/* =================================================================
   CÓDIGO VACÍO · blog.css
   Estilos específicos del blog. Hereda las variables de styles.css.
   Cargar SIEMPRE después de styles.css.
   ================================================================= */

/* ---------- Cabecera de página del blog ---------- */
.page-hero{ padding-top: clamp(40px, 7vw, 72px); padding-bottom: clamp(28px, 4vw, 40px); }
.page-hero .eyebrow{ margin-bottom: 18px; }
.page-title{ font-size: clamp(2.2rem, 7vw, 3.8rem); letter-spacing: -.03em; }
.page-intro{
  margin-top: 18px; max-width: 60ch; color: var(--text-secondary);
  font-size: clamp(1.05rem, 2.6vw, 1.22rem);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{ padding-top: 20px; }
.breadcrumb ol{ display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb li{ display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb a, .breadcrumb span{
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .02em;
  color: var(--text-secondary);
}
.breadcrumb a{ transition: color var(--t-fast); }
.breadcrumb a:hover{ color: var(--accent); }
.breadcrumb li[aria-current] span{ color: var(--text-primary); }
.breadcrumb-sep{ color: var(--border); }

/* ---------- Navegación de categorías (chips) ---------- */
.cat-nav{ margin-block: clamp(24px, 4vw, 40px); }
.cat-nav-list{ display: flex; flex-wrap: wrap; gap: 10px; }
.cat-chip{
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 16px; border: 1px solid var(--border); border-radius: 999px;
  font-size: .9rem; color: var(--text-secondary); background: var(--surface);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
  cursor: pointer;
}
.cat-chip:hover{ color: var(--text-primary); border-color: var(--text-secondary); }
.cat-chip[aria-current="page"],
.cat-chip.is-active{
  color: #0B0B0D; background: var(--accent); border-color: var(--accent);
}
.cat-chip .count{
  font-family: var(--font-mono); font-size: .72rem; opacity: .7;
}

/* ---------- Artículo destacado ---------- */
.featured{
  display: grid; grid-template-columns: 1fr; gap: 0;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); margin-bottom: clamp(40px, 6vw, 64px);
  transition: border-color var(--t);
}
.featured:hover{ border-color: var(--accent-line); }
.featured-media{ overflow: hidden; aspect-ratio: 16 / 9; background: var(--surface-light); }
.featured-media img{ width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.featured:hover .featured-media img{ transform: scale(1.03); }
.featured-body{ padding: clamp(24px, 4vw, 40px); display: flex; flex-direction: column; gap: 14px; }
.badge{
  display: inline-flex; align-items: center; gap: 7px; align-self: flex-start;
  padding: 6px 13px; border-radius: 999px; font-family: var(--font-mono);
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
}
.badge-featured{ background: var(--accent); color: #0B0B0D; }
.badge-dot{ width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.featured-title{ font-size: clamp(1.6rem, 4.4vw, 2.6rem); line-height: 1.08; }
.featured-title a{ transition: color var(--t-fast); }
.featured-title a:hover{ color: var(--accent); }
.featured-excerpt{ color: var(--text-secondary); font-size: 1.05rem; max-width: 60ch; }

/* ---------- Meta de post (categoría · fecha · lectura) ---------- */
.post-meta{
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px;
  font-family: var(--font-mono); font-size: .78rem; color: var(--text-secondary);
}
.post-meta .cat{ color: var(--accent); text-transform: uppercase; letter-spacing: .1em; }
.post-meta .dot{ color: var(--border); }

/* ---------- Grid de posts ---------- */
.post-grid{ display: grid; gap: 20px; grid-template-columns: 1fr; }
.post-card{
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform var(--t), border-color var(--t);
}
.post-card:hover{ transform: translateY(-5px); border-color: var(--accent-line); }
.post-card-media{ display: block; overflow: hidden; aspect-ratio: 16 / 9; background: var(--surface-light); position: relative; }
.post-card-cat{
  position: absolute; top: 12px; left: 12px; z-index: 1;
  padding: 5px 11px; border-radius: 999px;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em;
  text-transform: uppercase; font-weight: 600;
  color: var(--accent); background: rgba(11, 11, 13, .72);
  border: 1px solid var(--accent-line);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.post-card-media img{ width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.post-card:hover .post-card-media img{ transform: scale(1.05); }
.post-card-body{ display: flex; flex-direction: column; gap: 10px; padding: 22px; flex: 1; }
.post-card-title{ font-size: 1.22rem; line-height: 1.2; }
.post-card-title a{ transition: color var(--t-fast); }
.post-card-title a:hover{ color: var(--accent); }
.post-card-excerpt{ color: var(--text-secondary); font-size: .95rem; flex: 1; }
.post-card[hidden]{ display: none; }

