.sandbox-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.sandbox-stage{padding:12px;min-width:0}.sandbox-tools{display:flex;gap:7px;flex-wrap:wrap;padding:4px 4px 12px;border-bottom:1px solid var(--line)}.sandbox-tools .active{color:var(--gold);border-color:var(--gold);background:var(--gold-wash)}#sb-board{width:100%;height:calc(100vh - 280px);min-height:410px;display:block;filter:drop-shadow(0 10px 9px #0002)}#sb-board [data-cell]{cursor:pointer;outline:none}#sb-board [data-cell]:focus-visible circle{stroke:var(--gold);stroke-width:3}#sb-status{padding:12px;text-align:center;color:var(--gold);font-size:13px}.sandbox-settings{padding:20px}.sandbox-settings h2{margin-top:0}.sandbox-settings label{display:grid;gap:8px;margin:18px 0}.sandbox-settings select{width:100%}.sandbox-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.sandbox-actions button{flex:1;white-space:nowrap}#sb-count{padding:12px;background:var(--surface-raised);border-radius:10px}#sb-plan{max-height:210px;overflow:auto;font-size:12px;color:var(--muted)}@media(max-width:1000px){.sandbox-layout{grid-template-columns:1fr}#sb-board{height:60vh}.sandbox-settings{max-width:100%}}