/* ═══════════════════════════════════════════════════════════════════
   artigos.css — card de artigo e grades de artigos. Usado na secao
   Artigos da home, na listagem (artigos.html) e no bloco "Continue
   lendo" de cada artigo.

   Sem imagem: o card e tipografico, como o resto do site. O link do
   titulo se estende sobre o card inteiro (::after), entao ha um unico
   alvo de clique e um unico item na ordem de tabulacao.
   ═══════════════════════════════════════════════════════════════════ */

.rn-posts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-top: var(--space-9);
}

/* Home: tres lado a lado so quando cabem; entre 760 e 900px uma grade
   de duas colunas deixaria o terceiro card orfao. */
@media (min-width: 900px) {
  .rn-posts--home { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 760px) {
  .rn-posts--list,
  .rn-posts--related { grid-template-columns: repeat(2, 1fr); }
}

.rn-posts--related { margin-top: var(--space-6); }

.rn-posts__all {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

/* ── Card ─────────────────────────────────────────────────────────── */

.rn-post-card {
  /* Superficie elevada: cedar-200 mantem AA no eyebrow (ver
     components.css). */
  --text-accent: var(--text-accent-raised);
  --text-heading: var(--text-heading-raised);

  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
  padding: var(--space-6);
  background: var(--surface-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-card);
  transition: border-color var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard);
}

.rn-post-card:hover,
.rn-post-card:focus-within {
  border-color: var(--cedar-300);
  box-shadow: var(--shadow-md);
}

.rn-post-card:has(.rn-post-card__link:focus-visible) {
  box-shadow: var(--shadow-focus);
}

.rn-post-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
}

.rn-post-card__time {
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  font-size: var(--text-caption);
  color: var(--text-subtle);
}

/* Titulos de artigo sao frases longas: Hanken Grotesk, nao Cinzel (regra dos
   titulos com mais de quatro palavras, base.css). */
.rn-post-card__title {
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  font-size: var(--text-subtitle);
  line-height: 1.35;
  letter-spacing: 0;
  color: var(--bone-100);
  margin: 0;
}

.rn-post-card__link,
.rn-post-card__link:hover { color: inherit; }

.rn-post-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.rn-post-card__link:focus-visible { box-shadow: none; }

.rn-post-card__excerpt {
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-size: var(--text-body-md);
  line-height: var(--leading-body);
  color: var(--text-body);
  margin: 0;
}

.rn-post-card__more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-3);
  font-family: var(--font-body);
  font-weight: var(--weight-semibold);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-accent);
}

.rn-post-card__more .rn-icon {
  transition: transform var(--duration-base) var(--ease-standard);
}

.rn-post-card:hover .rn-post-card__more .rn-icon { transform: translateX(4px); }

/* Destaque da listagem: o artigo mais recente ocupa a linha inteira. */
@media (min-width: 760px) {
  .rn-post-card--featured {
    grid-column: 1 / -1;
    padding: var(--space-8) var(--space-7);
  }

  .rn-post-card--featured .rn-post-card__title {
    font-weight: var(--weight-light);
    font-size: var(--text-display-3);
    line-height: 1.3;
    max-width: 30ch;
  }

  .rn-post-card--featured .rn-post-card__excerpt {
    font-size: var(--text-lead);
    max-width: var(--measure-prose);
  }
}

@media (prefers-reduced-motion: reduce) {
  .rn-post-card:hover .rn-post-card__more .rn-icon { transform: none; }
}