:root{
  --bg:#0f1724;
  --card:#0b1220;
  --accent-left:#3bd1ff;
  --accent-right:#ff7b7b;
  --muted:#9aa7bf;
  --glass: rgba(255,255,255,0.03);
  --glow-left: 0 0 30px rgba(59,209,255,0.25), 0 0 8px rgba(59,209,255,0.12) inset;
  --glow-right:0 0 30px rgba(255,123,123,0.22), 0 0 8px rgba(255,123,123,0.12) inset;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: radial-gradient(circle at 10% 20%, rgba(59,209,255,0.03), transparent 120px),
              radial-gradient(circle at 90% 80%, rgba(255,123,123,0.02), transparent 120px),
              var(--bg);
  color:#e6eef8;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px;
}

/* game shell */
.game-shell{
  width:980px;
  max-width:calc(100% - 40px);
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border:1px solid rgba(255,255,255,0.04);
  border-radius:14px;
  padding:18px;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
  overflow:hidden;
}

/* header */
.game-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:18px;
}
.game-header h1{margin:0;font-size:20px}
.controls{display:flex;gap:10px;align-items:center}
.btn{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.04);
  padding:8px 12px;
  border-radius:8px;
  color:var(--muted);
  cursor:pointer;
  font-weight:600;
  transition:transform .08s ease, box-shadow .12s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn.primary{
  color:#061025;
  background:linear-gradient(90deg,var(--accent-left),var(--accent-right));
  box-shadow: 0 6px 18px rgba(12,20,30,0.5), 0 0 20px rgba(255,255,255,0.03) inset;
}

/* toggle */
.switch{display:flex;align-items:center;gap:8px;margin-left:6px}
.switch input{display:none}
.switch .slider{
  width:40px;height:22px;background:rgba(255,255,255,0.06);border-radius:30px;position:relative;cursor:pointer;
  box-shadow:inset 0 -3px 6px rgba(0,0,0,0.4);
}
.switch input:checked + .slider{background:linear-gradient(90deg,var(--accent-left),var(--accent-right))}
.switch .slider::after{
  content:"";position:absolute;left:3px;top:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:left .14s ease;
}
.switch input:checked + .slider::after{left:21px}
.switch .label-text{font-size:13px;color:var(--muted);margin-left:6px}

/* arena */
.arena{
  display:grid;
  grid-template-columns: 1fr 520px 1fr;
  gap:16px;
  align-items:stretch;
  padding:6px;
}

/* team panels */
.team{
  background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.0));
  border-radius:10px;
  padding:14px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  border:1px solid rgba(255,255,255,0.03);
}
.team__name{font-weight:700;color:var(--muted)}
.tap-zone{
  width:100%;
  background:rgba(255,255,255,0.02);
  border-radius:8px;
  padding:16px;
  text-align:center;
  font-weight:700;
  cursor:pointer;
  user-select:none;
  transition:transform .06s ease, box-shadow .08s ease;
}
.tap-zone:active{transform:translateY(1px)}
.meter{
  width:100%;
  height:12px;
  background:linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:8px;
  overflow:hidden;
  position:relative;
}
.meter .glow{
  position:absolute;left:0;top:0;bottom:0;width:50%;background:linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  transform-origin:left center;
}

/* right/left specific */
.team-left .meter .glow{background:linear-gradient(90deg,var(--accent-left), rgba(59,209,255,0.12))}
.team-right .meter .glow{background:linear-gradient(90deg,var(--accent-right), rgba(255,123,123,0.12)); transform-origin:right; right:0; left:auto}

/* rope area */
.rope-area{
  display:flex;
  flex-direction:column;
  gap:10px;
  align-items:center;
  justify-content:center;
  padding:6px;
}
.rope-track{
  width:100%;
  height:120px;
  background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  border:1px solid rgba(255,255,255,0.03);
  overflow:hidden;
}

/* rope visuals */
.rope{
  width:78%;
  height:12px;
  background: repeating-linear-gradient(90deg, #cfae7a 0 8px, #8b6e4b 8px 16px);
  border-radius:8px;
  position:relative;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4), 0 0 40px rgba(0,0,0,0.15) inset;
}
.center-marker{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  width:26px;height:26px;border-radius:50%;
  background:linear-gradient(180deg,#fff,#e6eef8);
  box-shadow: 0 6px 18px rgba(2,6,23,0.5);
  border:3px solid rgba(0,0,0,0.14);
  z-index:4;
  transition:left .07s linear, transform .12s ease;
}

/* scoreboard */
.scoreboard{display:flex;gap:12px;margin-top:8px}
.score{padding:6px 12px;border-radius:8px;background:rgba(255,255,255,0.02);color:var(--muted);font-weight:700}

/* footer */
.game-footer{margin-top:12px;display:flex;flex-direction:column;gap:6px}
.hint{margin:0;color:var(--muted);font-size:13px}

/* marker glow when moving */
.marker-glow-left{box-shadow: var(--glow-left);}
.marker-glow-right{box-shadow: var(--glow-right);}

/* winners visual */
.win-left .rope{box-shadow: 0 0 60px rgba(59,209,255,0.18), 0 6px 30px rgba(6,23,37,0.7) inset}
.win-right .rope{box-shadow: 0 0 60px rgba(255,123,123,0.12), 0 6px 30px rgba(6,23,37,0.7) inset}
.win-banner{
  position:absolute;left:50%;top:14px;transform:translateX(-50%);padding:8px 16px;border-radius:999px;background:linear-gradient(90deg,var(--accent-left),var(--accent-right));font-weight:800;color:#061025;box-shadow:0 6px 24px rgba(0,0,0,0.55)
}

/* responsive */
@media (max-width:880px){
  .arena{grid-template-columns:1fr;grid-auto-rows:auto}
  .rope-track{height:90px}
  .game-shell{padding:14px}
}