:root {
  --red: #c91626;
  --dark: #17191d;
  --paper: #ffffff;
  --ink: #252a31;
  --muted: #747c87;
  --line: #e0e4e8;
  --page-width: 794px;
  --page-height: 1123px;
  --page-scale: 1;
  --toolbar-height: 64px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: #111317;
  color: #ffffff;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

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

svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.catalog-app {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: radial-gradient(circle at 50% 45%, #24272d, #111317 65%);
}

.catalog-toolbar {
  position: relative;
  z-index: 60;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 15px;
  height: var(--toolbar-height);
  padding: 0 20px;
  border-bottom: 1px solid #ffffff18;
  background: #17191d;
}

.toolbar-left,
.toolbar-actions,
.toolbar-button,
.catalog-brand {
  display: flex;
  align-items: center;
}

.toolbar-left {
  min-width: 0;
  gap: 11px;
}

.toolbar-actions {
  justify-content: flex-end;
  gap: 8px;
}

.toolbar-button {
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid #ffffff24;
  border-radius: 8px;
  background: #ffffff08;
  color: #ecedf0;
  font-size: 11px;
  font-weight: 700;
}

.toolbar-button:hover {
  background: #ffffff16;
}

.square-button {
  width: 36px;
  padding: 0;
}

.catalog-brand {
  min-width: 0;
  gap: 9px;
}

.brand-logo-frame {
  position: relative;
  display: grid;
  flex: 0 0 36px;
  place-items: center;
  width: 36px;
  height: 36px;
  overflow: hidden;
  border-radius: 8px;
  background: #ffffff;
}

.brand-logo-frame img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  padding: 4px;
  background: #ffffff;
  object-fit: contain;
}

.brand-logo-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--red);
  font-size: 17px;
  font-weight: 800;
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong,
.brand-copy small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-copy strong {
  font-size: 12px;
}

.brand-copy small {
  margin-top: 2px;
  color: #9a9fa8;
  font-size: 10px;
}

.toolbar-center {
  max-width: 360px;
  overflow: hidden;
  color: #a6aab2;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .11em;
  text-align: center;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.contents-drawer {
  position: fixed;
  z-index: 100;
  inset: 0;
  visibility: hidden;
  pointer-events: none;
}

.contents-drawer.open {
  visibility: visible;
  pointer-events: auto;
}

.drawer-backdrop {
  position: absolute;
  inset: 0;
  background: #000a;
  opacity: 0;
  transition: opacity .25s ease;
}

.contents-drawer.open .drawer-backdrop {
  opacity: 1;
}

.drawer-panel {
  position: absolute;
  inset: 0 auto 0 0;
  display: flex;
  flex-direction: column;
  width: min(380px, 92vw);
  transform: translateX(-102%);
  background: #ffffff;
  color: var(--ink);
  box-shadow: 20px 0 55px #0005;
  transition: transform .25s ease;
}

.contents-drawer.open .drawer-panel {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.drawer-eyebrow {
  color: var(--red);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.drawer-header h2 {
  margin: 4px 0 0;
  font-size: 21px;
}

.drawer-close {
  width: 35px;
  height: 35px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  font-size: 22px;
}

.contents-navigation {
  flex: 1;
  overflow-y: auto;
  padding: 15px;
}

.contents-loading {
  color: var(--muted);
  font-size: 12px;
}

.contents-group {
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contents-group-title,
.contents-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  text-align: left;
}

.contents-group-title {
  padding: 11px 12px;
  border: 0;
  background: var(--dark);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
}

.contents-link {
  min-height: 39px;
  padding: 8px 12px;
  border: 0;
  border-top: 1px solid #eceef0;
  background: #ffffff;
  color: #4f5660;
  font-size: 11px;
}

.contents-link:hover,
.contents-link.active {
  background: #fff2f3;
  color: var(--red);
}

.drawer-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
}

/* Katalogun ekranda kullanılabilir alanı */
.catalog-stage {
  position: relative;
  display: grid;
  place-items: center;
  height: calc(100vh - var(--toolbar-height));
  height: calc(100dvh - var(--toolbar-height));
  padding: 14px 74px 62px;
  overflow: hidden;
}

.book-area,
.book-shell {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

.loading-screen,
.catalog-error {
  grid-area: 1 / 1;
  display: grid;
  justify-items: center;
  text-align: center;
}

