.billing-admin-head,
.billing-admin-section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.billing-admin-head { margin-bottom: 20px; }
.billing-admin-head h2,
.billing-admin-section-head h3 { margin: 0 0 5px; color: var(--text-primary); }
.billing-admin-head p,
.billing-admin-section-head p { margin: 0; color: var(--text-tertiary); font-size: 13px; }
.billing-admin-stats { margin-bottom: 20px; }
.billing-admin-section { margin-top: 20px; padding: 20px; border: 1px solid var(--border-light); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.billing-admin-section-head { margin-bottom: 16px; }
.billing-plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 14px; }
.billing-plan-card { position: relative; padding: 18px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--gray-50); }
.billing-plan-card.is-inactive { opacity: .68; }
.billing-plan-card.is-recommended { border-color: #a5b4fc; box-shadow: 0 0 0 2px #eef2ff inset; }
.billing-plan-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.billing-chip { display: inline-flex; padding: 3px 8px; border-radius: 999px; background: #eef2ff; color: #4f46e5; font-size: 11px; font-weight: 700; }
.billing-chip.muted { background: #e5e7eb; color: #64748b; }
.billing-chip.success { background: #dcfce7; color: #15803d; }
.billing-plan-card h4 { margin: 0; font-size: 17px; }
.billing-plan-price { margin: 10px 0 8px; color: #4f46e5; font-size: 22px; font-weight: 750; }
.billing-plan-card p { min-height: 38px; margin: 0 0 12px; color: var(--text-tertiary); font-size: 12px; line-height: 1.55; }
.billing-limit-list { display: grid; gap: 5px; margin: 0 0 14px; padding: 0; color: var(--text-secondary); font-size: 12px; list-style: none; }
.billing-plan-actions,
.billing-order-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.billing-order-actions button { padding: 5px 9px; border: 1px solid var(--border); border-radius: 6px; background: #fff; color: var(--text-secondary); cursor: pointer; }
.billing-order-actions button.primary { border-color: #4f46e5; background: #4f46e5; color: #fff; }
.billing-order-actions button.danger { border-color: #fecaca; color: #b91c1c; }
.billing-order-main strong,
.billing-order-main span { display: block; }
.billing-order-main span { margin-top: 3px; color: var(--text-tertiary); font-size: 11px; }
.billing-settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.billing-settings-grid label { display: grid; gap: 7px; color: var(--text-secondary); font-size: 12px; font-weight: 650; }
.billing-settings-grid input,
.billing-settings-grid textarea,
.billing-plan-dialog input,
.billing-plan-dialog select,
.billing-plan-dialog textarea { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff; color: var(--text-primary); font: inherit; }
.billing-settings-grid textarea,
.billing-plan-dialog textarea { resize: vertical; }
.billing-field-wide { grid-column: 1 / -1; }
.billing-checks { display: flex; align-items: center; gap: 18px; padding-top: 25px; }
.billing-checks label { display: inline-flex; align-items: center; gap: 7px; }
.billing-checks input { width: auto; }
.billing-plan-dialog .dialog-body { overflow-y: auto; }
.billing-action-description { margin: 0 0 16px; padding: 11px 12px; border-radius: 8px; background: #f8fafc; color: var(--text-secondary); font-size: 12px; line-height: 1.6; }

@media (max-width: 768px) {
  .billing-admin-head,
  .billing-admin-section-head { align-items: flex-start; flex-direction: column; }
  .billing-settings-grid { grid-template-columns: 1fr; }
  .billing-field-wide { grid-column: auto; }
}