body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9fafb;
}
.container {
  max-width: 700px;
  margin: auto;
  padding: 20px;
  background: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  margin-top: 40px;
  border-radius: 8px;
}
h2 {
  text-align: center;
  color: #111827;
}
input, select, button {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  margin-bottom: 20px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
}
button {
  background-color: #4f46e5;
  color: white;
  border: none;
  cursor: pointer;
}
button:disabled {
  background-color: #9ca3af;
}
.progress {
  margin-bottom: 20px;
  font-weight: bold;
  color: #4b5563;
}
.hidden { display: none; }