/* ── Cover metadata overlay ── */
:root {
  --pf-cover-overlay-duration: 420ms;
  --pf-cover-overlay-ease: cubic-bezier(0.45, 0, 0.55, 1);
}

.portfolio__cover-image-wrap {
  isolation: isolate;
}

.portfolio__cover-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: var(--pf-radius);
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--background-canvas-inverse) 34%, transparent) 0%,
    color-mix(in srgb, var(--background-canvas-inverse) 16%, transparent) 42%,
    transparent 72%
  );
  opacity: 0;
  transition: opacity var(--pf-cover-overlay-duration) var(--pf-cover-overlay-ease);
  pointer-events: none;
}

.portfolio__cover-meta {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: end;
  gap: var(--space-12);
  padding: var(--space-16);
  color: var(--content-primaryInverse);
  font-family: var(--pf-font);
  opacity: 0;
  pointer-events: none;
  transform: translateY(var(--space-8));
  transition:
    opacity var(--pf-cover-overlay-duration) var(--pf-cover-overlay-ease),
    transform var(--pf-cover-overlay-duration) var(--pf-cover-overlay-ease);
}

.portfolio__cover-brand,
.portfolio__cover-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.portfolio__cover-brand {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-caption);
}

.portfolio__cover-brand-mark {
  display: block;
  inline-size: var(--space-48);
  block-size: var(--space-24);
  max-inline-size: 100%;
  flex-shrink: 0;
  overflow: visible;
  color: var(--content-primaryInverse);
}

.portfolio__cover-brand-mark--okx-logo {
  inline-size: var(--space-20);
  block-size: var(--space-20);
  margin-block-end: calc(var(--space-4) / 2);
}

.portfolio__cover-title {
  justify-self: end;
  max-width: 100%;
  font-size: var(--font-size-body2);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-body2);
  text-align: right;
}

.portfolio__cover:focus-visible {
  outline: 1px solid var(--content-primaryInverse);
  outline-offset: var(--space-4);
}

.portfolio__cover:focus-visible .portfolio__cover-image-wrap::after,
.portfolio__cover.touch-hover .portfolio__cover-image-wrap::after {
  opacity: 1;
}

.portfolio__cover:focus-visible .portfolio__cover-meta,
.portfolio__cover.touch-hover .portfolio__cover-meta {
  opacity: 1;
  transform: translateY(0);
}

@media (hover: hover) and (pointer: fine) {
  .portfolio__cover:hover .portfolio__cover-image-wrap::after {
    opacity: 1;
  }

  .portfolio__cover:hover .portfolio__cover-meta {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio__cover-image-wrap::after,
  .portfolio__cover-meta {
    transition: none;
  }

  .portfolio__cover-meta {
    transform: none;
  }
}

@media (max-width: 540px) {
  .portfolio__cover-meta {
    padding: var(--space-12);
  }

  .portfolio__cover-title {
    font-size: var(--font-size-caption);
    line-height: var(--line-height-caption);
  }
}