.modal .slider{
    position: absolute;
    inset: 0;
}

.modal .slider__viewport{
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.modal .slider__imgwrap{
    position: absolute;
    inset: 0;          /* wypełnia cały viewport */
    background: #fff;  /* białe tło */
}

.modal .slider__imgwrap::before,
.modal .slider__imgwrap::after{
    content: none;
}

/* przód: obraz zawsze w całości (contain) */
.modal .slider__img{
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    object-position: center !important;
    display: block;
    z-index: 1;
    opacity: 1;
    transition: opacity .22s ease;
}

.modal .slider__img.is-fading{ opacity: 0; }

/* strzałki zawsze w środku panelu */
.modal .slider__btn{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 0;
    color: var(--slider-arrow-color, #ffffff);
    font-size: 72px;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
    user-select: none;
}

.modal .slider__btn:hover{
    color: var(--slider-arrow-hover, #ffffffcc);
}

.modal .slider__btn--prev{ left: 14px; }
.modal .slider__btn--next{ right: 14px; }