.poi {
    pointer-events: none
}

.poi__item {
    position: absolute;
    pointer-events: auto
}

.poi__btn {
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    --size: 32px;
    background-color: var(--color-accent);
    box-shadow: var(--inner-glow-top), var(--shadow-sm);
    cursor: pointer;
    transition: 0.2s;
    padding-top: var(--btn-padding-y, 0.5em);
    padding-bottom: var(--btn-padding-y, 0.5em);
    padding-left: var(--btn-padding-x, 0.75em);
    padding-right: var(--btn-padding-x, 0.75em);
    border-radius: var(--btn-radius, 0.25em);
}

.poi__btn::after {
    /* pulse ring */
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-radius: inherit;
    pointer-events: none;
    box-shadow: inset 0 0 1px 1px var(--color-accent);
    animation: poi-pulse 2s infinite
}

.poi__btn .icon {
    color: var(--color-white);
    /* icon color */
    --size: 12px;
    transition: transform 0.3s var(--ease-out-back)
}

.poi__btn:hover .icon {
    transform: scale(1.1)
}

.poi__item--visited button {
    /* style of clicked button */
    background-color: hsla(var(--color-black-h), var(--color-black-s), var(--color-black-l), 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px)
}

.poi__item--visited button::after {
    display: none
}

@keyframes poi-pulse {
    0% {
        transform: scale(1);
        opacity: 1
    }

    50% {
        opacity: 1
    }

    100% {
        transform: scale(1.6);
        opacity: 0
    }
}