.loading-mark,
.error-mark {
  display: grid;
  place-items: center;
  width: 55px;
  height: 55px;
  margin-bottom: 14px;
  border-radius: 13px;
  background: var(--red);
  font-size: 23px;
  font-weight: 900;
}

.loading-screen strong,
.catalog-error strong {
  font-size: 15px;
}

.loading-screen > span,
.catalog-error p {
  margin: 6px 0 0;
  color: #9da2ab;
  font-size: 11px;
}

.loading-line {
  width: 185px;
  height: 3px;
  margin-top: 21px;
  overflow: hidden;
  border-radius: 20px;
  background: #ffffff24;
}

.loading-line i {
  display: block;
  width: 45%;
  height: 100%;
  border-radius: inherit;
  background: var(--red);
  animation: loading 1.1s ease-in-out infinite alternate;
}

@keyframes loading {
  to {
    transform: translateX(122%);
  }
}

.retry-button {
  min-height: 36px;
  margin-top: 16px;
  padding: 0 13px;
  border: 0;
  border-radius: 7px;
  background: var(--red);
  color: #ffffff;
  font-weight: 700;
}

.book-shell {
  grid-area: 1 / 1;
}

.catalog-book {
  margin: 0 auto;
  filter: drop-shadow(0 18px 33px #0006);
}

.stf__parent {
  margin: 0 auto !important;
}

.stf__block {
  cursor: grab;
}

.stf__block:active {
  cursor: grabbing;
}

.page-navigation {
  position: absolute;
  z-index: 40;
  top: 50%;
  display: grid;
  place-items: center;
  width: 43px;
  height: 55px;
  transform: translateY(-50%);
  border: 1px solid #ffffff2a;
  border-radius: 9px;
  background: #ffffff12;
  color: #ffffff;
}

.page-navigation:hover:not(:disabled) {
  background: #ffffff25;
}

.page-navigation:disabled,
.control-button:disabled {
  cursor: default;
  opacity: .25;
}

.page-navigation-left {
  left: 16px;
}

.page-navigation-right {
  right: 16px;
}

/* Alt bar: beklerken yarı saydam, üzerine gelince tam görünür */
.catalog-controls {
  position: absolute;
  z-index: 50;
  bottom: 12px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 3px;
  min-height: 42px;
  padding: 4px;
  transform: translateX(-50%);
  border: 1px solid #ffffff26;
  border-radius: 10px;
  background: rgb(32 35 41 / 72%);
  opacity: .62;
  box-shadow: 0 10px 25px #0005;
  backdrop-filter: blur(10px);
  transition: opacity .2s ease, background .2s ease;
}

.catalog-controls:hover,
.catalog-controls:focus-within {
  background: #202329;
  opacity: 1;
}

.control-button {
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #ffffff;
}

.control-button:hover:not(:disabled) {
  background: #ffffff1c;
}

.control-button svg {
  width: 17px;
  height: 17px;
}

.page-counter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 70px;
  font-size: 11px;
  font-weight: 800;
}

.page-counter i {
  color: #858b94;
  font-style: normal;
}

.control-divider {
  width: 1px;
  height: 18px;
  margin: 0 3px;
  background: #ffffff25;
}

.interaction-hint {
  position: absolute;
  right: 15px;
  bottom: 15px;
  color: #8f949e;
  font-size: 9px;
}

.noscript-message {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 30px;
  background: #17191d;
  text-align: center;
}

/*
 * StPageFlip dış sayfayı ekran ölçüsünde çizer.
 * İçerik 794 × 1123 A4 koordinatlarında hazırlanır
 * ve JS'nin hesapladığı --page-scale oranıyla küçülür.
 */
.catalog-page {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
  user-select: none;
}

.page-surface {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  width: var(--page-width);
  height: var(--page-height);
  overflow: hidden;
  transform: scale(var(--page-scale));
  transform-origin: top left;
  background: var(--paper);
}

/*
 * Cilt gölgesi yalnızca karşılıklı sayfaların iç kenarında.
 * data-spread-side değerlerini sıradaki catalog.js düzenlemesi ekleyecek.
 * pointer-events:none sayfa sürükleme hareketini engellemez.
 */
.catalog-page[data-spread-side="left"] .page-surface::after,
.catalog-page[data-spread-side="right"] .page-surface::after {
  position: absolute;
  z-index: 5;
  top: 0;
  bottom: 0;
  width: 30px;
  pointer-events: none;
  content: "";
}

