iframe {
    width: 100%;
    height: 100%;
}

html,body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    margin: 0;
    background-color: var(--background);
}

h1 {
    color: var(--text);
}

p {
    color: var(--text);
    font-size: 1.2rem;
}

form {
    background-color: var(--form-background);
    padding: 1rem;
    border-radius: 0.6rem;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.2);
    max-width: 25rem;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input[type="number"], input[type="submit"] {
    padding: 0.6rem;
    border: 0.1rem solid var(--primary);
    border-radius: 0.3rem;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}

input[type="number"]:focus {
    border-color: var(--secondary);
    outline: none;
}

input[type="submit"] {
    background-color: var(--button);
    color: var(--button-text);
    cursor: pointer;
    border: none;
    border-radius: 0.3rem;
    padding: 0.6rem 1rem;
    font-size: 1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

input[type="submit"]:hover {
    background-color: var(--button-hover);
    color: var(--button-text);
}

.active-message {
    background-color: var(--success);
    color: var(--success-text);
    text-align: center;
    padding: 1rem;
    border-radius: 0.6rem;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.2);
    max-width: 37rem;
}

.inactive-message {
    background-color: var(--unsuccessful);
    color: var(--unsuccessful-text);
    text-align: center;
    padding: 1rem;
    border-radius: 0.6rem;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.2);
    max-width: 37rem;
}

@media (max-width: 768px) {
    body {
        height: auto;
    }
    h1 {
        padding-top: 1rem;
        font-size: 2rem;
        margin: 0;
    }

    p {
        font-size: 1rem;
        margin: 1rem;
    }

    form {
        padding: 0.8rem;
        max-width: 90%;
        font-size: 0.8rem;
        gap: 1rem;
    }


    .active-message, .inactive-message {
        padding-bottom: 1rem;
        margin-bottom: 1rem ;
        font-size: 1rem;
    }
}