/* Kitabkiro storefront components — values from design static HTML / CMP specs.
   Use --kb-* tokens only (no new colour literals except where design has no token). */

/* ── CMP-001 Utility bar ─────────────────────────────────────────── */
.kb-utility-bar {
  background: var(--kb-brand-navy-900);
  color: var(--kb-text-on-dark);
  font-size: var(--kb-fs-14);
}

.kb-utility-bar__inner {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-8) var(--kb-gutter);
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-6) var(--kb-space-24);
  justify-content: space-between;
  align-items: center;
}

.kb-utility-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-6) 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.kb-utility-bar__links a {
  color: var(--kb-text-on-dark);
  text-decoration: none;
}

.kb-utility-bar__links a:hover {
  color: var(--kb-brand-green-700);
}

/* ── CMP-002 Site header ─────────────────────────────────────────── */
.kb-site-header {
  background: var(--kb-surface-card);
  border-bottom: 1px solid var(--kb-border-default);
}

.kb-site-header__row {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: 18px var(--kb-gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-16) var(--kb-space-32);
}

.kb-logo {
  display: flex;
  align-items: center;
  flex: none;
  text-decoration: none;
  color: var(--kb-brand-navy-900);
}

.kb-logo__img {
  display: block;
  height: 52px;
  width: auto;
  max-width: min(200px, 42vw);
  object-fit: contain;
}

.kb-cart-btn {
  display: flex;
  align-items: center;
  gap: var(--kb-space-10);
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-semibold);
  min-height: var(--kb-touch);
  cursor: pointer;
}

.kb-cart-btn__icon {
  position: relative;
  display: grid;
  place-items: center;
  width: var(--kb-touch);
  height: var(--kb-touch);
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-sand);
  color: var(--kb-brand-navy-900);
}

.kb-cart-btn__badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 20px;
  height: 20px;
  padding: 0 4px;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  font-size: var(--kb-fs-12);
  font-weight: var(--kb-weight-bold);
  display: grid;
  place-items: center;
  line-height: 1;
  box-sizing: border-box;
}

/* ── CMP-006 Search form ─────────────────────────────────────────── */
.kb-search {
  flex: 1 1 360px;
  display: flex;
  align-items: center;
  background: var(--kb-surface-sand);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-pill);
  padding: 4px 4px 4px 20px;
  margin: 0;
  position: relative;
}

.kb-search__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: var(--kb-fs-16);
  color: var(--kb-brand-navy-900);
  outline: none;
}

.kb-search:focus-within {
  outline: 2px solid var(--kb-brand-navy-900);
  outline-offset: 2px;
}

.kb-search__input::placeholder {
  color: var(--kb-text-muted);
}

.kb-search__submit {
  width: var(--kb-touch);
  height: var(--kb-touch);
  border-radius: var(--kb-radius-pill);
  border: 0;
  background: var(--kb-brand-navy-900);
  color: #FFFFFF;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex: none;
}

.kb-search__submit:hover {
  background: var(--kb-brand-navy-950);
}

/* ── CMP-003 Category nav ────────────────────────────────────────── */
.kb-category-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-top: 1px solid var(--kb-border-divider);
  background: var(--kb-surface-card);
  box-shadow: var(--kb-shadow-card-hover);
}

.kb-category-nav__list {
  list-style: none;
  margin: 0 auto;
  max-width: var(--kb-container);
  padding: 0 var(--kb-gutter);
  display: flex;
  flex-wrap: wrap;
  gap: 0 30px;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-16);
}

.kb-category-nav__item {
  position: relative;
}

.kb-category-nav__link {
  display: flex;
  align-items: center;
  gap: var(--kb-space-6);
  padding: 13px 0;
  text-decoration: none;
  color: var(--kb-brand-navy-900);
  transition: color var(--kb-ease-hover);
}

.kb-category-nav__link:hover,
.kb-category-nav__item.is-open > .kb-category-nav__link {
  color: var(--kb-brand-green-700);
}

.kb-category-nav__link[aria-current='page'] {
  color: var(--kb-brand-green-700);
  box-shadow: inset 0 -3px 0 var(--kb-brand-green-700);
}

.kb-category-nav__caret {
  display: block;
  flex: none;
  opacity: 0.65;
  transition: transform var(--kb-ease-hover), opacity var(--kb-ease-hover);
}

.kb-category-nav__item.is-open .kb-category-nav__caret,
.kb-category-nav__link:hover .kb-category-nav__caret {
  opacity: 1;
}

.kb-category-nav__item.is-open .kb-category-nav__caret {
  transform: rotate(180deg);
}

.kb-category-nav__panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 110;
  min-width: 240px;
  width: max-content;
  max-width: min(300px, calc(100vw - 32px));
  padding: var(--kb-space-8);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-2xl);
  box-shadow: var(--kb-shadow-drawer);
  transform-origin: top left;
}

.kb-category-nav__panel[hidden] {
  display: none;
}

.kb-category-nav__item.is-open .kb-category-nav__panel:not([hidden]) {
  animation: kb-nav-panel-in var(--kb-ease-book);
}

@keyframes kb-nav-panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.kb-category-nav__dropdown {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.kb-category-nav__dropdown-link {
  display: block;
  padding: 10px 14px;
  border-radius: var(--kb-radius-lg);
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-15);
  line-height: var(--kb-lh-title);
  text-decoration: none;
  transition: background var(--kb-ease-hover), color var(--kb-ease-hover);
}

.kb-category-nav__dropdown-link:hover,
.kb-category-nav__dropdown-link:focus-visible {
  background: var(--kb-surface-sand);
  color: var(--kb-brand-green-700);
  outline: none;
}

.kb-category-nav__list-all {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kb-space-8);
  margin-top: var(--kb-space-6);
  padding: 10px 14px;
  border-top: 1px solid var(--kb-border-divider);
  border-radius: 0 0 var(--kb-radius-xl) var(--kb-radius-xl);
  color: var(--kb-brand-green-700);
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-14);
  text-decoration: none;
  transition: background var(--kb-ease-hover), color var(--kb-ease-hover);
}

.kb-category-nav__list-all:hover,
.kb-category-nav__list-all:focus-visible {
  background: var(--kb-brand-green-50);
  color: var(--kb-brand-green-900);
  outline: none;
}

.kb-category-nav__list-all svg {
  flex: none;
}

@media (prefers-reduced-motion: reduce) {
  .kb-category-nav__item.is-open .kb-category-nav__panel:not([hidden]) {
    animation: none;
  }

  .kb-category-nav__caret,
  .kb-category-nav__link,
  .kb-category-nav__dropdown-link,
  .kb-category-nav__list-all {
    transition: none;
  }
}

/* ── CMP-016 Footer (full) ───────────────────────────────────────── */
.kb-footer {
  background: var(--kb-brand-navy-950);
  color: var(--kb-text-on-dark-muted);
}

.kb-footer__inner {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-56) var(--kb-gutter) var(--kb-space-32);
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-40);
}

.kb-footer__brand {
  flex: 2 1 260px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kb-footer__wordmark {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-30);
  color: #FFFFFF;
  line-height: var(--kb-lh-tight);
}

.kb-footer__tagline {
  margin: 0;
  line-height: var(--kb-lh-body);
  max-width: 300px;
}

.kb-footer__col {
  flex: 1 1 150px;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-10);
}

.kb-footer__col--contact {
  flex: 1 1 220px;
}

.kb-footer__heading {
  margin: 0 0 var(--kb-space-4);
  font-size: var(--kb-fs-15);
  color: #FFFFFF;
  font-weight: var(--kb-weight-semibold);
}

.kb-footer__col a {
  color: var(--kb-text-on-dark-muted);
  text-decoration: none;
}

.kb-footer__col a:hover {
  color: var(--kb-brand-green-700);
}

.kb-footer__bottom {
  border-top: 1px solid var(--kb-footer-divider);
}

.kb-footer__bottom-inner {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: 18px var(--kb-gutter);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-on-dark-subtle);
}

/* Layout shell */
.kb-root {
  font-family: var(--kb-font-body);
  color: var(--kb-text-default);
  background: var(--kb-surface-page);
  min-height: 100vh;
}

/* ── Shared icon buttons ─────────────────────────────────────────── */
.kb-icon-btn {
  width: var(--kb-touch);
  height: var(--kb-touch);
  border-radius: var(--kb-radius-pill);
  display: grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
  flex: none;
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  line-height: 1;
}

.kb-icon-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.kb-icon-btn--light {
  border: 1px solid var(--kb-border-default);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
}

.kb-icon-btn--dark {
  border: 0;
  background: var(--kb-brand-navy-900);
  color: #FFFFFF;
}

/* ── CMP-008 Ribbon ──────────────────────────────────────────────── */
.kb-ribbon {
  position: absolute;
  top: 14px;
  left: -6px;
  font-size: var(--kb-fs-12);
  font-weight: var(--kb-weight-bold);
  padding: 3px 10px 3px 9px;
  border-radius: 0 var(--kb-radius-sm) var(--kb-radius-sm) 0;
  box-shadow: var(--kb-shadow-ribbon);
  z-index: 2;
}

.kb-ribbon--new {
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
}

.kb-ribbon--rank {
  background: var(--kb-brand-navy-900);
  color: #FFFFFF;
}

.kb-ribbon--award {
  background: var(--kb-accent-gold-400);
  color: var(--kb-accent-gold-text-strong);
}

.kb-ribbon--low-stock {
  background: var(--kb-brand-red-600);
  color: #FFFFFF;
}

/* ── CMP-036 Cover placeholder ───────────────────────────────────── */
.kb-cover-ph {
  --kb-cover-bg: var(--kb-cover-1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  aspect-ratio: 2 / 3;
  width: 100%;
  height: 100%;
  /* Static cover placeholders set box-sizing: border-box with padding + aspect-ratio. */
  box-sizing: border-box;
  background: var(--kb-cover-bg);
  border-radius: var(--kb-radius-book);
  padding: 12px 10px;
  text-align: left;
  box-shadow: var(--kb-shadow-book-card);
}

