/* Font Import */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  background-color: #f8fafc;
  color: #1e293b;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

/* Mobile-first approach */
html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

/* Header Styles - Mobile First */
.header {
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.promo-banner {
  background: #7c3aed;
  color: white;
  text-align: center;
  padding: 6px 8px;
  font-size: 12px;
}

.promo-banner span:last-child {
  margin-left: 8px;
}

@media (min-width: 768px) {
  .promo-banner {
    padding: 8px;
    font-size: 14px;
  }
  .promo-banner span:last-child {
    margin-left: 16px;
  }
}

.header-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 16px;
}

@media (min-width: 768px) {
  .header-main {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 0;
  }
}

.header-left {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .header-left {
    gap: 32px;
    justify-content: flex-start;
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
}

@media (min-width: 768px) {
  .logo {
    gap: 8px;
  }
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: #ef4444;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 12px;
}

@media (min-width: 768px) {
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
}

.logo-text {
  font-weight: bold;
  font-size: 16px;
}

@media (min-width: 768px) {
  .logo-text {
    font-size: 20px;
  }
}

.nav-menu {
  display: none;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
    gap: 24px;
  }
}

.nav-link {
  text-decoration: none;
  color: #64748b;
  font-size: 14px;
  transition: color 0.2s;
}

.nav-link.active,
.nav-link:hover {
  color: #ef4444;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}

@media (min-width: 768px) {
  .header-right {
    gap: 16px;
  }
}

.phone {
  font-size: 12px;
  font-weight: 500;
}

@media (min-width: 768px) {
  .phone {
    font-size: 14px;
  }
}

.btn-monthly {
  background: #dcfce7;
  color: #16a34a;
  border: 1px solid #bbf7d0;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 10px;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 768px) {
  .btn-monthly {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
  }
}

.btn-monthly:hover,
.btn-monthly:active {
  background: #bbf7d0;
}

.btn-login {
  background: none;
  border: none;
  color: #64748b;
  font-size: 12px;
  cursor: pointer;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
  padding: 4px 8px;
}

@media (min-width: 768px) {
  .btn-login {
    font-size: 14px;
    padding: 0;
  }
}

.btn-login:hover,
.btn-login:active {
  color: #1e293b;
}

.language {
  border: none;
  background: none;
  font-size: 12px;
  cursor: pointer;
}

@media (min-width: 768px) {
  .language {
    font-size: 14px;
  }
}

.header-bottom {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-top: 1px solid #e2e8f0;
}

@media (min-width: 768px) {
  .header-bottom {
    gap: 16px;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
  }
}

.catalog-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 12px;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 768px) {
  .catalog-btn {
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
  }
}

.catalog-btn:hover,
.catalog-btn:active {
  background: #f1f5f9;
}

.search-box {
  flex: 1;
  position: relative;
}

.search-box i {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  color: #94a3b8;
  font-size: 12px;
}

@media (min-width: 768px) {
  .search-box {
    max-width: 400px;
  }
  .search-box i {
    left: 12px;
    font-size: 14px;
  }
}

.search-box input {
  width: 100%;
  padding: 8px 8px 8px 28px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 12px;
  outline: none;
  transition: border-color 0.2s;
}

@media (min-width: 768px) {
  .search-box input {
    padding: 10px 12px 10px 40px;
    border-radius: 8px;
    font-size: 14px;
  }
}

.search-box input:focus {
  border-color: #ef4444;
}

.header-actions {
  display: flex;
  gap: 4px;
}

@media (min-width: 768px) {
  .header-actions {
    gap: 8px;
  }
}

.action-btn {
  background: none;
  border: none;
  padding: 6px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
  -webkit-tap-highlight-color: transparent;
  font-size: 14px;
}

@media (min-width: 768px) {
  .action-btn {
    padding: 8px;
    border-radius: 6px;
    font-size: 16px;
  }
}

.action-btn:hover,
.action-btn:active {
  background: #f1f5f9;
}

/* Page System */
.page {
  display: none;
  min-height: calc(100vh - 120px);
}

.page.active {
  display: block;
}

/* Breadcrumb */
.breadcrumb {
  padding: 12px 16px;
  font-size: 12px;
  color: #64748b;
  overflow-x: auto;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .breadcrumb {
    padding: 16px 20px;
    max-width: 1200px;
    margin: 0 auto;
    font-size: 14px;
    overflow-x: visible;
    white-space: normal;
  }
}

