:root{color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{margin:0;padding:0;width:100%;height:100%;background:#070b14;overflow:hidden;font-family:Courier New,monospace;color:#fafafa}.game-container{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;position:relative}canvas{display:block;cursor:crosshair;max-width:100vw;max-height:100vh;object-fit:contain}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:10}.start-screen{background:#070b14;gap:1.5rem}.title{font-size:clamp(2rem,6vw,4rem);letter-spacing:.3em;text-shadow:0 0 30px #4a9eff,0 0 60px #1a4aaa;color:#8dc8ff;font-weight:700;text-align:center;margin:0}.rules{color:#ffffff73;font-size:.9rem;text-align:center;line-height:1.6}.difficulty-selector{display:flex;gap:.75rem;margin-top:.5rem}.difficulty-btn{background:transparent;border:1px solid rgba(255,255,255,.2);color:#fff9;font-family:Courier New,monospace;font-size:.85rem;text-transform:uppercase;letter-spacing:.15em;padding:.5rem 1.5rem;cursor:pointer;transition:all .15s ease}.difficulty-btn:hover{border-color:#4a9eff;color:#8dc8ff;box-shadow:0 0 12px #4a9eff33}.difficulty-btn.active{border-color:#4a9eff;color:#4a9eff;background:#4a9eff1a}.primary-btn{background:transparent;border:1px solid #4a9eff;color:#4a9eff;font-family:Courier New,monospace;font-size:1rem;text-transform:uppercase;letter-spacing:.2em;padding:.75rem 2.5rem;cursor:pointer;transition:all .15s ease}.primary-btn:hover{background:#4a9eff26;box-shadow:0 0 20px #4a9eff4d}.secondary-btn{background:transparent;border:1px solid rgba(255,255,255,.2);color:#ffffff80;font-family:Courier New,monospace;font-size:1rem;text-transform:uppercase;letter-spacing:.2em;padding:.75rem 2.5rem;cursor:pointer;transition:all .15s ease}.secondary-btn:hover{border-color:#fff6;color:#ffffffb3}.result-screen{background:#070b14d1;gap:1.5rem}.result-title{font-size:clamp(2.5rem,8vw,5rem);letter-spacing:.3em;font-weight:700;text-align:center;margin:0}.result-title.won{color:#8dc8ff;text-shadow:0 0 30px #4a9eff,0 0 60px #1a4aaa}.result-title.lost{color:#ff9090;text-shadow:0 0 30px #ff4a4a,0 0 60px #8a1a1a}.result-stats{display:flex;gap:2rem}.stat{display:flex;flex-direction:column;align-items:center;gap:.25rem}.stat-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.2em;color:#fff6}.stat-value{font-size:1.5rem;color:#fffc}.result-buttons{display:flex;gap:1rem;margin-top:.5rem}