/* ═══════════════════════════════════════════════════════════════
   IDATA Chile — blog.css
   Estilos para el blog corporativo
═══════════════════════════════════════════════════════════════ */

/* ─── Hero ───────────────────────────────────────────────────── */
.blog-hero {
  background: radial-gradient(ellipse 80% 55% at 50% 0%,
              rgba(30,107,255,0.15) 0%,
              transparent 70%),
              var(--idata-bg-dark);
  padding: calc(var(--navbar-height) + 4rem) 0 3.5rem;
  text-align: center;
}

/* ─── Filtros de categoría ───────────────────────────────────── */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 2rem 0 3rem;
}

.blog-filter-btn {
  background: var(--idata-surface);
  border: 1px solid var(--idata-border);
  color: var(--idata-muted);
  border-radius: 999px;
  padding: 0.4rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.blog-filter-btn:hover,
.blog-filter-btn.active {
  background: var(--idata-blue);
  border-color: var(--idata-blue);
  color: #fff;
}

/* ─── Grid de artículos ──────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* ─── Card de artículo ───────────────────────────────────────── */
.blog-card {
  background: var(--idata-surface);
  border: 1px solid var(--idata-border);
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
}

.blog-card:hover {
  transform: translateY(-5px);
  border-color: rgba(30,107,255,0.4);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3), 0 0 20px rgba(30,107,255,0.08);
}

.blog-card-cover {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  flex-shrink: 0;
}

.blog-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.blog-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid;
}

.blog-tag--cyber    { color: #10b981; background: rgba(16,185,129,0.1);  border-color: rgba(16,185,129,0.25); }
.blog-tag--seo      { color: #f97316; background: rgba(249,115,22,0.1);  border-color: rgba(249,115,22,0.25); }
.blog-tag--ia       { color: #8b5cf6; background: rgba(139,92,246,0.1);  border-color: rgba(139,92,246,0.25); }
.blog-tag--datos    { color: #06b6d4; background: rgba(6,182,212,0.1);   border-color: rgba(6,182,212,0.25);  }
.blog-tag--negocio  { color: #f59e0b; background: rgba(245,158,11,0.1);  border-color: rgba(245,158,11,0.25); }

.blog-read-time {
  font-size: 0.75rem;
  color: var(--idata-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.blog-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--idata-white);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.blog-card-excerpt {
  font-size: 0.84rem;
  color: var(--idata-muted);
  line-height: 1.55;
  flex: 1;
  margin-bottom: 1rem;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--idata-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--idata-border);
}

.blog-card-date { display: flex; align-items: center; gap: 0.3rem; }
.blog-card-cta  { color: var(--idata-blue-light); font-weight: 600; display: flex; align-items: center; gap: 0.3rem; }

/* ─── Artículo individual ────────────────────────────────────── */
.article-hero {
  background: radial-gradient(ellipse 70% 50% at 50% 0%,
              rgba(30,107,255,0.12) 0%,
              transparent 70%),
              var(--idata-bg-dark);
  padding: calc(var(--navbar-height) + 3rem) 0 3rem;
}

.article-breadcrumb {
  font-size: 0.8rem;
  color: var(--idata-muted);
  margin-bottom: 1.5rem;
}

.article-breadcrumb a { color: var(--idata-muted); text-decoration: none; }
.article-breadcrumb a:hover { color: var(--idata-blue-light); }
.article-breadcrumb .sep { margin: 0 0.4rem; }

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.article-title {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--idata-white);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-lead {
  font-size: 1.05rem;
  color: var(--idata-muted);
  line-height: 1.65;
  max-width: 680px;
}

/* ─── Contenido del artículo ─────────────────────────────────── */
.article-body {
  padding: 4rem 0;
}

.article-content {
  max-width: 720px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--idata-white);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--idata-border);
}

.article-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--idata-white);
  margin: 1.75rem 0 0.75rem;
}

.article-content p {
  color: var(--idata-text);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.article-content ul, .article-content ol {
  color: var(--idata-text);
  font-size: 0.95rem;
  line-height: 1.7;
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.article-content li { margin-bottom: 0.4rem; }

.article-content strong { color: var(--idata-white); }

.article-content a {
  color: var(--idata-blue-light);
  text-decoration: underline;
}

.article-callout {
  background: rgba(30,107,255,0.07);
  border: 1px solid rgba(30,107,255,0.2);
  border-left: 3px solid var(--idata-blue);
  border-radius: 0 0.75rem 0.75rem 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--idata-text);
  line-height: 1.6;
}

.article-callout strong { color: var(--idata-blue-light); }

/* ─── Sidebar ────────────────────────────────────────────────── */
.article-sidebar {
  position: sticky;
  top: calc(var(--navbar-height) + 1.5rem);
}

.sidebar-card {
  background: var(--idata-surface);
  border: 1px solid var(--idata-border);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.sidebar-card-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--idata-muted);
  margin-bottom: 1rem;
}

.sidebar-toc {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-toc a {
  font-size: 0.84rem;
  color: var(--idata-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.5rem;
  transition: all 0.2s;
}

.sidebar-toc a:hover {
  color: var(--idata-blue-light);
  border-left-color: var(--idata-blue);
}

/* ─── CTA artículo ───────────────────────────────────────────── */
.article-cta {
  background: linear-gradient(135deg, rgba(30,107,255,0.1), rgba(30,107,255,0.04));
  border: 1px solid rgba(30,107,255,0.2);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  margin-top: 3rem;
}

.article-cta h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--idata-white);
  margin-bottom: 0.5rem;
}

.article-cta p {
  font-size: 0.88rem;
  color: var(--idata-muted);
  margin-bottom: 1.25rem;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 991.98px) {
  .article-sidebar { position: static; }
  .blog-grid { grid-template-columns: 1fr; }
}

@media (max-width: 575.98px) {
  .blog-grid { grid-template-columns: 1fr; }
}