body {
    padding-top: 25px;
    display: block;
    margin: auto;
    width: 549px;
}

div {
    box-sizing: border-box;
}

.back-home {
    margin: auto;
    text-align: center;
}

.back-home a {
    color: var(--darkbrown);
    text-decoration: none;
    -webkit-transition: 0.25s;
}

.back-home a:hover {
    letter-spacing: 2px;
    -webkit-transition: 0.25s;
}

.exhibition-container {
    padding-top: 20px;
    width: 549px;
}

.exhibition-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 10px 0;
    border-bottom: 1px dotted var(--darkbrown);
    margin-bottom: 10px;
}

.exhibition-nav.bottom-nav {
    border-bottom: none;
    border-top: 1px dotted var(--darkbrown);
    margin-top: 10px;
    margin-bottom: 0;
}

.nav-btn {
    background: var(--white);
    border: 1px dotted var(--darkbrown);
    color: var(--darkbrown);
    padding: 5px 15px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    transition: 0.25s;
}

.nav-btn:hover:not(:disabled) {
    background: var(--darkbrown);
    color: var(--white);
}

.nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-info {
    font-size: 12px;
    color: var(--darkbrown);
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.gallery-item {
    margin: 3px;
    width: 177px;
    height: 177px;
    overflow: hidden;
    border: 1px dotted var(--darkbrown);
    cursor: pointer;
    transition: 0.25s;
}

.gallery-item:hover {
    border-color: var(--darkbrown);
    box-shadow: 0 0 0 1px var(--darkbrown);
}

.gallery-thumb {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.25s;
}

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

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(25, 5, 3, 0.95);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border: 3px solid var(--white);
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 30px;
    background: none;
    border: none;
    color: var(--white);
    font-size: 40px;
    cursor: pointer;
    z-index: 1001;
    transition: 0.25s;
}

.lightbox-close:hover {
    transform: scale(1.2);
}

.lightbox-prev,
.lightbox-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--white);
    color: var(--white);
    font-size: 24px;
    padding: 15px 20px;
    cursor: pointer;
    transition: 0.25s;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--white);
    color: var(--darkbrown);
}

.lightbox-counter {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 14px;
    background: rgba(25, 5, 3, 0.8);
    padding: 8px 16px;
    border: 1px dotted var(--white);
}

/* Responsive */
@media (max-width: 600px) {
    body {
        width: 100%;
        padding: 15px;
    }
    
    .exhibition-container {
        width: 100%;
    }
    
    .gallery-item {
        width: calc(33.333% - 6px);
        height: auto;
        aspect-ratio: 1;
    }
    
    .gallery-thumb {
        height: 100%;
    }
    
    .lightbox-prev,
    .lightbox-next {
        padding: 10px 15px;
        font-size: 18px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
}

/* Fix: Override global mix-blend-mode for lightbox images */
#lightbox-img {
    mix-blend-mode: normal;
}