style: enhance layout and styling of schedule summary items and summary bar

frontend/src/components/schedule/ScheduleLayoutShell.vue

@@ -299,7 +299,12 @@ export default {
 }
 
 .schedule-summary-item {
-    min-width: 120px;
+    flex: 1 1 0;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 0.1rem;
+    padding: 0.2rem 0.35rem;
 }
 
 .schedule-summary-label,
@@ -308,6 +313,10 @@ export default {
     color: var(--text-muted);
 }
 
+.schedule-summary-item strong {
+    line-height: 1.2;
+}
+
 .schedule-layout {
     display: flex;
     gap: 1rem;
@@ -520,8 +529,7 @@ export default {
     }
 
     .schedule-summary-item {
-        flex: 1 1 100%;
-        min-width: 0;
+        flex: 1 1 calc(50% - 0.5rem);
     }
 
     .tab-navigation {
@@ -536,4 +544,15 @@ export default {
         white-space: nowrap;
     }
 }
+
+@media (min-width: 641px) {
+    .schedule-summary-bar {
+        display: grid;
+        grid-template-columns: repeat(5, minmax(0, 1fr));
+        gap: 0.4rem 0.75rem;
+        align-items: start;
+        padding-top: 0.65rem;
+        padding-bottom: 0.65rem;
+    }
+}
 </style>