/**
 * Letter hub — above-fold 75/25 stage+strip; aligned header shell.
 */

[data-testid="hub-seo-members"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body.kz-letter-hub-page {
  /* Align hub stage + header to shared theme chrome (--kz-chrome-width: 90%). */
  --kz-hub-shell-width: var(--kz-chrome-width, 90%);
  --kz-hub-shell-max: var(--kz-chrome-width, 90%);
  --kz-hub-pad-x: clamp(0.75rem, 2vw, 1.25rem);
  --kz-paper: #eaf6ee;
  --kz-ink: #16324a;
  --kz-terracotta: #c45c26;
  --kz-gold: #f5c400;
  --kz-sky: #e8f4fc;
  --kz-mint: #b7e4c0;
  /* Superfly sets body overflow-x:hidden, which breaks position:sticky headers. */
  overflow-x: clip !important;
  background: var(--kz-paper);
  color: var(--kz-ink);
}

body.kz-letter-hub-page .kz-site-header,
body.kz-letter-hub-page .kz-site-header::before,
body.kz-letter-hub-page .wp-site-blocks > .wp-block-template-part:has(.kz-site-header),
body.kz-letter-hub-page .wp-site-blocks > header.wp-block-template-part {
  background: rgba(255, 255, 255, 0.92);
}

body.kz-letter-hub-page .wp-block-post-title,
body.kz-letter-hub-page main > .wp-block-post-title,
body.kz-letter-hub-page .entry-title {
  display: none !important;
}

body.kz-letter-hub-page .entry-content,
body.kz-letter-hub-page .wp-block-post-content,
body.kz-letter-hub-page .wp-block-group.is-layout-constrained > .kz-letter-hub,
body.kz-letter-hub-page main .kz-letter-hub {
  max-width: var(--kz-hub-shell-max, var(--kz-chrome-width, 90%)) !important;
  width: var(--kz-hub-shell-width, var(--kz-chrome-width, 90%)) !important;
  margin-left: auto !important;
  margin-right: auto !important;
  margin-top: 0 !important;
}

body.kz-letter-hub-page .is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) {
  max-width: none;
}

body.kz-letter-hub-page main.wp-block-group,
body.kz-letter-hub-page .kz-main-content,
body.kz-letter-hub-page main#kz-main-content,
body.kz-letter-hub-page main {
  padding-top: 0 !important;
  padding-bottom: 0.35rem !important;
  margin-top: 0 !important;
}

body.kz-letter-hub-page .kz-breadcrumbs {
	width: var(--kz-hub-shell-width, var(--kz-chrome-width, 90%));
	max-width: var(--kz-hub-shell-max, var(--kz-chrome-width, 90%));
	margin-left: auto;
	margin-right: auto;
	margin-bottom: 0.35rem;
	padding-left: var(--kz-hub-pad-x, 0.75rem);
	padding-right: var(--kz-hub-pad-x, 0.75rem);
	box-sizing: border-box;
}

/* Header width comes from theme --kz-chrome-width (90%). Hub only trims padding. */
body.kz-letter-hub-page .kz-site-header,
body.kz-letter-hub-page header.kz-site-header.wp-block-group {
  padding: 0.1rem var(--kz-hub-pad-x) 0 !important;
  box-sizing: border-box;
  min-height: 0;
}

body.kz-letter-hub-page .kz-site-header__bar {
  min-height: 2rem;
  justify-content: flex-start !important;
  gap: 0.5rem !important;
}

body.kz-letter-hub-page .kz-site-header .kz-brand {
  flex: 0 0 auto !important;
  width: auto !important;
  max-width: none !important;
}

body.kz-letter-hub-page .kz-site-header .kz-site-nav,
body.kz-letter-hub-page .kz-site-nav {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  margin-inline: 0.15rem 0.35rem !important;
  max-width: none !important;
}

body.kz-letter-hub-page .kz-site-nav__list {
  justify-content: space-evenly !important;
  overflow-x: auto;
  max-width: 100%;
  width: 100%;
}

body.kz-letter-hub-page .kz-sheet__header-actions {
  flex: 0 0 auto;
  margin-left: auto;
}

