:root{--bg-color: #050510;--bg-dark: #000000;--bg-panel: #1a1a2e;--bg-panel-gradient-start: #1a1a2e;--bg-panel-gradient-end: #0f0f1e;--neon-blue: #00f3ff;--neon-pink: #ff00ff;--neon-green: #00ff00;--neon-red: #ff0000;--neon-gold: #ffd700;--neon-orange: #ffaa00;--text-color: #ffffff;--text-muted: rgba(255, 255, 255, .7);--text-dim: rgba(255, 255, 255, .5);--text-faint: rgba(255, 255, 255, .3);--font-main: "Rajdhani", sans-serif;--font-display: "Press Start 2P", cursive;--font-mono: monospace;--space-xs: 5px;--space-sm: 10px;--space-md: 20px;--space-lg: 30px;--space-xl: 40px;--space-xxl: 60px;--z-background: 1;--z-scanline: 2;--z-game: 5;--z-ui: 20;--z-modal: 1000;--z-overlay: 2000;--border-radius-sm: 5px;--border-radius-md: 10px;--border-thin: 1px solid var(--neon-blue);--border-thick: 2px solid var(--neon-blue);--transition-fast: .2s;--transition-normal: .3s;--transition-slow: .5s;--toolbar-height: 44px;--toolbar-height-mobile: 40px;--aspect-ratio: 9 / 16;--viewport-width: 540px;--viewport-height: 960px}body{margin:0;padding:0;background-color:var(--bg-color);background-image:url(/background_stars.png);background-size:cover;background-position:center;background-repeat:no-repeat;color:var(--text-color);font-family:var(--font-main);overflow:hidden;display:flex;justify-content:center;align-items:center;height:100vh}canvas{display:block;width:100%;height:100%}.hidden{display:none!important}h1,h2{font-family:var(--font-display);color:var(--neon-pink);text-shadow:0 0 10px var(--neon-pink);margin-bottom:40px;text-align:center;line-height:1.5}h3{font-family:var(--font-display);font-size:12px;color:var(--neon-blue);text-shadow:0 0 5px var(--neon-blue);margin-bottom:10px}#game-container{position:fixed;top:0;left:0;width:100vw;height:100vh;height:100dvh;background:#000;overflow:hidden}#game-canvas{position:absolute;top:0;left:0;image-rendering:pixelated;image-rendering:crisp-edges}footer{display:none}#version-display{position:fixed;bottom:max(20px,env(safe-area-inset-bottom,20px));left:max(20px,env(safe-area-inset-left,20px));font-family:var(--font-main);font-size:16px;color:#ffffff80;z-index:100}button{background:transparent;border:2px solid var(--neon-blue);color:var(--neon-blue);padding:15px 30px;font-family:var(--font-display);font-size:16px;cursor:pointer;transition:all .2s;text-transform:uppercase;box-shadow:0 0 10px #00f3ff33}button:hover,button.selected{background:var(--neon-blue);color:var(--bg-color);box-shadow:0 0 20px var(--neon-blue)}.button-group{display:flex;gap:20px;margin-top:20px}.secondary-btn{margin-top:15px;font-size:12px;padding:10px 20px;border-color:#00f3ff80;color:#00f3ffcc}.secondary-btn:hover{border-color:var(--neon-blue);color:#fff}.close-btn{position:absolute;top:15px;right:15px;background:transparent;border:none;color:var(--neon-pink);font-size:40px;cursor:pointer;transition:all .2s;padding:0;line-height:1;width:40px;height:40px;display:flex;align-items:center;justify-content:center;z-index:10;box-shadow:none}.close-btn:hover{color:var(--neon-red);transform:scale(1.2) rotate(90deg);text-shadow:0 0 15px var(--neon-red);background:transparent;box-shadow:none}.upgrade-card{background:#00f3ff1a;border:2px solid var(--neon-blue);padding:20px;width:200px;cursor:pointer;transition:all .2s;text-align:center;display:flex;flex-direction:column;align-items:center;opacity:0;transform:translateY(50px) rotateX(20deg);animation:cardEnter .5s