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1px,transparent 1px);background-size:100px 100px,150px 150px,200px 200px,250px 250px;animation:starfield 20s linear infinite}@keyframes starfield{0%{transform:translateY(0)}to{transform:translateY(100px)}}.hud{position:absolute;inset:0;pointer-events:none;z-index:10;color:#fff;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.7)}.hud-level-center{position:absolute;top:20px;left:50%;transform:translate(-50%);font-size:1.5rem;color:#00d4ff;background:#00000080;padding:10px 20px;border-radius:10px;border:2px solid #00d4ff;text-align:center}.hud-timer-right{position:absolute;top:20px;right:20px;font-size:1.2rem;color:#ffeb3b;background:#00000080;padding:10px 15px;border-radius:8px}.hud-bottom{position:absolute;bottom:20px;right:20px}.heart{animation:heartbeat 1.5s ease-in-out infinite}@keyframes heartbeat{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.hud-level{font-size:1.5rem;color:#00d4ff;background:#00000080;padding:10px 20px;border-radius:10px;border:2px solid #00d4ff}.hud-timer{font-size:1.2rem;color:#ffeb3b;background:#00000080;padding:10px 15px;border-radius:8px}.hud-coins{font-size:1.2rem;color:gold;background:#00000080;padding:10px 15px;border-radius:8px}.power-up-message{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:linear-gradient(135deg,#9c27b0,#673ab7);color:#fff;padding:2rem;border-radius:15px;text-align:center;z-index:20;animation:powerUpPulse .5s ease-in-out;border:3px solid #e91e63;box-shadow:0 0 30px #9c27b099}@keyframes powerUpPulse{0%{transform:translate(-50%,-50%) scale(.8);opacity:0}50%{transform:translate(-50%,-50%) scale(1.1)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.power-up-message h3{margin:0 0 10px;font-size:1.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.7)}.power-up-message p{margin:0;font-size:1rem}.super-shake-indicator{position:absolute;top:100px;right:20px;background:linear-gradient(135deg,#9c27b0,#673ab7);color:#fff;padding:10px 20px;border-radius:25px;font-weight:700;z-index:15;animation:superShakeGlow 1s ease-in-out infinite alternate;border:2px solid #e91e63}@keyframes superShakeGlow{0%{box-shadow:0 0 10px #9c27b099}to{box-shadow:0 0 20px #9c27b0}}.game-world{position:relative;width:100%;height:100%}.player{position:absolute;font-size:30px;z-index:5;transition:all .1s ease;filter:drop-shadow(0 0 10px rgba(0,212,255,.7))}@keyframes playerFloat{0%{transform:translateY(0)}to{transform:translateY(-5px)}}.player.super-shake{animation:superShakePlayer .1s ease-in-out infinite;filter:drop-shadow(0 0 15px rgba(156,39,176,.9))}@keyframes superShakePlayer{0%{transform:translateY(0) scale(1)}25%{transform:translateY(-2px) scale(1.1)}50%{transform:translateY(0) scale(1)}75%{transform:translateY(2px) scale(1.1)}to{transform:translateY(0) scale(1)}}@keyframes invincibilityBlink{0%{opacity:.3}to{opacity:.8}}.asteroid{position:absolute;font-size:inherit;z-index:3;transition:transform .1s ease;filter:drop-shadow(0 0 5px 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ease;z-index:15;pointer-events:auto}.game-back-button:hover{background:linear-gradient(135deg,#ee5a24,#ff6b6b);transform:translateY(-2px);box-shadow:0 10px 20px #0000004d}.game-over{min-height:100vh;background:linear-gradient(135deg,#0f0f23,#1a1a2e,#16213e);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.game-over:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(255,255,255,.1) 1px,transparent 1px),radial-gradient(circle at 80% 80%,rgba(255,255,255,.1) 1px,transparent 1px);background-size:100px 100px,150px 150px;animation:twinkle 3s infinite alternate}.game-over-container{text-align:center;z-index:1;position:relative;padding:3rem;background:#ffffff0d;border-radius:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);box-shadow:0 