body { font-family: Arial, sans-serif; background: #f9f9f9; margin: 0; padding: 0; display: flex; justify-content: center; align-items: center; height: 100vh; }
.form-box { background: #fff; padding: 5px 20px 20px 20px; border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.1); width: 280px; }
h2 { margin-bottom: 20px; }
input[type=text], input[type=password] { width: 90%; padding: 10px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 4px; font-size: 14px; }
.btn { width: 100%; padding: 10px; background: #1a1a1a; border: none; color: white; font-size: 16px; cursor: pointer; border-radius: 4px; }
.error { color: red; margin-bottom: 15px; height:23px;}
.link { margin-top: 10px; text-align: center; }
.link a { color: #1a1a1a; text-decoration: none; }
.link a:hover { text-decoration: underline; }