body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f4f6f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-container {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  width: 100%;
  max-width: 320px;
  text-align: center;
}

h2 {
  margin-bottom: 1rem;
  color: #333;
}

.login-form input {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

.login-form button {
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
}

.login-form button:hover {
  background: #0056b3;
}

.alert.error {
  background: #f8d7da;
  color: #721c24;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 1rem;
  border: 1px solid #f5c6cb;
}

.captcha-box {
  margin: 10px 0;
}

.captcha-img {
  font-size: 1.4rem;
  font-weight: bold;
  letter-spacing: 4px;
  background: #f1f1f1;
  padding: 8px;
  display: inline-block;
  border-radius: 4px;
  margin-bottom: 5px;
}

.captcha-box img {
  display: block;
  margin: 0 auto 5px;
}

.password-wrapper {
  position: relative;
  width: 100%;
}

.password-wrapper input {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

.toggle-password {
  position: absolute;
  right: -11px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 1.2rem;
  color: #888;
}

.toggle-password:hover {
  color: #333;
}