/* Windows Picture and Fax Viewer: dark stage, toolbar of glyph buttons */
.viewer-toolbar { flex-wrap: wrap; gap: 1px; padding: 2px 4px; }
.viewer-btn { min-width: 26px; height: 24px; justify-content: center; font: 11px Tahoma, sans-serif; color: #1c3a7a; }
.viewer-glyph { font-size: 13px; line-height: 1; font-weight: 700; }
.viewer-btn.is-active { border-color: #7f9db9; background: #e3e1d8; }
.viewer-stage {
    flex: 1; min-height: 0; overflow: hidden; position: relative; background: #5a5a5a; outline: 0;
    display: flex; align-items: center; justify-content: center; touch-action: none; cursor: grab;
}
.viewer-stage.is-panning { cursor: grabbing; }
.viewer-img {
    position: absolute; left: 50%; top: 50%; max-width: none; user-select: none;
    transform-origin: center center; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    transition: transform 0.12s ease-out;
}
.viewer-img.no-anim { transition: none; }
@media (prefers-reduced-motion: reduce) { .viewer-img { transition: none; } }