#event-list {
    max-height: 60vh;
    overflow: auto;
    scrollbar-width: thin;
    scrollbar-color: black #ddd;
}

#event-list::-webkit-scrollbar {
    width: 0.25em;
    height: 0.25em;
}

#event-list::-webkit-scrollbar-track {
    background: #ddd;
}

#event-list::-webkit-scrollbar-thumb {
    background: black;
}

.events {
    display: grid;
    grid-auto-rows: var(--cell-height);
    grid-template-columns: repeat(auto-fit, minmax(var(--cell-width), 0.5fr));
    grid-gap: 0.8em;
}

a.event {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.event .summary {
    font-weight: bold;
    color: white;
    text-align: center;
}

#event-details {
    /* Align with photos; #event-list h1 has font-size 2em and margin
     * .67em; browsers default line-height to "roughly 1.2". */
    margin-top: calc(2*0.67em + 2*1.2em);
}

.details > .detail {
    display: grid;
    grid-template-columns: 2em 1fr;
}

.detail.date::before {
    content: "📅";
}
.detail.time::before {
    content: "🕗";
}
.detail.place::before {
    content: "📌";
}
.detail.program::before {
    content: "🎼";
}

.details > .detail::before {
    grid-column: 1;
}
.details > .detail > * {
    grid-column: 2;
}

.detail.program {
    padding-left: 0;
    list-style: none;
}

.photo-credits {
    font-size: x-small;
}

@media (min-width: 40em) {
    main {
        display: grid;
        grid-template-columns: 60% 40%;
    }

    main > div {
        padding-left: 1em;
        padding-right: 1em;
    }

    .events {
        --cell-width: 14em;
        --cell-height: 12em;
    }

    a.event {
        position: relative;
    }

    .event img {
        position: absolute;
        object-position: center;
        object-fit: cover;
        height: 100%;
        width: 100%;
        transition: 0.5s;
    }

    .event:not(.active):hover img,
    .event:not(.active):focus-within img,
    .event.active img {
        filter: grayscale(0.8) brightness(0.4);
    }

    .event .summary {
        opacity: 0;
        z-index: 1;
        transition: 0.5s;
    }

    .event:not(.active):hover .summary,
    .event:not(.active):focus-within .summary,
    .event.active .summary {
        opacity: 1;
    }
}

@media (max-width: 40em) {
    .events {
        --cell-width: 10em;
        --cell-height: 8em;
    }

    .event {
        position: relative;
    }

    .event img {
        object-position: center;
        object-fit: cover;
        height: 100%;
        width: 100%;
    }

    .event .summary {
        position: absolute;
        text-align: center;
        bottom: 0;
        margin: 0;
        width: 100%;
        background: #0008;
    }
}