update

fusion_schedule/static/src/css/portal_schedule.css

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+/* Fusion Schedule - Portal responsive styles */
+
+/* Collapse chevron rotation */
+[data-bs-toggle="collapse"][aria-expanded="true"] .fa-chevron-down {
+    transform: rotate(180deg);
+}
+
+/* Min-width utility for text truncation */
+.min-width-0 {
+    min-width: 0;
+}
+
+/* Mobile-friendly button sizing */
+@media (max-width: 575.98px) {
+    .js-reschedule-event,
+    .js-cancel-event {
+        padding: 4px 8px;
+        font-size: 12px;
+    }
+
+    .card-header h5,
+    .card-header h6 {
+        font-size: 15px;
+    }
+
+    .table th,
+    .table td {
+        font-size: 13px;
+        padding: 0.5rem 0.4rem;
+    }
+}
+
+/* Slot buttons responsive grid */
+@media (max-width: 575.98px) {
+    #slotsGrid .btn,
+    #rescheduleSlotsGrid .btn,
+    #publicSlotsGrid .btn,
+    #publicRescheduleSlotsGrid .btn {
+        min-width: 80px !important;
+        padding: 6px 10px !important;
+        font-size: 13px;
+    }
+}
+
+/* Modal responsive */
+@media (max-width: 575.98px) {
+    .modal-dialog {
+        margin: 0.5rem;
+    }
+}
+
+/* Connected calendar compact badges */
+.badge i.fa-google,
+.badge i.fa-windows {
+    vertical-align: middle;
+}