body {
    font-family: 'Open Sans', sans-serif;
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
}

/* Custom underline for the main heading */
header h1::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px; /* Slightly wider */
    height: 5px; /* Slightly thicker */
    background-color: var(--bs-primary); /* Use Bootstrap primary color */
    border-radius: 2px;
}

/* Specific styling for social icons to add a subtle pulse animation */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.social-links .btn {
    animation: pulse 2s infinite ease-in-out;
}

/* Ensure the body takes up full viewport height and centers content */
body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
    background-color: #f8f9fa; /* Lighter background for the body */
}

/* Container styling, adjusted for Bootstrap classes */
.container {
    max-width: 800px;
    /* Already has bg-white, rounded-4, shadow-lg, p-4/p-md-5 from Bootstrap */
}

/* Adjust font sizes on smaller screens if needed, though Bootstrap handles much of this */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5em; /* Smaller on mobile */
    }
    header h3 {
        font-size: 1.2em;
    }
    .features h2, .contact h2 {
        font-size: 1.8em;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 2em;
    }
    header h3 {
        font-size: 1em;
    }
    .features h2, .contact h2 {
        font-size: 1.5em;
    }
    .social-links a {
        font-size: 1.2em;
        width: 40px;
        height: 40px;
        line-height: 40px;
    }
}