/* Gallery Hero Section */
.gallery-hero {
    background: linear-gradient(135deg, rgba(6, 28, 59, 0.95) 0%, rgba(14, 58, 117, 0.92) 60%, rgba(18, 97, 160, 0.88) 100%), url('../images/assembly-ground.jpg');
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 85px 20px 75px;
    margin-top: 0;
    position: relative;
}

.gallery-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.2rem;
    font-weight: 900;
    letter-spacing: -1px;
    animation: fadeInDown 1s ease;
}

.gallery-hero p {
    font-size: 1.25rem;
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
    color: #e2e8f0;
    animation: fadeInUp 1s ease;
}

/* Gallery Filter Section */
.gallery-filter {
    padding: 35px 0 25px;
    background-color: var(--white);
    position: relative;
    z-index: 2;
    margin-top: 0;
    border-bottom: 1px solid var(--line);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.filter-btn {
    padding: 10px 25px;
    border: none;
    background-color: var(--light-gray);
    color: var(--text-color);
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Gallery Grid Section */
.gallery-grid {
    padding: 40px 0 80px;
    background-color: var(--white);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    height: 300px;
    transform: translateY(30px);
    opacity: 0;
    animation: fadeInUp 0.8s forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.grid-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.2) 60%, rgba(0, 0, 0, 0) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 25px;
    opacity: 0;
    transition: var(--transition);
}

.grid-item:hover .overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: var(--white);
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 0 15px;
    width: 100%;
}

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

.overlay-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.overlay-content p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Custom Lightbox Styles */
.lb-outerContainer {
    border-radius: 10px !important;
    box-shadow: var(--shadow-lg) !important;
}

.lb-image {
    border-radius: 8px !important;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .gallery-hero h1 {
        font-size: 3rem;
    }
    
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .gallery-hero {
        padding: 60px 16px 45px;
    }

    .gallery-hero h1 {
        font-size: 2.3rem;
    }

    .gallery-hero p {
        font-size: 1.05rem;
    }

    .filter-buttons {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    .grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .grid-item {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .gallery-hero {
        padding: 45px 14px 35px;
    }

    .gallery-hero h1 {
        font-size: 1.85rem;
    }
    
    .gallery-hero p {
        font-size: 0.95rem;
    }
    
    .filter-btn {
        padding: 7px 15px;
        font-size: 0.8rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .grid-item {
        height: 220px;
    }
    
    .overlay-content h3 {
        font-size: 1.3rem;
    }
}