.breadcrumb a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: #1e293b;
}

.breadcrumb .current {
  color: #1e293b;
  font-weight: 500;
}

.back-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 12px;
  transition: color 0.2s;
  padding: 8px;
  border-radius: 6px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .back-btn {
    gap: 8px;
    font-size: 14px;
    padding: 4px;
  }
}

.back-btn:hover,
.back-btn:active {
  color: #1e293b;
  background: #f1f5f9;
}

/* Product Page Styles - Mobile First */
.product-container {
  padding: 0 16px;
}

@media (min-width: 768px) {
  .product-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
}

.product-section {
  background: white;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .product-section {
    border-radius: 12px;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 32px;
  }
}

.product-images {
  display: flex;
  flex-direction: column;
  gap: 12px;
  order: 1;
}

@media (min-width: 768px) {
  .product-images {
    gap: 16px;
    order: 0;
  }
}

.main-image {
  position: relative;
  background: #f8fafc;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 1;
}

@media (min-width: 768px) {
  .main-image {
    border-radius: 12px;
  }
}

.main-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: 12px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .nav-btn {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }
}

.nav-btn:hover,
.nav-btn:active {
  background: white;
  transform: translateY(-50%) scale(1.1);
}

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

.prev-btn {
  left: 8px;
}

.next-btn {
  right: 8px;
}

@media (min-width: 768px) {
  .prev-btn {
    left: 16px;
  }
  .next-btn {
    right: 16px;
  }
}

.thumbnail-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px;
  justify-content: center;
}

@media (min-width: 768px) {
  .thumbnail-list {
    gap: 8px;
    justify-content: flex-start;
  }
}

.thumbnail {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s;
  background: none;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .thumbnail {
    width: 80px;
    height: 80px;
    border-radius: 8px;
  }
}

.thumbnail:hover,
.thumbnail:active {
  border-color: #94a3b8;
}

.thumbnail.active {
  border-color: #ef4444;
  transform: scale(1.05);
}

.thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  order: 2;
}

@media (min-width: 768px) {
  .product-details {
    gap: 24px;
    order: 0;
  }
}

.product-header h1 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .product-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
  }
}

.delivery-badge {
  display: inline-block;
  background: #fef3c7;
  color: #d97706;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 10px;
  font-weight: 500;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .delivery-badge {
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    margin-bottom: 16px;
  }
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
}

@media (min-width: 768px) {
  .product-meta {
    gap: 16px;
    font-size: 14px;
  }
}

.rating {
  display: flex;
  align-items: center;
  gap: 3px;
}

@media (min-width: 768px) {
  .rating {
    gap: 4px;
  }
}

.rating i {
  color: #fbbf24;
  font-size: 12px;
}

@media (min-width: 768px) {
  .rating i {
    font-size: 14px;
  }
}

.reviews {
  color: #64748b;
}

.availability {
  color: #16a34a;
  font-weight: 500;
}

.sku {
  color: #64748b;
  font-size: 10px;
}

@media (min-width: 768px) {
  .sku {
    font-size: 12px;
  }
}

.color-section h3,
.storage-section h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

@media (min-width: 768px) {
  .color-section h3,
  .storage-section h3 {
    font-size: 16px;
    margin-bottom: 12px;
  }
}

.color-options {
  display: flex;
  gap: 8px;
}

@media (min-width: 768px) {
  .color-options {
    gap: 12px;
  }
}

.color-option {
  background: none;
  border: 2px solid #e2e8f0;
  border-radius: 50%;
  padding: 3px;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .color-option {
    padding: 4px;
  }
}

.color-option:hover,
.color-option:active {
  border-color: #94a3b8;
}

.color-option.active {
  border-color: #1e293b;
  transform: scale(1.1);
}

.color-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

@media (min-width: 768px) {
  .color-circle {
    width: 32px;
    height: 32px;
  }
}

.color-circle.black {
  background: #1e293b;
}

.color-circle.desert {
  background: #fbbf24;
}

.color-circle.white {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
}

.storage-options {
  display: flex;
  gap: 6px;
}

@media (min-width: 768px) {
  .storage-options {
    gap: 8px;
  }
}

.storage-option {
  padding: 8px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: white;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 12px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .storage-option {
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
  }
}

