body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #6e8efb, #a777e3);
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.card {
  background: #ffffff;
  border-radius: 20px;
  padding: 2rem;
  max-width: 500px;
  width: 100%;
  box-shadow: 0 15px 25px rgba(0,0,0,0.1);
}

h2 {
  text-align: center;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #333;
}

label {
  font-weight: 600;
  margin-top: 1rem;
  display: block;
}

select, input, button {
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 10px;
  font-size: 1rem;
  outline: none;
  transition: 0.2s;
}

input:focus, select:focus {
  border-color: #6e8efb;
  box-shadow: 0 0 0 3px rgba(110, 142, 251, 0.2);
}

.instructions {
  background-color: #f7f9fc;
  padding: 1rem;
  border-radius: 10px;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: #333;
  display: none;
}

.highlight {
  font-weight: bold;
  color: #000;
}

.copy-btn {
  margin-top: 0.5rem;
  background: #6e8efb;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
}

.copy-btn:hover {
  background: #5b7bfa;
}

.error, .success {
  margin-top: 1rem;
  font-weight: 600;
}

.error {
  color: #e74c3c;
}

.success {
  color: #27ae60;
}