/**
 * Cards Layout & Performance Styles (Zero CLS - Core Web Vitals)
 * Tasks: AUD-PERF-001 (Zero CLS) & AUD-CMP-001 (Unified Card Component)
 * 
 * Centraliza e padroniza os cards em um componente unificado com tokens de Design System:
 * - Variantes: .c-card--grid, .c-card--horizontal, .c-card--compact
 * - Tokens: var(--card-radius), var(--card-shadow), var(--card-border)
 * - Compatibilidade total: .card-post, .gl-platform-card, .article-card, .news-item, .related-post-card
 */

/* ==========================================================================
   Contêiner da Mídia / Imagem (Reserva Estrita de Espaço 16:9)
   ========================================================================== */
.card-post-thumb,
.c-card__media,
.gl-platform-card__media,
.gl-content-card__media,
.gl-card__media {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #e2e8f0;
  background: linear-gradient(
    110deg,
    #e9ecef 8%,
    #f3f4f6 18%,
    #e9ecef 33%
  );
  background-size: 200% 100%;
  overflow: hidden;
  border-radius: inherit inherit 0 0;
  contain: paint layout;
}

/* Imagens com aspect-ratio 16:9 estrito e object-fit cover */
.card-post-thumb img,
.card-post-img,
.c-card__img,
.gl-platform-card__media img,
.gl-content-card__media img,
.gl-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 0;
  transition: transform 0.35s ease, opacity 0.25s ease;
}

/* Animação suave de hover sem deslocar o layout */
.c-card:hover .c-card__media img,
.card-post:hover .card-post-thumb img,
.gl-platform-card:hover .gl-platform-card__media img,
.gl-card:hover .gl-card__media img {
  transform: scale(1.025);
}

/* Placeholder quando não há imagem destacada */
.card-post-placeholder,
.c-card__placeholder,
.gl-platform-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  color: var(--nav-brand-main, #4930c9);
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.card-post-placeholder svg,
.c-card__placeholder svg,
.card-post-placeholder .gl-icon,
.c-card__placeholder .gl-icon {
  width: 44px;
  height: 44px;
  opacity: 0.65;
}

/* ==========================================================================
   Componente Base de Card (Unificado via Tokens do Design System)
   ========================================================================== */
.c-card,
.card-post,
.gl-platform-card,
.article-card,
.news-item,
.related-post-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border: var(--card-border, 1px solid var(--nav-border-subtle, #e4e7ec));
  border-radius: var(--card-radius, var(--radius-lg, 18px));
  background-color: var(--card-bg, #ffffff);
  box-shadow: var(--card-shadow, var(--shadow-sm, 0 1px 3px rgba(16, 24, 40, 0.04)));
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.22s ease,
              box-shadow 0.22s ease;
}

.c-card:hover,
.card-post:hover,
.gl-platform-card:hover,
.article-card:hover,
.news-item:hover,
.related-post-card:hover {
  border-color: var(--nav-brand-border, #bbaaff);
  box-shadow: var(--card-shadow-hover, var(--shadow-xl, 0 16px 36px rgba(41, 30, 94, 0.09)));
  transform: translateY(-3px);
}

.c-card__body,
.card-post-body,
.gl-platform-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 1.35rem 1.35rem;
}

.c-card__badge,
.gl-platform-card__recommendation {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--nav-brand-main, #4930c9);
  background: var(--gl-violet-50, #f4f1ff);
  padding: 4px 10px;
  border-radius: var(--radius-full, 9999px);
  margin-bottom: 0.65rem;
}

.c-card__badge .gl-icon,
.c-card__badge svg {
  width: 13px;
  height: 13px;
}

.c-card__category,
.card-post-category,
.gl-platform-card__category {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--nav-brand-main, #4930c9);
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: color 0.2s ease;
}

.c-card__category:hover,
.card-post-category:hover,
.gl-platform-card__category:hover {
  color: var(--nav-brand-vibrant, #5b3df5);
}

.c-card__title,
.card-post-title,
.gl-platform-card__title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--nav-text-main, #101828);
  margin-bottom: 0.55rem;
  letter-spacing: -0.015em;
}

.c-card__title a,
.card-post-title a,
.gl-platform-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.c-card__title a:hover,
.card-post-title a:hover,
.gl-platform-card__title a:hover {
  color: var(--nav-brand-main, #4930c9);
}

.c-card__excerpt,
.card-post-excerpt,
.gl-platform-card__excerpt {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--nav-text-muted, #475467);
  margin-bottom: 1.1rem;
  flex-grow: 1;
}

.c-card__footer,
.card-post-footer,
.gl-platform-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid var(--nav-border-subtle, #f1f5f9);
  font-size: 0.78rem;
  color: var(--post-meta-color, var(--text-secondary, #475569));
}

.c-card__meta,
.card-post-meta {
  color: var(--post-meta-color, var(--text-secondary, #475569));
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.c-card__action,
.card-post-action,
.gl-platform-card__footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 750;
  color: var(--nav-brand-main, #4930c9);
  text-decoration: none;
  transition: transform 0.2s ease, color 0.2s ease;
}

.c-card__action:hover,
.card-post-action:hover,
.gl-platform-card__footer a:hover {
  color: var(--nav-brand-vibrant, #5b3df5);
  transform: translateX(3px);
}

