.ox-bf-stage { position: relative; display: inline-block; max-width: 100%; line-height: 0; touch-action: none; cursor: crosshair; }
.ox-bf-stage canvas { max-width: 100%; height: auto; display: block; }
.ox-bf-layer { position: absolute; inset: 0; pointer-events: none; }
.ox-bf-box { position: absolute; border: 2px dashed #fff; box-shadow: 0 0 0 1px #7c3aed; box-sizing: border-box; }
.ox-bf-box.is-round { border-radius: 50%; }
.ox-bf-box.is-sel { border: 3px solid #7c3aed; box-shadow: 0 0 0 2px #fff; }
.ox-bf-handle { position: absolute; right: -14px; bottom: -14px; width: 28px; height: 28px; border-radius: 50%; background: #7c3aed; border: 3px solid #fff; pointer-events: auto; touch-action: none; cursor: nwse-resize; }