@import url('../shared/tokens.css');

/* ============================================================
   Variation 2 — CHANNELS
   Video-forward learning network. Topic shelves + featured player.
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100%;
  background: var(--ks-peach);
  color: var(--ks-ink);
  font-family: var(--ks-font-body);
  font-weight: var(--ks-weight-bold);
  font-size: var(--ks-text-body-m);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

:focus { outline: none; }
:focus-visible { box-shadow: var(--ks-focus-ring); }

.ks-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;
}

/* ---------- Layout ---------- */
.wrap {
  width: min(100% - var(--ks-space-5) * 2, var(--ks-container-app));
  margin-inline: auto;
}

.reading {
  width: min(100%, var(--ks-container-reading));
  margin-inline: auto;
}

/* ---------- Buttons / tags / cards (from components-reference) ---------- */
.ks-btn {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ks-space-2);
  padding: 0 26px;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  box-shadow: var(--ks-shadow-button);
  font-family: var(--ks-font-body);
  font-weight: var(--ks-weight-black);
  font-size: 16px;
  cursor: pointer;
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease;
}
.ks-btn:hover { transform: translate(-2px, -2px); box-shadow: var(--ks-shadow-hover); }
.ks-btn:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.ks-btn:focus-visible { outline: none; box-shadow: var(--ks-shadow-button), var(--ks-focus-ring); }
.ks-btn--flame { background: var(--ks-flame); color: var(--ks-ink); }
.ks-btn--blue  { background: var(--ks-blue);  color: #fff; }
.ks-btn--paper { background: var(--ks-paper); color: var(--ks-ink); }
.ks-btn--haze  { background: var(--ks-haze);  color: var(--ks-ink); }

.ks-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--ks-font-mono);
  font-size: 11px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: var(--ks-mono-tracking);
  text-transform: uppercase;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  padding: 8px 13px;
  box-shadow: var(--ks-shadow-button);
  background: var(--ks-paper);
  color: var(--ks-ink);
}
.ks-tag--watch { background: var(--ks-blue); color: #fff; }
.ks-tag--read  { background: var(--ks-sunflower); color: var(--ks-ink); }
.ks-tag--see   { background: var(--ks-pulse); color: var(--ks-ink); }
.ks-tag--listen { background: var(--ks-moss); color: var(--ks-ink); }

.ks-card {
  background: var(--ks-paper);
  border: var(--ks-border);
  border-radius: var(--ks-radius-lg);
  padding: var(--ks-space-6);
  box-shadow: var(--ks-shadow-card);
}
.ks-card--sunflower { background: var(--ks-sunflower); color: var(--ks-ink); }
.ks-card--moss      { background: var(--ks-moss); color: var(--ks-ink); }
.ks-card--blue      { background: var(--ks-blue); color: #fff; }
.ks-card--pulse     { background: var(--ks-pulse); color: var(--ks-ink); }
.ks-card--flame     { background: var(--ks-flame); color: var(--ks-ink); }
.ks-card--haze      { background: var(--ks-haze); color: var(--ks-ink); }

.ks-eyebrow {
  font-family: var(--ks-font-mono);
  font-size: 11px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ks-ink-60);
}

.ks-section-head {
  display: flex;
  align-items: center;
  gap: var(--ks-space-4);
  flex-wrap: wrap;
  margin-bottom: var(--ks-space-6);
}
.ks-section-num {
  font-family: var(--ks-font-display);
  font-size: 15px;
  background: var(--ks-ink);
  color: #fff;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  padding: 7px 15px;
}
.ks-section-title {
  font-family: var(--ks-font-display);
  font-size: clamp(32px, 7vw, 56px);
  line-height: .82;
  letter-spacing: -.07em;
  text-transform: uppercase;
  margin: 0;
}

.ks-display {
  font-family: var(--ks-font-display);
  text-transform: uppercase;
  letter-spacing: var(--ks-display-tracking);
  line-height: var(--ks-display-leading);
  margin: 0;
}

.ks-progress-track {
  height: 14px;
  background: var(--ks-haze);
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  overflow: hidden;
}
.ks-progress-fill {
  height: 100%;
  background: var(--ks-moss);
  border-right: var(--ks-border);
  width: 18%;
  transition: width var(--ks-dur-base) var(--ks-ease);
}
.is-playing .ks-progress-fill { width: 42%; }

