diff --git a/public/app.js b/public/app.js
index b76e83d..d8e1faf 100644
--- a/public/app.js
+++ b/public/app.js
@@ -114,6 +114,8 @@ async function initLoginPage() {
     if (btn.disabled) return
     errorEl.classList.add('hidden')
     btn.disabled = true
+    btn.classList.add('is-loading')
+    btn.setAttribute('aria-busy', 'true')
     let cooldownActive = false
     try {
       await api('/api/auth/login', {
@@ -132,6 +134,8 @@ async function initLoginPage() {
         await applyCooldown(err.retryAfterSeconds || 900)
       }
     } finally {
+      btn.classList.remove('is-loading')
+      btn.removeAttribute('aria-busy')
       if (!cooldownActive) btn.disabled = false
     }
   })
diff --git a/public/login.css b/public/login.css
new file mode 100644
index 0000000..63f12ee
--- /dev/null
+++ b/public/login.css
@@ -0,0 +1,267 @@
+/* Login-Seite – angelehnt an Fandom Sign-in (Drawer + AuthForm) */
+
+.login-page {
+  --primary: #9d3dfe;
+  --error: #f9191d;
+  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
+  --input-size: 50px;
+  --input-gap: 10px;
+  --input-radius: 20px;
+  min-height: 100svh;
+  margin: 0;
+  background: #0a0a0a;
+  color: #fff;
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  overflow-x: hidden;
+}
+
+@media (min-width: 62em) {
+  .login-page {
+    --input-size: 64px;
+    --input-gap: 5px;
+    --input-radius: 25px;
+  }
+}
+
+.login-page::before {
+  content: '';
+  position: fixed;
+  inset: 0;
+  z-index: 0;
+  pointer-events: none;
+  background:
+    radial-gradient(circle at 50% 45%, rgba(157, 61, 254, 0.35) 0%, transparent 55%),
+    radial-gradient(ellipse 80% 50% at 50% 50%, #1a1030 0%, #0a0a0a 70%);
+}
+
+.login-bg {
+  position: fixed;
+  inset: 0;
+  z-index: 0;
+  background: #0a0a0a;
+}
+
+.login-header {
+  position: fixed;
+  top: 0;
+  left: 0;
+  z-index: 2;
+  width: 100%;
+  padding: 24px;
+  display: flex;
+  align-items: center;
+  pointer-events: none;
+}
+
+@media (min-width: 62em) {
+  .login-header {
+    padding: 42px 50px;
+  }
+}
+
+.login-logo {
+  pointer-events: auto;
+  text-decoration: none;
+  color: #fff;
+  font-size: 1.125rem;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  transition: color 0.25s var(--ease-out);
+}
+
+.login-logo:hover,
+.login-logo:focus-visible {
+  color: var(--primary);
+}
+
+.login-main {
+  position: relative;
+  z-index: 1;
+  min-height: 100svh;
+  display: flex;
+  justify-content: flex-end;
+  align-items: stretch;
+}
+
+.login-panel {
+  width: 100%;
+  max-width: 730px;
+  min-height: 100svh;
+  padding: 60px 40px;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  box-sizing: border-box;
+}
+
+@media (min-width: 62em) {
+  .login-panel {
+    padding: 164px 40px;
+  }
+}
+
+.AuthForm {
+  width: 100%;
+  max-width: 420px;
+  margin: 0 auto;
+}
+
+.AuthForm .login-section {
+  margin-bottom: 0;
+}
+
+.auth-label {
+  text-align: center;
+  margin: 0 0 50px;
+  font-size: 0.8125rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.1em;
+  line-height: 1;
+  color: #fff;
+}
+
+@media (min-width: 62em) {
+  .auth-label {
+    font-size: 1rem;
+  }
+}
+
+.login-form {
+  display: flex;
+  flex-direction: column;
+  gap: var(--input-gap);
+}
+
+.auth-input {
+  color: #fff;
+  background-color: rgba(255, 255, 255, 0.25);
+  padding-inline: 40px;
+  backdrop-filter: blur(10px);
+  -webkit-backdrop-filter: blur(10px);
+  border-radius: var(--input-radius);
+  width: 100%;
+  height: var(--input-size);
+  border: none;
+  margin: 0;
+  box-sizing: border-box;
+  font-size: 1rem;
+  font-family: inherit;
+}
+
+.auth-input::placeholder {
+  color: #fff;
+  opacity: 0.5;
+}
+
+.auth-input:focus {
+  outline: 2px solid rgba(157, 61, 254, 0.6);
+  outline-offset: 2px;
+}
+
+.auth-input.invalid {
+  border: 2px solid var(--error);
+}
+
+.login-form .error {
+  text-align: center;
+  margin: 0;
+  font-size: 0.875rem;
+}
+
+.auth-button {
+  width: 100%;
+  height: var(--input-size);
+  margin-top: var(--input-gap);
+  border: none;
+  border-radius: 32px;
+  background: #fff;
+  color: #1c1c1c;
+  font-size: 1rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  transition:
+    color 0.25s var(--ease-out),
+    background-color 0.25s var(--ease-out),
+    transform 0.25s var(--ease-out);
+}
+
+.auth-button svg {
+  width: 12px;
+  height: 12px;
+  flex-shrink: 0;
+}
+
+.auth-button:hover:not(:disabled) {
+  background: #1c1c1c;
+  color: #fff;
+}
+
+.auth-button:active:not(:disabled) {
+  transform: scale(0.98);
+}
+
+.auth-button:disabled {
