:root{--neon-cyan: #00f3ff;--neon-pink: #ff0055;--neon-purple: #bc13fe;--neon-yellow: #ffcc00;--dark-bg: #050510}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;touch-action:none}body{margin:0;overflow:hidden;background:#000;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:#fff}.app-container{display:flex;justify-content:center;align-items:center;width:100vw;height:100vh;background:radial-gradient(circle at center,#0a0a2a,#000)}.cloud-sync-badge{position:absolute;top:15px;right:20px;z-index:100;display:flex;align-items:center;gap:6px;font-size:12px;color:#fffc;background:#00f3ff1a;border:1px solid rgba(0,243,255,.3);padding:6px 12px;border-radius:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);box-shadow:0 0 10px #00f3ff33}.game-area{position:relative;width:100%;max-width:500px;height:100%;max-height:850px;background:var(--dark-bg);overflow:hidden;box-shadow:0 0 50px #00f3ff26;border-left:1px solid rgba(0,243,255,.2);border-right:1px solid rgba(0,243,255,.2)}.space-background{position:absolute;top:0;right:0;bottom:0;left:0;z-index:0}.stars{position:absolute;top:-100%;left:0;right:0;height:200%;background-image:radial-gradient(2px 2px at 20px 30px,#eee,#0000),radial-gradient(2px 2px at 40px 70px,#fff,#0000),radial-gradient(2px 2px at 50px 160px,#ddd,#0000),radial-gradient(2px 2px at 90px 40px,#fff,#0000),radial-gradient(2px 2px at 130px 80px,#fff,#0000);background-size:200px 200px}.layer1{animation:starsScroll 10s linear infinite;opacity:.5}.layer2{background-size:300px 300px;animation:starsScroll 5s linear infinite;opacity:.8}.nebula{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 50% 50%,rgba(188,19,254,.15) 0%,transparent 60%);animation:pulseNebula 4s ease-in-out infinite alternate}.flying .layer1{animation-duration:3s}.flying .layer2{animation-duration:1.5s}@keyframes starsScroll{0%{transform:translateY(0)}to{transform:translateY(50%)}}@keyframes pulseNebula{0%{transform:scale(1);opacity:.5}to{transform:scale(1.2);opacity:1}}.player-wrapper,.enemy-wrapper{position:absolute;transform:translate(-50%,-50%);width:60px;height:60px;display:flex;justify-content:center;align-items:center;will-change:left,top;z-index:10}.entity-img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 5px 10px rgba(0,0,0,.8))}.fallback-emoji{font-size:40px;line-height:1}.player-wrapper{filter:drop-shadow(0 0 15px rgba(0,243,255,.6))}.invincible{animation:flash .15s infinite alternate}@keyframes flash{0%{opacity:1}to{opacity:.2}}.shield-bubble{position:absolute;width:80px;height:80px;border-radius:50%;border:2px solid var(--neon-yellow);background:#fc03;box-shadow:0 0 20px var(--neon-yellow);animation:shieldPulse 1s infinite alternate}@keyframes shieldPulse{0%{transform:scale(1);opacity:.8}to{transform:scale(1.1);opacity:1}}.engine-glow{position:absolute;bottom:-15px;width:12px;height:25px;background:var(--neon-cyan);border-radius:50%;filter:blur(5px);animation:engineFlicker .05s infinite alternate}@keyframes engineFlicker{0%{transform:scaleY(1);opacity:.8}to{transform:scaleY(1.5);opacity:1}}.enemy-img-wrapper{width:100%;height:100%;display:flex;justify-content:center;align-items:center}.filter-basic{filter:hue-rotate(0deg)}.filter-fast{filter:hue-rotate(90deg);transform:scale(.8)}.filter-tank{filter:hue-rotate(270deg);transform:scale(1.3)}.type-basic{filter:drop-shadow(0 0 10px rgba(255,0,85,.5))}.type-fast{filter:drop-shadow(0 0 10px rgba(0,255,100,.5))}.type-tank{filter:drop-shadow(0 0 15px rgba(188,19,254,.5))}.hp-bar-container{position:absolute;top:-10px;width:80%;height:4px;background:#fff3;border-radius:2px;overflow:hidden}.hp-bar-fill{height:100%;background:var(--neon-pink);transition:width .2s}.bullet{position:absolute;transform:translate(-50%,-50%);width:12px;height:24px;display:flex;justify-content:center;align-items:center;will-change:top,left;z-index:5}.bullet-img{width:100%;height:100%;object-fit:contain}.player-bullet{filter:drop-shadow(0 0 8px var(--neon-cyan))}.enemy-bullet{filter:drop-shadow(0 0 8px var(--neon-pink))}.pickup-item{position:absolute;transform:translate(-50%,-50%);width:40px;height:40px;display:flex;justify-content:center;align-items:center;border-radius:50%;animation:floatPickup 2s infinite ease-in-out;z-index:8}.pickup-bg{position:absolute;width:100%;height:100%;opacity:.4;object-fit:cover;border-radius:50%}.pickup-icon{position:relative;z-index:2;filter:drop-shadow(0 