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

:root {
  --primary-color: #1DBF60;
  --secondary-color: #ffffff;
  --text-color: #333333;
  --border-color: #e0e0e0;
  --bg-light: #f5f5f5;
  --padding-small: 8px;
  --padding-medium: 16px;
  --padding-large: 24px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #ffffff;
  color: var(--text-color);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--padding-medium);
}

/* NAVBAR */
.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: var(--padding-medium) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--padding-large);
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
}

.search-bar {
  flex: 1;
  display: flex;
  gap: 8px;
  max-width: 400px;
}

.search-bar input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
}

.search-bar button {
  padding: 10px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}

.search-bar button:hover {
  background-color: #18a851;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--padding-large);
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--primary-color);
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #1DBF60 0%, #15a84a 100%);
  color: white;
  padding: 60px var(--padding-medium);
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 20px;
  margin-bottom: 32px;
  opacity: 0.9;
}

/* FILTERS */
.filters {
  padding: var(--padding-large) var(--padding-medium);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: var(--padding-medium);
  overflow-x: auto;
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background-color: white;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* PRODUCTS SECTION */
.products-section {
  padding: var(--padding-large) var(--padding-medium);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--padding-large);
}

.product-card {
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.product-image {
  width: 100%;
  aspect-ratio: 0.75;
  object-fit: cover;
  background-color: var(--bg-light);
}

.product-content {
  padding: var(--padding-medium);
}

.product-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  height: 2.8em;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.product-price {
  font-size: 16px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.product-rating {
  font-size: 12px;
  color: #666;
  margin-bottom: 12px;
}

.product-actions {
  display: flex;
  gap: 8px;
}

.btn-small {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-add-cart {
  background-color: var(--primary-color);
  color: white;
}

.btn-add-cart:hover {
  background-color: #18a851;
}

.btn-wishlist {
  background-color: var(--bg-light);
  color: var(--text-color);
}

.btn-wishlist:hover {
  background-color: #e0e0e0;
}

/* BUTTONS */
.btn-primary,
.btn-secondary {
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #18a851;
}

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

.btn-secondary:hover {
  background-color: #e0e0e0;
}

.btn-full {
  width: 100%;
}

/* FORMS */
.form-group {
  margin-bottom: var(--padding-medium);
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
}

.form-control,
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

.form-control:focus,
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(29, 191, 96, 0.1);
}

/* AUTH FORMS */
.auth-form {
  max-width: 400px;
  margin: 60px auto;
  padding: var(--padding-large);
  background-color: var(--bg-light);
  border-radius: 8px;
}

.auth-form h1 {
  margin-bottom: var(--padding-large);
  font-size: 28px;
}

.auth-link {
  text-align: center;
  margin-top: var(--padding-medium);
}

.auth-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

/* PRODUCT DETAIL */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--padding-large);
  margin: var(--padding-large) 0;
}

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

.main-image {
  width: 100%;
  border-radius: 8px;
  background-color: var(--bg-light);
}

.thumbnail-images {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.thumbnail-images img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}

.thumbnail-images img:hover {
  border-color: var(--primary-color);
}

.product-info h1 {
  font-size: 32px;
  margin-bottom: 12px;
}

.rating {
  display: inline-block;
  font-size: 14px;
  color: #666;
  margin-bottom: 16px;
}

.price {
  font-size: 32px;
  font-weight: bold;
  color: var(--primary-color);
}

.shipping-info {
  display: block;
  font-size: 14px;
  color: #666;
  margin-top: 8px;
}

.note-section {
  background-color: var(--bg-light);
  padding: var(--padding-medium);
  border-radius: 4px;
  margin-top: var(--padding-large);
  font-size: 14px;
}

/* CART */
.cart-container {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: var(--padding-large);
  margin: var(--padding-large) 0;
}

.cart-items table {
  width: 100%;
  border-collapse: collapse;
}

.cart-items th,
.cart-items td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.cart-items th {
  background-color: var(--bg-light);
  font-weight: 600;
}

.cart-summary {
  background-color: var(--bg-light);
  padding: var(--padding-large);
  border-radius: 8px;
  height: fit-content;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 14px;
}

.summary-row.total {
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  font-weight: bold;
  font-size: 16px;
}

/* FOOTER */
.footer {
  background-color: #1a1a1a;
  color: #e0e0e0;
  margin-top: 60px;
}

.footer-content {
  padding: var(--padding-large) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--padding-large);
  margin-bottom: var(--padding-large);
}

.footer-section h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: white;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 8px;
}

.footer-section a {
  color: #e0e0e0;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: var(--primary-color);
}

.newsletter-form {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.newsletter-form input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #333;
  border-radius: 4px;
  background-color: #2a2a2a;
  color: white;
  font-size: 13px;
}

.newsletter-form input::placeholder {
  color: #888;
}

.newsletter-form button {
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

.payment-info {
  font-size: 12px;
  margin-top: 12px;
  color: #999;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: var(--padding-large);
  text-align: center;
  font-size: 12px;
  color: #999;
}

.footer-bottom p {
  margin-bottom: 4px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: var(--padding-medium);
  }

  .search-bar {
    max-width: 100%;
  }

  .hero h1 {
    font-size: 32px;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--padding-medium);
  }

  .product-detail {
    grid-template-columns: 1fr;
  }

  .cart-container {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .nav-links {
    flex-direction: column;
    gap: var(--padding-medium);
  }

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

  .hero h1 {
    font-size: 24px;
  }

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