.ks-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 13px;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  box-shadow: var(--ks-shadow-sm);
  font-family: var(--ks-font-body);
  font-size: 12px;
  font-weight: var(--ks-weight-black);
  white-space: nowrap;
  background: var(--ks-paper);
  color: var(--ks-ink);
}
.ks-badge--ink  { background: var(--ks-ink); color: #fff; }
.ks-badge--blue { background: var(--ks-blue); color: #fff; }
.ks-badge--flame { background: var(--ks-flame); color: var(--ks-ink); }
.ks-badge--moss { background: var(--ks-moss); color: var(--ks-ink); }
.ks-badge--sunflower { background: var(--ks-sunflower); color: var(--ks-ink); }
.ks-badge--pulse { background: var(--ks-pulse); color: var(--ks-ink); }
.ks-badge--spark { background: var(--ks-spark); color: var(--ks-ink); }

.ks-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--ks-space-2);
  min-height: 44px;
  background: var(--ks-paper);
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  padding: 9px 16px;
  font-family: var(--ks-font-body);
  font-size: 13px;
  font-weight: var(--ks-weight-black);
  color: var(--ks-ink);
  cursor: pointer;
  box-shadow: var(--ks-shadow-sm);
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease, background var(--ks-dur-fast) var(--ks-ease);
}
.ks-pill:hover { transform: translate(-2px, -2px); box-shadow: var(--ks-shadow-hover); }
.ks-pill:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.ks-pill:focus-visible { outline: none; box-shadow: var(--ks-shadow-sm), var(--ks-focus-ring); }
.ks-pill--sel-blue      { background: var(--ks-blue); color: #fff; }
.ks-pill--sel-flame     { background: var(--ks-flame); color: var(--ks-ink); }
.ks-pill--sel-moss      { background: var(--ks-moss); color: var(--ks-ink); }
.ks-pill--sel-sunflower { background: var(--ks-sunflower); color: var(--ks-ink); }
.ks-pill--sel-pulse     { background: var(--ks-pulse); color: var(--ks-ink); }
.ks-pill--sel-spark     { background: var(--ks-spark); color: var(--ks-ink); }

.ks-frame {
  border: var(--ks-border);
  border-radius: var(--ks-radius-lg);
  box-shadow: var(--ks-shadow-card);
  overflow: hidden;
  background: var(--ks-haze);
}
.ks-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ks-frame--hero { border-radius: var(--ks-radius-xl); }

/* ---------- Masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ks-peach);
  border-bottom: var(--ks-border);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ks-space-4);
  min-height: 72px;
  padding-block: var(--ks-space-3);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  min-height: 44px;
  justify-content: center;
}
.brand__mark {
  font-family: var(--ks-font-display);
  font-size: clamp(18px, 3vw, 22px);
  letter-spacing: -0.06em;
  line-height: 0.9;
  text-transform: uppercase;
}
.brand__tag {
  font-family: var(--ks-font-mono);
  font-size: 10px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ks-ink-60);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--ks-space-5);
}
.nav-desktop a {
  font-size: 14px;
  font-weight: var(--ks-weight-extrabold);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--ks-radius-pill);
  padding: 0 4px;
}
.nav-desktop a:hover { color: var(--ks-blue); }
.nav-desktop a:focus-visible { box-shadow: var(--ks-focus-ring); }

.masthead__actions {
  display: flex;
  align-items: center;
  gap: var(--ks-space-2);
}
.masthead__cta { display: none; }
@media (min-width: 480px) {
  .masthead__cta { display: inline-flex; }
}

.icon-btn {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-paper);
  box-shadow: var(--ks-shadow-sm);
  color: var(--ks-ink);
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease;
}
.icon-btn:hover { transform: translate(-2px, -2px); box-shadow: var(--ks-shadow-hover); }
.icon-btn:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.icon-btn:focus-visible { outline: none; box-shadow: var(--ks-shadow-sm), var(--ks-focus-ring); }
.icon-btn svg { width: 22px; height: 22px; }

.menu-toggle { display: inline-flex; }
.menu-toggle[aria-expanded="true"] { background: var(--ks-ink); color: #fff; }

