/* style.css — all styling */
:root{
  color-scheme: dark;
  --bg1:#15110d;
  --bg2:#0c0907;
  --panel:#1b1612;
  --panel-2:#221b16;
  --border:#33291f;
  --text:#ece3d4;
  --muted:#9c8b75;
  --accent:#d4a857;
  --accent-soft:rgba(212,168,87,.18);
  --frame-1:#3a2c1f;
  --frame-2:#241a12;
  --sq-dark:#2e2218;
  --sq-light:#b89968;
  --sq-dark-hi:rgba(255,255,255,.04);
  --sq-last:rgba(212,168,87,.32);
  --red-1:#ff8a6f;
  --red-2:#c63a2e;
  --red-3:#7a1d14;
  --red-edge:#5e160f;
  --ivory-1:#fffaf0;
  --ivory-2:#e6d6b8;
  --ivory-3:#b39a73;
  --ivory-edge:#8a7456;
  --gold:#e8c87a;
  --shadow:0 10px 30px rgba(0,0,0,.5);
}

@media (prefers-color-scheme: light){
  :root{
    color-scheme: light;
    --bg1:#e9e0cf;
    --bg2:#d8ccb4;
    --panel:#f6efe1;
    --panel-2:#efe6d4;
    --border:#d8c9aa;
    --text:#2a2118;
    --muted:#6f5f48;
    --accent:#9a6a1e;
    --accent-soft:rgba(154,106,30,.15);
    --frame-1:#6e5236;
    --frame-2:#5a4128;
    --sq-dark:#6b4f33;
    --sq-light:#e8d3a6;
    --sq-dark-hi:rgba(255,255,255,.06);
    --sq-last:rgba(154,106,30,.28);
    --shadow:0 8px 24px rgba(80,60,30,.25);
  }
}

html[data-theme="dark"]{
  color-scheme:dark;
  --bg1:#15110d;--bg2:#0c0907;--panel:#1b1612;--panel-2:#221b16;
  --border:#33291f;--text:#ece3d4;--muted:#9c8b75;--accent:#d4a857;
  --accent-soft:rgba(212,168,87,.18);--frame-1:#3a2c1f;--frame-2:#241a12;
  --sq-dark:#2e2218;--sq-light:#b89968;--sq-dark-hi:rgba(255,255,255,.04);
  --sq-last:rgba(212,168,87,.32);
  --red-1:#ff8a6f;--red-2:#c63a2e;--red-3:#7a1d14;--red-edge:#5e160f;
  --ivory-1:#fffaf0;--ivory-2:#e6d6b8;--ivory-3:#b39a73;--ivory-edge:#8a7456;
  --gold:#e8c87a;--shadow:0 10px 30px rgba(0,0,0,.5);
}
html[data-theme="light"]{
  color-scheme:light;
  --bg1:#e9e0cf;--bg2:#d8ccb4;--panel:#f6efe1;--panel-2:#efe6d4;
  --border:#d8c9aa;--text:#2a2118;--muted:#6f5f48;--accent:#9a6a1e;
  --accent-soft:rgba(154,106,30,.15);--frame-1:#6e5236;--frame-2:#5a4128;
  --sq-dark:#6b4f33;--sq-light:#e8d3a6;--sq-dark-hi:rgba(255,255,255,.06);
  --sq-last:rgba(154,106,30,.28);
  --shadow:0 8px 24px rgba(80,60,30,.25);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;}
body{
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 70% -10%, var(--bg1), var(--bg2) 70%);
  color:var(--text);
  overflow:hidden;
  touch-action:manipulation;
  -webkit-font-smoothing:antialiased;
}

.app{
  display:flex; flex-direction:column;
  height:100%; min-height:100%;
  max-width:1200px; margin:0 auto;
}

