:root{color-scheme:dark;--bg:var(--theme-bg);--panel:var(--theme-panel);--line:var(--theme-line);--text:var(--theme-text);--muted:var(--theme-muted);--accent:var(--theme-accent);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;color:var(--text);background:radial-gradient(ellipse at 85% 0%,color-mix(in srgb,var(--theme-active) 19%,transparent),transparent 50%),var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,select,input{font:inherit}button,select{background:var(--theme-control);border:1px solid var(--theme-border);color:#d8e7fc;border-radius:8px;min-height:44px;padding:10px 14px}button{cursor:pointer;transition:background .15s,border-color .15s}button:hover{background:var(--theme-line);border-color:#678bbd}button:disabled{opacity:.4;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid var(--theme-strong);outline-offset:5px}header{height:84px;max-width:1520px;margin:auto;padding:0 54px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid color-mix(in srgb,var(--theme-line) 44%,transparent);font-size:12px;color:#a5bbdb}.brand{display:flex;align-items:center;gap:14px;color:#94beff;font-size:25px}.brand span{font-size:11px;font-weight:650;letter-spacing:1.5px;color:#e5efff}main{max-width:1520px;margin:auto;padding:0 54px}.intro{display:flex;align-items:center;justify-content:space-between;margin:40px 0 30px;gap:25px}.eyebrow,.intro-tag,.section-label,.status,.stats>div>span,.rules-title{font-family:ui-monospace,monospace}.eyebrow{font-size:10px;letter-spacing:2px;color:#89acdf;margin:0 0 15px}h1{font-size:clamp(28px,3.2vw,43px);font-weight:550;letter-spacing:-1.4px;margin:0;line-height:1.25}h1>span{color:var(--accent)}.intro p:last-child{font-size:13px;color:var(--muted);margin:13px 0 0}.intro-tag{font-size:10px;letter-spacing:1px;color:#89a4c8;padding:12px 15px;border:1px solid var(--theme-active);border-radius:6px;white-space:nowrap}.toolbar{display:flex;align-items:flex-end;flex-wrap:wrap;gap:23px;padding:23px 26px;background:var(--theme-panel);border:1px solid var(--line);border-radius:14px;margin-bottom:24px}.toolbar label{display:flex;flex-direction:column;gap:12px;font-size:10px;color:#a0b7d6}.preset-label{flex:1;min-width:180px}.toolbar select{font-size:12px;width:100%}.slider-label{position:relative;width:135px}.slider-label output{position:absolute;top:0;right:0;color:#d0e3ff;font:10px ui-monospace,monospace}.toolbar input{accent-color:var(--theme-strong);width:100%;height:44px;margin:0;cursor:pointer}.play-controls{display:flex;gap:8px;margin-left:auto}.play-controls button{min-width:44px;font-size:18px}.play-controls .primary{display:flex;align-items:center;justify-content:center;gap:9px;min-width:104px;background:var(--theme-accent);color:var(--theme-control);border-color:#bcd9ff;font-size:12px;font-weight:650}.play-controls .primary:hover{background:#c4dfff}.world{background:linear-gradient(140deg,color-mix(in srgb,var(--theme-line) 17%,transparent),transparent 60%),var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 12px 40px color-mix(in srgb,var(--theme-bg) 15%,transparent)}.world-heading{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:24px 27px}.section-label{font-size:10px;color:#9eb8df;letter-spacing:1px}.status{font-size:9px;letter-spacing:1px;color:#a7ccff;background:color-mix(in srgb,var(--theme-line) 31%,transparent);border:1px solid var(--theme-border);border-radius:5px;padding:7px 9px;white-space:nowrap}.legend{display:flex;flex-wrap:wrap;gap:19px;font:9px ui-monospace,monospace;color:#8fa9cd;margin-left:auto}.legend>span{display:flex;align-items:center;gap:7px}.legend i{width:7px;height:7px;border-radius:2px}.alive{background:var(--theme-accent)}.empty{background:var(--theme-line);border:1px solid var(--theme-border)}.tree{background:#508766}.growth{background:#a4e588}.flame{background:#ff9a4d}.canvas-wrap{position:relative;margin:0 27px;background:var(--theme-deep);border:1px solid var(--theme-active);border-radius:9px;overflow:hidden;height:clamp(280px,calc(100svh - 405px),590px)}#grid{display:block;width:100%;height:100%;image-rendering:pixelated;touch-action:none;cursor:crosshair}#canvas-hint{position:absolute;bottom:13px;right:16px;pointer-events:none;font:9px ui-monospace,monospace;color:#acc8ed;background:color-mix(in