/* Styl dla okna podglądu */
.lightbox {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.9);
    display: none; justify-content: center; align-items: center;
    z-index: 2000; cursor: zoom-out;
    opacity: 0; transition: opacity 0.3s ease;
}
.lightbox.active { display: flex; opacity: 1; }
.lightbox img { 
    max-width: 90%; max-height: 85%; 
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
    transform: scale(0.8); transition: transform 0.3s ease;
}
.lightbox.active img { transform: scale(1); }
.lightbox-close {
    position: absolute; top: 20px; right: 30px;
    color: white; font-size: 40px; cursor: pointer;
}