body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  padding: 20px;
  text-align: center;
}

h1 {
  color: #333;
  margin-bottom: 20px;
}

.login-container {
  background: #fff;
  display: inline-block;
  padding: 30px 50px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

input[type="password"] {
  padding: 10px;
  width: 200px;
  margin-bottom: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  padding: 10px 20px;
  background: #0077cc;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #005fa3;
}

.error-msg {
  color: red;
  margin-top: 10px;
}

.chart-container {
  width: 90%;
  max-width: 800px;
  margin: 40px auto;
}