.empty-state{
  padding: 48px 24px; text-align: center; color: var(--text-secondary);
  border: 1px dashed var(--border); border-radius: var(--radius);
}

/* =================================================================
   PÁGINA DE ARTÍCULO
   ================================================================= */
.article{ padding-bottom: var(--space-section); }
.article-shell{ max-width: 760px; margin-inline: auto; } /* medida de lectura óptima */
.article-header{ padding-top: clamp(20px, 3vw, 32px); margin-bottom: clamp(28px, 4vw, 40px); }
.article-title{
  font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1.06; letter-spacing: -.025em;
  margin: 16px 0 18px;
}
.article-excerpt{ font-size: clamp(1.1rem, 2.8vw, 1.3rem); color: var(--text-secondary); }
.article-hero{
  margin: clamp(24px, 4vw, 36px) 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); aspect-ratio: 16 / 9; background: var(--surface);
}
.article-hero img{ width: 100%; height: 100%; object-fit: cover; }

/* Tabla de contenidos */
.toc{
  margin: 0 0 clamp(28px, 4vw, 40px); padding: 22px 24px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.toc-title{
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--text-secondary); margin-bottom: 14px;
}
.toc ol{ display: grid; gap: 8px; counter-reset: toc; }
.toc li{ counter-increment: toc; }
.toc a{
  display: flex; gap: 12px; color: var(--text-secondary); font-size: .98rem;
  transition: color var(--t-fast);
}
.toc a::before{
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono); font-size: .8rem; color: var(--accent); flex: none;
}
.toc a:hover, .toc a.active{ color: var(--text-primary); }
.toc a.active::before{ color: var(--accent-secondary); }

/* Cuerpo del artículo (tipografía de lectura) */
.prose{ font-size: 1.12rem; line-height: 1.75; color: #d7d7dc; }
.prose > * + *{ margin-top: 1.35em; }
.prose h2{
  scroll-margin-top: 100px; font-size: clamp(1.5rem, 4vw, 2rem);
  margin-top: 2.2em; padding-top: .3em; letter-spacing: -.02em;
}
.prose h3{ scroll-margin-top: 100px; font-size: 1.3rem; margin-top: 1.8em; }
.prose a{ color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--accent-line); }
.prose a:hover{ text-decoration-color: var(--accent); }
.prose strong{ color: var(--text-primary); }
.prose ul, .prose ol{ padding-left: 1.3em; display: grid; gap: .5em; }
.prose ul{ list-style: disc; }
.prose ol{ list-style: decimal; }
.prose li::marker{ color: var(--accent); }
.prose blockquote{
  margin: 1.6em 0; padding: 4px 0 4px 22px; border-left: 3px solid var(--accent);
  color: var(--text-primary); font-size: 1.2rem; font-style: normal;
}
.prose code{
  font-family: var(--font-mono); font-size: .88em; background: var(--surface-light);
  border: 1px solid var(--border); border-radius: 6px; padding: .12em .4em;
}
.prose pre{
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 20px; overflow-x: auto; font-size: .92rem; line-height: 1.6;
}
.prose pre code{ background: none; border: 0; padding: 0; }
.prose figure{ margin: 1.8em 0; }
.prose figure img{ border-radius: var(--radius-sm); border: 1px solid var(--border); }
.prose figcaption{ margin-top: 10px; font-size: .85rem; color: var(--text-secondary); text-align: center; }
.prose hr{ border: 0; border-top: 1px solid var(--border); margin: 2.4em 0; }

/* Callout "en vivo" para enlazar desde los lives */
.callout{
  margin: 1.8em 0; padding: 20px 22px; border-radius: var(--radius);
  background: var(--accent-dim); border: 1px solid var(--accent-line);
  display: flex; gap: 14px; align-items: flex-start;
}
.callout svg{ width: 24px; height: 24px; flex: none; stroke: var(--accent); fill: none; stroke-width: 1.7; }
.callout p{ margin: 0; color: var(--text-primary); }