body.kz-letter-hub-page .kz-site-header .kz-grade-nav__list,
body.kz-letter-hub-page .kz-grade-nav__list {
  display: flex !important;
  flex-wrap: nowrap;
  justify-content: stretch;
  gap: 0.4rem;
  width: 100%;
  max-width: none;
  padding: 0.15rem 0 0.2rem;
  box-sizing: border-box;
}

body.kz-letter-hub-page .kz-site-header .kz-grade-nav__list > li,
body.kz-letter-hub-page .kz-grade-nav__list > li {
  flex: 1 1 0;
  min-width: 0;
  list-style: none;
}

body.kz-letter-hub-page .kz-site-header .kz-grade-nav__link,
body.kz-letter-hub-page .kz-grade-nav__link {
  display: flex !important;
  width: 100%;
  flex: 1 1 auto;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  padding: 0.4rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 800;
  box-sizing: border-box;
}

body.kz-letter-hub-page .kz-site-header .kz-grade-nav__icon {
  display: none;
}

.kz-letter-hub {
  --kz-hub-accent: #c45c26;
  --kz-hub-accent-soft: #f8efe8;
  --kz-hub-accent-border: #e8cbb8;
  --kz-hub-ink: #1c1917;
  box-sizing: border-box;
  width: var(--kz-hub-shell-width, var(--kz-chrome-width, 90%));
  max-width: var(--kz-hub-shell-max, var(--kz-chrome-width, 90%));
  margin: 0 auto;
  padding: 0.15rem var(--kz-hub-pad-x, clamp(0.75rem, 2vw, 1.25rem)) 0.5rem;
  color: var(--kz-hub-ink);
}

.kz-letter-hub__header {
  margin: 0 0 0.15rem;
}

.kz-letter-hub__heading {
  margin: 0 0 0.1rem;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  font-weight: 800;
  line-height: 1.15;
}

.kz-letter-hub__heading-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.65rem;
  margin: 0 0 0.1rem;
}

.kz-letter-hub__heading-row .kz-letter-hub__heading {
  margin: 0;
}

.kz-letter-hub__grade-hint {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.25;
  color: #64748b;
  pointer-events: none;
}

.kz-letter-hub__intro {
  margin: 0;
  color: #334155;
  font-size: 0.75rem;
  line-height: 1.28;
  width: 100%;
  max-width: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kz-letter-hub__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.25rem;
}

.kz-letter-hub__ppp-hint {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  line-height: 1.4;
  color: #475569;
}

/* Grade filter row removed from hub chrome — hide if legacy markup remains. */
.kz-letter-hub__grade-filters {
  display: none !important;
}

.kz-letter-hub__filter {
  min-height: 36px;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
  background: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
}

.kz-letter-hub__filter.is-active {
  background: #1d4ed8;
  border-color: #1d4ed8;
  color: #fff;
}

.kz-letter-hub__count {
  font-weight: 800;
  opacity: 0.9;
  margin-left: 0.1rem;
}

.kz-letter-hub[data-letter-split="1"] .kz-letter-hub__filter {
  min-width: 2.1rem;
  padding: 0.2rem 0.45rem;
}

.kz-letter-hub__grades {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 0.25rem;
}

.kz-letter-hub__grade {
  appearance: none;
  border: 1px solid #cbd5e1;
  background: #fff;
  color: #334155;
  border-radius: 999px;
  min-height: 32px;
  padding: 0.25rem 0.7rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.kz-letter-hub__grade.is-active {
  background: #0f172a;
  border-color: #0f172a;
  color: #fff;
}

.kz-letter-hub__rail-tier,
.kz-letter-hub__rail-meter {
  margin: 0.15rem 0 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: #0f172a;
}

.kz-letter-hub__rail-meter {
  font-weight: 600;
  color: #475569;
}

.kz-letter-hub__mobile-facts {
  display: none;
}

/* Above-fold lock / download CTA — sits before stage+rail so messaging is visible first. */
.kz-letter-hub__cta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.65rem;
  padding: 0.45rem 0.75rem;
  margin: 0 0 0.35rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  background: #fff;
  min-height: 2.75rem;
  box-sizing: border-box;
}

.kz-letter-hub__cta-bar[hidden] {
  /* Collapse when unused so grades sit next to the stage (no reserved empty bar). */
  display: none !important;
}

.kz-letter-hub__cta-bar.is-locked {
  background: var(--kz-hub-accent-soft, #f1f5f9);
  border-color: var(--kz-hub-accent-border, #cbd5e1);
  position: sticky;
  top: 0;
  z-index: 6;
}

