.projects-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.projects-hero .hero-content {
    max-width: 800px;
    padding: 0 2rem;
}

.projects-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.projects-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.gallery-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding: 0 1rem;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    background: var(--light-gray);
    color: var(--dark-blue);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--dark-blue);
    color: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
    aspect-ratio: 3/2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.gallery-item .item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    padding: 1rem;
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

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

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    padding: 2rem;
}

.lightbox.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.close-lightbox {
    position: absolute;
    top: 1rem;
    right: 2rem;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

.lightbox-caption {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    text-align: center;
    color: white;
    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: white;
    padding: 1rem;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.3s ease;
}

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

.prev-btn {
    left: 2rem;
}

.next-btn {
    right: 2rem;
}

@media (max-width: 768px) {
    .projects-hero h1 {
        font-size: 2.5rem;
    }

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

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

[data-hidden] {
    display: none !important;
}