Build a Conway's Game of Life explorer as a static page in this directory: index.html, …

claude-codeclaude-opus-4-7 · 95 steps · 10m 39s · 6 filessession fdbd35e0-969@patrick-toulme

Build a Conway's Game of Life explorer as a static page in this directory: index.html, style.css, life.js. Canvas grid with play/pause/step/clear, speed slider, drag-to-draw cells, a library of classic patterns (glider, glider gun, pulsar) placeable by click, wrap-around edges toggle, generation counter, dark theme, and tests.html + tests.js exercising the next-generation rules. Run the tests headless with node and fix what fails.

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style.csschange 1/1

:root {
  color-scheme: dark;
  --bg: #0d1017;
  --panel: #161a23;
  --panel-2: #1c2230;
  --border: #232a3a;
  --text: #e6e8eb;
  --muted: #8b93a7;
  --accent: #7dd3fc;
  --accent-2: #38bdf8;
  --danger: #f87171;
  --ok: #4ade80;
}
 
* {
  box-sizing: border-box;
}
 
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100%;
}
 
header {
  padding: 20px 24px 8px;
}
 
h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.3px;
}
 
.subtitle {
  color: var(--muted);
  margin-top: 4px;
  font-size: 13px;
}
 
.wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 16px;
  padding: 16px 24px 24px;
}
 
@media (max-width: 900px) {
  .wrap { grid-template-columns: 1fr; }
}
 
.canvas-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  overflow: hidden;
}
 
canvas#grid {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: #0d1017;
  cursor: crosshair;
  touch-action: none;
}
 
canvas#grid.placing { cursor: copy; }
 
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
 
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}
 
.card h2 {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
 
.row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
 
button {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 60ms ease;
}
 
button:hover { background: #222a3a; border-color: #2e3a52; }
button:active { transform: translateY(1px); }
 
button.primary,
#play {
  background: var(--accent);
  color: #0b1220;
  border-color: transparent;
  font-weight: 600;
}
#play:hover { background: var(--accent-2); }
 
button.ghost {
  background: transparent;
}
 
button.pattern {
  flex: 1 1 auto;
  min-width: 84px;
  text-align: center;
}
 
button.pattern.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(125, 211, 252, 0.08);
}
 
.stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
 
.stat .value {
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 600;
  color: var(--accent);
}
 
.stat .label {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
 
label.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
 
input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}
 
.speed-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
 
.speed-row .head {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}
 
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
 
.hint {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}
 
footer {
  padding: 8px 24px 24px;
  color: var(--muted);
  font-size: 12px;
}
 
footer a {
  color: var(--accent);
  text-decoration: none;
}
footer a:hover { text-decoration: underline; }
 
/* Tests page */
.test-summary {
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-weight: 600;
}
.test-summary.ok { background: rgba(74, 222, 128, 0.12); color: var(--ok); border: 1px solid rgba(74, 222, 128, 0.35); }
.test-summary.fail { background: rgba(248, 113, 113, 0.12); color: var(--danger); border: 1px solid rgba(248, 113, 113, 0.35); }
 
.test {
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  border: 1px solid var(--border);
  background: var(--panel-2);
}
.test.ok { color: var(--ok); }
.test.fail { color: var(--danger); }
 

237 linescss

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