button {
  background-color: #8e75ff;
  border: none;
  color: white;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s;
}
button:hover {
  background-color: #7b65e0;
}
.sidebar-box {
  background-color: #1e1a42;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(142, 117, 255, 0.15);
}
.referral-banner {
  background-color: #8e75ff;
  color: white;
  text-align: center;
  padding: 1rem;
  font-weight: bold;
}
.premium-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.premium-modal-content {
  background-color: #1e1a42;
  padding: 2rem;
  border-radius: 10px;
  color: white;
  max-width: 400px;
  width: 90%;
}
.premium-features {
  margin: 1rem 0;
  list-style: none;
  padding-left: 1rem;
}