/* ---------- Components panel ---------- */
/* Edge-to-edge panels inside the stage grid */
.stage > .panel { border-radius: 0; border: none; border-right: 1px solid var(--bd-1); }
.stage > .panel:last-child { border-right: none; border-left: 1px solid var(--bd-1); }

.panel {
  background: var(--bg-surface);
  border: 1px solid var(--bd-1);
  border-radius: var(--radius-card);
  padding: 18px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex; flex-direction: column; gap: 16px;
  min-height: 0;
  min-width: 0;
}
.panel-title {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--fg-muted);
  /* Bleed to panel edges (panel has padding: 18px) */
  margin: -18px -18px 0;
  padding: 10px 14px 8px;
  border-bottom: 1px solid var(--bd-1);
  flex-shrink: 0;
}
.panel-title .count {
  font-size: 11px; font-weight: 600;
  color: var(--fg-muted);
  background: var(--bg-subtle);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}

.section-label {
  font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 8px;
}

.sb-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.sb-item {
  display: flex; flex-direction: column;
  align-items: stretch;
  gap: 6px;
  padding: 8px 8px 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--bd-2);
  border-radius: var(--radius-md);
  cursor: grab;
  user-select: none;
  transition: border-color 150ms, box-shadow 150ms, background 150ms, transform 120ms;
}
.sb-item:hover {
  border-color: var(--bd-strong);
  background: var(--bg-surface-2);
  box-shadow: var(--shadow-1);
  transform: translateY(-1px);
}
.sb-item:active { cursor: grabbing; transform: translateY(0); }

.sb-preview {
  position: relative;
  align-self: center;
  background: var(--bg-canvas);
  border-radius: var(--radius-sm);
  width: 100%;
  display: flex; align-items: center; justify-content: center;
}
.sb-preview .el { cursor: inherit; }
.sb-caption {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--fg-muted);
  text-align: center;
  text-transform: uppercase;
}

.sb-tip {
  font-size: 11.5px; line-height: 1.55; color: var(--fg-muted);
  padding: 10px 12px;
  background: var(--bg-subtle);
  border: 1px dashed var(--bd-1);
  border-radius: var(--radius-md);
}
.sb-tip b { color: var(--fg-strong); font-weight: 700; }

.sb-version {
  position: sticky;
  bottom: 0;
  margin-top: auto;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2px;
  color: var(--fg-muted);
  opacity: 0.7;
  background: var(--bg-surface);
}

/* ---------- Sidebar split layout ---------- */

.panel--sidebar {
  padding: 0;
  overflow: hidden;
  gap: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.sidebar-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 8px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--bd-1);
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.sidebar-section-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-divider {
  height: 5px;
  flex-shrink: 0;
  cursor: row-resize;
  background: var(--bd-1);
  transition: background 120ms;
  position: relative;
}
.sidebar-divider::after {
  content: '';
  position: absolute;
  inset: -4px 0;
}
.sidebar-divider:hover,
.sidebar-divider.dragging {
  background: var(--accent-1);
}

/* ---------- Layers list ---------- */

.layers-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.layer-group {
  display: flex;
  flex-direction: column;
}
.layer-group--dragging {
  opacity: 0.38;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: background 100ms;
  min-width: 0;
}
.layer-item:hover {
  background: var(--bg-subtle);
}
.layer-item.selected {
  background: color-mix(in srgb, var(--accent-1) 12%, transparent);
  color: var(--accent-1);
}
.layer-item.selected .layer-type-icon,
.layer-item.selected .layer-item-name {
  color: var(--accent-1);
}

.layer-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  flex-shrink: 0;
  color: transparent;
  transition: transform 120ms, color 100ms;
}
.layer-chevron.visible {
  color: var(--fg-muted);
  cursor: pointer;
}
.layer-chevron.visible:hover {
  color: var(--fg-default);
}
.layer-chevron.open {
  transform: rotate(90deg);
}

.layer-drag-handle {
  display: none;
  color: var(--fg-muted);
  flex-shrink: 0;
  cursor: grab;
}
.layer-item:hover .layer-drag-handle {
  display: inline-flex;
}

.layer-type-icon {
  display: inline-flex;
  align-items: center;
  color: var(--fg-muted);
  flex-shrink: 0;
}

.layer-item-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-default);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