.catalog-page[data-spread-side="left"] .page-surface::after {
  right: 0;
  background: linear-gradient(
    to left,
    rgb(25 29 34 / 16%),
    rgb(25 29 34 / 5%) 35%,
    transparent
  );
}

.catalog-page[data-spread-side="right"] .page-surface::after {
  left: 0;
  background: linear-gradient(
    to right,
    rgb(25 29 34 / 16%),
    rgb(25 29 34 / 5%) 35%,
    transparent
  );
}

.page-inner {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  padding: 32px 43px 25px;
}

.page-header {
  display: flex;
  flex: 0 0 48px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 15px;
  min-height: 48px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-header-category strong,
.page-header-category span {
  display: block;
}

.page-header-category strong {
  color: var(--red);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.page-header-category span {
  margin-top: 3px;
  color: #848b94;
  font-size: 10px;
}

.page-header-brand {
  color: #727a85;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.product-page-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  padding-top: 24px;
}

/*
 * Görsel sola yaslanır. Açıklama önce görselin yanında,
 * görselin boyu bitince sayfanın tam genişliğinde akar.
 */
.product-introduction {
  display: flow-root;
}

.product-image-frame {
  display: grid;
  float: left;
  place-items: center;
  width: calc(50% - 13.5px);
  height: 330px;
  margin: 0 27px 12px 0;
  overflow: hidden;
  border: 1px solid #e5e7ea;
  border-radius: 4px;
  background: #f6f7f8;
}

.product-image-frame img {
  width: 100%;
  height: 100%;
  padding: 14px;
  object-fit: contain;
}

.image-placeholder {
  display: grid;
  justify-items: center;
  gap: 7px;
  padding: 18px;
  color: #89919b;
  font-size: 11px;
  text-align: center;
}

.image-placeholder strong {
  color: #5d6570;
  font-size: 12px;
}

.product-copy {
  min-width: 0;
}

.product-code {
  display: block;
  margin-bottom: 9px;
  color: var(--red);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.product-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: -.035em;
}

.product-series {
  margin: 10px 0 0;
  color: #848b94;
  font-size: 10px;
  font-weight: 700;
}

.product-description {
  color: #545c66;
  font-size: 12px;
  line-height: 1.58;
}

.product-description {
  margin-top: 13px;
}

.product-description p {
  margin: 0 0 9px;
}

.technical-section {
  margin-top: 17px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: #333942;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.section-label::before {
  width: 17px;
  height: 2px;
  background: var(--red);
  content: "";
}

.technical-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 11px;
}

.technical-table th,
.technical-table td {
  padding: 5px 10px;
  border-bottom: 1px solid var(--line);
  line-height: 1.35;
  text-align: left;
  vertical-align: top;
}

.technical-table tr:nth-child(odd) {
  background: #f7f8f9;
}

.technical-table th {
  width: 34%;
  border-right: 1px solid #e4e8ec;
  color: #66707a;
  font-weight: 700;
}

.technical-table td {
  overflow-wrap: anywhere;
  color: #242a32;
  font-weight: 650;
}

.page-footer {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 43px;
  margin-top: auto;
  padding-top: 7px;
  border-top: 1px solid var(--line);
}

.application-areas,
.page-footer-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
}

.application-areas-label {
  width: 100%;
  color: #838a93;
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.application-tag {
  padding: 3px 6px;
  border-radius: 4px;
  background: #f0f2f4;
  color: #535b65;
  font-size: 9px;
}

.page-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: #333942;
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.page-action.primary {
  border-color: var(--red);
  background: var(--red);
  color: #ffffff;
}

.page-number {
  display: block;
  align-self: flex-end;
  margin-top: 6px;
  color: #9aa1aa;
  font-size: 10px;
  font-weight: 700;
}

/* Dış kapak ve arka kapak */
.cover-page .page-surface,
.back-cover .page-surface {
  background: #191c21;
  color: #ffffff;
}

.cover-background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, #17191ded, #17191d99 58%, #a31524cc);
}