/* ---------- Top bar ---------- */
.topbar{
  display:flex; align-items:center; gap:16px;
  padding:14px 20px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,.02), transparent);
}
.brand{display:flex;align-items:center;gap:10px;}
.brand .logo{
  width:22px;height:22px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, var(--red-1), var(--red-2) 60%, var(--red-3));
  box-shadow:inset 0 -2px 4px rgba(0,0,0,.4), inset 0 2px 3px rgba(255,255,255,.3), 0 2px 6px rgba(0,0,0,.4);
}
.brand .title{
  font-size:20px; font-weight:700; letter-spacing:.5px;
}
.turn{
  margin-left:auto;
  display:flex; align-items:center; gap:8px;
  padding:7px 14px; border-radius:999px;
  background:var(--panel-2); border:1px solid var(--border);
  font-size:13px; font-weight:600; color:var(--muted);
  transition:all .25s ease;
}
.turn .dot{width:9px;height:9px;border-radius:50%;background:var(--muted);transition:all .25s;}
.turn.red{color:#ff7a66;border-color:rgba(198,58,46,.5);}
.turn.red .dot{background:var(--red-2);box-shadow:0 0 10px var(--red-2);}
.turn.black{color:var(--ivory-2);border-color:rgba(230,214,184,.4);}
.turn.black .dot{background:var(--ivory-2);box-shadow:0 0 10px var(--ivory-2);}
.turn.over{color:var(--accent);border-color:var(--accent);}
.turn.over .dot{background:var(--accent);box-shadow:0 0 10px var(--accent);}

.ctrls{display:flex;gap:10px;}
.btn{
  font:inherit; font-size:13px; font-weight:600;
  padding:8px 14px; border-radius:10px;
  background:var(--panel-2); color:var(--text);
  border:1px solid var(--border);
  cursor:pointer; transition:all .18s ease;
}
.btn:hover{background:var(--panel); border-color:var(--accent); transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn.primary{
  background:linear-gradient(180deg, var(--accent), #b8862c);
  color:#1a1206; border-color:transparent;
  box-shadow:0 4px 12px rgba(212,168,87,.3);
}
.btn.primary:hover{filter:brightness(1.08);}
.btn.off{opacity:.55;}

/* ---------- Main ---------- */
.main{
  flex:1; display:flex; gap:22px; padding:18px 20px;
  min-height:0; align-items:stretch;
}
.board-wrap{
  flex:1; display:flex; align-items:center; justify-content:center;
  min-width:0; min-height:0; position:relative;
}

/* ---------- Board frame ---------- */
.board-frame{
  position:relative;
  padding:26px;
  border-radius:14px;
  background:
    linear-gradient(135deg, var(--frame-1), var(--frame-2));
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255,255,255,.08),
    inset 0 0 0 1px rgba(0,0,0,.3);
  display:grid;
  grid-template-columns: 18px 1fr;
  grid-template-rows: 18px 1fr;
  gap:6px;
}
.board-frame::before{
  content:""; position:absolute; inset:14px; border-radius:8px;
  box-shadow:inset 0 0 0 1px var(--accent-soft);
  pointer-events:none;
}
.coords{display:flex; color:var(--accent); font-size:10px; font-weight:700; opacity:.7;
  letter-spacing:1px;}
.coords-top{grid-column:2; grid-row:1; justify-content:space-around; align-items:center;}
.coords-left{grid-column:1; grid-row:2; flex-direction:column; justify-content:space-around; align-items:center;}
.coords span{display:flex; align-items:center; justify-content:center; width:100%; height:100%;}

