* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #121212;
  color: white;
}

.background {
  background: url('https://framerusercontent.com/images/examples-background.webp') center center/cover no-repeat;
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 10, 40, 0.6);
  backdrop-filter: blur(10px);
  z-index: -1;
}

.login-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 30, 0.7);
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 0 20px rgba(0,0,0,0.3);
  text-align: center;
  width: 300px;
}

h1 {
  margin-bottom: 30px;
  font-size: 24px;
}

.btn {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
  color: white;
  transition: background 0.3s ease;
  display: inline-block;
  text-align: center;
}

.google {
  background-color: #4285F4;
}

.google:hover {
  background-color: #3367D6;
}

.email {
  background: #FF0000;
}

.email:hover {
  background: #cc0000;
}

.guest {
  background: #1DB954;
}

.guest:hover {
  background: #169c43;
}