.gp-board {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
}
@media (max-width: 720px) {
  .gp-board { grid-template-columns: 1fr; }
}

.gp-panel {
  background: var(--bg);
  border: 1px solid var(--grid);
  border-radius: 8px;
  padding: 10px 12px 12px 12px;
  display: flex;
  flex-direction: column;
}
.gp-panel.dim {
  opacity: 0.35;
  filter: saturate(0.4);
}

.gp-panel .head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 4px;
}
.gp-panel .name {
  font-weight: 700; color: var(--title); font-size: 14px;
}
.gp-panel .complexity {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px; color: var(--muted);
}
.gp-panel .result {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px; color: var(--text);
  margin-top: 1px;
  min-height: 14px;
}
.gp-panel .result .label  { color: var(--muted); margin-right: 4px; }
.gp-panel .result .ok     { color: var(--title); }
.gp-panel .result .fail   { color: var(--accent); font-weight: 700; }

.gp-panel canvas {
  width: 100%;
  height: 280px;
  display: block;
  background: var(--bg-soft);
  border-radius: 4px;
  margin-top: 6px;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.gp-panel canvas.dragging-edge { cursor: alias; }

.gp-help {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.6;
}
.gp-help kbd {
  background: var(--bg);
  border: 1px solid var(--light);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 11px;
  color: var(--text);
  font-family: ui-monospace, Menlo, Monaco, monospace;
}