/* ============================================
   BLOG - Estilos adicionales para Trazas Ingeniería
   ============================================ */

/* ---- Página Blog: Tarjetas de artículos ---- */
.blog-hero-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  margin-bottom: 64px;
  transition: var(--transition);
}
.blog-hero-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}
.blog-hero-card-img {
  position: relative; overflow: hidden;
  min-height: 380px;
}
.blog-hero-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.blog-hero-card:hover .blog-hero-card-img img {
  transform: scale(1.04);
}
.blog-hero-card-body {
  padding: 52px 48px;
  display: flex; flex-direction: column; justify-content: center;
}
.blog-hero-card-body .blog-cat {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent-cyan);
  margin-bottom: 16px;
}
.blog-hero-card-body .blog-cat::before {
  content: ''; display: block;
  width: 20px; height: 2px; background: var(--accent-cyan);
}
.blog-hero-card-body h2 {
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700; line-height: 1.2; margin-bottom: 16px;
  transition: color 0.2s;
}
.blog-hero-card:hover .blog-hero-card-body h2 {
  color: var(--accent-cyan);
}
.blog-hero-card-body .blog-excerpt {
  color: var(--text-secondary); font-size: 0.95rem;
  line-height: 1.75; margin-bottom: 28px;
}
.blog-meta {
  display: flex; align-items: center; gap: 16px;
  font-size: 0.8rem; color: var(--text-muted);
  margin-bottom: 24px;
}
.blog-meta i { color: var(--accent-cyan); }

/* ---- Grid de tarjetas de artículos ---- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex; flex-direction: column;
  cursor: pointer;
}
.blog-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.blog-card-img {
  aspect-ratio: 16/9; overflow: hidden;
  background: linear-gradient(135deg, #0f1a2e, #1a0a2e);
  position: relative;
}
.blog-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.blog-card:hover .blog-card-img img {
  transform: scale(1.06);
}
.blog-card-img .blog-card-cat {
  position: absolute; top: 14px; left: 14px;
  padding: 4px 12px; border-radius: 50px;
  background: rgba(0,212,255,0.85);
  color: #000; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  backdrop-filter: blur(8px);
}
.blog-card-img .blog-card-cat.cat-inox {
  background: rgba(0,212,255,0.85); color: #000;
}
.blog-card-img .blog-card-cat.cat-laser {
  background: rgba(255,107,53,0.85); color: #fff;
}
.blog-card-img .blog-card-cat.cat-soldadura {
  background: rgba(124,58,237,0.85); color: #fff;
}
.blog-card-img .blog-card-cat.cat-alimenticio {
  background: rgba(0,255,136,0.85); color: #000;
}
.blog-card-img .blog-card-cat.cat-proyectos {
  background: rgba(255,200,0,0.85); color: #000;
}
.blog-card-img .blog-card-cat.cat-noticias {
  background: rgba(255,255,255,0.85); color: #000;
}
.blog-card-body {
  padding: 24px;
  display: flex; flex-direction: column; flex: 1;
}
.blog-card-body h3 {
  font-family: var(--font-title);
  font-size: 1.15rem; font-weight: 700;
  line-height: 1.3; margin-bottom: 10px;
  transition: color 0.2s;
}
.blog-card:hover .blog-card-body h3 { color: var(--accent-cyan); }
.blog-card-body p {
  color: var(--text-secondary); font-size: 0.87rem;
  line-height: 1.65; flex: 1; margin-bottom: 20px;
}
.blog-card-footer {
  display: flex; align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px; margin-top: auto;
}
.blog-card-footer .blog-date {
  font-size: 0.78rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
}
.blog-card-footer .blog-date i { color: var(--accent-cyan); font-size: 0.7rem; }
.blog-read-more {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent-cyan); font-size: 0.82rem; font-weight: 600;
  transition: gap 0.3s;
}
.blog-card:hover .blog-read-more { gap: 10px; }

/* ---- Barra de categorías del blog ---- */
.blog-filter-bar {
  display: flex; gap: 8px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 52px;
}
.blog-filter-btn {
  padding: 8px 22px; border-radius: 50px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.87rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
  font-family: var(--font-body);
}
.blog-filter-btn.active,
.blog-filter-btn:hover {
  border-color: var(--border-accent);
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.06);
}

