/* Reset & base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #ca8a04;
  --color-warning-light: #fef9c3;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --transition: 150ms ease;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--color-gray-800);
  background: var(--color-gray-50);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px;
}

/* Seller logo */
.seller-logo {
  text-align: center;
  padding: 20px 0 0;
}
.seller-logo img {
  max-height: 56px;
  max-width: 200px;
  object-fit: contain;
}

.logo-divider {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: 16px 0 0;
}

.page-header {
  text-align: center;
  padding: 24px 0 16px;
}

/* Landing */
.landing-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.landing-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-gray-400);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.landing-divider::before,
.landing-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-gray-200);
}

/* Section back link */
.section-back {
  margin-bottom: 12px;
}
.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  font-size: 0.875rem;
  text-decoration: none;
  padding: 4px 0;
}
.btn-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Section title */
.section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-gray-800);
}

/* Request cards */
.request-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.request-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}
.request-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}
.request-card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

.page-header .logo {
  max-height: 48px;
  margin-bottom: 12px;
}

.page-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-gray-900);
}

.page-header p {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-top: 4px;
}

/* Card */
.card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 16px;
}

/* Stepper */
.stepper {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  padding: 24px 0;
  margin-bottom: 8px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  min-width: 72px;
}

.step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  border: 2px solid var(--color-gray-300);
  background: #fff;
  color: var(--color-gray-400);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.step-item.active .step-circle {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.step-item.completed .step-circle {
  border-color: var(--color-success);
  background: var(--color-success);
  color: #fff;
}

.step-label {
  font-size: 0.72rem;
  color: var(--color-gray-500);
  text-align: center;
  white-space: nowrap;
  transition: all var(--transition);
}

.step-item.active .step-label {
  color: var(--color-primary);
  font-weight: 600;
}

.step-item.completed .step-label {
  color: var(--color-success);
  font-weight: 500;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--color-gray-300);
  flex-shrink: 0;
  margin-top: 18px;
  transition: background var(--transition);
}

.step-item.completed + .step-line {
  background: var(--color-success);
}

/* Form elements */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: 6px;
}

.form-group .hint {
  font-size: 0.75rem;
  color: var(--color-gray-400);
  margin-top: 4px;
}

input[type='text'],
input[type='email'],
input[type='number'],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.9rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  background: #fff;
  color: var(--color-gray-800);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-outline {
  background: #fff;
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}
.btn-outline:hover:not(:disabled) {
  background: var(--color-gray-50);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-group {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.btn-group .btn {
  flex: 1;
}

/* Order list */
.order-list {
  list-style: none;
}

.order-card {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all var(--transition);
}

.order-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.order-card.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.order-card.ineligible {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--color-gray-50);
}

.order-card.ineligible:hover {
  border-color: var(--color-gray-200);
  background: var(--color-gray-50);
}

.order-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.order-card-header strong {
  font-size: 0.9rem;
}

.order-card-meta {
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success {
  background: var(--color-success-light);
  color: var(--color-success);
}
.badge-danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
}
.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}
.badge-info {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Item selection */
.item-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  margin-bottom: 8px;
  transition:
    border-color var(--transition),
    background var(--transition);
}
.item-row.item-active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.item-row .item-image {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  object-fit: cover;
  background: var(--color-gray-100);
  flex-shrink: 0;
}

.item-row .item-image-placeholder {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.item-row .item-info {
  flex: 1;
  min-width: 0;
}

.item-row .item-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-row .item-sku {
  font-size: 0.75rem;
  color: var(--color-gray-400);
}

.item-row .item-price {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

.item-row .item-qty {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.qty-control {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  overflow: hidden;
}

.qty-control button {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-gray-50);
  color: var(--color-gray-600);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qty-control button:hover {
  background: var(--color-gray-100);
}
.qty-control button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.qty-control .qty-value {
  width: 36px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  border-left: 1px solid var(--color-gray-300);
  border-right: 1px solid var(--color-gray-300);
  padding: 4px 0;
}

/* Exchange variant selection */
.exchange-section {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.exchange-section h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.resolution-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.resolution-option {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.resolution-option:hover {
  border-color: var(--color-primary-light);
}

