* { font-family: 'IBM Plex Sans', sans-serif; }

html, body {
    margin: 0;
    padding: 0;
    background: #ff572d;
    display: flex;
    flex-direction: column;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    touch-action: manipulation;
}

#wrapper {
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1 {
    background: #ff572d;
    color: white;
    padding: 15px 0;
    margin: 0;
    text-align: center;
    font-size: 1.8rem;
}

#pinDisplay {
    text-align: center;
    padding: 20px 20px;
    font-size: 1.6rem;
    color: #232325;
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 640px) {
    #pinDisplay {
        min-height: 3.8rem;
    }
}

.keypad {
    width: 100%;
    max-width: 400px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 0 20px;
    box-sizing: border-box;
}

.keypad-buttons {
    width: 100%;
    max-width: 400px;
    margin: auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.btn {
    padding: 20px 0;
    font-size: 1.6rem;
    border: none;
    background: #dedede;
    color: #232325;
    border-radius: 6px;
    cursor: pointer;
}

.btn:active {
    background: #cfcfcf;
}

.btn-reset {
    background: #ff572d;
    color: white;
}

.btn-back {
    background: #ff572d;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-back svg {
    height: 1.6rem;
    width: 1.6rem;
}

.submit-btn {
    margin: auto;
    width: 100%;
    max-width: 400px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    display: block;
}

.submit-btn .icon {
    display: block;
    width: 100%;
    height: auto;
}

@media (max-width: 640px) {
    .submit-btn .icon {
        max-width: 280px;
        margin: auto;
    }
}