@layer panel {
  .panel {
    width: var(--panel-width);
    height: 100%;
    flex-shrink: 0;
    overflow-y: auto;
    background: var(--color-surface);
    border-radius: var(--panel-radius);
    container-type: inline-size;
    container-name: panel;
    anchor-name: --panel;
  }

  .panel[data-state="loading"] .panel-content { opacity: 0; }
  .panel[data-state="ready"]   .panel-content { opacity: 1; }

  .panel-content { padding: var(--space-md); }

  .panel-backlinks {
    border-top: 1px solid var(--color-border);
    padding: var(--space-md);
    margin-top: var(--space-xl);
    font-size: var(--text-sm);
  }

  .backlinks-label {
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
  }
}