/* WhatsApp Float Button Styles */
        .whatsapp-float {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1000;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .whatsapp-button {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
            border-radius: 50%;
            box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
            text-decoration: none;
            transition: all 0.3s ease;
            animation: pulse 2s infinite;
        }

        .whatsapp-button:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 35px rgba(37, 211, 102, 0.6);
        }

        .whatsapp-button:active {
            transform: scale(0.95);
        }

        .whatsapp-icon {
            width: 32px;
            height: 32px;
            fill: white;
        }

        /* Tooltip */
        .whatsapp-tooltip {
            position: absolute;
            right: 70px;
            top: 50%;
            transform: translateY(-50%);
            background: #333;
            color: white;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .whatsapp-tooltip::after {
            content: '';
            position: absolute;
            left: 100%;
            top: 50%;
            transform: translateY(-50%);
            border: 6px solid transparent;
            border-left-color: #333;
        }

        .whatsapp-float:hover .whatsapp-tooltip {
            opacity: 1;
            visibility: visible;
            transform: translateY(-50%) translateX(-5px);
        }

        /* Pulse Animation */
        @keyframes pulse {
            0% {
                box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0.7);
            }
            70% {
                box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4), 0 0 0 10px rgba(37, 211, 102, 0);
            }
            100% {
                box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0);
            }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .whatsapp-float {
                bottom: 15px;
                right: 15px;
            }

            .whatsapp-button {
                width: 55px;
                height: 55px;
            }

            .whatsapp-icon {
                width: 28px;
                height: 28px;
            }

            .whatsapp-tooltip {
                display: none; /* Hide tooltip on mobile for better UX */
            }

            .demo-content {
                padding: 20px;
                margin-bottom: 80px;
            }
        }

        @media (max-width: 480px) {
            .whatsapp-float {
                bottom: 12px;
                right: 12px;
            }

            .whatsapp-button {
                width: 50px;
                height: 50px;
            }

            .whatsapp-icon {
                width: 26px;
                height: 26px;
            }
        }

        /* Accessibility */
        .whatsapp-button:focus {
            outline: 3px solid #25d366;
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {
            .whatsapp-button,
            .whatsapp-tooltip {
                transition: none;
            }
            
            .whatsapp-button {
                animation: none;
            }
        }