:root {
  --article-card-max-width: 390px;
  --article-card-max-width-sp: 295px;
  --article-card-gap: var(--space-sm);

  --article-card-thumb-aspect: 3 / 2;
  --article-card-thumb-bg: var(--color-primary-light);
  --article-card-thumb-overlay: var(--color-white);
  --article-card-thumb-overlay-opacity: 0.3;

  --article-card-new-badge-width: 80px;
  --article-card-new-badge-padding: 6px 12px;
  --article-card-new-badge-line-height: 28px;
  --article-card-new-badge-bg: var(--color-accent);
  --article-card-new-badge-color: var(--color-white);

  --article-card-date-line-height: 28px;

  --article-card-tag-gap: 12px;
  --article-card-tag-padding: var(--space-xs) 12px;
  --article-card-tag-bg: var(--color-primary-light);
  --article-card-tag-color: var(--color-primary);
  --article-card-tag-bg-hover: var(--color-primary);
  --article-card-tag-color-hover: var(--color-white);

  --article-card-placeholder-bg: linear-gradient(
    to bottom right,
    var(--color-primary-light),
    var(--color-primary-light-2)
  );
}

/* ==========================================================================
   Article Card — cross-blog reusable component
   Design: thumbnail + NEW badge + date + title + tag chips
   ========================================================================== */

.c-article-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.c-article-card {
  display: flex;
  flex-direction: column;
  gap: var(--article-card-gap);
  flex: 0 0 auto;
  width: 100%;
  max-width: var(--article-card-max-width);
  background-color: transparent;
  text-decoration: none;
  color: inherit;
}

/* Thumbnail — 3:2 aspect per Figma (360x240)
========================================================================== */

.c-article-card__thumb {
  position: relative;
  width: 100%;
  aspect-ratio: var(--article-card-thumb-aspect);
  overflow: hidden;
  background-color: var(--article-card-thumb-bg);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.c-article-card__thumb-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.c-article-card__thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--article-card-thumb-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--easing-default);
}

.c-article-card:hover .c-article-card__thumb::after {
  opacity: var(--article-card-thumb-overlay-opacity);
}

.c-article-card__thumb-placeholder {
  width: 100%;
  height: 100%;
  background: var(--article-card-placeholder-bg);
}

/* NEW badge (top-left of thumbnail)
========================================================================== */

.c-article-card__new-badge {
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--article-card-new-badge-width);
  padding: var(--article-card-new-badge-padding);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--article-card-new-badge-line-height);
  color: var(--article-card-new-badge-color);
  background-color: var(--article-card-new-badge-bg);
  border-right: 1px solid var(--color-white);
  border-bottom: 1px solid var(--color-white);
  border-top-left-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  pointer-events: none;
}

/* Body
========================================================================== */

.c-article-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  flex: 1;
}

.c-article-card__meta-block {
  display: flex;
  flex-direction: column;
}

.c-article-card__date {
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  line-height: var(--article-card-date-line-height);
  color: var(--color-text-primary);
}

.c-article-card__title {
  margin: 0;
  font-family: var(--font-main);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Tag list — pill chips (blue/50 bg, blue/500 text)
========================================================================== */

.c-article-card__tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--article-card-tag-gap);
  list-style: none;
  margin: 0;
  padding: 0;
}

.c-article-card__tag-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--article-card-tag-padding);
  font-family: var(--font-main);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-small);
  color: var(--article-card-tag-color);
  background-color: var(--article-card-tag-bg);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition:
    background-color var(--duration-normal) var(--easing-default),
    color var(--duration-normal) var(--easing-default);
}

.c-article-card:hover .c-article-card__tag-item {
  background-color: var(--article-card-tag-bg-hover);
  color: var(--article-card-tag-color-hover);
}

/* Modifier: no thumbnail (future use — search results)
========================================================================== */

.c-article-card--no-thumb .c-article-card__thumb {
  display: none;
}

/* Tablet (768px-1023px)
========================================================================== */

@media (max-width: 1023px) and (min-width: 768px) {
  .c-article-grid {
    gap: var(--space-md);
    justify-content: center;
  }
}

/* Mobile (<768px)
========================================================================== */

@media (max-width: 767px) {
  .c-article-grid {
    gap: var(--space-md);
  }

  .c-article-card {
    max-width: 100%;
  }

  .c-article-card__body {
    padding-inline: 0;
  }
}