.kz-letter-hub__cta-bar-msg,
.kz-letter-hub__lock-note {
  flex: 1 1 11rem;
  margin: 0;
  font-size: 0.9rem;
  font-weight: 650;
  line-height: 1.35;
  color: #334155;
}

.kz-letter-hub__cta-bar .kz-btn,
.kz-letter-hub__rail-actions .kz-btn {
  flex: 0 0 auto;
}

.kz-letter-hub__cta-bar .kz-btn--ghost,
.kz-letter-hub__rail-actions .kz-btn--ghost {
  background: #fff;
  color: #334155;
  border: 1px solid #cbd5e1;
}

/* Soft lock overlay — primary freemium CTA; never hard-blank the stage. */
.kz-hub-soft-overlay {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.45);
  box-sizing: border-box;
}

.kz-hub-soft-overlay[hidden] {
  display: none !important;
}

.kz-hub-soft-overlay__card {
  width: min(100%, 22rem);
  padding: 1.25rem 1.35rem;
  border-radius: 0.85rem;
  background: #fff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.18);
}

.kz-hub-soft-overlay__title {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
  font-weight: 750;
  line-height: 1.3;
  color: #0f172a;
}

.kz-hub-soft-overlay__msg {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.45;
  color: #475569;
}

.kz-hub-soft-overlay__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.kz-hub-soft-overlay__actions .kz-btn {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.4rem 0.85rem;
  border: 0;
  border-radius: 999px;
  background: var(--kz-hub-accent, #ea580c);
  color: #fff;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  font-size: 0.95rem;
}

.kz-hub-soft-overlay__actions .kz-btn--ghost {
  background: #fff;
  color: #0f172a;
  border: 1px solid #cbd5e1;
}

/* Body fills remaining viewport: stage+strip | rail — leave room for related slider. */
.kz-letter-hub__body {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(12rem, 1fr);
  gap: 0.55rem;
  align-items: stretch;
  height: min(64vh, 36rem);
  min-height: 22rem;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.kz-letter-hub__body--play {
  height: min(calc(100vh - 18.75rem), 36rem);
}

/* Entitled Play: one full-width stage, no right-rail column. */
.kz-letter-hub__play-bar {
  display: none;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding: 0.15rem 0.1rem 0.2rem;
  min-width: 0;
}

.kz-letter-hub__play-bar:not([hidden]) {
  display: flex;
}

.kz-letter-hub__play-bar-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.25;
  color: #0f172a;
  min-width: 0;
}

.kz-letter-hub__play-bar-meta {
  font-size: 0.82rem;
  font-weight: 650;
  color: #475569;
  white-space: nowrap;
}

.kz-letter-hub__body--play-wide {
  grid-template-columns: minmax(0, 1fr);
  height: auto;
  min-height: 0;
}

.kz-letter-hub__body--play-wide .kz-letter-hub__rail {
  display: none;
}

.kz-letter-hub__body--play-wide .kz-letter-hub__main {
  overflow: visible;
  grid-template-rows: minmax(min(76vh, 44rem), 1fr) minmax(10.5rem, 12.75rem);
}

.kz-letter-hub__body--play-wide .kz-letter-hub__stage,
.kz-letter-hub__body--play-wide .kz-letter-hub__play-frame {
  overflow: auto;
  min-height: min(76vh, 44rem);
  max-height: none;
}

.kz-letter-hub__body--play-wide .kz-letter-hub__play {
  overflow: auto;
}

.kz-letter-hub__body--play-wide .kz-letter-hub__stage-inner {
  align-items: stretch;
  justify-content: stretch;
}

@media (max-width: 900px) {
  .kz-letter-hub__body {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 22rem;
  }

  .kz-letter-hub__body--play {
    height: auto;
    min-height: 28rem;
  }

  .kz-letter-hub__body--play-wide {
    min-height: 0;
  }

  .kz-letter-hub__body--play-wide .kz-letter-hub__main {
    grid-template-rows: minmax(38rem, 1fr) minmax(10.5rem, 12.75rem);
  }

  .kz-letter-hub__body--play-wide .kz-letter-hub__stage,
  .kz-letter-hub__body--play-wide .kz-letter-hub__play-frame {
    min-height: 38rem;
    max-height: none;
  }