/* Etiquetas / keywords */
.tag-list{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2.4em; }
.tag{
  font-family: var(--font-mono); font-size: .78rem; color: var(--text-secondary);
  padding: 5px 12px; border: 1px solid var(--border); border-radius: 999px;
}

/* Compartir */
.share{ display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 2em; }
.share-label{ font-family: var(--font-mono); font-size: .78rem; color: var(--text-secondary); letter-spacing: .06em; }
.share-btn{
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px;
  border: 1px solid var(--border); border-radius: 999px; font-size: .88rem;
  color: var(--text-secondary); background: transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.share-btn:hover{ color: var(--text-primary); border-color: var(--text-secondary); }
.share-btn svg{ width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.7; }

/* Caja de autor (E-E-A-T) */
.author-box{
  display: flex; gap: 18px; align-items: flex-start; margin-top: clamp(40px, 6vw, 64px);
  padding: 26px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.author-box img{
  width: 72px; height: 72px; border-radius: 50%; flex: none;
  border: 1px solid var(--border); object-fit: cover;
}
.author-box .name{ font-size: 1.15rem; font-weight: 700; }
.author-box .role{ font-family: var(--font-mono); font-size: .78rem; color: var(--accent); margin: 4px 0 10px; }
.author-box .bio{ color: var(--text-secondary); font-size: .95rem; }
.author-box .author-links{ display: flex; gap: 12px; margin-top: 12px; }
.author-box .author-links a{ font-size: .85rem; color: var(--text-secondary); transition: color var(--t-fast); }
.author-box .author-links a:hover{ color: var(--accent); }

/* Prev / Next */
.article-nav{
  display: grid; gap: 12px; grid-template-columns: 1fr; margin-top: clamp(40px, 6vw, 56px);
}
.article-nav a{
  display: block; padding: 20px 22px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--surface);
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.article-nav a:hover{ border-color: var(--accent-line); transform: translateY(-3px); }
.article-nav .dir{ font-family: var(--font-mono); font-size: .74rem; color: var(--text-secondary); letter-spacing: .08em; text-transform: uppercase; }
.article-nav .t{ display: block; margin-top: 8px; font-weight: 600; color: var(--text-primary); }
.article-nav .next{ text-align: right; }

/* Relacionados */
.related{ margin-top: var(--space-section); }
.related-title{ font-size: clamp(1.4rem, 4vw, 1.8rem); margin-bottom: 24px; }

/* Barra de progreso de lectura */
.read-progress{
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--accent); z-index: 110; transition: width .1s linear;
}
@media (prefers-reduced-motion: reduce){ .read-progress{ transition: none; } }

/* ---------- Responsive del blog ---------- */
@media (min-width: 640px){
  .post-grid{ grid-template-columns: repeat(2, 1fr); }
  .article-nav{ grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px){
  .featured{ grid-template-columns: 1.15fr .85fr; }
  .featured-media{ aspect-ratio: auto; height: 100%; min-height: 340px; }
}
@media (min-width: 1080px){
  .post-grid{ grid-template-columns: repeat(3, 1fr); }
}

/* =================================================================
   AMPLIACIÓN v2 · destacado en home, TOC lateral, búsqueda,
   compartir, copiar código y CTA de artículo.
   ================================================================= */

/* ---------- Cajón destacado en el HOME ---------- */
.home-featured{ padding-block: clamp(48px, 8vw, 88px); border-bottom: 1px solid var(--border); }
.home-featured-head{
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 20px;
  margin-bottom: clamp(24px, 4vw, 36px);
}
.home-featured-head .section-index{ margin-bottom: 0; }
.home-featured-head .section-title{ font-size: clamp(1.8rem, 5vw, 2.6rem); }
.home-featured-all{
  margin-left: auto; font-family: var(--font-mono); font-size: .85rem;
  color: var(--text-secondary); transition: color var(--t-fast);
}
.home-featured-all:hover{ color: var(--accent); }
.home-featured .featured{ margin-bottom: 24px; }
.home-featured .cat-nav{ margin: 0; }
.home-latest-head{
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  margin: clamp(32px, 5vw, 44px) 0 20px;
  padding-top: clamp(28px, 4vw, 36px); border-top: 1px solid var(--border);
}
.home-latest-title{ font-size: clamp(1.2rem, 3.4vw, 1.5rem); letter-spacing: -.01em; }
.home-latest-head .home-featured-all{ margin-left: 0; white-space: nowrap; }

