.fc-stage { position: relative; align-self: center; max-width: 100%; border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; background: #fff; touch-action: none; }
.fc-stage canvas { display: block; max-width: 100%; height: auto; }
.fc-overlay { position: absolute; inset: 0; cursor: crosshair; }
.fc-box { position: absolute; border: 2px solid var(--primary); background: rgb(79 70 229 / 0.12); border-radius: 2px; font: 600 11px system-ui, sans-serif; color: var(--primary); padding: 1px 3px; overflow: hidden; white-space: nowrap; }
.fc-box.is-drawing { border-style: dashed; }