:root{
  /* single geometry token — everything derives from checker size (CSS owns the math) */
  --checker: clamp(16px, 5.2vw, 30px);
  --pt-w: calc(var(--checker) * 1.18);
  --bar-w: calc(var(--checker) * 1.3);
  --off-w: calc(var(--checker) * 0.9);
  --row-h: calc(var(--checker) * 6.4);
  --stack-step: calc(var(--checker) * 0.9);
  --gap: calc(var(--checker) * 0.18);

  /* palette: walnut + slate-teal felt + bone/sienna points, ivory vs espresso armies */
  --wood-1:#2c1e12; --wood-2:#4a341f; --wood-edge:#6b4a2a;
  --felt:#1f4a45; --felt-2:#245049;
  --pt-a:#e4d4ac; --pt-b:#a8482c;
  --p1:#f2ead6; --p1-edge:#c9bd9c; --p1-ink:#6b5d3f;
  --p2:#2b2521; --p2-edge:#000; --p2-ink:#d8c9a8;
  --brass:#d7a94b; --brass-glow:#f2cf77;
  --ink:#f2ead6; --ink-dim:#b9ad92;
  --shadow: 0 2px 5px rgba(0,0,0,.45);
  --font-d: "Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --font-u: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-n: ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
.theme-dark{ --felt:#16332f; --felt-2:#1b3a34; --wood-1:#1c130b; --wood-2:#33230f; --pt-a:#cbb98c; }

*{ box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html,body{ margin:0; height:100%; }
body{
  font-family:var(--font-u); color:var(--ink);
  background:
    radial-gradient(120% 90% at 50% -10%, #3a2a1a 0%, #1a120a 70%);
  display:flex; align-items:center; justify-content:center; padding:10px; min-height:100%;
}
.wrap{ width:100%; max-width:520px; }

/* ---- HUD ---- */
.hud{ display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:8px 12px; }
.hud__who{ display:flex; align-items:baseline; gap:8px; }
.hud__name{ font-family:var(--font-d); font-size:1.05rem; letter-spacing:.02em; }
.hud__pip{ font-family:var(--font-n); font-size:.8rem; color:var(--ink-dim); }
.hud__dot{ width:9px; height:9px; border-radius:50%; background:#000a; box-shadow:inset 0 0 0 1px #fff2; }
.hud.is-active .hud__dot{ background:var(--brass); box-shadow:0 0 8px var(--brass); }
.hud.is-active .hud__name{ color:#fff; }

/* ---- board frame ---- */
.board-frame{
  background:linear-gradient(145deg,var(--wood-edge),var(--wood-1));
  padding:calc(var(--checker)*0.42); border-radius:14px;
  box-shadow:0 10px 30px #000a, inset 0 0 0 2px #0006;
}
.board{
  position:relative; margin:0 auto;
  width:calc(12*var(--pt-w) + var(--bar-w) + var(--off-w));
  height:calc(2*var(--row-h));
  display:grid;
  grid-template-columns:repeat(6,var(--pt-w)) var(--bar-w) repeat(6,var(--pt-w)) var(--off-w);
  grid-template-rows:var(--row-h) var(--row-h);
  background:linear-gradient(var(--felt),var(--felt-2));
  border-radius:6px; overflow:hidden;
  box-shadow:inset 0 0 22px #0007;
}

/* ---- points ---- */
.cell{ position:relative; }
.point{ position:absolute; inset:0; background:linear-gradient(var(--pt-dir,180deg), var(--pt-col), #0000); opacity:.92; }
.cell--bottom .point{ --pt-dir:0deg; }
.cell--top .point{ clip-path:polygon(2% 0,98% 0,50% 90%); }
.cell--bottom .point{ clip-path:polygon(50% 10%,2% 100%,98% 100%); }
.point--a{ --pt-col:var(--pt-a); }
.point--b{ --pt-col:var(--pt-b); }

