/* Billing tab — sub-tabs, rail, plan summary, receipts */
.billing-subtabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.billing-subtab {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
}

.billing-subtab.active {
  background: var(--accent-dim, rgba(79, 109, 245, 0.14));
  color: var(--accent, #4f6df5);
  border-color: rgba(79, 109, 245, 0.35);
}

.billing-panel[hidden] {
  display: none !important;
}

.billing-rail {
  position: sticky;
  top: 1rem;
  width: 11rem;
  padding: 0.85rem 0.9rem;
  border-radius: var(--radius-sm, 10px);
  border: 1px solid var(--border);
  background: var(--glass-bg, rgba(22, 22, 24, 0.85));
  backdrop-filter: blur(12px);
}

.billing-rail-title {
  margin: 0 0 0.65rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.billing-rail-list {
  list-style: none;
  margin: 0 0 0.85rem;
  padding: 0;
  font-size: 0.78rem;
}

.billing-rail-list li {
  margin-bottom: 0.55rem;
}

.billing-rail-label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.billing-rail-value {
  font-weight: 500;
  word-break: break-word;
}

.billing-rail-actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.billing-rail-actions .btn {
  width: 100%;
  justify-content: center;
}

.billing-rail-support {
  margin-top: 0.75rem;
  font-size: 0.75rem;
}

.billing-rail-support a {
  color: var(--text-muted);
}

.billing-trial-banner {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(79, 109, 245, 0.35);
  background: rgba(79, 109, 245, 0.1);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.billing-trial-banner p {
  margin: 0;
  font-size: 0.84rem;
}

.billing-alert-banner {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 176, 32, 0.35);
  background: rgba(255, 176, 32, 0.12);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.billing-alert-banner p {
  margin: 0;
  font-size: 0.84rem;
}

.billing-plan-summary {
  margin-bottom: 1rem;
}

.billing-payment-card {
  margin-top: 1rem;
}

.billing-payment-card .insights-note {
  margin-top: 0.35rem;
  font-size: 0.72rem;
}

.billing-usage-alert {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.billing-usage-alert label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.84rem;
  cursor: pointer;
}

.billing-usage-alert input {
  margin-top: 0.15rem;
}

.billing-invoice-empty {
  text-align: center;
  padding: 2rem 1rem;
}

.billing-invoice-empty .btn {
  margin-top: 0.75rem;
}

.billing-compare-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.82rem;
}

.acct-plan--preselect {
  animation: billing-preselect-pulse 1.2s ease-in-out 2;
}

@keyframes billing-preselect-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 1px var(--accent, #4f6df5);
  }
  50% {
    box-shadow: 0 0 0 3px rgba(79, 109, 245, 0.45);
  }
}

@media (max-width: 960px) {
  .billing-rail {
    position: static;
    width: 100%;
    order: -1;
    margin-bottom: 1rem;
  }
}