/* ── Pi Extensions Manager ──────────────────────────────────── */

.pi-ext-manager {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.pi-ext-manager-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.pi-ext-manager-title {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.pi-ext-manager-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.pi-ext-description {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

.pi-ext-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pi-ext-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.pi-ext-item:hover {
  border-color: var(--text-dim);
}

.pi-ext-item-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: 0;
  flex: 1;
}

.pi-ext-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.pi-ext-name {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pi-ext-source-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: color-mix(in srgb, currentColor 12%, transparent);
}

.pi-ext-source-badge--global {
  color: var(--color-info);
}

.pi-ext-source-badge--project {
  color: var(--color-success);
}

.pi-ext-path {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  word-break: break-all;
  line-height: 1.4;
}

.pi-ext-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

/* Pi Extensions Manager empty and loading states */
.pi-ext-manager .empty-state,
.pi-ext-manager .loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-2xl);
  text-align: center;
  color: var(--text-muted);
}

/* Pi Extensions Manager package UI — base styles */
.pi-ext-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pi-ext-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.pi-ext-add-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.pi-ext-add-form-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.pi-ext-add-form-row .input {
  flex: 1;
  min-width: 0;
}

.pi-ext-package-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pi-ext-package-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.pi-ext-package-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: calc(var(--space-sm) + 2px) var(--space-md);
  flex-wrap: wrap;
}

.pi-ext-expand-btn {
  background: none;
  border: none;
  padding: var(--space-xs);
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.pi-ext-expand-btn:hover {
  color: var(--text);
}

.pi-ext-expand-btn:focus-visible {
  box-shadow: var(--focus-ring-strong);
  outline: none;
}

.pi-ext-expand-placeholder {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.pi-ext-source-badge--npm {
  color: var(--color-info);
  background: color-mix(in srgb, var(--color-info) 12%, transparent);
}

.pi-ext-source-badge--git {
  color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
}

.pi-ext-source-badge--local {
  color: var(--text-muted);
  background: color-mix(in srgb, var(--text-muted) 12%, transparent);
}

.pi-ext-package-source {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  flex: 1;
  min-width: 0;
  word-break: break-all;
}

.pi-ext-filter-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.pi-ext-package-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.pi-ext-remove-btn {
  background: none;
  border: none;
  padding: var(--space-xs);
  min-width: var(--space-2xl);
  min-height: var(--space-2xl);
  cursor: pointer;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.pi-ext-remove-btn:hover {
  color: var(--color-error);
  background: color-mix(in srgb, var(--color-error) 10%, transparent);
}

.pi-ext-remove-btn:focus-visible {
  box-shadow: var(--focus-ring-strong);
  outline: none;
}

.pi-ext-filter-list {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pi-ext-filter-section {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  color: var(--text-muted);
}

.pi-ext-filter-label {
  font-size: 0.72rem;
  font-weight: 500;
}

.pi-ext-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.pi-ext-top-level {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.pi-ext-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pi-ext-section-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.pi-ext-section-header span:first-of-type {
  font-weight: 500;
}

.pi-ext-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 var(--space-xs);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  color: var(--text-dim);
}

.pi-ext-resource-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.pi-ext-resource-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.pi-ext-resource-path {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pi-ext-resource-remove {
  background: none;
  border: none;
  padding: var(--space-xs);
  min-width: var(--space-2xl);
  min-height: var(--space-2xl);
  cursor: pointer;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.pi-ext-resource-remove:hover {
  color: var(--color-error);
  background: color-mix(in srgb, var(--color-error) 10%, transparent);
}

.pi-ext-resource-remove:focus-visible {
  box-shadow: var(--focus-ring-strong);
  outline: none;
}

/* Mobile responsive overrides */
@media (max-width: 768px) {
  /* Pi Extensions list items - mobile adjustments */
  .pi-ext-list {
    gap: var(--space-xs);
  }

  .pi-ext-item {
    padding: var(--space-sm);
  }

  /* Pi Extensions Manager - mobile-specific layout */
  .pi-ext-add-form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .pi-ext-add-form-row .btn,
  .pi-ext-add-form-row .btn-primary {
    width: 100%;
  }

  .pi-ext-package-header {
    padding: var(--space-sm) var(--space-md);
  }

  .pi-ext-resource-path {
    max-width: 120px;
  }
}

/* Discovered Extensions Section */
.pi-ext-discovered-section {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.pi-ext-discovered-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.pi-ext-discovered-header h4 {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Pi Extensions source badge variants */
.pi-ext-source-badge--fusion-global {
  color: var(--color-info);
  background: color-mix(in srgb, var(--color-info) 12%, transparent);
}

.pi-ext-source-badge--pi-global {
  color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 12%, transparent);
}

.pi-ext-source-badge--fusion-project {
  color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
}

.pi-ext-source-badge--pi-project {
  color: var(--color-muted);
  background: color-mix(in srgb, var(--color-muted) 12%, transparent);
}

.pi-ext-source-badge--package {
  color: var(--in-progress);
  background: color-mix(in srgb, var(--in-progress) 12%, transparent);
}