/* Extrait de access/pageprotegee.php */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .container {
            background: white;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            padding: 60px 40px;
            max-width: 500px;
            width: 100%;
            text-align: center;
            animation: fadeIn 0.6s ease-out;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .logo-container {
            margin-bottom: 40px;
        }

        .logo-container img {
            max-width: 100%;
            width: 100%;
            height: auto;
        }

        .icon-container {
            margin-bottom: 30px;
        }

        .lock-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto;
            background: #f8f9fa;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .lock-icon svg {
            width: 40px;
            height: 40px;
            fill: #dc3545;
        }

        h1 {
            color: #212529;
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 15px;
            letter-spacing: -0.5px;
        }

        .message {
            color: #6c757d;
            font-size: 16px;
            line-height: 1.6;
            margin-bottom: 30px;
        }

        .error-code {
            display: inline-block;
            background: #f8f9fa;
            color: #495057;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            margin-top: 10px;
        }

        .back-button {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-decoration: none;
            padding: 12px 32px;
            border-radius: 6px;
            font-weight: 500;
            font-size: 15px;
            transition: transform 0.2s, box-shadow 0.2s;
            margin-top: 20px;
        }

        .back-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        @media (max-width: 576px) {
            .container {
                padding: 40px 30px;
            }

            h1 {
                font-size: 24px;
            }

            .message {
                font-size: 15px;
            }
        }