.game-header{width:100%;display:flex;flex-direction:column;align-items:center;position:relative}.game-title{margin:16px 0 0;font-size:32px;font-weight:700;letter-spacing:1px}.mute-button{position:fixed;top:24px;right:24px;z-index:10;background:none;border:none;font-size:28px;cursor:pointer;outline:none}.score-display{margin:16px 0 8px;text-align:center;font-weight:700;font-size:18px}.dog-sprite{display:block;width:100%;height:100%}.game-board{width:min(95vw,95vh);height:min(95vw,95vh);max-width:420px;max-height:420px;background:#fff;border-radius:20px;border:4px solid #7a8b74;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden;touch-action:none}.game-grid{display:grid;grid-template-rows:repeat(12,1fr);grid-template-columns:repeat(12,1fr);width:100%;height:100%;background:#e0e0e0;border-radius:12px;position:relative}.grid-cell{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:min(5vw,5vh,32px);-webkit-user-select:none;user-select:none}.game-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#fff9;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:2}.new-high-score{font-size:28px;font-weight:700;color:#d2691e;margin-bottom:10px}.game-over-title{font-size:32px;font-weight:700;margin-bottom:12px}.final-score{font-size:20px;margin-bottom:20px}.high-score{font-size:18px;margin-bottom:20px}.restart-button{font-size:18px;padding:8px 24px;border-radius:8px;border:none;background:#1976d2;color:#fff;font-weight:700;cursor:pointer}.footer{margin-top:24px;text-align:center;color:#888;font-size:15px}.app{width:100%;display:flex;flex-direction:column;align-items:center}body{margin:0;padding:0;background:#c8d6c1;font-family:Segoe UI,Arial,sans-serif;min-height:100vh;display:flex;justify-content:center;align-items:center}#root{width:100vw;height:100vh;display:flex;justify-content:center;align-items:center}