forwards;position:relative;overflow:hidden}.upgrade-card:nth-child(2){animation-delay:.2s}.upgrade-card:nth-child(3){animation-delay:.3s}.upgrade-card:hover{transform:translateY(-10px) scale(1.05);box-shadow:0 0 25px var(--neon-green),inset 0 0 10px var(--neon-green);background:#00ff0026;z-index:10}.upgrade-card:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(45deg,transparent,rgba(255,255,255,.1),transparent);transform:rotate(45deg);animation:shine 3s infinite}.upgrade-title{font-family:var(--font-display);font-size:14px;color:var(--neon-green);margin-bottom:15px;text-shadow:0 0 5px var(--neon-green)}.upgrade-desc{font-size:14px;color:#fff;line-height:1.4}.upgrade-card.rare{border-color:var(--neon-pink);box-shadow:0 0 15px #ff00ff4d}.upgrade-card.rare-upgrade{border-color:var(--neon-orange);box-shadow:0 0 15px #ffaa004d}.upgrade-card.rare .upgrade-title{color:var(--neon-pink);text-shadow:0 0 10px var(--neon-gold)}.upgrade-card.rare-upgrade .upgrade-title{color:var(--neon-orange)}.upgrade-card.rare:before{background:linear-gradient(45deg,transparent,rgba(255,215,0,.4),transparent);animation:shine 2s infinite}.upgrade-card.selected{transform:translateY(-10px) scale(1.05);box-shadow:0 0 25px var(--neon-green),inset 0 0 10px var(--neon-green);background:#00ff0026;z-index:10}.upgrade-card.rare.selected{box-shadow:0 0 30px var(--neon-gold),inset 0 0 20px var(--neon-gold);background:#ffd70033;transform:translateY(-10px) scale(1.1)}.switch{position:relative;display:inline-block;width:60px;height:34px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#333;transition:.4s}.slider:before{position:absolute;content:"";height:26px;width:26px;left:4px;bottom:4px;background-color:#fff;transition:.4s}input:checked+.slider{background-color:var(--neon-blue);box-shadow:0 0 10px var(--neon-blue)}input:focus+.slider{box-shadow:0 0 1px var(--neon-blue)}input:checked+.slider:before{transform:translate(26px)}.slider.round{border-radius:34px}.slider.round:before{border-radius:50%}.volume-control input[type=range]{width:100%;height:6px;-webkit-appearance:none;appearance:none;background:#00f3ff4d;border-radius:3px;outline:none;margin:0;cursor:pointer}.volume-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;height:18px;width:18px;border-radius:50%;background:var(--neon-pink);box-shadow:0 0 10px var(--neon-pink);cursor:pointer;border:none;margin-top:0}.volume-control input[type=range]::-moz-range-thumb{height:18px;width:18px;border-radius:50%;background:var(--neon-pink);box-shadow:0 0 10px var(--neon-pink);cursor:pointer;border:none}.volume-control input[type=range]::-moz-range-track{height:6px;background:#00f3ff4d;border-radius:3px}#settings-modal,#changelog-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000e6;display:flex;justify-content:center;align-items:center;z-index:var(--z-modal);backdrop-filter:blur(5px);animation:fadeIn .3s ease-out}#settings-container,#changelog-container{position:relative;background:linear-gradient(135deg,var(--bg-panel-gradient-start) 0%,var(--bg-panel-gradient-end) 100%);border:2px solid var(--neon-blue);border-radius:10px;box-shadow:0 0 30px #00f3ff80,inset 0 0 20px #00f3ff1a;animation:slideIn .3s ease-out}.install-prompt{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:#050510f2;border:1px solid var(--primary-color, #00f3ff);border-radius:8px;padding:12px 16px;display:flex;align-items:center;gap:12px;z-index:9999;max-width:90vw;box-shadow:0 4px 20px #00f3ff33;animation:slideUp .3s