:root{--neon-cyan: #0ff;--neon-magenta: #f0f;--neon-lime: #0f0;--bg-color: #050505}*{box-sizing:border-box;-webkit-user-select:none;user-select:none}body{margin:0;padding:0;background-color:#000;color:#fff;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;overflow:hidden;height:100vh;display:flex;flex-direction:column}#app{display:flex;flex-direction:column;height:100%;align-items:center;justify-content:center}#game-header{width:100%;max-width:1200px;display:flex;justify-content:space-between;align-items:center;padding:10px 20px;background:#111;border-bottom:2px solid var(--neon-cyan);box-shadow:0 0 20px #00ffff1a;z-index:100}.stats-group,.controls-group{display:flex;gap:20px;align-items:center}.stat{font-size:1.2rem;font-weight:700;text-shadow:0 0 5px rgba(255,255,255,.5)}.value{color:var(--neon-lime)}#money-display{color:#ff0}#lives-display{color:red}#wave-display{color:#fff}#game-container{position:relative;width:1200px;height:800px;border:2px solid var(--neon-cyan);box-shadow:0 0 30px #00ffff1a;background:var(--bg-color);margin-top:20px}canvas{display:block;width:100%;height:100%}#ui-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}#tower-selection{position:absolute;top:10px;right:10px;display:flex;gap:10px;pointer-events:auto}.tower-btn,.control-btn{background:#000c;border:1px solid var(--neon-magenta);color:#fff;padding:8px 12px;cursor:pointer;font-family:inherit;font-weight:700;transition:all .2s;text-shadow:0 0 5px var(--neon-magenta);box-shadow:0 0 5px var(--neon-magenta)}.control-btn{border-color:var(--neon-cyan);text-shadow:0 0 5px var(--neon-cyan);box-shadow:0 0 5px var(--neon-cyan)}.tower-btn:hover,.control-btn:hover{background:#f0f3;transform:scale(1.05)}.control-btn:hover{background:#0ff3}.tower-btn.active{background:#0ff3;border-color:var(--neon-cyan);box-shadow:0 0 15px var(--neon-cyan)}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000d9;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:1000}.neon-title{font-size:4rem;color:#fff;text-shadow:0 0 10px #fff,0 0 20px #fff,0 0 40px var(--neon-cyan),0 0 80px var(--neon-cyan);margin-bottom:40px}.neon-btn{font-size:1.5rem;padding:15px 40px;background:transparent;border:2px solid var(--neon-lime);color:var(--neon-lime);text-shadow:0 0 10px var(--neon-lime);box-shadow:0 0 10px var(--neon-lime),inset 0 0 10px var(--neon-lime);cursor:pointer;transition:all .3s;font-family:inherit;font-weight:700;text-transform:uppercase}.neon-btn:hover{background:var(--neon-lime);color:#000;box-shadow:0 0 20px var(--neon-lime),0 0 40px var(--neon-lime)}