.billing-card {
  border: 1px solid #dfe3e8;
  border-radius: 18px;
  padding: 24px;
  background: #fff;
}

.billing-card + .billing-card { margin-top: 18px; }

.billing-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid #e5e7eb;
}

.billing-card-head h3 {
  margin: 4px 0 0;
  font-family: "Fraunces", serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.billing-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 18px 0;
}

.billing-detail-grid > div {
  min-width: 0;
  padding: 14px;
  border-radius: 12px;
  background: #f5f7f9;
}

.billing-detail-grid span,
.billing-detail-grid strong { display: block; }
.billing-detail-grid span { color: #68758a; font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.billing-detail-grid strong { margin-top: 5px; overflow-wrap: anywhere; }

.billing-invoices { margin-top: 22px; }
.billing-invoices h4 { margin: 0 0 10px; }
.billing-invoice {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  color: inherit;
  border-top: 1px solid #e5e7eb;
  text-decoration: none;
}

.billing-admin-tools {
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid #e5e7eb;
}

.billing-admin-tools details {
  border: 1px solid #dfe3e8;
  border-radius: 14px;
  background: #f8fafb;
}

.billing-admin-tools summary {
  cursor: pointer;
  padding: 16px 18px;
  list-style: none;
}

.billing-admin-tools summary::-webkit-details-marker { display: none; }
.billing-admin-tools summary strong,
.billing-admin-tools summary small { display: block; }
.billing-admin-tools summary small { margin-top: 4px; color: #68758a; }

.billing-operation-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 0 18px 18px;
}

.billing-operation-form label {
  display: grid;
  gap: 7px;
  color: #59677d;
  font-size: .82rem;
  font-weight: 700;
}

.billing-operation-form input,
.billing-operation-form select,
.billing-operation-form textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #d5dbe3;
  border-radius: 10px;
  padding: 12px;
  color: #111827;
  background: #fff;
  font: inherit;
}

.billing-form-wide { grid-column: 1 / -1; }
.billing-operation-form .billing-check { display: flex; flex-direction: row; align-items: flex-start; }
.billing-operation-form .billing-check input { width: auto; margin-top: 3px; }
.billing-last-message { margin: 0 18px 18px; color: #68758a; font-size: .85rem; }
.portal-button-danger { background: #8b2018; border-color: #8b2018; color: #fff; justify-self: start; }
.portal-button-small { padding: 8px 12px; font-size: .78rem; }

.billing-charges { margin-top: 22px; }
.billing-charges h4 { margin: 0 0 10px; }
.billing-charge {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid #e5e7eb;
}
.billing-charge span { display: block; margin-top: 3px; color: #68758a; font-size: .82rem; }

.billing-review-dialog {
  width: min(680px, calc(100% - 32px));
  max-height: calc(100vh - 40px);
  box-sizing: border-box;
  border: 0;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 24px 80px rgba(3, 10, 20, .28);
}
.billing-review-dialog::backdrop { background: rgba(6, 13, 22, .7); }
.billing-review-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.billing-review-head h2 { margin: 0; font-family: "Fraunces", serif; }
.billing-review-head button { border: 0; border-radius: 999px; width: 38px; height: 38px; font-size: 1.5rem; cursor: pointer; }
.billing-review-list { display: grid; gap: 0; margin: 22px 0; }
.billing-review-list > div { display: flex; justify-content: space-between; gap: 20px; padding: 11px 0; border-bottom: 1px solid #e5e7eb; }
.billing-review-list dt { color: #68758a; }
.billing-review-list dd { margin: 0; font-weight: 700; text-align: right; }
.billing-email-preview { width: 100%; min-height: 430px; border: 1px solid #dfe3e8; border-radius: 12px; background: #fff; }

@media (max-width: 700px) {
  .billing-detail-grid { grid-template-columns: 1fr; }
  .billing-card { padding: 18px; }
  .billing-card-head { display: block; }
  .billing-card-head .portal-badge { display: inline-block; margin-top: 10px; }
  .billing-operation-form { grid-template-columns: 1fr; }
  .billing-form-wide { grid-column: auto; }
  .billing-charge { grid-template-columns: minmax(0, 1fr) auto; }
  .billing-charge .portal-button { grid-column: 1 / -1; }
}