.header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
}

.nav {
    position: absolute;
    left: 20px;
}

.nav,
.nav-icon {
    width: clamp(32px, 5vw, 64px);
    height: auto;

}

.logo {
    width: clamp(200px, 25vw, 1000px);
    height: auto;
}

.portfolio-container {
    max-width: 750px;
    margin: 0 auto;
    padding: 2rem;
}

.portfolio-subject {
    margin-bottom: 4rem;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.image-item {
    overflow: hidden;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-item.landscape {
    grid-column: span 2;
}

.image-item.portrait {
    grid-column: span 1;
}

@media (max-width: 600px) {
    .portfolio-container {
        padding: 1rem;
    }

    .image-grid {
        gap: 10px;
    }
}

@media (max-width: 350px) {
    .image-grid {
        grid-template-columns: 1fr;
    }
}