/* Darul Hidaye — Fatih Ata / author-blog visual language */

:root {
  --primary: #011518;
  --primary-dark: #0f2819;
  --primary-light: #3c757f;
  --accent: #d4af37;
  --accent-hover: #c4a028;
  --accent-soft: rgba(212, 175, 55, 0.14);
  --bg: #ffffff;
  --bg-soft: #f5f7f7;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --ink-muted: #313030;
  --line: #e6e6e6;
  --danger: #b42318;
  --radius: 12px;
  --radius-pill: 50px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --font-serif: "Playfair Display", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max: 1200px;
  --header-h: 4.25rem;
  --ease: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}

main {
  flex: 1;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--primary-light);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

p {
  margin: 0 0 1rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-pill);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.container.narrow {
  width: min(100% - 2.5rem, 40rem);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white, #fff);
  box-shadow: var(--shadow);
  border-bottom: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
  padding: 0.35rem 0;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  line-height: 1.15;
  flex: 1;
  min-width: 0;
  transition: color var(--ease);
}

.brand-with-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-logo {
  display: block;
  width: 3.3rem;
  height: 2.5rem;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand:hover {
  color: var(--primary-dark);
  opacity: 1;
}

.brand-prefix {
  color: var(--accent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  position: relative;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--ease);
}

.site-nav a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--ease);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--primary);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  width: 100%;
}

.cart-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.header-cart {
  position: relative;
  justify-content: center;
  flex: 0 0 auto;
  color: var(--ink);
  text-decoration: none;
}

.header-cart:hover,
.header-cart[aria-current="page"] {
  color: var(--primary);
}

.cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  flex: 0 0 auto;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 1.5px;
  margin-inline: auto;
  background: var(--primary);
  transition: transform var(--ease), opacity var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.875rem 2rem;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: var(--ink);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-ghost:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.book-return-link {
  padding: 0.7rem 1.15rem;
  border-color: transparent;
}

.book-return-link:hover {
  background: transparent;
  border-color: transparent;
  color: var(--primary);
  transform: none;
}

.btn.cart-remove {
  padding: 0.5rem;
  border: 0;
  background: transparent;
  color: inherit;
}

.btn-ghost.cart-remove:hover {
  border: 0;
  background: transparent;
  color: inherit;
  transform: none;
  box-shadow: none;
}

.btn-block {
  width: 100%;
}

/* Books */
.books-section {
  padding: 3rem 0 5rem;
}

.state-box {
  padding: 2.5rem 1.25rem;
  text-align: center;
  color: var(--ink-muted);
  border: none;
  border-radius: var(--radius);
  background: var(--bg-soft);
  box-shadow: var(--shadow);
}

.state-error {
  color: var(--danger);
  background: rgba(180, 35, 24, 0.06);
}

.books-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.category-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  padding: 0;
  background: transparent;
  border: none;
}

.category-title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 3px solid var(--accent);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.category-btn {
  display: block;
  width: 100%;
  padding: 0.55rem 0.15rem;
  border: none;
  border-left: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), padding var(--ease), background var(--ease);
}

.category-btn:hover {
  color: var(--primary);
}

.category-btn.is-active {
  color: var(--primary);
  border-left-color: #000;
  padding-left: 0.65rem;
  font-weight: 600;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.book-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid #e1e1e1;
  border-radius: 1rem;
  overflow: hidden;
  padding: 0.75rem;
  box-shadow: none;
}

.book-cover {
  width: min(100%, 180px);
  aspect-ratio: 2 / 3;
  height: auto;
  margin: 0 auto 0.75rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  overflow: hidden;
  padding: 0.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-cover-link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.book-cover-link:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 3px;
}

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

.book-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 0.5rem;
  gap: 0.4rem;
  text-align: center;
}

.book-category {
  margin: 0;
  color: var(--primary-light);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.book-body h3 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--primary);
}

.book-author {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.book-excerpt {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-excerpt-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.book-excerpt-link:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 3px;
}

.book-title-link {
  color: var(--primary);
  text-decoration: none;
}

.book-title-link:hover {
  color: var(--primary-dark);
}

.book-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 0.85rem;
}

.book-price {
  display: inline-flex;
  align-items: baseline;
  min-width: 0;
  color: var(--primary);
}

.price-value {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.btn-cart {
  padding: 0.7rem 1.15rem;
  white-space: nowrap;
  flex-shrink: 0;
  background: #fff;
  color: var(--ink);
  border-color: transparent;
}

.btn-cart:hover {
  background: #f5f5f5;
  border-color: transparent;
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-cart:disabled {
  opacity: 0.7;
  transform: none;
  box-shadow: none;
}

.btn-icon {
  display: block;
  flex-shrink: 0;
}

.btn-label {
  line-height: 1;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  margin: 0.85rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.book-meta strong {
  color: var(--primary);
  font-weight: 700;
}

.book-actions {
  display: grid;
  gap: 0.55rem;
  margin-top: auto;
  padding-top: 1.25rem;
}

