.billing-top {
  display: flex;
  align-items: baseline;
  gap: 18px;
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 8px;
}

.billing-top h1 { margin: 0; font-size: var(--fs-h2, 24px); font-weight: 600; }

.billing-back {
  color: var(--muted);
  font-size: var(--fs-ui, 14px);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.billing-back:hover { color: var(--ink); text-decoration: none; }

.billing-main {
  display: grid;
  gap: 18px;
  max-width: 760px;
  margin: 0 auto;
  padding: 16px 20px 48px;
}

.billing-card {
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--r-md, 12px);
  background: var(--surface);
}

.billing-card h2 { margin: 0 0 14px; font-size: var(--fs-h2); font-weight: 600; }
.billing-card h3 { margin: 14px 0 10px; font-size: var(--fs-ui, 14px); font-weight: 600; }
.billing-hint { margin: 0; color: var(--muted); font-size: var(--fs-ui, 14px); }

.balance-tokens { margin: 0; }
.balance-tokens strong { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; }
.balance-tokens span { margin-left: 8px; color: var(--muted); font-size: var(--fs-ui, 14px); }
.balance-grid { display: flex; flex-wrap: wrap; gap: 8px 40px; }
.balance-tokens .balance-label { display: block; margin: 0 0 2px; }
.balance-tokens .balance-unit { margin-left: 6px; }

.entitlement-list { margin: 12px 0 0; padding: 0; list-style: none; }
.entitlement-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: var(--fs-caption, 13px);
}
.entitlement-list li strong { color: var(--ink); font-weight: 600; }

.sku-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.sku-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm, 8px);
  background: var(--surface-subtle, transparent);
  cursor: pointer;
  text-align: left;
  font: inherit;
}
.sku-card:hover { border-color: var(--accent); }
.sku-card.is-selected { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.sku-card .sku-name { font-size: var(--fs-ui, 14px); font-weight: 600; }
.sku-card .sku-tokens { font-size: 20px; font-weight: 700; }
.sku-card .sku-period { color: var(--muted); font-size: var(--fs-caption, 13px); }
.sku-card .sku-description { color: var(--muted); font-size: var(--fs-caption, 13px); }
.sku-card .sku-features { margin: 0; padding-left: 18px; color: var(--muted); font-size: var(--fs-caption, 13px); }
.sku-card .sku-price { margin-top: auto; color: var(--accent-strong); font-size: var(--fs-ui, 14px); font-weight: 700; }

.provider-row { display: flex; flex-wrap: wrap; gap: 10px; }

.provider-button {
  min-height: 40px;
  padding: 8px 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill, 999px);
  color: var(--ink);
  background: var(--surface);
  font: inherit;
  font-size: var(--fs-ui, 14px);
  font-weight: 600;
  cursor: pointer;
}
.provider-button:hover:not(:disabled) { border-color: var(--accent); }
.provider-button.is-selected { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-strong); }
.provider-button:disabled { opacity: .6; cursor: wait; }

.checkout-detail { margin-top: 14px; }

.checkout-detail .qr-box {
  display: inline-block;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm, 8px);
  background: #fff;
}
.checkout-detail .qr-box canvas { display: block; }
.checkout-detail .checkout-order-id { margin-top: 8px; color: var(--muted); font-size: var(--fs-caption, 13px); font-family: ui-monospace, monospace; }
.checkout-detail .checkout-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 22px;
  border-radius: var(--r-pill, 999px);
  color: var(--on-accent);
  background: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.checkout-detail .checkout-link:hover { background: var(--accent-strong); text-decoration: none; }
.checkout-detail .checkout-instructions {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--marker, var(--border));
  border-radius: var(--r-sm, 8px);
  background: var(--marker-soft, transparent);
  font-size: var(--fs-ui, 14px);
  line-height: 1.6;
  white-space: pre-wrap;
}

.checkout-status { margin: 10px 0 0; font-size: var(--fs-ui, 14px); color: var(--muted); }
.checkout-status.is-paid { color: var(--success, #188038); font-weight: 600; }
.checkout-status.is-error { color: var(--danger, #d93025); }

.redeem-row { display: flex; gap: 10px; }
.redeem-row input {
  flex: 1;
  height: 42px;
  padding: 0 12px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm, 8px);
  font: inherit;
  outline: 0;
}
.redeem-row input:focus { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.redeem-row button {
  min-height: 42px;
  padding: 0 22px;
  border: 0;
  border-radius: var(--r-pill, 999px);
  color: var(--on-accent);
  background: var(--accent);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.redeem-row button:hover:not(:disabled) { background: var(--accent-strong); }
.redeem-row button:disabled { opacity: .6; cursor: wait; }

.redeem-message { margin: 10px 0 0; font-size: var(--fs-ui, 14px); }
.redeem-message.is-ok { color: var(--success, #188038); }
.redeem-message.is-error { color: var(--danger, #d93025); }

.orders-table { width: 100%; border-collapse: collapse; font-size: var(--fs-caption, 13px); }
.orders-table th, .orders-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.orders-table th { color: var(--muted); font-weight: 600; }
.orders-table .order-id { font-family: ui-monospace, monospace; font-size: 12px; }
.order-status { display: inline-block; padding: 2px 10px; border-radius: var(--r-pill, 999px); font-size: 12px; font-weight: 600; }
.order-status--paid { color: var(--success, #188038); background: color-mix(in srgb, var(--success, #188038) 12%, transparent); }
.order-status--created { color: var(--muted); background: var(--faint-bub, transparent); }
.order-status--expired, .order-status--cancelled, .order-status--refunded { color: var(--danger, #d93025); background: color-mix(in srgb, var(--danger, #d93025) 10%, transparent); }

@media (max-width: 560px) {
  .billing-top { padding: 20px 14px 6px; }
  .billing-main { padding: 12px 14px 40px; }
  .billing-card { padding: 18px; }
  .orders-table th:nth-child(5), .orders-table td:nth-child(5) { display: none; }
}

.tier-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  border-radius: var(--r-pill, 999px);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-strong, #1a56db);
  background: color-mix(in srgb, var(--accent, #1a56db) 12%, transparent);
  vertical-align: middle;
}