.folder-gallery {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    padding: 20px 0;
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-item {
    position: relative; /* REQUIRED for overlay */
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 280px; /* Fixed square height */
    display: flex;
    flex-direction: column;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: 8px;
}

/* FILENAME OVERLAY ON IMAGE */
.image-filename {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8)); /* Dark overlay */
    color: #fff !important;
    padding: 20px 12px 15px;
    font-size: 12px;
    font-weight: 700;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.2;
    border-radius: 0 0 8px 8px;
    backdrop-filter: blur(5px);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

/* RESPONSIVE */
@media (max-width: 1200px) {
    .folder-gallery { grid-template-columns: repeat(4, 1fr); gap: 12px; max-width: 1100px; }
    .gallery-item { height: 260px; }
}

@media (max-width: 992px) {
    .gallery-gallery { grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 900px; }
    .gallery-item { height: 240px; }
    .image-filename { font-size: 11px; padding: 18px 10px 12px; }
}

@media (max-width: 768px) {
    .folder-gallery { grid-template-columns: repeat(2, 1fr); gap: 12px; max-width: 600px; }
    .gallery-item { height: 220px; }
    .image-filename { font-size: 10px; padding: 15px 8px 12px; }
}

@media (max-width: 480px) {
    .folder-gallery { grid-template-columns: 1fr; gap: 15px; max-width: 350px; }
    .gallery-item { height: 350px; }
    .image-filename { 
        font-size: 13px; 
        padding: 25px 15px 20px;
        letter-spacing: 1.2px;
    }
}