.board-stage{
  grid-column:2; grid-row:2; position:relative;
  border-radius:4px; overflow:hidden;
  box-shadow:0 0 0 1px rgba(0,0,0,.4), inset 0 0 18px rgba(0,0,0,.35);
}
.board{
  position:absolute; inset:0;
  display:grid;
  grid-template-columns:repeat(8,1fr);
  grid-template-rows:repeat(8,1fr);
}
.highlights, .pieces{
  position:absolute; inset:0; pointer-events:none;
}
.sq{position:relative;}
.sq.light{background:var(--sq-light);}
.sq.dark{background:var(--sq-dark); box-shadow:inset 0 0 0 1px rgba(0,0,0,.18);}
.sq.last-from::after, .sq.last-to::after{
  content:""; position:absolute; inset:0;
  background:var(--sq-last);
  pointer-events:none;
}
.sq.last-to::after{ box-shadow:inset 0 0 0 2px var(--accent); }

/* ---------- Move dots ---------- */
.move-dot{
  position:absolute; width:30%; height:30%;
  transform:translate(-50%,-50%);
  border-radius:50%;
  background:radial-gradient(circle at 40% 40%, rgba(255,255,255,.85), rgba(255,255,255,.25));
  box-shadow:0 0 10px rgba(255,255,255,.5);
  animation:pop .25s ease;
}
.move-dot.capture{
  width:46%; height:46%;
  background:transparent;
  border:3px solid var(--accent);
  box-shadow:0 0 14px var(--accent), inset 0 0 10px rgba(212,168,87,.4);
  animation:pulse 1.1s ease-in-out infinite;
}
@keyframes pop{from{transform:translate(-50%,-50%) scale(.4);opacity:0}to{transform:translate(-50%,-50%) scale(1);opacity:1}}
@keyframes pulse{0%,100%{opacity:.85}50%{opacity:.4}}

/* ---------- Pieces ---------- */
.piece{
  position:absolute;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  transition:left .3s cubic-bezier(.34,1.3,.5,1), top .3s cubic-bezier(.34,1.3,.5,1), opacity .3s, transform .3s;
  z-index:5;
  will-change:left,top;
  cursor:pointer;
}
.piece .face{
  position:absolute; inset:14%;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
}
.piece .kring{
  position:absolute; inset:8%;
  border-radius:50%;
  border:2px dashed rgba(0,0,0,.18);
  opacity:.5;
}
.piece .crown{
  position:relative; z-index:2;
  font-size:50%;
  color:var(--gold);
  text-shadow:0 1px 2px rgba(0,0,0,.6);
  opacity:0; transform:scale(.5);
  transition:all .3s ease;
}
.piece.king .crown{opacity:1; transform:scale(1);}
.piece.king .kring{border-color:var(--gold); opacity:.8; border-style:solid; box-shadow:0 0 8px var(--accent-soft);}

.piece.red{
  background:radial-gradient(circle at 34% 28%, var(--red-1), var(--red-2) 52%, var(--red-3) 100%);
  border:2px solid var(--red-edge);
  box-shadow:
    inset 0 -4px 8px rgba(0,0,0,.45),
    inset 0 4px 6px rgba(255,255,255,.28),
    inset 0 0 0 1px rgba(0,0,0,.25),
    0 5px 10px rgba(0,0,0,.5),
    0 1px 0 rgba(255,255,255,.1);
}
.piece.ivory{
  background:radial-gradient(circle at 34% 28%, var(--ivory-1), var(--ivory-2) 55%, var(--ivory-3) 100%);
  border:2px solid var(--ivory-edge);
  box-shadow:
    inset 0 -4px 8px rgba(90,70,40,.4),
    inset 0 4px 6px rgba(255,255,255,.5),
    inset 0 0 0 1px rgba(0,0,0,.12),
    0 5px 10px rgba(0,0,0,.45);
}
.piece.selected{
  transform:translateY(-3px) scale(1.06);
  z-index:8;
  box-shadow:
    inset 0 -4px 8px rgba(0,0,0,.45),
    inset 0 4px 6px rgba(255,255,255,.3),
    0 0 0 3px var(--accent),
    0 0 22px var(--accent),
    0 8px 14px rgba(0,0,0,.55);
}
.piece.captured{
  opacity:0 !important;
  transform:scale(.3) rotate(20deg);
}