.cover-content {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 55px 52px 42px;
}

.cover-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 800;
}

.cover-brand img {
  max-width: 155px;
  max-height: 55px;
  padding: 8px;
  border-radius: 5px;
  background: #ffffff;
  object-fit: contain;
}

.cover-brand-fallback {
  font-size: 18px;
}

.cover-copy {
  margin: auto 0;
}

.cover-kicker {
  color: #ff6f78;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.cover-title {
  max-width: 630px;
  margin: 18px 0;
  font-size: 54px;
  line-height: 1.05;
  letter-spacing: -.045em;
}

.cover-subtitle {
  font-size: 17px;
}

.cover-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  border-top: 1px solid #ffffff55;
  font-size: 11px;
}

/*
 * Beyaz iç kapak / tanıtım sayfası.
 * Görsel hazır olduğunda:
 * assets/images/pages/intro-background.jpg
 * dosyasına koyman yeterli. Beyaz katman yazıyı okunur tutar.
 */
.intro-page .page-surface {
  background-color: #ffffff;
  background-image:
    linear-gradient(
      90deg,
      rgb(255 255 255 / 94%) 0%,
      rgb(255 255 255 / 88%) 52%,
      rgb(255 255 255 / 82%) 100%
    ),
    url("../images/pages/intro-background.jpg");
  background-position: center, center;
  background-repeat: no-repeat;
  background-size: cover;
}

.intro-page .page-inner {
  padding: 90px 65px 35px;
}

.intro-mark {
  width: 34px;
  height: 4px;
  margin-bottom: 25px;
  background: var(--red);
}

.intro-page h2 {
  max-width: 580px;
  margin: 0;
  font-size: 40px;
  line-height: 1.12;
}

.intro-description {
  max-width: 580px;
  margin-top: 27px;
  color: #626a74;
  font-size: 15px;
  line-height: 1.75;
}

.intro-description p {
  margin: 0 0 14px;
}

.intro-details {
  display: grid;
  gap: 14px;
  margin-top: auto;
  padding-bottom: 30px;
}

.intro-detail {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.intro-detail strong {
  color: var(--red);
}

/* Bölüm geçiş sayfaları */
.category-cover .page-surface {
  background: #20242a;
  color: #ffffff;
}

.category-cover-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: 70px 65px;
}

.category-index {
  color: #ff6671;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.category-cover h2 {
  max-width: 650px;
  margin: 17px 0;
  font-size: 55px;
  line-height: 1.05;
}

.category-cover p {
  max-width: 510px;
  color: #b9bec6;
  font-size: 16px;
  line-height: 1.6;
}

.category-cover .page-number {
  position: absolute;
  right: 42px;
  bottom: 28px;
}

/* Arka kapak */
.back-cover-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: 65px;
}

.back-cover-brand {
  color: #ff6f78;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.back-cover h2 {
  max-width: 580px;
  margin: 22px 0 35px;
  font-size: 42px;
  line-height: 1.12;
}

.back-cover-contact {
  display: grid;
  gap: 15px;
}

.contact-item {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid #ffffff36;
  font-size: 13px;
}

.contact-item strong {
  color: #aab0b8;
  font-size: 10px;
  text-transform: uppercase;
}

.contact-item span,
.contact-item a {
  overflow-wrap: anywhere;
}

/* Tam ekranda üst çubuk kalkar, A4'e daha fazla yer açılır */
.catalog-app:fullscreen .catalog-toolbar {
  display: none;
}

.catalog-app:fullscreen .catalog-stage {
  height: 100vh;
  height: 100dvh;
  padding-top: 12px;
  padding-bottom: 60px;
}

@media (max-width: 760px) {
  :root {
    --toolbar-height: 58px;
  }

  .catalog-toolbar {
    grid-template-columns: 1fr auto;
    padding: 0 12px;
  }

  .toolbar-center,
  .website-button,
  .interaction-hint {
    display: none;
  }

  .toolbar-left {
    gap: 8px;
  }

  .contents-button {
    width: 35px;
    padding: 0;
  }

  .contents-button span {
    display: none;
  }

  .toolbar-actions {
    gap: 5px;
  }

  .toolbar-button.square-button {
    width: 34px;
    min-height: 34px;
  }

  .catalog-stage {
    padding: 10px 8px 66px;
  }

  .page-navigation {
    top: auto;
    bottom: 14px;
    width: 35px;
    height: 35px;
    transform: none;
  }

