:root{--ui-opacity: .3}*{margin:0;padding:0;box-sizing:border-box;scrollbar-width:none;-ms-overflow-style:none}*::-webkit-scrollbar{display:none}body{background:#000;color:#fff;font-family:IBM Plex Mono,monospace;overflow:hidden;touch-action:manipulation}a{color:#ff9500;text-decoration:none}a:hover{color:#ffb143;text-decoration:underline}a:visited{color:#ff9500}#canvas{position:fixed;top:0;left:0;width:100vw;height:100vh;image-rendering:pixelated;image-rendering:-moz-crisp-edges;image-rendering:crisp-edges;touch-action:none;pointer-events:auto}#topbar{position:fixed;top:0;left:0;right:0;height:56px;background:rgba(0,0,0,var(--ui-opacity));border-bottom:1px solid #333;display:flex;align-items:center;padding:0 20px;z-index:100;pointer-events:auto;touch-action:manipulation}#topbar .title{color:#fff;font-size:14px;font-weight:700;margin-right:20px}#topbar .controls{display:flex;gap:10px;margin-left:auto;align-items:center}#topbar .controls-desktop{display:flex;gap:10px;align-items:center}#topbar .controls-mobile{display:none;gap:8px;align-items:center;margin-left:auto}#hamburger-menu{display:none;background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;width:36px;height:36px;padding:0;border-radius:4px;cursor:pointer;align-items:center;justify-content:center}#hamburger-menu:hover{background:rgba(255,255,255,.2)}#hamburger-menu svg{width:18px;height:18px}#mobile-menu{position:fixed;top:56px;right:-320px;width:320px;max-width:80vw;height:calc(100vh - 56px);background:rgba(0,0,0,var(--ui-opacity));-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);border-left:1px solid rgba(255,255,255,.1);z-index:150;transition:right .3s ease;overflow-y:auto;padding:20px;pointer-events:auto;touch-action:manipulation}#mobile-menu.open{right:0}#mobile-menu h3{color:#fff;font-size:16px;margin-bottom:20px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}.mobile-menu-section{margin-bottom:20px}.mobile-menu-item{margin-bottom:15px}.mobile-menu-item label{display:block;color:#ccc;font-size:12px;margin-bottom:5px}.mobile-menu-item select,.mobile-menu-item input[type=range]{width:100%;background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:8px;border-radius:4px;font-size:14px}.mobile-menu-buttons{display:flex;flex-direction:column;gap:10px}.mobile-menu-buttons button{background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:12px;border-radius:4px;cursor:pointer;font-family:IBM Plex Mono,monospace;font-size:14px;text-align:left;display:flex;align-items:center;gap:10px}.mobile-menu-buttons button:hover{background:rgba(255,255,255,.2)}#mobile-menu-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:149;pointer-events:none}#mobile-menu-overlay.open{display:block;pointer-events:auto}#topbar button{background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:6px 12px;border-radius:4px;cursor:pointer;font-family:IBM Plex Mono,monospace;font-size:12px}#topbar button:hover{background:rgba(255,255,255,.2)}.icon-button{width:36px;height:36px;padding:0;display:flex;align-items:center;justify-content:center}.icon-button svg{width:18px;height:18px}[data-lucide]{display:inline-block;vertical-align:middle}button svg{pointer-events:none}button *,button svg,button [data-lucide]{pointer-events:none!important}#editor-panel{position:fixed;bottom:0;left:0;right:0;height:140px;display:flex;align-items:stretch;gap:10px;padding:10px;z-index:100;transition:all .3s ease;pointer-events:auto;touch-action:manipulation}#editor-panel.minimal{height:50px;bottom:20px;left:20px;right:20px;padding:5px}#editor{flex:1;background:rgba(0,0,0,var(--ui-opacity));-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);border:1px solid rgba(255,255,255,.2);border-radius:4px;color:#fff;font-family:IBM Plex Mono,monospace;font-size:16px;padding:15px;resize:none;outline:none;transition:all .3s ease;touch-action:manipulation}#eval-btn{background:rgba(0,0,0,var(--ui-opacity));-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);border:1px solid rgba(255,255,255,.2);color:#fff;padding:20px 30px;font-family:IBM Plex Mono,monospace;font-size:16px;font-weight:700;cursor:pointer;border-radius:4px;transition:all .2s ease;align-self:stretch}#eval-btn:hover{background:rgba(255,255,255,.1);border-color:#fff6}#eval-btn:active{transform:scale(.95)}#editor.minimal{padding:12px 15px;font-size:14px}#eval-btn.minimal{padding:10px 20px;font-size:14px}#help-popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.95);border:1px solid #555;border-radius:8px;padding:30px;z-index:1000;max-width:90vw;width:800px;max-height:80vh;overflow-y:auto;display:none;pointer-events:auto;touch-action:manipulation}#help-popup h3{margin-bottom:20px;color:#fff;font-size:18px;text-align:center}.help-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;margin-top:20px}#help-popup .help-section{margin-bottom:0}#help-popup .help-section h4{color:#ccc;margin-bottom:10px;font-size:14px;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:5px}#help-popup .help-section p{color:#999;font-size:12px;line-height:1.5;margin-bottom:8px}#help-popup .close-btn{position:absolute;top:10px;right:15px;background:none;border:none;color:#999;font-size:20px;cursor:pointer}.hidden{display:none!important}.welcome-popup{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.9);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px}.welcome-popup-content{position:relative;background:rgba(20,20,20,.95);border:1px