/* zocken.ai Vorschau (zckn-viewer.js) */
.zckn-viewer {
    position: fixed;
    inset: 0;
    z-index: 1000300;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.85);
    cursor: zoom-out;
    touch-action: none;
    overscroll-behavior: contain;
    animation: zckn-viewer-fade 0.15s ease;
}

.zckn-viewer-stage {
    position: relative;
    flex: 1;
    width: 100%;
    min-height: 0;
    overflow: hidden;
}

.zckn-viewer-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zckn-viewer-slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    user-select: none;
}

/* Mehrseitige PDFs: Seiten untereinander, scrollen in sich */
.zckn-viewer-slide.pdf {
    flex-direction: column;
    justify-content: flex-start;
    gap: 12px;
    overflow-y: auto;
    touch-action: pan-y;
}

.zckn-viewer-slide.pdf.row {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.zckn-viewer-slide.pdf.row canvas {
    margin: 0;
}

.zckn-viewer-slide.pdf canvas {
    flex: none;
    margin: auto;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.zckn-viewer-slide img,
.zckn-viewer-slide canvas {
    position: relative;
    transition: transform 0.15s ease;
}

/* Longpress: Lupe */
.zckn-viewer-slide .zoomed {
    z-index: 2;
    transform: scale(2.5);
    cursor: zoom-in;
}

.zckn-viewer-slide.loading::after {
    content: '';
    width: 34px;
    height: 34px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: zckn-viewer-spin 0.8s linear infinite;
}

.zckn-viewer-slide.pdf.loading::after {
    margin: auto;
}

.zckn-viewer-file {
    margin: auto;
    color: #fff;
    font-size: 1.1em;
    padding: 14px 20px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.zckn-viewer-slide.from-right { animation: zckn-viewer-in-right 0.22s ease; }
.zckn-viewer-slide.from-left { animation: zckn-viewer-in-left 0.22s ease; }

/* Anfang/Ende erreicht: kurz anstossen */
.zckn-viewer.bump .zckn-viewer-stage { animation: zckn-viewer-bump 0.3s ease; }

.zckn-viewer-caption {
    color: #ccc;
    font-size: 0.9em;
    text-align: center;
    word-break: break-all;
}

@keyframes zckn-viewer-in-right { from { transform: translateX(12%); opacity: 0; } }
@keyframes zckn-viewer-in-left { from { transform: translateX(-12%); opacity: 0; } }
@keyframes zckn-viewer-bump { 30% { transform: scale(0.97); } }
@keyframes zckn-viewer-fade { from { opacity: 0; } }
@keyframes zckn-viewer-spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
    .zckn-viewer, .zckn-viewer-slide, .zckn-viewer.bump .zckn-viewer-stage { animation: none; }
}