.nav-mobile {
  display: none;
  border-top: var(--ks-border);
  background: var(--ks-haze);
  padding: var(--ks-space-4) var(--ks-space-5) var(--ks-space-5);
}
.nav-mobile.is-open { display: block; }
.nav-mobile a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 var(--ks-space-3);
  font-weight: var(--ks-weight-extrabold);
  border-radius: var(--ks-radius-md);
}
.nav-mobile a:hover,
.nav-mobile a:focus-visible {
  background: var(--ks-paper);
}
.nav-mobile a:focus-visible { box-shadow: var(--ks-focus-ring); }

@media (min-width: 1024px) {
  .nav-desktop { display: flex; }
  .menu-toggle { display: none; }
  .nav-mobile { display: none !important; }
}

/* ---------- Channel pill nav ---------- */
.channel-nav {
  padding: var(--ks-space-4) 0 var(--ks-space-3);
  overflow: visible;
}
.channel-nav .wrap {
  overflow: visible;
}
.channel-nav__row {
  display: flex;
  gap: var(--ks-space-2);
  overflow-x: auto;
  overflow-y: hidden;
  /* Room for hard offset shadows (4–7px) + hover lift; end pad so last pill scrolls fully in */
  padding: 10px 4px 14px;
  padding-inline-end: var(--ks-space-8);
  margin: -2px 0;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  scroll-padding-inline-end: var(--ks-space-8);
}
.channel-nav__row::-webkit-scrollbar { height: 6px; }
.channel-nav__row::-webkit-scrollbar-thumb {
  background: var(--ks-ink-18);
  border-radius: var(--ks-radius-pill);
}
.channel-nav__row .ks-pill {
  flex: 0 0 auto;
}

/* ---------- Hero / Featured video ---------- */
.featured {
  padding: var(--ks-space-4) 0 var(--ks-space-9);
}

.featured__grid {
  display: grid;
  gap: var(--ks-space-6);
}

.featured__main {
  position: relative;
}

/* Mobile-first: stack 16:9 media, then title on blue — no text over the photo */
.player-poster {
  position: relative;
  display: flex;
  flex-direction: column;
  border: var(--ks-border);
  border-radius: var(--ks-radius-xl);
  box-shadow: var(--ks-shadow-card);
  overflow: hidden;
  background: var(--ks-blue);
  color: #fff;
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease;
}
.player-poster:hover { transform: translate(-2px, -2px); box-shadow: var(--ks-shadow-hover); }
.player-poster:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.player-poster:focus-visible { outline: none; box-shadow: var(--ks-shadow-card), var(--ks-focus-ring); }

.player-poster__media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  width: 100%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--ks-blue);
}
.player-poster__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.player-poster__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16,16,20,0.08) 40%, rgba(16,16,20,0.28) 100%);
  pointer-events: none;
}

.play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-flame);
  color: #fff;
  box-shadow: var(--ks-shadow-button);
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease;
  z-index: 2;
}
.player-poster:hover .play-btn {
  transform: translate(calc(-50% - 2px), calc(-50% - 2px));
  box-shadow: var(--ks-shadow-hover);
}
.play-btn svg { width: 28px; height: 28px; margin-left: 3px; }

.duration-badge {
  position: absolute;
  top: var(--ks-space-4);
  right: var(--ks-space-4);
  z-index: 2;
  font-family: var(--ks-font-mono);
  font-size: 12px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--ks-ink);
  color: #fff;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  padding: 8px 12px;
  box-shadow: var(--ks-shadow-sm);
}

.featured__meta {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--ks-space-3);
  padding: var(--ks-space-5);
  overflow: visible;
}
.featured__meta .ks-tag {
  justify-self: start;
  transform: rotate(-2deg);
}
.featured__title {
  font-family: var(--ks-font-display);
  font-size: clamp(26px, 7.2vw, 36px);
  letter-spacing: -0.07em;
  line-height: 0.88;
  text-transform: uppercase;
  color: #fff;
  max-width: none;
  overflow-wrap: anywhere;
  text-shadow: none;
}
.featured__deck {
  font-size: 15px;
  font-weight: var(--ks-weight-bold);
  color: rgba(255,255,255,0.9);
  max-width: 36ch;
  line-height: 1.4;
}