.resolution-option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.resolution-option input[type='radio'] {
  margin-top: 0;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.resolution-option .option-text {
  flex: 1;
}
.resolution-option .option-text strong {
  font-size: 0.85rem;
  display: block;
}
.resolution-option .option-text p {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 2px;
}

.variant-exchange-area {
  margin: -1px 0 0;
}

.distribution-status {
  padding: 8px 14px;
  font-size: 0.78rem;
  color: var(--color-gray-500);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: none;
}
.distribution-counter {
  font-weight: 600;
  color: var(--color-gray-700);
}
.distribution-counter.complete {
  color: var(--color-success, #22c55e);
}

.variant-list-container {
  max-height: 280px;
  overflow-y: scroll;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
}
.variant-list-container::-webkit-scrollbar {
  width: 8px;
  display: block !important;
  -webkit-appearance: none;
}
.variant-list-container::-webkit-scrollbar-track {
  background: #eee;
}
.variant-list-container::-webkit-scrollbar-thumb {
  background: #bbb;
  border-radius: 4px;
  min-height: 40px;
}
.variant-list-container::-webkit-scrollbar-thumb:hover {
  background: #999;
}
.distribution-status + .variant-list-container {
  border-radius: 0 0 var(--radius) var(--radius);
  border-top: none;
}

.variant-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  cursor: pointer;
  transition: background var(--transition);
  border-bottom: 1px solid var(--color-gray-100);
}
.variant-list-item:last-child {
  border-bottom: none;
}
.variant-list-item:hover {
  background: var(--color-gray-100);
}
.variant-list-item.selected {
  background: var(--color-primary-light);
  box-shadow: inset 3px 0 0 var(--color-primary);
}
.variant-list-item.out-of-stock {
  opacity: 0.45;
  cursor: not-allowed;
}
.variant-list-item.out-of-stock:hover {
  background: transparent;
}

.variant-list-thumb {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--color-gray-200);
}
.variant-list-thumb-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  flex-shrink: 0;
  background: var(--color-gray-200);
}

.variant-list-info {
  flex: 1;
  min-width: 0;
}
.variant-list-name {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-gray-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}
.variant-list-sku {
  font-size: 0.72rem;
  color: var(--color-gray-400);
  margin-top: 2px;
}
.variant-list-meta {
  flex-shrink: 0;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}
.variant-list-stock {
  font-size: 0.72rem;
  color: var(--color-gray-400);
  white-space: nowrap;
}

.vqty-controls {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--color-gray-300);
  border-radius: 6px;
  overflow: hidden;
}
.vqty-controls button {
  width: 28px;
  height: 26px;
  border: none;
  background: var(--color-gray-50);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  padding: 0;
}
.vqty-controls button:hover:not(:disabled) {
  background: var(--color-gray-200);
}
.vqty-controls button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.vqty-value {
  width: 28px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gray-800);
  border-left: 1px solid var(--color-gray-300);
  border-right: 1px solid var(--color-gray-300);
  line-height: 26px;
}
.variant-list-item.has-qty {
  background: var(--color-primary-light);
  box-shadow: inset 3px 0 0 var(--color-primary);
}
.variant-list-item.out-of-stock .vqty-controls {
  display: none;
}

/* Evidence upload */
.evidence-area {
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
}

.evidence-area:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.evidence-area .upload-icon {
  font-size: 2rem;
  color: var(--color-gray-400);
  margin-bottom: 8px;
}

.evidence-area p {
  font-size: 0.85rem;
  color: var(--color-gray-500);
}
.evidence-area .formats {
  font-size: 0.75rem;
  color: var(--color-gray-400);
  margin-top: 4px;
}

.evidence-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.evidence-thumb {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
}

.evidence-thumb img,
.evidence-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.evidence-thumb .remove-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Radio group */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.radio-group .radio-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.radio-group .radio-item:hover {
  border-color: var(--color-primary-light);
}
.radio-group .radio-item.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.radio-group .radio-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.radio-group .radio-item input[type='radio'] {
  margin-top: 0;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.radio-group .radio-item .radio-content {
  flex: 1;
}
.radio-group .radio-item .radio-content strong {
  font-size: 0.85rem;
  display: block;
}
.radio-group .radio-item .radio-content p {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 2px;
}
.radio-group .radio-item .radio-content .note {
  font-size: 0.75rem;
  color: var(--color-warning);
  margin-top: 4px;
  font-style: italic;
}

