* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    min-height: 101vh; /* Force scrollbar to appear */
}

header {
    background-color: #fff;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 500;
}

.gallery {
    max-width: 1200px;
    margin: 2rem auto 4rem; /* Added bottom margin to ensure there's always scroll space */
    padding: 0 1rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.image-container {
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
    aspect-ratio: 1;
}

.image-container:hover {
    transform: translateY(-2px);
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.loading {
    text-align: center;
    padding: 2rem;
    font-size: 1.2rem;
    color: #666;
    display: none;
    grid-column: 1 / -1;
}

.loading.visible {
    display: block;
}