: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}.shell{min-height:100vh;display:grid;place-items:center;padding:2rem}.game{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.header{text-align:center}.tag{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.65rem;letter-spacing:.22em;text-transform:uppercase;color:#ffffff8c;border:1px solid rgba(255,255,255,.12);padding:.25rem .5rem;border-radius:.25rem;margin-bottom:1rem}h1{margin:0 0 .5rem;font-size:1.5rem;font-weight:600;letter-spacing:-.02em}.stats{color:#ffffff80;font-size:.85rem;margin:0}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;width:min(22rem,90vw)}.card-cell{aspect-ratio:1;font-size:2rem;border-radius:.5rem;border:1px solid rgba(255,255,255,.12);background:#ffffff0a;color:#ffffff40;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;cursor:pointer;transition:background .15s,border-color .15s,transform .15s;display:grid;place-items:center;-webkit-user-select:none;user-select:none;padding:0}.card-cell:hover:not(.flipped):not(.matched){background:#ffffff14;border-color:#fff3;transform:scale(1.04)}.card-cell.flipped{background:#ffffff1a;border-color:#ffffff40;color:#fafafa}.card-cell.matched{background:#4ade801f;border-color:#4ade804d;color:#fafafa;cursor:default}.reset-btn{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:#ffffff8c;background:transparent;border:1px solid rgba(255,255,255,.12);padding:.5rem 1.25rem;border-radius:.375rem;cursor:pointer;transition:background .15s,border-color .15s}.reset-btn:hover{background:#ffffff0f;border-color:#fff3}