/* Tablet+: restore overlay title on the 16:9 frame */
@media (min-width: 768px) {
  .player-poster {
    display: block;
    aspect-ratio: 16 / 9;
  }
  .player-poster__media {
    position: absolute;
    inset: 0;
    aspect-ratio: auto;
    height: 100%;
  }
  .player-poster__shade {
    background: linear-gradient(180deg, rgba(16,16,20,0.05) 30%, rgba(16,16,20,0.72) 100%);
  }
  .play-btn {
    top: 46%;
  }
  .featured__meta {
    position: absolute;
    left: var(--ks-space-5);
    right: var(--ks-space-5);
    bottom: var(--ks-space-5);
    padding: 0;
    z-index: 2;
  }
  .featured__title {
    font-size: clamp(28px, 5vw, 44px);
    line-height: 0.86;
    max-width: 16ch;
    text-shadow: 0 2px 0 rgba(16,16,20,0.35);
  }
}

/* Up next queue */
.up-next {
  border: var(--ks-border);
  border-radius: var(--ks-radius-xl);
  background: var(--ks-paper);
  box-shadow: var(--ks-shadow-card);
  padding: var(--ks-space-5);
  display: grid;
  gap: var(--ks-space-4);
}
.up-next__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ks-space-3);
}
.up-next__title {
  font-family: var(--ks-font-display);
  font-size: 22px;
  letter-spacing: -0.06em;
  line-height: 0.9;
  text-transform: uppercase;
}
.up-next__list {
  display: grid;
  gap: var(--ks-space-3);
}
.up-next__item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--ks-space-3);
  align-items: center;
  padding: var(--ks-space-2);
  border-radius: var(--ks-radius-md);
  border: 2px solid transparent;
  transition: transform var(--ks-dur-press) ease, background var(--ks-dur-fast) var(--ks-ease);
  min-height: 44px;
}
.up-next__item:hover {
  background: var(--ks-haze);
  transform: translate(-2px, -2px);
}
.up-next__item:focus-visible {
  outline: none;
  box-shadow: var(--ks-focus-ring);
  background: var(--ks-haze);
}
.up-next__thumb {
  aspect-ratio: 1;
  border: var(--ks-border);
  border-radius: var(--ks-radius-md);
  overflow: hidden;
  box-shadow: var(--ks-shadow-sm);
  position: relative;
  background: var(--ks-haze);
}
.up-next__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.up-next__thumb .mini-dur {
  position: absolute;
  right: 4px;
  bottom: 4px;
  font-family: var(--ks-font-mono);
  font-size: 9px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.04em;
  background: var(--ks-ink);
  color: #fff;
  border: 1.5px solid var(--ks-ink);
  border-radius: var(--ks-radius-pill);
  padding: 2px 6px;
}
.up-next__label {
  font-family: var(--ks-font-mono);
  font-size: 10px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ks-ink-60);
  margin-bottom: 4px;
}
.up-next__name {
  font-size: 15px;
  font-weight: var(--ks-weight-extrabold);
  line-height: 1.25;
}

@media (min-width: 1024px) {
  .featured__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.85fr);
    align-items: stretch;
  }
  .up-next { height: 100%; }
}

/* ---------- Channel shelves ---------- */
.shelf {
  padding: var(--ks-space-8) 0;
}
.shelf + .shelf { padding-top: var(--ks-space-4); }

.shelf__chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 14px;
  border: var(--ks-border);
  border-radius: var(--ks-radius-pill);
  font-family: var(--ks-font-mono);
  font-size: 11px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  box-shadow: var(--ks-shadow-sm);
  margin-left: auto;
}
.shelf--speaking .shelf__chip { background: var(--ks-flame); color: var(--ks-ink); }
.shelf--listening .shelf__chip { background: var(--ks-pulse); color: var(--ks-ink); }
.shelf--exam .shelf__chip { background: var(--ks-blue); color: #fff; }
.shelf--words .shelf__chip { background: var(--ks-sunflower); color: var(--ks-ink); }

