diff --git a/App/login.html b/App/login.html
new file mode 100644
index 0000000..1bc01cb
--- /dev/null
+++ b/App/login.html
@@ -0,0 +1,175 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>GeoGraSim — Anmelden</title>
+  <link rel="icon" type="image/png" href="assets/img/logo.png">
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap" rel="stylesheet">
+  <style>
+    *{margin:0;padding:0;box-sizing:border-box}
+    body{font-family:'Inter',sans-serif;background:#f7f6f3;min-height:100vh;display:flex;align-items:center;justify-content:center}
+    .card{background:#fff;border-radius:16px;padding:2rem;max-width:400px;width:90%;box-shadow:0 8px 30px rgba(0,0,0,.08)}
+    .logo{text-align:center;margin-bottom:1.2rem}
+    .logo h1{font-size:1.3rem;font-weight:800;color:#4a7c8a;letter-spacing:-.02em}
+    .logo p{font-size:.78rem;color:#8a8a8a;margin-top:.2rem}
+    .tabs{display:flex;gap:0;margin-bottom:1.2rem;border-radius:8px;overflow:hidden;border:1px solid rgba(0,0,0,.08)}
+    .tab{flex:1;padding:.5rem;text-align:center;font-size:.75rem;font-weight:600;cursor:pointer;background:#f7f6f3;color:#8a8a8a;transition:all .15s}
+    .tab.on{background:#4a7c8a;color:#fff}
+    label{display:block;font-size:.72rem;font-weight:600;color:#4a4a4a;margin-bottom:.2rem;margin-top:.8rem}
+    input{width:100%;padding:.55rem .7rem;border:1.5px solid rgba(0,0,0,.1);border-radius:7px;font-size:.82rem;font-family:inherit;outline:none;transition:border .15s}
+    input:focus{border-color:#4a7c8a}
+    .btn{width:100%;padding:.6rem;border:none;border-radius:8px;background:#4a7c8a;color:#fff;font-size:.85rem;font-weight:700;cursor:pointer;margin-top:1rem;transition:background .15s}
+    .btn:hover{background:#3a6470}
+    .btn-secondary{background:transparent;color:#4a7c8a;border:1.5px solid #4a7c8a}
+    .btn-secondary:hover{background:#dae8ec}
+    .msg{margin-top:.8rem;font-size:.75rem;padding:.4rem .6rem;border-radius:6px;display:none}
+    .msg.err{display:block;background:#f2ddd8;color:#c07a6b}
+    .msg.ok{display:block;background:#dceadd;color:#5a8a5e}
+    .link{text-align:center;margin-top:.8rem;font-size:.72rem;color:#8a8a8a}
+    .link a{color:#4a7c8a;text-decoration:none;font-weight:600}
+    .hidden{display:none}
+  </style>
+</head>
+<body>
+<div class="card">
+  <div class="logo">
+    <h1>🌍 GeoGraSim</h1>
+    <p>Interaktive Simulationen für den Geografieunterricht</p>
+  </div>
+
+  <div class="tabs">
+    <div class="tab on" data-tab="student">Schüler:in</div>
+    <div class="tab" data-tab="teacher">Lehrkraft</div>
+  </div>
+
+  <!-- SCHUELER LOGIN -->
+  <form id="f-student">
+    <label>Klassencode</label>
+    <input type="text" id="s-code" placeholder="z.B. GEO1A" maxlength="6" autocapitalize="characters">
+    <label>Benutzername</label>
+    <input type="text" id="s-user" placeholder="z.B. schueler01">
+    <label>Passwort</label>
+    <input type="password" id="s-pass">
+    <button type="submit" class="btn">Anmelden</button>
+  </form>
+
+  <!-- LEHRER LOGIN -->
+  <form id="f-teacher" class="hidden">
+    <div id="teacher-login">
+      <label>E-Mail</label>
+      <input type="email" id="t-email" placeholder="name@schule.at">
+      <label>Passwort</label>
+      <input type="password" id="t-pass">
+      <button type="submit" class="btn">Anmelden</button>
+      <div class="link"><a href="#" id="show-register">Noch kein Konto? Jetzt registrieren</a></div>
+    </div>
+    <div id="teacher-register" class="hidden">
+      <label>Name</label>
+      <input type="text" id="r-name" placeholder="Vor- und Nachname">
+      <label>Schule</label>
+      <input type="text" id="r-school" placeholder="Name der Schule">
+      <label>E-Mail</label>
+      <input type="email" id="r-email" placeholder="name@schule.at">
+      <label>Passwort (mind. 8 Zeichen)</label>
+      <input type="password" id="r-pass" minlength="8">
+      <label>Passwort bestätigen</label>
+      <input type="password" id="r-pass2">
+      <button type="submit" class="btn">Registrieren</button>
+      <div class="link"><a href="#" id="show-login">Bereits registriert? Anmelden</a></div>
+    </div>
+  </form>
+
+  <div class="msg" id="msg"></div>
+</div>
+
+<script>
+var BASE = (window.__GGS__?.baseUrl) || ''
+var tabs = document.querySelectorAll('.tab')
+var fStudent = document.getElementById('f-student')
+var fTeacher = document.getElementById('f-teacher')
+var msg = document.getElementById('msg')
+var isRegister = false
+
+tabs.forEach(function(t) {
+  t.addEventListener('click', function() {
+    tabs.forEach(function(x){x.className='tab'})
+    this.className='tab on'
+    fStudent.classList.toggle('hidden', this.dataset.tab !== 'student')
+    fTeacher.classList.toggle('hidden', this.dataset.tab !== 'teacher')
+    msg.className = 'msg'
+  })
+})
+
+document.getElementById('show-register').addEventListener('click', function(e) {
+  e.preventDefault(); isRegister = true
+  document.getElementById('teacher-login').classList.add('hidden')
+  document.getElementById('teacher-register').classList.remove('hidden')
+})
+document.getElementById('show-login').addEventListener('click', function(e) {
+  e.preventDefault(); isRegister = false
+  document.getElementById('teacher-login').classList.remove('hidden')
+  document.getElementById('teacher-register').classList.add('hidden')
+})
+
+function showMsg(text, type) {
+  msg.textContent = text
+  msg.className = 'msg ' + type
+}
+
+async function api(action, data) {
+  var res = await fetch(BASE + '/api/auth', {
+    method: 'POST', headers: {'Content-Type':'application/json'}, credentials:'same-origin',
+    body: JSON.stringify(Object.assign({action: action}, data))
+  })
+  return await res.json()
+}
+
+// Schueler-Login
+fStudent.addEventListener('submit', async function(e) {
+  e.preventDefault()
+  var code = document.getElementById('s-code').value.trim().toUpperCase()
+  var user = document.getElementById('s-user').value.trim()
+  var pass = document.getElementById('s-pass').value
+  if (!code || !user || !pass) { showMsg('Alle Felder ausfüllen!', 'err'); return }
+  var r = await api('student_login', {classCode: code, username: user, password: pass})
+  if (r.error) { showMsg(r.error, 'err'); return }
+  showMsg('Willkommen, ' + r.displayName + '!', 'ok')
+  setTimeout(function() { location.href = 'index.html' }, 800)
+})
+
+// Lehrer-Login/Register
+fTeacher.addEventListener('submit', async function(e) {
+  e.preventDefault()
+  if (isRegister) {
+    var name = document.getElementById('r-name').value.trim()
+    var school = document.getElementById('r-school').value.trim()
+    var email = document.getElementById('r-email').value.trim()
+    var pass = document.getElementById('r-pass').value
+    var pass2 = document.getElementById('r-pass2').value
+    if (!name || !email || !pass) { showMsg('Alle Felder ausfüllen!', 'err'); return }
+    if (pass !== pass2) { showMsg('Passwörter stimmen nicht überein!', 'err'); return }
+    if (pass.length < 8) { showMsg('Passwort muss mindestens 8 Zeichen haben!', 'err'); return }
+    var r = await api('register', {displayName: name, schoolName: school, email: email, password: pass})
+    if (r.error) { showMsg(r.error, 'err'); return }
+    showMsg('Registrierung erfolgreich!', 'ok')
+    setTimeout(function() { location.href = 'teacher.html' }, 800)
+  } else {
+    var email = document.getElementById('t-email').value.trim()
+    var pass = document.getElementById('t-pass').value
+    if (!email || !pass) { showMsg('E-Mail und Passwort ausfüllen!', 'err'); return }
+    var r = await api('login', {email: email, password: pass})
+    if (r.error) { showMsg(r.error, 'err'); return }
+    showMsg('Willkommen, ' + r.displayName + '!', 'ok')
+    setTimeout(function() { location.href = 'teacher.html' }, 800)
+  }
+})
+
+// Check ob schon eingeloggt
+api('status', {}).then(function(r) {
+  if (r.role === 'teacher') location.href = 'teacher.html'
+  if (r.role === 'student') location.href = 'index.html'
+})
+</script>
+</body>
+</html>
diff --git a/App/pages/handbuch.php b/App/pages/handbuch.php
new file mode 100644
index 0000000..7c70224
--- /dev/null
+++ b/App/pages/handbuch.php
@@ -0,0 +1 @@
+<?php renderPage('handbuch.html');
diff --git a/App/pages/login.php b/App/pages/login.php
new file mode 100644
index 0000000..7c2fc1e
--- /dev/null
+++ b/App/pages/login.php
@@ -0,0 +1 @@
+<?php renderPage('login.html');
diff --git a/App/pages/stadt-editor.php b/App/pages/stadt-editor.php
new file mode 100644
index 0000000..ea0ee68
--- /dev/null
+++ b/App/pages/stadt-editor.php
@@ -0,0 +1 @@
