Polish dataset catalog role density

frontend/src/styles/app.css

@@ -946,6 +946,61 @@ section th {
   background: #ffffff;
 }
 
+.dataset-role-summary-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
+  gap: 0.55rem;
+  margin-top: 0.75rem;
+}
+
+.dataset-role-summary {
+  display: grid;
+  gap: 0.12rem;
+  min-width: 0;
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  padding: 0.65rem;
+  background: #ffffff;
+}
+
+.dataset-role-summary span,
+.dataset-role-summary small {
+  color: var(--muted);
+  font-size: 0.76rem;
+  font-weight: 800;
+  text-transform: uppercase;
+}
+
+.dataset-role-summary strong {
+  color: var(--ink);
+  font-size: 1.18rem;
+  line-height: 1;
+}
+
+.dataset-role-selected {
+  border-color: rgba(15, 23, 42, 0.24);
+  background: #f1f5f9;
+  color: #0f172a;
+}
+
+.dataset-role-reference {
+  border-color: rgba(15, 118, 110, 0.28);
+  background: #ecfdf5;
+  color: #115e59;
+}
+
+.dataset-role-candidate {
+  border-color: rgba(37, 99, 235, 0.24);
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
+.dataset-role-source {
+  border-color: rgba(100, 116, 139, 0.22);
+  background: #f8fafc;
+  color: #334155;
+}
+
 .entity-list,
 .dataset-list,
 .model-list,
@@ -1037,6 +1092,36 @@ button.entity-card {
   align-items: start;
 }
 
+.dataset-card-kicker {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+  align-items: center;
+  margin-bottom: 0.28rem;
+  color: var(--muted);
+  font-size: 0.75rem;
+  font-weight: 800;
+  text-transform: uppercase;
+}
+
+.dataset-role-badge {
+  display: inline-flex;
+  align-items: center;
+  max-width: 100%;
+  min-height: 1.45rem;
+  border: 1px solid currentColor;
+  border-radius: 999px;
+  padding: 0.16rem 0.5rem;
+  font-size: 0.72rem;
+  line-height: 1;
+}
+
+.dataset-card-title {
+  display: block;
+  overflow-wrap: anywhere;
+  line-height: 1.25;
+}
+
 .model-card p {
   grid-column: 1 / -1;
   margin: 0.25rem 0 0;