body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 16px;
  background-color: #f4f4f9;
}

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

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.product-card {
  background: white;
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.product-card img {
  max-width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
}

.price {
  font-weight: bold;
  color: #2e7d32;
  font-size: 1.2rem;
  margin: 8px 0;
}

.buy-btn {
  display: block;
  width: 100%;
  text-align: center;
  background-color: #007bff;
  color: white;
  padding: 10px 0;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
}

.admin-container {
  max-width: 500px;
  margin: 0 auto;
  background: white;
  padding: 24px;
  border-radius: 8px;
}

form input {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  width: 100%;
  padding: 12px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}