body {
  background: #f4f6f9;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}
.login-container {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  text-align: center;
}
.login-logo {
  font-size: 28px;
  font-weight: 700;
  color: #2d353c;
  margin-bottom: 5px;
}
.login-logo .badge {
  font-size: 12px;
  vertical-align: middle;
  position: relative;
  top: -3px;
}
.login-subtitle {
  color: #8c9094;
  margin-bottom: 30px;
  font-size: 14px;
}
.form-group {
  margin-bottom: 20px;
  text-align: left;
}
.form-group label {
  font-weight: 600;
  color: #2d353c;
  margin-bottom: 5px;
  display: block;
}
.form-control {
  padding: 12px 15px;
  border-radius: 6px;
  border: 1px solid #d3d8de;
  background: #f8f9fa;
}
.form-control:focus {
  border-color: #00acac;
  box-shadow: 0 0 0 0.25rem rgba(0,172,172,0.25);
  background: #fff;
}
.btn-login {
  width: 100%;
  padding: 12px;
  font-weight: 600;
  font-size: 16px;
  background: #00acac;
  border: none;
  border-radius: 6px;
  color: white;
  transition: all 0.2s;
}
.btn-login:hover {
  background: #008a8a;
}
.btn-login:disabled {
  background: #6dc3c3;
  cursor: not-allowed;
}
.alert-msg {
  display: none;
  margin-bottom: 20px;
  padding: 10px;
  border-radius: 6px;
  font-size: 14px;
}
.alert-error {
  background: #f8d7da;
  color: #842029;
  border: 1px solid #f5c2c7;
}