diff --git a/src/components/clients/client-detail-header.tsx b/src/components/clients/client-detail-header.tsx
index becfbc4..efe9ab8 100644
--- a/src/components/clients/client-detail-header.tsx
+++ b/src/components/clients/client-detail-header.tsx
@@ -2,7 +2,8 @@
 
 import { useState } from 'react';
 import { useMutation, useQueryClient } from '@tanstack/react-query';
-import { Archive, RotateCcw, Mail, Phone } from 'lucide-react';
+import { Archive, Mail, MessageCircle, Phone, RotateCcw } from 'lucide-react';
+import { format } from 'date-fns';
 
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -12,31 +13,28 @@ import { DetailHeaderStrip } from '@/components/shared/detail-header-strip';
 import { PortalInviteButton } from '@/components/clients/portal-invite-button';
 import { GdprExportButton } from '@/components/clients/gdpr-export-button';
 import { apiFetch } from '@/lib/api/client';
+import { cn } from '@/lib/utils';
+import { getCountryName } from '@/lib/i18n/countries';
 
 interface ClientDetailHeaderProps {
   client: {
     id: string;
     fullName: string;
-    nationality?: string | null;
-    preferredContactMethod?: string | null;
-    preferredLanguage?: string | null;
-    timezone?: string | null;
-    source?: string | null;
-    sourceDetails?: string | null;
+    nationalityIso?: string | null;
     archivedAt?: string | null;
-    contacts?: Array<{ channel: string; value: string; isPrimary: boolean; label?: string | null }>;
+    createdAt?: string;
+    contacts?: Array<{
+      channel: string;
+      value: string;
+      valueE164?: string | null;
+      isPrimary: boolean;
+      label?: string | null;
+    }>;
     tags?: Array<{ id: string; name: string; color: string }>;
     clientPortalEnabled?: boolean;
   };
 }
 
-const SOURCE_LABELS: Record<string, string> = {
-  website: 'Website',
-  manual: 'Manual',
-  referral: 'Referral',
-  broker: 'Broker',
-};
-
 export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
   const queryClient = useQueryClient();
   const [archiveOpen, setArchiveOpen] = useState(false);
@@ -62,19 +60,34 @@ export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
   });
 
   const primaryEmail =
-    client.contacts?.find((c) => c.channel === 'email' && c.isPrimary) ??
-    client.contacts?.find((c) => c.channel === 'email');
-  const primaryPhone =
+    client.contacts?.find((c) => c.channel === 'email' && c.isPrimary)?.value ??
+    client.contacts?.find((c) => c.channel === 'email')?.value;
+  const primaryPhoneContact =
     client.contacts?.find((c) => c.channel === 'phone' && c.isPrimary) ??
     client.contacts?.find((c) => c.channel === 'phone');
+  const primaryPhone = primaryPhoneContact?.value;
+  // wa.me requires the E.164 number without the leading "+". Strip from the
+  // canonical E.164 form when available; otherwise strip non-digits from the
+  // display value as a best-effort fallback.
+  const whatsappNumber = primaryPhoneContact?.valueE164
+    ? primaryPhoneContact.valueE164.replace(/^\+/, '')
+    : primaryPhoneContact?.value
+      ? primaryPhoneContact.value.replace(/[^\d]/g, '')
+      : null;
+
+  const country = client.nationalityIso ? getCountryName(client.nationalityIso, 'en') : null;
+  const addedLabel = client.createdAt
+    ? `Added ${format(new Date(client.createdAt), 'MMM d, yyyy')}`
+    : null;
+  const meta = [country, addedLabel].filter(Boolean) as string[];
 
   return (
     <>
       <DetailHeaderStrip>
-        <div className="flex items-start gap-3 flex-wrap">
-          <div className="flex-1 min-w-0">
+        <div className="flex items-start gap-3">
+          <div className="min-w-0 flex-1 space-y-2">
             <div className="flex items-center gap-2 flex-wrap">
-              <h1 className="hidden sm:block text-2xl font-bold text-foreground truncate">
+              <h1 className="truncate text-lg font-bold text-foreground sm:text-2xl">
                 {client.fullName}
               </h1>
               {isArchived && (
@@ -84,31 +97,71 @@ export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
               )}
             </div>
 
