diff --git a/internal/api/projects.go b/internal/api/projects.go
index 482f3cf..f4a6121 100644
--- a/internal/api/projects.go
+++ b/internal/api/projects.go
@@ -169,6 +169,26 @@ func (s *Server) updateProject(w http.ResponseWriter, r *http.Request) {
 // deleteProject handles DELETE /api/projects/{id}.
 func (s *Server) deleteProject(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
+
+	// Clean up Docker containers and proxy routes before deleting the project.
+	ctx := r.Context()
+	stages, _ := s.store.GetStagesByProjectID(id)
+	for _, stage := range stages {
+		instances, _ := s.store.GetInstancesByStageID(stage.ID)
+		for _, inst := range instances {
+			if inst.ContainerID != "" {
+				if err := s.docker.RemoveContainer(ctx, inst.ContainerID, true); err != nil {
+					slog.Warn("delete project: remove container", "container", inst.ContainerID, "error", err)
+				}
+			}
+			if inst.ProxyRouteID != "" {
+				if err := s.proxyProvider.DeleteRoute(ctx, inst.ProxyRouteID); err != nil {
+					slog.Warn("delete project: delete proxy route", "route", inst.ProxyRouteID, "error", err)
+				}
+			}
+		}
+	}
+
 	if err := s.store.DeleteProject(id); err != nil {
 		if errors.Is(err, store.ErrNotFound) {
 			respondNotFound(w, "project")
diff --git a/web/src/lib/components/InstanceCard.svelte b/web/src/lib/components/InstanceCard.svelte
index e4bea80..1b66672 100644
--- a/web/src/lib/components/InstanceCard.svelte
+++ b/web/src/lib/components/InstanceCard.svelte
@@ -13,17 +13,20 @@
 	interface Props {
 		instance: Instance;
 		projectId: string;
+		domain?: string;
 		onchange?: () => void;
 	}
 
-	const { instance, projectId, onchange }: Props = $props();
+	const { instance, projectId, domain = '', onchange }: Props = $props();
 
 	let loading = $state(false);
 	let error = $state('');
 	let confirmAction = $state<'stop' | 'restart' | 'remove' | null>(null);
 
 	const subdomainUrl = $derived(
-		instance.subdomain ? `https://${instance.subdomain}` : ''
+		instance.subdomain && domain
+			? `https://${instance.subdomain}.${domain}`
+			: instance.subdomain ? `https://${instance.subdomain}` : ''
 	);
 
 	const timeSinceCreated = $derived(() => {
diff --git a/web/src/routes/projects/[id]/+page.svelte b/web/src/routes/projects/[id]/+page.svelte
index e888f7a..78e2f9e 100644
--- a/web/src/routes/projects/[id]/+page.svelte
+++ b/web/src/routes/projects/[id]/+page.svelte
@@ -106,6 +106,7 @@
 		}
 	}
 	let tagsLoading = $state(false);
+	let settingsDomain = $state('');
 
 	let showDeleteConfirm = $state(false);
 
@@ -142,6 +143,11 @@
 			} catch {
 				deploys = [];
 			}
+
+			try {
+				const settings = await api.getSettings();
+				settingsDomain = settings.domain ?? '';
+			} catch { /* non-critical */ }
 		} catch (e) {
 			error = e instanceof Error ? e.message : $t('projectDetail.loadFailed');
 		} finally {
@@ -486,6 +492,7 @@
 											<InstanceCard
 												{instance}
 												{projectId}
+												domain={settingsDomain}
 												onchange={loadProject}
 											/>
 										{/each}