+<?php renderPage('stadt-editor.html');
diff --git a/App/pages/teacher.php b/App/pages/teacher.php
new file mode 100644
index 0000000..7b23dd1
--- /dev/null
+++ b/App/pages/teacher.php
@@ -0,0 +1 @@
+<?php renderPage('teacher.html');
diff --git a/App/stadt.html b/App/stadt.html
index d7aad11..5a27499 100644
--- a/App/stadt.html
+++ b/App/stadt.html
@@ -5,446 +5,293 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>GeoGraSim — Stadt & Raumplanung</title>
   <link rel="icon" type="image/png" href="assets/img/logo.png">
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap" rel="stylesheet">
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap" rel="stylesheet">
   <style>
-    *,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
-    :root{--bg:#f4f3ef;--white:#fff;--text:#1a1a1a;--text2:#4a4a4a;--text3:#8a8a8a;--fjord:#4a7c8a;--fjord-l:#dae8ec;--fjord-d:#3a6470;--moss:#5a8a5e;--sand:#c4a35a;--coral:#c07a6b;--coral-l:#f2ddd8}
-    html,body{height:100%;overflow:hidden}
-    body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);display:flex;flex-direction:column}
-    .nav{padding:.4rem .8rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(0,0,0,.05);background:var(--white);flex-shrink:0}
-    .nav-brand{display:flex;align-items:center;gap:.4rem;font-weight:800;font-size:.9rem;color:var(--fjord);text-decoration:none}
-    .nav-brand img{width:24px;height:24px;border-radius:5px}
-    .nav-btn{padding:.25rem .5rem;border:1px solid rgba(0,0,0,.08);border-radius:6px;background:var(--white);color:var(--text2);font-size:.65rem;font-weight:600;cursor:pointer;text-decoration:none}
-    .main{flex:1;display:grid;grid-template-columns:160px 1fr 180px;gap:.3rem;padding:.3rem;min-height:0;overflow:hidden}
-    .panel{background:var(--white);border-radius:8px;border:1px solid rgba(0,0,0,.04);padding:.4rem;box-shadow:0 1px 3px rgba(0,0,0,.02);overflow-y:auto}
-    .panel-h{font-size:.54rem;font-weight:700;color:var(--fjord);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.25rem}
-    .col-left,.col-right{display:flex;flex-direction:column;gap:.3rem;overflow-y:auto}
-    .col-center{display:flex;flex-direction:column;gap:.25rem;min-height:0}
-    .topbar{flex-shrink:0;display:flex;align-items:center;gap:.4rem;background:var(--white);border-radius:7px;padding:.25rem .5rem;border:1px solid rgba(0,0,0,.04)}
-    .topbar .stat{font-size:.65rem;font-weight:700;display:flex;align-items:center;gap:.15rem}
-    .topbar .v{font-size:.8rem}
-    .topbar .gold .v{color:var(--sand)}
-    .topbar .rnd{font-size:.62rem;font-weight:700;color:var(--fjord);margin-left:auto;background:var(--fjord-l);padding:.1rem .4rem;border-radius:4px}
-    .btn-next{padding:.25rem .6rem;border:none;border-radius:5px;background:var(--fjord);color:#fff;font-size:.65rem;font-weight:700;cursor:pointer;margin-left:.2rem}
-    .canvas-wrap{flex:1;background:#92aa6a;border-radius:8px;overflow:hidden;position:relative;min-height:200px;cursor:pointer}
-    .canvas-wrap canvas{width:100%;height:100%;display:block}
-    .param{display:flex;align-items:center;gap:.2rem;padding:.15rem 0;border-bottom:1px solid rgba(0,0,0,.02)}.param:last-child{border:none}
-    .param-i{font-size:.68rem;width:15px;text-align:center}.param-inf{flex:1}
-    .param-n{font-size:.5rem;color:var(--text3)}.param-bar{height:3px;background:#e8e5dc;border-radius:1.5px;margin-top:1px;overflow:hidden}
-    .param-bar-f{height:100%;border-radius:1.5px;transition:width .4s}.param-v{font-size:.58rem;font-weight:700;min-width:15px;text-align:right}
-    .tb{display:flex;align-items:center;gap:.2rem;padding:.22rem .3rem;border:1.5px solid rgba(0,0,0,.04);border-radius:5px;background:var(--white);cursor:pointer;width:100%;text-align:left;margin-bottom:.1rem;transition:all .1s;font-size:.55rem}
-    .tb:hover{border-color:var(--fjord);background:var(--fjord-l)}.tb.on{border-color:var(--fjord);background:var(--fjord);color:#fff}
-    .tb.off{opacity:.2;pointer-events:none;filter:grayscale(100%)}
-    .tb .te{font-size:.75rem;width:16px;text-align:center}.tb .tn{flex:1;font-weight:600}.tb .tc{font-weight:600;color:var(--sand);font-size:.48rem}
-    .msg{font-size:.52rem;padding:.15rem .25rem;border-radius:4px;margin-bottom:.08rem;background:var(--fjord-l);color:var(--fjord-d);line-height:1.25}
-    .msg.warn{background:var(--coral-l);color:var(--coral)}.msg.good{background:rgba(90,138,94,.12);color:var(--moss)}
-    .ov{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:200;backdrop-filter:blur(3px)}
-    .ov-c{background:var(--white);border-radius:12px;padding:1.2rem;max-width:380px;width:90%;text-align:center}
-    .ov-c h2{font-size:.95rem;font-weight:800;margin-bottom:.15rem}.ov-c p{font-size:.7rem;color:var(--text2);margin-bottom:.4rem;line-height:1.35}
-    .ov-btn{padding:.3rem .8rem;border:none;border-radius:5px;background:var(--fjord);color:#fff;font-size:.7rem;font-weight:700;cursor:pointer}
-    .hidden{display:none!important}
-    @media(max-width:800px){.main{grid-template-columns:1fr}}
+    *{margin:0;padding:0;box-sizing:border-box}
+    body{font-family:'Inter',sans-serif;background:#f0efe8;color:#1a1a1a;display:flex;height:100vh;overflow:hidden}
+    .sidebar{width:155px;background:#fff;border-right:1px solid rgba(0,0,0,.06);display:flex;flex-direction:column;overflow-y:auto}
+    .sidebar-section{padding:6px}
+    .sidebar h3{font-size:8px;color:#4a7c8a;text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px;padding:0 4px}
+    .tb{display:flex;align-items:center;gap:3px;padding:3px 4px;border:1.5px solid transparent;border-radius:4px;cursor:pointer;font-size:8px;font-weight:600;margin-bottom:1px;transition:all .1s}
+    .tb:hover{border-color:#4a7c8a;background:#f0f6f8}
+    .tb.on{border-color:#4a7c8a;background:#4a7c8a;color:#fff}
+    .tb.off{opacity:.2;pointer-events:none}
+    .tb .te{font-size:13px}
+    .tb .tc{margin-left:auto;font-size:7px;color:#c4a35a}
+    .center{flex:1;display:flex;flex-direction:column;min-width:0}
+    .topbar{display:flex;align-items:center;gap:6px;padding:4px 8px;background:#fff;border-bottom:1px solid rgba(0,0,0,.05);flex-shrink:0}
+    .topbar .stat{font-size:10px;font-weight:700}
+    .topbar .gold{color:#c4a35a}
+    .topbar .rnd{font-size:9px;color:#4a7c8a;background:#dae8ec;padding:2px 6px;border-radius:4px;font-weight:700;margin-left:auto}
+    .topbar .btn{padding:2px 8px;border:none;border-radius:4px;background:#4a7c8a;color:#fff;font-size:9px;font-weight:700;cursor:pointer}
+    .canvas-area{flex:1;display:flex;align-items:center;justify-content:center;background:#c8d0b8;overflow:hidden}
+    .canvas-area canvas{max-width:100%;max-height:100%}
+    .right{width:155px;background:#fff;border-left:1px solid rgba(0,0,0,.06);display:flex;flex-direction:column;overflow-y:auto;padding:6px}
+    .right h3{font-size:8px;color:#4a7c8a;text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px}
+    .param{display:flex;align-items:center;gap:3px;padding:2px 0;border-bottom:1px solid rgba(0,0,0,.02)}
+    .param:last-child{border:none}
+    .param-i{font-size:10px;width:14px;text-align:center}
+    .param-inf{flex:1}
+    .param-n{font-size:7px;color:#8a8a8a}
+    .param-bar{height:3px;background:#e8e5dc;border-radius:1.5px;margin-top:1px;overflow:hidden}
+    .param-bar-f{height:100%;border-radius:1.5px;transition:width .4s}
+    .param-v{font-size:8px;font-weight:700;min-width:14px;text-align:right}
+    .msg{font-size:7px;padding:2px 4px;border-radius:3px;margin-bottom:1px;background:#dae8ec;color:#3a6470;line-height:1.2}
+    .msg.warn{background:#f2ddd8;color:#c07a6b}
+    .msg.good{background:#dceadd;color:#5a8a5e}
+    .ov{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:100}
+    .ov-c{background:#fff;border-radius:12px;padding:1.2rem;max-width:360px;width:90%;text-align:center}
+    .ov-c h2{font-size:.9rem;font-weight:800;margin-bottom:.15rem}
+    .ov-c p{font-size:.7rem;color:#4a4a4a;margin-bottom:.4rem}
+    .ov-btn{padding:.3rem .8rem;border:none;border-radius:5px;background:#4a7c8a;color:#fff;font-size:.7rem;font-weight:700;cursor:pointer}
+    .hidden{display:none}
+    @media(max-width:700px){.sidebar,.right{display:none}.center{width:100%}}
   </style>
 </head>
 <body>
-<nav class="nav">
-  <a href="index.html" class="nav-brand"><img src="assets/img/logo.png" alt="">Stadt & Raumplanung</a>
-  <div style="display:flex;gap:.15rem"><button id="btn-reset" class="nav-btn">🔄</button><a href="index.html" class="nav-btn">←</a></div>
-</nav>
-<div id="game" class="main">
-  <div class="col-left">
