body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: #f3f4f6;
  color: #111827;
}

header {
  background: linear-gradient(to right, #1e3a8a, #2563eb);
  color: white;
  padding: 2rem;
  text-align: center;
}

.container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 1rem;
}

.car-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.car {
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
}

.car img {
  width: 100%;
  border-radius: 6px;
  height: 160px;
  object-fit: cover;
}

form {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  margin-top: 2rem;
}

input, textarea {
  width: 100%;
  padding: 0.75rem;
  margin: 0.5rem 0;
  border: 1px solid #d1d5db;
  border-radius: 6px;
}

button {
  background: #2563eb;
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}