:root{--bg: #05070c;--bg-panel: rgba(12, 17, 26, .82);--bg-panel-solid: #0c111a;--bg-raised: rgba(255, 255, 255, .045);--bg-raised-hover: rgba(255, 255, 255, .09);--border: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .2);--text: #e6eefb;--text-dim: #9aabc2;--text-faint: #64768d;--accent: #5fd4e8;--accent-bright: #b6f3ff;--accent-dim: rgba(95, 212, 232, .16);--warn: #f0b357;--danger: #f0757a;--ok: #77dd9b;--radius: 10px;--radius-sm: 6px;--shadow: 0 12px 40px rgba(0, 0, 0, .55);--font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;--panel-width: 306px;--topbar-height: 52px}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font);font-size:13px;-webkit-font-smoothing:antialiased;overscroll-behavior:none}#app{height:100%}button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.shell{position:relative;height:100%;display:grid;grid-template-rows:var(--topbar-height) minmax(0,1fr) auto;overflow:hidden}#viewport{position:absolute;inset:0;z-index:0}#viewport canvas{display:block;width:100%;height:100%;touch-action:none}.topbar{position:relative;grid-row:1;z-index:3;display:flex;align-items:center;gap:16px;padding:0 14px;background:linear-gradient(to bottom,rgba(5,7,12,.92),rgba(5,7,12,.5) 70%,transparent);pointer-events:none}.topbar>*{pointer-events:auto}.brand{display:flex;align-items:baseline;font-weight:600;letter-spacing:.16em;font-size:14px}.brand .brand-mark{color:var(--accent);align-self:flex-start;font-size:.72em;line-height:1;margin-left:-.1em;margin-top:.05em;letter-spacing:0}.readouts{display:flex;gap:18px;margin-left:auto;align-items:center}.readout{display:flex;flex-direction:column;line-height:1.15}.readout dt{font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint)}.readout dd{margin:0;font-family:var(--mono);font-size:15px;font-variant-numeric:tabular-nums}.readout dd.accent{color:var(--accent-bright)}.readout.rule-readout dd{font-size:12px;color:var(--text-dim)}.panels{position:relative;grid-row:2;z-index:2;width:var(--panel-width);height:100%;min-height:0;padding:0 12px 12px;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.18) transparent;display:flex;flex-direction:column;gap:8px}.panels::-webkit-scrollbar{width:8px}.panels::-webkit-scrollbar-thumb{background:#ffffff29;border-radius:8px}.panel{background:var(--bg-panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;flex:none}.panel>summary{list-style:none;cursor:pointer;padding:9px 12px;display:flex;align-items:center;gap:8px;font-size:10.5px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--text-dim);user-select:none}.panel>summary::-webkit-details-marker{display:none}.panel>summary:after{content:"";margin-left:auto;width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(-45deg);transition:transform .18s ease;opacity:.7}.panel[open]>summary:after{transform:rotate(45deg)}.panel>summary:hover{color:var(--text);background:var(--bg-raised)}.panel-body{padding:4px 12px 13px;display:flex;flex-direction:column;gap:11px}.field{display:flex;flex-direction:column;gap:5px}.field>label:not(.check),.field-label{font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-faint);display:flex;justify-content:space-between;align-items:baseline;gap:8px}.field-value{font-family:var(--mono);color:var(--accent);text-transform:none;letter-spacing:0;font-size:11px}.row{display:flex;gap:6px;align-items:center}.row.wrap{flex-wrap:wrap}.row.spread{justify-content:space-between}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:6px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.hint{font-size:11px;line-height:1.5;color:var(--text-faint);margin:0}.hint code{font-family:var(--mono);color:var(--text-dim);background:var(--bg-raised);padding:1px 4px;border-radius:3px}.btn{appearance:none;border:1px solid