/** Panel — typed region container with optional collapsible header. */

.panel {
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
  border-radius: 8px;
  background: var(--bg-primary, #fff);
  overflow: clip;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Card regions in bounded flex hosts (sidebar, PanelLayout pane): body fills and scrolls. */
.panel[data-variant="card"] .body:not(.bodyHidden) {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
}

/* --- Variant: table — fills available height, bounded scroll --- */
.panel[data-variant="table"] {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.panel[data-variant="table"] .body {
  flex: 1;
  min-height: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

/* --- Variant: dashboard — natural height, grid-friendly --- */
.panel[data-variant="dashboard"] .body {
  padding: 14px;
}

/* --- Variant: toolbar — compact, no border-radius, minimal chrome --- */
.panel[data-variant="toolbar"] {
  border-radius: 0;
  border-left: none;
  border-right: none;
}

.panel[data-variant="toolbar"] .body {
  padding: 8px 14px;
}

/* Toolbars are chrome (filter/action bars), not collapsible content regions.
   title/id are still required for identification + a11y, but no visible header
   bar is rendered to avoid duplicate headers above existing toolbar content. */
.panel[data-variant="toolbar"] .header {
  display: none;
}

/* --- Generic fill — any variant can grow to fill a bounded region --- */
.panel[data-fill="true"] {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.panel[data-fill="true"] .body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* --- Variant: editor — full height, no body padding --- */
.panel[data-variant="editor"] {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: visible;
}

.panel[data-variant="editor"] .body {
  flex: 1;
  min-height: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: visible;
}

/* --- Variant: wizard — step container --- */
.panel[data-variant="wizard"] .body {
  padding: 20px;
}

.header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-secondary, rgba(0, 0, 0, 0.02));
  border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
  min-height: 40px;
  position: relative;
}

.headerCollapsible {
  cursor: pointer;
  user-select: none;
  /* Reserve space so action icons never overlap the collapse chevron */
  padding-right: 30px;
}

.headerCollapsible:hover {
  background: var(--bg-hover, rgba(0, 0, 0, 0.04));
}

.titles {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #1a1a1a);
  line-height: 1.3;
}

.subtitle {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary, #666);
  line-height: 1.3;
}

.actions {
  flex-shrink: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

/* Collapse chevron: always rightmost, above action icons (never covered). */
.chevron {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 12px;
  color: var(--text-tertiary, #888);
  z-index: 2;
  pointer-events: none;
}

.body {
  padding: 14px;
}

.bodyHidden {
  display: none;
}

/* Dark theme */
:global(.dark-theme) .panel {
  border-color: var(--border-color, rgba(255, 255, 255, 0.1));
  background: var(--bg-primary, #1e1e1e);
}

:global(.dark-theme) .header {
  background: var(--bg-secondary, rgba(255, 255, 255, 0.03));
  border-bottom-color: var(--border-color, rgba(255, 255, 255, 0.06));
}

:global(.dark-theme) .headerCollapsible:hover {
  background: var(--bg-hover, rgba(255, 255, 255, 0.05));
}