:root {
  --bg: #f6f1e7;
  --ink: #222;
  --muted: #6b6457;
  --board: #e2c48f;
  --line: #9a7c4b;
  --zone: #a9c7ef;
  --accent: #c0392b;
  --win: #e67e22;
  --good: #2f7d4f;  /* hint ring colours, from ninepaths */
  --hot: #b26a00;
  --bad: #b23b3b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

header { padding: 1rem 1.25rem 0; display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.repo { color: var(--muted); font-size: 0.95rem; }
h1 { margin: 0; font-size: 1.5rem; }
h1 .sub { font-weight: 400; color: var(--muted); font-size: 1rem; margin-left: 0.5rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.5rem; }

main {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 1rem 1.25rem;
  align-items: flex-start;
}

.board-wrap { flex: 1 1 520px; max-width: 680px; }
#board { width: 100%; height: auto; display: block; touch-action: manipulation; }

.panel { flex: 1 1 240px; max-width: 360px; }

.status { font-size: 1.1rem; font-weight: 600; min-height: 1.6em; }
.status.win { color: var(--accent); }
.bound { color: var(--muted); min-height: 1.5em; margin-bottom: 0.75rem; }

.buttons { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
button {
  font: inherit;
  padding: 0.4rem 0.9rem;
  border: 1px solid #8a7a5c;
  border-radius: 6px;
  background: #fffaf0;
  cursor: pointer;
}
button:hover:not(:disabled) { background: #fff; }
button:disabled { opacity: 0.45; cursor: default; }

.toggle { display: block; margin-bottom: 0.5rem; cursor: pointer; }
.help { font-size: 0.9rem; color: var(--muted); margin: 0; padding: 0; list-style: none; }
.help li { margin-bottom: 0.35rem; }
.key { display: inline-block; width: 0.9em; height: 0.9em; vertical-align: -0.1em; margin-right: 0.2em; }
.key-s { background: var(--zone); border: 1px solid rgba(70, 120, 200, 0.6); }
.key-a { border: 2px solid #2a6fd6; border-radius: 50%; }
.key-p { border: 2px dashed #2a6fd6; border-radius: 50%; }

.moves {
  font: 0.9rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  padding-left: 2.2em;
  margin: 0.75rem 0 0;
  max-height: 22rem;
  overflow-y: auto;
}

.about { max-width: 760px; padding: 0 1.25rem 2rem; }
.rules { display: flex; gap: 1rem; align-items: center; }
.shape { width: 110px; flex: none; }
.byline { color: var(--muted); font-size: 0.85rem; }
code { font-size: 0.9em; }

/* board */
.cell { fill: var(--board); stroke: var(--line); stroke-width: 0.03; }
.cell.playable { cursor: pointer; }
.cell.playable:hover { fill: #ecd3a6; }
.zone { fill: var(--zone); pointer-events: none; }
.coord { font-size: 0.42px; fill: var(--muted); text-anchor: middle; dominant-baseline: central; }
.stone-b { fill: #1d1d1d; }
.stone-w { fill: #fdfdfd; stroke: #555; stroke-width: 0.04; }
.last { fill: none; stroke: var(--accent); stroke-width: 0.07; }
.ring-a { fill: none; stroke: #2a6fd6; stroke-width: 0.08; pointer-events: none; }
.ring-p { fill: none; stroke: #2a6fd6; stroke-width: 0.08; stroke-dasharray: 0.15 0.1; pointer-events: none; }
.win-cell { fill: none; stroke: var(--win); stroke-width: 0.14; }
.win-path { fill: none; stroke: var(--win); stroke-width: 0.16; stroke-linecap: round; stroke-linejoin: round; opacity: 0.9; }
.shape rect { fill: #1d1d1d; stroke: var(--bg); stroke-width: 0.06; }

/* White hints (ninepaths candidate style) */
.hint-disc { fill: #fdfdfd; fill-opacity: 0.92; stroke-width: 0.08; }
.hint-disc.hint-good { stroke: var(--good); }
.hint-disc.hint-hot { stroke: var(--hot); }
.hint-disc.hint-bad { stroke: var(--bad); }
.hint-disc.hint-forced { stroke: #1f4fc4; stroke-width: 0.12; }
.hint-forced-mark { fill: #1f4fc4; }
.hint-lost { font-size: 0.7px; font-weight: 700; text-anchor: middle; dominant-baseline: central; fill: var(--bad); }
.hint-loss { font-size: 0.36px; font-weight: 650; text-anchor: middle; dominant-baseline: central; fill: #222; }
.hint-left { font-size: 0.2px; text-anchor: middle; dominant-baseline: central; fill: #222; fill-opacity: 0.7; }