* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.container {
  width: 100%;
  max-width: 400px;
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  text-align: center;
}

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

input {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  width: 100%;
  padding: 12px;
  margin-top: 1.5rem;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background: #0056b3;
}

.dropdown {
  position: relative;
  z-index: 10;
  background: #fff;
  border: 1px solid #ccc;
  max-height: 150px;
  overflow-y: auto;
  margin-top: 5px;
  border-radius: 4px;
}

.dropdown div {
  padding: 8px;
  cursor: pointer;
}

.dropdown div:hover {
  background: #f0f0f0;
}

#result {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  text-align: center;
}