: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:1rem}.game-container{display:flex;flex-direction:column;align-items:center;gap:1rem;position:relative}.game-header{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:320px}.game-title{margin:0;font-size:1.4rem;font-weight:700;letter-spacing:-.02em}.score-display{display:flex;flex-direction:column;align-items:flex-end}.score-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.15em;color:#ffffff73}.score-value{font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums;color:#facc15}.board{display:grid;grid-template-columns:repeat(10,28px);grid-template-rows:repeat(12,28px);gap:2px;background:#ffffff0f;padding:4px;border-radius:8px}.cell{width:28px;height:28px;border-radius:4px;transition:transform .12s ease,opacity .18s ease,filter .12s ease}.cell.empty{background:transparent}.cell.filled{cursor:pointer}.cell.filled:hover{transform:scale(1.08)}.cell.highlighted{filter:brightness(1.4);transform:scale(1.06)}.cell.clearing{transform:scale(0);opacity:0}.game-over-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:grid;place-items:center;z-index:10}.game-over-card{background:#18181b;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:2.5rem 3rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:.75rem}.game-over-card h2{margin:0;font-size:1.6rem;font-weight:700}.final-score{margin:0;font-size:1.1rem;color:#ffffffa6}.restart-btn{margin-top:.5rem;padding:.6rem 2rem;font-size:.95rem;font-weight:600;border:none;border-radius:8px;background:#3b82f6;color:#fff;cursor:pointer;transition:background .15s}.restart-btn:hover{background:#2563eb}.hint{margin:0;font-size:.8rem;color:#ffffff59}