/* Keep the heading and actions visible; only the contents scroll. */
dialog {
  max-height: calc(100dvh - 32px);
  overflow: hidden;
}
#modal-content {
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - 34px);
  min-height: 0;
}
.dialog-head { flex: none; gap: 16px; align-items: center; }
.dialog-head > div { min-width: 0; }
.dialog-head h2 { overflow-wrap: anywhere; }
.dialog-head .close { flex: none; width: 44px; min-height: 44px; }
.dialog-body { min-height: 0; overflow: auto; overscroll-behavior: contain; }
body:has(dialog[open]) { overflow: hidden; }

.payment-dialog { width: min(540px, calc(100vw - 32px)); }
.payment-dialog.has-qr { width: min(780px, calc(100vw - 32px)); }
.payment-dialog .dialog-head { padding: 20px 24px; }
.payment-dialog .dialog-head h2 { font-size: 20px; }
.payment-dialog .dialog-head p { font-size: 12px; }
.payment-dialog .dialog-body {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}
.payment-content {
  padding: 24px;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}
.payment-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }
.has-qr .payment-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 300px); }
.payment-summary, .payment-checkout { min-width: 0; }
.payment-total { padding: 4px 0 24px; border-bottom: 1px solid var(--border); }
.payment-total .detail-amount { margin: 0 0 12px; font-size: 34px; line-height: 1.2; }
.payment-details { margin: 24px 0 0; display: grid; gap: 18px; font-size: 13px; }
.payment-details > div { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 14px; align-items: start; }
.payment-details dt { color: var(--muted); }
.payment-details dd { margin: 0; text-align: right; overflow-wrap: anywhere; }
.payment-id { font: 11px/1.65 ui-monospace, Consolas, monospace; }
.payment-checkout { padding: 16px; border-radius: 12px; background: var(--bg); border: 1px solid var(--border); }
.payment-checkout .qr-area { margin: 0; padding: 16px 12px; background: var(--surface); }
.payment-checkout .qr-area img, .payment-checkout .qr-area canvas { width: 208px; max-width: 100%; height: auto; }
.payment-checkout .qr-area small { font-size: 11px; line-height: 1.5; max-width: 208px; margin: 12px auto 0; }
.payment-checkout > .btn { margin-top: 14px; }
.payment-checkout .copy-row { gap: 8px; margin-top: 10px; }
.payment-checkout .copy-row input { min-width: 0; flex: 1; padding: 8px; font-size: 11px; text-overflow: ellipsis; }
.payment-checkout .copy-row button { flex: none; padding: 8px 10px; font-size: 11px; }
.payment-content > .error-box { margin-bottom: 0; }
.payment-content .callout { margin: 16px 0 0; padding: 0; }
.payment-actions {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  background: var(--surface);
}
.payment-status-hint { font-size: 11px; color: var(--muted); max-width: 190px; }
.payment-actions .form-actions { padding: 0; flex-wrap: wrap; }
.payment-actions button { font-size: 12px; }
@media (max-width: 680px) {
  .payment-dialog .dialog-head { padding: 16px 18px; }
  .payment-dialog .dialog-head h2 { font-size: 19px; }
  .payment-content { padding: 20px 18px; }
  .has-qr .payment-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .payment-total { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 0 0 18px; flex-wrap: wrap; }
  .payment-total .detail-amount { font-size: 30px; margin: 0; }
  .payment-details { margin-top: 18px; gap: 12px; font-size: 12px; }
  .payment-details > div { grid-template-columns: 98px minmax(0, 1fr); gap: 12px; }
  .payment-checkout { padding: 14px; }
  .payment-actions { padding: 14px 18px; }
  .payment-status-hint { display: none; }
  .payment-actions .form-actions { width: 100%; }
  .payment-actions button { flex: 1; }
}