  .kz-letter-hub__mobile-facts {
    display: block;
    margin: 0 0 0.4rem;
    padding: 0.45rem 0.65rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.65rem;
    background: #fff;
    font-size: 0.82rem;
    font-weight: 650;
    line-height: 1.35;
    color: #334155;
  }

  /* Play-wide: howto lives in the game — do not steal the stage grid row. */
  .kz-letter-hub__body--play-wide .kz-letter-hub__mobile-facts {
    display: none !important;
  }

  .kz-letter-hub__mobile-facts[hidden] {
    display: none;
  }

  .kz-letter-hub__body:not(.kz-letter-hub__body--play-wide) .kz-letter-hub__main {
    grid-template-rows: auto auto auto;
  }

  .kz-letter-hub__body:not(.kz-letter-hub__body--play-wide) .kz-letter-hub__stage {
    grid-row: 1;
  }

  .kz-letter-hub__body:not(.kz-letter-hub__body--play-wide) .kz-letter-hub__mobile-facts {
    grid-row: 2;
    align-self: start;
    height: auto;
    max-height: none;
  }

  .kz-letter-hub__body:not(.kz-letter-hub__body--play-wide) .kz-letter-hub__strip {
    grid-row: 3;
  }

  .kz-letter-hub__filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .kz-letter-hub__filter {
    flex: 0 0 auto;
  }

  /* On small screens, put rail (title + CTAs) above the stage when locked. */
  .kz-letter-hub__body.is-locked-item .kz-letter-hub__rail {
    order: -1;
  }

  .kz-letter-hub__play-frame,
  .kz-letter-hub__stage:not(.kz-letter-hub__stage--play) {
    min-height: 16rem;
    max-height: 22rem;
    background-position: center 72%;
  }

  .kz-compare-row,
  .kz-show-grid,
  .kz-num-match__choices {
    min-height: 5rem;
  }

  .kz-letter-hub__stage-crop {
    min-height: 12rem;
    aspect-ratio: auto;
    padding: 0.65rem;
  }

  .kz-letter-hub__stage-img {
    max-height: 16rem;
  }
}

.kz-letter-hub__main {
  display: grid;
  /* Stage first; strip holds 4:3 photo-cards + titles + ‹ › nav. */
  grid-template-rows: minmax(0, 2.85fr) minmax(12.5rem, 1fr);
  gap: 0.45rem;
  min-width: 0;
  min-height: 0;
  width: 100%;
  max-width: 100%;
  border: 0;
  border-radius: 1.35rem;
  background: transparent;
  padding: 0;
  overflow: hidden;
}

.kz-letter-hub__body--play .kz-letter-hub__main {
  grid-template-rows: minmax(12rem, 1fr) 12.75rem;
}

.kz-letter-hub__stage {
  min-width: 0;
  min-height: 0;
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.kz-letter-hub__play-frame,
.kz-letter-hub__stage:not(.kz-letter-hub__stage--play) {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-radius: 1.35rem;
  border: 6px solid var(--kz-mint, #b7e4c0);
  background-color: #d7f0e2;
  background-image: var(--kz-hub-forest, url("../illustrations/hub-forest.jpg"));
  background-size: cover;
  background-position: center;
  overflow: hidden;
  box-sizing: border-box;
  box-shadow: 0 12px 28px rgba(22, 50, 74, 0.12);
}

@media (max-width: 900px) {
  .kz-letter-hub__play-frame,
  .kz-letter-hub__stage:not(.kz-letter-hub__stage--play) {
    background-position: center 72%;
    background-image: url("../illustrations/hub-forest-960.webp");
    background-image: image-set(
      url("../illustrations/hub-forest-480.webp") 1x,
      url("../illustrations/hub-forest-960.webp") 2x
    );
  }
}

.kz-letter-hub__peek {
  display: none;
}

.kz-letter-hub__play-frame .kz-letter-hub__stage-inner {
  padding: 0.35rem 0.35rem 0.35rem;
}

.kz-letter-hub__stage-placeholder {
  text-align: center;
  color: #64748b;
  font-weight: 700;
  padding: 0.5rem;
  font-size: 0.9rem;
}

.kz-letter-hub__stage-inner {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 0;
}

