/* Стили только для плавающей кнопки WhatsApp */
        .whatsapp-float {
            position: fixed;
            bottom: 25px;
            right: 25px;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            text-decoration: none;
            box-shadow: 
                0 5px 15px rgba(37, 211, 102, 0.3),
                0 2px 5px rgba(0, 0, 0, 0.2);
            z-index: 9999;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            animation: float-pulse 3s ease-in-out infinite;
            border: 3px solid white;
        }

        .whatsapp-float:hover {
            transform: scale(1.15) rotate(10deg);
            box-shadow: 
                0 10px 25px rgba(37, 211, 102, 0.4),
                0 5px 10px rgba(0, 0, 0, 0.2);
            background: linear-gradient(135deg, #128C7E 0%, #075E54 100%);
        }

        .whatsapp-float:active {
            transform: scale(0.95);
            box-shadow: 
                0 3px 10px rgba(37, 211, 102, 0.3),
                0 1px 3px rgba(0, 0, 0, 0.2);
        }

        /* Текстовая подсказка при наведении */
        .whatsapp-float::after {
            content: 'Pišite nam na WhatsApp';
            position: absolute;
            right: 70px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 8px 15px;
            border-radius: 8px;
            font-size: 0.85rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            pointer-events: none;
            font-weight: 500;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
        }

        .whatsapp-float:hover::after {
            opacity: 1;
            visibility: visible;
            right: 75px;
        }

        /* Анимация пульсации */
        @keyframes float-pulse {
            0%, 100% {
                transform: translateY(0);
                box-shadow: 
                    0 5px 15px rgba(37, 211, 102, 0.3),
                    0 2px 5px rgba(0, 0, 0, 0.2);
            }
            50% {
                transform: translateY(-10px);
                box-shadow: 
                    0 10px 25px rgba(37, 211, 102, 0.4),
                    0 5px 10px rgba(0, 0, 0, 0.2);
            }
        }

        /* Адаптивность для мобильных устройств */
        @media (max-width: 768px) {
            .whatsapp-float {
                width: 55px;
                height: 55px;
                font-size: 1.8rem;
                bottom: 20px;
                right: 20px;
            }
            
            .whatsapp-float::after {
                font-size: 0.8rem;
                padding: 7px 12px;
                right: 65px;
            }
            
            .whatsapp-float:hover::after {
                right: 70px;
            }
        }

        @media (max-width: 480px) {
            .whatsapp-float {
                width: 50px;
                height: 50px;
                font-size: 1.6rem;
                bottom: 15px;
                right: 15px;
                border-width: 2px;
            }
            
            .whatsapp-float::after {
                display: none; /* На очень маленьких экранах скрываем текст */
            }
            
            .whatsapp-float:hover {
                transform: scale(1.1);
            }
        }

        /* Стили для демонстрационного контента */
        .demo-content {
            padding: 60px 20px;
            background-color: #f8f9fa;
            min-height: 100vh;
        }
        
        .demo-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .demo-content h1 {
            color: #1a2a3a;
            margin-bottom: 20px;
        }
        
        .demo-content p {
            color: #555;
            line-height: 1.6;
            margin-bottom: 20px;
        }
        
        .demo-box {
            background: white;
            border-radius: 10px;
            padding: 30px;
            margin-top: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }