/* ==========================================================================
   PAGE: 4-STEP INTERACTIVE CHECKOUT STYLES
   ========================================================================== */

.checkout-section {
  padding: clamp(32px, 5vw, 64px) 0 var(--space-4xl);
  background-color: var(--color-cream);
  min-height: calc(100vh - 350px);
}

.checkout-header {
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.checkout-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-md);
}

/* Step Indicator Bar */
.checkout-steps-tracker {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(12px, 3vw, 36px);
  margin: 0 auto var(--space-2xl);
  max-width: 680px;
  position: relative;
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  cursor: default;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-sand);
  color: var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  transition: all var(--transition-fast);
}

.step-indicator.active {
  color: var(--color-dark);
}

.step-indicator.active .step-num {
  background-color: var(--color-sage-800);
  color: var(--color-white);
}

.step-indicator.completed {
  color: var(--color-sage-600);
}

.step-indicator.completed .step-num {
  background-color: var(--color-sage-500);
  color: var(--color-white);
}

.step-divider {
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
  max-width: 48px;
}

/* Layout Grid: Step Panels + Sticky Order Summary */
.checkout-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.checkout-panel-card {
  background-color: var(--color-cream-card);
  border: 1px solid var(--color-border-light);
  padding: clamp(24px, 4vw, 40px);
}

/* Step Panels */
.checkout-step-panel {
  display: none;
}

.checkout-step-panel.active {
  display: block;
  animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-heading {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
}

/* Step 1: Bag Review Items */
.checkout-bag-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: var(--space-xl);
}

.checkout-bag-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 16px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.checkout-bag-img {
  width: 72px;
  height: 90px;
  object-fit: cover;
  background-color: var(--color-sand);
}

.checkout-bag-meta {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.checkout-empty-state {
  text-align: center;
  padding: 48px 20px;
}

/* Step 2: Shipping Form */
.checkout-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 16px;
}

/* Step 3: Payment Options */
.payment-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: var(--space-lg);
}

.payment-tab-btn {
  padding: 12px 8px;
  text-align: center;
  border: 1.5px solid var(--color-border);
  background-color: var(--color-cream);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.payment-tab-btn:hover {
  border-color: var(--color-dark);
}

.payment-tab-btn.active {
  border-color: var(--color-sage-800);
  background-color: var(--color-sage-50);
  color: var(--color-sage-900);
}

.card-inputs-box {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Step Navigation Buttons */
.step-actions-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
  gap: 12px;
}

/* Step 4: Order Confirmation */
.confirmation-box {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
}

.confirm-badge-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--color-sage-500);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.order-id-highlight {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--color-sage-100);
  color: var(--color-sage-900);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin: 6px 0;
}

/* Sticky Order Summary Sidebar */
.order-summary-card {
  background-color: var(--color-cream-card);
  border: 1px solid var(--color-border-light);
  padding: clamp(20px, 3vw, 32px);
  position: sticky;
  top: 96px;
}

.summary-items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 240px;
  overflow-y: auto;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.summary-mini-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

.summary-rows-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.summary-calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.summary-total-row {
  font-size: 1.15rem;
  font-weight: 800;
  padding-top: 14px;
  border-top: 1.5px dashed var(--color-border);
  margin-top: 6px;
}

.security-perk-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 0.75rem;
  color: var(--color-sage-700);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (CHECKOUT)
   ========================================================================== */

@media (max-width: 1024px) {
  .checkout-grid {
    grid-template-columns: 1fr;
  }

  .order-summary-card {
    position: static;
  }
}

@media (max-width: 640px) {
  .checkout-steps-tracker {
    gap: 8px;
  }

  .step-indicator span:not(.step-num) {
    display: none;
  }

  .form-grid-2,
  .form-grid-3 {
    grid-template-columns: 1fr;
  }

  .payment-tabs {
    grid-template-columns: 1fr;
  }
}