20px 40px #0000004d;max-width:500px;width:90%}.game-over-container h2{font-size:3rem;color:#ff6b6b;margin-bottom:2rem;text-shadow:0 0 20px rgba(255,107,107,.5);font-weight:700}.game-over-stats{margin-bottom:2rem}.game-over-stats p{font-size:1.2rem;color:#fff;margin:.5rem 0;font-weight:700}.game-over-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.game-over-buttons button{padding:1rem 2rem;font-size:1.1rem;border:none;border-radius:10px;cursor:pointer;transition:all .3s ease;font-weight:700;text-transform:uppercase;letter-spacing:1px}.game-over-buttons button:first-child{background:linear-gradient(135deg,#4caf50,#45a049);color:#fff}.game-over-buttons button:last-child{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.game-over-buttons button:hover{transform:translateY(-2px);box-shadow:0 10px 20px #0000004d}.player-hearts{position:absolute;display:flex;gap:2px;z-index:6;pointer-events:none;font-size:1rem}.player-hearts .heart{animation:heartbeat 1.5s ease-in-out infinite;filter:drop-shadow(0 0 3px rgba(255,255,255,.8))}@media (max-width: 768px){.hud-level-center{font-size:1.2rem;padding:8px 15px;top:15px}.hud-timer-right{font-size:1rem;padding:8px 12px;top:15px;right:15px}.hud-bottom{bottom:15px;right:15px}.hud-timer,.hud-coins{font-size:1rem;padding:8px 12px}.player-hearts{font-size:.8rem}.player,.asteroid,.power-up{font-size:24px}.game-over-container h2{font-size:2rem}.game-over-buttons{flex-direction:column;align-items:center}.game-over-buttons button{width:200px}}.game.nebula-bg{background:linear-gradient(135deg,#2c1810,#8b4513,peru 60%,#8b0000)}.game.nebula-bg:before{background-image:radial-gradient(circle at 30% 30%,rgba(255,0,255,.2) 1px,transparent 1px),radial-gradient(circle at 70% 70%,rgba(0,255,255,.15) 1px,transparent 1px);background-size:200px 200px,300px 300px;will-change:auto}.game.galaxy-bg{background:linear-gradient(135deg,#191970,indigo,#8a2be2 60%,#9400d3)}.game.galaxy-bg:before{background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.3) 1px,transparent 1px),radial-gradient(circle at 75% 75%,rgba(255,192,203,.2) 1px,transparent 1px);background-size:250px 250px,350px 350px;will-change:auto}.game.blackhole-bg{background:radial-gradient(circle at center,#000,#1a0033,#306 60%,#0f0f23)}.game.blackhole-bg:before{background-image:radial-gradient(circle at 50% 50%,rgba(255,255,255,.6) 1px,transparent 1px),radial-gradient(circle at 20% 80%,rgba(255,255,255,.08) 1px,transparent 1px);background-size:300px 300px,400px 400px;animation:blackhole-swirl 20s linear infinite;will-change:transform}.game.solar-bg{background:linear-gradient(135deg,#ff4500,#ff8c00,gold,orange,tomato)}.game.solar-bg:before{background-image:radial-gradient(circle at 40% 40%,rgba(255,255,255,.4) 1px,transparent 1px),radial-gradient(circle at 60% 60%,rgba(255,255,0,.3) 1px,transparent 1px);background-size:200px 200px,300px 300px;animation:solar-flare 12s ease-in-out infinite;will-change:opacity}.game.aurora-bg{background:linear-gradient(135deg,#012,#036,#048,#06a,#08c)}.game.aurora-bg:before{background-image:radial-gradient(circle at 30% 20%,rgba(0,255,150,.3) 1px,transparent 1px),radial-gradient(circle at 70% 80%,rgba(150,0,255,.2) 1px,transparent 1px);background-size:180px 180px,280px 280px;animation:aurora-dance 8s ease-in-out infinite alternate;will-change:opacity}@keyframes aurora-dance{0%{opacity:.6}to{opacity:1}}.game.cosmic-bg{background:linear-gradient(135deg,#1a0033,#306,#609,#90c,#c0f)}.game.cosmic-bg:before{background-image:radial-gradient(circle at 40% 40%,rgba(255,255,255,.4) 1px,transparent 1px),radial-gradient(circle at 20% 80%,rgba(255,0,255,.3) 1px,transparent 