var(--border);background:var(--bg-raised);color:var(--text);border-radius:var(--radius-sm);padding:6px 10px;cursor:pointer;font-size:12px;line-height:1.3;transition:background .14s ease,border-color .14s ease,color .14s ease;white-space:nowrap}.btn:hover:not(:disabled){background:var(--bg-raised-hover);border-color:var(--border-strong)}.btn:active:not(:disabled){transform:translateY(.5px)}.btn:disabled{opacity:.38;cursor:not-allowed}.btn.grow{flex:1}.btn.small{padding:4px 8px;font-size:11px}.btn.primary{background:var(--accent-dim);border-color:#5fd4e86b;color:var(--accent-bright)}.btn.primary:hover:not(:disabled){background:#5fd4e842}.btn[aria-pressed=true]{background:var(--accent-dim);border-color:#5fd4e873;color:var(--accent-bright)}.btn.danger:hover:not(:disabled){border-color:#f0757a80;color:var(--danger)}select,input[type=text],input[type=number]{appearance:none;width:100%;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 8px;transition:border-color .14s ease}select{background-image:linear-gradient(45deg,transparent 50%,var(--text-faint) 50%),linear-gradient(135deg,var(--text-faint) 50%,transparent 50%);background-position:right 12px center,right 7px center;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:24px;cursor:pointer}select option{background:var(--bg-panel-solid);color:var(--text)}input[type=text],input[type=number]{font-family:var(--mono)}input:hover,select:hover{border-color:var(--border-strong)}input.invalid{border-color:var(--danger)}input[type=range]{appearance:none;width:100%;height:18px;background:transparent;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;background:#ffffff24}input[type=range]::-moz-range-track{height:3px;border-radius:3px;background:#ffffff24}input[type=range]::-webkit-slider-thumb{appearance:none;width:13px;height:13px;margin-top:-5px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);transition:transform .12s ease}input[type=range]::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:var(--accent);border:2px solid var(--bg)}input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.15)}.check{display:flex;align-items:center;gap:8px;cursor:pointer;padding:2px 0;font-size:12px;color:var(--text-dim)}.check:hover{color:var(--text)}.check input{appearance:none;width:15px;height:15px;flex:none;border:1px solid var(--border-strong);border-radius:4px;background:var(--bg-raised);cursor:pointer;position:relative;transition:background .14s ease,border-color .14s ease}.check input:checked{background:var(--accent);border-color:var(--accent)}.check input:checked:after{content:"";position:absolute;left:4.5px;top:1.5px;width:4px;height:8px;border:solid var(--bg);border-width:0 2px 2px 0;transform:rotate(43deg)}.count-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:3px}.count-toggle{appearance:none;border:1px solid var(--border);background:var(--bg-raised);color:var(--text-faint);border-radius:4px;padding:4px 0;font-family:var(--mono);font-size:10px;cursor:pointer;transition:background .12s ease,color .12s ease,border-color .12s ease}.count-toggle:hover:not(:disabled){border-color:var(--border-strong);color:var(--text)}.count-toggle[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#05121a;font-weight:500}.count-toggle:disabled{opacity:.3;cursor:not-allowed}.stat-list{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:0;font-size:12px}.stat-list dt{color:var(--text-faint)}.stat-list dd{margin:0;font-family:var(--mono);text-align:right;font-variant-numeric:tabular-nums;color:var(--text-dim)}.stat-list dd.up{color:var(--ok)}.stat-list dd.down{color:var(--danger)}#population-graph{width:100%;height:74px;display:block;border-radius:var(--radius-sm);background:#ffffff08;border:1px solid var(--border)}.pattern-group{display:flex;flex-direction:column;gap:4px}.pattern-group h4{margin:6px 0 1px;font-size:9.