+  opacity: 0.65;
+  cursor: not-allowed;
+}
+
+.auth-button.is-loading .button-label {
+  opacity: 0;
+}
+
+.auth-button .loading-spinner {
+  display: none;
+  width: 22px;
+  height: 22px;
+}
+
+.auth-button.is-loading .loading-spinner {
+  display: block;
+  position: absolute;
+}
+
+.auth-button {
+  position: relative;
+}
+
+.loading-spinner {
+  animation: login-spin 1s linear infinite;
+}
+
+@keyframes login-spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.login-hint {
+  text-align: center;
+  margin: 50px 0 0;
+  font-size: 0.875rem;
+  line-height: 1.5;
+  color: rgba(255, 255, 255, 0.55);
+  max-width: 420px;
+  margin-inline: auto;
+}
+
+.login-page .hidden {
+  display: none !important;
+}
+
+@media (max-width: 48em) {
+  .login-main {
+    justify-content: center;
+  }
+
+  .login-panel {
+    max-width: none;
+    padding: 100px 24px 60px;
+  }
+}
diff --git a/public/login.html b/public/login.html
index e33cb1a..e03c4b6 100644
--- a/public/login.html
+++ b/public/login.html
@@ -4,23 +4,58 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Anmelden – Webklar Kundenbereich</title>
-  <link rel="stylesheet" href="/style.css">
+  <link rel="stylesheet" href="/login.css">
 </head>
-<body>
-  <header><h1>Webklar Kundenbereich</h1></header>
-  <main>
-    <form id="login-form" class="card">
-      <label>E-Mail
-        <input type="email" name="email" id="email" required autocomplete="username">
-      </label>
-      <label>Passwort
-        <input type="password" name="password" id="password" required autocomplete="current-password">
-      </label>
-      <p id="login-error" class="error hidden"></p>
-      <button type="submit" id="login-btn">Anmelden</button>
-    </form>
-    <p class="muted">Zugangsdaten erhältst du von Webklar. Passwortänderungen erfolgen über das Ticketsystem.</p>
+<body class="login-page">
+  <div class="login-bg" aria-hidden="true"></div>
+
+  <header class="login-header">
+    <a class="login-logo" href="/login.html">Webklar</a>
+  </header>
+
+  <main class="login-main">
+    <div class="login-panel">
+      <div class="AuthForm">
+        <div class="login-section">
+          <p class="auth-label">Anmelden</p>
+          <form id="login-form" class="login-form" novalidate>
+            <input
+              class="auth-input"
+              type="email"
+              name="email"
+              id="email"
+              placeholder="E-Mail"
+              required
+              autocomplete="username"
+            >
+            <input
+              class="auth-input"
+              type="password"
+              name="password"
+              id="password"
+              placeholder="Passwort"
+              required
+              autocomplete="current-password"
+            >
+            <p id="login-error" class="error hidden"></p>
+            <button type="submit" id="login-btn" class="auth-button login-button">
+              <span class="button-label">Anmelden</span>
+              <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 11 10" aria-hidden="true">
+                <path fill="currentColor" d="m4.56 8.352 1.824-1.84q.224-.225.144-.4-.064-.192-.384-.192H0V3.76h6.128q.32 0 .4-.176.08-.192-.144-.416l-1.84-1.84L5.84 0l4.848 4.848L5.856 9.68z"></path>
+              </svg>
+              <svg class="loading-spinner" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" aria-hidden="true">
+                <path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 12a9 9 0 1 1-6.219-8.56"></path>
+              </svg>
+            </button>
+          </form>
+        </div>
+        <p class="login-hint">
+          Zugangsdaten erhältst du von Webklar. Passwortänderungen erfolgen über das Ticketsystem.
+        </p>
+      </div>
+    </div>
   </main>
+
   <script src="/app.js"></script>
   <script>
     initLoginPage();
diff --git a/server/index.js b/server/index.js
index ddd61ad..9bcf4b4 100644
--- a/server/index.js
+++ b/server/index.js
@@ -62,7 +62,7 @@ const server = app.listen(config.port, () => {
 server.on('error', (err) => {
   if (err.code === 'EADDRINUSE') {
     console.error(
-      `[server] Port ${config.port} ist bereits belegt. Alten Prozess beenden: lsof -i :${config.port} dann kill <PID>, oder PORT=3001 in .env setzen.`
+      `[server] Port ${config.port} ist bereits belegt. Windows: netstat -ano | findstr :${config.port} → taskkill /PID <PID> /F. Oder in .env einen anderen PORT setzen (z. B. PORT=3002).`
     )
     process.exit(1)
   }