solid #555;border-radius:8px;padding:40px;max-width:600px;width:100%;max-height:80vh;overflow-y:auto}.welcome-title{margin-bottom:30px;color:#fff;font-size:24px;text-align:center}.welcome-content{color:#ccc}.welcome-content p{margin-bottom:20px;line-height:1.6}.welcome-content h3{color:#fff;margin-top:25px;margin-bottom:15px;font-size:16px}.welcome-content ul{list-style:none;padding-left:0}.welcome-content li{margin-bottom:10px;padding-left:20px;position:relative}.welcome-content li:before{content:"▸";position:absolute;left:0;color:#999}.welcome-content strong{color:#fff}.help-hint{margin-top:30px;padding:10px 15px;background:rgba(52,152,219,.2);border-radius:4px;border-left:3px solid #3498db}.help-hint kbd{background:rgba(255,255,255,.1);padding:2px 6px;border-radius:3px;font-family:IBM Plex Mono,monospace;font-size:.9em}.dismiss-hint{margin-top:20px;text-align:center;color:#999;font-size:.9em}#show-ui-btn{position:fixed;top:10px;right:10px;background:rgba(0,0,0,var(--ui-opacity));border:1px solid #555;color:#fff;padding:8px 12px;border-radius:4px;cursor:pointer;font-family:IBM Plex Mono,monospace;font-size:12px;z-index:1000;display:none}#show-ui-btn:hover{background:rgba(0,0,0,.9)}#shader-library{position:fixed;top:56px;left:-300px;width:300px;height:calc(100vh - 56px);background:rgba(0,0,0,calc(var(--ui-opacity) + .1));border-right:1px solid rgba(255,255,255,.1);z-index:90;transition:left .3s ease;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);overflow-y:auto;pointer-events:auto;touch-action:manipulation}#shader-library-trigger{position:fixed;top:56px;left:0;width:20px;height:calc(100vh - 56px);z-index:91;cursor:pointer}#shader-library-trigger:hover+#shader-library,#shader-library:hover{left:0}#shader-library.open{left:0}.library-header{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.library-header h3{margin:0 0 15px;color:#fff;font-size:16px}.save-shader{display:flex;gap:8px;margin-bottom:15px}.search-shader{margin-bottom:10px}.search-shader input{width:100%;background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:6px 8px;border-radius:4px;font-family:IBM Plex Mono,monospace;font-size:12px}.search-shader input::placeholder{color:#999}.save-shader input{flex:1;background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:6px 8px;border-radius:4px;font-family:IBM Plex Mono,monospace;font-size:12px}.save-shader button{background:rgba(255,255,255,.1);border:1px solid #555;color:#fff;padding:6px 12px;border-radius:4px;cursor:pointer;font-family:IBM Plex Mono,monospace;font-size:12px}.save-shader button:hover{background:rgba(255,255,255,.2)}.shader-list{padding:0 20px 20px}.shader-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:4px;margin-bottom:8px;overflow:hidden}.shader-item-header{padding:10px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}.shader-item-header:hover{background:rgba(255,255,255,.1)}.shader-name{color:#fff;font-size:12px;font-weight:700}.shader-actions{display:flex;gap:4px}.shader-action{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#ccc;cursor:pointer;font-size:10px;padding:4px 6px;border-radius:3px;transition:all .2s ease;font-family:IBM Plex Mono,monospace}.shader-action:hover{background:rgba(255,255,255,.2);color:#fff;transform:scale(1.05)}.shader-action.rename{background:rgba(52,152,219,.3);border-color:#3498db80}.shader-action.rename:hover{background:rgba(52,152,219,.5)}.shader-action.delete{background:rgba(231,76,60,.3);border-color:#e74c3c80}.shader-action.delete:hover{background:rgba(231,76,60,.5)}.shader-code{padding:8px 10px;background:rgba(0,0,0,var(--ui-opacity));color:#ccc;font-family:IBM Plex Mono,monospace;font-size:11px;border-top:1px solid rgba(255,255,255,.1);word-break:break-all}#performance-warning{position:fixed;top:50px;right:20px;background:rgba(255,0,0,.8);color:#fff;padding:10px 15px;border-radius:4px;font-size:12px;z-index:1001;display:none}@media (max-width: 768px){#topbar .controls{margin-left:auto}#topbar .controls-desktop{display:none}#topbar .controls-mobile,#hamburger-menu{display:flex}#topbar{height:56px;padding:0 10px}#topbar .title{margin-right:auto}#topbar .controls{flex-wrap:wrap;gap:5px;margin-left:0}#topbar button{padding:4px 8px;font-size:11px}#topbar label{font-size:11px!important;margin-right:5px!important}#topbar select{padding:2px!important;font-size:11px!important}#help-popup{width:95vw;max-width:95vw;max-height:90vh;padding:20px}.help-content{grid-template-columns:1fr;gap:20px}#editor-panel{height:120px}#editor{font-size:14px;padding:10px}#shader-library{width:100%;left:-100%;top:56px;height:calc(100vh - 56px)}#shader-library-trigger{display:none}}@media (max-width: 480px){#topbar{padding:5px}#topbar .title{font-size:12px}#topbar button{padding:3px 6px;font-size:10px}#topbar label,#topbar select{font-size:10px!important}#help-popup{padding:15px}#help-popup h3{font-size:16px}#help-popup .help-section h4{font-size:13px}#help-popup .help-section p{font-size:11px}.welcome-popup-content{padding:20px}.welcome-title{font-size:20px}.welcome-content h3{font-size:14px}#editor-panel{height:100px}#editor{font-size:12px;padding:8px}}@media (min-width: 1200px){.help-content{grid-template-columns:repeat(3,1fr)}}@keyframes fadeIn{0%{opacity:0;transform:translate(-50%) translateY(-10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}