/* ===================================================
   features.css - 功能页专属样式
   =================================================== */

/* ---------- Feature Detail List ---------- */
.feat-detail-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feat-detail {
  display: grid;
  grid-template-columns: 64px 1fr 160px;
  gap: 28px;
  align-items: center;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  transition: transform var(--transition), border-color var(--transition);
}

.feat-detail:hover {
  transform: translateY(-3px);
  border-color: var(--border-active);
}

.feat-detail-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.feat-detail-icon.blue   { background: rgba(26, 110, 245, 0.15); }
.feat-detail-icon.green  { background: rgba(0, 212, 170, 0.15); }
.feat-detail-icon.purple { background: rgba(139, 92, 246, 0.15); }
.feat-detail-icon.orange { background: rgba(245, 158, 11, 0.15); }

.feat-detail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.feat-detail-head h3 {
  font-size: 1.15rem;
}

.feat-detail-body p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feat-detail-metric {
  text-align: center;
  padding: 20px;
  background: rgba(26, 110, 245, 0.06);
  border: 1px solid rgba(26, 110, 245, 0.15);
  border-radius: 14px;
}

.metric-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Use Cases ---------- */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.usecase-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition), border-color var(--transition);
}

.usecase-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
}

.uc-emoji {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.usecase-card h3 {
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.uc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.uc-list li {
  font-size: 0.87rem;
  color: var(--text-secondary);
  padding-left: 4px;
  position: relative;
  line-height: 1.5;
}

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 8px 32px rgba(26, 110, 245, 0.2);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-header {
  margin-bottom: 28px;
}

.pricing-name {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}

.price-val {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.price-period {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-features li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 4px;
}

.pricing-features li.disabled {
  color: var(--text-muted);
  opacity: 0.55;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .usecase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .feat-detail {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 24px;
  }

  .feat-detail-metric {
    width: fit-content;
  }

  .usecase-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }
}