* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: Arial, sans-serif; background: #f9f9f9; }

#login-container, #store-container {
  display: none;
  padding: 20px;
}

#login-container.active, #store-container.active {
  display: block;
}

.login-box {
  max-width: 300px;
  margin: 100px auto;
  padding: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.login-box input, .login-box button {
  width: 100%;
  margin: 10px 0;
  padding: 10px;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.top-bar h2 {
  margin: 0;
}

.top-bar button {
  padding: 8px 16px;
  background-color: #d9534f;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.product {
  background: white;
  border-radius: 8px;
  padding: 10px;
  margin: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  width: 200px;
}

.products {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.product img {
  width: 100%;
  max-height: 150px;
  object-fit: contain;
}

.product-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0 5px;
}

.product-price {
  color: green;
}

.loading {
  text-align: center;
  margin: 20px;
}