.storage-option:hover,
.storage-option:active {
  border-color: #94a3b8;
}

.storage-option.active {
  border-color: #1e293b;
  background: #f8fafc;
  font-weight: 500;
}

.price-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

@media (min-width: 768px) {
  .price-section {
    gap: 8px;
  }
}

.discount-badge {
  display: inline-block;
  background: #ef4444;
  color: white;
  padding: 3px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  width: fit-content;
}

@media (min-width: 768px) {
  .discount-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
  }
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

@media (min-width: 768px) {
  .price-display {
    gap: 12px;
  }
}

.current-price {
  font-size: 24px;
  font-weight: 700;
  color: #ef4444;
}

@media (min-width: 768px) {
  .current-price {
    font-size: 32px;
  }
}

.original-price {
  font-size: 14px;
  color: #64748b;
  text-decoration: line-through;
}

@media (min-width: 768px) {
  .original-price {
    font-size: 18px;
  }
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (min-width: 768px) {
  .action-buttons {
    flex-direction: row;
    gap: 12px;
  }
}

.btn-primary {
  background: #ef4444;
  color: white;
  border: none;
  padding: 14px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .btn-primary {
    flex: 1;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    min-height: auto;
  }
}

.btn-primary:hover,
.btn-primary:active {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-wishlist {
  background: white;
  border: 1px solid #e2e8f0;
  padding: 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .btn-wishlist {
    padding: 16px;
    border-radius: 8px;
    min-height: auto;
  }
}

.btn-wishlist:hover,
.btn-wishlist:active {
  background: #f8fafc;
  border-color: #94a3b8;
}

.trade-in-section {
  background: #eff6ff;
  padding: 12px;
  border-radius: 6px;
}

@media (min-width: 768px) {
  .trade-in-section {
    padding: 16px;
    border-radius: 8px;
  }
}

.trade-in-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

@media (min-width: 768px) {
  .trade-in-header {
    gap: 8px;
    margin-bottom: 8px;
  }
}

.trade-in-badge {
  background: #3b82f6;
  color: white;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 500;
}

@media (min-width: 768px) {
  .trade-in-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
  }
}

.trade-in-title {
  font-weight: 600;
  font-size: 12px;
}

@media (min-width: 768px) {
  .trade-in-title {
    font-size: 14px;
  }
}

.trade-in-text {
  font-size: 12px;
  color: #64748b;
}

@media (min-width: 768px) {
  .trade-in-text {
    font-size: 14px;
  }
}

/* Checkout Page Styles - Mobile First */
.checkout-container {
  padding: 0 16px;
}

@media (min-width: 768px) {
  .checkout-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
}

.checkout-layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (min-width: 768px) {
  .checkout-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
  }
}

.checkout-forms {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 768px) {
  .checkout-forms {
    gap: 24px;
  }
}

.form-section {
  background: white;
  padding: 16px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
  .form-section {
    padding: 24px;
    border-radius: 12px;
  }
}

.form-section h2 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .form-section h2 {
    font-size: 18px;
    margin-bottom: 16px;
  }
}

.form-group {
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .form-group {
    margin-bottom: 16px;
  }
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 4px;
  color: #374151;
}

@media (min-width: 768px) {
  .form-group label {
    font-size: 14px;
    margin-bottom: 6px;
  }
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  font-size: 14px;
  transition: border-color 0.2s;
  min-height: 44px;
}

@media (min-width: 768px) {
  .form-group input,
  .form-group select {
    padding: 12px;
    border-radius: 6px;
    min-height: auto;
  }
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 768px) {
  .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-top: 8px;
}

@media (min-width: 768px) {
  .checkbox-group {
    gap: 8px;
    margin-top: 12px;
  }
}

.checkbox-group input[type="checkbox"] {
  margin-top: 2px;
  min-height: auto;
}

.checkbox-group label {
  font-size: 12px;
  color: #64748b;
  line-height: 1.4;
}

@media (min-width: 768px) {
  .checkbox-group label {
    font-size: 14px;
  }
}

.delivery-option,
.payment-option {
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 12px;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .delivery-option,
  .payment-option {
    border-radius: 8px;
    padding: 16px;
  }
}

.delivery-option:hover,
.delivery-option:active,
.payment-option:hover,
.payment-option:active {
  border-color: #94a3b8;
  background: #f8fafc;
}

.delivery-option input,
.payment-option input {
  margin-right: 8px;
  min-height: auto;
}

