diff --git a/docs/technical.md b/docs/technical.md
index 93635d5..45b6fed 100644
--- a/docs/technical.md
+++ b/docs/technical.md
@@ -113,72 +113,77 @@ TTL cache : 5 minutes (le contenu ne bouge pas).
 ## Architecture Services
 
 ```mermaid
-flowchart TB
-    subgraph clients["Clients"]
+flowchart LR
+    subgraph clients["📱 Clients"]
+        direction TB
         mobile["Mobile Apps<br/>iOS/Android<br/>Flutter"]
         carplay["CarPlay /<br/>Android Auto"]
     end
 
-    subgraph ovh["OVH VPS Essential (Gravelines, France)"]
-        nginx["NGINX Cache<br/>+ Let's Encrypt<br/>TLS 1.3, Rate Limiting"]
-        api["API Gateway<br/>Go + Fiber :8080"]
+    subgraph ovh["🇫🇷 OVH VPS Essential (Gravelines, France)"]
+        direction TB
 
-        subgraph services["Backend Services (Monolithe Modulaire)"]
-            auth["Auth Service<br/>JWT validation"]
-            user["User Service<br/>Profils, Jauges"]
-            content["Content/Geo Service<br/>Recommandations<br/>PostGIS queries"]
-            streaming["Streaming Service<br/>HLS generation"]
-            payment["Payment Service<br/>Mangopay integration"]
-            notif["Notification Service<br/>FCM/APNS"]
+        nginx["🌐 NGINX<br/>Cache + TLS 1.3<br/>Rate Limiting"]
+        api["🚪 API Gateway<br/>Go + Fiber<br/>:8080"]
+
+        subgraph services["Backend (Monolithe Modulaire)"]
+            direction LR
+            auth["🔐 Auth"]
+            user["👤 User"]
+            content["🎙️ Content/Geo"]
+            streaming["📡 Streaming"]
+            payment["💳 Payment"]
+            notif["🔔 Notif"]
         end
 
-        zitadel["Zitadel IdP<br/>OAuth2 PKCE<br/>:8081"]
-        ip2loc["IP2Location DB<br/>SQLite ~50MB<br/>Mode dégradé"]
+        zitadel["🔑 Zitadel<br/>OAuth2 PKCE<br/>:8081"]
+        ip2loc["🌍 IP2Location<br/>SQLite 50MB"]
 
-        subgraph data["Données"]
-            pgbouncer["PgBouncer<br/>Connection pooling<br/>:6432"]
-            postgres["PostgreSQL 16<br/>+ PostGIS 3.4<br/>Schémas:<br/>- roadwave<br/>- zitadel"]
-            redis["Redis 7 Cluster<br/>Cache + Geospatial<br/>GEORADIUS"]
+        subgraph data["💾 Données"]
+            direction TB
+            pgbouncer["PgBouncer<br/>:6432"]
+            postgres["PostgreSQL 16<br/>+ PostGIS 3.4"]
+            redis["Redis 7<br/>Cache + Geo"]
         end
     end
 
-    subgraph external["Services Externes"]
-        storage["OVH Object Storage<br/>Fichiers audio HLS"]
-        mangopay["Mangopay<br/>Paiements, KYC"]
-        brevo["Brevo<br/>Emails transactionnels"]
-        fcm["FCM / APNS<br/>Push notifications"]
+    subgraph external["☁️ Services Externes"]
+        direction TB
+        storage["OVH Object Storage<br/>(Fichiers HLS)"]
+        mangopay["Mangopay<br/>(Paiements/KYC)"]
+        brevo["Brevo<br/>(Emails)"]
+        fcm["FCM/APNS<br/>(Push)"]
     end
 
-    mobile --> nginx
-    carplay --> nginx
+    %% Flux clients
+    clients --> nginx
     nginx --> api
-    api --> auth
-    api --> user
-    api --> content
-    api --> streaming
-    api --> payment
-    api --> notif
+
+    %% API vers services
+    api --> services
     api --> ip2loc
 
+    %% Services vers infra
     auth --> zitadel
-    user --> pgbouncer
-    user --> redis
-    content --> pgbouncer
-    content --> redis
+    user --> data
+    content --> data
     streaming --> storage
     payment --> mangopay
     notif --> fcm
 
+    %% Infra interne
     zitadel --> pgbouncer
     pgbouncer --> postgres
 
-    brevo -.email.-> mobile
-    fcm -.push.-> mobile
+    %% Retours vers clients
+    brevo -.email.-> clients
+    fcm -.push.-> clients
 
-    style ovh fill:#e3f2fd
-    style external fill:#fff3e0
-    style clients fill:#f3e5f5
-    style data fill:#e8f5e9
+    style ovh fill:#e3f2fd,stroke:#1976d2,stroke-width:2px
+    style external fill:#fff3e0,stroke:#f57c00,stroke-width:2px
+    style clients fill:#f3e5f5,stroke:#7b1fa2,stroke-width:2px
+    style data fill:#e8f5e9,stroke:#388e3c,stroke-width:2px
+    style services fill:#fff,stroke:#666,stroke-width:1px
 ```
 
 **Souveraineté** : 100% données en France (RGPD compliant)