/* ============================================================
   COMPONENT: Feature Card (Diferenciais)
   Sitemap: 04 — Diferenciais · Economia · Tech · Suporte · Sustent.
   ============================================================ */

#diferenciais {
  background: var(--bg);
}

.fgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.fcard {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: border-color .3s, transform .3s;
  position: relative;
  overflow: hidden;
}

.fcard:hover {
  border-color: var(--orange-border);
  transform: translateY(-4px);
}

@media (hover: none) {
  .fcard:hover { transform: none; }
}

.fcard .orb {
  width: 110px;
  height: 110px;
  top: -30px;
  right: -20px;
  opacity: .55;
}

.ficon {
  width: 48px;
  height: 48px;
  background: rgba(255, 73, 0, 0.11);
  border: 1px solid rgba(255, 73, 0, 0.24);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 22px;
  position: relative;
  z-index: 1;
}

.ftitle {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 9px;
  position: relative;
  z-index: 1;
}

.fdesc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* ── Tablet: 2-column ────────────────────────────────────── */
@media (max-width: 768px) {
  .fgrid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .fcard {
    padding: 22px;
  }
}

/* ── Mobile: single column ───────────────────────────────── */
@media (max-width: 480px) {
  .fgrid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .fcard {
    padding: 20px;
  }
  .fdesc {
    font-size: 13px;
  }
}