.billing-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  background: var(--bg, #f8fafc);
  min-height: 100vh;
}

.billing-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.billing-back {
  color: var(--primary, #2563eb);
  text-decoration: none;
  font-size: 0.9rem;
}

.billing-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.billing-plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.billing-plan-card {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1rem;
  position: relative;
}

.billing-plan-card.recommended {
  border-color: #2563eb;
  box-shadow: 0 0 0 1px #2563eb;
}

.billing-plan-card.current {
  background: #eff6ff;
}

.billing-plan-price {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0.5rem 0;
}

.billing-plan-card ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.1rem;
  font-size: 0.85rem;
  color: #475569;
}

.billing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.billing-coupon-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.billing-coupon-form input {
  flex: 1;
  min-width: 140px;
  padding: 0.5rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
}

.billing-usage li,
.billing-invoices li {
  padding: 0.35rem 0;
  font-size: 0.9rem;
}

.billing-trial-badge {
  display: inline-block;
  background: #fef3c7;
  color: #92400e;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.8rem;
  margin-left: 0.5rem;
}

@media (max-width: 600px) {
  .billing-plan-grid { grid-template-columns: 1fr; }
  .billing-actions button { width: 100%; }
}