.kb-cover-ph--awarded {
  justify-content: flex-end;
  border-radius: var(--kb-radius-sm);
  padding: 14px 12px;
  box-shadow: var(--kb-shadow-book-on-dark);
}

.kb-cover-ph--awarded .kb-cover-ph__title {
  font-size: var(--kb-fs-24);
  color: var(--kb-text-on-cover);
}

.kb-cover-ph__rule {
  height: 2px;
  width: 20px;
  background: rgba(246, 238, 220, 0.55);
  flex: none;
}

.kb-cover-ph__title {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-19);
  line-height: var(--kb-lh-heading);
  color: var(--kb-text-on-cover);
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-cover-ph__cat {
  font-size: var(--kb-fs-10);
  color: rgba(246, 238, 220, 0.8);
}

/* ── CMP-007 Book card ───────────────────────────────────────────── */
.kb-book-card {
  position: relative;
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--kb-space-6);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-xl);
  padding: 0 14px 16px;
}

.kb-book-card__cover {
  width: 70%;
  margin-top: -40px;
  margin-bottom: var(--kb-space-8);
  display: block;
  aspect-ratio: 2 / 3;
  border-radius: var(--kb-radius-book);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--kb-shadow-book-card);
}

.kb-book-card__cover .kb-cover-ph {
  box-shadow: none;
}

.kb-book-card__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 3;
}

.kb-book-card__title {
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-16);
  line-height: var(--kb-lh-title);
  min-height: 2.7em;
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-book-card__meta {
  max-width: 100%;
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.kb-book-card__price {
  margin-top: auto;
  padding-top: var(--kb-space-4);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-19);
  color: var(--kb-brand-green-700);
}

.kb-book-card__add {
  width: 100%;
  min-height: var(--kb-touch);
  margin-top: var(--kb-space-4);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--kb-space-8);
  border: 1.5px solid var(--kb-brand-navy-900);
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
  font: inherit;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-14);
  line-height: 1;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.kb-book-card__add--oos,
.kb-book-card__add:disabled {
  cursor: pointer;
  color: var(--kb-feedback-danger-text);
  border-color: var(--kb-border-default);
  background: var(--kb-surface-sand);
}

.kb-book-card__add:disabled {
  cursor: not-allowed;
}

/* Storefront out-of-stock / alert modal */
.kb-alert-modal__dialog {
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.kb-alert-modal__content {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  background:
    radial-gradient(120% 80% at 50% -10%, var(--kb-slide-sage) 0%, transparent 55%),
    var(--kb-surface-card);
  box-shadow: var(--kb-shadow-book-detail);
  text-align: center;
}

.kb-alert-modal__close {
  position: absolute;
  top: var(--kb-space-12);
  right: var(--kb-space-12);
  z-index: 2;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--kb-radius-pill);
  background: transparent;
  color: var(--kb-text-muted);
  cursor: pointer;
}

.kb-alert-modal__close:hover {
  background: var(--kb-surface-sand);
  color: var(--kb-brand-navy-900);
}

.kb-alert-modal__hero {
  display: flex;
  justify-content: center;
  padding: var(--kb-space-32) var(--kb-space-24) var(--kb-space-8);
}

.kb-alert-modal__icon {
  width: 88px;
  height: 88px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  box-shadow: var(--kb-shadow-card-hover);
  animation: kb-alert-pop 0.45s ease both;
}

.kb-alert-modal.show .kb-alert-modal__icon {
  animation: kb-alert-pop 0.45s ease both;
}

@keyframes kb-alert-pop {
  0% {
    opacity: 0;
    transform: translateY(10px) scale(0.92);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.kb-alert-modal__body {
  padding: var(--kb-space-8) var(--kb-space-28) var(--kb-space-8);
}

.kb-alert-modal__eyebrow {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--kb-space-10);
  padding: var(--kb-space-4) var(--kb-space-12);
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-sand);
  color: var(--kb-feedback-danger-text);
  font-size: var(--kb-fs-12);
  font-weight: var(--kb-weight-semibold);
  letter-spacing: var(--kb-ls-caps);
  text-transform: uppercase;
}

.kb-alert-modal__title {
  margin: 0 0 var(--kb-space-10);
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-24);
  line-height: var(--kb-lh-heading);
  color: var(--kb-brand-navy-900);
}

.kb-alert-modal__message {
  margin: 0 0 var(--kb-space-16);
  font-size: var(--kb-fs-16);
  line-height: var(--kb-lh-body);
  color: var(--kb-text-secondary);
}

.kb-alert-modal__tip {
  display: flex;
  align-items: flex-start;
  gap: var(--kb-space-10);
  text-align: left;
  padding: var(--kb-space-12) var(--kb-space-14);
  border-radius: var(--kb-radius-xl);
  background: var(--kb-brand-green-50);
  border: 1px solid var(--kb-brand-green-100);
}

.kb-alert-modal__tip-icon {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-card);
  color: var(--kb-brand-green-800);
}

.kb-alert-modal__tip-text {
  font-size: var(--kb-fs-14);
  line-height: var(--kb-lh-body);
  color: var(--kb-brand-green-900);
}

.kb-alert-modal__footer {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-10);
  padding: var(--kb-space-16) var(--kb-space-28) var(--kb-space-28);
}

.kb-alert-modal__browse {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--kb-touch);
  padding: 0 var(--kb-space-20);
  border: 0;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  text-decoration: none;
  font: inherit;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-16);
}

.kb-alert-modal__browse:hover {
  background: var(--kb-brand-green-800);
  color: #FFFFFF;
}

.kb-alert-modal__ok {
  min-height: var(--kb-touch);
  padding: 0 var(--kb-space-20);
  border: 1.5px solid var(--kb-brand-navy-900);
  border-radius: var(--kb-radius-lg);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
  font: inherit;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-15);
  cursor: pointer;
}

.kb-alert-modal__ok:hover {
  background: var(--kb-surface-sand);
}

/* ── CMP-012 Section header ──────────────────────────────────────── */
.kb-section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  margin-bottom: var(--kb-space-24);
}

.kb-section-head--reviews {
  margin-bottom: 28px;
}

.kb-section-head__copy {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-4);
  max-width: 640px;
}

.kb-section-head__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-34);
  color: var(--kb-brand-navy-900);
}

.kb-section-head__title-en {
  font-family: var(--kb-font-body);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-20);
  color: var(--kb-text-muted);
}

.kb-section-head__subtitle {
  margin: 0;
  color: var(--kb-text-muted);
  font-size: var(--kb-fs-16);
}

.kb-section-head__actions {
  display: flex;
  align-items: center;
  gap: var(--kb-space-8);
}

.kb-section-head__link {
  font-weight: var(--kb-weight-semibold);
  min-height: var(--kb-touch);
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--kb-brand-navy-900);
}

/* Static HTML: view-all link has margin-right: 8px before row arrows (gap is separate). */
.kb-section-head__actions .kb-section-head__link:not(:last-child) {
  margin-right: var(--kb-space-8);
}

.kb-section-head__link:hover {
  color: var(--kb-brand-green-700);
}

/* ── CMP-011 Category tiles ──────────────────────────────────────── */
.kb-cat-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}

.kb-cat-tile {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 18px 20px;
  border-radius: var(--kb-radius-xl);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  text-decoration: none;
}

.kb-cat-tile__np {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-20);
  line-height: var(--kb-lh-title);
  color: var(--kb-brand-navy-900);
}

.kb-cat-tile__en {
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

/* ── CMP-010 Book row ────────────────────────────────────────────── */
.kb-book-row__viewport {
  overflow: hidden;
  padding: 4px 0 28px;
  margin: 0 -4px;
}

.kb-book-row__track {
  display: flex;
  gap: var(--kb-space-24);
  padding: 0 4px;
  transform: translateX(0);
  transition: transform var(--kb-ease-row);
}

.kb-book-row__item {
  flex: 0 0 200px;
}

/* ── CMP-009 Hero ────────────────────────────────────────────────── */
.kb-hero {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: 28px var(--kb-gutter) var(--kb-space-8);
}

.kb-hero__viewport {
  overflow: hidden;
  border-radius: var(--kb-radius-hero);
}

.kb-hero__track {
  display: flex;
  transform: translateX(0%);
  transition: transform var(--kb-ease-hero);
}

.kb-hero__slide {
  flex: 0 0 100%;
  min-width: 0;
  padding: var(--kb-space-48) 56px;
  /* Explicit border-box (matches static slide inline style); root uses content-box. */
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-32) var(--kb-space-48);
  min-height: 440px;
}

.kb-hero__copy {
  flex: 1 1 400px;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-16);
  max-width: 560px;
}

.kb-hero__eyebrow {
  align-self: flex-start;
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-bold);
  color: #FFFFFF;
  padding: 5px 14px;
  border-radius: var(--kb-radius-pill);
}

.kb-hero__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-46);
  line-height: var(--kb-lh-heading);
  color: var(--kb-brand-navy-900);
}

.kb-hero__text {
  margin: 0;
  font-size: var(--kb-fs-18);
  line-height: var(--kb-lh-body);
  color: var(--kb-text-body);
}

.kb-hero__cta {
  align-self: flex-start;
  margin-top: var(--kb-space-8);
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-8);
  min-height: 50px;
  padding: 0 26px;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-17);
}

.kb-hero__cta:hover {
  color: #FFFFFF;
  background: var(--kb-brand-green-800);
}

.kb-hero__covers {
  flex: 1 1 360px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-width: 0;
}

.kb-hero__cover {
  flex: none;
  aspect-ratio: 2 / 3;
  margin: 0 -18px;
  border-radius: 3px 8px 8px 3px;
  padding: 16px 14px;
  /* Static hero covers: box-sizing: border-box */
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: var(--kb-shadow-book-hero);
}

.kb-hero__cover--side {
  width: 150px;
  z-index: 1;
}

.kb-hero__cover--side:first-child {
  transform: rotate(-7deg) translateY(14px);
}

