.avatar-thumb {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
    border: 3px solid transparent;
    transition: border-color 0.15s ease;
}

.avatar-thumb.selected,
.avatar-radio-input:checked + .avatar-thumb {
    border-color: var(--bs-primary, #007bff);
}