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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f9;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    margin-top: 15px;
    padding: 20px;
    flex-direction: column;
}

h1 {
    color: #333;
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: bold;
}

div {
    margin-bottom: 20px;
}

label {
    font-size: 1.1rem;
    font-weight: bold;
}

input[type="number"], .checkbox-input input {
    padding: 10px;
    border-radius: 5px;
    border: 2px solid #ddd;
    background-color: #fff;
    color: #333;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    margin-top: 5px;
    width: 100%;
}

input[type="number"] {
    width: 100px !important;
}


input[type="number"]:focus, .checkbox-input input:focus {
    border-color: #007bff;
    outline: none;
}

.checkbox-input {
    display: flex;
    flex-direction: column;
    align-items: flex-start; 
    padding-left: 0;
    margin-top: 10px;
}

.checkbox-input input {
    display: none;
}

.checkbox-input input + label {
    position: relative;
    padding-left: 40px;
    cursor: pointer;
    display: inline-block;
    font-size: 1rem;
    line-height: 20px;
    color: #333;
    transition: color 0.3s ease;
    margin-bottom: 10px; 
}

.checkbox-input input + label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid #007bff;
    background-color: #fff;
    transition: all 0.3s ease;
}

.checkbox-input input:checked + label::before {
    background-color: #007bff;
    border-color: #007bff;
}

.checkbox-input input:checked + label::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #fff;
}

button {
    padding: 15px 30px;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
    max-width: 300px;
    margin-top: 20px;
}

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

.password-text {
    background-color: white;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    font-size: 1.2rem;
    color: black;
    margin-top: 40px;
    font-weight: bold;
    display: none;
}

.copy-btn {
    padding: 5px 10px;
    background-color: #28a745;
    border: none;
    border-radius: 5px;
    color: #fff;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
    display: none;
}

.copy-btn:hover {
    background-color: #218838;
}



@media (min-width: 600px) {
    body {
        padding: 40px;
    }

    .checkbox-input {
        padding-left: 20px;
    }

    h1 {
        font-size: 3rem;
    }

    input[type="number"], button {
        width: auto;
    }
}