/* ============================================
   Page Panels — surface containers with shadow
   ============================================ */

.page-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-island);
  width: 100%;
}

.page-panel--wide {
  max-width: 900px;
  max-height: calc(100vh - var(--space-xxl) * 2);
  overflow: auto;
}

.page-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-gray-20);
}

.page-panel-header h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
}

.page-panel-header .subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0;
}

.page-panel-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.page-panel-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-20);
}