#billing-panel h1 { margin-bottom: 12px; }
#billing-panel h2 { font-size: 20px; }
#billing-panel h3 { margin-top: 0; }
#billing-panel .billing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
#billing-panel fieldset { border: 1px solid #dce3db; border-radius: 8px; padding: 18px; min-width: 0; }
#billing-panel legend { font-weight: 600; padding: 0 6px; }
#billing-panel .billing-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 16px 0; }
#billing-panel .billing-actions label { margin: 0; }
#billing-panel .billing-invoice { padding: 20px 0; border-bottom: 1px solid #dce3db; }
#billing-panel .billing-table-scroll { overflow-x: auto; }
#billing-panel table { width: 100%; min-width: 560px; border-collapse: collapse; text-align: left; }
#billing-panel th, #billing-panel td { padding: 12px; border-bottom: 1px solid #e1e6df; vertical-align: top; overflow-wrap: anywhere; }
#billing-panel th { background: #edf2e9; font-size: 12px; }
#billing-panel td { font-size: 13px; }
#billing-panel .billing-error { color: #9b3d2b; }
#billing-panel #billing-detail:not(:empty) { padding: 20px; margin-top: 20px; background: #f4f5f1; border-radius: 8px; }
#billing-panel[aria-busy="true"] button { opacity: .6; pointer-events: none; }
@media (max-width: 900px) { #billing-panel .billing-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) {
  header:has(#billing-toggle:not([hidden])) { height: auto; min-height: 86px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; gap: 14px; }
  header:has(#billing-toggle:not([hidden])) .header-right { width: 100%; justify-content: space-between; gap: 12px; }
}