-    <div class="panel"><div class="panel-h">Kennwerte</div><div id="params"></div></div>
-    <div class="panel"><div class="panel-h">Verlauf</div><canvas id="graph" style="width:100%;height:65px;display:block;border-radius:4px;background:#f0eeea"></canvas></div>
+
+<div class="sidebar">
+  <div class="sidebar-section">
+    <h3>Straßen</h3>
+    <div id="road-tools"></div>
   </div>
-  <div class="col-center">
-    <div class="topbar">
-      <div class="stat gold">💰 <span class="v" id="h-bud">0</span></div>
-      <span class="rnd" id="h-rnd">1/10</span>
-      <button class="btn-next" id="btn-next">▶ Runde</button>
-    </div>
-    <div class="canvas-wrap"><canvas id="cv"></canvas></div>
+  <div class="sidebar-section">
+    <h3>Gebäude</h3>
+    <div id="building-tools"></div>
   </div>
-  <div class="col-right">
-    <div class="panel"><div class="panel-h">Bauen</div><div id="tiles"></div></div>
-    <div class="panel"><div class="panel-h">Nachrichten</div><div id="msgs"></div></div>
+  <div class="sidebar-section">
+    <h3>Natur</h3>
+    <div id="nature-tools"></div>
   </div>
 </div>
-<div id="ov-intro" class="ov"><div class="ov-c">
-  <h2>🏘️ Stadt & Raumplanung</h2>
-  <p>Baue eine Siedlung auf isometrischen Kacheln. Jede Kachel hat Straßen eingebaut. Achte darauf, dass sie zusammenpassen!</p>
-  <button class="ov-btn" id="btn-go">Los geht's!</button>
-</div></div>
-<div id="ov-end" class="ov hidden"><div class="ov-c"><h2 id="end-t"></h2><p id="end-p"></p><button class="ov-btn" id="btn-again">Nochmal</button></div></div>
+
+<div class="center">
+  <div class="topbar">
+    <span class="stat gold">💰 <span id="h-bud">50</span></span>
+    <span class="stat" style="font-size:8px;color:#5a8a5e" id="h-inc"></span>
+    <span class="rnd" id="h-rnd">1/10</span>
+    <button class="btn" id="btn-next">▶ Runde</button>
+  </div>
+  <div class="canvas-area"><canvas id="cv"></canvas></div>
+</div>
+
+<div class="right">
+  <h3>Kennwerte</h3>
+  <div id="params"></div>
+  <h3 style="margin-top:6px">Nachrichten</h3>
+  <div id="msgs"></div>
+</div>
+
+<div class="ov" id="ov-intro">
+  <div class="ov-c">
+    <h2>🏘️ Stadt & Raumplanung</h2>
+    <p>Baue eine Siedlung! Wähle links Kacheln und klicke ins Raster. Klicke oben-links/rechts auf platzierte Kacheln zum Drehen. Jede Runde bekommst du neues Budget.</p>
+    <button class="ov-btn" id="btn-go">Los geht's!</button>
+  </div>
+</div>
+<div class="ov hidden" id="ov-end">
+  <div class="ov-c"><h2 id="end-t"></h2><p id="end-p"></p><button class="ov-btn" id="btn-again">Nochmal</button></div>
+</div>
 
 <script>
-// =====================================================================
-// STADT & RAUMPLANUNG — Isometrische Kacheln (SimCity-Stil)
-// Template-basiertes Kachel-System
-// =====================================================================
+var COLS=10, ROWS=10, TS=60
+var GREEN='#b8ccaa', ROAD='#2e2e2e', WHITE='#fff'
 
-const GW=10, GH=10
-const RW = 0.30 // Strassenbreite relativ zur Kachel
+// === ALLE KACHEL-TYPEN ===
+// cat: road/building/nature, conn: [N,E,S,W], emoji: fuer Gebaeude
+var TILES = [
+  // Strassen (cat=0)
+  {n:'Gerade │', cat:0, conn:[1,0,1,0], cost:2, emoji:'', eff:{}},
+  {n:'Gerade ─', cat:0, conn:[0,1,0,1], cost:2, emoji:'', eff:{}},
+  {n:'Kurve ╯',  cat:0, conn:[1,1,0,0], cost:2, emoji:'', eff:{}},
+  {n:'Kurve ╮',  cat:0, conn:[0,1,1,0], cost:2, emoji:'', eff:{}},
+  {n:'Kurve ╭',  cat:0, conn:[0,0,1,1], cost:2, emoji:'', eff:{}},
+  {n:'Kurve ╰',  cat:0, conn:[1,0,0,1], cost:2, emoji:'', eff:{}},
+  {n:'T ┴',      cat:0, conn:[1,1,0,1], cost:3, emoji:'', eff:{}},
+  {n:'T ├',      cat:0, conn:[1,1,1,0], cost:3, emoji:'', eff:{}},
+  {n:'T ┬',      cat:0, conn:[0,1,1,1], cost:3, emoji:'', eff:{}},
+  {n:'T ┤',      cat:0, conn:[1,0,1,1], cost:3, emoji:'', eff:{}},
+  {n:'Kreuzung', cat:0, conn:[1,1,1,1], cost:4, emoji:'', eff:{}},
+  // Gebaeude (cat=1) — mit Strassen + Emojis
+  {n:'Wohngebiet',  cat:1, conn:[1,0,1,0], cost:6, emoji:'🏠🏡🏠', emojis:[{e:'🏠',x:-0.32,y:-0.2,s:0.15},{e:'🏡',x:0.32,y:0,s:0.15},{e:'🏠',x:-0.3,y:0.2,s:0.13},{e:'🏠',x:0.3,y:0.25,s:0.12}], eff:{eco:2,sat:2,env:-1,traf:1}},
+  {n:'Laden',       cat:1, conn:[1,0,1,0], cost:7, emoji:'🏪', emojis:[{e:'🏪',x:0.3,y:0,s:0.22}], eff:{eco:4,sat:2,env:-1,traf:2,sup:5}},
+  {n:'Schule',      cat:1, conn:[0,1,0,1], cost:9, emoji:'🏫', emojis:[{e:'🏫',x:0,y:-0.25,s:0.22}], eff:{eco:1,sat:5,traf:1,sup:4}},
+  {n:'Kirche',      cat:1, conn:[0,0,1,0], cost:8, emoji:'⛪', emojis:[{e:'⛪',x:0,y:-0.05,s:0.4}], eff:{eco:1,sat:4,env:1,sup:2}},
+  {n:'Fabrik',      cat:1, conn:[0,0,1,0], cost:8, emoji:'🏭', emojis:[{e:'🏭',x:0,y:-0.05,s:0.35}], eff:{eco:6,sat:-3,env:-6,traf:4}},
+  {n:'Spital',      cat:1, conn:[1,0,0,0], cost:11,emoji:'🏥', emojis:[{e:'🏥',x:0,y:0.1,s:0.28},{e:'🚑',x:0,y:0.35,s:0.12}], eff:{eco:2,sat:5,traf:2,sup:5}},
+  {n:'Feuerwehr',   cat:1, conn:[0,0,1,0], cost:8, emoji:'🚒', emojis:[{e:'🏠',x:0,y:-0.15,s:0.25},{e:'🚒',x:-0.15,y:0.2,s:0.18},{e:'🚒',x:0.15,y:0.2,s:0.18}], eff:{eco:1,sat:3,sup:3}},
+  {n:'Polizei',     cat:1, conn:[1,0,0,0], cost:7, emoji:'🚔', emojis:[{e:'🏢',x:0,y:0.1,s:0.25},{e:'🚔',x:0,y:0.32,s:0.15}], eff:{eco:1,sat:3,sup:2}},
+  {n:'Supermarkt',  cat:1, conn:[1,0,1,0], cost:9, emoji:'🏪', emojis:[{e:'🏪',x:0.3,y:-0.1,s:0.22},{e:'🚗',x:0.28,y:0.25,s:0.1},{e:'🚙',x:0.36,y:0.15,s:0.1}], eff:{eco:5,sat:3,env:-2,traf:3,sup:8}},
+  {n:'Hochhäuser',  cat:1, conn:[1,0,1,0], cost:10,emoji:'🏢', emojis:[{e:'🏢',x:0.25,y:-0.15,s:0.16},{e:'🏢',x:0.33,y:-0.15,s:0.16},{e:'🏢',x:0.25,y:0.12,s:0.16},{e:'🏢',x:0.33,y:0.12,s:0.16}], eff:{eco:4,env:-2,traf:3}},
+  {n:'Rathaus',     cat:1, conn:[0,0,1,0], cost:12,emoji:'🏛️', emojis:[{e:'🏛️',x:0,y:-0.05,s:0.35}], eff:{eco:3,sat:4,sup:3}},
+  {n:'Tankstelle',  cat:1, conn:[1,0,1,0], cost:5, emoji:'⛽', emojis:[{e:'⛽',x:0.3,y:-0.15,s:0.14},{e:'⛽',x:0.3,y:0,s:0.14},{e:'⛽',x:0.3,y:0.15,s:0.14},{e:'🚗',x:0.38,y:0.05,s:0.1}], eff:{eco:2,env:-2,traf:1}},
+  {n:'Bauernhof',   cat:1, conn:[0,1,0,0], cost:5, emoji:'🌾', emojis:[{e:'🏠',x:0,y:0,s:0.22},{e:'🌾',x:-0.3,y:-0.25,s:0.1},{e:'🌾',x:-0.15,y:-0.25,s:0.1},{e:'🌾',x:0,y:-0.25,s:0.1},{e:'🌾',x:0.15,y:-0.25,s:0.1},{e:'🐄',x:-0.2,y:0.25,s:0.13}], eff:{eco:3,sat:1,env:2,sup:3}},
+  // Natur (cat=2)
+  {n:'Park',        cat:2, conn:[1,0,0,0], cost:4, emoji:'🌳', emojis:[{e:'🌳',x:-0.25,y:0.05,s:0.14},{e:'🌳',x:-0.05,y:0.05,s:0.14},{e:'🌳',x:0.15,y:0.05,s:0.14},{e:'🌳',x:0.3,y:0.05,s:0.13},{e:'🌷',x:-0.2,y:0.3,s:0.07},{e:'🌷',x:0,y:0.3,s:0.07},{e:'🌷',x:0.2,y:0.3,s:0.07}], eff:{sat:4,env:6,sup:1}},
+  {n:'Spielplatz',  cat:2, conn:[1,0,0,0], cost:4, emoji:'🛝', emojis:[{e:'🛝',x:-0.15,y:0.08,s:0.18},{e:'🎠',x:0.18,y:0.08,s:0.15},{e:'⚽',x:0,y:0.3,s:0.08},{e:'🌳',x:-0.35,y:0.3,s:0.1},{e:'🌳',x:0.35,y:0.3,s:0.1}], eff:{sat:5,env:3}},
+]
 
-// === TILE TEMPLATE SYSTEM ===
-// Jede Kachel wird durch ein Template definiert:
-// conn: [N,E,S,W] 1=Strasse verbindet an dieser Kante
-// stub: [N,E,S,W] 0-1, wie weit die Zufahrt reinragt (0=keine, 0.1=kurz/Parkplatz, 0.5=halb, 1=voll)
-// content: Array von {emoji, ox, oy} relativ zum Kachel-Zentrum (-0.5..0.5)
-// eff: Effekte auf Simulation
-const TILES = {
-  empty:       {n:'Leer',         cost:0,  conn:[0,0,0,0], stub:[0,0,0,0], content:[], eff:{}},
-  // Strassen
-  road_ns:     {n:'Straße N-S',   cost:2,  conn:[1,0,1,0], stub:[1,0,1,0], content:[], eff:{traf:1,env:-1}},
-  road_ew:     {n:'Straße O-W',   cost:2,  conn:[0,1,0,1], stub:[0,1,0,1], content:[], eff:{traf:1,env:-1}},
-  road_cross:  {n:'Kreuzung',     cost:3,  conn:[1,1,1,1], stub:[1,1,1,1], content:[], eff:{traf:2,env:-1}},
-  road_t_ews:  {n:'T offen S',    cost:3,  conn:[0,1,1,1], stub:[0,1,1,1], content:[], eff:{traf:1,env:-1}},
-  road_t_new:  {n:'T offen W',    cost:3,  conn:[1,1,0,1], stub:[1,1,0,1], content:[], eff:{traf:1,env:-1}},
-  road_t_nes:  {n:'T offen O',    cost:3,  conn:[1,1,1,0], stub:[1,1,1,0], content:[], eff:{traf:1,env:-1}},
-  road_t_nsw:  {n:'T offen N',    cost:3,  conn:[1,0,1,1], stub:[1,0,1,1], content:[], eff:{traf:1,env:-1}},
-  road_ne:     {n:'Kurve N→O',    cost:2,  conn:[1,1,0,0], stub:[1,1,0,0], content:[], eff:{traf:1,env:-1}},
-  road_es:     {n:'Kurve O→S',    cost:2,  conn:[0,1,1,0], stub:[0,1,1,0], content:[], eff:{traf:1,env:-1}},
-  road_sw:     {n:'Kurve S→W',    cost:2,  conn:[0,0,1,1], stub:[0,0,1,1], content:[], eff:{traf:1,env:-1}},
-  road_wn:     {n:'Kurve W→N',    cost:2,  conn:[1,0,0,1], stub:[1,0,0,1], content:[], eff:{traf:1,env:-1}},
-  // Gebaeude — Strasse geht durch, Gebaeude am Rand
-  housing_ns:  {n:'Wohngebiet │', cost:6,  conn:[1,0,1,0], stub:[1,0,1,0],
