:root{
  --bg:#020309;
  --bg2:#070a14;
  --panel:#0d1226;
  --text:#e9ecff;
  --muted:#aab1d6;
  --line:rgba(255,190,110,0.20);
  --accent:rgba(255,185,95,1);
  --accent2:rgba(255,145,77,1);
  --shadow:rgba(0,0,0,0.55);

  --p1:#ffb85c;
  --p2:#6fe3ff;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color:var(--text);
  background: radial-gradient(ellipse at top, #0b0f22, var(--bg));
  overflow-x:hidden;
}

.bg{position:fixed; inset:0; z-index:-1;}
.bg-grid{
  position:absolute; inset:-2px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 70px 70px;
  opacity:0.35;
  mask-image: radial-gradient(circle at 50% 10%, black 0%, transparent 70%);
}
.bg-vignette{
  position:absolute; inset:0;
  background: radial-gradient(circle at 50% 0%, transparent 0%, rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.85) 100%);
}
.bg-ember{
  position:absolute; inset:0;
  background: radial-gradient(circle at 50% 40%, rgba(255,190,110,0.10), transparent 60%);
  opacity:0.9;
}

.wrap{max-width:1200px; margin:0 auto; padding: 1.25rem 1.25rem 3rem;}
.topbar{
  max-width:1200px;
  margin:0 auto;
  padding: 1.25rem 1.25rem 0.25rem;
  display:flex;
  gap:1rem;
  align-items:center;
  justify-content:space-between;
}
.brand{display:flex; gap:0.9rem; align-items:center}
.brand-mark{
  width:44px; height:44px;
  border-radius:12px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(255,185,95,0.14), rgba(255,145,77,0.10));
  border:1px solid var(--line);
  letter-spacing:0.12em;
  font-weight:900;
}
.brand-title{font-weight:850; letter-spacing:0.03em}
.brand-sub{color:var(--muted); font-size:0.92rem; margin-top:0.15rem}

.hud{display:flex; gap:0.75rem; flex-wrap:wrap; justify-content:flex-end}
.hud-item{
  border:1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.16);
  padding:0.5rem 0.7rem;
  border-radius:12px;
  min-width:84px;
}
.hud-item .k{display:block; color:var(--muted); font-size:0.75rem; letter-spacing:0.14em; text-transform:uppercase}
.hud-item .v{display:block; font-weight:800}

.layout{
  display:grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap:1.25rem;
  margin-top:1rem;
}

.glow-frame{
  position:relative;
  background: linear-gradient(180deg, rgba(13,18,38,0.88), rgba(7,10,20,0.88));
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow: 0 20px 60px var(--shadow);
  overflow:hidden;
}
.glow-frame::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(circle at 20% 0%, rgba(255,190,110,0.18), transparent 55%),
    radial-gradient(circle at 80% 100%, rgba(255,145,77,0.14), transparent 55%);
  opacity:0.65;
  pointer-events:none;
  filter: blur(12px);
}

@keyframes nodeBreath {
  0%   { box-shadow: 0 18px 55px rgba(0,0,0,0.55), 0 0 22px rgba(255,180,90,0.16); }
  50%  { box-shadow: 0 22px 70px rgba(0,0,0,0.60), 0 0 44px rgba(255,190,110,0.34); }
  100% { box-shadow: 0 18px 55px rgba(0,0,0,0.55), 0 0 22px rgba(255,180,90,0.16); }
}
.glow-frame{ animation: nodeBreath 7.5s ease-in-out infinite; }
.glow-frame:hover{ animation-play-state: paused; }

.board-card{padding:1.1rem}
.board-head{display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; align-items:center}
.board-title{font-weight:900; letter-spacing:0.05em}
.controls{display:flex; gap:0.65rem; flex-wrap:wrap; align-items:center}

.toggle{
  display:flex; align-items:center; gap:0.45rem;
  color:rgba(235,238,255,0.92);
  font-size:0.9rem;
  padding:0.35rem 0.55rem;
  border-radius:999px;
  border:1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.12);
}
.toggle input{accent-color: var(--accent)}

