:root{--iron-red: #c0392b;--iron-red-dark: #7f1d1d;--iron-gold: #f39c12;--iron-gold-dark: #b7791f;--arc-blue: #00d4ff;--arc-blue-glow: rgba(0, 212, 255, .4);--bg-dark: #0a0a1a;--bg-panel: rgba(10, 10, 30, .95);--text-primary: #ffffff;--text-secondary: #94a3b8}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg-dark);color:var(--text-primary)}.game-container{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:#000}.game-container canvas{max-width:100%;max-height:100%}.menu-screen{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.menu-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,#0a0a2e,#1a0a2e,#0a0a2e);z-index:0}.menu-bg:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 20% 50%,rgba(192,57,43,.15) 0%,transparent 50%),radial-gradient(circle at 80% 50%,rgba(0,212,255,.1) 0%,transparent 50%)}.menu-content{position:relative;z-index:1;text-align:center;max-width:600px;padding:2rem}.iron-man-logo{width:120px;height:120px;margin:0 auto 2rem;position:relative}.helmet{width:100%;height:100%;background:linear-gradient(135deg,var(--iron-red) 0%,var(--iron-red-dark) 100%);border-radius:50% 50% 45% 45%;position:relative;border:3px solid var(--iron-gold);box-shadow:0 0 30px #c0392b80}.helmet-visor{position:absolute;top:35%;left:15%;right:15%;height:25%;background:linear-gradient(to right,var(--iron-gold-dark),var(--iron-gold));border-radius:0 0 20px 20px}.helmet-eye{position:absolute;top:35%;width:18%;height:15%;background:var(--arc-blue);box-shadow:0 0 15px var(--arc-blue),0 0 30px var(--arc-blue-glow);border-radius:3px}.helmet-eye.left{left:20%}.helmet-eye.right{right:20%}.game-title{font-size:4rem;font-weight:900;letter-spacing:.2em;background:linear-gradient(to bottom,var(--iron-gold),var(--iron-red));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:none;margin-bottom:.25rem}.game-subtitle{font-size:1.5rem;font-weight:300;letter-spacing:.5em;color:var(--arc-blue);margin-bottom:1.5rem}.game-desc{color:var(--text-secondary);line-height:1.6;margin-bottom:2rem;font-size:.95rem}.btn-primary{display:inline-block;padding:1rem 3rem;font-size:1.2rem;font-weight:700;letter-spacing:.1em;color:#fff;background:linear-gradient(135deg,var(--iron-red),var(--iron-red-dark));border:2px solid var(--iron-gold);border-radius:4px;cursor:pointer;transition:all .3s ease;text-transform:uppercase}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px #c0392b99;background:linear-gradient(135deg,#e74c3c,var(--iron-red))}.btn-secondary{display:inline-block;padding:.75rem 2rem;font-size:1rem;font-weight:600;letter-spacing:.05em;color:var(--text-secondary);background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:4px;cursor:pointer;transition:all .3s ease;margin-top:.75rem}.btn-secondary:hover{color:#fff;border-color:var(--arc-blue);background:#00d4ff1a}.controls-info{margin-top:2.5rem;text-align:left}.controls-info h3{font-size:.85rem;letter-spacing:.2em;color:var(--text-secondary);margin-bottom:1rem;text-align:center}.controls-grid{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;font-size:.85rem;color:var(--text-secondary)}.controls-grid div{display:flex;align-items:center;gap:.5rem}.key{display:inline-block;padding:.2rem .5rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:3px;font-family:monospace;font-size:.75rem;color:var(--arc-blue)}.gameover-screen{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a0a0a,#0a0a1a)}.gameover-content{text-align:center;padding:2rem}.gameover-title{font-size:3rem;font-weight:900;color:#e74c3c;letter-spacing:.1em;margin-bottom:2rem;text-shadow:0 0 20px rgba(231,76,60,.5)}.gameover-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-bottom:2rem;max-width:400px;margin-left:auto;margin-right:auto}.stat{display:flex;flex-direction:column;gap:.25rem}.stat-label{font-size:.8rem;color:var(--text-secondary);letter-spacing:.1em;text-transform:uppercase}.stat-value{font-size:2rem;font-weight:700;color:var(--iron-gold)}.gameover-buttons{display:flex;flex-direction:column;align-items:center;gap:.5rem}.pause-overlay{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.pause-content{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}.pause-content h1{font-size:3rem;letter-spacing:.3em;color:var(--arc-blue);margin-bottom:1rem}.shop-screen{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0a0a2e,#1a0a2e)}.shop-content{text-align:center;max-width:800px;padding:2rem}.shop-title{font-size:2.5rem;letter-spacing:.2em;color:var(--iron-gold);margin-bottom:.5rem}.shop-credits{font-size:1.2rem;color:var(--arc-blue);margin-bottom:2rem}.shop-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.shop-item{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:1.25rem;transition:all .3s ease}.shop-item:hover{border-color:var(--arc-blue);background:#00d4ff0d}.shop-item.maxed{opacity:.6}.shop-item-icon{font-size:2rem;margin-bottom:.5rem}.shop-item-name{font-weight:700;margin-bottom:.25rem}.shop-item-desc{font-size:.8rem;color:var(--text-secondary);margin-bottom:.75rem}.shop-item-level{color:var(--iron-gold);font-size:1.1rem;margin-bottom:.75rem}.btn-upgrade{padding:.5rem 1.25rem;font-size:.85rem;font-weight:600;border:1px solid;border-radius:4px;cursor:pointer;transition:all .2s ease;background:transparent}.btn-upgrade.affordable{color:var(--arc-blue);border-color:var(--arc-blue)}.btn-upgrade.affordable:hover{background:#00d4ff33}.btn-upgrade.expensive{color:#666;border-color:#333;cursor:not-allowed}.btn-upgrade:disabled{opacity:.5;cursor:not-allowed}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes glow{0%,to{box-shadow:0 0 20px var(--arc-blue-glow)}50%{box-shadow:0 0 40px var(--arc-blue-glow)}}.btn-primary{animation:glow 2s ease-in-out infinite}