.demo-container-not {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .demo-container-not h1 {
            color: white;
            margin-bottom: 30px;
            font-size: 2rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }

        .demo-buttons-not {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .demo-btn-not {
            padding: 12px 24px;
            border: none;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .demo-btn-not.success-not {
            background: linear-gradient(45deg, #4CAF50, #45a049);
            color: white;
        }

        .demo-btn-not.error-not {
            background: linear-gradient(45deg, #f44336, #d32f2f);
            color: white;
        }

        .demo-btn-not.warning-not {
            background: linear-gradient(45deg, #ff9800, #f57c00);
            color: white;
        }

        .demo-btn-not.info-not {
            background: linear-gradient(45deg, #2196F3, #1976D2);
            color: white;
        }

        .demo-btn-not:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

        /* Overlay pour les popups */
        .popup-overlay-not {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .popup-overlay-not.show-not {
            opacity: 1;
            visibility: visible;
        }

        /* Container de la popup */
        .popup-not {
            background: white;
            border-radius: 20px;
            padding: 30px;
            min-width: 350px;
            max-width: 90vw;
            text-align: center;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            transform: scale(0.7) translateY(50px);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .popup-overlay-not.show-not .popup-not {
            transform: scale(1) translateY(0);
        }

        /* Icône animée */
        .popup-icon-not {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            animation: iconPulse 0.6s ease-out;
            position: relative;
        }

        .popup-icon-not::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            animation: ripple 0.8s ease-out;
        }

        .popup-icon-not.success-not {
            background: linear-gradient(45deg, #4CAF50, #45a049);
            color: white;
        }

        .popup-icon-not.error-not {
            background: linear-gradient(45deg, #f44336, #d32f2f);
            color: white;
        }

        .popup-icon-not.warning-not {
            background: linear-gradient(45deg, #ff9800, #f57c00);
            color: white;
        }

        .popup-icon-not.info-not {
            background: linear-gradient(45deg, #2196F3, #1976D2);
            color: white;
        }

        .popup-icon-not.success-not::before {
            border: 3px solid #4CAF50;
        }

        .popup-icon-not.error-not::before {
            border: 3px solid #f44336;
        }

        .popup-icon-not.warning-not::before {
            border: 3px solid #ff9800;
        }

        .popup-icon-not.info-not::before {
            border: 3px solid #2196F3;
        }

        /* Titre et message */
        .popup-title-not {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #333;
        }

        .popup-message-not {
            font-size: 16px;
            color: #666;
            line-height: 1.5;
            margin-bottom: 30px;
        }

        /* Bouton de fermeture */
        .popup-close-not {
            background: linear-gradient(45deg, #667eea, #764ba2);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .popup-close-not:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
        }

        /* Bouton X en haut à droite */
        .popup-close-x-not {
            position: absolute;
            top: 15px;
            right: 15px;
            background: none;
            border: none;
            font-size: 24px;
            color: #ccc;
            cursor: pointer;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
        }

        .popup-close-x-not:hover {
            background: rgba(0, 0, 0, 0.1);
            color: #666;
        }

        /* Animations */
        @keyframes iconPulse {
            0% {
                transform: scale(0);
                opacity: 0;
            }
            50% {
                transform: scale(1.1);
            }
            100% {
                transform: scale(1);
                opacity: 1;
            }
        }

        @keyframes ripple {

            0% {
                transform: scale(1);
                opacity: 0.6;
            }
            100% {
                transform: scale(1.5);
                opacity: 0;
            }
        }

        /* Animation d'apparition du container de notification (coin) */
        .notification-container-not {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1001;
        }

        .notification-not {
            background: white;
            border-radius: 15px;
            padding: 20px;
            margin-bottom: 15px;
            min-width: 300px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transform: translateX(400px);
            opacity: 0;
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            border-left: 5px solid;
            position: relative;
            overflow: hidden;
            margin: 0px 20px 0px 0px; 
        }

        .notification-not.show-not {
            transform: translateX(0);
            opacity: 1;
        }

        .notification-not.success-not {
            border-left-color: #4CAF50;
        }

        .notification-not.error-not {
            border-left-color: #f44336;
        }

        .notification-not.warning-not {
            border-left-color: #ff9800;
        }

        .notification-not.info-not {
            border-left-color: #2196F3;
        }

        .notification-content-not {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .notification-icon-not {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: white;
            flex-shrink: 0;
        }

        .notification-text-not {
            flex: 1;
        }

        .notification-title-not {
            font-weight: 600;
            color: #333;
            margin-bottom: 5px;
        }

        .notification-message-not {
            font-size: 14px;
            color: #666;
        }

        .notification-close-not {
            position: absolute;
            top: 10px;
            right: 10px;
            background: none;
            border: none;
            color: #ccc;
            cursor: pointer;
            font-size: 16px;
        }

        .notification-close-not:hover {
            color: #666;
        }

        /* Progress bar pour auto-close */
        .notification-progress-not {
            position: absolute;
            bottom: 0;
            left: 0;
            height: 3px;
            background: rgba(0, 0, 0, 0.1);
            transition: width 3s linear;
        }

        .notification-progress-not.active-not {
            width: 0;
        }

        @media (max-width: 480px) {
            .demo-container-not {
                padding: 20px;
            }
            
            .demo-buttons-not {
                flex-direction: column;
                align-items: center;
            }
            
            .popup-not {
                min-width: auto;
                margin: 20px;
            }
            
            .notification-not {
                min-width: auto;
                margin: 0 20px 15px 20px;
            }
        }