* {
    box-sizing: border-box;
}

body {
    margin: 0;

    min-height: 100vh;

    display: flex;

    justify-content: center;

    align-items: center;

    font-family: sans-serif;

    background: #e8f5e9;

}

#login-screen,
#totp-screen {
    width: min(500px, 90vw);

    text-align: center;
}

input {
    width: 100%;

    padding: 12px;

    font-size: 18px;
}

button {
    width: 100%;

    padding: 12px;

    margin-top: 10px;

    font-size: 18px;
}

#code {
    font-size: clamp(4rem, 16vw, 8rem);

    font-weight: bold;

    letter-spacing: 0.15em;
}

#timer {
    margin-top: 20px;

    font-size: 24px;
}

.progress-container {
    width: 100%;

    height: 16px;

    margin-top: 20px;

    border-radius: 999px;

    overflow: hidden;

    background: #d9d9d9;
}

#progress {
    height: 100%;

    width: 100%;

    background: #000;

    transition: width 1s linear;
}