*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#000;font-family:monospace}#game-container{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#000}#game-canvas{display:block}#ui-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}#ui-overlay.active{pointer-events:auto}.hidden{display:none!important}.crt-active #game-canvas{image-rendering:pixelated;image-rendering:crisp-edges}.crt-active #game-container{background:#111}.crt-active #game-container:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.15) 2px,rgba(0,0,0,.15) 4px);pointer-events:none;z-index:10}.crt-active #game-canvas{filter:brightness(1.1) contrast(1.1);box-shadow:0 0 60px #0064c826,0 0 120px #0064c80d}.crt-active #game-container{border-radius:20px;overflow:hidden}@keyframes crt-flicker{0%{opacity:0}5%{opacity:.8}10%{opacity:.2}15%{opacity:.9}20%{opacity:1}to{opacity:1}}.crt-active.crt-boot #game-canvas{animation:crt-flicker .5s ease-out}.modern-active #game-container{background:linear-gradient(180deg,#1a0a00,#2d1200)}.modern-active #game-canvas{image-rendering:auto}.modern-ui-panel{position:absolute;background:#000000d9;border:1px solid rgba(200,150,50,.4);border-radius:8px;padding:20px;color:#e8d5b0;font-family:Georgia,serif;pointer-events:auto}.modern-ui-panel h2{color:gold;font-size:24px;margin-bottom:12px;text-shadow:0 0 10px rgba(255,215,0,.3)}.level-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;padding:16px}.level-card{background:#321e0acc;border:2px solid #5a3a1a;border-radius:8px;padding:12px;text-align:center;cursor:pointer;transition:all .2s}.level-card:hover{border-color:gold;transform:scale(1.05)}.level-card.locked{opacity:.4;cursor:not-allowed}.level-card .stars{color:gold;font-size:14px;margin-top:4px}.reaction-bar{position:absolute;bottom:20px;left:50%;transform:translate(-50%);width:300px;height:8px;background:#0009;border-radius:4px;overflow:hidden}.reaction-bar-fill{height:100%;background:linear-gradient(90deg,#f44,#fa0,#4f4);transition:width .1s}@keyframes score-popup{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-60px) scale(1.5)}}.score-popup{position:absolute;color:gold;font-size:28px;font-weight:700;text-shadow:0 0 10px rgba(255,215,0,.5);animation:score-popup 1s ease-out forwards;pointer-events:none}