1px);background-size:150px 150px,250px 250px;animation:cosmic-storm 6s linear infinite;will-change:transform}@keyframes cosmic-storm{0%{transform:translate(0) translateY(0)}25%{transform:translate(10px) translateY(-5px)}50%{transform:translate(-5px) translateY(10px)}75%{transform:translate(-10px) translateY(-10px)}to{transform:translate(0) translateY(0)}}.game.void-bg{background:radial-gradient(circle at center,#000,#111 40%,#000)}.game.void-bg:before{background-image:radial-gradient(circle at 50% 50%,rgba(100,100,100,.1) 1px,transparent 1px);background-size:400px 400px;animation:void-pulse 4s ease-in-out infinite;will-change:opacity}@keyframes void-pulse{0%,to{opacity:.2}50%{opacity:.6}}.game.starfield-bg{background:linear-gradient(135deg,#001,#013,#002)}.game.starfield-bg:before{background-image:radial-gradient(circle at 10% 10%,rgba(255,255,255,.8) 1px,transparent 1px),radial-gradient(circle at 90% 90%,rgba(255,255,255,.6) 1px,transparent 1px),radial-gradient(circle at 50% 30%,rgba(255,255,255,.4) 1px,transparent 1px);background-size:100px 100px,150px 150px,200px 200px;animation:starfield-twinkle 3s infinite alternate;will-change:opacity}@keyframes starfield-twinkle{0%{opacity:.4}to{opacity:1}}.game.hyperspace-bg{background:linear-gradient(0deg,#003,#006,#00c,#33f,#66f)}.game.hyperspace-bg:before{background-image:linear-gradient(0deg,transparent 0%,rgba(255,255,255,.1) 50%,transparent 100%),linear-gradient(45deg,transparent 0%,rgba(255,255,255,.05) 50%,transparent 100%);background-size:50px 200px,100px 400px;animation:hyperspace-lines 2s linear infinite;will-change:transform}@keyframes hyperspace-lines{0%{transform:translateY(0)}to{transform:translateY(100px)}}.game-over.nebula-bg{background:linear-gradient(135deg,#2c1810,#8b4513,peru 60%,#8b0000)}.game-over.nebula-bg:before{background-image:radial-gradient(circle at 30% 30%,rgba(255,0,255,.3) 2px,transparent 2px),radial-gradient(circle at 70% 70%,rgba(0,255,255,.2) 1px,transparent 1px)}.game-over.galaxy-bg{background:linear-gradient(135deg,#191970,indigo,#8a2be2 60%,#9400d3)}.game-over.galaxy-bg:before{background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.4) 1px,transparent 1px),radial-gradient(circle at 75% 75%,rgba(255,192,203,.3) 2px,transparent 2px)}.game-over.blackhole-bg{background:radial-gradient(circle at center,#000,#1a0033,#306 60%,#0f0f23)}.game-over.blackhole-bg:before{background-image:radial-gradient(circle at 50% 50%,rgba(255,255,255,.8) 1px,transparent 1px),radial-gradient(circle at 20% 80%,rgba(255,255,255,.1) 1px,transparent 1px);animation:blackhole-swirl 15s linear infinite}.game-over.solar-bg{background:linear-gradient(135deg,#ff4500,#ff8c00,gold,orange,tomato)}.game-over.solar-bg:before{background-image:radial-gradient(circle at 40% 40%,rgba(255,255,255,.6) 2px,transparent 2px),radial-gradient(circle at 60% 60%,rgba(255,255,0,.4) 1px,transparent 1px);animation:solar-flare 10s ease-in-out infinite}.game-over.aurora-bg{background:linear-gradient(135deg,#012,#036,#063,#396,#6c9)}.game-over.aurora-bg:before{background-image:linear-gradient(90deg,transparent 0%,rgba(0,255,150,.3) 20%,rgba(0,150,255,.3) 40%,rgba(150,0,255,.3) 60%,rgba(255,0,150,.3) 80%,transparent 100%),radial-gradient(circle at 30% 70%,rgba(255,255,255,.1) 1px,transparent 1px);animation:aurora-wave 12s ease-in-out infinite}.game-over.cosmic-bg{background:linear-gradient(135deg,#1a0033,#306,#609,#90c,#c0f)}.game-over.cosmic-bg:before{background-image:radial-gradient(circle at 20% 20%,rgba(255,0,255,.4) 2px,transparent 2px),radial-gradient(circle at 80% 80%,rgba(0,255,255,.3) 1px,transparent 1px),radial-gradient(circle at 50% 50%,rgba(255,255,255,.2) 1px,transparent 1px);animation:cosmic-pulse 8s