/* Fondo oscuro */
.popup-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    overflow-y: auto;
    padding: 20px;
}

/* Caja del popup */
.popup-content {
    background: transparent;
    width: auto;
    max-width: 90%;
    margin: 5% auto;
    position: relative;
    text-align: center;
}

/* Imagen responsive */
.popup-img {
    width: 100%;
    height: auto;
    max-height: 80vh;
    border-radius: 10px;
    object-fit: contain;
}

/* Botón de cerrar */
.popup-close {
    position: absolute;
    top: -15px; right: -15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #fff;
    background: #000;
    border-radius: 50%;
    width: 32px; height: 32px;
    line-height: 28px;
    text-align: center;
}

/* Ajustes móviles */
@media (max-width: 600px) {
    .popup-content {
        width: 100%;
        margin: 10% auto;
        padding: 0;
    }
    .popup-close {
        font-size: 24px;
        top: -10px;
        right: -10px;
    }
}