@media (min-width: 768px) {
  .delivery-option input,
  .payment-option input {
    margin-right: 12px;
  }
}

.delivery-label,
.payment-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.delivery-info,
.payment-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

@media (min-width: 768px) {
  .delivery-info,
  .payment-info {
    gap: 12px;
  }
}

.delivery-info i,
.payment-info i {
  color: #64748b;
  font-size: 14px;
}

@media (min-width: 768px) {
  .delivery-info i,
  .payment-info i {
    font-size: 16px;
  }
}

.delivery-info strong,
.payment-info strong {
  display: block;
  font-weight: 600;
  margin-bottom: 2px;
  font-size: 12px;
}

@media (min-width: 768px) {
  .delivery-info strong,
  .payment-info strong {
    font-size: 14px;
  }
}

.delivery-info p,
.payment-info p {
  font-size: 10px;
  color: #64748b;
  margin: 0;
}

@media (min-width: 768px) {
  .delivery-info p,
  .payment-info p {
    font-size: 12px;
  }
}

.delivery-price {
  font-weight: 600;
  color: #16a34a;
  font-size: 12px;
}

@media (min-width: 768px) {
  .delivery-price {
    font-size: 14px;
  }
}

.order-summary {
  order: -1;
}

@media (min-width: 768px) {
  .order-summary {
    position: sticky;
    top: 160px;
    height: fit-content;
    order: 0;
  }
}

.summary-card {
  background: white;
  padding: 16px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
  .summary-card {
    padding: 24px;
    border-radius: 12px;
  }
}

.summary-card h2 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .summary-card h2 {
    font-size: 18px;
    margin-bottom: 20px;
  }
}

.order-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .order-item {
    gap: 16px;
    margin-bottom: 20px;
  }
}

.item-image {
  position: relative;
  flex-shrink: 0;
}

.item-image img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

@media (min-width: 768px) {
  .item-image img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
  }
}

.item-quantity {
  position: absolute;
  top: -6px;
  right: -6px;
  background: #ef4444;
  color: white;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
}

@media (min-width: 768px) {
  .item-quantity {
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    font-size: 12px;
  }
}

.item-details h3 {
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 3px;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .item-details h3 {
    font-size: 14px;
    margin-bottom: 4px;
  }
}

.item-details p {
  font-size: 10px;
  color: #64748b;
  margin-bottom: 6px;
}

@media (min-width: 768px) {
  .item-details p {
    font-size: 12px;
    margin-bottom: 8px;
  }
}

.item-price {
  font-weight: 600;
  color: #1e293b;
  font-size: 12px;
}

@media (min-width: 768px) {
  .item-price {
    font-size: 14px;
  }
}

.summary-divider {
  height: 1px;
  background: #e2e8f0;
  margin: 12px 0;
}

@media (min-width: 768px) {
  .summary-divider {
    margin: 16px 0;
  }
}

.pricing-details {
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .pricing-details {
    margin-bottom: 20px;
  }
}

.pricing-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 12px;
}

@media (min-width: 768px) {
  .pricing-row {
    margin-bottom: 8px;
    font-size: 14px;
  }
}

.pricing-row.total {
  font-weight: 600;
  font-size: 14px;
  padding-top: 6px;
}

@media (min-width: 768px) {
  .pricing-row.total {
    font-size: 16px;
    padding-top: 8px;
  }
}

.pricing-row .free {
  color: #16a34a;
}

.pricing-row .discount {
  color: #ef4444;
}

.btn-complete-order {
  width: 100%;
  background: #ef4444;
  color: white;
  border: none;
  padding: 14px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 12px;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .btn-complete-order {
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 16px;
    min-height: auto;
  }
}

.btn-complete-order:hover,
.btn-complete-order:active {
  background: #dc2626;
  transform: translateY(-1px);
}

.terms-text {
  text-align: center;
}

.terms-text p {
  font-size: 10px;
  color: #64748b;
  line-height: 1.4;
}

@media (min-width: 768px) {
  .terms-text p {
    font-size: 12px;
  }
}

.terms-text a {
  color: #3b82f6;
  text-decoration: none;
}

.terms-text a:hover {
  text-decoration: underline;
}

/* Secure Pages Styles - Mobile First */
.secure-page {
  background: #f1f5f9;
  min-height: 100vh;
  padding: 16px;
}

