: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;overflow:hidden}.game-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:1rem;gap:.75rem}.game-header{display:flex;gap:2rem;align-items:center;font-size:.95rem;color:#ffffffb3}.game-header span{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.game-header .highlight{color:#4ade80;font-weight:600}.game-header .danger{color:#f87171;font-weight:600}.game-header .warn{color:#facc15;font-weight:600}canvas{border:2px solid rgba(255,255,255,.15);border-radius:.5rem;background:#111;display:block}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#000c;z-index:10}.overlay-card{text-align:center;padding:2.5rem 3rem;border:1px solid rgba(255,255,255,.1);border-radius:.75rem;background:#ffffff0a;max-width:26rem}.overlay-card h1{margin:0 0 .5rem;font-size:1.8rem;letter-spacing:-.02em}.overlay-card p{margin:0 0 1.5rem;color:#fff9;font-size:.95rem;line-height:1.6}.overlay-card .win{color:#4ade80}.overlay-card .lose{color:#f87171}.btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fafafa;padding:.6rem 1.8rem;border-radius:.5rem;font-size:.95rem;cursor:pointer;transition:background .15s;font-family:inherit}.btn:hover{background:#fff3}.controls-hint{font-size:.8rem;color:#ffffff59;margin-top:.5rem}.difficulty-select{display:flex;gap:.5rem;justify-content:center;margin-bottom:1.25rem}.diff-btn{background:#ffffff0f;border:1px solid rgba(255,255,255,.12);color:#fff9;padding:.4rem 1rem;border-radius:.4rem;font-size:.85rem;cursor:pointer;transition:all .15s;font-family:inherit}.diff-btn:hover{border-color:#ffffff4d;color:#fafafa}.diff-btn.active{background:#ffffff26;border-color:#fff6;color:#fafafa}.level-indicator{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8rem;color:#fff6}