:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#0a0a0a;color:#fafafa}.game-shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:1.5rem}.menu{text-align:center;max-width:400px}.menu h1{font-size:2.5rem;margin:0 0 .5rem;letter-spacing:-.03em;background:linear-gradient(135deg,#5dade2,gold);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.menu p{margin:0 0 1.5rem;color:#fff9}.controls-info{text-align:left;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:1rem 1.25rem;margin-bottom:1.5rem;font-size:.85rem;color:#ffffffb3;line-height:2}kbd{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:4px;padding:1px 6px;margin:0 2px;color:#fff}.play-btn{font-size:1.15rem;font-weight:600;padding:.65rem 2.5rem;border:none;border-radius:8px;cursor:pointer;background:linear-gradient(135deg,#5dade2,#3498db);color:#fff;transition:transform .12s,box-shadow .12s;box-shadow:0 4px 14px #3498db59}.play-btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px #3498db80}.play-btn:active{transform:translateY(0)}.game-canvas{border:2px solid rgba(255,255,255,.1);border-radius:8px;display:block;max-width:100%;height:auto}.hud{display:flex;gap:2rem;font-size:1rem;font-weight:600;color:#fff;width:800px;max-width:100%;justify-content:space-between}.hud span:last-child{color:#e74c3c}.hud-footer{font-size:.8rem;color:#fff6;text-align:center}