body {
  font-family: Arial, sans-serif;
  background: #eef4ff;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.container {
  background: #fff;
  padding: 20px;
  width: 100%;
  max-width: 420px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

h2 {
  text-align: center;
  margin-bottom: 15px;
}

label {
  font-weight: bold;
  margin-top: 10px;
  display: block;
}

input, select {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

.btns {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

button {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
}

button:nth-child(1) { background: #007bff; }
.reset { background: #dc3545; }
.print { background: #28a745; }

#result {
  margin-top: 15px;
  padding: 10px;
  background: #f2f7ff;
  border-radius: 8px;
  font-size: 14px;
}