: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:grid;place-items:center;padding:2rem}.game-container{position:relative;display:flex;flex-direction:column;align-items:center;gap:1rem}.hud{display:flex;justify-content:space-between;width:100%;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1rem;color:#fffc}.grid{display:grid;grid-template-columns:repeat(20,1fr);grid-template-rows:repeat(20,1fr);border:2px solid rgba(255,255,255,.15);border-radius:4px;background:#111}.cell{width:24px;height:24px;border:1px solid rgba(255,255,255,.03)}.cell.snake{background:#4ade80;border-radius:3px}.cell.head{background:#22c55e;border-radius:4px;box-shadow:0 0 6px #4ade8080}.cell.food{background:#f87171;border-radius:50%;box-shadow:0 0 8px #f8717199}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000000bf;border-radius:4px;gap:.5rem;z-index:10}.overlay p{margin:0;color:#fffc;font-size:1rem}.game-over-text{font-size:1.75rem!important;font-weight:700;color:#f87171!important}.restart-btn{margin-top:.5rem;padding:.5rem 1.5rem;border:1px solid rgba(255,255,255,.2);border-radius:.5rem;background:#ffffff14;color:#fafafa;font-size:1rem;cursor:pointer;transition:background .15s}.restart-btn:hover{background:#ffffff26}