/* Plain test-harness styling only. The real visual design comes later. */
body { font: 16px/1.4 system-ui, -apple-system, sans-serif; margin: 0; background: #fafafa; color: #111; }
main { max-width: 960px; margin: 0 auto; padding: 12px; }
button { font: inherit; min-height: 44px; min-width: 44px; padding: 6px 12px; margin: 2px; cursor: pointer; touch-action: manipulation; }
button[disabled] { opacity: .45; cursor: default; }
button.sel { outline: 3px solid #06c; background: #def; }
button.card { min-width: 56px; font-size: 20px; }
.red { color: #b00; }
.muted { color: #666; }
.err { color: #b00; min-height: 1.4em; }
.pill { font-size: 12px; padding: 2px 8px; border-radius: 10px; background: #ddd; }
.pill.ok { background: #cfc; }
.turn { background: #ffd; border: 2px solid #c90; padding: 6px; }
.box { border: 1px solid #ccc; background: #fff; padding: 8px; margin: 8px 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
table { border-collapse: collapse; } td, th { border: 1px solid #ccc; padding: 2px 6px; text-align: left; }
ol.log { max-height: 180px; overflow: auto; font-size: 14px; }