diff --git a/ui/src/pages/Admin/EnvironmentsPage.tsx b/ui/src/pages/Admin/EnvironmentsPage.tsx
index 281f2340..3b6f51d9 100644
--- a/ui/src/pages/Admin/EnvironmentsPage.tsx
+++ b/ui/src/pages/Admin/EnvironmentsPage.tsx
@@ -333,12 +333,20 @@ function DefaultResourcesSection({ environment, onSave, saving }: {
   const [memoryReserve, setMemoryReserve] = useState('');
   const [cpuShares, setCpuShares] = useState('');
   const [cpuLimit, setCpuLimit] = useState('');
+  const [routingMode, setRoutingMode] = useState(String(defaults.routingMode ?? 'path'));
+  const [routingDomain, setRoutingDomain] = useState(String(defaults.routingDomain ?? ''));
+  const [serverUrl, setServerUrl] = useState(String(defaults.serverUrl ?? ''));
+  const [envSslOffloading, setEnvSslOffloading] = useState(defaults.sslOffloading !== false);
 
   useEffect(() => {
     setMemoryLimit(String(defaults.memoryLimitMb ?? ''));
     setMemoryReserve(String(defaults.memoryReserveMb ?? ''));
     setCpuShares(String(defaults.cpuShares ?? ''));
     setCpuLimit(String(defaults.cpuLimit ?? ''));
+    setRoutingMode(String(environment.defaultContainerConfig.routingMode ?? 'path'));
+    setRoutingDomain(String(environment.defaultContainerConfig.routingDomain ?? ''));
+    setServerUrl(String(environment.defaultContainerConfig.serverUrl ?? ''));
+    setEnvSslOffloading(environment.defaultContainerConfig.sslOffloading !== false);
     setEditing(false);
   }, [environment.id]);
 
@@ -347,6 +355,10 @@ function DefaultResourcesSection({ environment, onSave, saving }: {
     setMemoryReserve(String(defaults.memoryReserveMb ?? ''));
     setCpuShares(String(defaults.cpuShares ?? ''));
     setCpuLimit(String(defaults.cpuLimit ?? ''));
+    setRoutingMode(String(defaults.routingMode ?? 'path'));
+    setRoutingDomain(String(defaults.routingDomain ?? ''));
+    setServerUrl(String(defaults.serverUrl ?? ''));
+    setEnvSslOffloading(defaults.sslOffloading !== false);
     setEditing(false);
   }
 
@@ -356,6 +368,10 @@ function DefaultResourcesSection({ environment, onSave, saving }: {
       memoryReserveMb: memoryReserve ? parseInt(memoryReserve) : null,
       cpuShares: cpuShares ? parseInt(cpuShares) : null,
       cpuLimit: cpuLimit ? parseFloat(cpuLimit) : null,
+      routingMode,
+      routingDomain: routingDomain || null,
+      serverUrl: serverUrl || null,
+      sslOffloading: envSslOffloading,
     });
     setEditing(false);
   }
@@ -386,6 +402,29 @@ function DefaultResourcesSection({ environment, onSave, saving }: {
         {editing
           ? <Input value={cpuLimit} onChange={(e) => setCpuLimit(e.target.value)} placeholder="e.g. 1.0" style={{ width: 100 }} />
           : <span className={styles.metaValue}>{defaults.cpuLimit ? `${defaults.cpuLimit} cores` : '—'}</span>}
+
+        <span className={styles.metaLabel}>Routing Mode</span>
+        {editing
+          ? <select value={routingMode} onChange={(e) => setRoutingMode(e.target.value)} style={{ padding: '4px 8px', border: '1px solid var(--border-subtle)', borderRadius: 4, background: 'var(--bg-surface)', color: 'var(--text-primary)', fontSize: 12 }}>
+              <option value="path">Path-based</option>
+              <option value="subdomain">Subdomain</option>
+            </select>
+          : <span className={styles.metaValue}>{routingMode === 'subdomain' ? 'Subdomain' : 'Path-based'}</span>}
+
+        <span className={styles.metaLabel}>Routing Domain</span>
+        {editing
+          ? <Input value={routingDomain} onChange={(e) => setRoutingDomain(e.target.value)} placeholder="e.g. apps.example.com" style={{ width: 200 }} />
+          : <span className={styles.metaValue}>{String(defaults.routingDomain || '—')}</span>}
+
+        <span className={styles.metaLabel}>Server URL</span>
+        {editing
+          ? <Input value={serverUrl} onChange={(e) => setServerUrl(e.target.value)} placeholder="auto-detect" style={{ width: 200 }} />
+          : <span className={styles.metaValue}>{String(defaults.serverUrl || '(global default)')}</span>}
+
+        <span className={styles.metaLabel}>SSL Offloading</span>
+        {editing
+          ? <Toggle checked={envSslOffloading} onChange={() => setEnvSslOffloading(!envSslOffloading)} />
+          : <span className={styles.metaValue}>{envSslOffloading ? 'Enabled' : 'Disabled'}</span>}
       </div>
       <div style={{ marginTop: 8, display: 'flex', gap: 8, justifyContent: 'flex-end' }}>
         {editing ? (