.checkout-page-main { background: var(--paper-soft); }
.checkout-page-section { padding: 56px 0 88px; }
.checkout-page-header { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.checkout-page-header h1 { font-size: 2.1rem; }
.checkout-subtitle { color: var(--ink-soft); }

.checkout-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 32px; align-items: start; }
.checkout-main { display: flex; flex-direction: column; gap: 24px; }
.checkout-section { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.checkout-section h3 { font-size: 1.1rem; margin-bottom: 20px; }

.form-row-group { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; font-family: var(--font-heading); }
.form-group .required { color: #dc2626; }
.form-control {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--font-body); font-size: 0.95rem; color: var(--ink); background: #fff;
}
.form-control:focus { outline: none; border-color: var(--accent1); box-shadow: 0 0 0 3px rgba(252,163,17,0.18); }

.stripe-card-wrapper { border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-bottom: 20px; }
#payment-element { min-height: 22px; }
.payment-error-alert { color: #dc2626; font-size: 0.85rem; margin-top: 10px; }

.btn-pay { position: relative; }
.btn-spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.7s linear infinite; display: inline-block; vertical-align: middle;
}
[hidden] { display: none !important; }
@keyframes spin { to { transform: rotate(360deg); } }

.seats-row { display: flex; align-items: center; gap: 12px; }
.seats-row .form-control { max-width: 100px; }

.checkout-sidebar { position: sticky; top: 90px; }
.order-summary-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.order-summary-header h3 { font-size: 1.05rem; margin-bottom: 18px; }
.summary-line-item { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.summary-course-info { display: flex; flex-direction: column; gap: 4px; }
.summary-course-name { font-weight: 700; font-size: 0.92rem; color: var(--ink); }
.summary-qty { font-size: 0.8rem; color: var(--ink-soft); }
.summary-amount { font-weight: 700; color: var(--ink); }
.summary-divider { border: none; border-top: 1px solid var(--line); margin: 16px 0; }
.summary-row { display: flex; justify-content: space-between; font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 10px; }
.summary-total { font-weight: 800; color: var(--ink); font-size: 1.05rem; }

.account-notice-callout {
  display: flex; gap: 10px; align-items: flex-start; background: var(--paper-soft);
  border-radius: 8px; padding: 14px; margin-top: 20px; font-size: 0.82rem; color: var(--ink-soft);
}
.account-notice-callout svg { color: var(--accent1-dark); flex-shrink: 0; }
.success-callout { background: rgba(26,143,76,0.08); }

.success-view-card { background: #fff; border-radius: var(--radius); padding: 48px; text-align: center; max-width: 560px; margin: 0 auto; box-shadow: var(--shadow-md); }
.success-icon-wrapper { width: 72px; height: 72px; border-radius: 50%; background: rgba(26,143,76,0.1); color: var(--success); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.success-lead { color: var(--ink-soft); }
.success-details-card { background: var(--paper-soft); border-radius: 8px; padding: 18px; margin: 20px 0; text-align: left; }
.success-detail-row { display: flex; justify-content: space-between; font-size: 0.9rem; padding: 6px 0; }

@media (max-width: 860px) {
  .checkout-grid { grid-template-columns: 1fr; }
  .form-row-group { grid-template-columns: 1fr; }
  .checkout-sidebar { position: static; }
}