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

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    background: white;
    padding: 20px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

label {
    font-size: 14px;
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    margin: 10px 5px;
    border: none;
    border-radius: 5px;
    background-color: #28a745;
    color: white;
    cursor: pointer;
    font-size: 14px;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#result {
    margin-top: 20px;
    font-size: 16px;
    white-space: pre-wrap;
}

.footer {
    margin-top: 20px;
    font-size: 12px;
}