/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #fff;
  color: #111;
}

/* Header */
header {
  background-color: #000;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
header .logo img {
  height: 40px;
}
header h1 {
  font-size: 1.5rem;
  letter-spacing: 1px;
}

/* Navigation */
.category-nav {
  margin-top: 1rem;
}
.category-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}
.category-nav li {
  cursor: pointer;
  transition: color 0.3s, border-bottom 0.3s;
  padding-bottom: 5px;
}
.category-nav li:hover,
.category-nav li.active {
  color: #ff6600;
  border-bottom: 2px solid #ff6600;
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}
.product-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  background-color: #fafafa;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.product-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}
.product-info {
  padding: 1rem;
}
.product-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.price {
  font-weight: bold;
  color: #000;
  font-size: 1rem;
}
.shipping {
  color: #28a745;
  font-weight: 600;
  margin-top: 0.25rem;
}
.view-btn {
  background-color: #ff6600;
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-radius: 4px;
  margin-top: 0.5rem;
}
.view-btn:hover {
  background-color: #e05500;
}

/* Footer */
footer {
  text-align: center;
  background-color: #000;
  color: #fff;
  padding: 1rem;
  font-size: 0.9rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow-y: auto;
  background-color: rgba(0, 0, 0, 0.8);
}
.modal-content {
  background-color: #fff;
  margin: 4% auto;
  padding: 1rem;
  width: 90%;
  max-width: 900px;
  border-radius: 8px;
  position: relative;
}
.close-btn {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 2rem;
  color: #333;
  cursor: pointer;
}
.modal-body {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.modal-images {
  flex: 1 1 45%;
}
.modal-details {
  flex: 1 1 45%;
}
.modal-images img {
  width: 100%;
  border-radius: 8px;
}
.modal-gallery {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}
.modal-gallery img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 4px;
}
.modal-gallery img:hover {
  border-color: #ff6600;
}
.buy-btn {
  margin-top: 1rem;
  background-color: #ff6600;
  border: none;
  padding: 0.75rem 1.5rem;
  color: white;
  font-weight: bold;
  cursor: pointer;
  border-radius: 4px;
}
.buy-btn:hover {
  background-color: #e05500;
}