/* ============================================================
   CHECKOUT PAGE
   ============================================================ */
.checkout-page {
  min-height: 100vh;
  padding-top: var(--navbar-height);
  padding-bottom: 80px;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.checkout-page__bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.1) 0%, transparent 70%);
  top: -100px;
  left: -100px;
  pointer-events: none;
  z-index: 0;
}

.checkout-page__container {
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 24px 0;
  position: relative;
  z-index: 1;
}

.checkout-page__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.checkout-page__back:hover {
  color: var(--accent-secondary);
}

.checkout-page__title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.checkout-page__subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

/* Grid layout */
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 32px;
  align-items: start;
}

/* ---- Order Form ---- */
.checkout-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.checkout-form__section-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.checkout-form__section-title::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.checkout-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.form-group label span {
  color: var(--accent-primary);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent-primary);
  background: rgba(108, 99, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group input.error {
  border-color: #ff4d4d;
}

.form-group .error-msg {
  font-size: 0.78rem;
  color: #ff4d4d;
  display: none;
}

.form-group input.error ~ .error-msg {
  display: block;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23606078' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.checkout-form__divider {
  height: 1px;
  background: var(--border-color);
  margin: 28px 0;
}

/* PayPal button placeholder */
.paypal-placeholder {
  margin-top: 24px;
  background: rgba(0, 112, 186, 0.08);
  border: 2px dashed rgba(0, 112, 186, 0.25);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.paypal-placeholder__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* ===== REPLACE THIS ENTIRE .paypal-placeholder BLOCK WITH YOUR PAYPAL BUTTON =====
   Instructions:
   1. Log in to PayPal Developer (https://developer.paypal.com)
   2. Create a hosted button or use the JS SDK
   3. Replace the placeholder div below with your PayPal button code
   =================================================================================== */
.paypal-btn-area {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.paypal-placeholder__note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Payment method logos */
.paypal-placeholder__methods {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.pay-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 5px 12px;
  height: 34px;
  min-width: 52px;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.pay-logo:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.pay-logo svg {
  height: 20px;
  width: auto;
  display: block;
}

.pay-logo--mc {
  padding: 3px 8px;
  background: #1a1a2e;
}

.pay-logo--amex {
  background: #2557d6;
  padding: 5px 8px;
}

.pay-logo--discover {
  background: #fff;
}

/* ============================================================
   UPSELL CARD — AI Business Cheatsheet add-on
   ============================================================ */
.upsell-card {
  border-radius: var(--radius-lg);
  border: 2px solid rgba(108, 99, 255, 0.35);
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.07) 0%, rgba(0, 212, 255, 0.05) 100%);
  overflow: hidden;
  margin-bottom: 0;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.upsell-card:has(#upsell-toggle:checked) {
  border-color: var(--accent-primary);
  box-shadow: 0 0 32px rgba(108, 99, 255, 0.2);
}

.upsell-card__badge {
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 8px 16px;
  text-transform: uppercase;
}

.upsell-card__body {
  display: flex;
  gap: 20px;
  padding: 24px;
  align-items: flex-start;
}

.upsell-card__book {
  flex-shrink: 0;
  width: 110px;
}

.upsell-card__book img {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 8px 24px rgba(108, 99, 255, 0.3));
  transition: transform var(--transition-normal);
}

.upsell-card:hover .upsell-card__book img {
  transform: translateY(-4px) rotate(-2deg);
}

.upsell-card__info {
  flex: 1;
}

.upsell-card__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-family: var(--font-heading);
}

.upsell-card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
}

.upsell-card__desc strong {
  color: var(--accent-secondary);
}

.upsell-card__pricing {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 18px;
}

.upsell-card__original {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(255, 80, 80, 0.7);
}

.upsell-card__price {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.upsell-card__label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Toggle switch */
.upsell-card__toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.upsell-card__toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.upsell-card__toggle-track {
  width: 48px;
  height: 26px;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
  position: relative;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.upsell-card__toggle input:checked ~ .upsell-card__toggle-track {
  background: var(--accent-gradient);
  border-color: transparent;
}

.upsell-card__toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  transition: transform var(--transition-normal);
}

.upsell-card__toggle input:checked ~ .upsell-card__toggle-track .upsell-card__toggle-thumb {
  transform: translateX(22px);
}

.upsell-card__toggle-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.upsell-card__toggle-text strong {
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
}

.upsell-card__toggle-text small {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 480px) {
  .upsell-card__body {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .upsell-card__book {
    width: 130px;
  }
  .upsell-card__toggle {
    justify-content: center;
  }
  .upsell-card__pricing {
    justify-content: center;
  }
}

/* ---- Order Summary ---- */
.checkout-summary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: sticky;
  top: calc(var(--navbar-height) + 24px);
}

.checkout-summary__header {
  padding: 28px 28px 0;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.checkout-summary__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.checkout-summary__plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.checkout-summary__plan-desc {
  font-size: 0.87rem;
  color: var(--text-secondary);
}

.checkout-summary__body {
  padding: 24px 28px;
}

.checkout-summary__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.checkout-summary__feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.87rem;
  color: var(--text-secondary);
}

.checkout-summary__feature-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-secondary);
  flex-shrink: 0;
}

.checkout-summary__divider {
  height: 1px;
  background: var(--border-color);
  margin-bottom: 20px;
}

.checkout-summary__price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.87rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.checkout-summary__savings-row {
  background: rgba(34, 197, 94, 0.07);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  margin: 4px 0;
  border: 1px solid rgba(34, 197, 94, 0.15);
  font-weight: 600;
  font-size: 0.88rem !important;
}

.checkout-summary__savings-row span:first-child {
  color: #22c55e;
}

.checkout-summary__total-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  margin-top: 12px;
}

.checkout-summary__total-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.checkout-summary__total-price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.checkout-summary__guarantee {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 20px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.checkout-summary__guarantee-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* Secure badges */
.checkout-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 28px;
  border-top: 1px solid var(--border-color);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .checkout-grid {
    grid-template-columns: 1fr;
  }
  .checkout-summary {
    position: static;
    order: -1;
  }
  .checkout-form__row {
    grid-template-columns: 1fr;
  }
}