ease-out}.install-prompt.hidden{display:none}.install-prompt-icon{font-size:24px;flex-shrink:0}.install-prompt-text{display:flex;flex-direction:column;gap:2px;min-width:0}.install-prompt-text strong{color:var(--primary-color, #00f3ff);font-family:Rajdhani,sans-serif;font-weight:700;font-size:.95em;white-space:nowrap}.install-prompt-instructions{font-size:.85em;color:#ccc;font-family:Rajdhani,sans-serif}.install-prompt-dismiss{background:transparent;border:none;color:#888;font-size:18px;cursor:pointer;padding:4px 8px;flex-shrink:0;transition:color .2s ease}.install-prompt-dismiss:hover{color:#fff}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(max-width:400px){.install-prompt{padding:10px 12px;gap:8px;bottom:10px}.install-prompt-icon{font-size:20px}.install-prompt-text strong{font-size:.85em}.install-prompt-instructions{font-size:.75em}}#game-toolbar{position:absolute;top:0;left:0;right:0;height:var(--toolbar-height);background:linear-gradient(180deg,#050510f2,#050510d9);border-bottom:1px solid var(--neon-blue);box-shadow:0 1px #00f3ff4d,0 2px 8px #00000080;display:flex;justify-content:space-between;align-items:flex-end;padding:0 2px 4px;box-sizing:border-box;z-index:var(--z-ui);padding-top:env(safe-area-inset-top,0);padding-left:max(2px,env(safe-area-inset-left));padding-right:max(2px,env(safe-area-inset-right))}@supports (padding-top: env(safe-area-inset-top)){#game-toolbar{height:calc(var(--toolbar-height) + env(safe-area-inset-top,0))}}.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:0}.toolbar-left button,.toolbar-left a{box-shadow:none;border:none;text-shadow:none}.toolbar-left button:hover,.toolbar-left a:hover{box-shadow:none;text-shadow:none}#game-toolbar button,#game-toolbar a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;margin:0;box-sizing:border-box;background:transparent;border:none;border-radius:6px;color:var(--neon-blue);font-size:16px;text-decoration:none;line-height:1;transition:all .15s ease;cursor:pointer;pointer-events:auto}#game-toolbar button:hover,#game-toolbar a:hover{background:#00f3ff26;color:#fff;text-shadow:0 0 8px var(--neon-blue);transform:scale(1.05)}#game-toolbar button:active,#game-toolbar a:active{transform:scale(.95);background:#00f3ff40}#game-toolbar #pause-btn{font-size:14px}@media(min-width:769px){#game-toolbar{padding:0 4px;padding-left:max(4px,env(safe-area-inset-left));padding-right:max(4px,env(safe-area-inset-right))}.toolbar-left,.toolbar-right{gap:0}#game-toolbar button,#game-toolbar a{width:40px;height:40px;font-size:18px}}@media(max-width:768px){#game-toolbar{height:var(--toolbar-height-mobile);padding:0 2px 2px;padding-left:max(2px,env(safe-area-inset-left));padding-right:max(2px,env(safe-area-inset-right))}@supports (padding-top: env(safe-area-inset-top)){#game-toolbar{height:calc(var(--toolbar-height-mobile) + env(safe-area-inset-top,0))}}.toolbar-left,.toolbar-right{gap:0}#game-toolbar button,#game-toolbar a{width:32px;height:32px;font-size:14px}}#game-container.toolbar-hidden #game-toolbar{display:none}#dev-tools-toggle.active{background:#00f3ff33;color:#fff;text-shadow:0 0 8px var(--neon-blue)}#ui-layer{position:absolute;top:calc(var(--toolbar-height) + env(safe-area-inset-top,0px));left:0;width:100%;height:calc(100% - var(--toolbar-height) - env(safe-area-inset-top,0px));pointer-events:none;padding:12px 20px;box-sizing:border-box;display:flex;justify-content:space-between;font-family:var(--font-display);font-size:16px;text-shadow:0 