-    content:[{e:'🏠',ox:-0.3,oy:-0.1},{e:'🏡',ox:0.3,oy:0.1},{e:'🏠',ox:0.3,oy:-0.15}], eff:{eco:2,sat:2,env:-1,traf:1}},
-  housing_ew:  {n:'Wohngebiet ─', cost:6,  conn:[0,1,0,1], stub:[0,1,0,1],
-    content:[{e:'🏠',ox:-0.1,oy:-0.3},{e:'🏡',ox:0.1,oy:0.3}], eff:{eco:2,sat:2,env:-1,traf:1}},
-  shop_s:      {n:'Laden ↓',      cost:7,  conn:[0,0,1,0], stub:[0,0,0.3,0],
-    content:[{e:'🏪',ox:0,oy:-0.15}], eff:{eco:4,sat:2,env:-1,traf:2,sup:5}},
-  shop_n:      {n:'Laden ↑',      cost:7,  conn:[1,0,0,0], stub:[0.3,0,0,0],
-    content:[{e:'🏪',ox:0,oy:0.1}], eff:{eco:4,sat:2,env:-1,traf:2,sup:5}},
-  park_n:      {n:'Park ↑',       cost:4,  conn:[1,0,0,0], stub:[0.1,0,0,0],
-    content:[{e:'🌳',ox:-0.15,oy:0.05},{e:'🌲',ox:0.2,oy:-0.1},{e:'🌷',ox:0,oy:0.2,s:0.6}], eff:{sat:4,env:6,sup:1}},
-  park_s:      {n:'Park ↓',       cost:4,  conn:[0,0,1,0], stub:[0,0,0.1,0],
-    content:[{e:'🌳',ox:-0.15,oy:-0.1},{e:'🌲',ox:0.2,oy:0.05},{e:'🌷',ox:0,oy:-0.2,s:0.6}], eff:{sat:4,env:6,sup:1}},
-  school_es:   {n:'Schule O↓',    cost:9,  conn:[0,1,1,0], stub:[0,0.3,0.3,0],
-    content:[{e:'🏫',ox:-0.15,oy:-0.15}], eff:{eco:1,sat:5,traf:1,sup:4}},
-  industry_sw: {n:'Industrie S←', cost:8,  conn:[0,0,1,1], stub:[0,0,0.5,0.5],
-    content:[{e:'🏭',ox:0.1,oy:-0.15}], eff:{eco:6,sat:-3,env:-6,traf:4}},
+var grid = []
+for(var r=0;r<ROWS;r++){grid[r]=[];for(var c=0;c<COLS;c++)grid[r][c]=null}
+
+// Start: ein paar Strassen + 2 Haeuser
+grid[4][4]={t:1,r:0};grid[4][5]={t:1,r:0};grid[4][6]={t:1,r:0} // Gerade E-W
+grid[3][5]={t:11,r:0} // Wohngebiet
+
+var sel=-1, budget=50, round=1, maxRounds=10, income=6, gameOver=false
+var scores={eco:40,sat:40,env:55,traf:15,sup:15,reach:25}
+var messages=[{text:'Willkommen! Baue Straßen und Gebäude.',type:''}]
+
+function rotConn(c,n){var r=c.slice();for(var i=0;i<n;i++)r=[r[3],r[0],r[1],r[2]];return r}
+
+// === DRAW TILE ===
+var cv=document.getElementById('cv'), ctx=cv.getContext('2d')
+cv.width=COLS*TS;cv.height=ROWS*TS
+
+function drawTile(px,py,conn,alpha){
+  var S=TS,RW=S*0.4,M=S/2,HR=RW/2,lw=Math.max(1,S/50)
+  var N=conn[0],E=conn[1],So=conn[2],W=conn[3],sum=N+E+So+W
+  if(alpha<1)ctx.globalAlpha=alpha
+  ctx.fillStyle=GREEN;ctx.fillRect(px,py,S,S)
+  if(sum===1){ctx.fillStyle=ROAD;var st=Math.max(2,S*0.02)
+    if(N){ctx.fillRect(px+M-HR,py,RW,st);ctx.beginPath();ctx.arc(px+M,py+st,HR,0,Math.PI);ctx.fill()}
+    if(So){ctx.fillRect(px+M-HR,py+S-st,RW,st);ctx.beginPath();ctx.arc(px+M,py+S-st,HR,Math.PI,0);ctx.fill()}
+    if(E){ctx.fillRect(px+S-st,py+M-HR,st,RW);ctx.beginPath();ctx.arc(px+S-st,py+M,HR,Math.PI*1.5,Math.PI*0.5);ctx.fill()}
+    if(W){ctx.fillRect(px,py+M-HR,st,RW);ctx.beginPath();ctx.arc(px+st,py+M,HR,Math.PI*0.5,Math.PI*1.5);ctx.fill()}
+    ctx.strokeStyle=WHITE;ctx.lineWidth=lw
+    if(N){ctx.beginPath();ctx.moveTo(px+M-HR,py);ctx.lineTo(px+M-HR,py+st);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,py);ctx.lineTo(px+M+HR,py+st);ctx.stroke();ctx.beginPath();ctx.arc(px+M,py+st,HR,0,Math.PI);ctx.stroke()}
+    if(So){ctx.beginPath();ctx.moveTo(px+M-HR,py+S);ctx.lineTo(px+M-HR,py+S-st);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,py+S);ctx.lineTo(px+M+HR,py+S-st);ctx.stroke();ctx.beginPath();ctx.arc(px+M,py+S-st,HR,Math.PI,0);ctx.stroke()}
+    if(E){ctx.beginPath();ctx.moveTo(px+S,py+M-HR);ctx.lineTo(px+S-st,py+M-HR);ctx.stroke();ctx.beginPath();ctx.moveTo(px+S,py+M+HR);ctx.lineTo(px+S-st,py+M+HR);ctx.stroke();ctx.beginPath();ctx.arc(px+S-st,py+M,HR,Math.PI*1.5,Math.PI*0.5);ctx.stroke()}
+    if(W){ctx.beginPath();ctx.moveTo(px,py+M-HR);ctx.lineTo(px+st,py+M-HR);ctx.stroke();ctx.beginPath();ctx.moveTo(px,py+M+HR);ctx.lineTo(px+st,py+M+HR);ctx.stroke();ctx.beginPath();ctx.arc(px+st,py+M,HR,Math.PI*0.5,Math.PI*1.5);ctx.stroke()}
+    ctx.globalAlpha=1;return}
+  var isCurve=sum===2&&((N&&E)||(E&&So)||(So&&W)||(W&&N))
+  if(isCurve){var cx_,cy_,sa,ea
+    if(N&&E){cx_=px+M+HR;cy_=py+M-HR;sa=Math.PI;ea=Math.PI*0.5}
+    if(E&&So){cx_=px+M+HR;cy_=py+M+HR;sa=Math.PI*1.5;ea=Math.PI}
+    if(So&&W){cx_=px+M-HR;cy_=py+M+HR;sa=0;ea=Math.PI*1.5}
+    if(W&&N){cx_=px+M-HR;cy_=py+M-HR;sa=Math.PI*0.5;ea=0}
+    ctx.fillStyle=ROAD
+    if(N)ctx.fillRect(px+M-HR,py,RW,M-HR);if(So)ctx.fillRect(px+M-HR,py+M+HR,RW,M-HR)
+    if(E)ctx.fillRect(px+M+HR,py+M-HR,M-HR,RW);if(W)ctx.fillRect(px,py+M-HR,M-HR,RW)
+    ctx.beginPath();ctx.moveTo(cx_,cy_);ctx.arc(cx_,cy_,RW,sa,ea,true);ctx.closePath();ctx.fill()
+    ctx.strokeStyle=WHITE;ctx.lineWidth=lw;ctx.beginPath();ctx.arc(cx_,cy_,RW,sa,ea,true);ctx.stroke()
+    if(N){ctx.beginPath();ctx.moveTo(px+M-HR,py);ctx.lineTo(px+M-HR,cy_);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,py);ctx.lineTo(px+M+HR,cy_);ctx.stroke()}
+    if(So){ctx.beginPath();ctx.moveTo(px+M-HR,cy_);ctx.lineTo(px+M-HR,py+S);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,cy_);ctx.lineTo(px+M+HR,py+S);ctx.stroke()}
+    if(E){ctx.beginPath();ctx.moveTo(cx_,py+M-HR);ctx.lineTo(px+S,py+M-HR);ctx.stroke();ctx.beginPath();ctx.moveTo(cx_,py+M+HR);ctx.lineTo(px+S,py+M+HR);ctx.stroke()}
+    if(W){ctx.beginPath();ctx.moveTo(px,py+M-HR);ctx.lineTo(cx_,py+M-HR);ctx.stroke();ctx.beginPath();ctx.moveTo(px,py+M+HR);ctx.lineTo(cx_,py+M+HR);ctx.stroke()}
+    ctx.setLineDash([S*0.07,S*0.05]);ctx.lineDashOffset=-S*0.035;ctx.beginPath()
+    if(N&&E){ctx.moveTo(px+M,py);ctx.lineTo(px+M,cy_);ctx.arc(cx_,cy_,HR,Math.PI,Math.PI*0.5,true);ctx.lineTo(px+S,py+M)}
+    if(E&&So){ctx.moveTo(px+S,py+M);ctx.lineTo(cx_,py+M);ctx.arc(cx_,cy_,HR,Math.PI*1.5,Math.PI,true);ctx.lineTo(px+M,py+S)}
+    if(So&&W){ctx.moveTo(px+M,py+S);ctx.lineTo(px+M,cy_);ctx.arc(cx_,cy_,HR,0,Math.PI*1.5,true);ctx.lineTo(px,py+M)}
+    if(W&&N){ctx.moveTo(px,py+M);ctx.lineTo(cx_,py+M);ctx.arc(cx_,cy_,HR,Math.PI*0.5,0,true);ctx.lineTo(px+M,py)}
+    ctx.stroke();ctx.setLineDash([]);ctx.lineDashOffset=0;ctx.globalAlpha=1;return}
+  ctx.fillStyle=ROAD
+  if(N)ctx.fillRect(px+M-HR,py,RW,M+HR);if(So)ctx.fillRect(px+M-HR,py+M-HR,RW,M+HR)
+  if(E)ctx.fillRect(px+M-HR,py+M-HR,M+HR,RW);if(W)ctx.fillRect(px,py+M-HR,M+HR,RW)
+  ctx.strokeStyle=WHITE;ctx.lineWidth=lw
+  if(N||So){ctx.beginPath();ctx.moveTo(px+M-HR,N?py:py+M-HR);ctx.lineTo(px+M-HR,So?py+S:py+M+HR);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,N?py:py+M-HR);ctx.lineTo(px+M+HR,So?py+S:py+M+HR);ctx.stroke()}
+  if(E||W){ctx.beginPath();ctx.moveTo(W?px:px+M-HR,py+M-HR);ctx.lineTo(E?px+S:px+M+HR,py+M-HR);ctx.stroke();ctx.beginPath();ctx.moveTo(W?px:px+M-HR,py+M+HR);ctx.lineTo(E?px+S:px+M+HR,py+M+HR);ctx.stroke()}
+  if((N||So)&&(E||W)){ctx.fillStyle=ROAD;ctx.fillRect(px+M-HR+1,py+M-HR-1,RW-2,lw+2);ctx.fillRect(px+M-HR+1,py+M+HR-lw,RW-2,lw+2);ctx.fillRect(px+M-HR-1,py+M-HR+1,lw+2,RW-2);ctx.fillRect(px+M+HR-lw,py+M-HR+1,lw+2,RW-2)}
+  ctx.strokeStyle=WHITE;ctx.lineWidth=lw;ctx.setLineDash([S*0.07,S*0.05]);ctx.lineDashOffset=-S*0.035
+  if(sum===2){if(N||So){ctx.beginPath();ctx.moveTo(px+M,py);ctx.lineTo(px+M,py+S);ctx.stroke()};if(E||W){ctx.beginPath();ctx.moveTo(px,py+M);ctx.lineTo(px+S,py+M);ctx.stroke()}}
+  else if(sum===3){if(!N){ctx.beginPath();ctx.moveTo(px,py+M);ctx.lineTo(px+S,py+M);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M,py+M+HR);ctx.lineTo(px+M,py+S);ctx.stroke();ctx.setLineDash([]);ctx.lineWidth=lw*2;ctx.beginPath();ctx.moveTo(px+M-HR+3,py+M+HR+6);ctx.lineTo(px+M,py+M+HR+6);ctx.stroke();ctx.lineWidth=lw}
+    if(!So){ctx.beginPath();ctx.moveTo(px,py+M);ctx.lineTo(px+S,py+M);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M,py);ctx.lineTo(px+M,py+M-HR);ctx.stroke();ctx.setLineDash([]);ctx.lineWidth=lw*2;ctx.beginPath();ctx.moveTo(px+M,py+M-HR-6);ctx.lineTo(px+M+HR-3,py+M-HR-6);ctx.stroke();ctx.lineWidth=lw}
+    if(!W){ctx.beginPath();ctx.moveTo(px+M,py);ctx.lineTo(px+M,py+S);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,py+M);ctx.lineTo(px+S,py+M);ctx.stroke();ctx.setLineDash([]);ctx.lineWidth=lw*2;ctx.beginPath();ctx.moveTo(px+M+HR+6,py+M);ctx.lineTo(px+M+HR+6,py+M+HR-3);ctx.stroke();ctx.lineWidth=lw}
+    if(!E){ctx.beginPath();ctx.moveTo(px+M,py);ctx.lineTo(px+M,py+S);ctx.stroke();ctx.beginPath();ctx.moveTo(px,py+M);ctx.lineTo(px+M-HR,py+M);ctx.stroke();ctx.setLineDash([]);ctx.lineWidth=lw*2;ctx.beginPath();ctx.moveTo(px+M-HR-6,py+M-HR+3);ctx.lineTo(px+M-HR-6,py+M);ctx.stroke();ctx.lineWidth=lw}}
+  else if(sum===4){ctx.beginPath();ctx.moveTo(px+M,py);ctx.lineTo(px+M,py+S);ctx.stroke();ctx.beginPath();ctx.moveTo(px,py+M);ctx.lineTo(px+M-HR,py+M);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR,py+M);ctx.lineTo(px+S,py+M);ctx.stroke();ctx.setLineDash([]);ctx.lineWidth=lw*2;ctx.beginPath();ctx.moveTo(px+M-HR+6,py+M);ctx.lineTo(px+M-HR+6,py+M+HR-3);ctx.stroke();ctx.beginPath();ctx.moveTo(px+M+HR-6,py+M-HR+3);ctx.lineTo(px+M+HR-6,py+M);ctx.stroke();ctx.lineWidth=lw}
