/* compare-images.css — tool layout on top of /assets/polyatic.css; every colour is a polyatic token. */
.nojs{margin:1.25rem 0 0;padding:0.875rem 1rem;border:1px solid var(--line);border-left:0.25rem solid var(--accent);border-radius:0.625rem;background:var(--surface);color:var(--ink);font-size:0.9375rem;line-height:1.6}

@media(min-width:920px){
  .cmp-duo{grid-template-columns:minmax(0,1.65fr) minmax(19rem,.75fr)}
}

/* the two pick slots, always side by side (also on a phone) with the swap button between */
.cmp-pick{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:0.5rem;align-items:stretch}
.cmp-slot{min-width:0;display:flex;flex-direction:column;border-radius:0.875rem}
.cmp-slot.drag .drop,.cmp-slot.drag .cmp-loaded{border-color:var(--accent);background:var(--accent-soft)}
.drop{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.3125rem;text-align:center;min-height:8.5rem;padding:1rem 0.625rem;border:2px dashed var(--line-2);border-radius:0.875rem;background:var(--surface-2);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop:focus-visible{border-color:var(--accent);background:var(--accent-soft)}
.drop b{font-size:1rem}
.drop small{color:var(--muted);font-size:0.8125rem}
.drop[hidden],.cmp-loaded[hidden]{display:none}
.cmp-tag{display:inline-grid;place-items:center;width:1.75rem;height:1.75rem;border-radius:0.4375rem;background:var(--ink);color:var(--bg);font-family:var(--mono);font-weight:700;font-size:0.875rem;flex:0 0 auto}
.cmp-tag-b{background:var(--accent);color:var(--surface)}
.cmp-loaded .cmp-tag{width:1.375rem;height:1.375rem;font-size:0.75rem}
.cmp-loaded{flex:1;display:grid;grid-template-columns:auto minmax(0,1fr);grid-template-rows:auto auto;gap:0.375rem 0.625rem;align-items:center;padding:0.5rem;border:1px solid var(--line);border-radius:0.875rem;background:var(--surface-2)}
.cmp-thumb{grid-row:span 2;max-width:4.5rem;max-height:3.5rem;border-radius:0.25rem;border:1px solid var(--line);background:var(--surface)}
.cmp-meta{min-width:0;display:flex;flex-wrap:wrap;align-items:center;gap:0.25rem 0.375rem;font-size:0.8125rem;font-weight:600;color:var(--ink)}
.cmp-name{min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cmp-dims{flex-basis:100%;font-family:var(--mono);font-size:0.6875rem;font-weight:500;color:var(--muted)}
.cmp-change{justify-self:start;padding:0.3125rem 0.625rem;font-size:0.8125rem}
.cmp-swap{align-self:center;min-width:2.5rem;min-height:2.5rem;padding:0.25rem;font-size:1.125rem;line-height:1}
.cmp-swap:disabled{opacity:.4;cursor:default}
.chip:focus-visible,.modes button:focus-visible,.drop:focus-visible,#view:focus-visible,.cmp-region:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.hint{font-size:0.8125rem;color:var(--muted);margin:0.625rem 0.125rem 0;min-height:1.125rem}
.hint.bad{color:var(--bad);font-weight:600}

.cmp-work{margin-top:1rem}
.cmp-work[hidden]{display:none}
.cmp-sizebar{padding:0.625rem 0.75rem;margin:0 0 0.75rem;border:1px solid var(--line);border-left:0.25rem solid var(--warn);border-radius:0.625rem;background:var(--surface)}
.cmp-sizebar[hidden]{display:none}
.cmp-sizenote{margin:0 0 0.5rem;font-size:0.875rem;color:var(--ink-2)}
.cmp-modes{margin:0 0 0.75rem}
.cmp-sizebar .cmp-modes{margin:0}
.cmp-modebar button{min-width:5.5rem}
.cmp-small button{font-size:0.8125rem;padding:0.375rem 0.5rem}
.cmp-ctl{display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem 0.875rem;margin:0 0 0.75rem;min-height:2.5rem}
.cmp-ctl[hidden]{display:none}
.cmp-ctl .cmp-small{flex:0 1 15rem;margin:0}
.cmp-range{flex:1 1 13rem;display:flex;flex-direction:column;gap:0.25rem;font-size:0.8125rem;color:var(--muted)}
.cmp-range b{font-family:var(--mono);color:var(--accent)}
.cmp-range input{width:100%;accent-color:var(--accent)}
.cmp-now{font-family:var(--mono);font-weight:700;color:var(--ink);min-width:2.5rem}
.cmp-tip{font-size:0.8125rem;color:var(--muted)}
.cmp-zoombtns{display:inline-flex;gap:0.25rem}
.cmp-zoombtns .chip{min-width:2.5rem;padding:0.375rem 0.625rem}