0 5px var(--neon-blue);z-index:var(--z-ui)}#health-container{position:absolute;top:8px;left:50%;transform:translate(-50%);width:300px;height:20px;background:#00000080;border:2px solid #fff;border-radius:10px;overflow:hidden}#health-bar{width:100%;height:100%;background:linear-gradient(90deg,red,#f40);transition:width .2s ease-out}#health-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:12px;text-shadow:1px 1px 0 #000;z-index:1}#reload-ui{position:fixed;bottom:80px;right:20px;display:flex;flex-direction:column;align-items:center;gap:4px;z-index:100}#reload-ammo-text{font-size:10px;font-family:var(--font-display);color:var(--neon-blue);text-shadow:0 0 5px var(--neon-blue);transition:color .2s ease,text-shadow .2s ease}#reload-ui.low #reload-ammo-text{color:var(--neon-orange);text-shadow:0 0 5px var(--neon-orange)}#reload-ui.reloading #reload-ammo-text{color:var(--neon-orange);text-shadow:0 0 5px var(--neon-orange);animation:reload-text-flash .5s ease-in-out infinite}@keyframes reload-text-flash{0%,to{opacity:1}50%{opacity:.5}}#reload-bar-container{display:flex;flex-direction:column;gap:3px;padding:4px;background:#0009;border:1px solid var(--neon-blue);border-radius:8px;box-shadow:0 0 8px #00f3ff4d;transition:border-color .2s ease,box-shadow .2s ease}#reload-ui.low #reload-bar-container{border-color:var(--neon-orange);box-shadow:0 0 8px #ffa5004d}#reload-ui.reloading #reload-bar-container{border-color:var(--neon-orange);box-shadow:0 0 8px #ffa5004d;animation:reload-border-flash .5s ease-in-out infinite}@keyframes reload-border-flash{0%,to{box-shadow:0 0 8px #ffa50080}50%{box-shadow:0 0 12px #ffa500cc}}.reload-pill{width:10px;height:8px;border-radius:3px;background:#00f3ff26;border:1px solid rgba(0,243,255,.3);transition:background .1s ease,box-shadow .1s ease,border-color .1s ease}.reload-pill.active{background:linear-gradient(to top,var(--neon-blue),#00ccff);border-color:var(--neon-blue);box-shadow:0 0 6px var(--neon-blue)}#reload-ui.low .reload-pill{background:#ffa50026;border:1px solid rgba(255,165,0,.3)}#reload-ui.low .reload-pill.active{background:linear-gradient(to top,var(--neon-orange),#ffcc00);border-color:var(--neon-orange);box-shadow:0 0 6px var(--neon-orange)}#reload-ui.reloading .reload-pill{background:#ffa50026;border:1px solid rgba(255,165,0,.3)}#reload-ui.reloading .reload-pill.active{background:linear-gradient(to top,var(--neon-orange),#ffcc00);border-color:var(--neon-orange);box-shadow:0 0 6px var(--neon-orange)}#reload-label{font-size:10px;font-family:var(--font-display);color:var(--neon-blue);text-shadow:0 0 5px var(--neon-blue);transition:color .2s ease,text-shadow .2s ease}#reload-ui.low #reload-label,#reload-ui.reloading #reload-label{color:var(--neon-orange);text-shadow:0 0 5px var(--neon-orange)}#score-display{display:flex;flex-direction:column;align-items:flex-start;gap:6px}.score-text{font-size:12px}.score-label{display:inline}.streak-text{font-size:10px;color:#ffffffb3}.score-icon{color:var(--neon-green);text-shadow:0 0 5px var(--neon-green)}#wave-display-mobile{position:absolute;top:8px;right:12px;display:flex;flex-direction:column;align-items:flex-end;gap:6px;z-index:25}#wave-display-mobile .wave-text{font-size:14px}#wave-timer-mobile{font-size:12px;color:#ffffffb3}#ui-layer #pause-btn{display:none}@media(min-aspect-ratio:4/3)and (min-width:769px){#ui-layer{padding:12px 