:root {
  --card-gap: clamp(1rem, 2vw, 1.4rem);
  --card-board-padding: clamp(2rem, 5vw, 4rem) clamp(4rem, 5vw, 8rem);
  --card-board-padding-mobile: var(--zsection-mobile-padding);
  --card-title-padding: 0.85rem 1rem;
  --card-title-font-size: var(--text-highlight-size);
  --card-title-font-size-mobile: clamp(0.8rem, 3.2vw, 1.05rem);
  --card-aspect: 4 / 3;
  --card-hover-translate: translateY(-0.5rem);
  --card-min-size: 15rem;
  --card-min-size-mobile: 7.5rem;
  
  --card-fade-transition: var(--transition-image);
  --card-overlay-gradient: linear-gradient(
    180deg,
    color-mix(in srgb, black 0%, transparent) 70%,
    color-mix(in srgb, black 70%, transparent) 100%
  );

  --card-loader-size: 2rem;
  --card-loader-ring-width: 0.25rem;
  --card-loader-ring-gradient: conic-gradient(
    from 0deg,
    transparent 0deg,
    transparent 90deg,
    var(--color-primary) 350deg,
    transparent 360deg
  );
  --card-loader-spin: 1s linear infinite;
}

.card-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--card-min-size), 1fr));
  gap: var(--card-gap);
  padding: var(--card-board-padding);
}

@media (min-width: 1200px) {
  .card-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.is-mobile .card-board {
  --card-min-size: var(--card-min-size-mobile);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: var(--card-board-padding-mobile);
}

.card-board__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 1rem;
  background: var(--color-background);
  border-radius: var(--radius);
  color: var(--color-body);
  border: 1px dashed var(--color-primary);
}

.card {
  position: relative;
  aspect-ratio: var(--card-aspect);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-accent-green);
  cursor: pointer;
  transition: transform var(--motion-fast), box-shadow var(--motion-default);
}

.card:hover,
.card:focus-visible {
  transform: var(--card-hover-translate);
  box-shadow: var(--shadow-cta);
}

.card__placeholder {
  position: absolute;
  inset: 0;
  background: var(--color-accent-green);
  z-index: 1;
  opacity: 1;
  visibility: visible;
  transition: opacity var(--card-fade-transition),
    visibility 0s linear var(--card-fade-transition);
  pointer-events: none;
}

.card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity var(--card-fade-transition);
  position: relative;
  z-index: 2;
}

.card__overlay {
  position: absolute;
  inset: 0;
  background: var(--card-overlay-gradient);
  z-index: 3;
}

.card__title {
  --text-highlight-color: var(--color-background);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--card-title-padding);
  font-size: var(--card-title-font-size);
  z-index: 4;
}

.is-mobile .card__title {
  font-size: var(--card-title-font-size-mobile);
}


.card.is-loaded .card__image {
  opacity: 1;
}

.card.is-loaded .card__placeholder {
  opacity: 0;
  visibility: hidden;
}

.card__image,
.card__placeholder {
  will-change: opacity;
}

@media (prefers-reduced-motion: reduce) {
  .card__image,
  .card__placeholder {
    transition: none;
  }
}

.card.is-placeholder {
  pointer-events: none;
}

.card-loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: transparent;
  z-index: 6;
  pointer-events: none;
}

.card-loader.has-preview {
  background: transparent;
}

.card-loader::after {
  content: '';
  width: var(--card-loader-size);
  height: var(--card-loader-size);
  border-radius: 50%;
  background: var(--card-loader-ring-gradient);
  -webkit-mask: radial-gradient(
    farthest-side,
    transparent calc(100% - var(--card-loader-ring-width)),
    #000 calc(100% - var(--card-loader-ring-width) + 1px)
  );
  mask: radial-gradient(
    farthest-side,
    transparent calc(100% - var(--card-loader-ring-width)),
    #000 calc(100% - var(--card-loader-ring-width) + 1px)
  );
  animation: loaderSpin var(--card-loader-spin);
}

@keyframes loaderSpin {
  to {
    transform: rotate(360deg);
  }
}