@media (min-width: 768px) {
  .secure-page {
    padding: 20px;
  }
}

.secure-container {
  max-width: 400px;
  margin: 0 auto;
  padding-top: 20px;
}

@media (min-width: 768px) {
  .secure-container {
    max-width: 500px;
    padding-top: 40px;
  }
}

.secure-card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
  .secure-card {
    border-radius: 16px;
    padding: 32px;
  }
}

.secure-card-header {
  text-align: center;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .secure-card-header {
    margin-bottom: 32px;
  }
}

.secure-icon {
  width: 56px;
  height: 56px;
  background: #ef4444;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

@media (min-width: 768px) {
  .secure-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
  }
}

.secure-icon i {
  color: white;
  font-size: 20px;
}

@media (min-width: 768px) {
  .secure-icon i {
    font-size: 24px;
  }
}

.secure-card-header h1 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

@media (min-width: 768px) {
  .secure-card-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
  }
}

.secure-card-header p {
  color: #64748b;
  font-size: 12px;
}

@media (min-width: 768px) {
  .secure-card-header p {
    font-size: 14px;
  }
}

.payment-info {
  background: #f8fafc;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .payment-info {
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 32px;
  }
}

.payment-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 12px;
}

@media (min-width: 768px) {
  .payment-row {
    margin-bottom: 8px;
    font-size: 14px;
  }
}

.payment-row:last-child {
  margin-bottom: 0;
}

.payment-row .amount {
  font-weight: 700;
  font-size: 16px;
  color: #ef4444;
}

@media (min-width: 768px) {
  .payment-row .amount {
    font-size: 18px;
  }
}

.card-form,
.sms-form {
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .card-form,
  .sms-form {
    margin-bottom: 24px;
  }
}

.card-form .form-group,
.sms-form .form-group {
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .card-form .form-group,
  .sms-form .form-group {
    margin-bottom: 20px;
  }
}

.card-form label,
.sms-form label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #374151;
}

@media (min-width: 768px) {
  .card-form label,
  .sms-form label {
    font-size: 14px;
    margin-bottom: 8px;
  }
}

.card-form input,
.sms-form input {
  width: 100%;
  padding: 14px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  font-family: "Courier New", monospace;
  transition: all 0.2s;
  min-height: 48px;
}

@media (min-width: 768px) {
  .card-form input,
  .sms-form input {
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    min-height: auto;
  }
}

.card-form input:focus,
.sms-form input:focus {
  outline: none;
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.expiry-inputs {
  display: flex;
  align-items: center;
  gap: 6px;
}

@media (min-width: 768px) {
  .expiry-inputs {
    gap: 8px;
  }
}

.expiry-inputs input {
  text-align: center;
  width: 50px;
}

@media (min-width: 768px) {
  .expiry-inputs input {
    width: 60px;
  }
}

.expiry-inputs span {
  font-size: 16px;
  font-weight: bold;
  color: #64748b;
}

@media (min-width: 768px) {
  .expiry-inputs span {
    font-size: 18px;
  }
}

.phone-inputs {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .phone-inputs {
    gap: 8px;
    flex-wrap: nowrap;
  }
}

.phone-prefix {
  padding: 14px 10px;
  background: #f1f5f9;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #374151;
  min-height: 48px;
  display: flex;
  align-items: center;
}

@media (min-width: 768px) {
  .phone-prefix {
    padding: 16px 12px;
    border-radius: 8px;
    font-size: 16px;
    min-height: auto;
  }
}

.phone-parts {
  display: flex;
  align-items: center;
  gap: 3px;
}

@media (min-width: 768px) {
  .phone-parts {
    gap: 4px;
  }
}

.phone-parts span {
  font-size: 16px;
  color: #64748b;
}

@media (min-width: 768px) {
  .phone-parts span {
    font-size: 18px;
  }
}

.phone-parts input {
  width: 40px;
  text-align: center;
}

@media (min-width: 768px) {
  .phone-parts input {
    width: 50px;
  }
}

.phone-inputs input:last-child {
  flex: 1;
  min-width: 120px;
}

@media (max-width: 767px) {
  .phone-inputs input:last-child {
    width: 100%;
    margin-top: 8px;
  }
}

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

@media (min-width: 768px) {
  .form-actions {
    flex-direction: row;
    gap: 12px;
    margin-bottom: 16px;
  }
}

.btn-confirm {
  background: #ef4444;
  color: white;
  border: none;
  padding: 14px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .btn-confirm {
    flex: 1;
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    min-height: auto;
  }
}

