:root {
  --fttb-surface: #ffffff;
  --fttb-surface-subtle: #f8fafc;
  --fttb-border: #e2e8f0;
  --fttb-border-strong: #cbd5e1;
  --fttb-text: #0f172a;
  --fttb-text-muted: #64748b;
  --fttb-brand: var(--tf-accent);
  --fttb-brand-hover: var(--tf-accent-hover);
  --fttb-card-node: #ffffff;
  --fttb-node-border: var(--tf-accent-soft);
  --fttb-node-accent: #faf2ee;
  --fttb-danger: #dc2626;
  --shadow: none;
}

.fttb-main {
  box-sizing: border-box;
  max-width: 46rem;
  margin-inline: auto;
  padding: 1.5rem 1rem 3rem;
}

.fttb-wrap {
  box-sizing: border-box;
  padding-inline: 1.5rem;
  margin-inline: auto;
  max-width: 46rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.fttb-panel {
  background: var(--fttb-surface);
  border: 1px solid var(--fttb-border);
  border-radius: 2px;
  padding: 1.5rem;
  box-shadow: none;
}

.fttb-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.fttb-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.fttb-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fttb-text);
}

.fttb-field input, .fttb-field select {
  border: 1px solid var(--fttb-border-strong);
  border-radius: 2px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  color: var(--fttb-text);
  background: var(--fttb-surface);
  outline: none;
}

.fttb-control-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--fttb-border);
}

.fttb-view-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fttb-view-toggle label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fttb-text);
}

.fttb-view-toggle select {
  border: 1px solid var(--fttb-border-strong);
  border-radius: 2px;
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
  background: var(--fttb-surface);
  color: var(--fttb-text);
}

.fttb-action-buttons {
  display: flex;
  gap: 0.75rem;
}

.fttb-btn {
  background: var(--fttb-brand);
  color: #ffffff;
  border: none;
  border-radius: 2px;
  padding: 0.6rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

.fttb-btn:hover {
  background: var(--fttb-brand-hover);
}

.fttb-secondary-btn {
  background: var(--fttb-surface);
  border: 1px solid var(--fttb-border-strong);
  border-radius: 2px;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fttb-text);
  cursor: pointer;
  transition: background 0.15s;
}

.fttb-secondary-btn:hover {
  background: var(--fttb-surface-subtle);
}

.fttb-canvas-container {
  box-sizing: border-box;
  padding-inline: 1.5rem;
  margin-inline: auto;
  max-width: 46rem;
  background: var(--fttb-surface);
  border: 1px solid var(--fttb-border);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: none;
}

.fttb-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 1rem;
  background: var(--fttb-surface-subtle);
  border-bottom: 1px solid var(--fttb-border);
  min-height: 44px;
}

.fttb-selected-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.fttb-selected-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fttb-text);
}

.fttb-canvas-actions {
  display: flex;
  gap: 0.5rem;
}

.fttb-small-btn {
  background: var(--fttb-surface);
  border: 1px solid var(--fttb-border-strong);
  border-radius: 2px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--fttb-text);
  cursor: pointer;
}

.fttb-small-btn:hover {
  background: var(--fttb-surface-subtle);
}

.fttb-danger-btn {
  color: var(--fttb-danger);
  border-color: var(--fttb-danger);
}

.fttb-danger-btn:hover {
  background: #fef2f2;
}

.fttb-svg-wrap {
  box-sizing: border-box;
  margin-inline: auto;
  max-width: 46rem;
  width: 100%;
  overflow-x: auto;
  display: flex;
  justify-content: center;
  background: #fafafa;
  padding: 1rem 1.5rem;
}

#fttbSvg {
  display: block;
  user-select: none;
}

.fttb-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.fttb-stat-card {
  background: var(--fttb-surface);
  border: 1px solid var(--fttb-border);
  border-radius: 2px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  box-shadow: none;
}

.fttb-stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fttb-text-muted);
}

.fttb-stat-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--fttb-text);
}
.fttb-save-badge {
  font-size: 0.75rem;
  color: #16a34a;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 4px;
  padding: 0.35rem 0.6rem;
  display: inline-flex;
  align-items: center;
  align-self: center;
  font-weight: 500;
}

.fttb-import-label {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

.fttb-active-card {
  stroke: var(--fttb-brand) !important;
  stroke-width: 2.5px !important;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
}

.fttb-node-tools {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
}

.fttb-card-group {
  transition: transform 0.15s ease;
}

.fttb-card-group:hover {
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.12));
}

.fttb-quick-btn {
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.15s, transform 0.15s;
}

.fttb-quick-btn:hover {
  opacity: 1;
  transform: scale(1.15);
}

.fttb-danger-btn {
  color: #dc2626 !important;
  border-color: #fca5a5 !important;
  background-color: #fef2f2 !important;
}

.fttb-danger-btn:hover {
  background-color: #fee2e2 !important;
}
/* tf:dark-palette — generated by migrate_chrome.py */
/* Neutrals inherit the shared chrome tokens so all tools share one
   ground; brand hues are kept and lightened, never inverted. */
[data-theme="dark"] {
  --fttb-surface: var(--tf-surface);
  --fttb-surface-subtle: var(--tf-surface);
  --fttb-border: var(--tf-surface);
  --fttb-border-strong: #98abc3;
  --fttb-text: var(--tf-ink);
  --fttb-text-muted: var(--tf-ink-faint);
  --fttb-card-node: var(--tf-surface);
  --fttb-node-accent: var(--tf-surface);
  --fttb-danger: #da8181;
}