  .page-navigation-left {
    left: 10px;
  }

  .page-navigation-right {
    right: 10px;
  }

  .catalog-controls {
    bottom: 11px;
  }

  /* Dokunmatik ekranda hover olmadığı için bar okunaklı kalır */
  @media (hover: none) {
    .catalog-controls {
      background: #202329;
      opacity: 1;
    }
  }
}

@media (max-width: 380px) {
  .brand-copy small {
    display: none;
  }

  .brand-copy strong {
    font-size: 11px;
  }

  .catalog-controls {
    gap: 0;
  }

  .page-counter {
    min-width: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .loading-line i {
    animation-duration: 2.5s;
  }

  .drawer-backdrop,
  .drawer-panel,
  .catalog-controls {
    transition-duration: .01ms;
  }
}
.intro-page .page-inner {
  position: relative;
  z-index: 2;
}

/* =========================================================
   ÜRÜN SAYFASI SON DÜZENİ
   - Teknik özellikler Excel tablosu düzeninde
   - Her blokta 4 başlık ve altında 4 değer
   - Ana görsel altında iki kurumsal işaret
   ========================================================= */

/* Ana görsel ile kurumsal işaretleri tek bir sol sütunda tutar */
.product-visual-column {
  float: left;
  width: calc(50% - 13.5px);
  margin: 0 27px 12px 0;
}

.product-visual-column .product-image-frame {
  display: flex;
  float: none;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 292px;
  margin: 0;
}

.product-visual-column .product-image-frame img {
  display: block;
  width: 100%;
  height: 100%;
  margin: auto;
  object-fit: contain;
  object-position: center center;
}

.product-origin-badges {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  min-height: 32px;
  margin-top: 7px;
  padding: 4px 7px;
  border: 1px solid #e5e7ea;
  border-radius: 3px;
  background: #f6f7f8;
}

.product-origin-badges img {
  display: block;
  width: auto;
  max-width: 98px;
  height: 25px;
  object-fit: contain;
  object-position: center;
  mix-blend-mode: multiply;
}

.product-origin-badges img:first-child {
  max-width: 92px;
}

/* Açıklamaları daha okunaklı ve koyu gösterir */
.product-description {
  color: #3f4650;
}

/* Teknik tablolar arasındaki kontrollü boşluk */
.technical-section-primary {
  flex: 0 0 auto;
  margin-top: 14px;
}

.technical-section-primary .section-label {
  margin-bottom: 7px;
}

.technical-matrix-list {
  display: grid;
  gap: 6px;
  width: 100%;
}

/* Gerçek Excel mantığı: başlıklar üst satırda, değerler altında */
.technical-table.technical-matrix {
  width: 100%;
  overflow: hidden;
  border: 1px solid #dfe3e7;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 3px;
  table-layout: fixed;
}

.technical-table.technical-matrix th,
.technical-table.technical-matrix td {
  width: auto;
  height: auto;
  padding: 5px 7px;
  border: 0;
  border-right: 1px solid #dfe3e7;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
  text-align: left;
  vertical-align: top;
}

.technical-table.technical-matrix th:last-child,
.technical-table.technical-matrix td:last-child {
  border-right: 0;
}

.technical-table.technical-matrix thead th {
  border-bottom: 1px solid #dfe3e7;
  background: #eef1f4;
  color: #464e58;
  font-size: 8px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .025em;
  text-transform: uppercase;
}

.technical-table.technical-matrix tbody tr,
.technical-table.technical-matrix tbody tr:nth-child(odd) {
  background: #fafbfc;
}

.technical-table.technical-matrix tbody td {
  background: #fafbfc;
  color: #20252c;
  font-size: 9px;
  font-weight: 700;
  line-height: 1.3;
}

/* Kullanım alanlarının tamamı görünür ve gerektiğinde sarılır */
.application-areas {
  align-content: center;
  max-width: 72%;
}

