body {
    font-family: sans-serif;
    max-width: 500px;
    margin: 100px auto;
    text-align: center;
    color: white;
}

.btn {
    display: block;
    margin: 15px auto;
    padding: 12px 20px;
    background: #6a4df5;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
}

.code-input {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
}

.code-box {
    width: 38px;
    height: 48px;
    font-size: 26px;
    text-align: center;
    border: 2px solid #888;
    border-radius: 6px;
    background: #222;
    color: white;
}

.code-box:focus {
    border-color: #6a5acd;
    outline: none;
}

.status {
    margin-top: 10px;
    font-size: 18px;
}

.text-result {
    background: #222;
    padding: 15px;
    border-radius: 8px;
    margin-top: 10px;
    white-space: pre-wrap;
}