.kz-letter-hub__stage-crop {
  width: 100%;
  height: 100%;
  min-height: 14rem;
  aspect-ratio: 4 / 3;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  padding: 0.85rem 0.85rem 1.1rem;
  box-sizing: border-box;
  text-align: center;
}

.kz-letter-hub__stage-img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center center;
  border-radius: 1rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.18);
}

.kz-letter-hub__play-pending {
  min-height: 16rem;
  width: 100%;
}

.kz-letter-hub__play .kz-game-pic {
  max-width: min(5.5rem, 28vw);
  max-height: min(5.5rem, 28vw);
  width: auto;
  height: auto;
  object-fit: contain;
}

.kz-letter-hub__play {
  width: 100%;
  height: 100%;
  max-width: none;
  margin: 0;
  overflow: hidden;
  padding: 0.2rem;
  box-sizing: border-box;
}

.kz-letter-hub__play:has(.kz-fill) {
  overflow: auto;
}

.kz-letter-hub__play .kz-shoot-mount,
.kz-letter-hub__play .kz-shoot {
  width: 100%;
  height: 100%;
  min-height: 100%;
}

.kz-letter-hub__play .kz-find-mount,
.kz-letter-hub__play .kz-find,
.kz-letter-hub__play .kz-paint-mount,
.kz-letter-hub__play .kz-paint {
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.kz-letter-hub__play .kz-game,
.kz-letter-hub__play .kz-play-engine {
  min-height: 12rem;
  max-width: 40rem;
  margin: 0 auto;
}

.kz-letter-hub__stage-inner iframe {
  width: 100%;
  height: 100%;
  min-height: 12rem;
  border: 0;
  border-radius: 0.5rem;
  background: #fff;
}

.kz-letter-hub__related {
  margin-top: 4.5rem;
  padding: 1.75rem 0.15rem 0.85rem;
  border-top: 1px solid #dbe3ec;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.kz-letter-hub__below {
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.kz-letter-hub__rail-block {
  border: 0;
  border-radius: 1rem;
  background: transparent;
  padding: 0.35rem 0.15rem 0.45rem;
}

.kz-letter-hub__rail-block-head {
  margin-bottom: 0.3rem;
  padding: 0 0.15rem;
}

.kz-letter-hub__rail-block-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 800;
}

.kz-letter-hub__rail-block-row {
  display: flex;
  align-items: stretch;
  gap: 0.25rem;
}

.kz-letter-hub__rail-block-viewport {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: thin;
}

.kz-letter-hub__rail-cards {
  list-style: none;
  margin: 0;
  padding: 0.1rem;
  display: flex;
  flex-wrap: nowrap;
  gap: 0.55rem;
}

.kz-letter-hub__rail-card {
  flex: 0 0 7.5rem;
  width: 7.5rem;
}

.kz-letter-hub__rail-card-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 0.3rem;
  background: #fff;
  min-height: 100%;
}

.kz-letter-hub__rail-card-thumb {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: 0.35rem;
  overflow: hidden;
  background: #fffdf6;
}

.kz-letter-hub__rail-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

.kz-letter-hub__rail-card-title {
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kz-letter-hub__rail {
  border: 0;
  border-radius: 1.35rem;
  background: #fffdf6;
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-height: 0;
  overflow: auto;
  box-shadow: 0 12px 28px rgba(22, 50, 74, 0.1);
}

.kz-letter-hub__rail-domain {
  margin: 0;
  display: inline-flex;
  align-self: flex-start;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: #e0e7ff;
  color: #1e3a8a;
  font-size: 0.7rem;
  font-weight: 800;
  order: 0;
}

.kz-letter-hub__rail-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.25;
  order: 1;
  color: #16324a;
  font-family: var(--wp--preset--font-family--heading, Nunito, system-ui, sans-serif);
}

.kz-letter-hub__rail-howto,
.kz-letter-hub__rail-excerpt {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.4;
  color: #334155;
  order: 2;
}

.kz-letter-hub__rail-excerpt {
  color: #64748b;
  font-size: 0.8rem;
  order: 3;
}

.kz-letter-hub__rail-actions {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.15rem;
  order: 4;
}

.kz-letter-hub__share {
  order: 5;
}

.kz-letter-hub__rail-actions .kz-btn {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--kz-hub-accent);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  padding: 0.35rem 0.7rem;
  text-align: center;
  text-decoration: none;
  font-size: 0.95rem;
}

