body {
            font-family: 'Roboto', sans-serif;
            margin: 0;
            padding: 0;
        }
        .chat-widget {
            position: fixed;
            bottom: 70px;
            right: 10px;
            width: 300px;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 40px rgba(0,0,0,0.16);
            display: none;
            transition: all 0.3s ease;
        }
        .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: 15px;
            object-fit: cover;
        }
        .user-info {
            flex-grow: 1;
        }
        .user-name {
            font-weight: 500;
            font-size: 16px;
            margin-bottom: 2px;
        }
        .user-status {
            font-size: 12px;
            opacity: 0.8;
        }
        .chat-body {
            background-color: #E5DDD5;
            padding: 15px;
            height: 150px;
            overflow-y: auto;
        }
        .message {
            background-color: white;
            padding: 10px 15px;
            border-radius: 7px;
            margin-bottom: 10px;
            max-width: 80%;
            box-shadow: 0 1px 2px rgba(0,0,0,0.1);
        }
        .chat-footer {
            background-color: #F0F0F0;
            padding: 15px;
            text-align: center;
        }
        .whatsapp-button {
            background-color: #25D366;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: background-color 0.3s ease;
        }
        .whatsapp-button:hover {
            background-color: #128C7E;
        }
        .whatsapp-icon {
            position: fixed;
            bottom: 70px;
            right: 15px;
            background-color: #25D366;
            color: white;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(0,0,0,0.15);
            transition: all 0.3s ease;
        }
        .whatsapp-icon:hover {
            transform: scale(1.1);
        }