.kb-hero__cover--side:last-child {
  transform: rotate(7deg) translateY(14px);
}

.kb-hero__cover--center {
  width: 190px;
  z-index: 2;
  transform: none;
}

.kb-hero__cover-title {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  line-height: 1.15;
  color: var(--kb-text-on-cover-strong);
}

.kb-hero__cover--side .kb-hero__cover-title {
  font-size: var(--kb-fs-24);
}

.kb-hero__cover--center .kb-hero__cover-title {
  font-size: var(--kb-fs-30);
}

.kb-hero__controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
}

.kb-hero__dots {
  display: flex;
  align-items: center;
}

.kb-hero__dot {
  width: 36px;
  height: 44px;
  border: 0;
  background: none;
  display: grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
}

.kb-hero__dot-bar {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-border-step-inactive);
  transition: width 0.3s ease;
}

.kb-hero__dot[aria-current='true'] .kb-hero__dot-bar {
  width: 26px;
  background: var(--kb-brand-navy-900);
}

.kb-hero__nav {
  display: flex;
  gap: var(--kb-space-8);
}

/* ── CMP-013 Awarded band ────────────────────────────────────────── */
.kb-awarded {
  background: var(--kb-brand-navy-900);
  color: var(--kb-text-on-dark);
  margin-top: var(--kb-space-56);
}

.kb-awarded__inner {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-64) var(--kb-gutter);
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-48);
  align-items: stretch;
}

.kb-awarded__intro {
  flex: 1 1 320px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
}

.kb-awarded__badge {
  align-self: flex-start;
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-accent-gold-text);
  background: var(--kb-accent-gold-400);
  padding: 6px 14px;
  border-radius: var(--kb-radius-pill);
}

.kb-awarded__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-38);
  line-height: 1.3;
  color: #FFFFFF;
}

.kb-awarded__text {
  margin: 0;
  font-size: var(--kb-fs-17);
  line-height: var(--kb-lh-body);
  color: var(--kb-text-on-dark-muted);
}

.kb-awarded__cta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 var(--kb-space-24);
  border-radius: var(--kb-radius-lg);
  background: #FFFFFF;
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  font-weight: var(--kb-weight-semibold);
}

.kb-awarded__cta:hover {
  color: var(--kb-brand-navy-900);
  background: var(--kb-surface-sand);
}

.kb-awarded__grid {
  flex: 2 1 560px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--kb-space-24);
}

.kb-awarded__item {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-10);
  text-decoration: none;
  color: #FFFFFF;
}

.kb-awarded__item:hover {
  color: #FFFFFF;
}

.kb-awarded__cover {
  display: block;
  aspect-ratio: 2 / 3;
  border-radius: var(--kb-radius-sm);
  overflow: hidden;
  box-shadow: var(--kb-shadow-book-on-dark);
}

.kb-awarded__cover .kb-cover-ph {
  box-shadow: none;
}

.kb-awarded__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 3;
}

.kb-awarded__caption {
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-16);
}

.kb-awarded__price {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-text-on-dark-price);
}

/* ── CMP-014 Review card ─────────────────────────────────────────── */
.kb-review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--kb-space-24);
}

.kb-review-card {
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-2xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-review-card__date {
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-review-card__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-22);
  line-height: 1.4;
  color: var(--kb-brand-navy-900);
}

.kb-review-card__excerpt {
  margin: 0;
  font-size: var(--kb-fs-16);
  line-height: 1.7;
  color: var(--kb-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-review-card__link {
  margin-top: auto;
  font-weight: var(--kb-weight-semibold);
  min-height: var(--kb-touch);
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--kb-brand-navy-900);
}

/* ── SCR-002 Category page ───────────────────────────────────────── */
.kb-category-page {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: 28px var(--kb-gutter) var(--kb-space-72);
}

.kb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-8);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-breadcrumb a {
  color: var(--kb-text-muted);
  text-decoration: underline;
}

.kb-breadcrumb a:hover {
  color: var(--kb-brand-green-700);
}

.kb-breadcrumb__sep {
  color: var(--kb-text-muted);
}

.kb-breadcrumb__current {
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-semibold);
}

.kb-category-page__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--kb-space-16);
  margin: 14px 0 var(--kb-space-28);
}

.kb-category-page__titles {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-4);
}

.kb-category-page__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-40);
  color: var(--kb-brand-navy-900);
  line-height: var(--kb-lh-heading);
}

.kb-category-page__title-en {
  font-family: var(--kb-font-body);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-22);
  color: var(--kb-text-muted);
}

.kb-category-page__count {
  margin: 0;
  color: var(--kb-text-muted);
}

/* CMP-022 Sort */
.kb-sort {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-12);
}

.kb-sort__label {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-sort__select {
  min-height: var(--kb-touch);
  padding: 0 14px;
  border-radius: var(--kb-radius-lg);
  border: 1px solid var(--kb-border-strong);
  background: var(--kb-surface-card);
  font: inherit;
  color: var(--kb-brand-navy-900);
}

/* Two-column: filters + results */
.kb-category-page__body {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-32);
  align-items: flex-start;
}

/* CMP-020 Filter sidebar */
.kb-filters {
  flex: 0 1 300px;
  width: 300px;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-22);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-2xl);
  padding: var(--kb-space-24);
  box-sizing: border-box;
}

.kb-filters__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--kb-space-12);
}

.kb-filters__title {
  margin: 0;
  font-size: var(--kb-fs-18);
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-bold);
}

.kb-filters__clear {
  display: inline-flex;
  align-items: center;
  border: 0;
  background: none;
  font: inherit;
  color: var(--kb-brand-green-700);
  font-weight: var(--kb-weight-semibold);
  min-height: var(--kb-touch);
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}

.kb-filters__clear:hover {
  color: var(--kb-brand-green-800);
}

.kb-filters__apply {
  margin-top: var(--kb-space-8);
  min-height: var(--kb-touch);
  padding: 0 var(--kb-space-16);
  border: 0;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  font: inherit;
  font-weight: var(--kb-weight-semibold);
  cursor: pointer;
}

.kb-filters__fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-8);
  min-width: 0;
}

.kb-filters__options {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-8);
}

.kb-filters__fieldset--bordered {
  border-top: 1px solid var(--kb-border-divider);
  padding-top: 18px;
}

.kb-filters__legend {
  float: left;
  width: 100%;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
  margin-bottom: var(--kb-space-8);
  padding: 0;
}

.kb-filters__check {
  display: flex;
  align-items: center;
  gap: var(--kb-space-10);
  min-height: var(--kb-space-32);
  cursor: pointer;
  color: var(--kb-text-default);
}

.kb-filters__check input {
  width: 18px;
  height: 18px;
  accent-color: var(--kb-brand-green-700);
  flex: none;
}

.kb-filters__price {
  display: flex;
  gap: var(--kb-space-10);
  align-items: center;
}

.kb-filters__price-field {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-4);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
  flex: 1;
  min-width: 0;
}

.kb-filters__price-field input {
  min-height: 40px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-md);
  padding: 0 10px;
  font: inherit;
  width: 100%;
  box-sizing: border-box;
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
}

.kb-filters__empty {
  margin: 0;
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

/* Results column */
.kb-category-page__results {
  flex: 999 1 560px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-32);
}

/* CMP-021 Filter chips */
.kb-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-8);
}

.kb-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-6);
  padding: 6px 8px 6px 14px;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-brand-green-100);
  color: var(--kb-brand-green-900);
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-14);
}

.kb-filter-chip__remove {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: var(--kb-radius-pill);
  background: transparent;
  color: inherit;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  text-decoration: none;
}

.kb-filter-chip__remove:hover {
  color: var(--kb-brand-navy-900);
}


/* SCR-002 empty results (Q-022 provisional) */
.kb-listing-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--kb-space-24);
  margin: var(--kb-space-16) 0;
  padding: var(--kb-space-40) var(--kb-space-24);
  background:
    linear-gradient(180deg, var(--kb-surface-card) 0%, var(--kb-surface-sand) 100%);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-2xl);
  box-sizing: border-box;
  min-height: 320px;
  justify-content: center;
}

.kb-listing-empty__art {
  position: relative;
  width: min(220px, 70vw);
}

.kb-listing-empty__glow {
  position: absolute;
  inset: 18% 10% 8%;
  background: radial-gradient(ellipse at center, var(--kb-brand-green-100) 0%, transparent 70%);
  opacity: 0.9;
  pointer-events: none;
}

.kb-listing-empty__shelf {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
}

.kb-listing-empty__book--a {
  transform-origin: 62px 108px;
  animation: kb-listing-empty-sway 5.5s ease-in-out infinite;
}

.kb-listing-empty__book--b {
  transform-origin: 97px 108px;
  animation: kb-listing-empty-sway 6.2s ease-in-out infinite 0.4s;
}

.kb-listing-empty__book--c {
  transform-origin: 168px 108px;
  animation: kb-listing-empty-sway 5.8s ease-in-out infinite 0.8s;
}

.kb-listing-empty__book--gap {
  animation: kb-listing-empty-pulse 2.8s ease-in-out infinite;
}

@keyframes kb-listing-empty-sway {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-2.2deg); }
}

@keyframes kb-listing-empty-pulse {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 1; }
}

.kb-listing-empty__copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--kb-space-12);
  max-width: 28rem;
}

.kb-listing-empty__title {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-28);
  line-height: var(--kb-lh-heading);
  color: var(--kb-brand-navy-900);
}

.kb-listing-empty__title-en {
  font-family: var(--kb-font-body);
  font-size: var(--kb-fs-18);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-text-muted);
}

.kb-listing-empty__body {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: var(--kb-fs-16);
  line-height: 1.45;
  color: var(--kb-text-body);
}

.kb-listing-empty__body [lang='en'] {
  color: var(--kb-text-muted);
  font-size: var(--kb-fs-15);
}

.kb-listing-empty__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--kb-touch);
  margin-top: var(--kb-space-8);
  padding: 0 var(--kb-space-24);
  border-radius: var(--kb-radius-pill);
  background: var(--kb-brand-navy-900);
  color: #FFFFFF;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-15);
  text-decoration: none;
}

.kb-listing-empty__cta:hover {
  background: var(--kb-brand-navy-950);
  color: #FFFFFF;
}

