/* ============================================
   VTORA — Centro de Conocimiento Técnico CSS
   ============================================ */

.cono-header {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: var(--black);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* ---- LEAD MAGNET ---- */
.cono-featured { padding: 80px 0; }

.cono-featured__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.cono-featured__list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cono-featured__list li {
  font-size: 15px;
  color: var(--grey-light);
  padding-left: 20px;
  position: relative;
}

.cono-featured__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* Preview PDF */
.cono-featured__preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.cono-featured__pdf-cover {
  width: 220px;
  background: var(--black);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  position: relative;
  z-index: 2;
}

.cono-featured__pdf-stripe {
  height: 8px;
  background: var(--orange);
}

.cono-featured__pdf-body {
  padding: 24px 20px 20px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
}

.cono-featured__pdf-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cono-featured__pdf-shadow {
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 180px;
  height: 20px;
  background: rgba(255,107,0,0.2);
  filter: blur(16px);
  border-radius: 50%;
  z-index: 1;
}

/* ---- GRID DE ARTÍCULOS ---- */
.cono-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: rgba(255,255,255,0.04);
}

.cono-card {
  background: var(--black);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.3s;
  position: relative;
}

.cono-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transition: transform 0.3s;
  transform-origin: left;
}

.cono-card:hover { background: rgba(255,107,0,0.04); }
.cono-card:hover::before { transform: scaleX(1); }

.cono-card__cat {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}

.cono-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.2;
  flex: 1;
}

.cono-card__desc {
  font-size: 14px;
  color: var(--grey-mid);
  line-height: 1.6;
}

.cono-card__link {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.06em;
  margin-top: 4px;
}

@media (max-width: 1024px) {
  .cono-featured__inner { grid-template-columns: 1fr; gap: 48px; }
  .cono-featured__preview { display: none; }
  .cono-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .cono-grid { grid-template-columns: 1fr; }
}