:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:#0a0a0a;color:#fafafa;overflow:hidden}.game-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;position:relative;background:#0f0c29}.game-canvas{border:2px solid #333;border-radius:8px;cursor:crosshair;max-width:100vw;max-height:80vh;box-shadow:0 0 40px #6432c84d}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#000000d9;z-index:10;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.menu{text-align:center;padding:3rem 4rem;border-radius:1rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);max-width:420px}.menu h1{font-size:3rem;margin-bottom:.25rem;background:linear-gradient(135deg,gold,#ff6b35);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{font-size:1.1rem;color:#fff9;margin-bottom:1.5rem}.instructions{text-align:left;margin-bottom:1.5rem}.instructions p{padding:.4rem 0;font-size:.95rem;color:#fffc}.high-score{color:gold;font-weight:600;margin-bottom:1rem;font-size:1.1rem}.final-score{font-size:2rem;font-weight:700;margin:.5rem 0}.new-record{color:gold;font-size:1.3rem;font-weight:700;animation:pulse .8s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}button{background:linear-gradient(135deg,#ff6b35,gold);color:#000;border:none;padding:.8rem 2.5rem;font-size:1.1rem;font-weight:700;border-radius:2rem;cursor:pointer;transition:transform .15s,box-shadow .15s;margin-top:.5rem}button:hover{transform:scale(1.05);box-shadow:0 0 20px #ff6b3580}button:active{transform:scale(.97)}.hud{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:.75rem 1.5rem;z-index:5;pointer-events:none;background:linear-gradient(to bottom,rgba(0,0,0,.6),transparent)}.hud-left,.hud-right{display:flex;gap:1rem;align-items:center}.hud-center{display:flex;gap:.5rem}.hud-score{font-size:1.4rem;font-weight:700;color:gold}.hud-wave{font-size:1rem;color:#ffffffb3;background:#ffffff1a;padding:.2rem .6rem;border-radius:.5rem}.life{font-size:1.2rem;transition:opacity .3s}.life.lost{opacity:.2}.active-powerup{font-size:.85rem;padding:.2rem .6rem;border-radius:.5rem;border:2px solid;background:#00000080;color:#fff;white-space:nowrap}