:root{--bg:#0f172a;--panel:#1e293b;--panel2:#16213a;--border:#334155;--text:#e2e8f0;--sub:#94a3b8;--accent:#38bdf8;--gold:#fbbf24;--hp:#ef4444;--good:#22c55e;--bad:#ef4444}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#1e293b,#0b1120 70%);color:var(--text);font-family:"Hiragino Sans","Yu Gothic",-apple-system,sans-serif;display:flex;flex-direction:column;align-items:center;padding:16px;gap:12px}h1{font-size:20px;margin:4px 0 0;letter-spacing:.05em}.sub{color:var(--sub);font-size:12px;margin-bottom:4px;text-align:center}.wrap{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;align-items:flex-start}.hud{display:flex;gap:10px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:8px 12px;align-items:center;font-size:13px}.hud .stat{display:flex;align-items:center;gap:5px;padding:2px 8px;border-radius:6px;background:var(--panel2)}.hud .stat b{font-size:14px}#goldVal{color:var(--gold)}#lifeVal{color:var(--hp)}#waveVal{color:var(--accent)}.board-col{display:flex;flex-direction:column;gap:8px;align-items:center}#canvasHolder{position:relative;border:2px solid var(--border);border-radius:8px;overflow:hidden;background:#0a1120}canvas{display:block;touch-action:none;cursor:crosshair}#toast{position:absolute;top:8px;left:50%;transform:translateX(-50%);background:rgba(15,23,42,.92);border:1px solid var(--border);color:#fca5a5;padding:5px 12px;border-radius:6px;font-size:12px;opacity:0;transition:opacity .2s;pointer-events:none;white-space:nowrap}#toast.show{opacity:1}.overlay{position:absolute;inset:0;background:rgba(5,8,16,.86);display:none;align-items:center;justify-content:center;flex-direction:column;gap:10px;text-align:center;padding:20px}.overlay.show{display:flex}.overlay h2{font-size:26px;margin:0}.overlay p{color:var(--sub);margin:0;font-size:13px}.overlay button{margin-top:6px}.panel{width:270px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:10px;font-size:13px}.panel h3{margin:0 0 2px;font-size:13px;color:var(--sub);font-weight:600;letter-spacing:.04em}.towerBtns{display:grid;grid-template-columns:1fr 1fr;gap:8px}.towerBtn{background:var(--panel2);border:1px solid var(--border);border-radius:8px;padding:8px 6px;color:var(--text);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;transition:.12s;position:relative}.towerBtn:hover{border-color:var(--accent)}.towerBtn.active{border-color:var(--accent);background:#0c2a3e;box-shadow:0 0 0 1px var(--accent) inset}.towerBtn .ico{font-size:20px}.towerBtn .name{font-size:11px}.towerBtn .cost{font-size:11px;color:var(--gold)}.towerBtn:disabled{opacity:.4;cursor:not-allowed}.desc{font-size:11px;color:var(--sub);line-height:1.5}button.primary{background:linear-gradient(180deg,#38bdf8,#0284c7);border:none;color:#04121c;font-weight:700;padding:9px 14px;border-radius:8px;cursor:pointer;font-size:13px}button.primary:hover{filter:brightness(1.08)}button.primary:disabled{opacity:.45;cursor:not-allowed;filter:none}button.ghost{background:0 0;border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:7px;cursor:pointer;font-size:12px}button.ghost:hover{border-color:var(--accent)}button.danger{border-color:#7f1d1d;color:#fca5a5}button.danger:hover{border-color:var(--bad)}#selBox{border-top:1px solid var(--border);padding-top:10px;display:none;flex-direction:column;gap:6px}#selBox.show{display:flex}#selBox .row{display:flex;justify-content:space-between;align-items:center}#selBox .barBg{background:#0a1120;border-radius:5px;height:6px;overflow:hidden;margin-top:2px}#selBox .barFg{background:var(--hp);height:100%}.btnRow{display:flex;gap:6px}.legend{display:flex;flex-direction:column;gap:4px;font-size:11px;color:var(--sub)}.legend div span{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:5px}footer{color:#475569;font-size:11px;margin-top:4px}