/* ---------- Búsqueda del blog ---------- */
.blog-search{ position: relative; max-width: 520px; margin-bottom: clamp(20px, 3vw, 28px); }
.blog-search svg{
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; stroke: var(--text-secondary); fill: none; stroke-width: 1.8;
  pointer-events: none;
}
.blog-search input{
  width: 100%; padding: 13px 16px 13px 46px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-primary); font: inherit; transition: border-color var(--t-fast), background var(--t-fast);
}
.blog-search input::placeholder{ color: #6b6b74; }
.blog-search input:focus{ outline: none; border-color: var(--accent); background: var(--surface-light); }

/* ---------- Artículo: layout con TOC lateral fija ---------- */
.article-layout{ max-width: 760px; margin-inline: auto; }
.toc-rail{ display: none; }

/* TOC móvil como acordeón (details) */
details.toc-inline{ padding: 0; }
details.toc-inline > summary{
  list-style: none; cursor: pointer; display: flex; align-items: center;
  justify-content: space-between; gap: 12px; padding: 18px 22px;
}
details.toc-inline > summary::-webkit-details-marker{ display: none; }
details.toc-inline > summary .toc-title{ margin: 0; }
details.toc-inline > summary::after{
  content: "+"; font-family: var(--font-mono); color: var(--accent); font-size: 1.2rem;
}
details.toc-inline[open] > summary::after{ content: "−"; }
details.toc-inline > ol{ padding: 0 22px 22px; }

@media (min-width: 1120px){
  .article-layout{
    max-width: 1120px; display: grid; align-items: start;
    grid-template-columns: minmax(0, 1fr) 264px; gap: 56px;
  }
  .toc-rail{ display: block; position: sticky; top: 96px; }
  .toc-rail .toc{ margin: 0; }
  details.toc-inline{ display: none; }
  /* la cabecera/hero/pie viven en la columna izquierda y respetan la medida de lectura */
  .article-main{ min-width: 0; }
  .article-main > *{ max-width: 760px; }
}

/* ---------- Copiar código ---------- */
.prose pre{ position: relative; }
.code-copy{
  position: absolute; top: 10px; right: 10px; display: inline-flex; align-items: center;
  gap: 6px; padding: 6px 10px; font-family: var(--font-mono); font-size: .72rem;
  color: var(--text-secondary); background: var(--background);
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast); opacity: 0;
}
.prose pre:hover .code-copy, .code-copy:focus-visible{ opacity: 1; }
.code-copy:hover{ color: var(--accent); border-color: var(--accent-line); }
.code-copy svg{ width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 1.8; }
@media (hover: none){ .code-copy{ opacity: 1; } } /* táctil: siempre visible */

/* ---------- Compartir (marcas) ---------- */
.share-btn.x:hover{ color: #fff; border-color: #fff; }
.share-btn.wa:hover{ color: #25D366; border-color: #25D366; }
.share-btn.li:hover{ color: #4aa3df; border-color: #4aa3df; }

/* ---------- CTA de newsletter dentro del artículo ---------- */
.article-cta{
  margin-top: clamp(40px, 6vw, 56px); padding: clamp(24px, 4vw, 34px);
  border-radius: var(--radius); border: 1px solid var(--accent-line);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(184,255,90,.07), transparent 60%),
    var(--surface);
}
.article-cta h2{ font-size: clamp(1.3rem, 3.5vw, 1.7rem); margin: 0 0 8px; }
.article-cta p{ color: var(--text-secondary); margin: 0 0 18px; max-width: 52ch; }
.article-cta form{ display: flex; flex-wrap: wrap; gap: 10px; }
.article-cta input{
  flex: 1 1 220px; padding: 13px 15px; border-radius: var(--radius-sm);
  background: var(--background); border: 1px solid var(--border); color: var(--text-primary); font: inherit;
}
.article-cta input:focus{ outline: none; border-color: var(--accent); }
.article-cta .form-message{ flex-basis: 100%; margin: 4px 0 0; }