.kb-listing-empty__cta:focus,
.kb-listing-empty__cta.kb-is-focused {
  outline: 2px solid var(--kb-brand-navy-900) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 2px var(--kb-surface-page) !important;
}

@media (prefers-reduced-motion: reduce) {
  .kb-listing-empty__book--a,
  .kb-listing-empty__book--b,
  .kb-listing-empty__book--c,
  .kb-listing-empty__book--gap {
    animation: none;
  }
}

.kb-listing-filters {
  margin: 0;
  padding: 0;
  border: 0;
}

/* CMP-023 Pagination */
.kb-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--kb-space-8);
  padding-top: 16px;
  border-top: 1px solid var(--kb-border-default);
}

.kb-pagination__prev,
.kb-pagination__next {
  display: inline-flex;
  align-items: center;
  min-height: var(--kb-touch);
  padding: 0 16px;
  border-radius: var(--kb-radius-lg);
  border: 1px solid var(--kb-border-default);
  background: var(--kb-surface-card);
  text-decoration: none;
  color: var(--kb-brand-navy-900);
  box-sizing: border-box;
}

.kb-pagination__next {
  font-weight: var(--kb-weight-semibold);
}

.kb-pagination__prev.is-disabled,
.kb-pagination__next.is-disabled {
  color: var(--kb-text-disabled);
  pointer-events: none;
}

.kb-pagination__page {
  display: grid;
  place-items: center;
  width: var(--kb-touch);
  height: var(--kb-touch);
  border-radius: var(--kb-radius-lg);
  border: 1px solid var(--kb-border-default);
  background: var(--kb-surface-card);
  text-decoration: none;
  color: var(--kb-brand-navy-900);
  box-sizing: border-box;
}

.kb-pagination__page.is-current {
  background: var(--kb-brand-navy-900);
  border-color: var(--kb-brand-navy-900);
  color: #FFFFFF;
  font-weight: var(--kb-weight-bold);
}

.kb-pagination__ellipsis {
  display: grid;
  place-items: center;
  width: 32px;
  height: var(--kb-touch);
  color: var(--kb-text-muted);
}

/* CMP-017 Compact footer */
.kb-footer--compact .kb-footer-compact__inner {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-48) var(--kb-gutter) 28px;
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-32);
  justify-content: space-between;
  align-items: flex-start;
}

.kb-footer-compact__brand {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-10);
  max-width: 360px;
}

.kb-footer-compact__wordmark {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-28);
  color: #FFFFFF;
  line-height: var(--kb-lh-tight);
}

.kb-footer-compact__tagline {
  margin: 0;
  line-height: var(--kb-lh-body);
  color: var(--kb-text-on-dark-muted);
}

.kb-footer-compact__contact {
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-8);
  color: var(--kb-text-on-dark-muted);
}

.kb-footer-compact__contact a {
  color: var(--kb-text-on-dark-muted);
  text-decoration: none;
}

.kb-footer-compact__contact a:hover {
  color: var(--kb-brand-green-700);
}

/* Legacy subcategory chips (unused on SCR-002 layout; keep for other screens) */
.kb-subcat-chips {
  margin: 0 0 var(--kb-space-28);
}

.kb-subcat-chips__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-8);
}

.kb-subcat-chips__chip {
  display: inline-flex;
  align-items: center;
  min-height: var(--kb-touch);
  padding: 6px 14px;
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-pill);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-14);
  text-decoration: none;
  box-sizing: border-box;
}

.kb-subcat-chips__chip:hover {
  background: var(--kb-surface-sand-hover);
  color: var(--kb-brand-navy-900);
}

.kb-subcat-chips__chip.is-active {
  background: var(--kb-brand-green-100);
  border-color: var(--kb-brand-green-100);
  color: var(--kb-brand-green-900);
}

/* ── Homepage publisher logo marquee ─────────────────────────────── */
.kb-publishers__viewport {
  overflow: hidden;
  padding: 4px 0;
}

.kb-publishers__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--kb-space-24);
  width: max-content;
  will-change: transform;
}

.kb-publishers__item {
  flex: none;
}

.kb-publishers__logo-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--kb-space-10);
  width: 180px;
  min-height: 128px;
  padding: 16px 14px 14px;
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-xl);
  background: var(--kb-surface-card);
  text-decoration: none;
  box-sizing: border-box;
  color: var(--kb-brand-navy-900);
}

.kb-publishers__logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 48px;
}

.kb-publishers__logo {
  display: block;
  max-width: 100%;
  max-height: 48px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.kb-publishers__logo-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-surface-sand);
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-18);
  color: var(--kb-brand-navy-900);
}

.kb-publishers__name {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  width: 100%;
  text-align: center;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-14);
  line-height: var(--kb-lh-title);
  color: var(--kb-brand-navy-900);
}

.kb-publishers--static .kb-publishers__viewport {
  mask-image: none;
  overflow-x: auto;
}

.kb-publishers--static .kb-publishers__track {
  transform: none !important;
}

/* ── SCR-001 section spacing ─────────────────────────────────────── */
.kb-home-section--tiles {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-24) var(--kb-gutter) var(--kb-space-8);
}

.kb-home-section--new {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-56) var(--kb-gutter) var(--kb-space-8);
}

.kb-home-section--bestsellers {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-40) var(--kb-gutter) var(--kb-space-24);
}

.kb-home-section--reviews {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-56) var(--kb-gutter) var(--kb-space-24);
}

.kb-home-section--publishers {
  max-width: var(--kb-container);
  margin: 0 auto var(--kb-space-24);
  padding: var(--kb-space-56) var(--kb-gutter) var(--kb-space-24);
}

.kb-book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 40px var(--kb-space-24);
}

.kb-book-grid.kb-book-grid--category {
  gap: 44px var(--kb-space-24);
}

/* ── CMP-036 thumb (drawer) ──────────────────────────────────────── */
.kb-cover-ph--thumb {
  justify-content: flex-end;
  border-radius: 2px 4px 4px 2px;
  padding: 8px 7px;
  box-shadow: var(--kb-shadow-book-thumb-drawer);
}

.kb-cover-ph--thumb .kb-cover-ph__title {
  font-size: var(--kb-fs-13);
  line-height: 1.2;
  color: var(--kb-text-on-cover);
  -webkit-line-clamp: 3;
}

/* ── CMP-034 Cart drawer (Bootstrap Offcanvas) ───────────────────── */
.kb-cart-drawer.offcanvas {
  --bs-offcanvas-width: min(420px, 100%);
  width: min(420px, 100%);
  background: var(--kb-surface-page);
  color: var(--kb-text-default);
  border: 0;
  box-shadow: var(--kb-shadow-drawer);
}

.kb-cart-drawer .offcanvas-backdrop,
.offline-backdrop {
  --bs-backdrop-bg: rgb(20, 19, 58);
  --bs-backdrop-opacity: 0.45;
}

.kb-cart-drawer__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px 18px 24px;
  background: var(--kb-surface-card);
  border-bottom: 1px solid var(--kb-border-default);
}

.kb-cart-drawer__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-24);
  color: var(--kb-brand-navy-900);
}

.kb-cart-drawer__count {
  font-family: var(--kb-font-body);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-16);
  color: var(--kb-text-muted);
}

.kb-cart-drawer__body {
  display: flex;
  flex-direction: column;
  height: calc(100% - 81px);
  overflow: hidden;
}

.kb-cart-drawer__scroll {
  flex: 1;
  overflow-y: auto;
  padding: 4px 24px;
}

.kb-cart-line {
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--kb-border-divider);
}

.kb-cart-line__cover {
  flex: none;
  width: 64px;
  aspect-ratio: 2 / 3;
  border-radius: 2px 4px 4px 2px;
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--kb-shadow-book-thumb-drawer);
}

.kb-cart-line__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 3;
}

.kb-cart-line__cover .kb-cover-ph {
  box-shadow: none;
}

.kb-cart-line__main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-8);
}

.kb-cart-line__top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.kb-cart-line__info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.kb-cart-line__title {
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-16);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
}

.kb-cart-line__meta {
  font-size: var(--kb-fs-13);
  color: var(--kb-text-muted);
}

.kb-cart-line__total {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
  white-space: nowrap;
}

.kb-cart-line__actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kb-qty {
  display: flex;
  align-items: center;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-md);
  background: var(--kb-surface-card);
}

.kb-qty__btn {
  width: var(--kb-touch);
  height: 40px;
  border: 0;
  background: none;
  font-size: var(--kb-fs-18);
  color: var(--kb-brand-navy-900);
  cursor: pointer;
}

.kb-qty__value {
  min-width: 24px;
  text-align: center;
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-cart-line__remove {
  min-height: 40px;
  padding: 0 4px;
  border: 0;
  background: none;
  font: inherit;
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-feedback-danger-text);
  text-decoration: underline;
  cursor: pointer;
}

.kb-cart-drawer__foot {
  padding: 18px 24px 22px;
  background: var(--kb-surface-card);
  border-top: 1px solid var(--kb-border-default);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-cart-totals {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: var(--kb-fs-15);
}

.kb-cart-totals__row {
  display: flex;
  justify-content: space-between;
}

.kb-cart-totals__row dt {
  color: var(--kb-text-secondary);
}

.kb-cart-totals__row dd {
  margin: 0;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-cart-totals__discount {
  color: var(--kb-brand-green-900) !important;
}

.kb-cart-totals__row--total {
  align-items: baseline;
  padding-top: var(--kb-space-8);
  border-top: 1px solid var(--kb-border-divider);
  margin-top: var(--kb-space-4);
}

.kb-cart-totals__row--total dt {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-cart-totals__row--total dd {
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-22);
}

.kb-cart-drawer__note {
  font-size: var(--kb-fs-13);
  color: var(--kb-text-muted);
}

.kb-cart-drawer__ctas {
  display: flex;
  gap: 10px;
}

.kb-cart-drawer__view {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: var(--kb-radius-md);
  border: 1.5px solid var(--kb-brand-navy-900);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  font-weight: var(--kb-weight-bold);
}