30px}#health-container{width:350px}#wave-display-mobile{right:20px}#reload-ui{bottom:40px;right:30px}.reload-pill{width:12px;height:10px}}@media(max-width:768px){#ui-layer{top:calc(var(--toolbar-height-mobile) + env(safe-area-inset-top,0px));height:calc(100% - var(--toolbar-height-mobile) - env(safe-area-inset-top,0px));padding:8px 12px}#health-container{width:200px;top:6px}#wave-display-mobile{top:6px;right:8px}#reload-ui{bottom:60px;right:15px}#reload-ammo-text{font-size:8px}.reload-pill{width:8px;height:6px}#reload-bar-container{gap:2px;padding:3px}#reload-label{font-size:8px}}#start-screen,#game-over-screen,#upgrade-menu,#pause-screen,#win-screen,#wasm-error-screen{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000d9;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;z-index:10;backdrop-filter:blur(5px)}#wasm-error-screen{background:#1e0000f2;z-index:100}#wasm-error-screen h1{font-family:var(--font-display);font-size:20px;color:#f44;text-shadow:0 0 20px rgba(255,68,68,.5);margin-bottom:20px}#wasm-error-screen .error-message{font-family:var(--font-main);font-size:16px;color:#faa;max-width:500px;text-align:center;margin-bottom:20px;line-height:1.5}#wasm-error-screen .browser-requirements{font-family:var(--font-main);font-size:14px;color:#888;text-align:center;margin-bottom:30px;line-height:1.8}#wasm-error-screen .learn-more-btn{font-family:var(--font-display);font-size:12px;padding:12px 30px;background:transparent;border:2px solid #ff4444;color:#f44;text-decoration:none;cursor:pointer;transition:all .3s ease}#wasm-error-screen .learn-more-btn:hover{background:#f443;box-shadow:0 0 15px #f446}#upgrade-options{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;perspective:1000px}#pause-stats,#win-stats{text-align:center;margin-bottom:20px}#pause-stats h3,#win-stats h3{font-family:var(--font-display);font-size:12px;color:var(--neon-blue);text-shadow:0 0 5px var(--neon-blue);margin-bottom:10px}#pause-stats ul,#win-stats ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:500px}#pause-stats ul li,#win-stats ul li{background:#00f3ff1a;border:1px solid rgba(0,243,255,.3);padding:5px 10px;border-radius:4px;font-family:var(--font-main);font-size:14px;color:var(--neon-green)}#changelog-container{max-width:1000px;max-height:80vh;width:90%;height:600px;display:flex;overflow:hidden}#changelog-sidebar{width:250px;background:#00000080;border-right:2px solid var(--neon-blue);padding:60px 20px 20px;overflow-y:auto}#changelog-sidebar h2{font-family:var(--font-display);color:var(--neon-blue);text-shadow:0 0 8px var(--neon-blue);font-size:14px;margin-bottom:20px;margin-top:0}#changelog-list{list-style:none;padding:0;margin:0}.changelog-item{padding:15px;margin-bottom:10px;border:2px solid rgba(0,243,255,.3);border-radius:5px;cursor:pointer;transition:all .3s;background:#00f3ff0d}.changelog-item:hover{border-color:var(--neon-blue);background:#00f3ff26;transform:translate(5px);box-shadow:0 0 10px #00f3ff4d}.changelog-item.active{border-color:var(--neon-pink);background:#ff00ff26;box-shadow:0 0 15px #f0f6}.version-number{display:block;font-family:var(--font-display);font-size:12px;color:var(--neon-green);text-shadow:0 0 5px var(--neon-green);margin-bottom:5px}.changelog-item.active .version-number{color:var(--neon-pink);text-shadow:0 0 5px var(--neon-pink)}.version-date{font-family:var(--font-main);font-size:10px;color:#fff9}#changelog-content{flex:1;padding:60px 40px 