/* ═══════════════════════════════════════════
   MODUS RETIS — blog.css
   ═══════════════════════════════════════════ */

/* Nav activo en blog */
.nav-active {
  color: var(--clr-primary) !important;
  font-weight: 700 !important;
}

/* ── Blog Hero ── */
.blog-hero {
  background: var(--clr-dark);
  padding: 140px 0 72px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.blog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 60%, rgba(48,76,211,.35) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 20%, rgba(0,196,204,.2) 0%, transparent 55%);
}
.blog-hero .container { position: relative; z-index: 1; }
.blog-hero .eyebrow   { color: var(--clr-secondary); }
.blog-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -.03em;
}
.blog-hero__sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.6);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Filtros ── */
.blog-main { padding: 64px 0 100px; }

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}
.filter-btn {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: 100px;
  padding: 8px 18px;
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  color: var(--clr-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
}

/* ── Blog Grid ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

/* ── Blog Card ── */
.blog-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--clr-primary);
}

.blog-card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
}
.blog-card--featured .blog-card__img {
  width: 45%;
  flex-shrink: 0;
  aspect-ratio: auto;
}
.blog-card--featured .blog-card__body { flex: 1; }

/* Imagen */
.blog-card__img {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.blog-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.blog-card:hover .blog-card__img img { transform: scale(1.04); }

.blog-card__cat {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--clr-primary);
  color: #fff;
  border-radius: 100px;
  font-size: .72rem;
  font-weight: 700;
  padding: 5px 12px;
  letter-spacing: .05em;
}

/* Body */
.blog-card__body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  color: var(--clr-muted);
  margin-bottom: 12px;
}

.blog-card h2 {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--clr-dark-soft);
  margin-bottom: 12px;
}
.blog-card--featured h2 { font-size: 1.5rem; }

.blog-card__excerpt {
  font-size: .9rem;
  color: var(--clr-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

/* Contenido expandible */
.blog-card__full {
  display: none;
  margin-top: 8px;
}
.blog-card__full.open { display: block; }

.blog-card__full h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-dark-soft);
  margin: 24px 0 10px;
}
.blog-card__full h3:first-child { margin-top: 0; }

.blog-card__full p {
  font-size: .9rem;
  color: var(--clr-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

.blog-card__full ul {
  list-style: none;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.blog-card__full ul li {
  font-size: .875rem;
  color: var(--clr-muted);
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
}
.blog-card__full ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--clr-primary);
}

/* CTA dentro del artículo */
.blog-cta {
  background: var(--clr-surface);
  border-left: 4px solid var(--clr-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.blog-cta p {
  font-weight: 600;
  color: var(--clr-dark-soft);
  font-size: .9rem;
  margin: 0 !important;
}

/* Botón toggle */
.blog-card__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1.5px solid var(--clr-primary);
  border-radius: var(--radius-sm);
  color: var(--clr-primary);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  padding: 8px 16px;
  cursor: pointer;
  margin-top: 16px;
  align-self: flex-start;
  transition: all var(--transition);
}
.blog-card__toggle:hover,
.blog-card__toggle.open {
  background: var(--clr-primary);
  color: #fff;
}

/* Card oculta por filtro */
.blog-card.hidden {
  display: none;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .blog-card--featured {
    flex-direction: column;
  }
  .blog-card--featured .blog-card__img {
    width: 100%;
    aspect-ratio: 16/9;
  }
  .blog-main { padding: 48px 0 72px; }
}

@media (max-width: 680px) {
  .blog-grid           { grid-template-columns: 1fr; }
  .blog-card--featured { grid-column: auto; }
  .blog-hero           { padding: 100px 0 48px; }
  .blog-hero h1        { font-size: 1.8rem; }
  .blog-main           { padding: 40px 0 56px; }
  .blog-card__body     { padding: 20px 18px; }
  .blog-cta            { flex-direction: column; align-items: flex-start; }
  .blog-filters        { gap: 8px; }
  .filter-btn          { font-size: .78rem; padding: 7px 14px; }
}