.galeria-flash {
    display: grid;
    gap: 15px;
    margin: 20px 0;
}

.galeria-flash-columnas-1 {
    grid-template-columns: 1fr;
}

.galeria-flash-columnas-2 {
    grid-template-columns: repeat(2, 1fr);
}

.galeria-flash-columnas-3 {
    grid-template-columns: repeat(3, 1fr);
}

.galeria-flash-item {
    position: relative;
    overflow: hidden;
    border-radius: 6px;
    background: #f5f5f5;
}

.galeria-flash-item a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.galeria-flash-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.galeria-flash-item:hover img {
    transform: scale(1.03);
}

.galeria-flash-titulo {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    padding: 8px 10px;
    font-size: 14px;
    line-height: 1.3;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.galeria-flash-item:hover .galeria-flash-titulo {
    opacity: 1;
}

/* Responsivo: en móviles, siempre 1 columna. */
@media (max-width: 600px) {
    .galeria-flash-columnas-2,
    .galeria-flash-columnas-3 {
        grid-template-columns: 1fr;
    }
}