diff --git a/app.py b/app.py
index ca28295..8261be1 100644
--- a/app.py
+++ b/app.py
@@ -4,6 +4,7 @@ import sqlite3
 from datetime import datetime
 from typing import Optional
 
+import markdown as md
 import requests
 from fastapi import FastAPI, File, Form, HTTPException, UploadFile
 from fastapi.responses import HTMLResponse, PlainTextResponse, Response
@@ -116,6 +117,13 @@ button{{background:linear-gradient(90deg,var(--acc),var(--acc2));color:#001018;b
 button:hover{{filter:brightness(1.05)}}
 textarea{{width:100%;min-height:150px}}
 pre{{white-space:pre-wrap;background:#020617;color:#86efac;padding:12px;border-radius:12px;border:1px solid #1e293b}}
+.mdview{{line-height:1.55}}
+.mdview h1,.mdview h2,.mdview h3{{margin:16px 0 8px}}
+.mdview p{{margin:10px 0}}
+.mdview ul,.mdview ol{{padding-left:22px}}
+.mdview code{{background:#0b1222;padding:2px 5px;border-radius:6px}}
+.mdview pre code{{display:block;padding:10px}}
+.mdview blockquote{{border-left:3px solid #334155;padding-left:10px;color:#cbd5e1}}
 .row{{display:flex;gap:8px;flex-wrap:wrap;align-items:center}}
 small{{color:var(--muted)}}
 .hint{{color:var(--muted);font-size:13px}}
@@ -344,11 +352,12 @@ def view_document(doc_id: int):
     if not d:
         raise HTTPException(404, "not found")
 
+    rendered = md.markdown(d["content_md"] or "", extensions=["fenced_code", "tables", "nl2br"])
     body = f"""
 <h2>Dokument #{d['id']} – {d['title']}</h2>
 <p><small>Projekt: {d['project']} · Typ: {d['kind']} · {d['created_at']}</small></p>
 <p><a href='/document/{doc_id}/download.md'>Download .md</a></p>
-<pre>{(d['content_md'] or '').replace('<','&lt;')}</pre>
+<div class='card mdview'>{rendered}</div>
 """
     return layout("Dokument", body)
 
diff --git a/requirements.txt b/requirements.txt
index 2d5ec1e..96047bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ fastapi==0.115.6
 uvicorn[standard]==0.32.1
 requests==2.32.3
 python-multipart==0.0.12
+markdown==3.7