:root{
  --bg:#0e1116; --panel:#161b22; --line:#242c37; --ink:#e6edf3; --dim:#9aa7b4;
  --gold:#f0c24f; --blue:#7aa7ff; --good:#5ad38b; --bad:#ff8a7a;
  --wood:#a5713f;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:14px/1.5 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}
#app{display:flex;flex-direction:column;height:100dvh}
header{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#171d26,#12171f)}
h1{font-size:19px;margin:0;letter-spacing:.3px;font-weight:650}
h1 .sub{display:block;font-size:11px;color:var(--dim);font-weight:400;letter-spacing:.2px}
.spacer{flex:1}
button,select{font:inherit;color:var(--ink);background:#1d242e;border:1px solid var(--line);
  border-radius:7px;padding:6px 11px;cursor:pointer}
button:hover,select:hover{background:#26303c;border-color:#36424f}
button:disabled{opacity:.45;cursor:default}
main{flex:1;display:flex;min-height:0}
#stage{position:relative;flex:1;min-width:0;background:radial-gradient(120% 90% at 50% 8%,#1a212b,#0b0e13 70%)}
canvas{display:block;width:100%;height:100%;touch-action:none}
#fallback{position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  text-align:center;padding:24px;color:var(--dim)}
#fallback.on{display:flex}
#banner{position:absolute;left:50%;top:14px;transform:translateX(-50%);
  background:rgba(12,16,22,.86);border:1px solid var(--line);border-radius:999px;
  padding:6px 16px;font-size:13px;opacity:0;transition:opacity .22s;pointer-events:none;white-space:nowrap}
#banner.on{opacity:1}
#scoreline{position:absolute;left:14px;top:14px;display:flex;flex-direction:column;gap:6px;pointer-events:none}
.sc{display:flex;align-items:baseline;gap:8px;background:rgba(12,16,22,.7);
  border:1px solid var(--line);border-radius:8px;padding:4px 10px;min-width:104px}
.sc .who{font-size:11px;color:var(--dim);letter-spacing:.4px;text-transform:uppercase}
.sc b{font-size:17px;margin-left:auto;font-variant-numeric:tabular-nums}
.sc-s{border-color:#5a4a1f}
.sc-n{border-color:#2b3f5e}
aside{width:320px;flex:none;border-left:1px solid var(--line);background:var(--panel);
  overflow:auto;padding:12px;display:flex;flex-direction:column;gap:10px}
.card{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#12171f}
.card h2{margin:0 0 7px;font-size:11px;letter-spacing:.9px;text-transform:uppercase;color:var(--dim);font-weight:600}
.turn{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:600}
.dot{width:12px;height:12px;border-radius:50%;background:var(--gold);flex:none;
  box-shadow:0 0 0 3px rgba(240,194,79,.16)}
.dot.north{background:var(--blue);box-shadow:0 0 0 3px rgba(122,167,255,.16)}
.hint{margin:6px 0 0;color:var(--dim);font-size:12px}
.ctl{display:flex;align-items:center;gap:8px;margin:5px 0}
.ctl label{flex:1;color:var(--dim);font-size:12px}
.ctl select{padding:4px 7px;font-size:12px;max-width:172px}
.row{display:flex;gap:7px;margin-top:8px;flex-wrap:wrap}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;margin:0;
  white-space:pre-wrap;word-break:break-word}
.mono.small{font-size:11.5px;color:var(--dim);margin-top:7px}
.good{color:var(--good)} .bad{color:var(--bad)}
footer{border-top:1px solid var(--line);padding:7px 14px;color:var(--dim);font-size:11px;
  display:flex;gap:14px;justify-content:space-between;flex-wrap:wrap}
dialog{border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);
  padding:0;max-width:760px;width:calc(100% - 32px)}
dialog::backdrop{background:rgba(4,6,9,.66)}
.dlg{padding:16px 18px;max-height:80dvh;overflow:auto}
.dlg h2{margin:0 0 10px;font-size:17px}
.dlg h3{margin:16px 0 6px;font-size:13px;letter-spacing:.5px;text-transform:uppercase;color:var(--dim)}
.dlg p,.dlg li{font-size:13px;line-height:1.62}
.dlg table{border-collapse:collapse;width:100%;font-size:12px;margin:8px 0}
.dlg th,.dlg td{border:1px solid var(--line);padding:4px 7px;text-align:left}
.dlg th{color:var(--dim);font-weight:600;background:#151b23}
.dlg td.num{text-align:right;font-variant-numeric:tabular-nums;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.tablewrap{overflow-x:auto}
.src{color:var(--dim);font-size:11px}
@media (max-width:880px){
  main{flex-direction:column}
  /* The page scrolls on narrow screens: a fixed 100dvh column let the footer paint over the
     side panel on phones. */
  #app{height:auto;min-height:100dvh}
  main{flex:none}
  aside{width:auto;border-left:none;border-top:1px solid var(--line)}
  #stage{height:52dvh;min-height:260px}
}
/* Phones: the title and four buttons did not fit one row (About ran off at 320/360px). */
@media (max-width:480px){
  header{flex-wrap:wrap;row-gap:6px;padding:8px 10px}
  header .spacer{display:none}
  h1{flex:1 0 100%;font-size:17px}
  h1 .sub{display:inline;margin-left:8px}
  header button{flex:1 1 0;min-width:0;padding:6px 2px;white-space:nowrap;font-size:13px}
}

/* [hidden] must beat every class rule that sets display, or an "invisible" row keeps
   eating clicks. This has cost other apps in this fleet a whole debugging session. */
[hidden]{display:none!important}