.whatsapp-sticky {
            position: fixed;
            left: 20px;
            bottom: 20px;
            width: 60px;
            height: 60px;
            background-color: #25d366;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
            z-index: 1000;
            transition: all 0.3s ease;
            animation: pulse 2s infinite;
        }
        .whatsapp-sticky:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
        }
        
        /* WhatsApp tooltip text */
        .whatsapp-tooltip {
            position: fixed;
            left: 90px;
            bottom: 30px;
            background-color: rgba(255, 255, 255, 0.9);
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 14px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            z-index: 999;
            opacity: 0;
            transform: translateX(-10px);
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .whatsapp-sticky:hover + .whatsapp-tooltip {
            opacity: 1;
            transform: translateX(0);
        }
        
        /* Pulsing animation for the WhatsApp icon */
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
            }
        }
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            .whatsapp-sticky {
                width: 50px;
                height: 50px;
                font-size: 24px;
                left: 15px;
                bottom: 15px;
            }
            .whatsapp-tooltip {
                left: 75px;
                bottom: 25px;
                font-size: 12px;
            }
        }