* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #f5f7fb;
  color: #111;
}

header {
  background: white;
  padding: 18px 8%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 3px 12px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #2563eb;
}

.logo span {
  color: #f97316;
}

nav a {
  margin: 0 15px;
  text-decoration: none;
  color: #111;
  font-weight: bold;
}

nav a:hover {
  color: #2563eb;
}

#menuBtn {
  display: none;
  font-size: 25px;
  background: none;
  border: none;
}

.hero {
  margin: 30px auto;
  width: 85%;
  min-height: 380px;
  border-radius: 25px;
  background: linear-gradient(rgba(0,0,0,.45), rgba(0,0,0,.45)),
  url("https://images.unsplash.com/photo-1441986300917-64674bd600d8?auto=format&fit=crop&w=1200&q=80");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  padding: 50px;
  color: white;
}

.hero h1 {
  font-size: 50px;
  margin-bottom: 15px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 25px;
}

.btn,
button {
  padding: 11px 20px;
  border: none;
  background: #2563eb;
  color: white;
  border-radius: 25px;
  cursor: pointer;
  text-decoration: none;
  font-weight: bold;
}

button:hover,
.btn:hover {
  background: #f97316;
}

.products,
.cart,
.contact {
  width: 85%;
  margin: 50px auto;
  text-align: center;
}

.products h2,
.cart h2,
.contact h2 {
  font-size: 34px;
  margin-bottom: 25px;
}

.filter {
  margin-bottom: 25px;
}

.filter button {
  margin: 6px;
}

.product-box {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  background: white;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,.12);
  transition: .3s;
}

.card:hover {
  transform: translateY(-8px);
}

.card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-content {
  padding: 18px;
  text-align: left;
}

.card-content h3 {
  margin-bottom: 8px;
}

.price {
  color: #2563eb;
  font-weight: bold;
  font-size: 20px;
  margin: 10px 0;
}

.cart {
  background: white;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,.1);
}

.cart-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #ddd;
  padding: 12px 0;
}

.contact {
  background: #111827;
  color: white;
  padding: 40px;
  border-radius: 22px;
}

.contact input {
  padding: 13px;
  width: 280px;
  max-width: 100%;
  border-radius: 25px;
  border: none;
  margin-right: 8px;
}

footer {
  background: #111827;
  color: white;
  text-align: center;
  padding: 20px;
}

@media(max-width: 900px) {
  .product-box {
    grid-template-columns: repeat(2, 1fr);
  }

  nav {
    display: none;
    position: absolute;
    top: 68px;
    right: 8%;
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,.15);
  }

  nav.show {
    display: flex;
    flex-direction: column;
  }

  nav a {
    margin: 10px;
  }

  #menuBtn {
    display: block;
  }

  .hero h1 {
    font-size: 36px;
  }
}

@media(max-width: 550px) {
  .product-box {
    grid-template-columns: 1fr;
  }

  .hero {
    width: 92%;
    padding: 25px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .contact input {
    margin-bottom: 10px;
  }
}