: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;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden;background:#000;color:#fafafa}.game-root{position:relative;width:100%;height:100%}.game-canvas{display:block;width:100%;height:100%}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#0000008c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.menu-card,.pause-card,.gameover-card,.shop-card{background:#141423f2;border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:2rem;max-width:480px;width:90%;text-align:center;box-shadow:0 20px 60px #00000080;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.game-logo{margin-bottom:1.5rem}.logo-bike{font-size:3rem;display:block;margin-bottom:.5rem;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3))}.game-logo h1{font-size:2rem;font-weight:800;background:linear-gradient(135deg,#e74c3c,#f39c12,#2ecc71,#3498db);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.25rem;letter-spacing:-.02em}.subtitle{color:#ffffff80;font-size:.9rem}.menu-buttons{display:flex;flex-direction:column;gap:.75rem;margin:1.5rem 0}.btn{padding:.75rem 1.5rem;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .15s ease;font-family:inherit}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff;box-shadow:0 4px 15px #e74c3c66}.btn-primary:hover{box-shadow:0 6px 20px #e74c3c99;transform:translateY(-1px)}.btn-secondary{background:#ffffff14;color:#fff;border:1px solid rgba(255,255,255,.15)}.btn-secondary:hover{background:#ffffff26}.btn-ghost{background:transparent;color:#fff9;border:1px solid rgba(255,255,255,.1)}.btn-ghost:hover{color:#fff;border-color:#ffffff4d}.menu-stats{display:flex;gap:1rem;justify-content:center;margin:1rem 0}.stat{display:flex;flex-direction:column;gap:.15rem}.stat-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:#fff6}.stat-value{font-size:1.1rem;font-weight:700}.coin-val{color:#f1c40f}.controls-hint{margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(255,255,255,.08);font-size:.8rem;color:#fff6}.controls-hint p{margin:.25rem 0}kbd{display:inline-block;padding:.15rem .4rem;font-size:.75rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:4px;color:#ffffffb3}.gameover-card h2{font-size:1.8rem;margin-bottom:1rem;color:#e74c3c}.go-stats{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin:1rem 0}.go-stat{display:flex;flex-direction:column;align-items:center;min-width:80px}.go-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:#fff6}.go-value{font-size:1.5rem;font-weight:800}.new-record{width:100%;font-size:1rem;font-weight:700;color:#f1c40f;animation:pulse .8s ease infinite alternate}@keyframes pulse{0%{opacity:.7;transform:scale(1)}to{opacity:1;transform:scale(1.05)}}.pause-card h2{font-size:1.5rem;margin-bottom:1rem}.shop-card{max-width:600px;max-height:85vh;overflow-y:auto}.shop-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem}.shop-header h2{font-size:1.5rem;margin:0}.coin-display{font-size:1.1rem;font-weight:700;color:#f1c40f;background:#f1c40f26;padding:.35rem .75rem;border-radius:8px}.bike-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1.25rem}.bike-card{background:#ffffff0a;border:2px solid rgba(255,255,255,.08);border-radius:12px;padding:1rem;cursor:pointer;transition:all .15s ease;text-align:left}.bike-card:hover{background:#ffffff14;border-color:#fff3}.bike-card.selected{border-color:#fff6;background:#ffffff0f}.bike-card.locked{opacity:.7}.bike-preview{width:100%;height:60px;border-radius:8px;border:2px solid;display:flex;align-items:center;justify-content:center;margin-bottom:.75rem;background:#0000004d}.bike-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.bike-info{display:flex;flex-direction:column;gap:.25rem}.bike-name{font-weight:700;font-size:1rem}.bike-desc{font-size:.75rem;color:#fff6}.bike-stats{display:flex;flex-direction:column;gap:.3rem;margin:.4rem 0}.mini-stat{display:flex;align-items:center;gap:.5rem;font-size:.7rem;color:#ffffff80}.mini-stat span:first-child{width:36px;flex-shrink:0}.stat-bar{flex:1;height:4px;background:#ffffff1a;border-radius:2px;overflow:hidden}.stat-fill{height:100%;border-radius:2px;transition:width .3s ease}.bike-badge{display:inline-block;font-size:.7rem;font-weight:600;padding:.2rem .5rem;border-radius:4px;margin-top:.25rem}.selected-badge{background:#2ecc7133;color:#2ecc71}.owned-badge{background:#3498db33;color:#3498db}.price-badge{background:#f1c40f26;color:#f1c40f}.shop-card::-webkit-scrollbar{width:6px}.shop-card::-webkit-scrollbar-track{background:transparent}.shop-card::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}@media(max-width:500px){.menu-card,.pause-card,.gameover-card,.shop-card{padding:1.25rem}.game-logo h1{font-size:1.5rem}.bike-grid{grid-template-columns:1fr}.menu-stats{flex-wrap:wrap}}