/* ── Knowledge Base Index Page ──────────────────────────────────────────────── */

/* Article grid */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}

/* Article card */
.kb-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  transition:
    border-color 160ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
    background   160ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform    160ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.kb-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(113,112,255,0.3), transparent);
  opacity: 0;
  transition: opacity 160ms;
}
.kb-card:hover {
  border-color: rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.035);
  transform: translateY(-2px);
}
.kb-card:hover::before { opacity: 1; }

.kb-card-inner {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}

/* Meta row: tag + read time */
.kb-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}
.kb-card-tag {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(113,112,255,0.1);
  color: var(--accent);
  border: 1px solid rgba(113,112,255,0.2);
}
.kb-card-read-time {
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: -0.008em;
}

/* Title */
.kb-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 0;
}

/* Description */
.kb-card-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: -0.011em;
  line-height: 1.6;
  margin: 0;
  flex: 1;
  /* Clamp to 3 lines */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Footer: CTA + date */
.kb-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.kb-card-cta {
  font-size: 0.8125rem;
  font-weight: 510;
  color: var(--accent);
  letter-spacing: -0.011em;
  transition: opacity 120ms;
}
.kb-card:hover .kb-card-cta { opacity: 0.8; }
.kb-card-date {
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: -0.008em;
}

/* Bottom CTA block */
.kb-cta-block {
  background: rgba(113,112,255,0.05);
  border: 1px solid rgba(113,112,255,0.15);
  border-radius: 12px;
  padding: 24px 28px;
  backdrop-filter: blur(8px);
}
.kb-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Responsive */
@media (max-width: 580px) {
  .kb-grid { grid-template-columns: 1fr; }
  .kb-cta-inner { flex-direction: column; align-items: flex-start; }
  .kb-cta-inner .btn { width: 100%; justify-content: center; }
}

/* Featured article card */
.kb-card--featured {
  border-color: rgba(113,112,255,0.2);
  background: rgba(113,112,255,0.04);
}
.kb-card--featured:hover {
  border-color: rgba(113,112,255,0.35);
  background: rgba(113,112,255,0.07);
  transform: none;
}
.kb-card--featured::before { opacity: 1; }