:root {
  --bg: #14100a;
  --panel: #241c10;
  --line: #453417;
  --ink: #f5eee1;
  --muted: #b3a184;
  --accent: #f5c542;
  --accent-ink: #1a1405;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #42300f 0%, var(--bg) 60%);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.city-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  background: rgba(18, 14, 8, 0.85);
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}
.city-link { color: var(--accent); text-decoration: none; }
.city-link:hover { text-decoration: underline; }
.biz-name { color: var(--muted); }
.practice-badge {
  margin-left: auto;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  font-size: 0.75rem;
}

.table {
  flex: 1;
  width: min(96vw, 40rem);
  margin: 0 auto;
  padding: 1.5rem 0 2.5rem;
  text-align: center;
}
h1 { margin: 0.5rem 0 0.25rem; font-size: 1.8rem; }
.sub { color: var(--muted); margin: 0 0 1.25rem; font-size: 0.95rem; }
.sub code { background: var(--panel); padding: 0 0.3rem; border-radius: 0.3rem; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: center;
  align-items: center;
  margin-bottom: 1rem;
}
fieldset {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  color: var(--muted);
}
legend { padding: 0 0.3rem; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
label { margin: 0 0.5rem 0 0; color: var(--ink); cursor: pointer; }

button {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 0.4rem;
  padding: 0.55rem 1.1rem;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: 0.5; cursor: default; }

.status { min-height: 1.4rem; font-weight: 600; margin: 0.75rem 0; }

.board {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  width: min(94vw, 32rem);
  margin: 0 auto;
  border: 2px solid var(--line);
  border-radius: 0.4rem;
  overflow: hidden;
  background: #e8d5a8;
}
.cell {
  aspect-ratio: 1;
  background: transparent;
  border: none;
  border-right: 1px solid rgba(69, 52, 23, 0.35);
  border-bottom: 1px solid rgba(69, 52, 23, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}
.cell::after {
  content: "";
  width: 82%;
  height: 82%;
  border-radius: 50%;
}
.cell.stone-b::after { background: #14171c; }
.cell.stone-w::after { background: #fafafa; box-shadow: inset 0 0 0 1px #b8b8b8; }
.cell:disabled { cursor: default; }
.cell:not(:disabled):hover { background: rgba(245, 197, 66, 0.45); }
.cell:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.cell.win-line { background: rgba(245, 197, 66, 0.65); }

.score {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.api-note {
  margin-top: 2rem;
  text-align: left;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
.api-note pre {
  background: #100c06;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.75rem;
  overflow-x: auto;
  color: var(--ink);
}
.api-note a { color: var(--accent); }

.footer {
  border-top: 1px solid var(--line);
  padding: 0.9rem 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}
.footer a { color: var(--accent); }

.pvp-link {
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}