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

body {
  background-color: #f8fafc;
  color: #1f2937;
}

/* HEADER */
.header {
  background: #ffffff;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e5e7eb;
}

.header h1 {
  font-size: 22px;
  font-weight: 700;
}

.header nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #2563eb;
  font-weight: 500;
}

.header nav a:hover {
  text-decoration: underline;
}

/* CONTAINER */
.container {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 20px;
}

/* BOOK CARD */
.book-card {
  background: #ffffff;
  padding: 20px 24px;
  margin-bottom: 25px;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.book-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

.book-card h2 {
  font-size: 20px;
  margin-bottom: 8px;
  color: #111827;
}

.book-card p {
  font-size: 14px;
  margin: 4px 0;
  color: #374151;
}

.price {
  font-size: 18px;
  font-weight: 700;
  color: #16a34a;
  margin-top: 8px;
}

.seller {
  margin-top: 6px;
  font-size: 13px;
  color: #6b7280;
}
.book-image {
  width: 200%;
  max-width: 200px;
  height: 200px;
  object-fit: contain;
  display: block;
  margin-top: 10px;
}