.kb-cart-drawer__checkout {
  flex: 1.4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kb-space-8);
  min-height: 48px;
  border-radius: var(--kb-radius-md);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: var(--kb-weight-bold);
}

.kb-cart-drawer__checkout:hover {
  color: #FFFFFF;
  background: var(--kb-brand-green-800);
}

.kb-cart-drawer__cod {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--kb-fs-13);
  color: var(--kb-text-secondary);
}

.kb-cart-drawer__cod svg {
  color: var(--kb-brand-green-700);
  stroke: var(--kb-brand-green-700);
}

.kb-cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 48px 24px;
  text-align: center;
  min-height: 280px;
}

.kb-cart-empty__icon {
  color: var(--kb-text-disabled);
}

.kb-cart-empty__text {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: var(--kb-fs-16);
  color: var(--kb-text-secondary);
}

.kb-cart-empty__btn {
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--kb-radius-lg);
  border: 0;
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  font: inherit;
  font-weight: var(--kb-weight-bold);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.kb-cart-empty--page {
  min-height: 0;
  padding: var(--kb-space-48) 0;
}

.kb-cart-empty__text--inline {
  display: block;
  font-size: var(--kb-fs-18);
  color: var(--kb-text-secondary);
}

.kb-cover-ph--cart {
  justify-content: flex-end;
  width: 88px;
  aspect-ratio: 2 / 3;
  border-radius: 5px;
  padding: 10px 8px;
  box-shadow: var(--kb-shadow-book-thumb);
}

.kb-cover-ph--cart .kb-cover-ph__title {
  font-size: var(--kb-fs-14);
  line-height: 1.2;
  color: var(--kb-text-on-cover);
  -webkit-line-clamp: 4;
}

/* ── SCR-004 / CMP-004 / CMP-005 / CMP-018 Checkout chrome ───────── */
.kb-checkout-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--kb-surface-page);
  color: var(--kb-text-default);
  font-family: var(--kb-font-body);
  font-size: var(--kb-fs-16);
}

.kb-checkout-main {
  flex: 1;
  width: 100%;
}

.kb-checkout-header {
  background: var(--kb-surface-card);
  border-bottom: 1px solid var(--kb-border-default);
}

.kb-checkout-header__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px var(--kb-space-24);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--kb-space-16) var(--kb-space-32);
}

.kb-checkout-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-8);
  text-decoration: none;
  color: var(--kb-brand-navy-900);
}

.kb-checkout-header__wordmark {
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-30);
  line-height: 1;
}

.kb-checkout-header__help {
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-8);
  min-height: var(--kb-touch);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
}

.kb-checkout-header__help:hover {
  color: var(--kb-brand-green-700);
}

.kb-checkout-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-15);
}

/* CMP-005 in page body (cart / checkout / confirmed) — not in site header */
.kb-checkout-steps.kb-page-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  margin: 0 0 var(--kb-space-40);
  padding: 0;
}

.kb-checkout-steps__item {
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-8);
  color: var(--kb-text-muted);
}

.kb-checkout-steps__item--current {
  color: var(--kb-brand-navy-900);
}

.kb-checkout-steps__item--completed {
  color: var(--kb-brand-green-900);
}

.kb-checkout-steps__num {
  width: 28px;
  height: 28px;
  border-radius: var(--kb-radius-pill);
  display: grid;
  place-items: center;
  font-size: var(--kb-fs-14);
  box-sizing: border-box;
  border: 2px solid var(--kb-border-step-inactive);
  color: var(--kb-text-muted);
  background: transparent;
}

.kb-checkout-steps__item--current .kb-checkout-steps__num {
  background: var(--kb-brand-navy-900);
  border-color: var(--kb-brand-navy-900);
  color: #FFFFFF;
}

.kb-checkout-steps__item--completed .kb-checkout-steps__num {
  background: var(--kb-brand-green-700);
  border-color: var(--kb-brand-green-700);
  color: #FFFFFF;
}

.kb-checkout-steps__link {
  display: inline-flex;
  align-items: center;
  gap: var(--kb-space-8);
  color: inherit;
  text-decoration: none;
}

.kb-checkout-steps__link:hover {
  color: var(--kb-brand-green-700);
}

.kb-checkout-steps__line {
  width: 32px;
  height: 2px;
  background: var(--kb-border-strong);
}

.kb-checkout-steps__line--done {
  background: var(--kb-brand-green-700);
}

.kb-footer-checkout {
  background: var(--kb-surface-card);
  border-top: 1px solid var(--kb-border-default);
}

.kb-footer-checkout__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: var(--kb-space-20) var(--kb-space-24);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--kb-space-8) var(--kb-space-24);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-footer-checkout__inner a {
  color: var(--kb-text-muted);
  text-decoration: none;
}

.kb-footer-checkout__inner a:hover {
  color: var(--kb-brand-green-700);
}

/* ── SCR-004 Cart page ───────────────────────────────────────────── */
.kb-cart-page {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-40) var(--kb-gutter) var(--kb-space-80);
}

.kb-cart-page__title-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--kb-space-12);
  margin-bottom: 28px;
}

.kb-cart-page__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-40);
  line-height: var(--kb-lh-heading);
  color: var(--kb-brand-navy-900);
}

.kb-cart-page__title-en {
  display: inline;
  margin-left: 6px;
  font-family: var(--kb-font-body);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-22);
  color: var(--kb-text-muted);
}

.kb-cart-page__continue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: var(--kb-touch);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
}

.kb-cart-page__continue:hover {
  color: var(--kb-brand-green-700);
}

.kb-cart-page__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-32);
  align-items: flex-start;
}

.kb-cart-alert {
  flex: 1 1 100%;
  margin: 0 0 0;
  padding: 14px 18px;
  border-radius: var(--kb-radius-lg);
  border: 1px solid #F0C2BE;
  background: #FDF2F1;
  color: var(--kb-feedback-danger-text);
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-15);
}

.kb-cart-line--oos {
  opacity: 0.92;
}

.kb-order-summary__cta--blocked,
.kb-cart-drawer__checkout--blocked {
  opacity: 0.65;
}

.kb-cart-page__items {
  flex: 999 1 560px;
  min-width: 0;
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  padding: var(--kb-space-8) 28px;
}

.kb-cart-line--page {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-20);
  padding: var(--kb-space-24) 0;
  border-bottom: 1px solid var(--kb-border-divider);
}

.kb-cart-line--page:last-child {
  border-bottom: none;
}

.kb-cart-line--page .kb-cart-line__cover {
  width: 88px;
  aspect-ratio: 2 / 3;
  border-radius: 5px;
  box-shadow: var(--kb-shadow-book-thumb);
}

.kb-cart-line--page .kb-cart-line__details {
  flex: 1 1 180px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kb-cart-line--page .kb-cart-line__title {
  font-size: var(--kb-fs-18);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.kb-cart-line--page .kb-cart-line__meta,
.kb-cart-line--page .kb-cart-line__unit {
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-cart-line--page .kb-cart-line__remove {
  align-self: flex-start;
  margin-top: 4px;
  min-height: var(--kb-touch);
}

.kb-cart-line--page .kb-cart-line__total {
  flex: none;
  width: 110px;
  text-align: right;
  font-size: var(--kb-fs-19);
  font-weight: var(--kb-weight-bold);
}

.kb-cart-line--page .kb-cart-line__cover .kb-cover-ph--cart {
  width: 100%;
  height: 100%;
}

.kb-qty--cart {
  display: inline-flex;
  align-items: center;
  background: var(--kb-surface-page);
  border-radius: var(--kb-radius-lg);
}

.kb-qty--cart form {
  margin: 0;
  display: inline-flex;
}

.kb-qty--cart .kb-qty__btn {
  box-sizing: border-box;
  width: var(--kb-touch);
  min-width: var(--kb-touch);
  height: var(--kb-touch);
  padding: 0;
  line-height: 1;
}

.kb-qty--cart .kb-qty__btn:disabled,
.kb-qty .kb-qty__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.kb-qty--cart .kb-qty__value {
  font-size: var(--kb-fs-16);
  min-width: 28px;
}

.kb-cart-line__remove-form {
  margin: 0;
  display: inline;
}

.kb-cart-line__stock {
  font-size: var(--kb-fs-13);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-feedback-danger-text);
}

.kb-promo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 0;
}

.kb-promo__label {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-promo__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-12);
  align-items: flex-end;
}

.kb-promo__input {
  flex: 1 1 220px;
  max-width: 360px;
  min-height: 46px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-lg);
  padding: 0 14px;
  font: inherit;
  background: var(--kb-surface-page);
  color: var(--kb-text-default);
}

.kb-promo__apply {
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--kb-radius-lg);
  border: 1.5px solid var(--kb-brand-navy-900);
  background: var(--kb-surface-card);
  font: inherit;
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
  cursor: pointer;
}

.kb-order-summary {
  flex: 1 1 320px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  padding: 28px;
}

.kb-order-summary__title {
  margin: 0;
  font-size: var(--kb-fs-20);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary__rows {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-12);
  font-size: var(--kb-fs-16);
}

.kb-order-summary__row {
  display: flex;
  justify-content: space-between;
  gap: var(--kb-space-12);
}

.kb-order-summary__row dt {
  color: var(--kb-text-secondary);
}

.kb-order-summary__row dd {
  margin: 0;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary__discount {
  color: var(--kb-brand-green-900);
}

.kb-order-summary__delivery {
  font-weight: var(--kb-weight-regular) !important;
  color: var(--kb-text-secondary) !important;
}

.kb-order-summary__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: var(--kb-space-16);
  border-top: 1px solid var(--kb-border-default);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary__total span:first-child {
  font-size: var(--kb-fs-18);
}

.kb-order-summary__total span:last-child {
  font-size: var(--kb-fs-28);
}

.kb-order-summary__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kb-space-8);
  min-height: 52px;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-17);
}

.kb-order-summary__cta:hover {
  background: var(--kb-brand-green-800);
  color: #FFFFFF;
}

.kb-order-summary__notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-8);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-secondary);
}

