/* ---- catalog library / file import ---- */
.source-grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(260px,1fr)); gap:12px; }
.source-card{ border:1px solid var(--line); border-radius:10px; padding:12px; background:var(--panel); }
.source-card h3{ margin:0 0 2px; font-size:15px; }
.source-card p{ margin:0 0 10px; font-size:11.5px; color:var(--muted); line-height:1.4; }
.source-card .btn{ width:100%; }
.source-progress{ margin-top:8px; display:none; }
.source-progress.active{ display:block; }

.catalog-page-head{ display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.catalog-settings-link{ font-size:12px; }

/* ---- catalog property-distribution popup: smoothed density curve ---- */
.dist-chart{ height:180px; padding:8px; background:var(--panel); border:1px solid var(--line); border-radius:8px; }
.scaffold-structure-expand{ padding:8px 10px 10px; margin:0 0 4px; background:var(--panel); border-radius:8px; }
.scaffold-structure-preview{ width:150px; height:110px; background:var(--bg); border:1px solid var(--line); border-radius:6px; padding:4px; }
.scaffold-structure-preview svg{ width:100%; height:100%; }
.dist-bin-expand{ padding:8px 10px 10px; margin-top:6px; background:var(--panel); border-radius:8px; border:1px solid var(--line); }
.dist-bin-expand .scaffold-structure-preview{ width:70px; height:60px; display:inline-block; }