body {
    font-family: Arial, sans-serif;
    background: #f0f4f8;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1 {
    margin-bottom: 1.5rem;
    color: #333;
}

.input-group {
    margin-bottom: 1rem;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.input-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 8px;
}

button {
    padding: 0.7rem 1.5rem;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.result-box {
    margin-top: 1.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    color: #444;
}