+  ctx.setLineDash([]);ctx.lineDashOffset=0;ctx.globalAlpha=1
 }
 
-function getConn(type){return TILES[type]?.conn||[0,0,0,0]}
-
-// === GAME STATE ===
-let grid=[] // GH x GW tile type strings
-let level=null,round=0,budget=0,gameOver=false,selType=null
-let scores={eco:40,sat:40,env:55,traf:15,sup:15,reach:25}
-let messages=[],history=[],ghostR=-1,ghostC=-1
-
-const LEVELS=[{
-  id:'L1',rounds:10,budget:40,income:6,
-  unlocked:['road_ns','road_ew','road_cross','road_t_ews','road_t_new','road_t_nes','road_t_nsw','road_ne','road_es','road_sw','road_wn','housing_ns','housing_ew','shop_s','shop_n','park_n','park_s'],
-  blockBad:false,
-  initial:[{x:4,y:4,t:'road_ew'},{x:5,y:4,t:'road_ew'},{x:6,y:4,t:'road_ew'},{x:4,y:3,t:'housing_ns'},{x:6,y:5,t:'housing_ns'}],
-  events:[{r:1,m:'Deine Siedlung braucht einen Laden!'},{r:4,m:'Mehr Wohnraum nötig!'},{r:7,m:'Ein Park erhöht die Zufriedenheit.'},{r:9,m:'Letzte Runde!'}],
-  win:50
-}]
-
-function initGame(lvl){
-  level=lvl;round=1;budget=lvl.budget;gameOver=false;selType=null;messages=[];history=[]
-  grid=[];for(let r=0;r<GH;r++){grid[r]=[];for(let c=0;c<GW;c++)grid[r][c]='empty'}
-  for(const t of lvl.initial)grid[t.y][t.x]=t.t
-  recalc();const ev=lvl.events.find(e=>e.r===1);if(ev)addMsg(ev.m,'')
+function drawEmojis(px,py,tile){
+  if(!tile.emojis)return
+  ctx.textAlign='center';ctx.textBaseline='middle'
+  tile.emojis.forEach(function(em){
+    ctx.font=Math.round(TS*em.s)+'px serif'
+    ctx.fillText(em.e, px+TS/2+em.x*TS, py+TS/2+em.y*TS)
+  })
 }
 
-// === SIM ===
+// === SIMULATION ===
 function recalc(){
-  let eco=30,sat=35,env=55,traf=10,sup=10,reach=20,bad=0,iso=0
-  for(let r=0;r<GH;r++)for(let c=0;c<GW;c++){
-    const type=grid[r][c];if(type==='empty')continue
-    const def=TILES[type],ef=def.eff||{}
+  var eco=30,sat=35,env=55,traf=10,sup=10,reach=20
+  for(var r=0;r<ROWS;r++)for(var c=0;c<COLS;c++){
+    if(!grid[r][c])continue
+    var tile=TILES[grid[r][c].t],ef=tile.eff||{}
     eco+=ef.eco||0;sat+=ef.sat||0;env+=ef.env||0;traf+=ef.traf||0;sup+=ef.sup||0
-    const conn=def.conn
-    const dirs=[[-1,0,0,2],[0,1,1,3],[1,0,2,0],[0,-1,3,1]]
-    let anyGood=false
-    for(const[dr,dc,myD,thD]of dirs){
-      if(!conn[myD])continue
-      const nr=r+dr,nc=c+dc
-      if(nr<0||nr>=GH||nc<0||nc>=GW){bad++;continue}
-      const nb=grid[nr][nc];if(nb==='empty'){bad++;continue}
-      if(TILES[nb].conn[thD])anyGood=true;else bad++
-    }
-    if(def.content.length>0&&!anyGood){iso++;reach-=4}else if(def.content.length>0)reach+=3
+    // Connection check
+    var conn=rotConn(tile.conn,grid[r][c].r)
+    var dirs=[[-1,0,0,2],[0,1,1,3],[1,0,2,0],[0,-1,3,1]],any=false
+    for(var d=0;d<dirs.length;d++){if(!conn[dirs[d][2]])continue;var nr=r+dirs[d][0],nc=c+dirs[d][1]
+      if(nr>=0&&nr<ROWS&&nc>=0&&nc<COLS&&grid[nr][nc]){var nb=rotConn(TILES[grid[nr][nc].t].conn,grid[nr][nc].r);if(nb[dirs[d][3]])any=true;else traf++}else traf++}
+    if(tile.cat===1&&!any){reach-=4}else if(tile.cat===1)reach+=3
     // Neighbors
-    if(type.startsWith('housing')){const nb=nbT(r,c);if(nb.some(n=>n.startsWith('park')))sat+=2;if(nb.some(n=>n.startsWith('industry'))){sat-=4;env-=3};if(nb.some(n=>n.startsWith('shop')))sup+=2}
+    if(tile.n==='Wohngebiet'||tile.n==='Hochhäuser'){var nb2=[];if(r>0&&grid[r-1][c])nb2.push(TILES[grid[r-1][c].t]);if(c<COLS-1&&grid[r][c+1])nb2.push(TILES[grid[r][c+1].t]);if(r<ROWS-1&&grid[r+1][c])nb2.push(TILES[grid[r+1][c].t]);if(c>0&&grid[r][c-1])nb2.push(TILES[grid[r][c-1].t])
+      nb2.forEach(function(n){if(n.n==='Park'||n.n==='Spielplatz'){sat+=2;env+=1};if(n.n==='Fabrik'){sat-=4;env-=3};if(n.n.indexOf('Laden')>=0||n.n.indexOf('Supermarkt')>=0){sup+=2;sat+=1}})}
   }
-  traf+=bad;reach-=iso*3
-  const cl=v=>Math.min(100,Math.max(0,Math.round(v)))
+  var cl=function(v){return Math.min(100,Math.max(0,Math.round(v)))}
   scores={eco:cl(eco),sat:cl(sat),env:cl(env),traf:cl(traf),sup:cl(sup),reach:cl(reach)}
 }
-function nbT(r,c){const res=[];if(r>0)res.push(grid[r-1][c]);if(c<GW-1)res.push(grid[r][c+1]);if(r<GH-1)res.push(grid[r+1][c]);if(c>0)res.push(grid[r][c-1]);return res}
 
-function place(r,c){
-  if(gameOver||!selType)return
-  if(grid[r][c]!=='empty'){addMsg('❌ Belegt!','warn');return}
-  if(budget<TILES[selType].cost){addMsg('❌ Kein Budget!','warn');return}
-  if(level.blockBad){
-    const conn=TILES[selType].conn,dirs=[[-1,0,0,2],[0,1,1,3],[1,0,2,0],[0,-1,3,1]]
-    for(const[dr,dc,myD,thD]of dirs){
-      if(!conn[myD])continue;const nr=r+dr,nc=c+dc
-      if(nr>=0&&nr<GH&&nc>=0&&nc<GW&&grid[nr][nc]!=='empty'&&!TILES[grid[nr][nc]].conn[thD]){addMsg('❌ Straße passt nicht!','warn');return}
-    }
-  }
-  grid[r][c]=selType;budget-=TILES[selType].cost;recalc();renderAll()
-}
-function addMsg(t,type){messages.unshift({text:t,type});if(messages.length>10)messages.pop()}
 function nextRound(){
-  if(gameOver)return;history.push({round,...scores});round++;budget+=level.income
-  if(round>level.rounds){
-    gameOver=true;const total=Math.round(0.22*scores.eco+0.24*scores.sat+0.18*scores.env+0.16*scores.sup+0.12*scores.reach+0.08*(100-scores.traf))
-    document.getElementById('end-t').textContent=total>=level.win?'🎉 Geschafft!':'😔 Nicht bestanden'
-    document.getElementById('end-p').textContent=`Score: ${total}`;document.getElementById('ov-end').classList.remove('hidden');return
-  }
-  const ev=level.events.find(e=>e.r===round);if(ev)addMsg(ev.m,'');renderAll()
+  if(gameOver)return;round++;budget+=income;recalc()
+  if(round>maxRounds){gameOver=true
+    var total=Math.round(0.22*scores.eco+0.24*scores.sat+0.18*scores.env+0.16*scores.sup+0.12*scores.reach+0.08*(100-scores.traf))
+    document.getElementById('end-t').textContent=total>=50?'🎉 Geschafft!':'😔'
+    document.getElementById('end-p').textContent='Score: '+total
+    document.getElementById('ov-end').classList.remove('hidden')
+    return}
+  renderUI()
 }
 
-// === ISOMETRIC RENDERER ===
-const $cv=document.getElementById('cv'),ctx=$cv.getContext('2d')
-let W=0,H=0,TW=0,TH=0,mapOx=0,mapOy=0,animT=0
+// === RENDER ===
+var hoverR=-1,hoverC=-1
 
-// Vehicles array
-let cars=[]
-
-function isoX(c,r){return(c-r)*(TW/2)}
-function isoY(c,r){return(c+r)*(TH/2)}
-function screenToGrid(sx,sy){
-  const rx=sx-mapOx,ry=sy-mapOy
-  const c=Math.floor((rx/(TW/2)+ry/(TH/2))/2)
-  const r=Math.floor((ry/(TH/2)-rx/(TW/2))/2)
-  return{r,c}
+function render(){
+  ctx.fillStyle='#c8d0b8';ctx.fillRect(0,0,cv.width,cv.height)
+  for(var r=0;r<ROWS;r++)for(var c=0;c<COLS;c++){
+    var px=c*TS,py=r*TS,cell=grid[r][c]
+    if(cell){var conn=rotConn(TILES[cell.t].conn,cell.r);drawTile(px,py,conn,1);drawEmojis(px,py,TILES[cell.t])}
+    else{ctx.fillStyle=GREEN;ctx.fillRect(px,py,TS,TS)}
+    ctx.strokeStyle='rgba(0,0,0,0.06)';ctx.lineWidth=0.4;ctx.strokeRect(px,py,TS,TS)
+    if(r===hoverR&&c===hoverC&&sel>=0&&!cell){drawTile(px,py,TILES[sel].conn,0.3)}
+  }
+  requestAnimationFrame(render)
 }
 
-function resize(){
-  const rect=$cv.parentElement.getBoundingClientRect(),dpr=devicePixelRatio||1
-  $cv.width=rect.width*dpr;$cv.height=rect.height*dpr
-  ctx.setTransform(dpr,0,0,dpr,0,0)
-  W=rect.width;H=rect.height
-  const n=GW+GH
-  const fitW=(W*0.9)/(n/2),fitH=(H*0.85)/(n/2)
-  TW=Math.min(fitW,fitH*2);TH=TW/2
-  mapOx=(W-(GW+GH)*(TW/2)/2)/2+GH*(TW/2)/2+TW/4
-  mapOy=(H-(GW+GH)*(TH/2)/2)/2+TH
-}
-
-function updateCars(){
-  cars=cars.filter(v=>v.t<1)
-  if(cars.length<6&&Math.random()<0.03){
-    const tiles=[]
-    for(let r=0;r<GH;r++)for(let c=0;c<GW;c++)if(TILES[grid[r][c]]?.conn.some(v=>v))tiles.push({r,c})
-    if(tiles.length){
-      const spot=tiles[Math.floor(Math.random()*tiles.length)]
-      const conn=TILES[grid[spot.r][spot.c]].conn
-      const dirs=[];conn.forEach((v,i)=>{if(v)dirs.push(i)})
-      if(dirs.length){
-        const d=dirs[Math.floor(Math.random()*dirs.length)]
-        const emojis=['🚗','🚙','🚕','🚌']
-        cars.push({r:spot.r,c:spot.c,dir:d,t:0,e:emojis[Math.floor(Math.random()*emojis.length)]})
-      }
-    }
-  }
-  for(const v of cars)v.t+=0.006
-}
-
-function draw(){
-  animT+=0.01
-  updateCars()
-
-  // Sky/grass background
-  ctx.fillStyle='#92aa6a';ctx.fillRect(0,0,W,H)
-
-  // Draw tiles back-to-front
-  for(let r=0;r<GH;r++)for(let c=0;c<GW;c++){
-    const type=grid[r][c]
-    const sx=mapOx+isoX(c,r),sy=mapOy+isoY(c,r)
-    const isGhost=r===ghostR&&c===ghostC&&type==='empty'&&selType
-
-    drawIsoTile(sx,sy,type,1)
-    if(isGhost){
-      ctx.globalAlpha=0.4
-      drawIsoTile(sx,sy,selType,0.4)
