body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url('https://source.unsplash.com/random/1920x1080') no-repeat center center fixed;
    background-size: cover;
    overflow: hidden;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* Faded overlay */
    z-index: 1;
}

.container {
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 20px;
}

h1 {
    font-size: 10vw; /* Scales with viewport width for mobile */
    font-family: 'Arial', sans-serif;
    color: #fff;
    text-shadow: 3px 3px 10px rgba(255, 215, 0, 0.8);
    margin-bottom: 40px;
    font-weight: bold;
    line-height: 1.2;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #25D366;
    color: white;
    padding: 15px 25px;
    font-size: clamp(16px, 4vw, 20px); /* Responsive font size */
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s ease;
    max-width: 300px;
    margin: 0 auto;
}

.whatsapp-btn img {
    width: clamp(25px, 6vw, 30px); /* Responsive icon size */
    margin-right: 10px;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    h1 {
        font-size: 12vw; /* Larger on smaller screens */
        margin-bottom: 30px;
    }
    .whatsapp-btn {
        padding: 12px 20px;
        max-width: 80%; /* Prevents overflow on small screens */
    }
}