.kz-letter-hub__cta-bar .kz-btn {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--kz-hub-accent, #5b7c99);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  padding: 0.35rem 0.85rem;
  text-align: center;
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.kz-letter-hub__rail-actions .kz-btn--download,
.kz-letter-hub__cta-bar .kz-btn--download {
  background: #fff;
  color: #1b7a3a;
  border: 2px solid #3cb54a;
  box-shadow: none;
}

.kz-letter-hub__rail-actions .kz-btn--play,
.kz-letter-hub__cta-bar .kz-btn--play {
  background: var(--kz-gold, #f5c400);
  color: #16324a;
  box-shadow: 0 5px 0 #d4a400;
}

.kz-letter-hub__stage-crop--locked {
  opacity: 0.92;
}

.kz-letter-hub__rail-actions .kz-btn--ghost,
.kz-letter-hub__cta-bar .kz-btn--ghost {
  background: #fff;
  color: #334155;
  border: 1px solid #cbd5e1;
}

.kz-letter-hub__lock-note {
  color: #475569;
  font-weight: 600;
}

.kz-letter-hub__rail-domain[hidden],
.kz-letter-hub__rail-excerpt[hidden] {
  display: none !important;
}

/* Domain strip inside main (~25%) */
.kz-letter-hub__strip {
  min-width: 0;
  min-height: 12.5rem;
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  background: #fffdf6;
  border-radius: 1.1rem;
  border: 0;
  padding: 0.45rem 0.5rem 0.5rem;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(22, 50, 74, 0.08);
}

.kz-letter-hub__strip-hint {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 800;
  color: #64748b;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0 0.15rem;
}

.kz-letter-hub__load-more {
  align-self: center;
  margin: 0.35rem 0 0.15rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  background: #fff;
  color: #334155;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

.kz-letter-hub__load-more:hover {
  border-color: #94a3b8;
  background: #f8fafc;
}

.kz-letter-hub__load-more:disabled {
  opacity: 0.55;
  cursor: wait;
}

.kz-letter-hub__load-more[hidden] {
  display: none !important;
}

.kz-letter-hub__strip-row {
  display: flex;
  align-items: stretch;
  gap: 0.25rem;
  min-width: 0;
  min-height: 8.35rem;
  width: 100%;
  max-width: 100%;
  flex: 1;
  overflow: hidden;
}

.kz-letter-hub__strip-viewport {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
}

.kz-letter-hub__strip-nav {
  flex: 0 0 2rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.45rem;
  background: #fff;
  color: #1d4ed8;
  font-size: 1.35rem;
  font-weight: 800;
  cursor: pointer;
  line-height: 1;
}

.kz-letter-hub__strip-nav[hidden] {
  display: none !important;
}

.kz-letter-hub__strip-nav:hover,
.kz-letter-hub__strip-nav:focus-visible {
  background: #eff6ff;
  outline: 2px solid #bfdbfe;
}

.kz-letter-hub__tiles {
  list-style: none;
  margin: 0;
  padding: 0.1rem;
  display: flex;
  flex-wrap: nowrap;
  gap: 0.55rem;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  height: auto;
  min-height: 8.15rem;
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  align-items: flex-start;
}

.kz-letter-hub__tiles::-webkit-scrollbar {
  display: none;
}

.kz-letter-hub__tile {
  flex: 0 0 7.5rem;
  width: 7.5rem;
  max-width: 7.5rem;
}

.kz-letter-hub__tile.is-selected .kz-letter-hub__tile-btn {
  border-color: #1d4ed8;
  box-shadow: 0 0 0 2px #bfdbfe;
}

.kz-letter-hub__tile-btn {
  width: 100%;
  height: auto;
  min-height: 100%;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  background: #fff;
  padding: 0.3rem;
  cursor: pointer;
  text-align: left;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: inherit;
  text-decoration: none;
}

.kz-letter-hub__tile-btn:hover,
.kz-letter-hub__tile-btn:focus-visible {
  border-color: #93c5fd;
  outline: 2px solid #bfdbfe;
}

.kz-letter-hub__thumb {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: 0.35rem;
  background: #fffdf6;
  overflow: hidden;
}