-      ctx.globalAlpha=1
-    }
-  }
-
-  // Draw cars
-  const cfs=Math.max(6,TW*0.12)
-  ctx.font=`${cfs}px serif`;ctx.textAlign='center';ctx.textBaseline='middle'
-  for(const v of cars){
-    const sx=mapOx+isoX(v.c,v.r),sy=mapOy+isoY(v.c,v.r)
-    // Move along road direction in iso space
-    const off=v.t*TW*0.4
-    let dx=0,dy=0
-    if(v.dir===0){dx=off*0.5;dy=-off*0.25} // N
-    if(v.dir===1){dx=off*0.5;dy=off*0.25}  // E
-    if(v.dir===2){dx=-off*0.5;dy=off*0.25} // S
-    if(v.dir===3){dx=-off*0.5;dy=-off*0.25}// W
-    // Slight offset to right side of road
-    const rOff=TW*0.04
-    if(v.dir===0||v.dir===2){dx+=rOff}else{dy+=rOff}
-    ctx.fillText(v.e,sx+dx,sy+dy)
-  }
-
-  requestAnimationFrame(draw)
-}
-
-function drawIsoTile(sx,sy,type,alpha){
-  const def=TILES[type]
-  if(!def)return
-  const hw=TW/2,hh=TH/2
-  const conn=def.conn
-
-  // === DIAMOND BASE (green grass) ===
-  ctx.fillStyle='#7da84e'
-  ctx.beginPath()
-  ctx.moveTo(sx,sy-hh)    // top
-  ctx.lineTo(sx+hw,sy)    // right
-  ctx.lineTo(sx,sy+hh)    // bottom
-  ctx.lineTo(sx-hw,sy)    // left
-  ctx.closePath()
-  ctx.fill()
-  // Subtle edge
-  ctx.strokeStyle='rgba(0,0,0,0.06)';ctx.lineWidth=0.5;ctx.stroke()
-
-  // === ROADS as iso parallelograms ===
-  const rw=TW*RW // road width in pixels
-  const rhw=rw/2
-
-  ctx.fillStyle='#3a3a3a'
-  // N: from center toward top-left edge
-  if(conn[0]) drawIsoRoad(sx,sy,hw,hh,rhw,0)
-  // E: from center toward top-right edge
-  if(conn[1]) drawIsoRoad(sx,sy,hw,hh,rhw,1)
-  // S: from center toward bottom-right edge
-  if(conn[2]) drawIsoRoad(sx,sy,hw,hh,rhw,2)
-  // W: from center toward bottom-left edge
-  if(conn[3]) drawIsoRoad(sx,sy,hw,hh,rhw,3)
-
-  // Center junction
-  if(conn.filter(v=>v).length>=2){
-    ctx.fillStyle='#3a3a3a'
-    const jr=rhw*0.7
-    ctx.beginPath();ctx.arc(sx,sy,jr,0,Math.PI*2);ctx.fill()
-  }
-
-  // Road markings (center dashed line + edge lines)
-  for(let d=0;d<4;d++){
-    if(!conn[d])continue
-    drawIsoRoadMarkings(sx,sy,hw,hh,rhw,d)
-  }
-
-  // === BUILDING CONTENT ===
-  if(def.content.length>0){
-    const fs=Math.max(8,TW*0.18)
-    ctx.font=`${fs}px serif`;ctx.textAlign='center';ctx.textBaseline='middle'
-    for(const item of def.content){
-      // Convert content position to iso coordinates
-      const scale=item.s||1
-      ctx.font=`${fs*scale}px serif`
-      // ox,oy are in tile-local coords (-0.5..0.5)
-      // Convert to iso: ox goes along E direction, oy goes along S direction
-      const px=sx + item.ox*TW*0.45 + item.oy*TW*0.05
-      const py=sy + item.ox*TH*0.15 + item.oy*TH*0.4
-      ctx.fillText(item.e,px,py)
-    }
-    ctx.textBaseline='alphabetic'
-  }
-}
-
-function drawIsoRoad(sx,sy,hw,hh,rhw,dir){
-  // Draw road segment from center to edge in direction dir
-  // In iso: N=top-left, E=top-right, S=bottom-right, W=bottom-left
-  const steps=6
-  ctx.beginPath()
-  for(let i=0;i<=steps;i++){
-    const t=i/steps*0.5 // 0..0.5 (center to edge)
-    let px,py
-    if(dir===0){px=sx-t*hw;py=sy-t*hh}       // N (toward top-left)
-    if(dir===1){px=sx+t*hw;py=sy-t*hh}       // E (toward top-right)
-    if(dir===2){px=sx+t*hw;py=sy+t*hh}       // S (toward bottom-right)
-    if(dir===3){px=sx-t*hw;py=sy+t*hh}       // W (toward bottom-left)
-    // Perpendicular offset for road width
-    let nx,ny // normal direction
-    if(dir===0||dir===2){nx=1/(hw/hh);ny=1} else{nx=-1/(hw/hh);ny=1}
-    const len=Math.sqrt(nx*nx+ny*ny);nx/=len;ny/=len
-    if(i===0){
-      ctx.moveTo(px+nx*rhw,py+ny*rhw*0.5)
-    }
-    ctx.lineTo(px+nx*rhw,py+ny*rhw*0.5)
-  }
-  // Go back on the other side
-  for(let i=steps;i>=0;i--){
-    const t=i/steps*0.5
-    let px,py
-    if(dir===0){px=sx-t*hw;py=sy-t*hh}
-    if(dir===1){px=sx+t*hw;py=sy-t*hh}
-    if(dir===2){px=sx+t*hw;py=sy+t*hh}
-    if(dir===3){px=sx-t*hw;py=sy+t*hh}
-    let nx,ny
-    if(dir===0||dir===2){nx=1/(hw/hh);ny=1}else{nx=-1/(hw/hh);ny=1}
-    const len=Math.sqrt(nx*nx+ny*ny);nx/=len;ny/=len
-    ctx.lineTo(px-nx*rhw,py-ny*rhw*0.5)
-  }
-  ctx.closePath()
-  ctx.fill()
-}
-
-function drawIsoRoadMarkings(sx,sy,hw,hh,rhw,dir){
-  // Center dashed line
-  ctx.strokeStyle='rgba(255,255,200,0.5)';ctx.lineWidth=Math.max(1.2,TW*0.015)
-  ctx.setLineDash([TW*0.06,TW*0.04])
-  ctx.beginPath()
-  let ex,ey
-  if(dir===0){ex=sx-hw*0.48;ey=sy-hh*0.48}
-  if(dir===1){ex=sx+hw*0.48;ey=sy-hh*0.48}
-  if(dir===2){ex=sx+hw*0.48;ey=sy+hh*0.48}
-  if(dir===3){ex=sx-hw*0.48;ey=sy+hh*0.48}
-  ctx.moveTo(sx,sy);ctx.lineTo(ex,ey);ctx.stroke()
-  ctx.setLineDash([])
-
-  // Edge lines (solid, thicker)
-  ctx.strokeStyle='rgba(255,255,255,0.3)';ctx.lineWidth=Math.max(0.8,TW*0.01)
-  let nx,ny
-  if(dir===0||dir===2){nx=1/(hw/hh);ny=1}else{nx=-1/(hw/hh);ny=1}
-  const len=Math.sqrt(nx*nx+ny*ny);nx/=len;ny/=len
-  for(const side of [1,-1]){
-    ctx.beginPath()
-    ctx.moveTo(sx+nx*rhw*side,sy+ny*rhw*0.5*side)
-    ctx.lineTo(ex+nx*rhw*side,ey+ny*rhw*0.5*side)
-    ctx.stroke()
-  }
-}
-
-// === UI ===
-function renderAll(){
+function renderUI(){
   document.getElementById('h-bud').textContent=budget
-  document.getElementById('h-rnd').textContent=`${round}/${level.rounds}`
-  if(selType&&budget<TILES[selType].cost)selType=null
-  const ps=[{n:'Wirtschaft',i:'💰',v:scores.eco},{n:'Zufriedenheit',i:'😊',v:scores.sat},{n:'Umwelt',i:'🌿',v:scores.env},{n:'Verkehr',i:'🚗',v:scores.traf,inv:1},{n:'Versorgung',i:'🛒',v:scores.sup},{n:'Erreichbarkeit',i:'🔗',v:scores.reach}]
-  document.getElementById('params').innerHTML=ps.map(p=>{const g=p.inv?p.v<40:p.v>55,b=p.inv?p.v>65:p.v<30,col=b?'var(--coral)':g?'var(--moss)':'var(--sand)';return`<div class="param"><div class="param-i">${p.i}</div><div class="param-inf"><div class="param-n">${p.n}</div><div class="param-bar"><div class="param-bar-f" style="width:${p.v}%;background:${col}"></div></div></div><div class="param-v" style="color:${col}">${p.v}</div></div>`}).join('')
-  document.getElementById('tiles').innerHTML=level.unlocked.map(id=>{const d=TILES[id],af=budget>=d.cost;return`<div class="tb ${selType===id?'on':''} ${!af?'off':''}" data-t="${id}"><span class="te">${d.content[0]?.e||'🛣️'}</span><span class="tn">${d.n}</span><span class="tc">💰${d.cost}</span></div>`}).join('')
-  document.querySelectorAll('.tb').forEach(b=>b.addEventListener('click',()=>{selType=selType===b.dataset.t?null:b.dataset.t;renderAll()}))
-  document.getElementById('msgs').innerHTML=messages.slice(0,7).map(m=>`<div class="msg ${m.type}">${m.text}</div>`).join('')
-  drawGraph()
+  document.getElementById('h-rnd').textContent=round+'/'+maxRounds
+  document.getElementById('h-inc').textContent='+'+income+'/Runde'
+  if(sel>=0&&budget<TILES[sel].cost)sel=-1
+  // Params
+  var ps=[{n:'Wirtschaft',i:'💰',v:scores.eco},{n:'Zufriedenheit',i:'😊',v:scores.sat},{n:'Umwelt',i:'🌿',v:scores.env},{n:'Verkehr',i:'🚗',v:scores.traf,inv:1},{n:'Versorgung',i:'🛒',v:scores.sup},{n:'Erreichbarkeit',i:'🔗',v:scores.reach}]
+  document.getElementById('params').innerHTML=ps.map(function(p){var g=p.inv?p.v<40:p.v>55,b=p.inv?p.v>65:p.v<30,col=b?'#c07a6b':g?'#5a8a5e':'#c4a35a';return'<div class="param"><div class="param-i">'+p.i+'</div><div class="param-inf"><div class="param-n">'+p.n+'</div><div class="param-bar"><div class="param-bar-f" style="width:'+p.v+'%;background:'+col+'"></div></div></div><div class="param-v" style="color:'+col+'">'+p.v+'</div></div>'}).join('')
+  document.getElementById('msgs').innerHTML=messages.slice(-5).reverse().map(function(m){return'<div class="msg '+m.type+'">'+m.text+'</div>'}).join('')
+  // Tools
+  ;[['road-tools',0],['building-tools',1],['nature-tools',2]].forEach(function(pair){
+    var html='';TILES.forEach(function(t,i){if(t.cat!==pair[1])return;var af=budget>=t.cost
+      html+='<div class="tb'+(sel===i?' on':'')+(af?'':' off')+'" data-t="'+i+'"><span class="te">'+(t.emoji||'🛣️')+'</span>'+t.n+'<span class="tc">💰'+t.cost+'</span></div>'})
+    document.getElementById(pair[0]).innerHTML=html})
+  document.querySelectorAll('.tb').forEach(function(b){b.addEventListener('click',function(){var i=parseInt(this.dataset.t);sel=sel===i?-1:i;renderUI()})})
 }
-function drawGraph(){const gc=document.getElementById('graph');if(!gc||history.length<1)return;const gx=gc.getContext('2d'),rect=gc.parentElement.getBoundingClientRect(),dpr=devicePixelRatio||1;gc.width=rect.width*dpr;gc.height=65*dpr;gx.setTransform(dpr,0,0,dpr,0,0);const gW=rect.width,gH=65;gx.clearRect(0,0,gW,gH);const lines=[{k:'eco',c:'#c4a35a'},{k:'sat',c:'#5a8a5e'},{k:'env',c:'#4a8a4a'},{k:'sup',c:'#4a7c8a'},{k:'reach',c:'#8a6a8a'}];for(const l of lines){gx.strokeStyle=l.c;gx.lineWidth=1;gx.beginPath();history.forEach((h,i)=>{const x=2+(i/Math.max(1,level.rounds-1))*(gW-4),y=2+(gH-4)-(h[l.k]/100)*(gH-4);i===0?gx.moveTo(x,y):gx.lineTo(x,y)});gx.stroke()}}
 