.shelf--speaking .ks-section-num { background: var(--ks-flame); color: var(--ks-ink); }
.shelf--listening .ks-section-num { background: var(--ks-pulse); color: var(--ks-ink); }
.shelf--exam .ks-section-num { background: var(--ks-blue); color: #fff; }
.shelf--words .ks-section-num { background: var(--ks-sunflower); color: var(--ks-ink); }

.shelf__track {
  display: flex;
  gap: var(--ks-space-4);
  overflow-x: auto;
  padding: var(--ks-space-2) var(--ks-space-1) var(--ks-space-5);
  margin: 0 calc(var(--ks-space-5) * -1);
  padding-inline: var(--ks-space-5);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.shelf__track::-webkit-scrollbar { height: 8px; }
.shelf__track::-webkit-scrollbar-thumb {
  background: var(--ks-ink-18);
  border-radius: var(--ks-radius-pill);
}

@media (min-width: 1280px) {
  .shelf__track {
    margin: 0;
    padding-inline: var(--ks-space-1);
  }
}

/* Shelf cards */
.lesson-card {
  flex: 0 0 min(78vw, 280px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: var(--ks-paper);
  border: var(--ks-border);
  border-radius: var(--ks-radius-lg);
  box-shadow: var(--ks-shadow-card);
  overflow: hidden;
  color: var(--ks-ink);
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease;
  min-height: 100%;
}
.lesson-card:hover { transform: translate(-2px, -2px); box-shadow: var(--ks-shadow-hover); }
.lesson-card:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.lesson-card:focus-visible { outline: none; box-shadow: var(--ks-shadow-card), var(--ks-focus-ring); }

.lesson-card--wide { flex-basis: min(86vw, 340px); }
.lesson-card--tall { flex-basis: min(70vw, 240px); }

.lesson-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--ks-haze);
  overflow: hidden;
}
.lesson-card__media--square { aspect-ratio: 1; }
.lesson-card__media--portrait { aspect-ratio: 3 / 4.2; min-height: 280px; }
.lesson-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.lesson-card__media--portrait img {
  object-position: top center;
}
.lesson-card__media--read,
.lesson-card__media--see {
  display: grid;
  place-items: center;
  padding: var(--ks-space-5);
}
.lesson-card__media--read { background: var(--ks-haze); }
.lesson-card__media--see { background: var(--ks-tint-pulse); }

.lesson-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--ks-space-2);
  padding: var(--ks-space-4) var(--ks-space-5) var(--ks-space-5);
  flex: 1;
}
.lesson-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ks-space-2);
}
.lesson-card__meta .ks-tag {
  transform: rotate(3deg);
  box-shadow: var(--ks-shadow-sm);
  padding: 6px 10px;
  font-size: 10px;
}
.lesson-card__title {
  font-size: 17px;
  font-weight: var(--ks-weight-extrabold);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.lesson-card__dek {
  font-size: 13px;
  font-weight: var(--ks-weight-bold);
  color: var(--ks-ink-60);
  line-height: 1.35;
}

.shelf--speaking .lesson-card { border-top: 6px solid var(--ks-flame); }
.shelf--listening .lesson-card { border-top: 6px solid var(--ks-pulse); }
.shelf--exam .lesson-card { border-top: 6px solid var(--ks-blue); }
.shelf--words .lesson-card { border-top: 6px solid var(--ks-sunflower); }

.card-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border: var(--ks-border);
  border-radius: var(--ks-radius-md);
  background: var(--ks-sunflower);
  box-shadow: var(--ks-shadow-sm);
  color: var(--ks-ink);
}
.card-icon--blue { background: var(--ks-blue); color: #fff; }
.card-icon--moss { background: var(--ks-moss); color: #fff; }
.card-icon--pulse { background: var(--ks-pulse); color: var(--ks-ink); }
.card-icon--spark { background: var(--ks-spark); color: var(--ks-ink); }
.card-icon svg { width: 26px; height: 26px; }