-            <div className="flex items-center gap-4 mt-2 flex-wrap text-sm text-muted-foreground">
-              {client.source && (
-                <span>
-                  Source:{' '}
-                  <span className="text-foreground">
-                    {SOURCE_LABELS[client.source] ?? client.source}
-                  </span>
-                </span>
-              )}
-              {primaryEmail && (
-                <span className="flex items-center gap-1">
-                  <Mail className="h-3.5 w-3.5" />
-                  {primaryEmail.value}
-                </span>
-              )}
-              {primaryPhone && (
-                <span className="flex items-center gap-1">
-                  <Phone className="h-3.5 w-3.5" />
-                  {primaryPhone.value}
-                </span>
-              )}
+            {meta.length > 0 ? (
+              <p className="text-xs text-muted-foreground sm:text-sm">{meta.join(' · ')}</p>
+            ) : null}
+
+            <div className="flex flex-wrap items-center gap-1.5 pt-1">
+              {primaryEmail ? (
+                <Button
+                  asChild
+                  variant="outline"
+                  size="sm"
+                  className="h-8 gap-1.5 px-2.5 [&_svg]:size-3.5"
+                >
+                  <a href={`mailto:${primaryEmail}`} aria-label={`Email ${primaryEmail}`}>
+                    <Mail />
+                    Email
+                  </a>
+                </Button>
+              ) : null}
+              {primaryPhone ? (
+                <Button
+                  asChild
+                  variant="outline"
+                  size="sm"
+                  className="h-8 gap-1.5 px-2.5 [&_svg]:size-3.5"
+                >
+                  <a href={`tel:${primaryPhone}`} aria-label={`Call ${primaryPhone}`}>
+                    <Phone />
+                    Call
+                  </a>
+                </Button>
+              ) : null}
+              {whatsappNumber ? (
+                <Button
+                  asChild
+                  variant="outline"
+                  size="sm"
+                  className="h-8 gap-1.5 px-2.5 [&_svg]:size-3.5"
+                >
+                  <a
+                    href={`https://wa.me/${whatsappNumber}`}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    aria-label={`Message ${primaryPhone} on WhatsApp`}
+                  >
+                    <MessageCircle />
+                    WhatsApp
+                  </a>
+                </Button>
+              ) : null}
+              {!isArchived && client.clientPortalEnabled !== false ? (
+                <div className="hidden sm:inline-flex">
+                  <PortalInviteButton
+                    clientId={client.id}
+                    clientName={client.fullName}
+                    defaultEmail={primaryEmail}
+                  />
+                </div>
+              ) : null}
+              <div className="hidden sm:inline-flex">
+                <GdprExportButton clientId={client.id} />
+              </div>
             </div>
 
             {client.tags && client.tags.length > 0 && (
-              <div className="flex flex-wrap gap-1 mt-2">
+              <div className="flex flex-wrap gap-1">
                 {client.tags.map((tag) => (
                   <TagBadge key={tag.id} name={tag.name} color={tag.color} />
                 ))}
@@ -116,34 +169,21 @@ export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
             )}
           </div>
 
-          {/* Actions */}
-          <div className="flex flex-wrap items-center gap-2">
-            {!isArchived && client.clientPortalEnabled !== false && (
-              <PortalInviteButton
-                clientId={client.id}
-                clientName={client.fullName}
-                defaultEmail={primaryEmail?.value}
-              />
+          {/* Top-right: archive/restore as a small icon button — destructive
+              action sits out of the primary action flow. */}
+          <button
+            type="button"
+            onClick={() => setArchiveOpen(true)}
+            aria-label={isArchived ? 'Restore client' : 'Archive client'}
+            title={isArchived ? 'Restore client' : 'Archive client'}
+            className={cn(
+              'shrink-0 rounded-md p-1.5 text-muted-foreground/70 transition-colors',
+              'hover:bg-foreground/5 hover:text-foreground',
+              isArchived ? 'hover:text-foreground' : 'hover:text-destructive',
             )}
-            <GdprExportButton clientId={client.id} />
-            <Button
-              variant={isArchived ? 'outline' : 'outline'}
-              size="sm"
-              onClick={() => setArchiveOpen(true)}
-            >
-              {isArchived ? (
-                <>
-                  <RotateCcw className="mr-1.5 h-3.5 w-3.5" />
-                  Restore
-                </>
-              ) : (
-                <>
-                  <Archive className="mr-1.5 h-3.5 w-3.5" />
-                  Archive
-                </>
-              )}
-            </Button>
-          </div>
+          >
+            {isArchived ? <RotateCcw className="size-4" /> : <Archive className="size-4" />}
+          </button>
         </div>
       </DetailHeaderStrip>