.kb-order-summary__notes li {
  display: flex;
  align-items: center;
  gap: var(--kb-space-8);
}

.kb-order-summary__notes svg {
  flex: none;
  color: var(--kb-brand-green-700);
  stroke: var(--kb-brand-green-700);
}

/* ── SCR-005 Checkout (delivery details) ─────────────────────────── */
.kb-checkout-page {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: var(--kb-space-40) var(--kb-gutter) var(--kb-space-80);
}

.kb-checkout-page__title {
  margin: 0 0 28px;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-40);
  line-height: var(--kb-lh-heading);
  color: var(--kb-brand-navy-900);
}

.kb-checkout-page__title-en {
  font-family: var(--kb-font-body);
  font-weight: var(--kb-weight-medium);
  font-size: var(--kb-fs-22);
  color: var(--kb-text-muted);
}

.kb-checkout-error-summary {
  margin: 0 0 var(--kb-space-8);
  padding: 14px 16px;
  border-radius: var(--kb-radius-lg);
  border: 1px solid var(--kb-danger);
  background: #FDECEC;
  color: var(--kb-danger);
  font-size: var(--kb-fs-14);
}

.kb-checkout-error-summary:focus {
  outline: 2px solid var(--kb-danger);
  outline-offset: 2px;
}

.kb-checkout-error-summary__title {
  margin: 0 0 8px;
  font-weight: var(--kb-weight-bold);
}

.kb-checkout-error-summary__list {
  margin: 0;
  padding-left: 1.2em;
}

.kb-checkout-error-summary__list a {
  color: var(--kb-danger);
}

.kb-checkout-error-summary__list a:hover {
  color: var(--kb-brand-red-600);
}

/* ── SCR-005 Confirmed (Q-002 provisional) ───────────────────────── */
.kb-checkout-confirmed__hero {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--kb-space-20);
  margin: 0 0 var(--kb-space-28);
  max-width: 40rem;
}

.kb-checkout-confirmed__icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 999px;
  background: var(--kb-brand-green-50);
  border: 2px solid var(--kb-brand-green-100);
  color: var(--kb-brand-green-700);
  animation: kb-confirmed-pop 0.45s ease-out;
}

.kb-checkout-confirmed__icon svg {
  display: block;
}

@keyframes kb-confirmed-pop {
  0% {
    transform: scale(0.7);
    opacity: 0;
  }
  70% {
    transform: scale(1.06);
    opacity: 1;
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kb-checkout-confirmed__icon {
    animation: none;
  }
}

.kb-checkout-confirmed__title {
  margin: 0;
}

.kb-checkout-confirmed__title .kb-checkout-page__title-en {
  display: block;
  margin-top: 6px;
}

.kb-checkout-confirmed__order-chip {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-10) var(--kb-space-12);
  margin: 0;
  padding: 10px 12px 10px 16px;
  border-radius: var(--kb-radius-xl);
  background: var(--kb-surface-sand);
  border: 1px solid var(--kb-border-default);
}

.kb-checkout-confirmed__order-chip-label {
  font-size: var(--kb-fs-13);
  font-weight: var(--kb-weight-semibold);
  letter-spacing: var(--kb-ls-caps);
  text-transform: uppercase;
  color: var(--kb-text-muted);
}

.kb-checkout-confirmed__order-chip-value {
  font-size: var(--kb-fs-18);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
  font-variant-numeric: tabular-nums;
}

.kb-checkout-confirmed__copy {
  appearance: none;
  border: 1px solid var(--kb-border-strong);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
  border-radius: var(--kb-radius-md);
  min-height: 36px;
  padding: 0 12px;
  font: inherit;
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-semibold);
  cursor: pointer;
}

.kb-checkout-confirmed__copy:hover {
  background: var(--kb-surface-sand-hover);
  border-color: var(--kb-border-hover);
}

.kb-checkout-confirmed__copy.is-copied,
.kb-checkout-confirmed__copy:focus-visible {
  border-color: var(--kb-brand-green-700);
  color: var(--kb-brand-green-900);
  outline: none;
}

.kb-checkout-confirmed__next {
  margin: 0 0 var(--kb-space-32);
  padding: 22px 24px;
  border-radius: var(--kb-radius-3xl);
  background: var(--kb-brand-green-50);
  border: 1px solid var(--kb-brand-green-100);
}

.kb-checkout-confirmed__next-title {
  margin: 0 0 var(--kb-space-14);
  font-size: var(--kb-fs-18);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-green-900);
}

.kb-checkout-confirmed__next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-12);
}

.kb-checkout-confirmed__next-list li {
  display: flex;
  gap: var(--kb-space-12);
  align-items: flex-start;
  font-size: var(--kb-fs-16);
  line-height: var(--kb-lh-body);
  color: var(--kb-text-secondary);
}

.kb-checkout-confirmed__next-list strong {
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-semibold);
}

.kb-checkout-confirmed__next-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--kb-surface-card);
  border: 1.5px solid var(--kb-brand-green-700);
  color: var(--kb-brand-green-900);
  font-size: var(--kb-fs-13);
  font-weight: var(--kb-weight-bold);
}

.kb-checkout-confirmed__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-32);
  align-items: flex-start;
}

.kb-checkout-confirmed__details {
  flex: 999 1 360px;
  min-width: 0;
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.kb-checkout-confirmed__section-title {
  margin: 0;
  font-size: var(--kb-fs-20);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-checkout-confirmed__dl {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.kb-checkout-confirmed__row {
  display: grid;
  grid-template-columns: minmax(7rem, 9rem) 1fr;
  gap: var(--kb-space-12) var(--kb-space-16);
  padding: var(--kb-space-14) 0;
  border-top: 1px solid var(--kb-border-divider);
}

.kb-checkout-confirmed__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.kb-checkout-confirmed__row:last-child {
  padding-bottom: 0;
}

.kb-checkout-confirmed__row dt {
  color: var(--kb-text-muted);
  font-size: var(--kb-fs-15);
  font-weight: var(--kb-weight-medium);
}

.kb-checkout-confirmed__row dd {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-checkout-confirmed__zone {
  font-weight: var(--kb-weight-bold);
}

.kb-checkout-confirmed__badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  min-height: 28px;
  padding: 0 10px;
  border-radius: var(--kb-radius-sm);
  background: var(--kb-brand-green-50);
  border: 1px solid var(--kb-brand-green-100);
  color: var(--kb-brand-green-900);
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-semibold);
}

.kb-checkout-confirmed__ship-phone {
  color: var(--kb-text-secondary);
  font-weight: var(--kb-weight-medium);
}

.kb-checkout-confirmed__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--kb-space-16) var(--kb-space-20);
  padding-top: var(--kb-space-4);
}

.kb-checkout-confirmed__cta {
  min-width: 200px;
  padding: 0 22px;
  text-decoration: none;
}

.kb-checkout-confirmed__help {
  font-size: var(--kb-fs-15);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  min-height: var(--kb-touch);
  display: inline-flex;
  align-items: center;
}

.kb-checkout-confirmed__help:hover {
  color: var(--kb-brand-green-700);
}

.kb-checkout-confirmed .kb-order-summary--checkout {
  position: static;
}

.kb-checkout-page__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-32);
  align-items: flex-start;
}

.kb-checkout-form {
  flex: 999 1 560px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kb-space-24);
}

.kb-checkout-fieldset {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  background: var(--kb-surface-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.kb-checkout-fieldset__legend {
  /* Float keeps the legend inside the card (matches design source / static HTML). */
  float: left;
  width: 100%;
  padding: 0;
  margin: 0 0 6px;
  font-size: var(--kb-fs-20);
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-checkout-fieldset::after {
  content: '';
  display: table;
  clear: both;
}

.kb-checkout-fieldset__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}

.kb-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
  min-width: 0;
}

.kb-field__label {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.kb-field__optional {
  font-weight: var(--kb-weight-regular);
  color: var(--kb-text-muted);
}

.kb-field__control {
  min-height: 48px;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-lg);
  padding: 0 14px;
  font: inherit;
  font-weight: var(--kb-weight-regular);
  color: var(--kb-brand-navy-900);
  background: var(--kb-surface-page);
}

.kb-field__control--textarea {
  min-height: 0;
  padding: 12px 14px;
  resize: vertical;
}

.kb-field__control:focus {
  outline: 2px solid var(--kb-brand-green-700);
  outline-offset: 1px;
}

.kb-field__helper {
  font-weight: var(--kb-weight-regular);
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-field__error {
  margin: 0;
  font-weight: var(--kb-weight-regular);
  font-size: var(--kb-fs-14);
  color: var(--kb-danger);
}

.kb-field--error .kb-field__control {
  border-color: var(--kb-danger);
}

.kb-radio-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.kb-radio-card-grid--payment {
  gap: 14px;
}

.kb-radio-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px;
  border-radius: var(--kb-radius-xl);
  border: 2px solid var(--kb-border-default);
  background: var(--kb-surface-card);
  cursor: pointer;
}

.kb-radio-card:has(.kb-radio-card__input:checked),
.kb-radio-card--selected {
  border-color: var(--kb-brand-green-700);
  background: var(--kb-brand-green-50);
}

.kb-radio-card__input {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  flex: none;
  accent-color: var(--kb-brand-green-700);
}

.kb-radio-card__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.kb-radio-card__title {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-radio-card__desc {
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-regular);
  color: var(--kb-text-secondary);
}

.kb-order-summary--checkout {
  flex: 1 1 340px;
  position: sticky;
  top: var(--kb-space-24);
}

.kb-order-summary__heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--kb-space-12);
}

.kb-order-summary__edit {
  font-weight: var(--kb-weight-semibold);
  font-size: var(--kb-fs-15);
  min-height: var(--kb-touch);
  display: inline-flex;
  align-items: center;
  color: var(--kb-brand-navy-900);
  text-decoration: none;
}

.kb-order-summary__edit:hover {
  color: var(--kb-brand-green-700);
}

.kb-order-summary__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kb-order-summary__item {
  display: flex;
  gap: 14px;
  align-items: center;
}

