/* ==================== RESET & VARIABLES ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #0A0A0A;
  --white: #FFFFFF;
  --gray-100: #F7F7F7;
  --gray-200: #E5E5E5;
  --gray-300: #D4D4D4;
  --gray-500: #737373;
  --gray-700: #404040;
  --accent: #FF6B35;
  --accent-light: #FFF0EB;
  --success: #10B981;
  --gold: #F59E0B;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
}

/* ==================== HEADER ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  z-index: 1000;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-bottom: 1px solid var(--gray-200);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3rem;
  max-width: 1600px;
  margin: 0 auto;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--black);
  letter-spacing: -0.5px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  color: var(--accent);
  font-size: 1.8rem;
}

.logo span {
  color: var(--accent);
}

.search-container {
  flex: 1;
  max-width: 600px;
  margin: 0 3rem;
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--gray-100);
  border-radius: 50px;
  padding: 0.4rem 0.5rem 0.4rem 1.2rem;
  border: 2px solid transparent;
  transition: all 0.3s;
}

.search-bar:focus-within {
  background: var(--white);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.95rem;
  outline: none;
  color: var(--black);
  padding: 0.5rem 0;
}

.search-bar input::placeholder {
  color: var(--gray-500);
}

.search-btn {
  background: var(--accent);
  border: none;
  padding: 0.7rem 1.25rem;
  border-radius: 50px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.search-btn:hover {
  background: #e55a2b;
  transform: scale(1.02);
}

.header-actions {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex-shrink: 0;
}

.header-action {
  color: var(--black);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

.header-action:hover,
.header-action.active {
  color: var(--accent);
}

.header-action .badge {
  position: absolute;
  top: -8px;
  right: -12px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 10px;
  font-weight: 600;
}

/* ==================== CART PAGE ==================== */
.cart-page {
  margin-top: 75px;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--gray-100) 0%, #fff 100%);
  padding: 3rem;
}

.cart-container {
  max-width: 1400px;
  margin: 0 auto;
}

/* ==================== PAGE HEADER ==================== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--gray-200);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -1.5px;
  color: var(--black);
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

.header-actions-buttons {
  display: flex;
  gap: 1rem;
}

/* ==================== BUTTONS ==================== */
.btn {
  padding: 0.9rem 1.8rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border: 2px solid var(--black);
}

.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--black);
  border: 2px solid var(--gray-300);
}

.btn-secondary:hover {
  border-color: var(--black);
  background: var(--black);
  color: var(--white);
}

.btn-sm {
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
}

.btn-checkout {
  width: 100%;
  justify-content: center;
  padding: 1rem;
  font-size: 1rem;
}

/* ==================== LOADING STATE ==================== */
.loading-state {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 2rem;
}

.loading-skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 14px;
  height: 500px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 2rem;
  text-align: center;
}

.empty-state i {
  font-size: 5rem;
  color: var(--gray-300);
  margin-bottom: 1.5rem;
}

.empty-state h2 {
  font-size: 1.8rem;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--gray-500);
  font-size: 1rem;
  margin-bottom: 2rem;
  max-width: 400px;
}

/* ==================== CART LAYOUT ==================== */
.cart-content {
  margin-bottom: 3rem;
}

.cart-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 2rem;
  align-items: start;
}

/* ==================== CART ITEMS ==================== */
.cart-items {
  background: var(--white);
  border-radius: 14px;
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.cart-items-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.cart-items-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--black);
}

.cart-items-header span {
  color: var(--gray-500);
  font-size: 0.9rem;
}

#cart-items-list {
  display: flex;
  flex-direction: column;
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr 120px 100px 100px 40px;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  transition: background 0.2s;
}

.cart-item:hover {
  background: var(--gray-100);
}

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

.item-image {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--gray-100);
}

.item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.item-image:hover img {
  transform: scale(1.05);
}

.item-details h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  cursor: pointer;
  transition: color 0.2s;
}

.item-details h4:hover {
  color: var(--accent);
}

.item-category {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
}

.item-variants {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.item-variants span {
  font-size: 0.75rem;
  color: var(--gray-700);
  background: var(--gray-100);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.item-price-mobile {
  display: none;
}

.stock-warning {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.4rem 0.6rem;
  background: #FEF3C7;
  border-radius: 6px;
  margin-top: 0.5rem;
}

.item-quantity {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gray-100);
  border-radius: 8px;
  padding: 0.25rem;
}

.qty-btn {
  background: var(--white);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--black);
}

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

.qty-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.item-quantity input {
  width: 40px;
  text-align: center;
  border: none;
  background: transparent;
  font-weight: 600;
  font-size: 0.95rem;
}

.item-price {
  text-align: right;
}

.item-price .price {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.25rem;
}

.item-price .original-price {
  display: block;
  font-size: 0.85rem;
  color: var(--gray-500);
  text-decoration: line-through;
}

.item-total {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--black);
  text-align: right;
}

.item-remove {
  background: none;
  border: none;
  color: var(--gray-500);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.item-remove:hover {
  background: #FEE2E2;
  color: #DC2626;
}