ease-in-out infinite}.game-over.void-bg{background:radial-gradient(circle at center,#000,#0a0a0a,#1a1a1a)}.game-over.void-bg:before{background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.05) 1px,transparent 1px),radial-gradient(circle at 75% 75%,rgba(100,100,100,.1) 1px,transparent 1px);animation:void-drift 25s linear infinite}.game-over.starfield-bg{background:linear-gradient(135deg,#001,#012)}.game-over.starfield-bg:before{background-image:radial-gradient(circle at 10% 10%,rgba(255,255,255,.8) 1px,transparent 1px),radial-gradient(circle at 30% 60%,rgba(255,255,255,.6) 1px,transparent 1px),radial-gradient(circle at 70% 20%,rgba(255,255,255,.7) 1px,transparent 1px),radial-gradient(circle at 90% 80%,rgba(255,255,255,.5) 1px,transparent 1px);background-size:200px 200px,300px 300px,250px 250px,400px 400px;animation:starfield-twinkle 20s linear infinite}.game-over.hyperspace-bg{background:linear-gradient(135deg,#013,#026,#039,#04c,#05f)}.game-over.hyperspace-bg:before{background-image:linear-gradient(0deg,transparent 0%,rgba(255,255,255,.1) 45%,rgba(255,255,255,.3) 50%,rgba(255,255,255,.1) 55%,transparent 100%),linear-gradient(45deg,transparent 0%,rgba(0,255,255,.1) 45%,rgba(0,255,255,.2) 50%,rgba(0,255,255,.1) 55%,transparent 100%);background-size:100px 100px,150px 150px;animation:hyperspace-stream 3s linear infinite}.power-up-message.nebula-bg{background:linear-gradient(135deg,#2c1810,#8b4513,peru 60%,#8b0000);border:3px solid #ff6b35;box-shadow:0 0 30px #ff6b3599}.power-up-message.galaxy-bg{background:linear-gradient(135deg,#191970,indigo,#8a2be2 60%,#9400d3);border:3px solid #ff69b4;box-shadow:0 0 30px #ff69b499}.power-up-message.blackhole-bg{background:radial-gradient(circle at center,#000,#1a0033,#306 60%,#0f0f23);border:3px solid #ffffff;box-shadow:0 0 30px #fff9}.power-up-message.solar-bg{background:linear-gradient(135deg,#ff4500,#ff8c00,gold,orange,tomato);border:3px solid #ffff00;box-shadow:0 0 30px #ff09}.power-up-message.aurora-bg{background:linear-gradient(135deg,#012,#036,#063,#396,#6c9);border:3px solid #00ff96;box-shadow:0 0 30px #00ff9699}.power-up-message.cosmic-bg{background:linear-gradient(135deg,#1a0033,#306,#609,#90c,#c0f);border:3px solid #ff00ff;box-shadow:0 0 30px #f0f9}.power-up-message.void-bg{background:radial-gradient(circle at center,#000,#0a0a0a,#1a1a1a);border:3px solid #666666;box-shadow:0 0 30px #6669}.power-up-message.starfield-bg{background:linear-gradient(135deg,#001,#012);border:3px solid #ffffff;box-shadow:0 0 30px #fffc}.power-up-message.hyperspace-bg{background:linear-gradient(135deg,#013,#026,#039,#04c,#05f);border:3px solid #00ffff;box-shadow:0 0 30px #0ff9}.shop{min-height:100vh;background:linear-gradient(135deg,#0f0f23,#1a1a2e,#16213e);position:relative;overflow-x:hidden;padding:20px}.shop:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(255,255,255,.1) 1px,transparent 1px),radial-gradient(circle at 80% 80%,rgba(255,255,255,.1) 1px,transparent 1px);background-size:100px 100px,150px 150px;animation:twinkle 3s infinite alternate}.shop-container{max-width:1200px;margin:0 auto;position:relative;z-index:1}.shop-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;background:#ffffff0d;border-radius:15px;padding:1.5rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}.shop-header h1{font-size:2.5rem;color:#00d4ff;margin:0;text-shadow:0 0 20px rgba(0,212,255,.5);font-weight:700}.shop-coins{font-size:1.5rem;color:gold;font-weight:700;background:#ffd7001a;padding:10px 20px;border-radius:25px;border:2px solid #ffd700}.shop-tabs{display:flex;gap:10px;margin-bottom:2rem;flex-wrap:wrap}.tab{background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:25px;padding:12px 24px;color:#fff;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.tab:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.tab:hover:before{left:100%}.tab:hover{transform:translateY(-2px);box-shadow:0 10px 20px #0000004d}.tab.active{background:linear-gradient(135deg,#ff6b6b,#ee5a24);transform:translateY(-2px);box-shadow:0 10px 20px #0000004d}.shop-content{background:#ffffff0d;border-radius:15px;padding:2rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);margin-bottom:2rem}.