/* Stripe Checkout — Two-Column Layout */
.checkout-section {
  padding: 80px 0;
  background: #fff;
  scroll-margin-top: 30px;
}

.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* Left: Order Summary Panel */
.checkout-summary {
  background: var(--color-bg-dark);
  color: var(--color-text-white);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.checkout-summary-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 12px;
}

.checkout-summary-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  line-height: 1.2;
}

.checkout-summary-price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 36px;
}

.checkout-summary-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-cta);
}

.checkout-summary-original {
  font-size: calc(1.1rem + 3px);
  font-weight: 500;
  color: rgba(255,255,255,0.45);
  text-decoration: line-through;
}

.checkout-summary-discount {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-cta);
  background: rgba(57, 126, 99, 0.18);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 28px;
}

.checkout-summary-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.checkout-summary-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  line-height: 1.5;
  color: #fff;
}

.checkout-summary-features li svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-cta);
}

.checkout-summary-secure {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

.checkout-summary-secure svg {
  flex-shrink: 0;
  color: rgba(255,255,255,0.4);
}

/* Right: Form Panel */
.checkout-form-panel {
  background: #fff;
  padding: 40px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.checkout-form-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.checkout-form-sub {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  margin-bottom: 28px;
  line-height: 1.55;
  padding: 12px 14px;
  background: var(--color-bg-light);
  border-left: 3px solid var(--color-cta);
  border-radius: 0 6px 6px 0;
}

.checkout-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-medium);
  margin-bottom: 14px;
}

.checkout-field-group {
  margin-bottom: 18px;
}

.checkout-field-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-dark);
  margin-bottom: 5px;
}

.checkout-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 18px;
}

.checkout-field-row .checkout-field-group {
  margin-bottom: 0;
}

.checkout-input {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--color-border);
  border-radius: 6px;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  color: var(--color-text-dark);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
  -webkit-appearance: none;
}

.checkout-input::placeholder {
  color: #b0bec5;
}

.checkout-input:focus {
  border-color: #635bff;
  box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.12);
}

.checkout-card-field {
  position: relative;
}

.checkout-card-field .checkout-input {
  padding-right: 80px;
}

.checkout-card-icons {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 5px;
  pointer-events: none;
}

.checkout-card-icons svg {
  display: block;
  opacity: 0.7;
}

.checkout-divider {
  height: 1px;
  background: var(--color-border);
  margin: 22px 0;
}

.checkout-submit-btn {
  width: 100%;
  padding: 13px;
  background: #635bff;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 6px;
}

.checkout-submit-btn:hover {
  background: #5a52e8;
  box-shadow: 0 2px 8px rgba(99, 91, 255, 0.3);
}

.checkout-form-secure {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--color-text-light);
}

.checkout-form-secure svg {
  flex-shrink: 0;
  color: #635bff;
}

.checkout-refund-note {
  text-align: center;
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--color-text-medium);
  line-height: 1.4;
}

.checkout-onetime {
  text-align: center;
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

.checkout-refund-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.82rem;
  font-weight: 500;
  color: #166534;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 6px;
  padding: 8px 12px;
  margin-bottom: 18px;
}

.checkout-refund-badge svg {
  flex-shrink: 0;
  color: #16a34a;
}

.checkout-card-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 5px;
}

.checkout-card-label-row label {
  margin-bottom: 0;
}

.checkout-card-brands {
  display: flex;
  align-items: center;
  gap: 4px;
}

.checkout-card-brands svg {
  border-radius: 3px;
  display: block;
}

.checkout-card-unified {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--color-border);
  border-radius: 6px;
  background: #fff;
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.checkout-card-unified:focus-within {
  border-color: #635bff;
  box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.12);
}

.checkout-card-unified.has-error {
  border-color: #c0392b;
}

.card-field-divider {
  width: 1px;
  background: var(--color-border);
  flex-shrink: 0;
  align-self: stretch;
}

#card-number-element {
  flex: 1;
  padding: 11px 13px;
}

#card-expiry-element,
#card-cvc-element {
  flex: 0 0 110px;
  padding: 11px 13px;
}

.checkout-step-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-medium);
  margin-bottom: 6px;
}

.checkout-step-heading {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 22px;
}

.checkout-email-confirmed {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #f0fdf4;
  border: 1.5px solid #bbf7d0;
  border-radius: 6px;
  margin-bottom: 22px;
}

.checkout-email-confirmed-text {
  flex: 1;
  font-size: 0.875rem;
  color: var(--color-text-dark);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.checkout-email-change {
  font-size: 0.8rem;
  color: #635bff;
  cursor: pointer;
  font-weight: 500;
  background: none;
  border: none;
  padding: 0;
  flex-shrink: 0;
  text-decoration: underline;
}

.checkout-secure-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--color-text-light);
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-reveal {
  animation: fadeInDown 0.2s ease forwards;
}

@media (max-width: 768px) {
  .checkout-section {
    padding: 40px 0;
  }
  .checkout-layout {
    grid-template-columns: 1fr;
    border-radius: var(--radius-sm);
  }
  .checkout-summary {
    padding: 24px 24px 20px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    order: 1;
  }
  .checkout-summary-title {
    font-size: 1.35rem;
    margin-bottom: 2px;
  }
  .checkout-summary-price-row {
    margin-bottom: 20px;
  }
  .checkout-summary-features {
    gap: 12px;
  }
  .checkout-summary-features li {
    font-size: 0.875rem;
  }
  .checkout-form-panel {
    padding: 28px 24px 36px;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    order: 2;
  }
  .checkout-field-row {
    grid-template-columns: 1fr;
  }
  .checkout-card-brands svg {
    width: 30px;
    height: 20px;
  }
}