.btn-confirm:hover:not(:disabled),
.btn-confirm:active:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-confirm:disabled {
  background: #d1d5db;
  color: #9ca3af;
  cursor: not-allowed;
  transform: none;
}

.btn-cancel {
  background: white;
  color: #64748b;
  border: 1px solid #d1d5db;
  padding: 14px 20px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .btn-cancel {
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    min-height: auto;
  }
}

.btn-cancel:hover,
.btn-cancel:active {
  background: #f8fafc;
  border-color: #94a3b8;
}

.btn-resend {
  width: 100%;
  background: none;
  color: #ef4444;
  border: none;
  padding: 10px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 4px;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .btn-resend {
    padding: 12px;
    font-size: 14px;
    border-radius: 6px;
    min-height: auto;
  }
}

.btn-resend:hover,
.btn-resend:active {
  background: #fef2f2;
}

.sms-input {
  text-align: center;
  font-size: 20px;
  letter-spacing: 3px;
}

@media (min-width: 768px) {
  .sms-input {
    font-size: 24px;
    letter-spacing: 4px;
  }
}

.sms-info {
  font-size: 10px;
  color: #64748b;
  margin-top: 4px;
  text-align: center;
}

@media (min-width: 768px) {
  .sms-info {
    font-size: 12px;
    margin-top: 6px;
  }
}

.error-message {
  color: #ef4444;
  font-size: 12px;
  font-weight: 500;
  margin-top: 6px;
  text-align: center;
}

@media (min-width: 768px) {
  .error-message {
    font-size: 14px;
    margin-top: 8px;
  }
}

.timer-section {
  text-align: center;
  margin-top: 16px;
}

@media (min-width: 768px) {
  .timer-section {
    margin-top: 20px;
  }
}

.timer {
  font-family: "Courier New", monospace;
  font-weight: bold;
  color: #ef4444;
  font-size: 14px;
}

@media (min-width: 768px) {
  .timer {
    font-size: 16px;
  }
}

/* Specifications Section Styles - Mobile First */
.specifications-section {
  background: #f8f9fa;
  padding: 30px 0;
  margin-top: 20px;
}

@media (min-width: 768px) {
  .specifications-section {
    padding: 60px 0;
    margin-top: 40px;
  }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

.specs-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 30px;
}

@media (min-width: 768px) {
  .specs-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
  }
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .specs-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
  }
}

.spec-category {
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (min-width: 768px) {
  .spec-category {
    border-radius: 12px;
    padding: 30px;
  }
}

.spec-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.spec-category h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #3498db;
}

@media (min-width: 768px) {
  .spec-category h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
  }
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (min-width: 768px) {
  .spec-list {
    gap: 12px;
  }
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 6px 0;
  border-bottom: 1px solid #ecf0f1;
}

@media (min-width: 768px) {
  .spec-item {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0;
    padding: 8px 0;
  }
}

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

.spec-label {
  font-weight: 500;
  color: #7f8c8d;
  font-size: 12px;
}

@media (min-width: 768px) {
  .spec-label {
    min-width: 120px;
    flex-shrink: 0;
    font-size: 14px;
  }
}

.spec-value {
  font-weight: 600;
  color: #2c3e50;
  font-size: 12px;
}

@media (min-width: 768px) {
  .spec-value {
    text-align: right;
    flex: 1;
    font-size: 14px;
  }
}

/* Touch and Click Improvements */
button,
[onclick],
.thumbnail,
.color-option,
.storage-option,
.delivery-option,
.payment-option {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

/* iOS Safari specific fixes */
@supports (-webkit-touch-callout: none) {
  button,
  [onclick] {
    -webkit-appearance: none;
    -webkit-touch-callout: none;
  }
}

/* Ensure minimum touch target size */
@media (max-width: 767px) {
  button,
  [onclick],
  .thumbnail,
  .color-option,
  .storage-option {
    min-height: 44px;
    min-width: 44px;
  }
}

/* Loading states for better UX */
.btn-primary:disabled,
.btn-complete-order:disabled,
.btn-confirm:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
}

/* Focus states for accessibility */
button:focus,
[onclick]:focus,
input:focus,
select:focus {
  outline: 2px solid #ef4444;
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn-primary,
  .btn-complete-order,
  .btn-confirm {
    border: 2px solid currentColor;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}