.tree-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

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

.tree-panel .head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 4px;
}
.tree-panel .name {
  font-weight: 700; color: var(--title); font-size: 14px;
}
.tree-panel .stats {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px; color: var(--text);
  margin-top: 1px;
}
.tree-panel .stats .label   { color: var(--muted); margin-right: 4px; }
.tree-panel .stats .pathol  { color: var(--accent); font-weight: 700; }
.tree-panel .stats .balanced{ color: var(--title); }
.tree-panel .stats .sep     { color: var(--light); margin: 0 6px; }

.tree-panel canvas {
  width: 100%;
  height: 240px;
  display: block;
  background: var(--bg-soft);
  border-radius: 4px;
  margin-top: 6px;
}

.seq-input {
  flex: 1;
  min-width: 220px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: ui-monospace, Menlo, Monaco, monospace;
  background: var(--bg);
  border: 1px solid var(--light);
  border-radius: 4px;
  color: var(--text);
}
.seq-input:focus {
  outline: none;
  border-color: var(--title);
}

.preset-buttons {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.preset-buttons button {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--light);
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
}
.preset-buttons button:hover {
  background: var(--bg-soft);
  border-color: var(--title);
  color: var(--title);
}

.controls .progress {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
  min-width: 80px;
}