/* ---------- Daily warm-up colour block ---------- */
.warmup {
  margin: var(--ks-space-7) 0 var(--ks-space-9);
}
.warmup__band {
  position: relative;
  overflow: hidden;
  background: var(--ks-moss);
  color: var(--ks-ink);
  border: var(--ks-border);
  border-radius: var(--ks-radius-xl);
  box-shadow: var(--ks-shadow-card);
  padding: var(--ks-space-8) var(--ks-space-6);
}
.warmup__band::before {
  content: '';
  position: absolute;
  right: -40px;
  top: -30px;
  width: 180px;
  height: 180px;
  border: var(--ks-border);
  border-radius: 60% 40% 55% 45% / 48% 52% 44% 56%;
  background: var(--ks-sunflower);
  box-shadow: var(--ks-shadow-sm);
  transform: rotate(12deg);
  pointer-events: none;
}
.warmup__band::after {
  content: '';
  position: absolute;
  left: 12%;
  bottom: -28px;
  width: 90px;
  height: 90px;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-pulse);
  opacity: 0.85;
  pointer-events: none;
}
.warmup__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--ks-space-5);
  max-width: 640px;
}
.warmup__eyebrow {
  color: var(--ks-ink);
  opacity: 0.72;
}
.warmup__title {
  font-family: var(--ks-font-display);
  font-size: clamp(40px, 8vw, 64px);
  letter-spacing: -0.075em;
  line-height: 0.82;
  text-transform: uppercase;
  color: #fff; /* display-size white on moss — marketing allowed */
}
.warmup__copy {
  font-size: 17px;
  font-weight: var(--ks-weight-bold);
  line-height: 1.4;
  max-width: 38ch;
}
.warmup__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ks-space-2);
  align-items: center;
}
.warmup .ks-btn:focus-visible {
  box-shadow: var(--ks-shadow-button), var(--ks-focus-ring-on-color);
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: var(--ks-space-10);
  background: var(--ks-ink);
  color: #fff;
  padding: var(--ks-space-8) 0 var(--ks-space-7);
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--ks-sunflower); }
.site-footer a:focus-visible {
  outline: none;
  box-shadow: var(--ks-focus-ring-on-color);
  border-radius: 4px;
}
.site-footer__grid {
  display: grid;
  gap: var(--ks-space-6);
}
.site-footer__brand {
  font-family: var(--ks-font-display);
  font-size: 28px;
  letter-spacing: -0.07em;
  line-height: 0.9;
  text-transform: uppercase;
}
.site-footer__line {
  margin-top: var(--ks-space-2);
  font-size: 14px;
  font-weight: var(--ks-weight-bold);
  color: rgba(255,255,255,0.72);
  max-width: 36ch;
}
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ks-space-3) var(--ks-space-5);
}
.site-footer__nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-weight: var(--ks-weight-extrabold);
  font-size: 14px;
}
.site-footer__base {
  margin-top: var(--ks-space-7);
  padding-top: var(--ks-space-5);
  border-top: 2px solid rgba(255,255,255,0.18);
  font-family: var(--ks-font-mono);
  font-size: 11px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
  }
}

/* ============================================================
   ARTICLE — Video lesson page
   ============================================================ */
.lesson-page {
  padding: var(--ks-space-5) 0 var(--ks-space-10);
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ks-space-2);
  align-items: center;
  margin-bottom: var(--ks-space-5);
  font-size: 13px;
  font-weight: var(--ks-weight-bold);
  color: var(--ks-ink-60);
}
.crumb a {
  color: var(--ks-ink);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--ks-radius-pill);
  padding: 0 2px;
}
.crumb a:hover { color: var(--ks-blue); }
.crumb a:focus-visible { box-shadow: var(--ks-focus-ring); }
.crumb__sep { opacity: 0.45; }

.lesson-hero {
  display: grid;
  gap: var(--ks-space-5);
  margin-bottom: var(--ks-space-7);
}
.lesson-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ks-space-2);
  align-items: center;
}
.lesson-hero__title {
  font-family: var(--ks-font-display);
  font-size: clamp(32px, 6vw, 52px);
  letter-spacing: -0.075em;
  line-height: 0.86;
  text-transform: uppercase;
  max-width: 18ch;
}
.lesson-hero__deck {
  font-size: 17px;
  font-weight: var(--ks-weight-bold);
  color: var(--ks-ink-72);
  max-width: 48ch;
  line-height: 1.45;
}

