.gku-container {
    text-align: center;
    /* max-width: 1100px; */
    margin: auto;
    padding: 20px;
}

.gku-title {
    font-size: 36px;
    color: #1c2c50;
    text-align: center;
}

.gku-filter-wrapper {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    justify-content: center;
}

/* .gku-filter-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #1c2c50;
    border-bottom: 2px solid transparent;
    padding: 5px 10px;
} 

.gku-filter-btn:hover,
.gku-filter-btn.gku-active {
    border-color: #1c2c50;
    opacity: 1;
}
*/

.gku-filter-btn {
    background-color: #f0f0f0;
    border: 2px solid transparent;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #1c2c50;
    font-weight: 500;
}

.gku-filter-btn:hover {
    background-color: #1c2c50;
    color: white;
    border-color: #1c2c50;
}

.gku-filter-btn.gku-active {
    background-color: #1c2c50;
    color: white;
    border-color: #1c2c50;
}

.gku-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 5px;
    justify-content: center;
}

.gku-item {
    background-color: #fff;
    padding: 5px;
    border-radius: 5px;
    text-align: center;
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.3s ease, transform 0.3s ease;
    width: 100%;
}

.gku-item.gku-hide {
    display: none !important;
}

.gku-item img {
    width: 100%;
    height: 100%;
    border-radius: 5px;
    cursor: pointer;
}

.gku-caption {
    margin-top: 10px;
    font-size: 14px;
    color: #333;
}

/* Modal */
.gku-modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
}

.gku-modal-content {
    max-width: 90%;
    max-height: 80vh;
}

#gku-modal-caption {
    color: #fff;
    text-align: center;
    margin-top: 10px;
}

.gku-close {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 40px;
    color: white;
    cursor: pointer;
}

@media (max-width: 600px) {
    .gku-container {
        padding: 10px;
    }

    .gku-title {
        font-size: 28px;
    }

    .gku-filter-wrapper {
        flex-wrap: wrap;
        gap: 8px;
    }

    .gku-filter-btn {
        font-size: 14px;
        padding: 4px 8px;
    }

    .gku-caption {
        font-size: 12px;
    }
}