:root {
  --panel-bg: var(--surface-base);
  --panel-head-bg: var(--new-bg-panel-head, var(--surface-base));
  --panel-border: var(--border-main);
  --panel-head-px: var(--space-3);
  --panel-head-gap: var(--space-3);
  --panel-title-size: var(--font-size-main);
  --panel-title-weight: var(--font-weight-strong);
  --panel-subtitle-size: var(--font-size-sub);
  --panel-subtitle-color: var(--text-subtle);
}

.panel {
  border: none;
  border-radius: var(--radius-md);
  background: var(--panel-bg);
  box-shadow: var(--panel-shadow, 0 1px 2px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04));
  display: grid;
  grid-template-rows: var(--panel-head-height) minmax(0, 1fr);
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.panel-head {
  min-height: var(--panel-head-height);
  height: var(--panel-head-height);
  padding: 0 var(--panel-head-px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: var(--panel-head-bg);
  display: flex;
  align-items: center;
  flex-shrink: 0;
  scrollbar-gutter: stable;
}

.panel-head-default,
.panel-head-list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--panel-head-gap);
  white-space: nowrap;
}

.panel-head--meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--panel-head-gap);
}

.panel-head-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.panel-head-title {
  min-width: 0;
  font-size: var(--panel-title-size);
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.2;
}

.panel-head-subtitle {
  min-width: 0;
  font-size: var(--panel-subtitle-size);
  color: var(--panel-subtitle-color);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-head-subtitle[hidden] {
  display: none;
}

.panel-head-meta {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.panel-head-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--btn-inline-gap);
  flex-wrap: nowrap;
  min-width: 0;
}

.panel-head-actions--compact {
  gap: var(--space-2);
  flex-wrap: nowrap;
}

.panel-head-actions:empty {
  display: none;
}

.panel-body {
  padding: var(--panel-body-pad);
  overflow: auto;
  min-height: 0;
  min-width: 0;
  scrollbar-gutter: auto;
}

.panel-body.no-pad,
.panel-body--flush {
  padding: 0;
}

.panel-body--form,
.panel-body--detail,
.panel-body--filter,
.panel-body-filter {
  padding: var(--panel-body-pad);
  display: flex;
  flex-direction: column;
  flex: 1 1 0;
  min-height: 0;
  overflow: auto;
  scrollbar-gutter: stable;
}

.panel-body--chat {
  padding: 0;
}

.panel--list,
.panel--product-list,
.panel--detail,
.panel--chat,
.panel--form,
.panel--filter {
  min-height: 0;
}

.panel--list .panel-body,
.panel--product-list .panel-body {
  padding: 0;
}

.panel--chat {
  grid-template-rows: var(--panel-head-height) minmax(0, 1fr);
}

.panel-head-type {
  display: none;
}

.detail-actions-hidden {
  display: none !important;
}