 // === INPUT ===
-$cv.addEventListener('mousemove',e=>{const r=$cv.getBoundingClientRect();const g=screenToGrid(e.clientX-r.left,e.clientY-r.top);ghostR=g.r;ghostC=g.c;if(ghostR<0||ghostR>=GH||ghostC<0||ghostC>=GW){ghostR=-1;ghostC=-1}})
-$cv.addEventListener('click',e=>{
-  if(gameOver||!selType)return;const r=$cv.getBoundingClientRect()
-  const g=screenToGrid(e.clientX-r.left,e.clientY-r.top)
-  if(g.r>=0&&g.r<GH&&g.c>=0&&g.c<GW)place(g.r,g.c)
+cv.addEventListener('click',function(e){
+  if(gameOver)return;var rect=cv.getBoundingClientRect(),mx=(e.clientX-rect.left)*(cv.width/rect.width),my=(e.clientY-rect.top)*(cv.height/rect.height)
+  var gc=Math.floor(mx/TS),gr=Math.floor(my/TS);if(gr<0||gr>=ROWS||gc<0||gc>=COLS)return
+  var cell=grid[gr][gc]
+  if(cell){var rx=mx-gc*TS,ry=my-gr*TS;if(ry<TS*0.35){if(rx<TS*0.4){cell.r=(cell.r+3)%4;return};if(rx>TS*0.6){cell.r=(cell.r+1)%4;return}};return}
+  if(sel>=0&&budget>=TILES[sel].cost){grid[gr][gc]={t:sel,r:0};budget-=TILES[sel].cost;recalc();renderUI()}
 })
-$cv.addEventListener('mouseleave',()=>{ghostR=-1;ghostC=-1})
-document.addEventListener('keydown',e=>{if(selType){selType=null;renderAll()}})
+cv.addEventListener('mousemove',function(e){var rect=cv.getBoundingClientRect();hoverC=Math.floor((e.clientX-rect.left)*(cv.width/rect.width)/TS);hoverR=Math.floor((e.clientY-rect.top)*(cv.height/rect.height)/TS);if(hoverR<0||hoverR>=ROWS||hoverC<0||hoverC>=COLS){hoverR=-1;hoverC=-1}})
+cv.addEventListener('mouseleave',function(){hoverR=-1;hoverC=-1})
+document.addEventListener('keydown',function(e){if(e.key==='Escape'){sel=-1;renderUI()}})
 
 document.getElementById('btn-next').addEventListener('click',nextRound)
-document.getElementById('btn-go').addEventListener('click',()=>{document.getElementById('ov-intro').classList.add('hidden');renderAll()})
-document.getElementById('btn-again').addEventListener('click',()=>{document.getElementById('ov-end').classList.add('hidden');initGame(LEVELS[0]);renderAll()})
-document.getElementById('btn-reset').addEventListener('click',()=>{if(confirm('Neu?')){initGame(LEVELS[0]);renderAll()}})
+document.getElementById('btn-go').addEventListener('click',function(){document.getElementById('ov-intro').classList.add('hidden');renderUI()})
+document.getElementById('btn-again').addEventListener('click',function(){document.getElementById('ov-end').classList.add('hidden');location.reload()})
 
-initGame(LEVELS[0]);resize();window.addEventListener('resize',resize);renderAll();draw()
+recalc();renderUI();render()
 </script>
 </body>
 </html>
diff --git a/App/teacher.html b/App/teacher.html
new file mode 100644
index 0000000..7e2a835
--- /dev/null
+++ b/App/teacher.html
@@ -0,0 +1,290 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>GeoGraSim — Lehrkraft-Dashboard</title>
+  <link rel="icon" type="image/png" href="assets/img/logo.png">
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap" rel="stylesheet">
+  <style>
+    *{margin:0;padding:0;box-sizing:border-box}
+    body{font-family:'Inter',sans-serif;background:#f7f6f3;color:#1a1a1a;min-height:100vh}
+    .topbar{background:#fff;padding:.6rem 1.2rem;display:flex;align-items:center;gap:.8rem;border-bottom:1px solid rgba(0,0,0,.06);position:sticky;top:0;z-index:10}
+    .topbar h1{font-size:.95rem;font-weight:800;color:#4a7c8a;flex:1}
+    .topbar .user{font-size:.72rem;color:#8a8a8a}
+    .topbar .btn-sm{padding:.3rem .6rem;border:1px solid rgba(0,0,0,.08);border-radius:6px;background:#fff;font-size:.68rem;font-weight:600;cursor:pointer;color:#4a4a4a}
+    .topbar .btn-sm:hover{background:#dae8ec;color:#4a7c8a}
+
+    .wrap{max-width:1000px;margin:0 auto;padding:1rem}
+    .grid{display:grid;grid-template-columns:280px 1fr;gap:1rem;min-height:calc(100vh - 60px)}
+    .sidebar{display:flex;flex-direction:column;gap:.6rem}
+    .main{display:flex;flex-direction:column;gap:.8rem}
+
+    .card{background:#fff;border-radius:10px;padding:.8rem;box-shadow:0 1px 4px rgba(0,0,0,.03);border:1px solid rgba(0,0,0,.04)}
+    .card-h{font-size:.6rem;font-weight:700;color:#4a7c8a;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem}
+
+    .class-item{padding:.5rem;border:1.5px solid rgba(0,0,0,.05);border-radius:7px;cursor:pointer;margin-bottom:.3rem;transition:all .1s}
+    .class-item:hover{border-color:#4a7c8a;background:#f0f6f8}
+    .class-item.active{border-color:#4a7c8a;background:#dae8ec}
+    .class-item h4{font-size:.78rem;font-weight:700}
+    .class-item p{font-size:.62rem;color:#8a8a8a}
+
+    .btn{padding:.4rem .8rem;border:none;border-radius:6px;background:#4a7c8a;color:#fff;font-size:.72rem;font-weight:700;cursor:pointer}
+    .btn:hover{background:#3a6470}
+    .btn-outline{background:transparent;color:#4a7c8a;border:1.5px solid #4a7c8a}
+    .btn-danger{background:#c07a6b}
+
+    table{width:100%;border-collapse:collapse;font-size:.75rem}
+    th{background:#f7f6f3;padding:.4rem .5rem;text-align:left;font-weight:600;font-size:.65rem;color:#8a8a8a}
+    td{padding:.4rem .5rem;border-bottom:1px solid rgba(0,0,0,.03)}
+
+    .module-row{display:flex;align-items:center;gap:.5rem;padding:.4rem .2rem;border-bottom:1px solid rgba(0,0,0,.03)}
+    .module-row:last-child{border:none}
+    .module-name{flex:1;font-size:.75rem;font-weight:600}
+    .module-desc{font-size:.6rem;color:#8a8a8a}
+    .mode-btn{padding:.2rem .5rem;border:1px solid rgba(0,0,0,.08);border-radius:4px;font-size:.6rem;font-weight:600;cursor:pointer;background:#fff}
+    .mode-btn.active{background:#4a7c8a;color:#fff;border-color:#4a7c8a}
+
+    .modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:100}
+    .modal-card{background:#fff;border-radius:12px;padding:1.2rem;max-width:380px;width:90%}
+    .modal-card h3{font-size:.9rem;font-weight:700;margin-bottom:.5rem}
+    .modal-card label{display:block;font-size:.68rem;font-weight:600;margin-top:.5rem;color:#4a4a4a}
+    .modal-card input{width:100%;padding:.4rem .6rem;border:1.5px solid rgba(0,0,0,.1);border-radius:6px;font-size:.78rem;margin-top:.15rem}
+    .hidden{display:none}
+
+    .stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.4rem;margin-bottom:.5rem}
+    .stat{text-align:center;background:#f7f6f3;border-radius:6px;padding:.4rem}
+    .stat .n{font-size:1.1rem;font-weight:800;color:#4a7c8a}
+    .stat .l{font-size:.55rem;color:#8a8a8a}
+
+    @media(max-width:700px){.grid{grid-template-columns:1fr}}
+  </style>
+</head>
+<body>
+
+<div class="topbar">
+  <h1>🌍 GeoGraSim — Lehrkraft</h1>
+  <span class="user" id="user-info"></span>
+  <button class="btn-sm" onclick="logout()">Abmelden</button>
+  <a href="index.html" class="btn-sm">← App</a>
+</div>
+
+<div class="wrap">
+<div class="grid">
+
+  <!-- SIDEBAR: Klassen -->
+  <div class="sidebar">
+    <div class="card">
+      <div class="card-h">Meine Klassen</div>
+      <div id="class-list"></div>
+      <button class="btn" style="width:100%;margin-top:.4rem" onclick="showCreateClass()">+ Neue Klasse</button>
+    </div>
+    <div class="card">
+      <div class="card-h">Handbuch</div>
+      <a href="handbuch.html" style="font-size:.72rem;color:#4a7c8a">📖 Didaktisches Handbuch öffnen</a>
+    </div>
+  </div>
+
+  <!-- MAIN -->
+  <div class="main" id="main-content">
+    <div class="card" style="text-align:center;padding:2rem;color:#8a8a8a">
+      <p>Wähle links eine Klasse aus oder erstelle eine neue.</p>
+    </div>
+  </div>
+
+</div>
+</div>
+
+<!-- Modal: Klasse erstellen -->
+<div class="modal hidden" id="modal-class">
+  <div class="modal-card">
+    <h3 id="modal-class-title">Neue Klasse</h3>
+    <label>Klassenname</label>
+    <input type="text" id="mc-name" placeholder="z.B. 1A">
+    <label>Schuljahr</label>
+    <input type="text" id="mc-year" placeholder="z.B. 2025/26">
+    <div style="display:flex;gap:.4rem;margin-top:.8rem">
+      <button class="btn" onclick="saveClass()">Speichern</button>
+      <button class="btn btn-outline" onclick="hideModal('modal-class')">Abbrechen</button>
+    </div>
+  </div>
+</div>
+
+<!-- Modal: Schueler erstellen -->
+<div class="modal hidden" id="modal-student">
+  <div class="modal-card">
+    <h3>Schüler:in erstellen</h3>
+    <label>Benutzername</label>
+    <input type="text" id="ms-user" placeholder="z.B. max01">
+    <label>Anzeigename (optional)</label>
+    <input type="text" id="ms-name" placeholder="z.B. Max M.">