srgb,var(--theme-deep) 79%,transparent);border:1px solid color-mix(in srgb,var(--theme-border) 38%,transparent);border-radius:5px;padding:9px 11px}.world-tools{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:20px 27px 24px}.brushes{display:flex;gap:7px}.brushes button{font-size:10px;min-height:38px;padding:9px 15px;background:var(--theme-control)}.brushes button.selected{color:#cbe3ff;background:var(--theme-active);border-color:#6492c5}.view-options{display:flex;align-items:center;gap:24px;font-size:10px;color:#9bb3d5}.view-options label{display:flex;align-items:center;gap:8px;cursor:pointer}.view-options input{accent-color:var(--theme-strong);width:14px;height:14px;margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);padding:25px 27px 28px;gap:20px;background:var(--theme-deep);border-top:1px solid var(--line)}.stats>div>span{font-size:9px;letter-spacing:.8px;color:#87a1c7}.stats strong{display:block;font:24px ui-monospace,monospace;font-weight:400;margin-top:13px;color:#d1e5ff}.stats strong span{font-size:12px;color:#7798c2;margin-left:5px}.explanation{display:flex;align-items:center;gap:29px;padding:29px 3px 28px;border-bottom:1px solid color-mix(in srgb,var(--theme-line) 50%,transparent)}.rules-title{font-size:10px;letter-spacing:.7px;color:#9dbce8;white-space:nowrap}.explanation p{font-size:12px;color:#97afd1;line-height:1.85;margin:0;max-width:800px}.explanation a{font-size:10px;color:#8aaad6;white-space:nowrap;margin-left:auto}footer{display:flex;justify-content:space-between;gap:20px;padding:28px 0 34px;font-size:10px;color:#819abb;line-height:1.8}kbd{font:9px ui-monospace,monospace;border:1px solid var(--theme-border);padding:4px 6px;border-radius:4px;background:var(--theme-control);color:#a3bbdd}.separator{margin:0 10px}body[data-mode=fire] .slider-label{width:112px}body[data-mode=fire] .preset-label{min-width:160px}body[data-mode=fire] #secondary{color:#ffb877}body[data-mode=fire] #population{color:#9ecea4}
@media(max-width:1200px){header,main{padding-left:32px;padding-right:32px}.toolbar{gap:20px}.slider-label{width:125px}body[data-mode=fire] .play-controls{flex-basis:100%;justify-content:flex-end}.explanation{gap:22px}}
@media(max-width:800px){.toolbar .preset-label{flex-basis:45%}.slider-label{flex:1;min-width:110px}.play-controls{margin-left:auto}.world-heading{gap:15px}.legend{font-size:8px;gap:13px}.canvas-wrap{height:clamp(300px,calc(100svh - 390px),510px)}.explanation{flex-wrap:wrap;gap:17px}.explanation p{flex:1;min-width:250px}.explanation a{margin-left:0}}
@media(max-width:600px){header{height:70px;padding:0 21px}.brand{font-size:23px;gap:10px}.brand span{font-size:9px;letter-spacing:1px}header>a:last-child{font-size:11px}main{padding:0 18px}.intro{margin:32px 0 25px;flex-wrap:wrap;gap:20px}h1{font-size:31px;letter-spacing:-.8px}.intro p:last-child{font-size:12px}.intro-tag{font-size:9px;padding:10px 12px}.toolbar{padding:22px 20px;gap:20px 16px;border-radius:12px}.toolbar .preset-label{flex-basis:100%}.toolbar select{font-size:12px}.slider-label,body[data-mode=fire] .slider-label{flex:0 1 calc(50% - 8px);width:calc(50% - 8px);min-width:0}.play-controls,body[data-mode=fire] .play-controls{margin-left:0;width:100%;gap:10px;flex-basis:100%}.play-controls button{flex:1}.play-controls .primary{flex:2}.world-heading{padding:23px 21px;flex-wrap:wrap;gap:17px}.section-label{font-size:9px}.legend{margin-left:0;order:3;width:100%;gap:17px;font-size:8px}.world-heading .status{margin-left:auto}.canvas-wrap{margin:0 20px;height:clamp(330px,calc(100svh - 400px),500px)}#canvas-hint{bottom:10px;right:10px;font-size:8px;padding:8px}.world-tools{padding:20px;gap:20px;flex-wrap:wrap}.brushes{width:100%}.brushes button{flex:1;min-height:42px;font-size:10px}.view-options{gap:25px;font-size:10px}.stats{padding:25px 21px;gap:15px}.stats>div>span{font-size:7px;letter-spacing:.4px}.stats strong{font-size:18px;margin-top:12px}.stats strong span{font-size:9px;margin-left:3px}.explanation{padding:26px 4px;gap:17px;align-items:flex-start}.rules-title{font-size:9px}.explanation p{min-width:100%;font-size:11px;line-height:1.95}.explanation a{font-size:9px}footer{flex-direction:column;gap:17px;padding:27px 3px;font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}