/* Floating WhatsApp button styling */
        .whatsapp-float {
            position: fixed;
            width: 60px;
            height: 60px;
            bottom: 40px;
            right: 80px;
            background-color: #25D366;
            color: #FFF;
            border-radius: 50px;
            text-align: center;
            font-size: 30px;
            box-shadow: 2px 2px 3px #999;
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.4s;
        }
        .whatsapp-float:hover {
            background-color: #128C7E;
            transform: scale(1.1);
        }
        
        /* Popup chat window */
        .whatsapp-chat-window {
            position: fixed;
            width: 350px;
            height: 450px;
            bottom: 100px;
            right: 40px;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            z-index: 101;
            display: none;
            flex-direction: column;
            overflow: hidden;
        }
        .chat-header {
            background-color: #075E54;
            color: white;
            padding: 15px;
            display: flex;
            align-items: center;
        }
        .chat-header img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-right: 10px;
        }
        .chat-header h3 {
            margin: 0;
            font-size: 16px;
        }
        .chat-header p {
            margin: 0;
            font-size: 12px;
            opacity: 0.8;
        }
        .chat-body {
            flex: 1;
            padding: 15px;
            overflow-y: auto;
            background-color: #e5ddd5;
            background-image: url('https://web.whatsapp.com/img/bg-chat-tile-light_a4be512e7195b6b733d9110b408f075d.png');
            background-repeat: repeat;
        }
        .chat-footer {
            padding: 10px;
            background-color: #f0f0f0;
            display: flex;
        }
        .chat-footer input {
            flex: 1;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 20px;
            outline: none;
        }
        .chat-footer button {
            background-color: #25D366;
            color: white;
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            margin-left: 10px;
            cursor: pointer;
        }
        .close-chat {
            position: absolute;
            top: 10px;
            right: 10px;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        
        /* Message bubbles */
        .message {
            max-width: 70%;
            margin-bottom: 15px;
            padding: 8px 12px;
            border-radius: 7.5px;
            position: relative;
        }
        .received {
            background-color: white;
            align-self: flex-start;
        }
        .sent {
            background-color: #DCF8C6;
            align-self: flex-end;
            margin-left: auto;