body, html {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  height: 100%;
  background-color: #0f2027;
  color: #fff;
  overflow: hidden;
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.login-box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 0 20px rgba(0,0,0,0.3);
  text-align: center;
}

.login-box h2 {
  margin-bottom: 20px;
}

.login-box input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 8px;
  font-size: 16px;
}

.login-box button {
  width: 100%;
  padding: 12px;
  background: #00c6ff;
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

.login-box button:hover {
  background: #0072ff;
}