.page-header {
    height: 40vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../images/gallery-header.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-bg);
    margin-top: 80px;
}

.header-content h1 {
    font-size: 3rem;
    color: var(--light-bg);
    margin-bottom: 1rem;
}

/* Gallery Section */
.gallery-section {
    padding: 5rem 0;
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    background: #f0f0f0;
    color: var(--text-color);
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--light-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
    height: 300px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    padding: 2rem;
    color: var(--light-bg);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.gallery-item:hover .item-overlay {
    opacity: 1;
    transform: translateY(0);
}

.item-overlay h3 {
    margin-bottom: 0.5rem;
    color: var(--light-bg);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1100;
}

.lightbox.active {
    display: flex;
}

.lightbox-image {
    max-width: 90%;
    max-height: 80vh;
    object-fit: contain;
}

.close-lightbox {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--light-bg);
    font-size: 2rem;
    cursor: pointer;
    z-index: 1101;
}

.lightbox-caption {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--light-bg);
    padding: 1rem;
    background: rgba(0,0,0,0.5);
}

.prev-btn,
.next-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    border: none;
    color: var(--light-bg);
    padding: 1rem;
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition);
}

.prev-btn:hover,
.next-btn:hover {
    background: rgba(255,255,255,0.2);
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* Animation Classes */
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        height: 30vh;
    }

    .header-content h1 {
        font-size: 2.5rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }

    .gallery-item {
        height: 250px;
    }

    .filter-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .prev-btn,
    .next-btn {
        padding: 0.8rem;
    }
}