*{box-sizing:border-box}body{margin:0;background:#10151b;color:#e9f1f7;font:15px system-ui, sans-serif}header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:#17232d;border-bottom:1px solid #2e4554}h1{color:#66d9ff;margin:0}button,input{font:inherit}button{background:#223746;color:#eaf7ff;border:1px solid #3e6478;border-radius:6px;padding:7px 10px;cursor:pointer}button:hover{background:#2d5165}nav{display:flex;gap:7px;flex-wrap:wrap}.tab{display:none;padding:18px}.tab.active{display:block}#lab{padding:0;display:none}#lab.active{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 82px)}aside{padding:14px;background:#16212a;border-right:1px solid #2e4554}aside input{width:100%;padding:8px;background:#0e151b;color:white;border:1px solid #3e6478;border-radius:5px}.item{padding:8px;margin:5px 0;background:#20313d;border-radius:6px;cursor:grab}.item small{display:block;color:#9db5c2}.work{padding:14px;overflow:hidden}.controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}.controls label{display:flex;gap:5px;align-items:center}.controls input{width:120px}.warning{font-size:12px;color:#ffbd80}.sandbox{position:relative;height:68vh;min-height:420px;border:1px solid #405969;border-radius:10px;overflow:hidden;background:radial-gradient(circle at 50% 30%,#263f4b,#0a0e12 75%);transform-origin:center}.card{position:absolute;width:150px;min-height:84px;padding:10px;border-radius:9px;background:linear-gradient(145deg,#d9f4ffcc,#77a9b999);color:#07151b;border:2px solid #a9eaff;box-shadow:0 8px 20px #0008;cursor:move;user-select:none}.card.tool{background:linear-gradient(145deg,#eee,#8999a0)}.card b{display:block}.tag{font-size:11px}.drop{border:2px dashed #72d4ed}.element{display:inline-flex;justify-content:center;align-items:center;width:55px;height:55px;margin:3px;background:#203b4b;border:1px solid #55869d;border-radius:5px;cursor:pointer}.element strong{font-size:18px}.element span{font-size:10px;margin-left:3px}#elementInfo{margin-top:15px;padding:15px;background:#16212a;border-radius:8px}footer{position:fixed;right:6px;bottom:3px;font-size:10px;color:#93a8b2}a{color:#67d9ff}.tutorial{padding:12px;background:#172832;margin:8px 0;border-radius:7px}.tutorial button{margin-top:8px} @media(max-width:760px){#lab.active{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid #2e4554}.sandbox{height:58vh}}