:root {
  --primary: #2c3e50;
  --secondary: #34495e;
  --accent: #b8860b;
  --light-bg: #f8f5f0;
  --card-bg: #ffffff;
  --text: #333;
  --text-light: #666;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--light-bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--primary);
  color: #fff;
  padding: 30px 0;
}

.header-inner {
  text-align: center;
}

header h1 a {
  color: #fff;
  text-decoration: none;
  font-size: 2.5rem;
}

.tagline {
  font-style: italic;
  color: #ddd;
}

/* Nav */
.nav-bar {
  background: var(--secondary);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.nav-inner a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
}

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

/* Intro */
.intro {
  text-align: center;
  margin: 40px 0;
}

.intro h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* Catalogue controls */
.catalogue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
}

.controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

#searchInput {
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  min-width: 250px;
  font-size: 1rem;
}

#conditionFilter, #sortSelect {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

button {
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background: #9a7200;
}

/* Book grid */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 25px;
}

.book-card {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.book-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.book-cover {
  width: 100%;
  height: 280px;
  object-fit: contain;
  background: #f0f0f0;
  padding: 10px;
}

.book-info {
  padding: 15px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.book-title {
  font-weight: bold;
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.book-author {
  color: var(--text-light);
  font-style: italic;
  margin-bottom: 5px;
}

.book-condition {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.book-publisher {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.book-price {
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: bold;
  margin-top: auto;
}

.buy-link {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  text-align: center;
  border-radius: 4px;
  font-size: 0.9rem;
}

.buy-link:hover {
  background: #1a252f;
}

#noResults {
  text-align: center;
  padding: 50px;
  font-size: 1.2rem;
}

/* Contact & Newsletter sections */
.contact-section, .newsletter-section {
  margin-top: 60px;
  background: var(--card-bg);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.contact-section h2, .newsletter-section h2 {
  margin-bottom: 10px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
}

.form-group.inline {
  display: flex;
  gap: 10px;
}

.form-group.inline input {
  flex: 1;
}

#formStatus, #newsletterStatus {
  margin-top: 10px;
  font-style: italic;
}

/* Footer */
footer {
  background: var(--primary);
  color: #fff;
  text-align: center;
  padding: 30px 0;
  margin-top: 60px;
}

footer a {
  color: #ddd;
  text-decoration: underline;
}