/* ---------- Side panel ---------- */
.side{
  width:280px; flex-shrink:0;
  display:flex; flex-direction:column; gap:14px;
  overflow:auto;
}
.card{
  background:linear-gradient(180deg, var(--panel), var(--panel-2));
  border:1px solid var(--border);
  border-radius:14px;
  padding:16px;
  box-shadow:var(--shadow);
}
.scorecard .scorerow{
  display:flex; align-items:center; gap:12px;
}
.chip{
  width:30px; height:30px; border-radius:50%; flex-shrink:0;
  border:2px solid;
}
.chip.red{
  background:radial-gradient(circle at 34% 28%, var(--red-1), var(--red-2) 55%, var(--red-3));
  border-color:var(--red-edge);
  box-shadow:inset 0 -2px 4px rgba(0,0,0,.4), inset 0 2px 3px rgba(255,255,255,.3);
}
.chip.ivory{
  background:radial-gradient(circle at 34% 28%, var(--ivory-1), var(--ivory-2) 55%, var(--ivory-3));
  border-color:var(--ivory-edge);
  box-shadow:inset 0 -2px 4px rgba(90,70,40,.35), inset 0 2px 3px rgba(255,255,255,.5);
}
.scoretext{flex:1;}
.scorelabel{font-size:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.8px;}
.scorenum{font-size:24px; font-weight:800; line-height:1;}
.captured{display:flex; flex-wrap:wrap; gap:3px; max-width:70px; justify-content:flex-end;}
.cap-dot{width:8px; height:8px; border-radius:50%; opacity:.7;}
.cap-dot.red{background:var(--red-2);}
.cap-dot.ivory{background:var(--ivory-2); border:1px solid var(--ivory-edge);}
.divider{height:1px; background:var(--border); margin:13px 0;}

.statuscard{display:flex; align-items:center; gap:14px;}
.statusicon{
  width:42px; height:42px; border-radius:50%; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  font-size:20px; font-weight:800;
  background:var(--panel-2); border:1px solid var(--border);
  color:var(--muted);
}
.statusicon.red{color:var(--red-2); border-color:var(--red-edge);}
.statusicon.ivory{color:var(--ivory-2); border-color:var(--ivory-edge);}
.statusicon.win{color:var(--accent); border-color:var(--accent); box-shadow:0 0 14px var(--accent-soft);}
.statusicon.lose{color:#c63a2e; border-color:#c63a2e;}
.statusicon.thinking{animation:spin 1.4s linear infinite;}
@keyframes spin{to{transform:rotate(360deg)}}
.statustext{font-size:14px; line-height:1.45; color:var(--text);}

.helpcard h3{
  margin:0 0 10px; font-size:13px; text-transform:uppercase;
  letter-spacing:1px; color:var(--accent);
}
.helpcard ul{margin:0; padding-left:18px; font-size:13px; line-height:1.6; color:var(--muted);}
.helpcard li{margin-bottom:5px;}

/* ---------- Responsive ---------- */
@media (max-width: 860px){
  .main{flex-direction:column; padding:12px; gap:12px;}
  .side{width:100%; flex-direction:row; flex-wrap:wrap; overflow:visible;}
  .side .card{flex:1 1 240px;}
  .helpcard{flex-basis:100%;}
  .topbar{padding:10px 14px; gap:10px; flex-wrap:wrap;}
  .brand .title{font-size:17px;}
  .turn{order:3; margin-left:0; font-size:12px; padding:5px 10px;}
}
@media (max-width: 480px){
  .board-frame{padding:14px;}
  .coords{font-size:8px;}
  .side{flex-direction:column;}
  .side .card{flex-basis:auto;}
  .ctrls .btn{padding:7px 11px; font-size:12px;}
  .helpcard{display:none;}
}
@media (max-height: 620px) and (min-width: 861px){
  .helpcard{display:none;}
}