<?php
session_start();
if(isset($_SESSION['user'])){ header('Location: account.php'); exit; }
$err = $_GET['err'] ?? '';
?>
<!doctype html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Sign Up</title><link rel="stylesheet" href="assets/css/style.css"></head><body>
<header class="topbar"><div class="brand">GameHost</div></header>
<main class="main"><h2>Create Account</h2>
<?php if($err): ?><div class="card"><strong style="color:#ffbcbc;"><?=$err?></strong></div><?php endif; ?>
<form method="POST" action="api.php?action=register" class="card">
  <label>Username<input name="username" required></label>
  <label>Password<input name="password" type="password" required></label>
  <button type="submit">Create</button>
  <p>Already have an account? <a href="login.php">Login</a></p>
</form></main>
</body></html>