body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #93a790;
}

header {
    background-color: #d8f4d3;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

nav {
    flex: 0 0 auto;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: red;
    text-decoration: none;
    font-family: Arial, sans-serif;
    font-size: 1.2rem;
}

.folder-selector {
    flex: 0 0 auto;
    text-align: right;
}

.folder-selector select {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    cursor: pointer;
    border-radius: 5px;
    transition: transform 0.2s;
}

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

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.lightbox img {
    max-width: 90%;
    max-height: 80%;
    border-radius: 5px;
}

.close, .prev, .next {
    position: absolute;
    color: white;
    font-size: 30px;
    cursor: pointer;
    user-select: none;
}

.close {
    top: 20px;
    right: 30px;
}

.prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}