body {
  margin: 0;
  padding: 0;
  background: #111;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  color: #eee;
  box-sizing: border-box;
}

.login-box {
  background: #222;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
  text-align: center;
  width: 100%;
  max-width: 320px;
  margin: 20px;
  box-sizing: border-box;
}

.login-box img {
  width: 140px;
  margin-bottom: 20px;
}

.login-box h2 {
  margin-bottom: 20px;
  font-weight: normal;
  color: #f0c040;
  font-size: 20px;
}

.login-box input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 6px;
  background: #333;
  color: #fff;
  font-size: 16px;
  box-sizing: border-box;
}

.login-box button {
  width: 100%;
  padding: 12px;
  background: #f0c040;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s;
  box-sizing: border-box;
}

.login-box button:hover {
  background: #e0b030;
}