body{margin:0;padding:0;background:#0f172a;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;user-select:none}#game-container{position:relative;border:4px solid #38bdf8;border-radius:14px;overflow:hidden;box-shadow:0 15px 35px rgba(0,0,0,.6)}.sq-nav,.sq-controls{width:800px;max-width:95vw;margin:0 auto 10px;display:flex;gap:10px;flex-wrap:wrap}.sq-nav{justify-content:flex-start}.sq-controls{justify-content:center;margin-bottom:12px;color:#fff;font-weight:600}.sq-nav a{text-decoration:none;padding:9px 14px;border-radius:10px;font-weight:700}.sq-nav .hub{background:#fff;color:#0f172a;border:1px solid #cbd5e1}.sq-nav .home{background:#fff7ed;color:#c2410c;border:1px solid #fdba74}.sq-controls select{padding:8px 10px;border-radius:10px;border:1px solid #334155;background:#fff;color:#0f172a}.sq-controls button{padding:8px 14px;border-radius:10px;border:0;background:#f97316;color:#fff;font-weight:700;cursor:pointer}#quiz-overlay,#level-overlay{display:none;position:absolute;inset:0;background:rgba(15,23,42,.85);backdrop-filter:blur(5px);z-index:99;align-items:center;justify-content:center}.modal-box{background:#fff;padding:26px;border-radius:18px;width:min(400px,82vw);text-align:center;box-shadow:0 12px 30px rgba(0,0,0,.4);color:#1e293b}.badge-danger,.badge-success{font-weight:700;padding:4px 14px;border-radius:20px;font-size:13px;display:inline-block;margin-bottom:8px}.badge-danger{background:#fee2e2;color:#ef4444}.badge-success{background:#dcfce7;color:#15803d}.modal-q{font-size:16px;font-weight:700;margin:12px 0 16px;line-height:1.4}.option-btn{display:block;width:100%;padding:11px;margin:8px 0;background:#f8fafc;border:2px solid #cbd5e1;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:.2s}.option-btn:hover{border-color:#f97316;background:#fff7ed}.btn-next-level{background:#22c55e;color:#fff;border:0;padding:12px 24px;font-size:16px;font-weight:700;border-radius:10px;cursor:pointer;margin-top:15px;box-shadow:0 4px 12px rgba(34,197,94,.4)}.btn-next-level:hover{background:#16a34a}@media(max-width:840px){#game-container{transform-origin:top center;max-width:95vw}.sq-controls{font-size:13px}}