.checkout-page {
  background: linear-gradient(180deg, var(--pink-soft), var(--white) 360px);
}
.checkout-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 28px;
  align-items: start;
}
.checkout-card, .order-summary {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
}
.order-summary {
  position: sticky;
  top: 96px;
}
.progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 22px;
}
.progress span {
  min-height: 8px;
  border-radius: 999px;
  background: var(--border);
}
.progress span.is-active { background: var(--pink); }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.field.full { grid-column: 1 / -1; }
.field-error { min-height: 18px; margin: 5px 0 0; color: #B5234B; font-size: .88rem; font-weight: 800; }
.checkbox-row { display: flex; gap: 10px; align-items: flex-start; margin: 14px 0; }
.checkbox-row input { width: 18px; min-height: 18px; margin-top: 3px; }
.payment-info {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--blue);
}
.pix-box {
  display: grid;
  gap: 14px;
  margin-top: 16px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
}
.pix-box h3 {
  margin: 0;
}
.pix-qr {
  width: min(260px, 100%);
  aspect-ratio: 1;
  object-fit: contain;
  justify-self: center;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
}
.pix-box textarea {
  width: 100%;
  min-height: 92px;
  resize: vertical;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--pink-soft);
  font: 600 .9rem/1.45 "Nunito Sans", Arial, sans-serif;
}
.pix-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.summary-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.summary-item .book-cover { min-height: 72px; padding: 8px; }
.summary-item .book-cover.image-cover { padding: 0; }
.summary-item .book-cover strong, .summary-item .book-cover small, .summary-item .cover-butterfly { display: none; }
.summary-line { display: flex; justify-content: space-between; margin: 10px 0; }
.secure-seal { margin-top: 18px; padding: 14px; border-radius: var(--radius); background: var(--green); font-weight: 900; }
.loading { opacity: .72; pointer-events: none; }
.thanks-card {
  max-width: 760px;
  margin: 0 auto;
  padding: 34px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}
.success-icon {
  display: inline-grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin-bottom: 16px;
  border-radius: 999px;
  color: var(--white);
  background: #29A76A;
  font-size: 2rem;
}
@media (max-width: 880px) {
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }
}
@media (max-width: 560px) {
  .form-grid { grid-template-columns: 1fr; }
}