/* ==========================================================================
   Variante 1: Grid Normal (.c-card--grid, .card-post--grid)
   ========================================================================== */
.c-card--grid,
.card-post--grid {
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Variante 2: Horizontal / Destaque (.c-card--horizontal, .card-post--featured)
   ========================================================================== */
@media (min-width: 768px) {
  .c-card--horizontal,
  .c-card--featured,
  .card-post--horizontal,
  .card-post--featured,
  .gl-platform-card--featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    min-height: 380px;
    border-radius: var(--card-radius-featured, var(--radius-xl, 24px));
  }

  .c-card--horizontal .c-card__media,
  .card-post--featured .card-post-thumb,
  .gl-platform-card--featured .gl-platform-card__media {
    aspect-ratio: auto;
    min-height: 100%;
    height: 100%;
    border-radius: inherit 0 0 inherit;
  }

  .c-card--horizontal .c-card__body,
  .card-post--featured .card-post-body,
  .gl-platform-card--featured .gl-platform-card__body {
    padding: 2.25rem 2.5rem;
    justify-content: center;
  }

  .c-card--horizontal .c-card__title,
  .card-post--featured .card-post-title,
  .gl-platform-card--featured .gl-platform-card__title {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    line-height: 1.15;
  }
}

/* ==========================================================================
   Variante 3: Compacto (.c-card--compact, .card-post--compact)
   ========================================================================== */
.c-card--compact,
.card-post--compact {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 16px;
  padding: 12px;
  align-items: center;
  border-radius: var(--card-radius-compact, var(--radius-md, 14px));
}

.c-card--compact .c-card__media,
.card-post--compact .card-post-thumb {
  width: 104px;
  height: 104px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm, 8px);
}

.c-card--compact .c-card__media img,
.card-post--compact .card-post-thumb img {
  aspect-ratio: 1 / 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.c-card--compact .c-card__body,
.card-post--compact .card-post-body {
  padding: 0;
  justify-content: center;
}

.c-card--compact .c-card__title,
.card-post--compact .card-post-title {
  font-size: 0.95rem;
  line-height: 1.35;
  margin-bottom: 6px;
}

.c-card--compact .c-card__footer,
.card-post--compact .card-post-footer {
  padding-top: 6px;
  border-top: none;
}

/* ==========================================================================
   Curated Showcase Section & Cards (Task: AUD-SEO-001 / UI Polish)
   ========================================================================== */
.gl-curated-showcase {
  padding-block: clamp(32px, 4.5vw, 56px);
  background: transparent;
}

.gl-curated-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.gl-curated-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: #ffffff;
  border: var(--card-border, 1px solid var(--nav-border-subtle, #e4e7ec));
  border-radius: var(--card-radius, var(--radius-lg, 18px));
  overflow: hidden;
  box-shadow: var(--card-shadow, var(--shadow-sm, 0 1px 3px rgba(16, 24, 40, 0.04)));
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.28s ease;
}

.gl-curated-card:hover {
  transform: translateY(-4px);
  border-color: var(--nav-brand-border, #bbaaff);
  box-shadow: var(--card-shadow-hover, var(--shadow-xl, 0 16px 36px rgba(41, 30, 94, 0.09)));
}

.gl-curated-card__media {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(110deg, #e9ecef 8%, #f3f4f6 18%, #e9ecef 33%);
  background-size: 200% 100%;
  overflow: hidden;
}

.gl-curated-card__media img,
.gl-curated-card__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gl-curated-card:hover .gl-curated-card__media img,
.gl-curated-card:hover .gl-curated-card__img {
  transform: scale(1.035);
}

.gl-curated-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--nav-brand-main, #4930c9);
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.gl-curated-card__placeholder svg,
.gl-curated-card__placeholder .gl-icon {
  width: 44px;
  height: 44px;
  opacity: 0.65;
}

.gl-curated-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.gl-curated-card__category {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--nav-brand-main, #4930c9);
  margin-bottom: 8px;
  line-height: 1.3;
}

.gl-curated-card__title,
.gl-curated-card h3,
.gl-curated-card .gl-platform-card__title {
  margin: 0 0 10px;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.02em;
  color: var(--nav-text-main, #101828);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.gl-curated-card__title a,
.gl-curated-card h3 a,
.gl-curated-card .gl-platform-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.gl-curated-card__title a:hover,
.gl-curated-card h3 a:hover,
.gl-curated-card .gl-platform-card__title a:hover {
  color: var(--nav-brand-main, #4930c9);
}

.gl-curated-card__excerpt {
  margin: 0 0 18px;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--nav-text-muted, #475467);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  flex-grow: 1;
}

.gl-curated-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid #f1f4f8;
  font-size: 0.78rem;
  margin-top: auto;
}

.gl-curated-card__meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #64748b;
  font-weight: 550;
  font-size: 0.78rem;
}

.gl-curated-card__meta .gl-icon,
.gl-curated-card__meta svg {
  width: 14px;
  height: 14px;
  opacity: 0.75;
}

.gl-curated-card__action {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 750;
  font-size: 0.8rem;
  color: var(--nav-brand-main, #4930c9);
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.gl-curated-card__action .gl-icon,
.gl-curated-card__action svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.gl-curated-card__action:hover {
  color: var(--nav-brand-vibrant, #5b3df5);
}

.gl-curated-card__action:hover .gl-icon,
.gl-curated-card__action:hover svg {
  transform: translateX(3px);
}

@media (max-width: 960px) {
  .gl-curated-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .gl-curated-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .gl-curated-card {
    border-radius: var(--card-radius-compact, 16px);
  }
  .gl-curated-card__body {
    padding: 18px 20px 20px;
  }
}