/* Estilos para el chat de WhatsApp */
        .whatsapp-chat {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1000;
            width: 350px;
            max-width: calc(100% - 60px); /* Responsive: no superar el ancho de pantalla */
            font-family: 'Poppins', sans-serif;
            display: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            border-radius: 10px;
        }
        
        .whatsapp-chat.active {
            display: block;
            animation: fadeInUp 0.3s ease;
        }
        
        .chat-header {
            background: linear-gradient(135deg, #25D366, #128C7E);
            color: white;
            padding: 15px;
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
            display: flex;
            align-items: center;
            cursor: pointer;
        }
        
        .chat-header i.fas {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        
        .chat-body {
            background: white;
            padding: 15px;
            border-left: 1px solid #ddd;
            border-right: 1px solid #ddd;
            max-height: 300px;
            overflow-y: auto;
        }
        
        .chat-footer {
            background: #f5f5f5;
            padding: 10px;
            border-bottom-left-radius: 10px;
            border-bottom-right-radius: 10px;
            border: 1px solid #ddd;
        }
        
        .whatsapp-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1001;
            width: 60px;
            height: 60px;
            background: #25D366;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .whatsapp-btn.hidden {
            transform: scale(0);
            opacity: 0;
            visibility: hidden;
        }
        
        .whatsapp-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
        }
        
        .whatsapp-btn i {
            font-size: 28px;
        }
        
        .form-control {
            border-radius: 20px;
            border: 1px solid #ddd;
            resize: none;
            min-height: 40px;
        }
        
        .btn-send {
            background: #25D366;
            color: white;
            border: none;
            border-radius: 20px;
            padding: 8px 15px;
            margin-left: 10px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        
        .btn-send:hover {
            background: #128C7E;
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Estilos responsive para móviles */
        @media (max-width: 576px) {
            .whatsapp-chat {
                width: 90%;
                right: 5%;
                bottom: 20px;
            }
            
            .whatsapp-btn {
                width: 50px;
                height: 50px;
                bottom: 20px;
                right: 20px;
            }
            
            .chat-header h5 {
                font-size: 1rem;
            }
            
            .chat-footer {
                padding: 8px;
            }
            
            .form-control {
                font-size: 14px;
            }
            
            .btn-send {
                padding: 6px 12px;
            }
        }