body {
    font-family: Arial, sans-serif;
    background: #111;
    margin: 0;
    padding: 20px;
}

/* Grid */
.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.gallery img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    cursor: pointer;
    border-radius: 8px;
    transition: 0.3s;
}

.gallery img:hover {
    transform: scale(1.05);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 999;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
}

.modal-content {
    display: block;
    margin: auto;
    max-width: 80%;
    max-height: 80%;
}

.close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: white;
    font-size: 40px;
    cursor: pointer;
}

/* Arrows */
.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    color: white;
    font-size: 40px;
    padding: 10px;
    user-select: none;
}

.prev { left: 20px; }
.next { right: 20px; }

.prev:hover, .next:hover {
    color: #ccc;
}