.tool-header .breadcrumb {
  margin-bottom: 0.85rem;
}

.tool-directory-section {
  padding: 1.75rem 0 4.5rem;
}

.tool-directory {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
}

.tool-group {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.tool-group-label {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.tool-group-label::after {
  content: '';
  flex: 1 1 auto;
  height: 1px;
  background: var(--border-subtle);
}

.tool-group-count {
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.tool-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border-subtle);
}

.tool-entry {
  border-bottom: 1px solid var(--border-subtle);
}

.tool-row {
  display: grid;
  grid-template-columns: auto 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 0 1rem;
  margin-inline: -0.75rem;
  padding: 0.85rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.tool-row:hover {
  background: var(--surface-interactive);
  color: var(--color-text-primary);
}

.tool-row:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.tool-ordinal {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.tool-plate {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.tool-row:hover .tool-plate {
  border-color: var(--color-border-light);
  background: var(--color-accent-blue-dim);
  color: var(--color-accent-blue);
}

.tool-copy {
  min-width: 0;
}

.tool-name {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.35;
}

.tool-summary {
  margin: 0.15rem 0 0;
  overflow: hidden;
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0.45rem 0 0;
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--color-text-muted);
  font-size: 0.71rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.tool-chip.is-lead {
  border-color: transparent;
  background: var(--color-accent-blue-dim);
  color: var(--color-accent-blue);
}

.tool-open {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.tool-open i {
  font-size: 0.72rem;
  transition: transform var(--transition-fast);
}

.tool-row:hover .tool-open {
  color: var(--color-accent-blue);
}

.tool-row:hover .tool-open i {
  transform: translateX(3px);
}

@media (max-width: 860px) {
  .tool-directory {
    max-width: none;
  }

  .tool-summary {
    white-space: normal;
  }

  .tool-open-label {
    display: none;
  }
}

@media (max-width: 640px) {
  .tool-row {
    grid-template-columns: 32px minmax(0, 1fr) auto;
    align-items: start;
    gap: 0 0.75rem;
    margin-inline: -0.6rem;
    padding: 0.8rem 0.6rem;
  }

  .tool-ordinal {
    display: none;
  }

  .tool-plate {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .tool-open {
    padding-top: 0.25rem;
  }

  .tool-directory-section {
    padding-bottom: 3.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {

  .tool-row,
  .tool-plate,
  .tool-open i {
    transition: none;
  }

  .tool-row:hover .tool-open i {
    transform: none;
  }
}