#lru-fib {
  border: 1px solid var(--border, #2a2a2a);
  border-radius: 8px;
  padding: 16px;
  margin: 24px 0;
  background: var(--card, #18181b);
  font-family: var(--font-jetbrains-mono, ui-monospace, SFMono-Regular, monospace);
  font-size: 12px;
  color: var(--foreground, #e5e7eb);
}
#lru-fib .lf-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
#lru-fib .lf-title { font-size: 13px; }
#lru-fib .lf-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--font-space-grotesk, sans-serif);
  font-size: 12px;
  color: var(--muted-foreground, #9ca3af);
}
#lru-fib .lf-controls input[type="number"] {
  background: transparent;
  border: 1px solid var(--border, #2a2a2a);
  color: var(--foreground, #e5e7eb);
  font-family: inherit;
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 4px;
  width: 50px;
}
#lru-fib button {
  font-family: inherit;
  font-size: 11px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border, #2a2a2a);
  color: var(--muted-foreground, #9ca3af);
  border-radius: 4px;
  cursor: pointer;
}
#lru-fib button:hover:not(:disabled) {
  color: var(--foreground, #e5e7eb);
  border-color: var(--primary, #60a5fa);
}
#lru-fib button.lf-active {
  color: var(--foreground, #e5e7eb);
  border-color: var(--primary, #60a5fa);
  background: rgba(96, 165, 250, 0.08);
}
#lru-fib .lf-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--font-space-grotesk, sans-serif);
  color: var(--muted-foreground, #9ca3af);
  font-size: 12px;
  margin-bottom: 12px;
}
#lru-fib .lf-meta b {
  color: var(--foreground, #e5e7eb);
  font-weight: 600;
}
#lru-fib .lf-tree {
  display: block;
  width: 100%;
  height: 280px;
  background: rgba(255, 255, 255, 0.015);
  border-radius: 4px;
}
#lru-fib .lf-legend {
  display: flex;
  gap: 14px;
  font-size: 11px;
  color: var(--muted-foreground, #9ca3af);
  margin-top: 10px;
  font-family: var(--font-space-grotesk, sans-serif);
}
#lru-fib .lf-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 6px;
}