/* ---- checkers ---- */
.checker{
  position:absolute; left:50%; width:var(--checker); height:var(--checker);
  border-radius:50%; transform:translateX(-50%);
  --step:min(var(--stack-step), calc((var(--row-h) - var(--checker) - 4px)/max(var(--n) - 1,1)));
  box-shadow:0 1px 2px rgba(0,0,0,.5); transition:top .18s ease, bottom .18s ease;
}
.cell--top .checker{ top:calc(2px + var(--i)*var(--step)); }
.cell--bottom .checker{ bottom:calc(2px + var(--i)*var(--step)); }
.checker--p1{ background:radial-gradient(circle at 35% 30%,#fff,var(--p1) 55%,#d9cfb4);
  border:1px solid var(--p1-edge); }
.checker--p2{ background:radial-gradient(circle at 35% 30%,#5a5049,var(--p2) 60%,#000);
  border:1px solid var(--p2-edge); }
.checker__n{ position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-n); font-size:calc(var(--checker)*0.42); font-weight:700; }
.checker--p1 .checker__n{ color:var(--p1-ink); }
.checker--p2 .checker__n{ color:var(--p2-ink); }

/* ---- selection / targets ---- */
.cell.is-selected .point{ filter:brightness(1.5) drop-shadow(0 0 6px var(--brass)); }
.cell.is-target::after{
  content:""; position:absolute; left:50%; width:calc(var(--checker)*0.5); height:calc(var(--checker)*0.5);
  border-radius:50%; transform:translateX(-50%); background:var(--brass);
  box-shadow:0 0 10px var(--brass); animation:pulse 1s ease-in-out infinite;
}
.cell--top.is-target::after{ top:calc(var(--row-h)*0.5); }
.cell--bottom.is-target::after{ bottom:calc(var(--row-h)*0.5); }
@keyframes pulse{ 50%{ opacity:.35; transform:translateX(-50%) scale(.7);} }

/* ---- bar ---- */
.bar{ grid-column:7; grid-row:1/3; position:relative;
  background:linear-gradient(90deg,#0005,#0002,#0005); box-shadow:inset 0 0 12px #0008; }
.bar__slot{ position:absolute; left:50%; transform:translateX(-50%); width:var(--checker); }
.bar__slot--p2{ top:6px; }
.bar__slot--p1{ bottom:6px; }
.bar__slot .checker{ position:relative; left:auto; transform:none; display:block; margin-bottom:calc(var(--checker)*-0.45); }

/* ---- cube (the signature: position encodes ownership) ---- */
.cube{
  position:absolute; left:50%; width:calc(var(--checker)*1.05); height:calc(var(--checker)*1.05);
  transform:translate(-50%,-50%); top:50%; transition:top .4s cubic-bezier(.5,1.6,.4,1);
  background:linear-gradient(145deg,#f6eeda,#d9cca8); border-radius:6px;
  border:1px solid #b7a06a; box-shadow:0 3px 8px #000a, inset 0 0 0 1px #fff8;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-n); font-weight:800; color:#3a2c14; font-size:calc(var(--checker)*0.5);
}
.cube[data-owner="2"]{ top:9%; }
.cube[data-owner="1"]{ top:91%; }
.cube[data-owner="0"]{ top:50%; }
.cube.is-live{ box-shadow:0 0 14px var(--brass), 0 3px 8px #000a; }

/* ---- off trays ---- */
.off{ grid-column:14; grid-row:1/3; position:relative; background:#0003; box-shadow:inset 0 0 10px #0007; }
.off__half{ position:absolute; left:4px; right:4px; height:50%; display:flex; flex-direction:column; gap:2px; padding:5px 0; }
.off__half--p2{ top:0; justify-content:flex-start; }
.off__half--p1{ bottom:0; justify-content:flex-end; }
.off__chip{ height:calc(var(--checker)*0.28); border-radius:3px; }
.off__chip--p1{ background:linear-gradient(var(--p1),#ccc0a0); }
.off__chip--p2{ background:linear-gradient(#4a4038,var(--p2)); }
.off.is-target{ box-shadow:inset 0 0 0 2px var(--brass), inset 0 0 12px var(--brass); }
.off__count{ position:absolute; left:0; right:0; text-align:center; font-family:var(--font-n);
  font-size:.62rem; color:var(--ink-dim); }
.off__count--p2{ top:2px; } .off__count--p1{ bottom:2px; }