/* Confirmation summary */
.summary-section {
  margin-bottom: 16px;
}
.summary-section h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-gray-700);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--color-gray-100);
}
.summary-row:last-child {
  border-bottom: none;
}
.summary-row .label {
  color: var(--color-gray-500);
}
.summary-row .value {
  font-weight: 500;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-gray-100);
}
.summary-item:last-child {
  border-bottom: none;
}
.summary-item .item-info {
  flex: 1;
}
.summary-item .item-resolution {
  font-size: 0.75rem;
  color: var(--color-primary);
  margin-top: 2px;
}

/* Terms checkbox */
.terms-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  background: var(--color-gray-50);
  border-radius: var(--radius);
  margin-top: 16px;
}

.terms-check input[type='checkbox'] {
  margin-top: 2px;
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.terms-check label {
  font-size: 0.8rem;
  color: var(--color-gray-600);
  cursor: pointer;
}

/* Timeline (tracking page) */
.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-gray-200);
}

.timeline-item {
  position: relative;
  padding-bottom: 20px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -22px;
  top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-gray-300);
  border: 2px solid #fff;
}

.timeline-item.active .timeline-dot {
  background: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.timeline-item.completed .timeline-dot {
  background: var(--color-success);
}

.timeline-content {
  padding-left: 8px;
}
.timeline-content .status {
  font-size: 0.85rem;
  font-weight: 500;
}
.timeline-content .description {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 2px;
}
.timeline-content .date {
  font-size: 0.75rem;
  color: var(--color-gray-400);
  margin-top: 2px;
}

/* Tracking info card */
.tracking-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--color-primary-light);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.tracking-info .tracking-icon {
  font-size: 1.4rem;
}
.tracking-info .tracking-code {
  font-weight: 600;
  font-size: 0.9rem;
}
.tracking-info .tracking-link {
  font-size: 0.8rem;
  color: var(--color-primary);
  text-decoration: underline;
}

/* Loading / Error states */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.error-message {
  padding: 12px 16px;
  background: var(--color-danger-light);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius);
  color: var(--color-danger);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.success-message {
  padding: 16px;
  background: var(--color-success-light);
  border: 1px solid var(--color-success);
  border-radius: var(--radius);
  text-align: center;
}
.success-message h3 {
  color: var(--color-success);
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.success-message p {
  font-size: 0.85rem;
  color: var(--color-gray-600);
}

.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--color-gray-400);
}
.empty-state .empty-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.empty-state p {
  font-size: 0.9rem;
}

/* Process type selector */
.type-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.type-btn {
  flex: 1;
  padding: 10px;
  text-align: center;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all var(--transition);
  background: #fff;
  color: var(--color-gray-600);
}
.type-btn:hover {
  border-color: var(--color-primary-light);
}
.type-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Utilities */
.hidden {
  display: none !important;
}
.mt-2 {
  margin-top: 8px;
}
.mt-3 {
  margin-top: 12px;
}
.mt-4 {
  margin-top: 16px;
}
.mb-2 {
  margin-bottom: 8px;
}
.mb-3 {
  margin-bottom: 12px;
}
.text-center {
  text-align: center;
}
.text-sm {
  font-size: 0.85rem;
}
.text-xs {
  font-size: 0.75rem;
}
.text-muted {
  color: var(--color-gray-500);
}
.fw-500 {
  font-weight: 500;
}
.price {
  font-weight: 600;
  color: var(--color-gray-800);
}

/* Responsive */
@media (min-width: 640px) {
  .container {
    padding: 24px;
  }
  .page-header {
    padding: 32px 0 20px;
  }
  .page-header h1 {
    font-size: 1.5rem;
  }
  .card {
    padding: 24px;
  }
  .step-label {
    font-size: 0.75rem;
  }
  .step-line {
    width: 56px;
  }
  .variant-list-container {
    max-height: 300px;
  }
}