.application-tag {
  padding: 3px 5px;
  color: #454c55;
  font-size: 8px;
}

/* Üç işareti ana ürün görselinin altında zeminsiz gösterir */
.product-origin-badges {
  justify-content: center;
  flex-wrap: nowrap;
  gap: 10px;
  min-height: 29px;
  margin-top: 6px;
  padding: 2px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.product-origin-badges img,
.product-origin-badges img:first-child {
  flex: 0 1 auto;
  width: auto;
  max-width: 88px;
  height: 24px;
  background: transparent;
  object-fit: contain;
  object-position: center;
  mix-blend-mode: multiply;
}

/* Mobilde A4 sayfa ölçeklenirken üç logo ve akış bozulmaz */
@media (max-width: 760px) {
  .product-origin-badges {
    gap: 7px;
  }

  .product-origin-badges img,
  .product-origin-badges img:first-child {
    max-width: 82px;
    height: 23px;
  }
}

/* =========================================================
   SADE YAKINLAŞTIRMA SİSTEMİ
   - Normal görünüm: %100
   - Yakın görünüm: %125
   - Kaydırma çalışır ancak çubuklar görünmez
   ========================================================= */

/* Normal kullanımda PageFlip taşmaları ve scrollbar tamamen kapalıdır */
.book-area {
  overflow: hidden;
}

/*
 * JS yalnızca %125 yakınlaştırmada bu sınıfı HTML öğesine ekler.
 * Sayfa fare tekerleği, touchpad veya dokunmayla gezilebilir;
 * sağ ve alt kaydırma çubukları görünmez.
 */
.catalog-is-zoomed .book-area {
  align-items: safe center;
  justify-items: safe center;
  overflow: auto;
  overscroll-behavior: contain;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.catalog-is-zoomed .book-area::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.catalog-is-zoomed .book-shell {
  width: max-content;
  height: max-content;
  min-width: 100%;
  min-height: 100%;
}

/* Büyüteç eksi, yüzde göstergesi ve büyüteç artı */
.zoom-controls {
  display: flex;
  align-items: center;
  gap: 2px;
}

.zoom-button svg circle,
.zoom-button svg path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.zoom-level {
  display: grid;
  place-items: center;
  min-width: 48px;
  height: 30px;
  padding: 0 6px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #ffffff;
  font: inherit;
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
}

.zoom-level:hover:not(:disabled),
.zoom-level:focus-visible {
  background: #ffffff1c;
}

.zoom-level:disabled {
  cursor: default;
  color: #d6d9de;
}

.zoom-level:focus-visible,
.zoom-button:focus-visible {
  outline: 2px solid #ffffffb8;
  outline-offset: -2px;
}

.catalog-controls,
.page-navigation {
  touch-action: manipulation;
}

/* Mobilde genişleyen alt barı tek sırada ve okunaklı tutar */
@media (max-width: 760px) {
  .catalog-controls {
    max-width: calc(100vw - 16px);
    gap: 1px;
    padding: 3px;
  }

  .page-navigation {
    bottom: 58px;
  }

  .catalog-controls .control-button {
    width: 30px;
    height: 32px;
  }

  .catalog-controls .control-button svg {
    width: 15px;
    height: 15px;
  }

  .catalog-controls .page-counter {
    min-width: 54px;
    gap: 4px;
  }

  .catalog-controls .control-divider {
    margin: 0 1px;
  }

  .zoom-controls {
    gap: 0;
  }

  .zoom-level {
    min-width: 42px;
    padding: 0 3px;
    font-size: 9px;
  }
}

@media (max-width: 380px) {
  .catalog-controls {
    max-width: calc(100vw - 12px);
  }

  .catalog-controls .control-button {
    width: 28px;
  }

  .catalog-controls .page-counter {
    min-width: 49px;
  }

  .zoom-level {
    min-width: 39px;
  }
}
/* =========================================================
   DIŞ ARKA KAPAK TASARIMI
   ========================================================= */

.closing-cover-page,
.closing-cover-page .page-surface {
  background: #171a1f;
}

.closing-cover-surface {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  color: #ffffff;
  isolation: isolate;
}

/* Sağ taraftaki kırmızı kurumsal vurgu */
.closing-cover-accent {
  position: absolute;
  z-index: 0;
  top: -170px;
  right: -210px;
  width: 540px;
  height: 780px;
  background:
    linear-gradient(
      145deg,
      rgba(213, 20, 36, 0.96) 0%,
      rgba(177, 12, 27, 0.72) 44%,
      rgba(177, 12, 27, 0) 75%
    );
  transform: rotate(12deg);
  pointer-events: none;
}

