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

:root {
  --color-bg: #4a2419;
  --color-surface: #5d2d1d;
  --color-border: #7a4030;
  --color-text: #faf7f0;
  --color-text-muted: #c4a28c;
  --color-heading: #faf7f0;
  --color-accent: #c07840;
  --color-accent-hover: #a36232;
  --color-accent-light: #3a1c10;
  --color-price: #faf7f0;
  --font-heading: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-hover: 0 4px 14px rgba(0,0,0,0.45);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: normal;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.site-name:hover {
  color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cart-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 6px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.cart-btn:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

/* ── Main layout ── */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ── Search bar ── */
.search-section {
  margin-bottom: 40px;
}

.search-section h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: normal;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  color: var(--color-heading);
}

.search-bar {
  display: flex;
  gap: 10px;
  max-width: 560px;
}

.search-input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}

.search-input:focus {
  border-color: var(--color-accent);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-btn {
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 10px 20px;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
}

.search-btn:hover {
  background: var(--color-accent-hover);
}

/* ── Results info ── */
.results-info {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  min-height: 20px;
}

.results-info .query {
  color: var(--color-text);
  font-style: italic;
}

/* ── Book grid ── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 28px;
}

.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
}

.book-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.book-cover {
  aspect-ratio: 2/3;
  background: var(--color-border);
  overflow: hidden;
  position: relative;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.book-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: linear-gradient(135deg, #6e3828 0%, #4a2419 100%);
  color: var(--color-text-muted);
}

.book-info {
  padding: 14px 16px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.book-title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  line-height: 1.35;
  font-weight: normal;
  color: var(--color-heading);
}

.book-author {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.book-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding-top: 10px;
}

.book-price {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-price);
}

.condition-badge.condition-card {
  font-size: 0.7rem;
}

/* ── No results ── */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 0;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.no-results p:first-child {
  font-size: 1.125rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

/* ── Book detail page ── */
.book-detail {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: start;
}

/* ── Image gallery ── */
.detail-gallery {
  display: flex;
  flex-direction: column;
}

.gallery-placeholder {
  aspect-ratio: 2/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  background: linear-gradient(135deg, #6e3828 0%, #4a2419 100%);
  border-radius: var(--radius);
}

.gallery-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gallery-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  background: var(--color-border);
}

.gallery-item img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.gallery-more-btn {
  margin-top: 8px;
  width: 100%;
  padding: 8px;
  background: var(--color-accent-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s, color 0.15s;
}

.gallery-more-btn:hover {
  background: var(--color-border);
  color: var(--color-text);
}

/* ── Lightbox ── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 10, 5, 0.88);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.8;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  padding: 12px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.22);
}

/* ── Detail info ── */
.detail-info {
  padding-top: 4px;
}

.detail-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  font-weight: normal;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  color: var(--color-heading);
}

.detail-author {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.detail-meta {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.meta-item {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.meta-item strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.875rem;
  margin-bottom: 1px;
}

/* ── Condition badge ── */
.condition-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.condition-like-new,
.condition-fine,
.condition-very-good,
.condition-good,
.condition-fair,
.condition-poor { }

/* ── Condition notes ── */
.condition-notes {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-border);
  padding: 10px 14px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 28px;
  max-width: 580px;
}

/* ── Detail fields grid ── */
.detail-fields {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px 24px;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--color-accent-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 580px;
}

.detail-description {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 32px;
  max-width: 580px;
}

.purchase-area {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.detail-price {
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-price);
}

.buy-btn {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 28px;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
  display: inline-block;
}

.buy-btn:hover {
  background: var(--color-accent-hover);
}

.out-of-stock {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: #a33;
}

/* ── Related books ── */
.related-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.related-section h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: normal;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
  color: var(--color-heading);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

/* ── Breadcrumb ── */
.breadcrumb {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ── Error / loading states ── */
.state-message {
  padding: 80px 0;
  text-align: center;
  font-family: var(--font-body);
  color: var(--color-text-muted);
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--color-border);
  margin-top: 80px;
  padding: 32px 24px;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ── Cart backdrop ── */
.cart-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(30, 15, 5, 0.45);
  z-index: 200;
}

.cart-backdrop.open {
  display: block;
}

/* ── Cart drawer ── */
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 100vw);
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  z-index: 201;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 32px rgba(30, 15, 5, 0.12);
}

.cart-drawer[hidden] {
  display: none;
}

.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.cart-drawer-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: normal;
}