+    <label>Passwort</label>
+    <input type="text" id="ms-pass" placeholder="mind. 4 Zeichen">
+    <div style="display:flex;gap:.4rem;margin-top:.8rem">
+      <button class="btn" onclick="saveStudent()">Erstellen</button>
+      <button class="btn btn-outline" onclick="hideModal('modal-student')">Abbrechen</button>
+    </div>
+  </div>
+</div>
+
+<!-- Modal: Batch-Schueler -->
+<div class="modal hidden" id="modal-batch">
+  <div class="modal-card">
+    <h3>Mehrere Schüler:innen erstellen</h3>
+    <label>Prefix</label>
+    <input type="text" id="mb-prefix" value="schueler" placeholder="z.B. schueler">
+    <label>Anzahl</label>
+    <input type="number" id="mb-count" value="25" min="1" max="50">
+    <p style="font-size:.65rem;color:#8a8a8a;margin-top:.3rem">Erstellt z.B. schueler01, schueler02, ... mit zufälligen 4-stelligen Passwörtern.</p>
+    <div style="display:flex;gap:.4rem;margin-top:.8rem">
+      <button class="btn" onclick="batchCreate()">Erstellen</button>
+      <button class="btn btn-outline" onclick="hideModal('modal-batch')">Abbrechen</button>
+    </div>
+    <div id="batch-result" style="margin-top:.5rem;font-size:.65rem;max-height:200px;overflow-y:auto"></div>
+  </div>
+</div>
+
+<script>
+var BASE = (window.__GGS__?.baseUrl) || ''
+var currentClassId = null
+
+async function api(endpoint, data) {
+  var opts = data ? {method:'POST',headers:{'Content-Type':'application/json'},credentials:'same-origin',body:JSON.stringify(data)} : {credentials:'same-origin'}
+  var r = await fetch(BASE + '/api/' + endpoint, opts)
+  return await r.json()
+}
+
+// Auth check
+api('auth', {action:'status'}).then(function(r) {
+  if (r.role !== 'teacher') { location.href = 'login.html'; return }
+  document.getElementById('user-info').textContent = r.user?.display_name || 'Lehrkraft'
+  loadClasses()
+})
+
+function logout() { api('auth', {action:'logout'}).then(function() { location.href = 'login.html' }) }
+
+// === KLASSEN ===
+async function loadClasses() {
+  var classes = await api('classes')
+  if (classes.error) return
+  var html = ''
+  classes.forEach(function(c) {
+    html += '<div class="class-item'+(c.id===currentClassId?' active':'')+'" onclick="selectClass('+c.id+')">'
+    html += '<h4>'+c.name+'</h4>'
+    html += '<p>'+c.school_year+' · Code: <strong>'+c.join_code+'</strong> · '+c.student_count+' Schüler</p>'
+    html += '</div>'
+  })
+  document.getElementById('class-list').innerHTML = html || '<p style="font-size:.7rem;color:#aaa">Noch keine Klassen.</p>'
+}
+
+function selectClass(id) {
+  currentClassId = id
+  loadClasses()
+  loadClassDetail(id)
+}
+
+async function loadClassDetail(id) {
+  var students = await api('students?class_id=' + id)
+  var modules = await api('modules?class_id=' + id)
+  if (students.error) students = []
+  if (modules.error) modules = []
+
+  var html = ''
+
+  // Stats
+  html += '<div class="card"><div class="stat-grid">'
+  html += '<div class="stat"><div class="n">'+students.length+'</div><div class="l">Schüler:innen</div></div>'
+  var avgScore = 0; var completions = 0
+  students.forEach(function(s) { if(s.total_score?.avg_score){avgScore+=parseFloat(s.total_score.avg_score);completions+=parseInt(s.total_score.count)} })
+  if(students.length>0) avgScore = Math.round(avgScore/students.length)
+  html += '<div class="stat"><div class="n">'+avgScore+'</div><div class="l">Ø Score</div></div>'
+  html += '<div class="stat"><div class="n">'+completions+'</div><div class="l">Abschlüsse</div></div>'
+  html += '</div></div>'
+
+  // Modulfreigabe
+  html += '<div class="card"><div class="card-h">Module</div>'
+  modules.forEach(function(m) {
+    html += '<div class="module-row">'
+    html += '<div><div class="module-name">'+m.name+'</div><div class="module-desc">'+m.desc+'</div></div>'
+    html += '<button class="mode-btn'+(m.mode==='locked'?' active':'')+'" onclick="setMode('+id+',\''+m.id+'\',\'locked\')">🔒</button>'
+    html += '<button class="mode-btn'+(m.mode==='free'?' active':'')+'" onclick="setMode('+id+',\''+m.id+'\',\'free\')">🆓</button>'
+    html += '<button class="mode-btn'+(m.mode==='teacher_started'?' active':'')+'" onclick="setMode('+id+',\''+m.id+'\',\'teacher_started\')">▶ Start</button>'
+    html += '</div>'
+  })
+  html += '</div>'
+
+  // Schuelerliste
+  html += '<div class="card"><div class="card-h">Schüler:innen</div>'
+  html += '<div style="display:flex;gap:.3rem;margin-bottom:.5rem">'
+  html += '<button class="btn" onclick="showModal(\'modal-student\')">+ Einzeln</button>'
+  html += '<button class="btn btn-outline" onclick="showModal(\'modal-batch\')">+ Mehrere</button>'
+  html += '</div>'
+  if (students.length > 0) {
+    html += '<table><tr><th>Benutzer</th><th>Name</th><th>Letzter Login</th><th>Ø Score</th><th></th></tr>'
+    students.forEach(function(s) {
+      var avg = s.total_score?.avg_score ? Math.round(parseFloat(s.total_score.avg_score)) : '—'
+      var last = s.last_login ? new Date(s.last_login).toLocaleDateString('de-AT') : '—'
+      html += '<tr><td>'+s.username+'</td><td>'+(s.display_name||'—')+'</td><td>'+last+'</td><td>'+avg+'</td>'
+      html += '<td><button class="btn-sm" onclick="deleteStudent('+s.id+')">🗑</button></td></tr>'
+    })
+    html += '</table>'
+  } else {
+    html += '<p style="font-size:.7rem;color:#aaa">Noch keine Schüler:innen in dieser Klasse.</p>'
+  }
+  html += '</div>'
+
+  document.getElementById('main-content').innerHTML = html
+}
+
+// === MODALS ===
+function showModal(id) { document.getElementById(id).classList.remove('hidden') }
+function hideModal(id) { document.getElementById(id).classList.add('hidden') }
+function showCreateClass() { document.getElementById('mc-name').value=''; document.getElementById('mc-year').value=''; showModal('modal-class') }
+
+async function saveClass() {
+  var name = document.getElementById('mc-name').value.trim()
+  var year = document.getElementById('mc-year').value.trim()
+  if (!name) return
+  await api('classes', {action:'create', name:name, schoolYear:year})
+  hideModal('modal-class')
+  loadClasses()
+}
+
+async function saveStudent() {
+  var user = document.getElementById('ms-user').value.trim()
+  var name = document.getElementById('ms-name').value.trim()
+  var pass = document.getElementById('ms-pass').value
+  if (!user || !pass) return
+  var r = await api('students', {action:'create', classId:currentClassId, username:user, displayName:name, password:pass})
+  if (r.error) { alert(r.error); return }
+  hideModal('modal-student')
+  loadClassDetail(currentClassId)
+}
+
+async function batchCreate() {
+  var prefix = document.getElementById('mb-prefix').value.trim() || 'schueler'
+  var count = parseInt(document.getElementById('mb-count').value) || 25
+  var r = await api('students', {action:'create_batch', classId:currentClassId, prefix:prefix, count:count})
+  if (r.error) { alert(r.error); return }
+  // Zugangsdaten anzeigen
+  var html = '<strong>Erstellt! Zugangsdaten (bitte notieren):</strong><br>'
+  html += '<table style="font-size:.6rem"><tr><th>Benutzer</th><th>Passwort</th></tr>'
+  r.created.forEach(function(s) { html += '<tr><td>'+s.username+'</td><td><code>'+s.password+'</code></td></tr>' })
+  html += '</table>'
+  document.getElementById('batch-result').innerHTML = html
+  loadClassDetail(currentClassId)
+}
+
+async function deleteStudent(id) {
+  if (!confirm('Schüler:in wirklich löschen?')) return
+  await api('students', {action:'delete', studentId:id})
+  loadClassDetail(currentClassId)
+}
+
+async function setMode(classId, moduleId, mode) {
+  await api('modules', {action:'set_mode', classId:classId, moduleId:moduleId, mode:mode})
+  loadClassDetail(classId)
+}
+</script>
+</body>
+</html>
diff --git a/App/tile-test.html b/App/tile-test.html
index 559d9c6..1cd6db4 100644
--- a/App/tile-test.html
+++ b/App/tile-test.html
@@ -402,7 +402,7 @@ var emojiTiles = [
     {e:'🏠',x:-0.32,y:-0.3,s:32},{e:'🏡',x:-0.3,y:0,s:30},{e:'🏠',x:-0.32,y:0.28,s:28},
     {e:'🏘️',x:0.32,y:-0.25,s:30},{e:'🏠',x:0.3,y:0.05,s:32},{e:'🏡',x:0.32,y:0.3,s:28}]},
   {id:'e04', label:'Fabrik', stub:'S', emoji:'🏭', size:85},
-  {id:'e05', label:'Spital', stub:'EW', emoji:'🏥', size:75, extra:[{e:'🚑',x:0,y:0.3,s:32}]},
+  {id:'e05', label:'Spital', stub:'EW', emoji:'🏥', size:65, yoff:-0.12, extra:[{e:'🚑',x:0,y:0.3,s:30}]},
   {id:'e06', label:'Feuerwehr', stub:'S', bg:'rgba(200,50,40,0.12)', emojis:[
     {e:'🏠',x:0,y:-0.15,s:60},{e:'🚒',x:-0.2,y:0.22,s:40},{e:'🚒',x:0.2,y:0.22,s:40}]},
   {id:'e07', label:'Polizei', stub:'N', emoji:'🚔', size:45, extra:[{e:'🏢',x:0,y:0.15,s:55}]},
