:root{--cell-size: 32px;--bg: #0f172a;--panel: #111827;--text: #e5e7eb;--accent: #22c55e;--danger: #ef4444}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji";background:var(--bg);color:var(--text)}.app{max-width:640px;margin:24px auto;padding:16px}.controls{display:flex;align-items:center;gap:12px;margin:12px 0 20px}.controls button{background:var(--accent);color:#062;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-weight:700}.controls .status{margin-left:auto;padding:4px 8px;border-radius:6px;background:var(--panel)}.controls .status.lost{background:#331a1a;color:var(--danger)}.controls .status.won{background:#13251a;color:var(--accent)}.board{display:grid;gap:4px;background:var(--panel);padding:6px;border-radius:8px;width:fit-content}.cell{width:var(--cell-size);height:var(--cell-size);background:#1f2937;border:1px solid #374151;border-radius:4px;color:#d1d5db;font-weight:800;display:grid;place-items:center;cursor:pointer}.cell.revealed{background:#111827;cursor:default}.cell.mine.revealed{background:#381515;color:var(--danger)}