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.shop-item{background:#ffffff1a;border:2px solid rgba(255,255,255,.2);border-radius:15px;padding:1.5rem;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;overflow:hidden}.shop-item:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s}.shop-item:hover:before{left:100%}.shop-item:hover{transform:translateY(-5px);box-shadow:0 15px 30px #0000004d;border-color:#00d4ff}.shop-item.owned{border-color:#4caf50;background:#4caf501a}.shop-item.selected{border-color:#ff6b6b;background:#ff6b6b1a;animation:selectedGlow 2s ease-in-out infinite alternate}@keyframes selectedGlow{0%{box-shadow:0 0 10px #ff6b6b80}to{box-shadow:0 0 20px #ff6b6bcc}}.item-preview{margin-bottom:1rem;position:relative}.item-emoji{font-size:3rem;display:block;animation:itemFloat 2s ease-in-out infinite alternate}@keyframes itemFloat{0%{transform:translateY(0)}to{transform:translateY(-5px)}}.background-preview{width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;animation:itemFloat 2s ease-in-out infinite alternate}.background-preview.default{background:linear-gradient(135deg,#0f0f23,#1a1a2e)}.background-preview.nebula{background:linear-gradient(135deg,#ff006e,#8338ec)}.background-preview.galaxy{background:linear-gradient(135deg,#4361ee,#7209b7)}.background-preview.blackhole{background:radial-gradient(circle,#000,#434343)}.background-preview.solar{background:linear-gradient(135deg,#ff9500,#ff5722)}.item-info{margin-bottom:1rem;flex-grow:1}.item-info h3{color:#fff;font-size:1.2rem;margin:0 0 .5rem;font-weight:700}.item-price{color:gold;font-size:1rem;font-weight:700;margin:0}.item-actions{width:100%}.buy-button,.select-button{width:100%;padding:12px;border:none;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:1px}.buy-button{background:linear-gradient(135deg,#4caf50,#45a049);color:#fff}.buy-button:hover:not(:disabled){background:linear-gradient(135deg,#45a049,#4caf50);transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.buy-button:disabled{background:#666;cursor:not-allowed;opacity:.5}.select-button{background:linear-gradient(135deg,#2196f3,#1976d2);color:#fff}.select-button:hover:not(:disabled){background:linear-gradient(135deg,#1976d2,#2196f3);transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.select-button.selected{background:linear-gradient(135deg,#ff6b6b,#ee5a24)}.select-button:disabled{cursor:not-allowed}.owned-text{display:block;color:#4caf50;font-weight:700;padding:12px;text-align:center;background:#4caf501a;border-radius:8px;text-transform:uppercase;letter-spacing:1px}.back-button{background:linear-gradient(135deg,#ff6b6b,#ee5a24);border:none;border-radius:10px;padding:15px 30px;color:#fff;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}@media (max-width: 768px){.shop{padding:10px}.shop-header{flex-direction:column;gap:1rem;text-align:center}.shop-header h1{font-size:2rem}.shop-tabs{justify-content:center}.tab{font-size:.9rem;padding:10px 15px}.shop-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}.shop-content,.shop-item{padding:1rem}}.shop.nebula-bg{background:linear-gradient(135deg,#2c1810,#8b4513,peru 60%,#8b0000)}.shop.nebula-bg:before{background-image:radial-gradient(circle at 30% 30%,rgba(255,0,255,.3) 2px,transparent 