/* Eye / lock action buttons on each layer row */
.layer-item-actions {
  display: flex;
  align-items: center;
  gap: 1px;
  flex-shrink: 0;
  margin-left: auto;
  opacity: 0;
  transition: opacity 100ms;
}
.layer-item:hover .layer-item-actions,
.layer-item.selected .layer-item-actions {
  opacity: 1;
}
/* Always show actions when they're in "active" state (hidden or locked) */
.layer-vis-btn.active,
.layer-lock-btn.active {
  opacity: 1 !important;
}
/* Ensure the parent actions container shows for active states */
.layer-item:has(.layer-vis-btn.active) .layer-item-actions,
.layer-item:has(.layer-lock-btn.active) .layer-item-actions {
  opacity: 1;
}

.layer-vis-btn,
.layer-lock-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: none;
  background: transparent;
  border-radius: 3px;
  cursor: pointer;
  color: var(--fg-muted);
  padding: 0;
  flex-shrink: 0;
}
.layer-vis-btn:hover,
.layer-lock-btn:hover {
  background: var(--bg-subtle);
  color: var(--fg-default);
}
.layer-vis-btn.active {
  color: var(--fg-default);
}
.layer-lock-btn.active {
  color: var(--accent-1);
}

/* Muted appearance for hidden layers */
.layer-item--hidden .layer-type-icon,
.layer-item--hidden .layer-item-name {
  opacity: 0.4;
}

/* Subtle indicator for locked layers */
.layer-item--locked .layer-item-name {
  color: var(--fg-muted);
}

.layer-item-edit {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  color: var(--fg-strong);
  background: var(--bg-surface);
  border: 1px solid var(--accent-1);
  border-radius: 3px;
  padding: 0 4px;
  height: 20px;
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-1) 20%, transparent);
}

.layer-group-children {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--bd-2);
  margin-left: 14px;
}

.layer-drop-line {
  height: 2px;
  border-radius: 1px;
  background: var(--accent-1);
  margin: 1px 4px;
}

/* Nested connector rows */
.layer-conn-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 2px 6px 2px 24px;
  min-width: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 100ms;
}
.layer-conn-item:hover {
  background: var(--bg-subtle);
}
.layer-conn-item.selected {
  background: color-mix(in srgb, var(--accent-1) 12%, transparent);
}
.layer-conn-item.selected .layer-conn-icon,
.layer-conn-item.selected .layer-conn-name {
  color: var(--accent-1);
}

.layer-conn-tree {
  display: inline-flex;
  width: 8px;
  height: 14px;
  border-left: 1px solid var(--bd-2);
  border-bottom: 1px solid var(--bd-2);
  border-radius: 0 0 0 3px;
  flex-shrink: 0;
}

.layer-conn-icon {
  display: inline-flex;
  align-items: center;
  color: var(--fg-muted);
  flex-shrink: 0;
}

.layer-conn-name {
  font-size: 11px;
  color: var(--fg-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layers-empty {
  font-size: 11.5px;
  color: var(--fg-muted);
  line-height: 1.55;
  padding: 8px 4px;
  text-align: center;
}

/* Dark mode — sidebar preview text must be readable on dark background */
[data-theme="dark"] .sb-preview .lbl,
[data-theme="dark"] .sb-preview .el-text .el-body { color: rgba(255,255,255,0.90) !important; }
[data-theme="dark"] .sb-preview .meta { color: rgba(255,255,255,0.50) !important; }

/* ---------- Export section ---------- */
.export-fmt {
  display: flex;
  margin-bottom: 8px;
}
.export-fmt .rail-theme {
  flex: 1;
  background: var(--bg-subtle);
}
.toggle-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 0; font-size: 12px; color: var(--fg-default);
  cursor: pointer; user-select: none; gap: 8px; margin-bottom: 6px;
}
.toggle-row input[type="checkbox"] {
  width: 16px; height: 16px; cursor: pointer;
  accent-color: var(--accent-1);
  flex-shrink: 0;
}

/* ---------- Library tab bar ---------- */

.lib-tabs {
  display: flex;
  flex-shrink: 0;
  border-bottom: 1px solid var(--bd-1);
  padding: 6px 8px;
  gap: 8px;
}

.lib-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
  margin-bottom: -7px;
  padding-bottom: 13px;
  white-space: nowrap;
}

.lib-tab:hover {
  color: var(--fg-default);
}

.lib-tab--active {
  color: var(--fg-strong);
  border-bottom-color: var(--accent-1);
}

/* ---------- Charts empty state ---------- */

.lib-charts-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 40px 16px;
  color: var(--fg-muted);
  text-align: center;
  flex: 1;
}

.lib-charts-empty svg {
  opacity: 0.5;
}

.lib-charts-empty-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--fg-default);
  letter-spacing: 0.2px;
}

.lib-charts-empty-desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--fg-muted);
}

.lib-charts-empty-list {
  font-size: 11px;
  color: var(--fg-muted);
  line-height: 1.8;
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  opacity: 0.7;
}