/* ============================================
   Resource cards
   (template-parts/components/resource-tile.php)

   Every resource grid: the homepage's three, the /resources library and the
   featured archive (/from-partners), including their AJAX-filtered results.

   Following the AiAd27 style guide (SlideForge docs/aiad27-style-guide.md):
   - The photo is shown as it is. No strand-colour wash, which turned photos
     murky and fell back to a muddy gradient when there was no photo.
   - The strand label is bright on ink, the pairing the guide passes on any
     ground, so it reads over any photo.
   - The chamfer is used once per card, on the hero. It is the panel cut:
     20.8% of the shorter side, top-right and bottom-left.
   - The title appears once, below the hero, in black. Hierarchy comes from
     size and weight, not colour.
   ============================================ */

.resource-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
    gap: 2.5rem 1.75rem;
    margin-top: 2rem;
}

.resource-tile {
    --rt-bright: var(--a27-cream, #F6F4ED);
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Bright is for the pill on ink; deep is for type on cream (the guide's contrast table). */
.resource-tile--safe        { --rt-bright: var(--a27-safe, #00BEDD);        --rt-deep: var(--a27-safe-deep, #006A7D); }
.resource-tile--smart       { --rt-bright: var(--a27-smart, #FF7038);       --rt-deep: var(--a27-smart-deep, #A7350B); }
.resource-tile--creative    { --rt-bright: var(--a27-creative, #AC91FF);    --rt-deep: var(--a27-creative-deep, #6441B8); }
.resource-tile--responsible { --rt-bright: var(--a27-responsible, #63DF93); --rt-deep: var(--a27-responsible-deep, #176E3B); }
.resource-tile--future      { --rt-bright: var(--a27-future, #FA83EB);      --rt-deep: var(--a27-future-deep, #983488); }

/* ── Hero ─────────────────────────────────── */
.resource-tile__hero {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--a27-ink, #231F20);
    /* 20.8% of the height is 13% of the width at 16:10. */
    clip-path: polygon(0 0, 87% 0, 100% 20.8%, 100% 100%, 13% 100%, 0 79.2%);
}

.resource-tile__photo,
.resource-tile__poster {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.resource-tile__photo {
    object-fit: cover;
    transition: transform 0.4s ease;
}

.resource-tile:hover .resource-tile__photo {
    transform: scale(1.03);
}

.resource-tile__strand {
    position: absolute;
    top: 0.875rem;
    left: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.7rem;
    background: var(--a27-ink, #231F20);
    color: var(--rt-bright);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.14em;
}

.resource-tile__strand svg {
    flex: none;
}

/* ── Body ─────────────────────────────────── */
.resource-tile__body {
    padding: 1rem 0.125rem 0;
}

.resource-tile__meta {
    min-height: 1.2em;           /* holds the line when a card has no format or time */
    margin: 0 0 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--a27-dim, #54504E);
}

/* The strand word belongs to the phone layout only; the pill carries it elsewhere. */
.resource-tile__meta-strand {
    display: none;
    color: var(--rt-deep, var(--a27-dim, #54504E));
}

.resource-tile__title {
    margin: 0 0 0.5rem;
    font-size: 1.375rem;
    font-weight: 700;
    line-height: 1.18;
    letter-spacing: -0.02em;
}

.resource-tile__title a {
    color: var(--a27-ink, #231F20);
    text-decoration: none;
}

/* The title is the card's one link; this stretches it over the whole card. */
.resource-tile__title a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.resource-tile:hover .resource-tile__title a {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.15em;
}

.resource-tile__title a:focus-visible {
    outline: none;
}

.resource-tile__title a:focus-visible::after {
    outline: 3px solid var(--a27-ink, #231F20);
    outline-offset: 6px;
}

.resource-tile__excerpt {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--a27-dim, #54504E);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── "View all" ───────────────────────────── */
/* A plain link, where there used to be a black card the size of a resource. */
.resource-tiles__more {
    display: inline-flex;
    gap: 0.5rem;
    margin-top: 1.75rem;
    font-weight: 700;
    color: var(--a27-ink, #231F20);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.2em;
}

.resource-tiles__more:hover {
    text-decoration-thickness: 3px;
}

/* ── Phones: compact rows ─────────────────────
   A full-width 16:10 card took about a screen each, so a phone showed one
   resource at a time. Below 640px each card becomes a row, a square hero
   beside the text, and about four fit on a screen. The square keeps the
   panel's two cuts at 20.8%. At that size the pill won't fit, so the
   strand moves into the meta line in its deep shade. */
@media (max-width: 640px) {
    .resource-tiles {
        grid-template-columns: minmax(0, 1fr);
        gap: 0;
        border-top: 1px solid var(--a27-rule, #C9C6BE);
    }

    .resource-tile {
        display: grid;
        grid-template-columns: 6.5rem minmax(0, 1fr);
        gap: 1rem;
        align-items: start;
        padding: 1rem 0;
        border-bottom: 1px solid var(--a27-rule, #C9C6BE);
    }

    .resource-tile__hero {
        aspect-ratio: 1;
        clip-path: polygon(0 0, 79.2% 0, 100% 20.8%, 100% 100%, 20.8% 100%, 0 79.2%);
    }

    .resource-tile__strand {
        display: none;
    }

    .resource-tile__body {
        padding: 0;
    }

    .resource-tile__meta {
        min-height: 0;               /* one column: nothing to line up with */
        margin-bottom: 0.35rem;
        font-size: 0.6875rem;
        letter-spacing: 0.1em;       /* keeps STRAND · FORMAT · TIME on one line more often */
    }

    .resource-tile__meta-strand {
        display: inline;
    }

    /* Non-breaking either side, so a line never starts with the dot. (A plain
       space after a CSS hex escape is swallowed as its terminator, so " \00B7 "
       would lose the space after the dot.) */
    .resource-tile__meta-strand + .resource-tile__meta-info::before {
        content: "\00A0\00B7\00A0";
    }

    .resource-tile__title {
        margin-bottom: 0.25rem;
        font-size: 1.0625rem;
        line-height: 1.2;
    }

    .resource-tile__excerpt {
        font-size: 0.875rem;
        -webkit-line-clamp: 2;
    }

    .resource-tile__title a:focus-visible::after {
        outline-offset: 2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .resource-tile__photo {
        transition: none;
    }

    .resource-tile:hover .resource-tile__photo {
        transform: none;
    }
}