html,
body {
    font-family: Helvetica;
    height: 100%;
    margin: 0;
    padding: 0;

    display: flex;
    justify-content: center;
    align-items: center;
}

body {
    background: url("/assets/images/background.jpg") center / cover no-repeat fixed;
    color: #ffffff;
}

.parent {
    width: 80%;
    max-width: 420px;
    padding: 20px;

    background-color: rgba(20, 20, 20, 0.63);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.heading h1 {
    text-align: center;
    margin-bottom: 20px;
}

.heading p {
    line-height: 0.2;
    text-align: center;
}

.credentials {
    text-align: center;
    margin-top: 20px;
}

.usr,
.pwd {
    width: 100%;
    background: rgba(40, 40, 40, 0.8);
    color: #fff;

    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;

    padding: 12px 1px;
    margin-top: 10px;

    font-size: 14px;
    text-align: center;
    outline: none;

    transition: border-color 0.2s ease, background 0.2s ease;
}

.usr::placeholder,
.pwd::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.usr:hover,
.pwd:hover {
    background: rgba(50, 50, 50, 0.9);
}

.usr:focus,
.pwd:focus {
    background: rgba(55, 55, 55, 1);
    border-color: #474747;
}

.login-btn {
    display: block;
    margin: 20px auto;
    padding: 12px 70px;

    font-size: 16px;
    font-weight: 600;
    color: #ffffff;

    background: rgba(58, 58, 58, 0.281);
    border: none;
    border-radius: 6px;

    cursor: pointer;
    transition: background 0.2s ease;
}

.login-btn:hover {
    background-color: #707375;
}

.login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.status {
    text-align: center;
    margin-top: 10px;
    font-size: 14px;
    min-height: 20px;
}

.status.error {
    color: #fd0909;
}

.status.success {
    color: #08ce08;
}