body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fa;
}
header {
  background: #2d3748;
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}
button {
  padding: 0.5rem 1rem;
  border: none;
  background: #3182ce;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background: #2b6cb0;
}
.login-container {
  max-width: 400px;
  margin: 100px auto;
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  text-align: center;
}
input {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 5px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  padding: 1rem;
}
.card {
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.card h3 {
  margin-top: 0;
}
.card .desc {
  font-size: 0.85rem;
  color: #555;
  max-height: 100px;
  overflow: auto;
  white-space: pre-wrap;
}
.card .price {
  color: green;
  font-weight: bold;
  margin-top: 0.5rem;
}