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--text-faint);font-weight:600}.pattern-btn{text-align:left;width:100%;padding:6px 9px;border-radius:var(--radius-sm);border:1px solid transparent;background:var(--bg-raised);cursor:pointer;transition:background .13s ease,border-color .13s ease}.pattern-btn:hover{background:var(--bg-raised-hover);border-color:var(--border)}.pattern-btn[aria-pressed=true]{border-color:#5fd4e873;background:var(--accent-dim)}.pattern-btn strong{display:block;font-weight:500;font-size:12px}.pattern-btn span{display:block;font-size:10.5px;line-height:1.45;color:var(--text-faint);margin-top:2px}.transport{position:relative;grid-row:3;z-index:3;display:flex;align-items:center;gap:12px;padding:9px 14px;background:linear-gradient(to top,rgba(5,7,12,.94),rgba(5,7,12,.6) 65%,transparent);flex-wrap:wrap}.transport-group{display:flex;align-items:center;gap:5px}.icon-btn{appearance:none;width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--border);background:var(--bg-panel);backdrop-filter:blur(10px);color:var(--text);border-radius:var(--radius-sm);cursor:pointer;transition:background .14s ease,border-color .14s ease,color .14s ease}.icon-btn:hover:not(:disabled){background:var(--bg-raised-hover);border-color:var(--border-strong)}.icon-btn:disabled{opacity:.35;cursor:not-allowed}.icon-btn svg{width:15px;height:15px;fill:currentColor}.icon-btn.play{width:40px;height:40px;background:var(--accent-dim);border-color:#5fd4e86b;color:var(--accent-bright)}.icon-btn.play:hover{background:#5fd4e847}.speed-control{display:flex;align-items:center;gap:8px;min-width:190px;flex:1;max-width:280px}.speed-control 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ease;max-width:100%}.toast.error{border-color:#f0757a8c;color:#ffd8da}.toast.warn{border-color:#f0b35780;color:#ffe6bd}.toast.info{color:var(--text)}.toast .toast-close{margin-left:auto;background:none;border:none;color:inherit;opacity:.55;cursor:pointer;padding:0 2px;font-size:14px;line-height:1}.toast .toast-close:hover{opacity:1}@keyframes toast-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}.fatal{position:fixed;inset:0;display:grid;place-content:center;gap:10px;padding:32px;text-align:center;background:var(--bg);color:var(--text);font-family:var(--font)}.fatal h1{font-size:20px;font-weight:600;margin:0}.fatal p{margin:0;color:var(--text-dim);max-width:46ch;line-height:1.6}.fatal code{font-family:var(--mono);font-size:12px;color:var(--warn)}.help h3{margin:4px 0 0;font-size:11.5px;letter-spacing:.04em;color:var(--text);font-weight:600}.help p{margin:0;font-size:11.5px;line-height:1.6;color:var(--text-dim)}.help code{font-family:var(--mono);background:var(--bg-raised);padding:1px 4px;border-radius:3px;color:var(--accent)}.keys{display:grid;grid-template-columns:auto 1fr;gap:3px 10px;font-size:11.5px;align-items:baseline}.keys dt{font-family:var(--mono);font-size:10px;color:var(--text);background:var(--bg-raised);border:1px solid var(--border);border-bottom-width:2px;border-radius:4px;padding:1px 5px;justify-self:start}.keys dd{margin:0;color:var(--text-faint)}.panel-toggle{display:none}@media(max-width:900px){:root{--panel-width: min(320px, 88vw)}.panel-toggle{display:grid;place-items:center;width:34px;height:34px}.panels{position:absolute;top:var(--topbar-height);left:0;bottom:0;height:auto;padding-top:8px;padding-bottom:110px;background:#05070cb8;backdrop-filter:blur(3px);transform:translate(-102%);transition:transform .24s ease}.panels.open{transform:none}.readouts{gap:12px}.readout.rule-readout,.hint-bar{display:none}.transport{gap:8px;padding:8px 10px 10px}.scrubber,.speed-control{flex-basis:100%;max-width:none}}@media(max-width:560px){.readout dd{font-size:13px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}