/* Only digit sources capture touch gestures; the rest of the page remains scrollable. */
.digit-drag-source{touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}
.digit-drag-source:active,.has-digit-drag .digit-drag-source{cursor:grabbing}
.digit-drag-origin{opacity:.4}
.digit-drag-can-drop{outline:2px dashed var(--outline-strong,#9ca3af);outline-offset:3px}
.digit-drag-over-valid{outline:3px solid var(--focus,#7c3aed);outline-offset:3px}
.digit-drag-over-invalid{outline:3px solid #dc2626;outline-offset:3px;cursor:not-allowed}
.digit-drag-ghost{position:fixed;top:0;left:0;transform:translate(-50%,-50%);z-index:10000;pointer-events:none;display:grid;place-items:center;width:56px;height:64px;border:2px solid var(--outline-strong,#9ca3af);border-radius:8px;background:var(--surface,#fff);color:var(--prose,#111827);font:700 28px var(--font-roll,monospace);box-shadow:0 5px 16px #0003}
@media(prefers-reduced-motion:reduce){.digit-drag-source{transition:none}}