body {
    margin: 0;
    height: 100vh;

    display: flex;
    justify-content: center; /* horizontal */
    align-items: center;     /* vertical */

    background: var(--bg-color);
    color: var(--text-color);
}

/* all elements cotainer */
.body-container {
    display: flex;
    justify-content: center;
    width: min(90%, 1200px);
}

/* login form */
form {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(90%, 400px);
    border: 2px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius);
    background-color: var(--form-bg);
}

/* username and password inputs' label */
label {
    width: 100%;
}

/* username and password inputs */
input {
    width: 100%;
    height: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* username, password and login button */
form div {
    padding: 10px;
    width: min(90%, 300px);
}

/* login button */
button {
    width: 100%;
    height: 32px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: var(--radius);
}

/* smartphone view */
/* @media (max-width: 768px) {

} */