.pin-wrapper {
    gap: 0.5rem;
}

.pin-box {
    width: 2.2rem;        /* small, uniform squares */
    height: 2.5rem;
    font-size: 1.4rem;    /* visually clear */
    font-weight: bold;
    border: 2px solid var(--white);
    border-radius: 6px;
}

.pin-box:focus {
    border-color: var(--pixteal);
    outline: none;
    box-shadow: 0 0 4px var(--pixteal);
}