/* ---- dice ---- */
.dice{ position:absolute; left:calc(6*var(--pt-w) + var(--bar-w)); right:var(--off-w);
  display:flex; gap:7px; justify-content:center; pointer-events:none; }
.dice--p1{ bottom:calc(var(--row-h)*0.5 - var(--checker)*0.42); }
.dice--p2{ top:calc(var(--row-h)*0.5 - var(--checker)*0.42); }
.die{ position:relative; width:calc(var(--checker)*0.82); height:calc(var(--checker)*0.82);
  border-radius:22%; background:linear-gradient(145deg,#fbf5e6,#e2d7bd);
  box-shadow:0 3px 7px #000a, inset 0 0 0 1px #fff9; }
.die.is-used{ opacity:.34; filter:grayscale(.5); }
.pip{ position:absolute; width:22%; height:22%; border-radius:50%; background:#2a2018;
  transform:translate(-50%,-50%); }

/* ---- action bar ---- */
.actions{ display:flex; align-items:center; gap:10px; padding:12px; min-height:60px; flex-wrap:wrap; }
.msg{ font-family:var(--font-d); font-size:1rem; color:var(--ink-dim); flex:1 1 auto; }
.btn{ font-family:var(--font-u); font-weight:650; font-size:.95rem; border:0; border-radius:10px;
  padding:11px 18px; color:#241a0c; cursor:pointer; background:linear-gradient(var(--brass),#b9863a);
  box-shadow:0 3px 0 #7c5a24, var(--shadow); transition:transform .06s; }
.btn:active{ transform:translateY(2px); box-shadow:0 1px 0 #7c5a24; }
.btn--ghost{ background:#ffffff14; color:var(--ink); box-shadow:inset 0 0 0 1px #ffffff33; }
.btn--danger{ background:linear-gradient(#c76b52,#9d4630); color:#fff; box-shadow:0 3px 0 #6e2f1f,var(--shadow); }

/* ---- overlay ---- */
.overlay{ position:absolute; inset:0; background:#0b0805e8; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:14px; text-align:center; padding:20px; }
.overlay[hidden]{ display:none; }
.overlay__title{ font-family:var(--font-d); font-size:1.7rem; color:#fff; }
.overlay__sub{ color:var(--ink-dim); font-size:.95rem; }
.checker.fly{ position:absolute; left:0; top:0; transform:none; margin:0; z-index:60;
  pointer-events:none; box-shadow:0 4px 10px #000b; }

/* HUD 'New' affordance — mid-game abandon entry point */
.hud{ position:relative; }
.hud__new{ margin-left:auto; font-family:var(--font-u); font-size:.78rem; font-weight:600;
  color:var(--ink-dim); background:#ffffff0f; border:1px solid #ffffff22; border-radius:8px;
  padding:5px 10px; cursor:pointer; }
.hud__new:active{ background:#ffffff1a; }
.hud__new[hidden]{ display:none; }

/* dice-roll animation */
.die.is-rolling{ animation:die-tumble .16s ease-in-out infinite alternate; }
@keyframes die-tumble{
  from{ transform:rotate(-14deg) translateY(-2px); }
  to  { transform:rotate(14deg)  translateY(2px); }
}

/* opening roll: one die per player's side, both visible together */
.opening-dice{ position:absolute; inset:0; pointer-events:none; z-index:70; }
.opening-die--p1, .opening-die--p2{
  position:absolute; left:50%; transform:translateX(-50%);
  width:calc(var(--checker)*1.1); height:calc(var(--checker)*1.1);
}
.opening-die--p1{ bottom:calc(var(--row-h)*0.5 - var(--checker)*0.55); }
.opening-die--p2{ top:calc(var(--row-h)*0.5 - var(--checker)*0.55); }
.opening-die--winner{
  animation:opening-winner .5s ease-in-out infinite alternate;
  box-shadow:0 0 22px var(--brass), 0 3px 8px #000a, inset 0 0 0 1px #fff9;
}
@keyframes opening-winner{
  from{ transform:translateX(-50%) scale(1); }
  to  { transform:translateX(-50%) scale(1.14); }
}
.opening-die--tie{ opacity:.55; }