:root{--bg:#000;--panel-bg:#08120eeb;--panel-border:#00ffd12e;--panel-border-bright:#00ffd180;--cyan:#00ffd1;--cyan-dim:#00ffd166;--cyan-faint:#00ffd114;--yellow:#fe0;--danger:#ff3b3b;--text-primary:#c8ffe8;--text-dim:#b4e6d280;--text-mono:#7fffda;--panel-w:240px;--font-display:"Space Grotesk", sans-serif;--font-mono:"JetBrains Mono", monospace;--radius:3px;--transition:.12s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);width:100%;height:100%;font-family:var(--font-display);color:var(--text-primary);overflow:hidden}#canvas{cursor:crosshair;width:100%;height:100%;image-rendering:pixelated;image-rendering:crisp-edges;display:block;position:fixed;top:0;left:0}#hud{z-index:100;background:var(--panel-bg);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(12px);min-width:180px;font-family:var(--font-mono);pointer-events:none;padding:14px 18px;position:fixed;top:20px;right:20px;box-shadow:0 0 30px #00ffd10a,0 2px 20px #000c}#hud:before{content:"";background:linear-gradient(90deg, transparent, var(--cyan), transparent);opacity:.6;height:1px;position:absolute;top:0;left:0;right:0}.hud-label{font-family:var(--font-display);letter-spacing:.2em;color:var(--cyan);opacity:.7;margin-bottom:10px;font-size:9px;font-weight:600}.hud-row{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:5px;display:flex}.hud-key{letter-spacing:.15em;color:var(--text-dim);font-size:9px;font-weight:500}.hud-val{color:var(--cyan);text-align:right;font-size:14px;font-weight:400}.hud-rule-val{color:var(--yellow);font-size:11px}#panel{width:var(--panel-w);z-index:100;background:var(--panel-bg);border-right:1px solid var(--panel-border);-webkit-backdrop-filter:blur(16px);scrollbar-width:thin;scrollbar-color:var(--panel-border) transparent;height:100vh;box-shadow:4px 0 40px #000000b3, inset -1px 0 0 var(--panel-border);position:fixed;top:0;left:0;overflow:hidden auto}#panel:before{content:"";background:linear-gradient(180deg, var(--cyan) 0%, transparent 30%, transparent 70%, var(--cyan) 100%);opacity:.2;pointer-events:none;width:1px;height:100%;position:absolute;top:0;right:0}.panel-header{border-bottom:1px solid var(--panel-border);padding:20px 16px 16px;position:relative}.panel-title{letter-spacing:.3em;color:var(--cyan);text-shadow:0 0 20px #00ffd180;font-size:22px;font-weight:700;display:block}.panel-subtitle{letter-spacing:.2em;color:var(--text-dim);font-size:8px;font-family:var(--font-mono);margin-top:2px;display:block}.panel-section{border-bottom:1px solid var(--panel-border);padding:12px 14px}.section-label{letter-spacing:.2em;color:var(--cyan-dim);font-size:8px;font-weight:600;font-family:var(--font-mono);margin-bottom:8px}.btn{border:1px solid var(--panel-border-bright);color:var(--text-primary);font-family:var(--font-mono);letter-spacing:.08em;cursor:pointer;border-radius:var(--radius);transition:background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);white-space:nowrap;background:0 0;padding:6px 10px;font-size:11px;font-weight:500}.btn:hover{background:var(--cyan-faint);border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 10px #00ffd11a}.btn:active{background:#00ffd11f;transform:scale(.97)}.btn.active,.btn.btn-primary.active{border-color:var(--cyan);color:var(--cyan);background:#00ffd126;box-shadow:0 0 16px #00ffd133,inset 0 0 8px #00ffd10d}.btn.btn-primary{border-color:var(--cyan);color:var(--cyan);font-size:14px}.btn.btn-danger{color:#ff7878cc;border-color:#ff3b3b66}.btn.btn-danger:hover{border-color:var(--danger);color:var(--danger);background:#ff3b3b1a;box-shadow:0 0 10px #ff3b3b26}.btn.btn-sm{padding:4px 8px;font-size:10px}.btn.btn-full{text-align:center;width:100%;margin-top:6px}.ctrl-row{gap:6px;margin-bottom:6px;display:flex}.ctrl-row .btn{text-align:center;flex:1}.slider-row{align-items:center;gap:8px;margin-top:8px;display:flex}.slider-label{font-family:var(--font-mono);letter-spacing:.15em;color:var(--text-dim);min-width:42px;font-size:8px}input[type=range]{appearance:none;background:var(--panel-border);cursor:pointer;border-radius:1px;outline:none;flex:1;height:2px}input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--cyan);cursor:pointer;width:10px;height:10px;transition:box-shadow var(--transition);border-radius:50%;box-shadow:0 0 6px #00ffd180}input[type=range]::-webkit-slider-thumb:hover{box-shadow:0 0 12px #00ffd1cc}input[type=range]::-moz-range-thumb{background:var(--cyan);cursor:pointer;border:none;border-radius:50%;width:10px;height:10px;box-shadow:0 0 6px #00ffd180}.slider-val{font-family:var(--font-mono);color:var(--text-mono);text-align:right;min-width:50px;font-size:9px}.select-input{border:1px solid var(--panel-border);width:100%;color:var(--text-primary);font-family:var(--font-mono);border-radius:var(--radius);cursor:pointer;transition:border-color var(--transition);background:#00140fcc;outline:none;margin-bottom:8px;padding:5px 8px;font-size:10px}.select-input:hover,.select-input:focus{border-color:var(--cyan-dim)}.select-input option{color:var(--text-primary);background:#081410}.rule-display{text-align:center;padding:6px 0 10px}.rule-string{font-family:var(--font-mono);color:var(--yellow);letter-spacing:.05em;text-shadow:0 0 12px #ffee004d;font-size:16px;font-weight:500}.rule-group{margin-bottom:10px}.rule-group-label{letter-spacing:.15em;color:var(--text-dim);font-size:8px;font-family:var(--font-mono);margin-bottom:5px}.rule-toggles{gap:3px;display:flex}.rtog{border:1px solid var(--panel-border);color:var(--text-dim);font-family:var(--font-mono);cursor:pointer;border-radius:var(--radius);text-align:center;transition:all var(--transition);background:0 0;flex:1;padding:5px 2px;font-size:10px;font-weight:500;line-height:1}.rtog:hover{border-color:var(--cyan-dim);color:var(--cyan);background:var(--cyan-faint)}.rtog.active{border-color:var(--cyan);color:var(--cyan);background:#00ffd12e;box-shadow:0 0 6px #00ffd133}.pattern-controls{gap:6px;margin-bottom:8px;display:flex}.pattern-controls .btn{flex:1}#pattern-preview{border:1px solid var(--panel-border);border-radius:var(--radius);width:100%;height:auto;image-rendering:pixelated;background:#000;display:block}.rle-textarea{border:1px solid var(--panel-border);width:100%;color:var(--text-mono);font-family:var(--font-mono);border-radius:var(--radius);resize:vertical;min-height:60px;transition:border-color var(--transition);background:#000a08e6;outline:none;padding:6px 8px;font-size:9px;line-height:1.5}.rle-textarea:focus{border-color:var(--cyan-dim)}.rle-textarea::placeholder{color:#00ffd133}.shortcuts .shortcut-row{justify-content:space-between;align-items:center;margin-bottom:5px;font-size:10px;display:flex}.shortcuts .shortcut-row span{color:var(--text-dim);font-size:9px}kbd{border:1px solid var(--panel-border);color:var(--cyan-dim);font-family:var(--font-mono);background:#00ffd114;border-radius:2px;padding:2px 5px;font-size:9px}body:after{content:"";pointer-events:none;z-index:50;background:repeating-linear-gradient(0deg,#0000,#0000 2px,#00000008 2px 4px);position:fixed;inset:0}#panel::-webkit-scrollbar{width:3px}#panel::-webkit-scrollbar-track{background:0 0}#panel::-webkit-scrollbar-thumb{background:var(--panel-border);border-radius:2px}@keyframes glow-pulse{0%,to{text-shadow:0 0 8px #00ffd14d}50%{text-shadow:0 0 16px #00ffd199}}.hud-val{animation:3s ease-in-out infinite glow-pulse}#hud:after{content:"";border-bottom:1px solid var(--cyan);border-right:1px solid var(--cyan);opacity:.4;width:12px;height:12px;position:absolute;bottom:0;right:0}