.whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s;
    z-index: 1000;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.whatsapp-icon {
    width: 35px;
    height: 35px;
    fill: white;
}

/* Demo styling - just for preview purposes */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f5f5f5;
    min-height: 100vh;
}

.demo-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
}

/* Responsive styles for mobile devices */
@media only screen and (max-width: 768px) {
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        bottom: 15px;
        right: 15px;
    }
    
    .whatsapp-icon {
        width: 28px;
        height: 28px;
    }
    
    .demo-content {
        max-width: 100%;
        padding: 15px;
        margin: 10px;
        border-radius: 6px;
    }
}

/* For very small screens */
@media only screen and (max-width: 480px) {
    .whatsapp-btn {
        width: 45px;
        height: 45px;
        bottom: 10px;
        right: 10px;
    }
    
    .whatsapp-icon {
        width: 25px;
        height: 25px;
    }
}