/* the stage: a checkerboard shows through transparent pixels */
.cmp-stage{display:flex;justify-content:center;align-items:center;border:1px solid var(--line);border-radius:0.5rem;background:var(--surface-2);background-image:linear-gradient(45deg,var(--line) 25%,transparent 25%,transparent 75%,var(--line) 75%),linear-gradient(45deg,var(--line) 25%,transparent 25%,transparent 75%,var(--line) 75%);background-size:1rem 1rem;background-position:0 0,0.5rem 0.5rem;padding:0.25rem;overflow:hidden;min-height:8rem}
#view{display:block;width:100%;height:auto;max-height:72vh;object-fit:contain;touch-action:none;user-select:none;-webkit-user-select:none}
#view.pixelated{image-rendering:pixelated}
#view[hidden]{display:none}
.cmp-side{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:0.375rem}
.cmp-side[hidden]{display:none}
.cmp-port{position:relative;height:min(60vh,32rem);overflow:hidden;border-radius:0.375rem;background:var(--surface);cursor:grab;touch-action:none}
.cmp-port:active{cursor:grabbing}
.cmp-port canvas{position:absolute;left:0;top:0;transform-origin:0 0;max-width:none}
.cmp-port.pixelated canvas{image-rendering:pixelated}
.cmp-portlab{position:absolute;left:0.375rem;top:0.375rem;padding:0.125rem 0.4375rem;border-radius:0.3125rem;background:var(--ink);color:var(--bg);font-family:var(--mono);font-size:0.75rem;font-weight:700;pointer-events:none}
.cmp-port[data-port="b"] .cmp-portlab{background:var(--accent);color:var(--surface)}
.cmp-legend{margin:0.5rem 0.125rem 0;font-size:0.8125rem;color:var(--muted)}

/* difference panel */
.cmp-sidepanel{display:grid;gap:1rem;align-content:start}
.cmp-panel .sec{font-size:0.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 0.625rem}
.cmp-result{margin:0 0 1rem;padding:0.625rem 0.75rem;border-radius:0.5rem;background:var(--surface-2);border:1px solid var(--line);font-weight:650;font-size:0.9375rem;color:var(--ink);font-variant-numeric:tabular-nums}
.cmp-result.same{border-color:var(--ok)}
.cmp-panel .field{margin:0 0 0.875rem}
.cmp-panel .field input[type=range]{width:100%;accent-color:var(--accent)}
.cmp-panel .field .v input{width:4.25rem;padding:0.125rem 0.375rem;border:1px solid var(--line-2);border-radius:0.375rem;background:var(--surface);color:var(--accent);font:inherit;font-size:0.9375rem;text-align:right}
.cmp-help{display:block;margin-top:0.25rem;font-size:0.75rem;color:var(--muted);line-height:1.45}
.cmp-check{display:inline-flex;align-items:center;gap:0.5rem;cursor:pointer;color:var(--ink);font-weight:600;font-size:0.875rem;margin:0 0 0.875rem}
.cmp-check input{width:1.125rem;height:1.125rem;accent-color:var(--accent);margin:0}
.cmp-two{display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem 0.75rem;margin:0 0 0.75rem}
.cmp-two .cmp-check{margin:0}
.cmp-lab{font-size:0.8125rem;font-weight:600;color:var(--ink-2)}
.cmp-two input[type=color]{width:3.25rem;height:2.25rem;padding:0.125rem;border:1px solid var(--line-2);border-radius:0.5rem;background:var(--surface);cursor:pointer}
.cmp-subh{font-size:0.875rem;margin:0.25rem 0 0.5rem;color:var(--ink)}
.cmp-count{font-family:var(--mono);color:var(--muted);font-weight:500}
.cmp-regions{list-style:none;margin:0;padding:0;display:grid;gap:0.25rem;max-height:16rem;overflow:auto}
.cmp-region{width:100%;display:flex;flex-wrap:wrap;align-items:baseline;gap:0.125rem 0.5rem;padding:0.375rem 0.5rem;border:1px solid var(--line);border-radius:0.4375rem;background:var(--surface);color:var(--ink);font:inherit;font-size:0.8125rem;text-align:left;cursor:pointer}
.cmp-region:hover,.cmp-region.on{border-color:var(--accent);background:var(--accent-soft)}
.cmp-xy{font-family:var(--mono);font-size:0.75rem}
.cmp-region small{margin-left:auto;color:var(--muted);font-size:0.75rem}
.cmp-more{font-size:0.75rem;color:var(--muted);padding:0.25rem 0.125rem}
.note{font-size:0.8125rem;color:var(--muted);margin:0.75rem 0.125rem 0;line-height:1.5}
.note b{color:var(--ink)}
.note[hidden]{display:none}
.cmp-export{width:100%;margin-top:0.875rem}
.cmp-export:disabled{opacity:.5;cursor:default;filter:none}

.explainer .cmp-steps,.explainer .cmp-cannot{color:var(--muted);font-size:0.9375rem;margin:0 0 0.75rem;padding-left:1.25rem}
.explainer .cmp-steps li,.explainer .cmp-cannot li{margin:0 0 0.5rem}
.explainer .cmp-steps b,.explainer .cmp-cannot b{color:var(--ink)}

@media (prefers-reduced-motion:reduce){.drop{transition:none}}
@media(max-width:600px){
  .drop{min-height:7rem;padding:0.75rem 0.375rem}
  .cmp-loaded{grid-template-columns:minmax(0,1fr)}
  .cmp-thumb{grid-row:auto;max-width:100%}
  .cmp-modebar button{min-width:0;flex:1 1 30%;font-size:0.8125rem;padding:0.4375rem 0.25rem}
  .cmp-side{grid-template-columns:1fr}
  .cmp-port{height:38vh}
}