0 5px currentColor)}.type-upgrade{background:#00f3ff33;border:2px solid var(--neon-cyan);box-shadow:0 0 15px var(--neon-cyan)}.type-shield{background:#fc03;border:2px solid var(--neon-yellow);box-shadow:0 0 15px var(--neon-yellow)}.type-bomb{background:#f053;border:2px solid var(--neon-pink);box-shadow:0 0 15px var(--neon-pink)}@keyframes floatPickup{0%,to{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.1)}}.explosion{position:absolute;transform:translate(-50%,-50%);width:90px;height:90px;pointer-events:none;z-index:15;animation:boom .4s ease-out forwards}.explosion img{width:100%;height:100%;object-fit:contain}@keyframes boom{0%{transform:translate(-50%,-50%) scale(.2);opacity:1}to{transform:translate(-50%,-50%) scale(1.8);opacity:0}}.hud-layer{position:absolute;top:0;left:0;right:0;padding:20px;display:flex;justify-content:space-between;align-items:flex-start;pointer-events:none;z-index:20}.hud-left,.hud-right{display:flex;flex-direction:column;gap:10px}.hud-right{align-items:flex-end}.score-display{font-size:36px;font-weight:900;font-family:Impact,sans-serif;text-shadow:0 0 15px var(--neon-cyan);line-height:1}.level-badge{background:#bc13fe4d;border:1px solid var(--neon-purple);padding:4px 10px;border-radius:12px;font-size:14px;font-weight:700;color:#fff;box-shadow:0 0 10px #bc13fe80}.lives-display{display:flex;gap:6px;background:#0009;padding:8px 12px;border-radius:20px;border:1px solid rgba(255,0,85,.4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.life-active{color:var(--neon-pink);filter:drop-shadow(0 0 5px var(--neon-pink))}.life-lost{color:#444}.weapon-status{display:flex;align-items:center;gap:8px;background:#0009;padding:6px 12px;border-radius:15px;border:1px solid rgba(0,243,255,.4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.weapon-bars{display:flex;gap:4px}.w-bar{width:8px;height:12px;background:#333;border-radius:2px}.w-bar.active{background:var(--neon-cyan);box-shadow:0 0 8px var(--neon-cyan)}.overlay-screen{position:absolute;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;justify-content:center;align-items:center;background:#050510d9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.menu-box{background:#0f0f1ee6;border:2px solid var(--neon-cyan);border-radius:20px;padding:40px;text-align:center;box-shadow:0 0 40px #00f3ff33,inset 0 0 20px #00f3ff33;min-width:320px}.neon-title{font-family:Impact,sans-serif;font-size:56px;margin:0 0 20px;line-height:1;color:#fff;text-shadow:0 0 10px var(--neon-cyan),0 0 20px var(--neon-cyan),0 0 40px var(--neon-cyan);letter-spacing:4px}.gameover-title{font-family:Impact,sans-serif;font-size:46px;color:var(--neon-pink);text-shadow:0 0 20px var(--neon-pink);margin:0 0 20px}.high-score-box{display:inline-flex;align-items:center;gap:10px;background:#00000080;padding:10px 20px;border-radius:30px;font-size:16px;color:#ddd;margin-bottom:20px;border:1px solid #ffcc0044}.text-yellow{color:#fc0}.text-cyan{color:var(--neon-cyan)}.text-purple{color:var(--neon-purple)}.features-hint{display:flex;justify-content:center;gap:15px;margin-bottom:25px}.f-item{display:flex;align-items:center;gap:5px;font-size:13px;color:#aaa;background:#ffffff0d;padding:6px 10px;border-radius:8px}.controls-hint{font-size:14px;color:#888;line-height:1.8;margin-bottom:30px;display:flex;flex-direction:column;align-items:center;gap:8px}.neon-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:transparent;color:var(--neon-cyan);border:2px solid var(--neon-cyan);padding:16px 32px;font-size:18px;font-weight:700;border-radius:12px;cursor:pointer;transition:all .2s;box-shadow:0 0 15px #00f3ff33 inset;width:100%}.neon-btn:hover:not(:disabled){background:var(--neon-cyan);color:#000;box-shadow:0 0 25px var(--neon-cyan);transform:scale(1.05)}.neon-btn:disabled{border-color:#555;color:#555;cursor:not-allowed;box-shadow:none}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-bottom:25px}.stat-item{background:#0006;padding:15px;border-radius:12px;display:flex;flex-direction:column;gap:5px;border:1px solid rgba(255,255,255,.1)}.stat-item .label{font-size:12px;color:#888}.stat-item .value{font-size:28px;font-weight:700;font-family:Impact,sans-serif}.new-record-text{color:var(--neon-cyan);font-size:15px;margin-bottom:20px;animation:pulse 1s infinite;font-weight:700}@keyframes pulse{0%,to{opacity:.8}50%{opacity:1;transform:scale(1.05)}}