"></div>
+
+        <div class="footer">
+            <p>Merci de votre patience et de votre compréhension.</p>
+        </div>
+    </div>
+</body>
+</html>
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