/* Fake video player */
.vplayer {
  border: var(--ks-border);
  border-radius: var(--ks-radius-xl);
  background: var(--ks-paper);
  box-shadow: var(--ks-shadow-card);
  overflow: hidden;
  margin-bottom: var(--ks-space-6);
}
.vplayer__stage {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ks-blue);
  cursor: pointer;
}
.vplayer__stage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--ks-dur-base) var(--ks-ease);
}
.vplayer.is-playing .vplayer__stage img { opacity: 0.55; }
.vplayer__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(16,16,20,0.55) 100%);
  pointer-events: none;
}
.vplayer__play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  display: grid;
  place-items: center;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-flame);
  color: #fff;
  box-shadow: var(--ks-shadow-button);
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease, background var(--ks-dur-fast) var(--ks-ease);
  z-index: 2;
}
.vplayer__play:hover {
  transform: translate(calc(-50% - 2px), calc(-50% - 2px));
  box-shadow: var(--ks-shadow-hover);
}
.vplayer__play:active {
  transform: translate(calc(-50% + 5px), calc(-50% + 5px));
  box-shadow: none;
}
.vplayer__play:focus-visible {
  outline: none;
  box-shadow: var(--ks-shadow-button), var(--ks-focus-ring-on-color);
}
.vplayer__play svg { width: 30px; height: 30px; margin-left: 2px; }
.vplayer.is-playing .vplayer__play { background: var(--ks-ink); }
.vplayer__dur {
  position: absolute;
  top: var(--ks-space-4);
  right: var(--ks-space-4);
  z-index: 2;
}
.vplayer__controls {
  display: grid;
  gap: var(--ks-space-3);
  padding: var(--ks-space-4) var(--ks-space-5) var(--ks-space-5);
  background: var(--ks-paper);
}
.vplayer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ks-space-3);
  font-family: var(--ks-font-mono);
  font-size: 12px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ks-ink-60);
}
.vplayer__live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ks-ink);
}
.vplayer__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: var(--ks-border);
  background: var(--ks-haze);
}
.vplayer.is-playing .vplayer__dot { background: var(--ks-moss); }

/* Chapters */
.chapters {
  margin: var(--ks-space-7) 0;
}
.chapters__list {
  display: grid;
  gap: var(--ks-space-2);
}
.chapter {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: var(--ks-space-3);
  align-items: center;
  min-height: 56px;
  padding: 12px 16px;
  border: var(--ks-border);
  border-radius: var(--ks-radius-md);
  background: var(--ks-paper);
  box-shadow: var(--ks-shadow-sm);
  text-align: left;
  transition: transform var(--ks-dur-press) ease, box-shadow var(--ks-dur-press) ease, background var(--ks-dur-fast) var(--ks-ease);
  width: 100%;
  cursor: pointer;
}
.chapter:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--ks-shadow-hover);
  background: var(--ks-haze);
}
.chapter:active { transform: translate(var(--ks-press-offset), var(--ks-press-offset)); box-shadow: none; }
.chapter:focus-visible { outline: none; box-shadow: var(--ks-shadow-sm), var(--ks-focus-ring); }
.chapter--active {
  background: var(--ks-tint-blue);
}
.chapter__time {
  font-family: var(--ks-font-mono);
  font-size: 12px;
  font-weight: var(--ks-weight-extrabold);
  letter-spacing: 0.06em;
  color: var(--ks-blue);
}
.chapter__name {
  font-size: 15px;
  font-weight: var(--ks-weight-extrabold);
  line-height: 1.25;
}
.chapter__mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-haze);
  color: var(--ks-ink);
}
.chapter--active .chapter__mark {
  background: var(--ks-blue);
  color: #fff;
}
.chapter__mark svg { width: 14px; height: 14px; }

/* Article body */
.prose {
  display: grid;
  gap: var(--ks-space-5);
  margin: var(--ks-space-8) 0;
}
.prose h2 {
  font-family: var(--ks-font-display);
  font-size: clamp(28px, 4vw, 36px);
  letter-spacing: -0.07em;
  line-height: 0.88;
  text-transform: uppercase;
}
.prose p {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ks-ink-72);
}
.prose strong { color: var(--ks-ink); font-weight: var(--ks-weight-extrabold); }
.prose blockquote {
  margin: 0;
  padding: var(--ks-space-5);
  border: var(--ks-border);
  border-radius: var(--ks-radius-lg);
  background: var(--ks-haze);
  box-shadow: var(--ks-shadow-sm);
  font-size: 18px;
  font-weight: var(--ks-weight-extrabold);
  line-height: 1.35;
  color: var(--ks-ink);
}

