diff --git a/core/templates/core/_report_config_modal.html b/core/templates/core/_report_config_modal.html
index 177ddd7..ec653e1 100644
--- a/core/templates/core/_report_config_modal.html
+++ b/core/templates/core/_report_config_modal.html
@@ -61,20 +61,18 @@
                         <!-- Project Filter (optional) -->
                         <div class="col-12">
                             <label class="form-label fw-semibold">Project <span class="text-muted fw-normal">(optional)</span></label>
-                            <select name="project" class="form-select">
-                                <option value="">All Projects</option>
+                            <select name="project" class="form-select report-multi" multiple data-placeholder="All projects (leave empty for all)">
                                 {% for p in projects %}
-                                <option value="{{ p.id }}">{{ p.name }}</option>
+                                <option value="{{ p.id }}"{% if p.id|stringformat:"s" in selected_project_ids %} selected{% endif %}>{{ p.name }}</option>
                                 {% endfor %}
                             </select>
                         </div>
                         <!-- Team Filter (optional) -->
                         <div class="col-12">
                             <label class="form-label fw-semibold">Team <span class="text-muted fw-normal">(optional)</span></label>
-                            <select name="team" class="form-select">
-                                <option value="">All Teams</option>
+                            <select name="team" class="form-select report-multi" multiple data-placeholder="All teams (leave empty for all)">
                                 {% for t in teams %}
-                                <option value="{{ t.id }}">{{ t.name }}</option>
+                                <option value="{{ t.id }}"{% if t.id|stringformat:"s" in selected_team_ids %} selected{% endif %}>{{ t.name }}</option>
                                 {% endfor %}
                             </select>
                         </div>
@@ -132,3 +130,25 @@
     if (modeCustom) modeCustom.addEventListener('change', toggleMode);
 })();
 </script>
+
+{# === CHOICES.JS — multi-select enhancement (admin-only) === #}
+{# Loaded CDN-only; falls back to native <select multiple> if the CDN fails. #}
+{% if user.is_staff or user.is_superuser %}
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/choices.js@10.2.0/public/assets/styles/choices.min.css">
+<script src="https://cdn.jsdelivr.net/npm/choices.js@10.2.0/public/assets/scripts/choices.min.js" defer></script>
+<script>
+(function() {
+    document.addEventListener('DOMContentLoaded', function() {
+        if (typeof Choices === 'undefined') return;  // graceful fallback
+        document.querySelectorAll('.report-multi').forEach(function(el) {
+            new Choices(el, {
+                removeItemButton: true,
+                shouldSort: false,
+                placeholder: true,
+                placeholderValue: el.getAttribute('data-placeholder') || '',
+            });
+        });
+    });
+})();
+</script>
+{% endif %}
diff --git a/core/views.py b/core/views.py
index d3a560a..b557aab 100644
--- a/core/views.py
+++ b/core/views.py
@@ -430,6 +430,9 @@ def index(request):
             'certs_expired_count': certs_expired_count,
             'certs_expiring_count': certs_expiring_count,
             'certs_alert_total': certs_alert_total,
+            # Empty on the home dashboard — modal opens clean (no pre-selected filters)
+            'selected_project_ids': [],
+            'selected_team_ids': [],
         }
         return render(request, 'core/index.html', context)
 
@@ -2383,6 +2386,11 @@ def generate_report(request):
     # populate (same lists the Dashboard modal uses)
     context['projects'] = Project.objects.all().order_by('name')
     context['teams'] = Team.objects.all().order_by('name')
+    # For the modal's <select multiple> pre-selection: stringify the IDs so
+    # the template's `{% if p.id|stringformat:"s" in selected_project_ids %}`
+    # comparison works (Django templates compare strings to strings).
+    context['selected_project_ids'] = [str(p) for p in (project_ids or [])]
+    context['selected_team_ids'] = [str(t) for t in (team_ids or [])]
 
     return render(request, 'core/report.html', context)