body {
  margin: 0;
  padding: 0;
  background: #0d1117;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  color: #eee;
}

.login-container {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,0,0,0.4);
  text-align: center;
  width: 100%;
  max-width: 400px;
}

.logo {
  width: 300px;
  margin-bottom: 74px;
}

h2 {
  margin-bottom: 20px;
  color: #3f4093;
}

input[type="text"],
input[type="password"] {
  width: 93%;
  padding: 12px;
  margin-bottom: 16px;
  border: none;
  border-radius: 8px;
  background: #21262d;
  color: #fff;
  font-size: 16px;
}

button {
  width: 100%;
  padding: 12px;
  background: #238636;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #2ea043;
}

footer {
  margin-top: 20px;
  font-size: 14px;
  color: #666;
}