2px),radial-gradient(circle at 70% 70%,rgba(0,255,255,.2) 1px,transparent 1px)}.shop.galaxy-bg{background:linear-gradient(135deg,#191970,indigo,#8a2be2 60%,#9400d3)}.shop.galaxy-bg:before{background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.4) 1px,transparent 1px),radial-gradient(circle at 75% 75%,rgba(255,192,203,.3) 2px,transparent 2px)}.shop.blackhole-bg{background:radial-gradient(circle at center,#000,#1a0033,#306 60%,#0f0f23)}.shop.blackhole-bg:before{background-image:radial-gradient(circle at 50% 50%,rgba(255,255,255,.8) 1px,transparent 1px),radial-gradient(circle at 20% 80%,rgba(255,255,255,.1) 1px,transparent 1px);animation:blackhole-swirl 15s linear infinite}.shop.solar-bg{background:linear-gradient(135deg,#ff4500,#ff8c00,gold,orange,tomato)}.shop.solar-bg:before{background-image:radial-gradient(circle at 40% 40%,rgba(255,255,255,.6) 2px,transparent 2px),radial-gradient(circle at 60% 60%,rgba(255,255,0,.4) 1px,transparent 1px);animation:solar-flare 10s ease-in-out infinite}.shop.aurora-bg{background:linear-gradient(135deg,#012,#036,#063,#396,#6c9)}.shop.aurora-bg:before{background-image:linear-gradient(90deg,transparent 0%,rgba(0,255,150,.3) 20%,rgba(0,150,255,.3) 40%,rgba(150,0,255,.3) 60%,rgba(255,0,150,.3) 80%,transparent 100%),radial-gradient(circle at 30% 70%,rgba(255,255,255,.1) 1px,transparent 1px);animation:aurora-wave 12s ease-in-out infinite}.shop.cosmic-bg{background:linear-gradient(135deg,#1a0033,#306,#609,#90c,#c0f)}.shop.cosmic-bg:before{background-image:radial-gradient(circle at 20% 20%,rgba(255,0,255,.4) 2px,transparent 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ease}.back-button:hover{background:linear-gradient(135deg,#ee5a24,#ff6b6b);transform:translateY(-2px);box-shadow:0 10px 20px #0000004d}@media (max-width: 768px){.controls-title{font-size:2rem}.controls-options{grid-template-columns:1fr;gap:1.5rem}.control-option{padding:1.5rem}.control-icon{font-size:2.5rem}}.controls-selection.nebula-bg{background:linear-gradient(135deg,#2c1810,#8b4513,peru 60%,#8b0000)}.controls-selection.nebula-bg:before{background-image:radial-gradient(circle at 30% 30%,rgba(255,0,255,.3) 2px,transparent 2px),radial-gradient(circle at 70% 70%,rgba(0,255,255,.2) 1px,transparent 1px)}.controls-selection.galaxy-bg{background:linear-gradient(135deg,#191970,indigo,#8a2be2 60%,#9400d3)}.controls-selection.galaxy-bg:before{background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.4) 1px,transparent 1px),radial-gradient(circle at 75% 75%,rgba(255,192,203,.3) 2px,transparent 2px)}.controls-selection.blackhole-bg{background:radial-gradient(circle at 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infinite}.controls-selection.starfield-bg{background:linear-gradient(135deg,#001,#012)}.controls-selection.starfield-bg:before{background-image:radial-gradient(circle at 10% 10%,rgba(255,255,255,.8) 1px,transparent 1px),radial-gradient(circle at 30% 60%,rgba(255,255,255,.6) 1px,transparent 1px),radial-gradient(circle at 70% 20%,rgba(255,255,255,.7) 1px,transparent 1px),radial-gradient(circle at 90% 80%,rgba(255,255,255,.5) 1px,transparent 1px);background-size:200px 200px,300px 300px,250px 250px,400px 400px;animation:starfield-twinkle 20s linear infinite}.controls-selection.hyperspace-bg{background:linear-gradient(135deg,#013,#026,#039,#04c,#05f)}.controls-selection.hyperspace-bg:before{background-image:linear-gradient(0deg,transparent 0%,rgba(255,255,255,.1) 45%,rgba(255,255,255,.3) 50%,rgba(255,255,255,.1) 55%,transparent 100%),linear-gradient(45deg,transparent 0%,rgba(0,255,255,.1) 45%,rgba(0,255,255,.2) 50%,rgba(0,255,255,.1) 55%,transparent 100%);background-size:100px 100px,150px 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