.kb-order-summary__cover {
  flex: none;
  width: 48px;
  aspect-ratio: 2 / 3;
  border-radius: var(--kb-radius-xs);
  overflow: hidden;
  background: var(--kb-surface-page);
}

.kb-order-summary__cover img,
.kb-order-summary__cover .kb-cover-ph {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kb-order-summary__meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.kb-order-summary__book-title {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary__qty {
  font-size: var(--kb-fs-14);
  color: var(--kb-text-muted);
}

.kb-order-summary__price {
  flex: none;
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary__rows--bordered {
  padding-top: var(--kb-space-16);
  border-top: 1px solid var(--kb-border-default);
}

.kb-order-summary--checkout .kb-order-summary__rows .kb-order-summary__row dd {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-navy-900);
}

.kb-order-summary--checkout .kb-order-summary__delivery,
.kb-order-summary--checkout [data-kb-delivery-fee] {
  font-weight: var(--kb-weight-semibold) !important;
  color: var(--kb-brand-navy-900) !important;
}

.kb-order-summary__total--checkout span:last-child {
  font-size: 26px;
}

.kb-order-summary__cta--submit {
  width: 100%;
  min-height: 54px;
  border: 0;
  border-radius: var(--kb-radius-lg);
  font: inherit;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-18);
  cursor: pointer;
}

.kb-order-summary__cta--submit:disabled {
  opacity: 0.7;
  cursor: wait;
}

.kb-order-summary__terms {
  margin: 0;
  font-size: var(--kb-fs-14);
  line-height: 1.6;
  color: var(--kb-text-muted);
}

.kb-order-summary__terms a {
  color: inherit;
  text-decoration: underline;
}

.kb-order-summary__terms a:hover {
  color: var(--kb-brand-green-700);
}

@media (max-width: 820px) {
  .kb-cart-page {
    padding: var(--kb-space-32) var(--kb-gutter) var(--kb-space-64);
    overflow-x: clip;
  }

  .kb-checkout-header__wordmark {
    font-size: var(--kb-fs-26);
  }

  .kb-page-steps .kb-checkout-steps__line,
  .kb-checkout-steps__line {
    width: 24px;
  }

  .kb-cart-page__title {
    font-size: var(--kb-fs-34);
  }

  .kb-cart-page__title-en {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }

  .kb-checkout-page {
    padding: var(--kb-space-32) var(--kb-gutter) var(--kb-space-64);
  }

  .kb-checkout-page__title {
    font-size: var(--kb-fs-34);
  }

  .kb-checkout-page__title-en {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }

  .kb-checkout-confirmed__hero {
    margin-bottom: var(--kb-space-24);
  }

  .kb-checkout-confirmed__next {
    padding: 18px 20px;
  }

  .kb-checkout-confirmed__row {
    grid-template-columns: 1fr;
    gap: var(--kb-space-4);
  }

  .kb-checkout-confirmed__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .kb-checkout-confirmed__cta {
    width: 100%;
    min-width: 0;
  }

  .kb-checkout-confirmed__help {
    justify-content: center;
  }

  .kb-order-summary--checkout {
    position: static;
    flex: 1 1 100%;
  }

  .kb-cart-page__items {
    padding: var(--kb-space-8) var(--kb-space-20);
  }

  .kb-cart-line--page {
    align-items: flex-start;
  }

  .kb-cart-line--page .kb-qty--cart {
    order: 3;
  }

  .kb-cart-line--page .kb-cart-line__total {
    order: 4;
    width: auto;
    min-width: 88px;
    margin-left: auto;
    align-self: center;
  }
}

@media (max-width: 390px) {
  .kb-checkout-header__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--kb-space-12);
    padding: 14px var(--kb-space-16);
  }

  .kb-checkout-header__wordmark {
    font-size: var(--kb-fs-24);
  }

  .kb-checkout-steps.kb-page-steps {
    margin-bottom: var(--kb-space-32);
  }

  .kb-checkout-steps__line {
    width: 18px;
  }

  .kb-checkout-fieldset__grid {
    grid-template-columns: 1fr;
  }

  .kb-cart-page {
    padding: var(--kb-space-28) var(--kb-gutter) var(--kb-space-56);
  }

  .kb-cart-page__title {
    font-size: var(--kb-fs-30);
  }

  .kb-cart-page__title-en {
    font-size: var(--kb-fs-18);
  }

  .kb-checkout-page {
    padding: var(--kb-space-28) var(--kb-gutter) var(--kb-space-56);
  }

  .kb-checkout-confirmed__icon {
    width: 56px;
    height: 56px;
  }

  .kb-checkout-confirmed__order-chip {
    width: 100%;
  }

  .kb-checkout-confirmed__details {
    padding: 22px 20px;
  }

  .kb-checkout-page__title {
    font-size: var(--kb-fs-30);
  }

  .kb-checkout-page__title-en {
    font-size: var(--kb-fs-18);
  }

  .kb-cart-page__title-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .kb-cart-line--page {
    gap: var(--kb-space-14) var(--kb-space-16);
    padding: var(--kb-space-20) 0;
  }

  .kb-cart-line--page .kb-cart-line__cover {
    width: 72px;
  }

  .kb-cart-line--page .kb-cart-line__details {
    flex: 1 1 calc(100% - 96px);
  }

  .kb-cart-line--page .kb-qty--cart,
  .kb-cart-line--page .kb-cart-line__total {
    margin-top: var(--kb-space-4);
  }

  .kb-order-summary {
    padding: var(--kb-space-22);
  }

  .kb-order-summary__total span:last-child {
    font-size: var(--kb-fs-24);
  }

  .kb-footer-checkout__inner {
    flex-direction: column;
    gap: var(--kb-space-6);
  }
}

@media (max-width: 360px) {
  .kb-cart-page,
  .kb-checkout-root {
    overflow-x: clip;
    max-width: 100vw;
  }
}

/* ── Responsive: SCR-002 + storefront chrome ─────────────────────── */
@media (max-width: 820px) {
  .kb-site-header__row {
    gap: var(--kb-space-12) var(--kb-space-16);
  }

  .kb-category-page__title {
    font-size: var(--kb-fs-34);
  }

  .kb-category-page__body {
    gap: var(--kb-space-24);
  }

  .kb-filters {
    flex: 1 1 100%;
  }

  .kb-category-page__results {
    flex: 1 1 100%;
  }

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

@media (max-width: 640px) {
  .kb-site-header__row {
    flex-wrap: wrap;
  }

  .kb-search {
    order: 3;
    flex: 1 1 100%;
    width: 100%;
  }

  .kb-category-page {
    padding: 20px var(--kb-space-16) var(--kb-space-48);
  }

  .kb-category-page__head {
    flex-direction: column;
    align-items: stretch;
    margin: 12px 0 var(--kb-space-20);
  }

  .kb-category-page__title {
    font-size: var(--kb-fs-30);
  }

  .kb-category-page__title-en {
    font-size: var(--kb-fs-18);
  }

  .kb-sort {
    width: 100%;
    justify-content: space-between;
  }

  .kb-sort__select {
    flex: 1;
    min-width: 0;
  }

  /* Q-008: 2-column cards on phones (design fluid is 1 col at 170px min) */
  .kb-book-grid.kb-book-grid--category {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 36px var(--kb-space-16);
  }

  .kb-pagination__page {
    width: 40px;
    height: 40px;
  }

  .kb-footer-compact__inner {
    padding: var(--kb-space-40) var(--kb-space-16) 24px;
  }
}

@media (max-width: 390px) {
  .kb-category-nav__list {
    gap: 0 18px;
  }

  .kb-category-page__title {
    font-size: var(--kb-fs-28);
  }
}

/* ── SCR-003 Book detail ─────────────────────────────────────────── */
.kb-book-page {
  max-width: var(--kb-container);
  margin: 0 auto;
  padding: 28px var(--kb-gutter) var(--kb-space-72);
}

.kb-book-page__breadcrumb {
  margin-bottom: var(--kb-space-24);
}

.kb-book-product {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-48);
  align-items: flex-start;
}

.kb-book-product__cover-col {
  flex: 1 1 340px;
  max-width: 420px;
}

.kb-book-product__cover {
  position: relative;
  aspect-ratio: 2 / 3;
  border-radius: var(--kb-radius-lg);
  overflow: hidden;
  box-shadow: var(--kb-shadow-book-detail);
  background: var(--kb-surface-sand);
}

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

.kb-book-product__cover .kb-cover-ph {
  border-radius: var(--kb-radius-lg);
  box-shadow: none;
}

.kb-cover-ph--detail {
  justify-content: space-between;
  border-radius: var(--kb-radius-lg);
  padding: 32px 28px;
  box-shadow: none;
}

.kb-cover-ph--detail .kb-cover-ph__title {
  font-size: var(--kb-fs-64);
  line-height: 1.1;
  color: var(--kb-text-on-cover-strong);
  -webkit-line-clamp: 5;
}

.kb-book-product__seal {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 104px;
  height: 104px;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-accent-gold-400);
  color: var(--kb-accent-gold-text);
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-15);
  line-height: 1.3;
  padding: 10px;
  box-sizing: border-box;
}

.kb-book-product__info {
  flex: 1 1 460px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.kb-book-product__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kb-space-8);
}

.kb-chip {
  font-size: var(--kb-fs-13);
  font-weight: var(--kb-weight-semibold);
  padding: 4px 12px;
  border-radius: var(--kb-radius-pill);
}

.kb-chip--award {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-accent-gold-text);
  background: var(--kb-accent-gold-100);
}

.kb-chip--category {
  color: var(--kb-brand-green-900);
  background: var(--kb-brand-green-100);
}

.kb-chip--audiobook {
  color: var(--kb-brand-navy-900);
  background: var(--kb-accent-lavender-100);
}

.kb-book-product__titles {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kb-book-product__title {
  margin: 0;
  font-family: var(--kb-font-display);
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-44);
  line-height: 1.2;
  color: var(--kb-brand-navy-900);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.kb-book-product__title-en {
  font-size: var(--kb-fs-20);
  color: var(--kb-text-secondary);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.kb-book-product__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  padding: 16px 0;
  border-top: 1px solid var(--kb-border-default);
  border-bottom: 1px solid var(--kb-border-default);
}