.kz-letter-hub__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

.kz-letter-hub__thumb--empty {
  background: repeating-linear-gradient(
    -45deg,
    #f8fafc,
    #f8fafc 8px,
    #e2e8f0 8px,
    #e2e8f0 16px
  );
}

.kz-letter-hub__tile-meta {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  padding: 0 0.05rem;
}

.kz-letter-hub__tile-domain {
  display: none;
}

.kz-letter-hub__tile-title {
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.25;
  color: #0f172a;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kz-letter-hub__tile.is-locked .kz-letter-hub__tile-btn {
  /* Soft lock: keep tile fully inviting — no disabled dim. */
  opacity: 1;
}

/* Soft ghost lock — quiet outline, not a bold filled badge. */
.kz-letter-hub__lock {
  position: absolute;
  top: 0.3rem;
  right: 0.3rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 0;
  background: transparent
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='11' width='14' height='10' rx='2'/%3E%3Cpath d='M8 11V7a4 4 0 018 0v4'/%3E%3C/svg%3E")
    center / contain no-repeat;
  opacity: 0.55;
  pointer-events: none;
  z-index: 1;
}

.kz-letter-hub__tile:hover .kz-letter-hub__lock,
.kz-letter-hub__tile:focus-within .kz-letter-hub__lock {
  opacity: 0.72;
}

.kz-letter-hub__tile.is-hidden {
  display: none !important;
}

.kz-letter-hub__empty {
  flex: 0 0 auto;
  padding: 0.75rem 1rem;
  text-align: center;
  color: #64748b;
  font-weight: 700;
  font-size: 0.8rem;
  white-space: nowrap;
}

.kz-letter-hub__share {
  margin-top: 0.65rem;
  padding-top: 0.55rem;
  border-top: 1px solid #e2e8f0;
}

.kz-letter-hub__share[hidden] {
  display: none !important;
}

.kz-letter-hub__share-label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #64748b;
}

.kz-letter-hub__share-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.kz-letter-hub__share-links a,
.kz-letter-hub__share-links .kz-share-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  padding: 0;
  margin: 0;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0;
  color: #fff;
  line-height: 1;
  box-sizing: border-box;
}

.kz-share-icon__img {
  display: block;
  width: 18px;
  height: 18px;
  object-fit: contain;
  pointer-events: none;
}

.kz-share-icon--facebook {
  background: #1877f2;
}

.kz-share-icon--pinterest {
  background: #e60023;
}

.kz-share-icon--whatsapp {
  background: #25d366;
}

.kz-share-icon--instagram {
  background: linear-gradient(135deg, #f58529 0%, #dd2a7b 50%, #8134af 100%);
}

.kz-share-icon.is-copied {
  outline: 2px solid #0f766e;
  outline-offset: 2px;
}

.kz-letter-hub__share-links a:hover,
.kz-letter-hub__share-links a:focus-visible,
.kz-letter-hub__share-links .kz-share-icon:hover,
.kz-letter-hub__share-links .kz-share-icon:focus-visible {
  text-decoration: none;
  filter: brightness(1.08);
  outline: 2px solid #bfdbfe;
  outline-offset: 2px;
}

/*
 * Phone: the shell rule above caps .entry-content AND the .kz-letter-hub inside
 * it at 90%, on top of main's side padding — the stage ended up ~65% of the
 * screen and clipped Play/Reset. Keep one 90% shell (aligned with the header)
 * and let the hub fill it.
 */
@media (max-width: 600px) {
  body.kz-letter-hub-page main.wp-block-group,
  body.kz-letter-hub-page main {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  body.kz-letter-hub-page .wp-block-post-content.entry-content > .kz-letter-hub,
  body.kz-letter-hub-page .wp-block-group.is-layout-constrained > .kz-letter-hub.kz-letter-hub {
    width: 100% !important;
    max-width: 100% !important;
  }
}

/* Page-level Jetpack/WP.com share + likes sit below the hub — hide; share is in-rail. */
body.kz-letter-hub-page .sharedaddy,
body.kz-letter-hub-page .sd-sharing,
body.kz-letter-hub-page .sd-like,
body.kz-letter-hub-page .wpl-likebox,
body.kz-letter-hub-page .jp-relatedposts,
body.kz-letter-hub-page .sharedaddy.sd-like-enabled {
  display: none !important;
}