@layer base, mouse, demo;

@layer demo {


    .gallery {
        --size: 100%;
        --grid-cols: repeat(3, 1fr);
        --grid-rows: repeat(6,1fr);
        --gap: .8rem;
        --main-image-columns: 1 / -1;
        --main-image-rows: 1 / span 3;
        --main-img-w: 100%;
        --main-img-h: auto;

        @media (width > 600px) {
            --size: 120px;
            --grid-cols: repeat(6, 1fr);
            --grid-rows: repeat(3,1fr);
            --main-image-columns: 5 / -1;
            --main-image-rows: 1 / span 5;
      /*      --main-img-w: auto;*/
            --main-img-h: 100%;
        }

        width: min(100%, 1000px);
        display: grid;
        margin: 80px 0 80px 0;
        grid-template-columns: var(--grid-cols);
        grid-template-rows: var(--grid-rows);
        gap: var(--gap);
        position: relative;
        > .main-img

{
    position: relative;
    grid-column: var(--main-image-columns);
    grid-row: var(--main-image-rows);
    display: grid;
    place-content: center;
    padding: 1em;
    font-size: 2rem;
    anchor-name: --main-img;
    overflow: hidden;
    /* gradient to help with readability of the image title */
    border-image: fill 0 inherit;


{
    margin: 0;
    font-size: clamp(1rem, 2.5vw + 0.45rem, 1.2rem);
}
/* if any sibling has target - hide title */
&:has(~:target) h1 {
    display: none;
}

}

> a {
    display: block;
    aspect-ratio: 2;
    border: 1px dotted steelblue;
    overflow: hidden;
    &:hover:not(:target) img

{
    opacity: .5;
}

& > img {
    object-fit: cover;
    transition: opacity 300ms ease-in-out;
}
/* set anchor position on current :target image */
&:target img {
    position: absolute;
    inset: anchor(top) anchor(right) anchor(bottom) anchor(left);
    position-anchor: --main-img;
    width: var(--main-img-w,0);
    height: var(--main-img-h,0);
    animation: --fade-in 750ms ease-in-out;
    z-index: -1;
}

> h2 {
    color: white;
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0;
    translate: 0 1lh;
    transition: all 300ms ease-in-out;
}

&:target h2 {
    position: absolute;
    inset: auto;
    bottom: anchor(bottom);
    left: calc(anchor(left) + 1rem);
    position-anchor: --main-img;
    opacity: 1;
    translate: 0 0;
}

}
}

@keyframes --fade-in {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

}

/* general styling not relevant for this demo */
@layer base {
    * {
        box-sizing: border-box;
    }

    :root {
        color-scheme: light dark;
        --bg-dark: rgb(12, 10, 9);
        --bg-light: rgb(248, 244, 238);
        --txt-light: rgb(10, 10, 10);
        --txt-dark: rgb(245, 245, 245);
        );
        --line-light: rgba(0 0 0 / .25);
        --line-dark: rgba(255 255 255 / .25);
        --clr-bg: light-dark(var(--bg-light), var(--bg-dark));
        --clr-txt: light-dark(var(--txt-light), var(--txt-dark));
        --clr-lines: light-dark(var(--line-light), var(--line-dark));
    }

/*    body {
        background-color: var(--clr-bg);
        color: var(--clr-txt);
        min-height: 100svh;
        margin: 0;
        padding: 2rem;
        font-family: "Jura", sans-serif;
        font-size: 1rem;
        line-height: 1.5;
        display: grid;
        place-items: center;
        gap: 2rem;
    }*/

    @supports not (position-anchor: --test) {
        body::before {
            content: "Sorry, your browser doesn't support anchor-positioning";
            position: fixed;
            top: 2rem;
            left: 50%;
            translate: -50% 0;
            font-size: 0.8rem;
        }
    }

    img {
        max-width: 100%;
        display: block;
    }
}