/* Vollbild-Overlay, standardmäßig versteckt */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    background: transparent;
    display: none;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.18s ease;
}

.overlay.is-open,
.overlay:target {
    display: block;
    opacity: 1;
}

.overlay img {
    display: block;
    width: var(--preview-width, 300px);
    max-width: calc(100vw - 1rem);
    max-height: calc(100vh - 1rem);
    height: auto;
    transform: scale(0.96);
    transform-origin: center center;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    cursor: zoom-in;
    border-radius: 4px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.35);
    background: #fff;
    pointer-events: auto;
}

.overlay.is-open img,
.overlay:target img {
    transform: scale(1);
}

.overlay img:hover {
    transform: scale(1);
}

.overlay .close {
    display: none;
}

.overlay a {
    display: block;
    text-decoration: none;
}

.overlay-backdrop {
    display: none;
}

.overlay-content {
    position: relative;
    z-index: 1;
    pointer-events: auto;
}