.art-gallery {
    width: 90%;
    margin: 0 auto;
}

/* Section titles */
.art-gallery h1 {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 20px;
}

/* Sketch gallery grid */
.imgCol,
.gallery.watercolors {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 columns */
    gap: 20px; /* spacing between images */
     place-items: center;
}

/* Images styling */
.sketch-img,
.watercolor-img {
    width: 100%;
    height: auto;
    display: inline;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    object-fit: cover;
}

/* PDF container */
.pdf-container {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

@media (max-width: 1024px) {
    .pdf-container embed {
        height: 700px; /* smaller height for tablets */
    }
}

@media (max-width: 600px) {
    .imgCol,
    .gallery.watercolors {
        grid-template-columns: 1fr; /* single column on mobile */
    }
    .pdf-container embed {
        height: 500px; /* mobile height */
    }
}