/* Basic reset so things look consistent across browsers */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background-color: #f5f3ef;
  color: #2b2b2b;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 25px;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 5px;
}

header p {
  color: #666;
}

/* Search bar */
.search-container {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

#searchInput {
  padding: 10px 14px;
  width: 320px;
  max-width: 80vw;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

#searchBtn {
  padding: 10px 20px;
  background-color: #3a5a40;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

#searchBtn:hover {
  background-color: #2f4a34;
}

/* Filter dropdown */
.filter-container {
  text-align: center;
  margin-bottom: 25px;
}

#sortSelect {
  padding: 5px 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

/* Age gate modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
}

.modal-overlay.hidden {
  display: none;
}

.modal-box {
  background: white;
  padding: 25px;
  border-radius: 10px;
  max-width: 380px;
  width: 90%;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.modal-box h2 {
  margin-bottom: 10px;
}

.modal-box p {
  color: #555;
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.modal-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.modal-buttons button {
  padding: 8px 18px;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
}

#ageYesBtn {
  background-color: #3a5a40;
  color: white;
}

#ageYesBtn:hover {
  background-color: #2f4a34;
}

#ageNoBtn {
  background-color: #e0ddd6;
  color: #333;
}

#ageNoBtn:hover {
  background-color: #cfccc4;
}

/* Category filter buttons */
.category-filter {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.category-btn {
  padding: 6px 16px;
  border: 1px solid #ccc;
  border-radius: 20px;
  background: white;
  cursor: pointer;
  font-size: 0.9rem;
}

.category-btn:hover {
  background: #eee;
}

.category-btn.active {
  background-color: #3a5a40;
  color: white;
  border-color: #3a5a40;
}

.category-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.category-btn:disabled:hover {
  background: white;
}

/* Status messages */
.hidden {
  display: none;
}

#loadingMsg,
#statusMsg {
  text-align: center;
  margin-bottom: 15px;
  color: #555;
}

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.book-card {
  background: white;
  border-radius: 8px;
  padding: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
}

.book-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 10px;
  background-color: #e0ddd6; /* shows while image loads or if missing */
}

.book-card h3 {
  font-size: 0.95rem;
  margin-bottom: 5px;
}

.book-card p {
  font-size: 0.85rem;
  color: #666;
}

footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.85rem;
  color: #888;
}

footer a {
  color: #3a5a40;
}