.imagery-shell{position:absolute;inset:0;z-index:9;background:#fff;overflow:hidden}.imagery-shell[hidden],.imagery-provenance[hidden]{display:none}.imagery-viewport{position:absolute;inset:0;touch-action:none;cursor:grab;overflow:hidden}.imagery-viewport:active{cursor:grabbing}.imagery-viewport:focus-visible{outline:3px solid #cf6837;outline-offset:-4px}.imagery-tiles{position:absolute;inset:0;pointer-events:none}.imagery-tiles img{position:absolute;max-width:none!important;user-select:none}.imagery-heading{position:absolute;top:12px;left:15px;right:15px;pointer-events:none;display:flex;flex-direction:column;gap:4px;font:9px/1.5 monospace;color:#234b5d;background:#ffffffd9;padding:7px}.imagery-heading b{letter-spacing:1px}.imagery-choices{position:absolute;top:77px;left:15px;right:15px;display:flex;flex-wrap:wrap;gap:5px}.imagery-choices button{min-height:44px;padding:8px 10px;background:#fffffff0;border:1px solid #9db6bf;border-radius:3px;font:10px Arial;color:#244d60}.imagery-status,.imagery-scale{position:absolute;left:12px;bottom:12px;font:9px/1.5 monospace;padding:5px 7px;background:#ffffffe8;pointer-events:none;color:#305d6b;max-width:calc(100% - 24px)}.imagery-scale{bottom:40px;border-bottom:2px solid #3f6f7c}.imagery-provenance{padding:12px;background:#e9f1f2;border-left:3px solid #34758b;font:11px/1.7 Arial;color:#315a69}.imagery-provenance small{font-size:10px}.imagery-on .gleason-center,.imagery-on .gleason-marker,.imagery-on .gleason-status,.imagery-on .gleason-scale,.imagery-on .gleason-theory-note,.imagery-on .gleason-projection-note,.imagery-on>figcaption{display:none!important}.imagery-on [data-map=rotate],.imagery-on [data-map=pan],.imagery-on [data-map=flat]{display:none}.imagery-on .gleason-stage{perspective:none}.imagery-on .gleason-help{font-size:0!important}.imagery-on .gleason-help:after{content:'Drag to pan · + / − to load more detail · pinch to zoom · arrow keys pan · Home fits Antarctica';font-size:11px}.imagery-on .gleason-stage .imagery-tiles img{height:var(--tile-size,auto)}@media(max-width:600px){.imagery-heading{font-size:8px}.imagery-choices{top:73px;gap:4px}.imagery-choices button{font-size:9px;padding:6px}.imagery-provenance{font-size:10px}}

.imagery-date-controls{position:absolute;left:15px;right:15px;top:128px;display:flex;gap:7px;align-items:center;flex-wrap:wrap;background:#fffffff0;padding:7px;color:#315968;font:10px Arial}.imagery-date-controls[hidden]{display:none}.imagery-date-controls label{display:flex;gap:6px;align-items:center}.imagery-date-controls input,.imagery-date-controls button{min-height:36px;max-width:100%;border:1px solid #a2bdc7;background:white;color:#214f60;padding:5px;font:11px Arial}.imagery-freshness{flex-basis:100%;font-size:9px}.imagery-heading{font-size:9px}.imagery-date-controls button{cursor:pointer}@media(max-width:600px){.imagery-date-controls{top:171px;font-size:9px}.imagery-choices{max-width:330px}.imagery-choices button{flex:1 1 40%}.imagery-heading{font-size:8px}}

/* Explicit archival fallback: never silently fill a dated NASA layer with old imagery. */
.imagery-fallback{position:absolute;left:12px;bottom:112px;z-index:2;min-height:44px;max-width:calc(100% - 24px);padding:8px 12px;border:1px solid #8baab6;border-radius:4px;background:#fff;color:#284f61;font:11px Arial;cursor:pointer}.imagery-fallback[hidden]{display:none}