/* ==================== CART SUMMARY ==================== */
.cart-summary {
  background: var(--white);
  border-radius: 14px;
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
  position: sticky;
  top: 95px;
}

.cart-summary h3 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: var(--black);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.summary-row span:first-child {
  color: var(--gray-700);
}

.summary-row span:last-child {
  font-weight: 600;
  color: var(--black);
}

.discount-text {
  color: var(--success) !important;
}

.coupon-section {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.coupon-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.3s;
}

.coupon-input:focus {
  outline: none;
  border-color: var(--accent);
}

.summary-divider {
  height: 1px;
  background: var(--gray-200);
  margin: 1.5rem 0;
}

.summary-row.total {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.summary-row.total span {
  font-weight: 700;
  color: var(--black);
}

.summary-savings {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #D1FAE5;
  color: #065F46;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.summary-savings i {
  color: var(--success);
}

.trust-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
}

.trust-item i {
  font-size: 1.2rem;
  color: var(--accent);
}

.trust-item span {
  font-size: 0.7rem;
  color: var(--gray-700);
}

/* ==================== RECOMMENDATIONS ==================== */
.recommendations-section {
  margin-top: 4rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--black);
  margin-bottom: 0.25rem;
}

.section-header p {
  color: var(--gray-500);
  font-size: 0.9rem;
}

.recommendations-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.product-card {
  background: var(--white);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s;
  border: 1px solid var(--gray-200);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 35px rgba(0,0,0,0.1);
  border-color: transparent;
}

.product-image {
  position: relative;
  background: var(--gray-100);
  aspect-ratio: 1;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.product-card:hover .product-image img {
  transform: scale(1.06);
}

.product-badge {
  position: absolute;
  top: 0.7rem;
  left: 0.7rem;
  padding: 0.3rem 0.7rem;
  border-radius: 15px;
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-new {
  background: var(--black);
  color: var(--white);
}

.badge-sale {
  background: var(--accent);
  color: var(--white);
}

.badge-hot {
  background: var(--gold);
  color: var(--black);
}

.product-info {
  padding: 1rem;
}

.product-category {
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.product-name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--black);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin-bottom: 0.35rem;
}

.product-rating i {
  color: var(--gold);
  font-size: 0.7rem;
}

.product-rating span {
  font-size: 0.7rem;
  color: var(--gray-500);
  margin-left: 0.2rem;
}

.product-price {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.price-current {
  font-size: 1rem;
  font-weight: 700;
  color: var(--black);
}

.price-original {
  color: var(--gray-500);
  text-decoration: line-through;
  font-size: 0.8rem;
}

.price-discount {
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

/* ==================== MODAL ==================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--white);
  border-radius: 14px;
  padding: 2rem;
  max-width: 400px;
  width: 90%;
  animation: modalSlideIn 0.3s;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-content h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--black);
}

.modal-content p {
  color: var(--gray-500);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: 1rem;
}

.modal-actions .btn {
  flex: 1;
  justify-content: center;
}

/* ==================== TOAST ==================== */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--black);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 10px;
  display: none;
  z-index: 9999;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  font-size: 0.9rem;
}

.toast.show {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideIn 0.3s ease;
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: #ef4444;
}

.toast.warning {
  background: var(--gold);
  color: var(--black);
}

.toast.info {
  background: #3b82f6;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
  .cart-layout,
  .loading-state {
    grid-template-columns: 1fr 350px;
  }

  .recommendations-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .cart-item {
    grid-template-columns: 80px 1fr 100px 80px 80px 40px;
    gap: 1rem;
  }

  .item-image {
    width: 80px;
    height: 80px;
  }
}

@media (max-width: 968px) {
  .cart-layout,
  .loading-state {
    grid-template-columns: 1fr;
  }

  .cart-summary {
    position: static;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .header-actions-buttons {
    width: 100%;
    flex-direction: column;
  }

  .header-actions-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .recommendations-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cart-item {
    grid-template-columns: 1fr;
    gap: 1rem;
    position: relative;
    padding-right: 3rem;
  }

  .item-image {
    width: 100%;
    height: 200px;
  }

  .item-quantity {
    width: fit-content;
  }

  .item-price {
    display: none;
  }

  .item-price-mobile {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
  }

  .item-price-mobile .price {
    font-size: 1rem;
    font-weight: 600;
    color: var(--black);
  }

  .item-price-mobile .original-price {
    font-size: 0.85rem;
    color: var(--gray-500);
    text-decoration: line-through;
  }

  .item-total {
    font-size: 1.2rem;
  }

  .item-remove {
    position: absolute;
    top: 1rem;
    right: 1rem;
  }

  .trust-badges {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0.9rem 1.25rem;
  }

  .search-container {
    display: none;
  }

  .header-action span {
    display: none;
  }

  .cart-page {
    padding: 1.5rem;
    margin-top: 60px;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .recommendations-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .cart-page {
    padding: 1rem;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }

  .cart-items-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}