/* ==========================================================================
   BLOG — página principal (blog/index.html) e artigos (blog/<slug>/index.html).
   Reutiliza .page-hero/.breadcrumb de internal-pages.css e .btn/.eyebrow de
   components.css; aqui ficam apenas os padrões novos desta sprint.
   Índice:
   01. Filtros de categoria (blog/index.html)
   02. Grade e cards de artigo (blog/index.html)
   03. Capa abstrata do card (somente HTML/CSS)
   04. Cabeçalho do artigo (meta: categoria, data, tempo de leitura)
   05. Corpo do artigo (largura de leitura, tipografia)
   06. Sumário interno
   07. Barra de progresso de leitura
   08. Compartilhamento (WhatsApp / copiar link)
   09. CTA do artigo
   10. Leia também
   11. Seção de destaques do Blog na Home
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. Filtros de categoria
   -------------------------------------------------------------------------- */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.blog-filter {
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--color-text-muted);
  background-color: var(--color-white);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.blog-filter:hover,
.blog-filter:focus-visible {
  border-color: var(--color-navy);
  color: var(--color-text);
}

.blog-filter[aria-pressed="true"] {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-text-on-navy);
}

.blog-results {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   02. Grade e cards de artigo
   -------------------------------------------------------------------------- */
.blog-grid {
  display: grid;
  gap: var(--space-6);
}

.blog-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
  background-color: var(--color-white);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card__category {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold-text);
  margin-bottom: var(--space-3);
}

.blog-card__body h2,
.blog-card__body h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-3);
}

.blog-card__excerpt {
  flex-grow: 1;
  margin-bottom: var(--space-4);
  font-size: 0.92rem;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.blog-card__meta svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-navy);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
  margin-top: auto;
}

.blog-card__link:hover,
.blog-card__link:focus-visible {
  border-color: var(--color-navy);
}

@media (min-width: 640px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --------------------------------------------------------------------------
   03. Capa abstrata do card (somente HTML/CSS, sem imagens externas)
   -------------------------------------------------------------------------- */
.blog-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(155deg, var(--color-navy) 0%, var(--color-navy-600) 65%, var(--color-navy-700) 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-card__cover::before {
  content: "";
  position: absolute;
  inset: var(--space-5);
  border: 1px solid rgba(217, 169, 78, 0.3);
  border-radius: var(--radius-sm);
}

.blog-card__cover::after {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  right: -40px;
  bottom: -50px;
  border: 1px solid rgba(247, 245, 241, 0.14);
  border-radius: 50%;
}

.blog-card__cover-icon {
  position: relative;
  z-index: 1;
  width: 42px;
  height: 42px;
  color: var(--color-gold);
}

.blog-card__cover-line {
  position: absolute;
  left: var(--space-6);
  top: var(--space-6);
  width: 34px;
  height: 3px;
  background-color: var(--color-gold);
  border-radius: var(--radius-pill);
}

/* --------------------------------------------------------------------------
   04. Cabeçalho do artigo (meta: categoria, data, tempo de leitura)
   -------------------------------------------------------------------------- */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  font-size: 0.85rem;
  color: var(--color-text-on-navy-muted);
  margin-bottom: var(--space-4);
}

.article-meta svg {
  width: 15px;
  height: 15px;
  margin-right: var(--space-1);
  vertical-align: -2px;
}

/* --------------------------------------------------------------------------
   05. Corpo do artigo (largura de leitura, tipografia)
   -------------------------------------------------------------------------- */
.article-body {
  max-width: 68ch;
  margin-inline: auto;
}

.article-body h2 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

.article-body h3 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

.article-body p {
  margin-bottom: var(--space-4);
  line-height: 1.7;
  color: var(--color-text);
}

.article-body ul,
.article-body ol {
  margin: 0 0 var(--space-5) var(--space-5);
  display: grid;
  gap: var(--space-2);
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  line-height: 1.6;
  color: var(--color-text);
}

.article-body strong {
  color: var(--color-navy);
}

.article-intro {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   06. Sumário interno
   -------------------------------------------------------------------------- */
.article-toc {
  background-color: var(--color-offwhite);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-7);
}

.article-toc h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold-dark);
  margin: 0 0 var(--space-3);
}

.article-toc ol {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding-left: var(--space-5);
}

.article-toc a {
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.94rem;
}

.article-toc a:hover,
.article-toc a:focus-visible {
  color: var(--color-navy);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   07. Barra de progresso de leitura
   -------------------------------------------------------------------------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background-color: var(--color-gold);
  z-index: 150;
  transition: width 0.1s linear;
}

@media (prefers-reduced-motion: reduce) {
  .reading-progress {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   08. Compartilhamento (WhatsApp / copiar link)
   -------------------------------------------------------------------------- */
.article-share {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-7) 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.article-share__label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  margin-right: var(--space-2);
}

.article-share__feedback {
  font-size: 0.85rem;
  color: var(--color-gold-dark);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   09. CTA do artigo
   -------------------------------------------------------------------------- */
.article-cta {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-700) 100%);
  color: var(--color-text-on-navy);
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-6);
  text-align: center;
  margin: var(--space-8) 0;
}

.article-cta h2 {
  color: var(--color-text-on-navy);
  margin-bottom: var(--space-3);
  font-size: 1.4rem;
}

.article-cta p {
  color: var(--color-text-on-navy-muted);
  margin-bottom: var(--space-5);
}

/* --------------------------------------------------------------------------
   10. Leia também
   -------------------------------------------------------------------------- */
.article-related {
  margin-top: var(--space-8);
}

.article-related h2 {
  font-size: 1.2rem;
  margin-bottom: var(--space-5);
}

.article-related__list {
  display: grid;
  gap: var(--space-4);
}

.article-related__item a {
  display: block;
  padding: var(--space-5);
  background-color: var(--color-offwhite);
  border-radius: var(--radius-base);
  font-weight: 700;
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

.article-related__item a:hover,
.article-related__item a:focus-visible {
  background-color: var(--color-offwhite-2);
}

.article-related__item span {
  display: block;
  margin-top: var(--space-2);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-gold-dark);
}

@media (min-width: 640px) {
  .article-related__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   11. Seção de destaques do Blog na Home
   -------------------------------------------------------------------------- */
.blog-preview__cta {
  text-align: center;
  margin-top: var(--space-2);
}