/* İnce dekoratif çizgiler */
.closing-cover-surface::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  right: 92px;
  width: 1px;
  height: 100%;
  background:
    linear-gradient(
      to bottom,
      transparent 0%,
      rgba(255, 255, 255, 0.15) 22%,
      rgba(255, 255, 255, 0.15) 78%,
      transparent 100%
    );
}

.closing-cover-surface::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: -180px;
  bottom: -250px;
  width: 640px;
  height: 640px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  box-shadow:
    0 0 0 70px rgba(255, 255, 255, 0.018),
    0 0 0 140px rgba(255, 255, 255, 0.012);
  pointer-events: none;
}

.closing-cover-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 72px 68px 58px;
}

/* Üst logo */
.closing-cover-logo {
  display: flex;
  align-items: center;
  gap: 15px;
  min-height: 54px;
}

.closing-cover-logo img {
  display: block;
  width: auto;
  max-width: 128px;
  height: 46px;
  object-fit: contain;
  object-position: left center;
  padding: 6px 9px;
  border-radius: 6px;
  background: #ffffff;
}

.closing-cover-logo span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Orta başlık alanı */
.closing-cover-message {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  width: 82%;
  padding-bottom: 25px;
}

.closing-cover-eyebrow {
  display: block;
  margin-bottom: 24px;
  color: #ee3444;
  font-size: 11px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.closing-cover-message h2 {
  max-width: 590px;
  margin: 0;
  color: #ffffff;
  font-size: 54px;
  font-weight: 850;
  line-height: 0.99;
  letter-spacing: -0.045em;
}

.closing-cover-line {
  width: 58px;
  height: 4px;
  margin: 31px 0 21px;
  border-radius: 999px;
  background: #d91425;
}

.closing-cover-message p {
  max-width: 510px;
  margin: 0;
  color: rgba(255, 255, 255, 0.63);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.8;
  letter-spacing: 0.025em;
}

.closing-cover-message p i {
  display: inline-block;
  margin: 0 6px;
  color: #d91425;
  font-style: normal;
}

/* Alt web sitesi ve yıl */
.closing-cover-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  width: 100%;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.closing-cover-footer strong {
  color: #ffffff;
  font-size: 13px;
  font-weight: 750;
  line-height: 1;
  letter-spacing: 0.035em;
}

.closing-cover-footer span {
  color: rgba(255, 255, 255, 0.46);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.14em;
}

/* Sayfa çevrilirken arka kapak gölgesinin düzgün kalması */
.closing-cover-page[data-density="hard"] {
  background: #171a1f;
}

.closing-cover-page[data-density="hard"] .page-surface {
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Küçük ekranlarda katalog zaten oransal küçülür.
   Bu bölüm çok dar mobil ekranlarda metni dengeler. */
@media (max-width: 480px) {
  .closing-cover-message h2 {
    font-size: 50px;
  }

  .closing-cover-message {
    width: 86%;
  }
}

/* =========================================================
   TAM SAYFA KATALOG / HERO GÖRSELLERİ
   ========================================================= */

.full-page-image-page,
.full-page-image-page .page-surface {
  background: #111419;
}

.full-page-image-surface {
  position: relative;
  display: block;
  width: var(--page-width);
  height: var(--page-height);
  overflow: hidden;
}

.full-page-image {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  object-fit: cover;
  object-position: center center;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.full-page-image[hidden],
.full-page-image-placeholder[hidden] {
  display: none;
}

/* Görsel yüklenemezse temiz bir uyarı alanı gösterilir. */
.full-page-image-placeholder {
  position: absolute;
  z-index: 2;
  inset: 0;
  align-content: center;
  justify-items: center;
  width: 100%;
  height: 100%;
  padding: 70px;
  background: #f4f5f6;
  color: #757d87;
}

.full-page-image-placeholder strong {
  color: #22262c;
  font-size: 22px;
}

.full-page-image-placeholder span {
  max-width: 430px;
  font-size: 13px;
  line-height: 1.6;
}