/* ---- Placeholder imagen blog (cuando no hay foto) ---- */
.blog-img-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem; opacity: 0.2;
  background: linear-gradient(135deg, #0f1a2e, #1a0f2e);
}

/* ---- Página de artículo individual ---- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 64px;
  align-items: start;
}
.article-hero-img {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/8;
  margin-bottom: 40px;
  border: 1px solid var(--border-subtle);
}
.article-hero-img img {
  width: 100%; height: 100%; object-fit: cover;
}
.article-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 20px;
}
.article-info-bar {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 20px 0; border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px; color: var(--text-muted); font-size: 0.85rem;
}
.article-info-bar span { display: flex; align-items: center; gap: 6px; }
.article-info-bar i { color: var(--accent-cyan); }
.article-info-bar .article-cat {
  padding: 4px 14px; border-radius: 50px;
  background: rgba(0,212,255,0.1);
  color: var(--accent-cyan); font-weight: 600;
  border: 1px solid rgba(0,212,255,0.2); font-size: 0.78rem;
}

/* Tipografía del cuerpo del artículo */
.article-body { color: var(--text-secondary); line-height: 1.85; }
.article-body h2 {
  font-family: var(--font-title);
  font-size: 1.7rem; font-weight: 700;
  color: var(--text-primary);
  margin: 48px 0 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.article-body h3 {
  font-family: var(--font-title);
  font-size: 1.2rem; font-weight: 700;
  color: var(--text-primary);
  margin: 32px 0 12px;
}
.article-body p { margin-bottom: 20px; font-size: 1rem; }
.article-body ul {
  list-style: none; margin: 20px 0 24px;
  display: flex; flex-direction: column; gap: 10px;
}
.article-body ul li {
  display: flex; align-items: flex-start; gap: 10px;
  color: var(--text-secondary); font-size: 0.97rem;
}
.article-body ul li::before {
  content: '▸'; color: var(--accent-cyan);
  flex-shrink: 0; margin-top: 2px;
}
.article-body strong { color: var(--text-primary); font-weight: 600; }
.article-body .article-highlight {
  background: rgba(0,212,255,0.06);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px; margin: 32px 0;
  color: var(--text-primary); font-size: 1.05rem; font-style: italic;
}

/* Sidebar del artículo */
.article-sidebar { position: sticky; top: 96px; }
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px; margin-bottom: 24px;
}
.sidebar-card h4 {
  font-family: var(--font-title); font-size: 1rem;
  font-weight: 700; margin-bottom: 20px;
  color: var(--accent-cyan); letter-spacing: 0.5px;
  text-transform: uppercase; font-size: 0.82rem;
}
.sidebar-article {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0; border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition); cursor: pointer;
}
.sidebar-article:last-child { border-bottom: none; }
.sidebar-article:hover h5 { color: var(--accent-cyan); }
.sidebar-article-img {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #0f1a2e, #1a0a2e);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; flex-shrink: 0; overflow: hidden;
}
.sidebar-article-img img {
  width: 100%; height: 100%; object-fit: cover;
}
.sidebar-article h5 {
  font-size: 0.85rem; font-weight: 600;
  line-height: 1.35; margin-bottom: 4px; transition: color 0.2s;
}
.sidebar-article span { font-size: 0.75rem; color: var(--text-muted); }

/* CTA sidebar */
.sidebar-cta {
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(124,58,237,0.08));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 32px 28px; text-align: center;
}
.sidebar-cta h4 {
  font-family: var(--font-title); font-size: 1.2rem; font-weight: 700;
  margin-bottom: 10px;
}
.sidebar-cta p { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 20px; }

/* Tags del artículo */
.article-tags {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid var(--border-subtle);
}
.article-tag {
  padding: 6px 16px; border-radius: 50px;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary); font-size: 0.8rem;
  transition: var(--transition); cursor: pointer;
}
.article-tag:hover {
  border-color: var(--border-accent); color: var(--accent-cyan);
  background: rgba(0,212,255,0.05);
}

/* ---- Responsive Blog ---- */
@media (max-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .blog-hero-card { grid-template-columns: 1fr; }
  .blog-hero-card-img { min-height: 280px; }
}
@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-hero-card-body { padding: 32px 28px; }
}