body {
  font-family: Arial, sans-serif;
  background: #ecf0f1;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 5;
  padding: 20px;
}

.login-container {
  background: white;
  padding: 5px 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  text-align: center;
  width: 100%;
  max-width: 320px;
  box-sizing: border-box;
}

.login-logo {
  width: 120px;
  height: auto;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.login-container h2 {
  margin-bottom: 20px;
  color: #2c3e50;
}

.login-container input {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid #bdc3c7;
  border-radius: 6px;
  font-size: 14px;
  box-sizing: border-box;
}

.login-container button,
.btn-back {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  text-decoration: none;
  display: block;
  box-sizing: border-box;
}

.login-container button {
  background-color: #2980b9;
  color: white;
}

.login-container button:hover {
  background-color: #1c5985;
}

.btn-back {
  background-color: #c0392b;
  color: white;
  margin-top: 12px;
  text-align: center;
}

.btn-back:hover {
  background-color: #a93226;
}

.login-container .error {
  color: red;
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-text {
  font-size: 12px;
  color: #888;
  margin-top: 15px;
}