/* ===========================
   Datacodex Reference Cards (Plan 59, Groups 5-6)
   Scoped, isolated stylesheet — rollback is a single <link> removal.
   Design: "inline reference" — citation/reference language, not a banner.
   Uses only tokens already defined in base.css (light + dark).
   Logical properties only — never a [dir="ltr"]/[dir="rtl"] override on top
   of a logical property (that duplicates and breaks the automatic RTL/LTR flip).
   =========================== */

.datacodex-card-group {
  margin-block: var(--spacing-md);
}

.datacodex-card-group__note {
  margin-block-start: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.datacodex-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  border: 1px solid var(--color-border);
  border-inline-start: 4px solid var(--color-primary);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-block-end: var(--spacing-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.datacodex-card:last-child {
  margin-block-end: 0;
}

.datacodex-card:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-secondary);
}

/* Media side — the wrapper carries its own aspect-ratio (not the card's stretched
   height): `height: 100%` on the image previously overrode `aspect-ratio` because the
   row's default `align-items: stretch` forced the wrapper to the card's full height
   (driven by the taller text content), so the image cropped far beyond 16:9. Opting
   the wrapper out of stretch and giving *it* the ratio reserves the correct space
   before load (no CLS) and keeps a true 16:9 image regardless of how tall the text
   side is; the wrapper is vertically centered when the content side is taller. */
.datacodex-card__media {
  flex: 0 0 34%;
  align-self: center;
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.datacodex-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 180ms ease-in-out;
}

.datacodex-card:hover .datacodex-card__image {
  transform: scale(1.015);
}

.datacodex-card__video-badge {
  position: absolute;
  inset-block-end: 6px;
  inset-inline-end: 6px;
  background: rgba(0, 0, 0, 0.7);
  color: #ffffff;
  font-size: 0.7rem;
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
  line-height: 1.3;
  pointer-events: none;
}

/* Content side */
.datacodex-card__content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px 22px;
  gap: 8px;
}

.datacodex-card__preamble {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 500;
  line-height: 1.4;
}

.datacodex-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  margin: 0;
}

.datacodex-card__summary {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin: 0;
}

.datacodex-card__date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.datacodex-card__cta {
  align-self: flex-start;
  margin-block-start: 6px;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.datacodex-card:hover .datacodex-card__cta {
  color: var(--color-primary-dark);
}

/* Explore-the-full-log link (once per page, before the final CTA) */
.datacodex-explore {
  margin-block: var(--spacing-md);
}

.datacodex-explore__link {
  display: inline-block;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.datacodex-explore__link:hover {
  color: var(--color-primary-dark);
}

/* Homepage strip (Group 7). The cards retain the same reference treatment; only
   their responsive layout changes to the approved 1/2/3-column presentation. */
.datacodex-homepage-strip {
  background: var(--color-bg-secondary);
}

.datacodex-homepage-strip__header {
  text-align: center;
  margin-block-end: var(--spacing-md);
}

.datacodex-homepage-strip__title {
  margin-block-end: 0.4rem;
  color: var(--color-text);
  font-size: 1.5rem;
  font-weight: 700;
}

.datacodex-homepage-strip__source {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.datacodex-homepage-strip__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

.datacodex-homepage-strip__footer {
  text-align: center;
  margin-block-start: var(--spacing-md);
}

.datacodex-homepage-strip__cta {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.datacodex-homepage-strip__cta:hover {
  background: var(--color-text);
}

@media (min-width: 700px) {
  .datacodex-card--homepage {
    flex-direction: column;
  }

  .datacodex-card--homepage .datacodex-card__media {
    flex: 0 0 auto;
    align-self: stretch;
    width: 100%;
  }

  .datacodex-card--homepage .datacodex-card__content {
    justify-content: flex-start;
  }
}

@media (min-width: 700px) and (max-width: 999px) {
  .datacodex-homepage-strip__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .datacodex-homepage-strip__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== Mobile (< 700px): media-row, not stacked ===== */
@media (max-width: 699px) {
  .datacodex-card__media {
    flex: 0 0 32%;
    /* aspect-ratio (base rule) reserves the space at this width too — no min-height needed */
  }
  .datacodex-card__content {
    padding: 16px 18px;
    gap: 7px;
  }
}

/* ===== Small mobile (< 380px): image above text ===== */
@media (max-width: 379px) {
  .datacodex-card {
    flex-direction: column;
  }
  .datacodex-card__media {
    flex: 0 0 auto;
    align-self: stretch;
    width: 100%;
    /* aspect-ratio (base rule) gives the correct height for the full-width image */
  }
  .datacodex-card__content {
    width: 100%;
  }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .datacodex-card,
  .datacodex-card__image,
  .datacodex-card__cta,
  .datacodex-explore__link,
  .datacodex-homepage-strip__cta {
    transition: none;
  }
  .datacodex-card:hover .datacodex-card__image {
    transform: none;
  }
}