40px;overflow-y:auto}#changelog-content::-webkit-scrollbar,#changelog-sidebar::-webkit-scrollbar{width:10px}#changelog-content::-webkit-scrollbar-track,#changelog-sidebar::-webkit-scrollbar-track{background:#00000080;border-radius:5px}#changelog-content::-webkit-scrollbar-thumb,#changelog-sidebar::-webkit-scrollbar-thumb{background:var(--neon-blue);border-radius:5px}#changelog-content::-webkit-scrollbar-thumb:hover,#changelog-sidebar::-webkit-scrollbar-thumb:hover{background:var(--neon-pink)}#changelog-text{font-family:var(--font-main);color:var(--text-color);line-height:1.6}#changelog-text h1{font-family:var(--font-display);color:var(--neon-pink);text-shadow:0 0 10px var(--neon-pink);font-size:20px;margin-bottom:30px;text-align:center}#changelog-text h2{font-family:var(--font-display);color:var(--neon-blue);text-shadow:0 0 8px var(--neon-blue);font-size:16px;margin-top:30px;margin-bottom:15px}#changelog-text h3{font-family:var(--font-main);color:var(--neon-green);text-shadow:0 0 5px var(--neon-green);font-size:18px;font-weight:700;margin-top:20px;margin-bottom:10px}#changelog-text h4{font-family:var(--font-main);color:#fff;font-size:16px;font-weight:700;margin-top:15px;margin-bottom:8px}#changelog-text ul{margin-left:20px;list-style:none}#changelog-text ul li{position:relative;padding-left:20px;margin-bottom:8px}#changelog-text ul li:before{content:"▸";position:absolute;left:0;color:var(--neon-blue)}#changelog-text p{margin-bottom:10px}#changelog-text strong{color:var(--neon-green);font-weight:700}#changelog-text hr{border:none;border-top:1px solid rgba(0,243,255,.3);margin:20px 0}#changelog-text code{background:#00f3ff1a;padding:2px 6px;border-radius:3px;color:var(--neon-green);font-family:monospace}#settings-screen{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000d9;backdrop-filter:blur(5px);display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;z-index:10;padding:60px 20px 20px;box-sizing:border-box;overflow-y:auto}#settings-screen.hidden{display:none}#settings-screen h1{font-family:var(--font-display);font-size:24px;color:var(--neon-blue);text-shadow:0 0 10px var(--neon-blue),0 0 20px var(--neon-blue);letter-spacing:3px;margin:0 0 5px}.settings-hint{font-family:var(--font-body);font-size:11px;color:#ffffff80;text-align:center;margin:0 0 15px}.settings-container{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:15px;max-width:600px;width:100%}.settings-section{display:flex;flex-direction:column;gap:8px}.settings-section h2{font-family:var(--font-display);font-size:12px;color:var(--neon-green);text-transform:uppercase;letter-spacing:2px;margin:0 0 5px;text-align:center;text-shadow:0 0 5px var(--neon-green)}.setting-row{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#0000004d;border:2px solid transparent;border-radius:4px;transition:all .2s ease;cursor:pointer}.setting-row.selected{background:#00f3ff26;border-color:var(--neon-blue);box-shadow:0 0 10px #00f3ff4d,inset 0 0 20px #00f3ff1a}.setting-row:hover{background:#00f3ff1a;border-color:#00f3ff80}.setting-label{font-family:var(--font-body);font-size:13px;color:#fff;font-weight:600;flex:1}.setting-hint-inline{display:block;font-size:10px;font-weight:400;color:#ffffff80;margin-top:2px}.toggle-switch{position:relative;display:block;width:50px;height:28px;cursor:pointer}.toggle-switch input{opacity:0;width:0;height:0}.toggle-switch .slider{position:absolute;cursor:pointer;inset:0;background-color:#fff3;border:1px 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