.select{
  display:flex; align-items:center; gap:0.45rem;
  padding:0.35rem 0.55rem;
  border-radius:999px;
  border:1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.12);
}
.select-label{color:var(--muted); font-size:0.85rem}
select{
  background: rgba(0,0,0,0.20);
  color:var(--text);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:10px;
  padding:0.35rem 0.5rem;
}

.btn{
  appearance:none;
  border:1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
  color:var(--text);
  padding:0.55rem 0.85rem;
  border-radius:999px;
  cursor:pointer;
  text-decoration:none;
  font-weight:800;
}
.btn:hover{border-color:rgba(255,190,110,0.25)}

.board-wrap{margin-top:0.9rem; display:grid; gap:0.85rem}
.board{
  width:100%;
  aspect-ratio: 1 / 1;
  display:grid;
  grid-template-columns: repeat(11, 1fr);
  border-radius:14px;
  border:1px solid rgba(255,255,255,0.10);
  overflow:hidden;
  background: radial-gradient(circle at center, rgba(255,190,110,0.06), rgba(0,0,0,0.25));
}

.cell{
  position:relative;
  border:1px solid rgba(255,255,255,0.06);
  cursor:pointer;
  user-select:none;
  background: rgba(0,0,0,0.08);
}
.cell:hover{ outline:1px solid rgba(255,190,110,0.22); outline-offset:-1px; }

.cell::after{
  content:"";
  position:absolute;
  inset:0;
  background: var(--cellGlow, transparent);
  opacity: var(--cellGlowA, 0);
  transition: opacity 220ms ease;
} 

.cell::after{ pointer-events:none; }

.stone{
  position:absolute;
  inset: 22%;
  border-radius:999px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.45);
}

.stone.p1{ background: radial-gradient(circle at 35% 30%, rgba(255,255,255,0.35), rgba(255,184,92,0.95)); }
.stone.p2{ background: radial-gradient(circle at 35% 30%, rgba(255,255,255,0.30), rgba(111,227,255,0.95)); }

.legend{
  display:flex; gap:0.7rem; flex-wrap:wrap; align-items:center;
  color:var(--muted); font-size:0.9rem;
}
.dot{width:10px; height:10px; border-radius:999px; display:inline-block; margin-right:0.25rem}
.dot.you{background: var(--p1)}
.dot.ai{background: var(--p2)}
.dot.neutral{background: rgba(255,255,255,0.28)}

.board-foot{margin-top:0.85rem}
.small{font-size:0.85rem}
.muted{color:var(--muted); line-height:1.55}

.side{display:grid; gap:1.1rem}
.panel{padding:1.15rem}
.panel h2{margin:0 0 0.65rem; font-weight:900}

.trainer-out{
  min-height: 120px;
  white-space: pre-wrap;
}

.divider{height:1px; background:rgba(255,255,255,0.08); margin:0.95rem 0}

.mini-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:0.7rem;
}
.stat{
  border:1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.14);
  border-radius:14px;
  padding:0.65rem 0.7rem;
}
.stat .k{color:var(--muted); font-size:0.78rem; letter-spacing:0.12em; text-transform:uppercase}
.stat .v{font-weight:900; margin-top:0.25rem}

.steps{
  margin:0.25rem 0 0;
  padding-left: 1.15rem;
  color:rgba(235,238,255,0.92);
  line-height:1.7;
}

.footer{margin-top:1.25rem; padding:0.95rem 1.1rem}
.footer-row{display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap}

@media (max-width: 980px){
  .layout{grid-template-columns:1fr}
}

.btn-row{display:flex; gap:0.6rem; flex-wrap:wrap; margin-top:0.55rem}

.score-list{
  display:grid;
  gap:0.5rem;
  max-height: 260px;
  overflow:auto;
  padding-right: 0.25rem;
}
.score-item{
  border:1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.14);
  border-radius:14px;
  padding:0.6rem 0.7rem;
}
.score-item strong{color:rgba(235,238,255,0.95)}
.score-item .row{display:flex; justify-content:space-between; gap:0.75rem; flex-wrap:wrap}