:root{--background: #0f0f10;--surface: #131315;--elevated: #18181a;--foreground: #f6f6f7;--muted: #a9a9ad;--border: #2a2a2e;--hover: #202023;--cell-size: 18px;color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";line-height:1.5;font-weight:500;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html,body,#root{height:100%}body{margin:0;background:var(--background);color:var(--foreground)}button{cursor:pointer}.gol-root{display:flex;flex-direction:column;height:100vh;padding:24px;padding-bottom:calc(24px + env(safe-area-inset-bottom));gap:16px;box-sizing:border-box}.mobile-overlay{display:none}@media (max-width: 820px){.mobile-overlay{position:fixed;inset:0;display:grid;place-items:center;place-content:center;background:#000000bf;z-index:1000;padding:24px;text-align:center}.gol-root>*:not(.mobile-overlay){display:none!important}.mobile-title{color:var(--background);background:var(--foreground);padding:10px 14px;border-radius:12px;margin:0 0 12px;font-size:18px}.mobile-text{color:#f2f2f2;max-width:26ch;margin:0;line-height:1.4}}.top-tools{position:fixed;top:16px;left:16px;display:flex;gap:8px;z-index:40}.gol-header{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:200}.header-center{position:absolute;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px}.header-actions{display:flex;gap:8px}.gol-title{margin:0;font-size:20px;letter-spacing:.2px}.gol-stats{display:flex;gap:12px;color:var(--muted);font-size:13px}.gol-stage{flex:1;display:grid;place-items:center;overflow:hidden;background-image:radial-gradient(var(--border) 1px,transparent 1px);background-size:24px 24px;background-position:center;position:relative}.grid-viewport{touch-action:none;-webkit-user-select:none;user-select:none}.grid-cell{background:var(--surface);transition:background-color .12s ease}.grid-cell.alive{background:var(--foreground)}.grid-viewport.dragging .grid-cell{transition:none}.stage-actions{position:absolute;right:16px;bottom:16px;display:flex;gap:8px}.controls{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:16px;border-radius:12px;background:var(--surface);box-shadow:0 0 0 1px var(--border) inset;margin-bottom:env(safe-area-inset-bottom)}.control-group{display:flex;gap:12px}.control-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;border:1px solid var(--border);background:var(--elevated);color:var(--foreground)}.control-btn.primary{background:var(--foreground);color:var(--background)}.control-btn:disabled{opacity:.6;cursor:not-allowed}.icon{display:inline-flex}.control-btn.danger{background:#2a0e11;color:#ffb3b8;border-color:#552028}.control-btn.danger:hover{border-color:#ff7a85}.speed{margin-left:auto;display:inline-flex;align-items:center;gap:10px}.speed-label{color:var(--muted);font-size:12px}.speed input[type=range]{appearance:none;height:6px;width:180px;background:var(--elevated);border-radius:999px;outline:none;box-shadow:0 0 0 1px var(--border) inset}.speed input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--foreground);border:2px solid var(--background);box-shadow:0 0 0 1px var(--border)}.speed-value{width:64px;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.tools{display:inline-flex;gap:8px;align-items:center}.tools select,.preset-select{background:var(--elevated);color:var(--foreground);border:1px solid var(--border);border-radius:10px;padding:8px 10px}.preset-trigger{display:inline-flex;align-items:center;gap:8px}.preset-trigger .label{color:var(--muted);font-size:12px}.preset-trigger .value{font-weight:600}.preset-trigger .caret{opacity:.7}.preset-menu{position:absolute;top:44px;left:50%;transform:translate(-50%);display:grid;grid-template-columns:repeat(4,1fr);gap:10px;background:var(--surface);padding:12px;border-radius:12px;box-shadow:0 10px 30px #00000080,0 0 0 1px var(--border) inset;z-index:300}.preset-menu-title{grid-column:1 / -1;color:var(--muted);font-size:12px;margin-bottom:4px}.preset-item{display:flex;flex-direction:column;gap:6px;align-items:center;background:var(--elevated);border:1px solid var(--border);border-radius:10px;padding:8px;color:var(--foreground)}.preset-item.active{box-shadow:0 0 0 2px var(--foreground) inset}.preset-item .label{font-size:12px;color:var(--muted)}.modal-overlay{position:fixed;inset:0;background:#00000080;display:grid;place-items:center;z-index:50}.modal{width:min(520px,90vw);background:var(--surface);color:var(--foreground);border-radius:14px;box-shadow:0 10px 30px #00000080,0 0 0 1px var(--border) inset;padding:20px}.modal-title{margin:0 0 10px;font-size:18px}.modal-label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.modal-row{display:flex;align-items:center;gap:8px}.text-input{flex:1;background:var(--elevated);color:var(--foreground);border:1px solid var(--border);border-radius:10px;padding:10px 12px}.ext{color:var(--muted)}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}.gen{display:inline-flex;align-items:baseline;gap:8px;padding:6px 10px;border-radius:10px;background:var(--elevated);box-shadow:0 0 0 1px var(--border) inset}.gen-label{color:var(--muted);font-size:12px}.gen-value{font-size:18px;letter-spacing:.3px}.toast{position:fixed;left:50%;bottom:64px;transform:translate(-50%) translateY(10px);background:var(--surface);color:var(--foreground);border:1px solid var(--border);border-radius:999px;padding:10px 14px;z-index:1000;box-shadow:0 10px 30px #00000059,0 0 0 1px var(--border) inset;opacity:0;transition:opacity .16s ease,transform .2s ease}.toast.visible{opacity:1;transform:translate(-50%) translateY(0)}