body {
    font-family: Arial, sans-serif;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
}

.category {
    margin-top: 40px;
}

.category h2 {
    border-bottom: 2px solid #ccc;
    padding-bottom: 5px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.grid-item {
    position: relative;
    cursor: pointer;
}

.grid-item img {
    width: 100%;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.number {
    position: absolute;
    bottom: 6px;
    right: 6px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 12px;
}

/* Lightbox */
#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    justify-content: center;
    align-items: center;
}

#lightbox img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
}

#lightbox.hidden {
    display: none;
}

#lightbox-close {
    position: fixed;
    top: 20px;
    right: 40px;
    font-size: 40px;
    color: white;
    cursor: pointer;
}