.cart-close {
  background: none;
  border: none;
  font-size: 1.125rem;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 4px 6px;
  line-height: 1;
  border-radius: var(--radius);
}

.cart-close:hover {
  color: var(--color-text);
  background: var(--color-accent-light);
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 8px 24px;
}

.cart-empty {
  text-align: center;
  padding: 56px 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ── Cart item ── */
.cart-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-img {
  width: 50px;
  height: 75px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  overflow: hidden;
  background: var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cart-item-img-placeholder {
  font-size: 1.25rem;
}

.cart-item-info {
  flex: 1;
  min-width: 0;
}

.cart-item-title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  line-height: 1.3;
  margin-bottom: 3px;
}

.cart-item-author,
.cart-item-year {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.cart-item-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

.cart-item-line-price {
  font-size: 0.9375rem;
  font-weight: 600;
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.8125rem;
  padding: 2px;
  line-height: 1;
}

.cart-item-remove:hover {
  color: var(--color-text);
}

/* ── Cart footer ── */
.cart-drawer-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.cart-subtotal-row,
.cart-shipping-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
  margin-bottom: 16px;
}

.cart-checkout-btn {
  width: 100%;
  text-align: center;
  padding: 14px;
  font-size: 1rem;
}

.cart-checkout-error {
  font-size: 0.8125rem;
  color: #a33;
  margin-top: 10px;
  text-align: center;
}

/* ── Cart count badge ── */
.cart-count {
  background: var(--color-accent);
  color: white;
  font-size: 0.6875rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}

/* ── Success page ── */
.success-page {
  max-width: 480px;
  margin: 80px auto;
  text-align: center;
  padding: 0 24px;
}

.success-icon {
  width: 56px;
  height: 56px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 24px;
}

.success-page h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: normal;
  margin-bottom: 12px;
}

.success-page p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.6;
}

/* ── Author link ── */
.author-link {
  color: var(--color-text-muted);
  text-decoration: none;
}

.author-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.detail-author .author-link {
  color: var(--color-text-muted);
}

/* ── Sold state ── */
.book-cover-wrap {
  position: relative;
}

.sold-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20, 10, 5, 0.62);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sold-stamp {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
  padding: 4px 12px;
  border-radius: 3px;
  opacity: 0.9;
}

.book-card.is-sold .book-title {
  color: var(--color-text-muted);
}

.sold-notice {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: 10px 0;
}

.sold-flag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-bg);
  background: var(--color-text-muted);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}

/* ── Author page ── */
.author-page-header {
  margin-bottom: 40px;
}

.author-page-header h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: normal;
  letter-spacing: -0.01em;
  color: var(--color-heading);
  margin-bottom: 6px;
}

.author-page-header .author-subtitle {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ── Policy pages ── */
.policy-page {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.policy-page h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: normal;
  color: var(--color-heading);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.policy-page .policy-updated {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.policy-page h2 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: normal;
  color: var(--color-heading);
  margin-top: 36px;
  margin-bottom: 10px;
}

.policy-page p,
.policy-page li {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 12px;
}

.policy-page ul {
  padding-left: 20px;
  margin-bottom: 12px;
}

.policy-page a {
  color: var(--color-accent);
  text-decoration: none;
}

.policy-page a:hover {
  text-decoration: underline;
}

/* ── Footer links ── */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 20px;
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.8125rem;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ── Cookie banner ── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  z-index: 300;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.25);
}

.cookie-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.cookie-text a {
  color: var(--color-accent);
  text-decoration: none;
}

.cookie-text a:hover {
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-btn {
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 7px 18px;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: background 0.15s, color 0.15s;
}

.cookie-btn-decline {
  background: none;
  color: var(--color-text-muted);
}

.cookie-btn-decline:hover {
  background: var(--color-accent-light);
  color: var(--color-text);
}

.cookie-btn-accept {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.cookie-btn-accept:hover {
  background: var(--color-accent-hover);
}

/* ── Responsive ── */
@media (max-width: 720px) {
  .book-detail {
    grid-template-columns: 1fr;
  }

  .detail-gallery {
    max-width: 260px;
  }

  .detail-title {
    font-size: 1.5rem;
  }

  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
  }

  .related-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .search-section h1 {
    font-size: 1.375rem;
  }

  .lightbox-prev,
  .lightbox-next {
    padding: 8px 10px;
    font-size: 1.125rem;
  }
}