body {
  font-family: Arial, sans-serif;
  background: #f0f4f7;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 15px;
  width: 650px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

label {
  font-weight: bold;
}

select {
  margin: 10px 0 20px 0;
  padding: 5px;
  width: 100%;
}

.subject {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.subject input {
  width: 60%;
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

.subject label {
  width: 35%;
  text-align: left;
}

button {
  padding: 10px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  background: #28a745;
  color: white;
  width: 100%;
  margin-top: 10px;
}

button:hover {
  background: #218838;
}

#resultCard {
  margin-top: 20px;
  padding: 20px;
  border-radius: 12px;
  background: #007bff;
  color: white;
}

.hidden { display: none; }