body { font-family: Arial, sans-serif; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; background: #f5f5f5; }
.login-box { background: white; padding: 2em; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); min-width: 320px; }
.login-box h2 { margin-top: 0; }
.login-box input { width: 100%; padding: 8px; margin: 6px 0; box-sizing: border-box; }
.login-box button { width: 100%; padding: 10px; margin-top: 10px; background: #0066cc; color: white; border: none; border-radius: 4px; cursor: pointer; }
.login-box button:hover { background: #0055aa; }
.error { color: red; display: none; margin-top: 8px; }
.info { color: #666; margin-top: 8px; }