.keep-card {
  display: grid;
  gap: var(--ks-space-5);
  margin: var(--ks-space-8) 0;
}
.keep-card__media {
  border: var(--ks-border);
  border-radius: var(--ks-radius-lg);
  box-shadow: var(--ks-shadow-card);
  overflow: hidden;
  background: var(--ks-paper);
}
.keep-card__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.keep-card__body { display: grid; gap: var(--ks-space-3); }
.keep-card__title {
  font-size: 22px;
  font-weight: var(--ks-weight-black);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.keep-card__copy {
  font-size: 15px;
  font-weight: var(--ks-weight-bold);
  color: var(--ks-ink-72);
  line-height: 1.4;
}

.practice-now {
  margin: var(--ks-space-8) 0;
  position: relative;
  overflow: hidden;
}
.practice-now::before {
  content: '';
  position: absolute;
  right: -24px;
  bottom: 20px;
  width: 120px;
  height: 70px;
  border: var(--ks-border);
  border-radius: 60% 40% 55% 45% / 50% 45% 55% 50%;
  background: var(--ks-pulse);
  box-shadow: var(--ks-shadow-sm);
  transform: rotate(14deg);
  pointer-events: none;
}
.practice-now__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--ks-space-4);
}
.practice-now__title {
  font-family: var(--ks-font-display);
  font-size: clamp(28px, 5vw, 40px);
  letter-spacing: -0.07em;
  line-height: 0.88;
  text-transform: uppercase;
}
.practice-now__list {
  display: grid;
  gap: var(--ks-space-3);
}
.practice-now__item {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: var(--ks-space-3);
  align-items: start;
  padding: var(--ks-space-3);
  border: var(--ks-border);
  border-radius: var(--ks-radius-md);
  background: var(--ks-paper);
  box-shadow: var(--ks-shadow-sm);
}
.practice-now__num {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: var(--ks-border);
  border-radius: 50%;
  background: var(--ks-flame);
  color: var(--ks-ink);
  font-family: var(--ks-font-mono);
  font-size: 12px;
  font-weight: var(--ks-weight-black);
}
.practice-now__text {
  font-size: 15px;
  font-weight: var(--ks-weight-extrabold);
  line-height: 1.3;
  padding-top: 8px;
}
.practice-now__hint {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: var(--ks-weight-bold);
  color: var(--ks-ink-60);
}

.up-next-row {
  margin-top: var(--ks-space-9);
  padding-top: var(--ks-space-7);
  border-top: var(--ks-border);
}
.up-next-row .shelf__track { margin-top: var(--ks-space-2); }

/* ---------- Entrance motion ---------- */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.rise {
  animation: rise-in var(--ks-dur-slow) var(--ks-ease) both;
}
.rise-1 { animation-delay: 40ms; }
.rise-2 { animation-delay: 100ms; }
.rise-3 { animation-delay: 160ms; }
.rise-4 { animation-delay: 220ms; }
.rise-5 { animation-delay: 280ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise { animation: none; }
  .ks-btn,
  .ks-pill,
  .lesson-card,
  .player-poster,
  .icon-btn,
  .chapter,
  .up-next__item,
  .play-btn,
  .vplayer__play {
    transition: none;
  }
}

/* ---------- Breakpoint polish ---------- */
@media (min-width: 480px) {
  .wrap { width: min(100% - var(--ks-space-6) * 2, var(--ks-container-app)); }
  .lesson-card { flex-basis: 260px; }
  .lesson-card--wide { flex-basis: 320px; }
}

@media (min-width: 768px) {
  .featured__meta { left: var(--ks-space-6); right: var(--ks-space-6); bottom: var(--ks-space-6); }
  .warmup__band { padding: var(--ks-space-9) var(--ks-space-8); }
  .chapter { grid-template-columns: 88px 1fr auto; }
  .lesson-card__media--portrait { min-height: 300px; }
}

@media (min-width: 1280px) {
  .shelf { padding: var(--ks-space-9) 0; }
  .play-btn { width: 84px; height: 84px; }
}