.building-reference-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.building-reference-item { position: relative; width: 88px; }
.building-reference-thumb { position: relative; display: block; width: 88px; height: 72px; padding: 0; cursor: pointer; overflow: hidden; }
.building-reference-thumb[aria-pressed="true"] { outline: 2px solid var(--theme-selected-border, #83c262); outline-offset: 2px; }
.building-reference-thumb img { width: 100%; height: 100%; object-fit: cover; }
.building-reference-number { position: absolute; bottom: 0; left: 0; min-width: 24px; padding: 2px 5px; border: 2px solid var(--theme-edge); background: var(--theme-inset-background); color: var(--theme-ink); font-size: 12px; font-weight: 700; }
.building-reference-remove { position: absolute; top: 0; right: 0; width: 25px; height: 25px; padding: 0; font-size: 19px; line-height: 1; cursor: pointer; }
.building-reference-help { margin: 10px 0 0; color: var(--theme-muted-ink); font-size: 13px; line-height: 1.7; }