.kb-book-product__meta-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kb-book-product__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--kb-radius-pill);
  background: var(--kb-brand-navy-900);
  color: #FFFFFF;
  display: grid;
  place-items: center;
  font-weight: var(--kb-weight-bold);
  flex: none;
}

.kb-book-product__meta-stack {
  display: flex;
  flex-direction: column;
}

.kb-book-product__meta-label {
  font-size: var(--kb-fs-13);
  color: var(--kb-text-muted);
}

.kb-book-product__meta-value {
  font-weight: var(--kb-weight-bold);
  color: var(--kb-brand-navy-900);
}

.kb-book-product__lead {
  margin: 0;
  font-size: var(--kb-fs-17);
  line-height: 1.8;
  color: var(--kb-text-body);
}

/* CMP-026 Purchase panel */
.kb-purchase {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-2xl);
  padding: var(--kb-space-24);
}

.kb-purchase__price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.kb-purchase__price {
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-36);
  color: var(--kb-brand-navy-900);
}

.kb-purchase__stock {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-brand-green-900);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.kb-purchase__stock--oos {
  color: var(--kb-feedback-danger-text);
}

.kb-purchase__form {
  display: contents;
}

.kb-purchase__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.kb-qty--large {
  border-radius: var(--kb-radius-lg);
  background: var(--kb-surface-page);
}

.kb-qty--large .kb-qty__btn {
  width: 48px;
  height: 48px;
  font-size: 22px;
  color: var(--kb-brand-navy-900);
}

.kb-qty--large .kb-qty__btn:disabled {
  cursor: default;
  opacity: 1;
}

.kb-qty--large .kb-qty__value {
  min-width: 32px;
  font-size: var(--kb-fs-18);
}

.kb-purchase__add {
  flex: 1 1 180px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  border: 0;
  border-radius: var(--kb-radius-lg);
  background: var(--kb-brand-green-700);
  color: #FFFFFF;
  text-decoration: none;
  font: inherit;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-17);
  cursor: pointer;
}

.kb-purchase__add:hover:not(:disabled) {
  background: var(--kb-brand-green-800);
}

.kb-purchase__add:disabled,
.kb-purchase__buy:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.kb-purchase__buy {
  flex: 1 1 140px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border-radius: var(--kb-radius-lg);
  border: 1.5px solid var(--kb-brand-navy-900);
  color: var(--kb-brand-navy-900);
  text-decoration: none;
  font: inherit;
  font-weight: var(--kb-weight-bold);
  font-size: var(--kb-fs-17);
  background: var(--kb-surface-card);
  cursor: pointer;
}

.kb-purchase__delivery {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: var(--kb-fs-15);
  color: var(--kb-text-secondary);
}

.kb-purchase__delivery-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* CMP-027 Share */
.kb-share {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.kb-share__label {
  font-size: var(--kb-fs-14);
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-text-muted);
}

.kb-share__btn {
  width: 44px;
  height: 44px;
  border-radius: var(--kb-radius-pill);
  border: 1px solid var(--kb-border-default);
  background: var(--kb-surface-card);
  color: var(--kb-brand-navy-900);
  display: grid;
  place-items: center;
  text-decoration: none;
  font: inherit;
  padding: 0;
  cursor: pointer;
}

.kb-share__btn:hover {
  border-color: var(--kb-border-hover);
}

.kb-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* CMP-025 Tabs */
.kb-book-tabs {
  margin-top: var(--kb-space-64);
  background: var(--kb-surface-card);
  border: 1px solid var(--kb-border-default);
  border-radius: var(--kb-radius-3xl);
  overflow: hidden;
}

.kb-book-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 0 20px;
  border-bottom: 1px solid var(--kb-border-default);
}

.kb-book-tabs__tab {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: var(--kb-fs-17);
  font-weight: var(--kb-weight-bold);
  padding: 18px 16px;
  min-height: 56px;
  cursor: pointer;
  color: var(--kb-text-muted);
  box-shadow: none;
}

.kb-book-tabs__tab[aria-selected='true'] {
  color: var(--kb-brand-navy-900);
  box-shadow: var(--kb-shadow-tab-active);
}

.kb-book-tabs__panels {
  padding: var(--kb-space-32);
}

/* No-JS: all panels stacked and visible */
.kb-book-tabs:not(.kb-book-tabs--js) .kb-book-tabs__panel + .kb-book-tabs__panel {
  margin-top: var(--kb-space-32);
  padding-top: var(--kb-space-32);
  border-top: 1px solid var(--kb-border-default);
}

.kb-book-tabs--js .kb-book-tabs__panel[hidden] {
  display: none;
}

.kb-book-tabs__about-p {
  margin: 0 0 1em;
  font-size: var(--kb-fs-17);
  line-height: var(--kb-lh-long);
  color: var(--kb-text-body);
}

.kb-book-tabs__about-p:last-child {
  margin-bottom: 0;
}

.kb-book-tabs__about-p--award {
  font-weight: var(--kb-weight-semibold);
  color: var(--kb-accent-gold-text);
}

.kb-book-tabs__details {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0 32px;
}

.kb-book-tabs__detail-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 8px;
  padding: 14px 0;
  border-bottom: 1px solid var(--kb-border-default);
  font-size: var(--kb-fs-15);
}

.kb-book-tabs__detail-row dt {
  margin: 0;
  color: var(--kb-text-muted);
  font-weight: var(--kb-weight-regular);
}

.kb-book-tabs__detail-row dd {
  margin: 0;
  color: var(--kb-brand-navy-900);
  font-weight: var(--kb-weight-semibold);
}

/* CMP-028 Audiobook YouTube embed */
.kb-audiobook {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: center;
}

.kb-audiobook__player {
  flex: 1 1 420px;
  max-width: 640px;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--kb-radius-xl);
  background: var(--kb-surface-dark-media);
  overflow: hidden;
  position: relative;
}

.kb-audiobook__iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.kb-audiobook__copy {
  flex: 1 1 260px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kb-audiobook__heading {
  margin: 0;
  font-size: var(--kb-fs-20);
  color: var(--kb-brand-navy-900);
}

.kb-audiobook__text {
  margin: 0;
  color: var(--kb-text-secondary);
  line-height: var(--kb-lh-body);
}

.kb-book-related {
  margin-top: var(--kb-space-64);
}

.kb-book-grid--related {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 32px 24px;
}

@media (max-width: 820px) {
  .kb-book-page {
    padding-top: 20px;
  }

  .kb-book-product {
    flex-direction: column;
    gap: var(--kb-space-32);
  }

  .kb-book-product__cover-col {
    max-width: 360px;
    margin: 0 auto;
    width: 100%;
  }

  .kb-book-product__title {
    font-size: var(--kb-fs-36);
  }

  .kb-cover-ph--detail .kb-cover-ph__title {
    font-size: var(--kb-fs-40);
  }

  .kb-purchase__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .kb-purchase__add,
  .kb-purchase__buy {
    flex: 1 1 auto;
    width: 100%;
  }

  .kb-book-tabs__list {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .kb-book-tabs__tab {
    white-space: nowrap;
    flex: none;
  }

  .kb-book-grid--related {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 390px) {
  .kb-book-page {
    padding-left: 16px;
    padding-right: 16px;
  }

  .kb-book-product__cover-col {
    max-width: 280px;
  }

  .kb-book-product__title {
    font-size: var(--kb-fs-30);
  }

  .kb-book-product__meta {
    gap: 12px 20px;
  }

  .kb-purchase {
    padding: var(--kb-space-20);
  }

  .kb-book-tabs__panels {
    padding: var(--kb-space-24) var(--kb-space-16);
  }

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

  .kb-book-grid--related {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 16px;
  }
}

@media (max-width: 360px) {
  .kb-book-page {
    overflow-x: clip;
  }

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

/* Focus rings last (after Bootstrap) — SCR-002 / SCR-003 / SCR-004 keyboard targets */
.kb-filters__clear:focus,
.kb-filters__check input:focus,
.kb-filters__price-field input:focus,
.kb-filter-chip__remove:focus,
.kb-pagination a:focus,
.kb-sort__select:focus,
.kb-book-card__add:focus,
.kb-filters__apply:focus,
.kb-qty__btn:focus,
.kb-purchase__add:focus,
.kb-purchase__buy:focus,
.kb-share__btn:focus,
.kb-book-tabs__tab:focus,
.kb-checkout-header__logo:focus,
.kb-checkout-header__help:focus,
.kb-checkout-steps__link:focus,
.kb-cart-page__continue:focus,
.kb-cart-line__remove:focus,
.kb-cart-line__title:focus,
.kb-order-summary__cta:focus,
.kb-cart-empty__btn:focus,
.kb-footer-checkout a:focus,
.kb-filters__clear.kb-is-focused,
.kb-filters__check input.kb-is-focused,
.kb-filters__price-field input.kb-is-focused,
.kb-filter-chip__remove.kb-is-focused,
.kb-pagination a.kb-is-focused,
.kb-sort__select.kb-is-focused,
.kb-book-card__add.kb-is-focused,
.kb-filters__apply.kb-is-focused,
.kb-qty__btn.kb-is-focused,
.kb-purchase__add.kb-is-focused,
.kb-purchase__buy.kb-is-focused,
.kb-share__btn.kb-is-focused,
.kb-book-tabs__tab.kb-is-focused,
.kb-checkout-header__logo.kb-is-focused,
.kb-checkout-header__help.kb-is-focused,
.kb-checkout-steps__link.kb-is-focused,
.kb-cart-page__continue.kb-is-focused,
.kb-cart-line__remove.kb-is-focused,
.kb-cart-line__title.kb-is-focused,
.kb-order-summary__cta.kb-is-focused,
.kb-cart-empty__btn.kb-is-focused,
.kb-footer-checkout a.kb-is-focused {
  outline-width: 2px !important;
  outline-style: solid !important;
  outline-color: var(--kb-brand-navy-900) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 2px var(--kb-surface-page) !important;
}