/* Sayfa numarası fotoğraf üzerinde her renkte okunur. */
.full-page-image-page .page-number {
  position: absolute;
  z-index: 4;
  right: 22px;
  bottom: 20px;
  display: grid;
  place-items: center;
  min-width: 31px;
  height: 24px;
  margin: 0;
  padding: 0 8px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(15, 17, 21, 0.62);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  color: #ffffff;
  font-size: 9px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.08em;
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
}

/* Sol sayfada numara dış köşeye geçer. */
.full-page-image-page[data-spread-side="left"] .page-number {
  right: auto;
  left: 22px;
}

/* Cilt tarafındaki hafif gölge hero görselinde de korunur. */
.full-page-image-page[data-spread-side="left"]
  .full-page-image-surface::after,
.full-page-image-page[data-spread-side="right"]
  .full-page-image-surface::after {
  z-index: 3;
}

/* Mobilde bütün A4 yüzey zaten --page-scale ile orantılı küçülür. */
@media (max-width: 480px) {
  .full-page-image-page .page-number {
    right: 18px;
    bottom: 17px;
  }

  .full-page-image-page[data-spread-side="left"] .page-number {
    right: auto;
    left: 18px;
  }
}

/* =========================================================
   ÜRÜN SAYFASI İNGİLİZCE ALT BÖLÜMÜ
   - Yalnızca İngilizce veri girilmiş ürünlerde görünür
   - Üstteki ürün yapısını A4'ün alt yarısına kompakt taşır
   - Teknik özellikler yine 4 + 4 Excel düzenindedir
   ========================================================= */

.product-english-section {
  flex: 0 0 auto;
  min-width: 0;
  margin-top: 18px;
  padding-top: 13px;
  border-top: 1px solid #d8dde2;
}

.product-language-heading {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 10px;
  color: #2e343c;
  font-size: 9px;
  font-weight: 850;
  line-height: 1;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.product-language-heading::after {
  flex: 1;
  height: 1px;
  background: #e3e6e9;
  content: "";
}

.product-language-flag {
  display: block;
  flex: 0 0 auto;
  width: 22px;
  height: 14px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgb(0 0 0 / 9%);
  background: transparent;
  object-fit: cover;
  object-position: center;
}

.product-introduction-english {
  display: block;
  width: 100%;
}

.product-introduction-english .product-copy {
  width: 100%;
  margin: 0;
}

.product-introduction-english .product-code {
  margin-bottom: 5px;
  font-size: 8px;
}

.product-introduction-english .product-title {
  max-width: 100%;
  font-size: 22px;
  line-height: 1.08;
  letter-spacing: -.025em;
}

.product-introduction-english .product-series {
  margin-top: 6px;
  color: #69717b;
  font-size: 8px;
}

.product-description-english {
  margin-top: 8px;
  color: #373e47;
  font-size: 9.5px;
  line-height: 1.46;
}

.product-description-english p {
  margin-bottom: 6px;
}

.technical-section-english {
  clear: both;
  margin-top: 9px;
}

.technical-section-english .section-label {
  margin-bottom: 6px;
  font-size: 8px;
}

.technical-section-english .section-label::before {
  width: 14px;
}

.technical-section-english .technical-matrix-list {
  gap: 4px;
}

.technical-section-english
  .technical-table.technical-matrix th,
.technical-section-english
  .technical-table.technical-matrix td {
  padding: 4px 6px;
}

.technical-section-english
  .technical-table.technical-matrix thead th {
  font-size: 7px;
  line-height: 1.18;
}

.technical-section-english
  .technical-table.technical-matrix tbody td {
  font-size: 8px;
  line-height: 1.22;
}

.application-areas-english {
  clear: both;
  align-content: center;
  max-width: 100%;
  margin-top: 8px;
  gap: 4px;
}

.application-areas-english .application-areas-label {
  color: #6d7580;
  font-size: 7px;
}

.application-areas-english .application-tag {
  padding: 2px 5px;
  background: #f1f3f5;
  color: #3f4650;
  font-size: 7px;
}

/* Katalog mobilde A4 yüzeyi orantılı küçülttüğü için alt bölümün
   masaüstü yerleşimi korunur; dokunmatik ekranda taşma oluşturmaz. */
@media (max-width: 760px) {
  .product-english-section {
    margin-top: 16px;
    padding-top: 11px;
  }

  .product-language-heading {
    margin-bottom: 8px;
  }
}