body {
  font-family: sans-serif;
  background: #111;
  color: #eee;
  max-width: 600px;
  margin: 30px auto;
}
h1 {
  color: #79f2a6;
}
form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
input, select, button {
  padding: 10px;
  font-size: 1rem;
  border: none;
  border-radius: 4px;
}
button {
  background: #79f2a6;
  color: #000;
  font-weight: bold;
  cursor: pointer;
}

.loader {
  border: 8px solid #ccc;
  border-top: 8px solid #79f2a6;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1.2s linear infinite;
  margin: 0 auto;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}