.empty-filter {
  margin: 0;
  padding: 2rem 1rem;
  text-align: center;
  color: var(--ink-muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

/* Pages */
.page-main {
  padding: 3rem 0 5rem;
}

.book-detail {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  gap: 2.5rem 3rem;
  align-items: start;
}

.book-detail-cover {
  aspect-ratio: 3 / 4;
  border: none;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  padding: 1rem;
}

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

.book-detail-info h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
}

.book-detail-author {
  margin: 0 0 1.25rem;
  font-size: 1.1rem;
  color: var(--ink-muted);
}

.book-detail-desc {
  margin: 0 0 1.5rem;
  max-width: 38rem;
  color: var(--ink-muted);
  line-height: 1.8;
}

.book-detail-list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
  max-width: 22rem;
}

.book-detail-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.98rem;
}

.book-detail-list span {
  color: var(--ink-muted);
}

.book-detail-list strong {
  font-weight: 600;
  color: var(--primary);
}

.book-detail-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 22rem;
}

.page-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.page-header h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 4vw, 2.5rem);
}

.page-header p {
  margin: 0 auto;
  max-width: 36rem;
  color: var(--ink-muted);
}

.page-header::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  margin: 1rem auto 0;
  background: var(--accent);
  border-radius: 2px;
}

.prose p {
  color: var(--ink-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.prose p:last-child {
  margin-bottom: 0;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  justify-content: center;
}

/* Footer */
.site-footer {
  border-top: none;
  padding: 2rem 0;
  background: var(--primary-dark);
  color: #fff;
  text-align: center;
}

.footer-inner {
  display: grid;
  gap: 0.65rem;
  justify-items: center;
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.footer-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.4rem;
}

.footer-socials a {
  display: inline-flex;
  color: #fff;
  transition: opacity var(--ease);
}

.footer-socials a:hover {
  opacity: 0.7;
}

.footer-socials svg {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
}

.footer-brand {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.footer-copy {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
}

/* Cart */
.narrow-cart {
  width: min(100% - 2.5rem, 40rem);
  margin-inline: auto;
}

.cart-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 0;
}

.cart-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.cart-item-cover {
  aspect-ratio: 3 / 4;
  border: none;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  padding: 0.25rem;
}

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

.cart-item-info h2 {
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
}

.cart-item-author,
.cart-item-price {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.cart-item-price {
  margin-top: 0.35rem;
  color: var(--primary);
  font-weight: 700;
}

.cart-item-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.cart-item-controls label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.cart-qty {
  width: 4rem;
  padding: 0.45rem 0.5rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color var(--ease);
}

.cart-qty:focus {
  outline: none;
  border-color: var(--primary);
}

.cart-summary {
  display: grid;
  gap: 1rem;
  padding-top: 0.5rem;
}

.cart-clear {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.cart-clear:hover {
  background: transparent;
  color: var(--ink-muted);
}

.cart-clear-row {
  display: flex;
  justify-content: flex-end;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.95rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 1.05rem;
}

.cart-total strong {
  font-size: 1.25rem;
  color: var(--primary);
}

.cart-actions {
  display: grid;
  gap: 0.65rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 560px) {
  .cart-actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .books-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .category-sidebar {
    position: static;
    padding-bottom: 0.5rem;
    border-bottom: 1px var(--line);
  }

  .category-title {
    border-bottom: none;
    padding-bottom: 0;
  }

  .category-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .category-btn {
    width: auto;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    border-left: 1px solid var(--line);
  }

  .category-btn.is-active {
    color: var(--primary);
    border-color: #000;
    padding-left: 0.85rem;
  }

  .books-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .book-detail {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: 2rem;
  }
}

@media (max-width: 700px) {
  .brand {
    font-size: 1.15rem;
  }

  .brand-logo {
    width: 2.65rem;
    height: 2rem;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cart {
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--line);
    border-radius: 8px;
  }

  .header-cart .cart-count {
    position: absolute;
    top: -0.2rem;
    right: -0.2rem;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1rem;
    background: #fff;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.9rem 0.25rem;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .books-grid {
    grid-template-columns: 1fr;
    max-width: 22rem;
    margin-inline: auto;
  }

  .book-cover {
    width: min(100%, 200px);
  }

  .book-footer {
    flex-wrap: nowrap;
  }

  .btn-cart {
    margin-left: 0;
  }

  .book-detail {
    grid-template-columns: 1fr;
  }

  .book-detail-cover {
    max-width: 240px;
    margin-inline: auto;
  }

  .book-detail-actions {
    flex-direction: column-reverse;
  }

  .book-detail-actions .btn {
    width: 100%;
  }

  .page-actions {
    flex-direction: column;
  }

  .page-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .book-card,
  .btn,
  .category-btn,
  .site-nav a::after {
    transition: none !important;
    animation: none !important;
  }

  .book-card:hover,
  .btn-primary:hover,
  .btn-ghost:hover {
    transform: none;
  }
}