/* Portfolio wall (homepage only). See _includes/portfolio.html. */

.pf-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 1.5em 0 0;
  list-style: none;
}

/* style.css indents lists and underlines links in list items */
#content .pf-wall {
  padding: 0;
}

#content .pf-item {
  margin: 0;
}

/* /#portfolio-<slug> scrolls to a tile and marks it */
.pf-item {
  scroll-margin: 96px 0;
}

.pf-item:target .pf-tile {
  border-color: var(--c-accent);
}

#content .pf-tile {
  text-decoration: none;
}

.pf-tile {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100%;
  min-height: 116px;
  box-sizing: border-box;
  padding: 11px 13px 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  color: var(--c-text);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.pf-tile:focus-visible {
  border-radius: var(--r-md);
}

.pf-stage {
  grid-row: 1;
  justify-self: end;
  font: 600 9.5px/1 var(--f-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}

/* Every logo is a one-color mask filled with the page's ink, so the wall
   reads as one set in both themes. Logos share the same area, not the same
   width, so a wide wordmark and a square mark look the same size. */
.pf-logo {
  --area: 2600;
  grid-row: 2;
  align-self: center;
  justify-self: center;
  display: block;
  width: min(100%, 140px);
  height: 26px;
  margin: 10px 0;
  background-color: currentColor;
  -webkit-mask: var(--logo) center / contain no-repeat;
  mask: var(--logo) center / contain no-repeat;
  transition: background-color 0.15s ease;
}

@supports (width: calc(1px * sqrt(4))) {
  .pf-logo {
    width: min(100%, 140px, calc(1px * sqrt(var(--area) * var(--ratio)) * var(--scale, 1)));
    height: auto;
    aspect-ratio: var(--ratio);
  }
}

.pf-tag {
  grid-row: 3;
  font-size: 12px;
  line-height: 1.3;
  color: var(--c-text-muted);
  text-wrap: balance;
  transition: color 0.15s ease;
}

/* The name is for screen readers, and for when logos cannot show */
.pf-name {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* One sentence on the company, shown above the tile on hover or focus.
   It stays in the link's text for screen readers. */
.pf-about {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 9px);
  z-index: 2;
  width: max-content;
  max-width: 236px;
  padding: 9px 12px 10px;
  border-radius: var(--r-md);
  color: var(--c-bg);
  background: var(--c-text);
  box-shadow: 0 10px 24px -12px rgb(0 0 0 / 0.45);
  font: 400 14px/1.4 var(--f-prose);
  text-align: left;
  opacity: 0;
  translate: -50% 4px;
  pointer-events: none;
  transition: opacity 0.15s ease, translate 0.15s ease;
}

/* The latest announced round, under a hairline */
.pf-round {
  display: block;
  margin-top: 7px;
  padding-top: 7px;
  border-top: 1px solid color-mix(in srgb, currentColor 22%, transparent);
  font: 500 11.5px/1.4 var(--f-body);
  opacity: 0.8;
}

.pf-about::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -6px;
  border: 6px solid transparent;
  border-top-color: var(--c-text);
}

/* Tiles at the ends of a row keep their note on the page */
.pf-item:nth-child(4n + 1) .pf-about {
  left: -1px;
  translate: 0 4px;
}

.pf-item:nth-child(4n + 1) .pf-about::after {
  left: 32px;
}

.pf-item:nth-child(4n) .pf-about {
  left: auto;
  right: -1px;
  translate: 0 4px;
}

.pf-item:nth-child(4n) .pf-about::after {
  left: auto;
  right: 26px;
}

@media (hover: hover) {
  .pf-tile:hover {
    border-color: transparent;
    background-color: var(--c-surface);
  }

  .pf-tile:hover .pf-logo {
    background-color: var(--c-accent);
  }

  .pf-tile:hover .pf-tag {
    color: var(--c-text);
  }

  .pf-tile:hover .pf-about {
    opacity: 1;
    translate: -50% 0;
    transition-delay: 0.3s;
  }

  .pf-item:nth-child(4n + 1) .pf-tile:hover .pf-about,
  .pf-item:nth-child(4n) .pf-tile:hover .pf-about {
    translate: 0 0;
  }
}

.pf-tile:focus-visible .pf-logo {
  background-color: var(--c-accent);
}

.pf-tile:focus-visible .pf-about {
  opacity: 1;
  translate: -50% 0;
}

.pf-item:nth-child(4n + 1) .pf-tile:focus-visible .pf-about,
.pf-item:nth-child(4n) .pf-tile:focus-visible .pf-about {
  translate: 0 0;
}

@media (max-width: 760px) {
  .pf-wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .pf-tile {
    min-height: 96px;
    padding: 9px 10px 10px;
  }

  .pf-logo {
    --area: 2000;
    margin: 7px 0;
  }

  /* No room above the tiles for notes on narrow screens; screen readers
     still read them */
  .pf-about {
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

@media (max-width: 520px) {
  .pf-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pf-tile {
    min-height: 92px;
  }

  .pf-logo {
    --area: 2100;
  }
}

/* High-contrast modes replace backgrounds, which would hide the masks */
@media (forced-colors: active) {
  .pf-logo {
    display: none;
  }

  .pf-name {
    position: static;
    grid-row: 2;
    align-self: center;
    width: auto;
    height: auto;
    clip-path: none;
    font-weight: 600;
  }
}

@media print {
  .pf-logo {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pf-tile,
  .pf-logo,
  .pf-tag,
  .pf-about {
    transition: none;
  }
}