/* ============================================================
   BLOG — Editorial style
   Tipografía: Poppins (títulos) · Zain (cuerpo/excerpts)
   ============================================================ */

:root {
  --cat-ciencia:    #2563eb;
  --cat-economia:   #16a34a;
  --cat-ia:         #7c3aed;
  --cat-actualidad: #ea580c;
  --dark:  #0f172a;
  --light: #f8fafc;
  --muted: #64748b;
  --line:  #e2e8f0;
}

/* ── Header editorial ──────────────────────────────────────── */

.blog-header {
  background: #fff;
  padding: 130px 3rem 0;
  border-bottom: 1px solid var(--line);
}

.blog-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

.blog-header-text {}

.blog-kicker {
  font-family: 'Poppins', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 0.6rem;
}

.blog-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(4.5rem, 10vw, 8.5rem);
  font-weight: 900;
  color: var(--dark);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 0;
}

.blog-subtitle {
  font-family: 'Zain', sans-serif;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--muted);
  max-width: 380px;
  line-height: 1.65;
  margin-top: 1.2rem;
}

.blog-header-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  padding-bottom: 0.5rem;
  flex-shrink: 0;
}

.blog-stat {
  font-family: 'Poppins', sans-serif;
  font-size: 0.78rem;
  color: #94a3b8;
  letter-spacing: 0.04em;
}

.blog-stat strong {
  color: var(--dark);
  font-weight: 700;
}

/* ── Filtros de categoría ───────────────────────────────────── */

.blog-filters {
  position: sticky;
  top: 76px;
  z-index: 300;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.blog-filters-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 3rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.blog-filters-inner::-webkit-scrollbar { display: none; }

.f-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Poppins', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  border: 1.5px solid var(--line);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.f-pill:hover {
  border-color: #94a3b8;
  color: var(--dark);
}

.f-pill.active {
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
}

.f-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Zona de contenido ─────────────────────────────────────── */

.blog-content {
  background: var(--light);
  padding: 3rem 3rem 6rem;
}

.blog-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Tarjeta base ──────────────────────────────────────────── */

.post {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1),
              box-shadow 0.3s cubic-bezier(.4,0,.2,1);
}

.post:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}

/* ── Artículo destacado ────────────────────────────────────── */

.post--featured {
  background: var(--dark);
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 380px;
}

.post--featured .post-deco {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 3rem;
}

/* Gran número decorativo en el lado izquierdo del featured */
.post--featured .post-deco::before {
  content: '01';
  font-family: 'Poppins', sans-serif;
  font-size: 14rem;
  font-weight: 900;
  color: rgba(255,255,255,0.04);
  position: absolute;
  line-height: 1;
  left: -1rem;
  bottom: -2rem;
  letter-spacing: -0.05em;
  pointer-events: none;
}

.featured-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Poppins', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50px;
  padding: 0.35rem 0.85rem;
}

.featured-tag span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cat-ciencia);
}

.post--featured .post-body {
  padding: 3.5rem 3.5rem 3.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
}

.post--featured .post-cat {
  font-family: 'Poppins', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cat-ciencia);
}

.post--featured .post-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.28;
  margin: 0;
}

.post--featured .post-excerpt {
  font-family: 'Zain', sans-serif;
  font-size: 1.05rem;
  font-weight: 400;
  color: #94a3b8;
  line-height: 1.7;
  margin: 0;
}

.post--featured .post-meta {
  font-family: 'Zain', sans-serif;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.3);
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.post--featured .post-meta span { color: rgba(255,255,255,0.2); font-size: 0.7rem; }

.post--featured .post-read-link {
  color: #fff;
  opacity: 0.85;
}

.post--featured .post-read-link:hover {
  opacity: 1;
}

/* ── Grid asimétrico ───────────────────────────────────────── */

.posts-grid {
  display: grid;
  grid-template-columns: 3fr 2fr 2fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}

/* Card 1 ocupa toda la primera fila col 1 (doble alto) */
.post--standard:nth-child(1) {
  grid-row: span 2;
}

/* ── Tarjeta estándar ──────────────────────────────────────── */

.post--standard {
  background: #fff;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}

/* Barra de color superior en lugar de imagen */
.post-accent {
  height: 5px;
  border-radius: 16px 16px 0 0;
  flex-shrink: 0;
}

.post-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  flex: 1;
}

/* Número del artículo — decorativo, muy sutil */
.post-num {
  font-family: 'Poppins', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  color: #cbd5e1;
  letter-spacing: 0.1em;
  margin-bottom: -0.2rem;
}

.post-cat {
  font-family: 'Poppins', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.post-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.42;
  margin: 0;
  flex: 1;
}

/* Cards de doble alto tienen título más grande */
.post--standard:nth-child(1) .post-title {
  font-size: 1.28rem;
}

.post-excerpt {
  font-family: 'Zain', sans-serif;
  font-size: 0.97rem;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

.post-meta {
  font-family: 'Zain', sans-serif;
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.post-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #cbd5e1;
  flex-shrink: 0;
}

/* ── Overlay "Disponible próximamente" ─────────────────────── */

.post-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.86);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  transform: translateY(100%);
  transition: transform 0.38s cubic-bezier(.4,0,.2,1);
  z-index: 20;
  border-radius: inherit;
}

.post:hover .post-overlay {
  transform: translateY(0);
}

.post-overlay i {
  font-size: 1.8rem;
  color: #60a5fa;
}

.post-overlay p {
  font-family: 'Poppins', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  margin: 0;
  letter-spacing: 0.02em;
}

/* ── Colores de categoría ──────────────────────────────────── */

.cat-ciencia    { color: var(--cat-ciencia); }
.cat-economia   { color: var(--cat-economia); }
.cat-ia         { color: var(--cat-ia); }
.cat-actualidad { color: var(--cat-actualidad); }

.accent-ciencia    { background: var(--cat-ciencia); }
.accent-economia   { background: var(--cat-economia); }
.accent-ia         { background: var(--cat-ia); }
.accent-actualidad { background: var(--cat-actualidad); }

.dot-ciencia    { background: var(--cat-ciencia); }
.dot-economia   { background: var(--cat-economia); }
.dot-ia         { background: var(--cat-ia); }
.dot-actualidad { background: var(--cat-actualidad); }

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: 1fr 1fr;
  }
  .post--standard:nth-child(1) {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 768px) {
  .blog-header { padding: 110px 1.5rem 0; }
  .blog-header-inner { flex-direction: column; align-items: flex-start; }
  .blog-header-stats { align-items: flex-start; flex-direction: row; gap: 1.2rem; }
  .blog-filters-inner { padding: 0.75rem 1.5rem; flex-wrap: wrap; gap: 0.4rem; }
  .blog-content { padding: 2rem 1.5rem 5rem; }
  .post--featured { grid-template-columns: 1fr; }
  .post--featured .post-deco { min-height: 160px; padding: 2rem; }
  .post--featured .post-body { padding: 2rem 1.75rem; }
  .posts-grid {
    grid-template-columns: 1fr;
  }
  .post--standard:nth-child(1) {
    grid-column: span 1;
  }
}

@media (max-width: 500px) {
  .blog-title { font-size: 4rem; }
}