body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: black;
  color: white;
}

.container {
  text-align: center;
  margin-top: 100px;
}

.open-btn {
  padding: 12px 20px;
  background: white;
  color: black;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

/* POPUP */
.popup {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
}

.popup-box {
  background: white;
  color: black;
  width: 350px;
  margin: 80px auto;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
}

input {
  width: 90%;
  padding: 10px;
  margin: 8px 0;
}

button {
  padding: 10px;
  margin: 5px;
  cursor: pointer;
}

.send-btn {
  background: black;
  color: white;
}

.close-btn {
  background: red;
  color: white;
}

.profile {
  margin: 10px 0;
  padding: 10px;
  border: 1px solid #ddd;
}