* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #3c3c3c;
  --color-text: #1c1d1d;
  --color-text-light: #666666;
  --color-accent: #5e7e87;
  --color-success: #2ab02f;
  --color-error: #fe6666;
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-border: #e0e0e0;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --max-width: 600px;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 300;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  margin-bottom: 2rem;
}

.logo {
  display: inline-block;
  text-decoration: none;
}

.logo-text {
  font-family: 'Century Gothic', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
}

.logo-image {
  max-height: 40px;
  width: auto;
}

/* Main content */
main {
  flex: 1;
}

/* Steps */
.step {
  display: none;
}

.step.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.hidden {
  display: none !important;
}

/* Typography */
h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.subtitle {
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

/* Forms */
.form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 300;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(60, 60, 60, 0.1);
}

.form-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.form-divider::before,
.form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Contact fieldset - groups email/phone alternatives */
.contact-fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 0;
  background: var(--color-bg-secondary);
}

.contact-fieldset legend {
  padding: 0 0.5rem;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.contact-fieldset .form-group {
  margin-bottom: 0;
}

.contact-fieldset .form-divider {
  margin: 0.75rem 0;
}

/* Return fee notice */
.return-fee-notice {
  text-align: center;
  padding: 1rem;
  background: #fef9e7;
  border: 1px solid #f4d03f;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.return-fee-notice p {
  margin: 0;
  color: #9a7b0a;
  font-weight: 500;
}

.return-fee-notice.fee-waived {
  background: #e8f5e9;
  border-color: #4caf50;
}

.return-fee-notice.fee-waived p {
  color: #2e7d32;
}

/* Address confirmation */
.address-confirm {
  margin-bottom: 1.5rem;
}

.address-confirm h3 {
  margin-bottom: 1rem;
}

.address-confirm input {
  width: 100%;
}

.form-row-split {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1rem;
}

@media (max-width: 480px) {
  .form-row-split {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border: 1px solid #252627;
}

.btn-primary:hover {
  background: #2a2a2a;
}

.btn-primary:disabled {
  background: #999999;
  border-color: #999999;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-secondary);
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error messages */
.error-message {
  padding: 0.875rem 1rem;
  background: #fff5f5;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-sm);
  color: var(--color-error);
  font-size: 0.875rem;
}

.error-message p {
  margin-bottom: 1rem;
}

.error-message .view-return-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.error-message .view-return-btn:hover {
  background: #2a2a2a;
}

/* Items list */
.items-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

/* View returns button container */
.view-returns-container {
  margin-bottom: 1.5rem;
}

.view-returns-btn {
  width: 100%;
}

/* Returns list (multiple returns) */
.returns-list-container {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.returns-list-container h4 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.returns-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.return-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, background 0.2s;
}

.return-list-item:hover {
  border-color: var(--color-primary);
  background: rgba(60, 60, 60, 0.03);
}

.return-list-info {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.return-list-date {
  font-weight: 500;
  font-size: 0.875rem;
}

.return-list-items {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.return-list-tracking {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-family: monospace;
}

.return-list-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-primary);
  font-family: monospace;
}

.returns-list-close {
  width: 100%;
}

.item-card {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.item-card:hover {
  border-color: var(--color-primary);
}

.item-card.selected {
  border-color: var(--color-primary);
  background: rgba(60, 60, 60, 0.03);
}

/* Unavailable items (already in return or refunded) */
.item-card.item-unavailable {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--color-bg-secondary);
}

.item-card.item-unavailable:hover {
  border-color: var(--color-border);
}

/* Item title row with badge */
.item-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}

.item-title-row .item-title {
  margin-bottom: 0;
}

/* Status badges */
.item-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.item-badge-refunded {
  background: #fee2e2;
  color: #dc2626;
}

.item-badge-unfulfilled {
  background: #e5e7eb;
  color: #6b7280;
}

.item-badge-in-return {
  background: #fef3c7;
  color: #d97706;
  cursor: pointer;
  text-decoration: none;
}

.item-badge-in-return:hover {
  background: #fde68a;
  text-decoration: none;
}

.item-checkbox {
  width: 20px;
  height: 20px;
  margin-top: 0.25rem;
  accent-color: var(--color-primary);
}

.item-image {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
}

.item-details {
  flex: 1;
}

.item-title {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.item-variant {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.item-quantity {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Quantity stepper for items with qty > 1 */
.item-qty-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.qty-label {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.qty-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.qty-btn:hover:not(:disabled) {
  background: var(--color-bg-secondary);
}

.qty-btn:disabled {
  color: var(--color-border);
  cursor: not-allowed;
}

.qty-value {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 32px;
  font-size: 0.875rem;
  font-weight: 500;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}

.qty-max {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Reason select */
.reason-group {
  margin-top: 1rem;
}

.reason-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.875rem;
}

/* Confirm items */
.confirm-items {
  margin-bottom: 2rem;
}

.confirm-section {
  margin-bottom: 1.5rem;
}

.confirm-section:last-child {
  margin-bottom: 0;
}

.confirm-section-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.confirm-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.confirm-item:last-child {
  border-bottom: none;
}

.confirm-item-unfulfilled {
  background: #fef3c7;
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 0.5rem;
}

.confirm-item-unfulfilled:last-child {
  margin-bottom: 0;
}

.confirm-item-image {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.confirm-item-details {
  flex: 1;
}

/* Step actions */
.step-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.step-actions .btn {
  flex: 1;
}

/* Return name display */
.return-name-display {
  text-align: center;
  padding: 1rem;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.return-name-display p {
  margin: 0;
}

.return-name-display span {
  font-family: monospace;
  font-size: 1.125rem;
}

/* QR Code section */
.qr-container {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.qr-container img {
  width: 280px;
  height: 280px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
}

.label-free-code {
  font-size: 1.5rem;
  font-weight: 600;
  font-family: monospace;
  padding: 1.5rem 2rem;
  background: var(--color-bg-secondary);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.no-qr-notice {
  text-align: center;
  padding: 1rem;
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  color: #92400e;
}

.no-qr-notice a {
  color: #92400e;
  font-weight: 500;
}

.return-info {
  text-align: center;
  margin-bottom: 2rem;
}

.return-info p {
  margin-bottom: 0.5rem;
}

.return-info a {
  color: var(--color-accent);
  text-decoration: none;
}

.return-info a:hover {
  text-decoration: underline;
}

.tracking-notice {
  color: var(--color-text-light);
  font-size: 0.875rem;
  font-style: italic;
  margin-top: 0.5rem;
}

/* Return items summary */
.return-items-summary {
  background: var(--color-bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.return-items-summary h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.summary-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.summary-item-image {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.summary-item-details .item-title {
  font-weight: 500;
  font-size: 0.9rem;
}

.summary-item-details .item-variant,
.summary-item-details .item-quantity {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Return handling notice */
.return-handling-notice {
  text-align: center;
  padding: 1rem;
  background: #f0f9ff;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  border: 1px solid #bae6fd;
}

.return-handling-notice p {
  margin: 0;
  color: #0369a1;
  font-weight: 500;
}

/* Instructions */
.instructions {
  background: var(--color-bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.instructions ol {
  padding-left: 1.25rem;
}

.instructions li {
  margin-bottom: 0.5rem;
}

.instructions li:last-child {
  margin-bottom: 0;
}

/* Footer */
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  .item-card {
    flex-wrap: wrap;
  }

  .item-image {
    width: 60px;
    height: 60px;
  }
}