/* No Cover Charge · Learn styles. Owned by WS4 Learn (courses, lessons, tracks, podcasts, resources); Foundation owns ncc.css.
   Linked from both hosts (GuitarSuperSystem/wwwroot/index.html, GuitarSuperSystem.Web/Components/App.razor)
   after ncc/ncc.css with the shared build stamp, so it ships with every deploy and can use the tokens.
   Plain CSS (Tailwind does not compile this file): scope every rule under the feature's root class,
   use var(--n-*) tokens instead of raw colours, and keep motion to the ncc.css kit.

   Roots: .ln-hero (PageHero's guest splash), .ln-page (Learn pages on
   NPage: /courses, /courses/{slug}, /lessons, /lessons/{slug}, /saved, /podcasts, /resources, /tracks),
   .ln-crow (CourseRow), .ln-cw (ContinueWatching), .ln-cd (course details), .ln-ld (a lesson), .ln-gate
   (its paywall), .ln-upnext (UpNextCard), .ln-tabsheet (Tab Pro's sheet), .ln-lib (/lessons), .ln-srow
   (/saved), .ln-audio (AudioPlayer), .ln-trow (TrackRow), .ln-mini (MiniPlayer), .ln-shelf (the /tracks video
   rail), .ln-pod (podcast cards), .ln-res (/resources rows), .ln-pdf (PdfViewerModal). */

/* ---- PageHero: the guest splash ------------------------------------------------------------------ */
/* Visitors who aren't signed in. Uppercase display type is allowed here (guest marketing hero only).
   Sized to stay within ~40vh on a phone so the call to action is above the fold; the subtitle goes on
   short screens before the button does. */
.ln-hero { position: relative; isolation: isolate; margin: 0 0 var(--n-6); padding: var(--n-2) 0 0; }
.ln-hero::before {
  content: ""; position: absolute; z-index: -1; inset: calc(var(--n-page-top) * -1) calc(var(--n-gutter) * -1) -8px 35%;
  background: radial-gradient(90% 100% at 100% 0%, var(--n-red-wash), transparent 70%); pointer-events: none;
}
.ln-hero__eyebrow { display: block; margin-bottom: var(--n-3); color: var(--n-pink); }
.ln-hero__title {
  margin: 0; color: var(--n-text); font: 700 clamp(36px, 10.5vw, 72px)/.9 var(--n-font-display);
  letter-spacing: -.03em; text-transform: uppercase; text-wrap: balance;
}
.ln-hero__accent {
  background: linear-gradient(90deg, var(--n-pink), var(--n-red), var(--n-pink));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.ln-hero__sub {
  max-width: 52ch; margin: var(--n-3) 0 0; color: var(--n-text-2); font-size: var(--n-fs-body); line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--n-3); margin-top: var(--n-5); }
@media (max-height: 640px) and (max-width: 767px) { .ln-hero__sub { -webkit-line-clamp: 2; } }

/* ---- Learn pages: shared bits ---------------------------------------------------------------------- */
.ln-page { color: var(--n-text); }
.ln-page .ln-section { margin-top: var(--n-section); }
.ln-page .ln-rail { margin-bottom: var(--n-5); }
/* Room for the backing-track mini player while one is open (fixed above the tab pill, about 110px tall). */
.ln-page--player { padding-bottom: 132px; }

/* Card grids (podcast episodes, clips, video backing tracks) */
.ln-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: var(--n-4); }
.ln-grid--clips { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--n-3); }

/* Length on a thumbnail (video backing tracks, podcast cards) */
.ln-dur {
  position: absolute; right: 8px; bottom: 8px; padding: 4px 6px; border-radius: var(--n-r-xs); background: var(--n-glass);
  color: var(--n-text-hi); font: 700 var(--n-fs-micro)/1 var(--n-font-display); letter-spacing: .04em; font-variant-numeric: tabular-nums;
}
/* "More episodes" under a paged list */
.ln-more { display: flex; justify-content: center; margin-top: var(--n-4); }

/* Search field that hands off to /lessons?q= */
.ln-search { position: relative; margin: 0 0 var(--n-4); }
.ln-search > .n-icon { position: absolute; left: 12px; top: 50%; translate: 0 -50%; color: var(--n-text-3); pointer-events: none; --n-icon-size: 20px; }
.ln-search > .n-input { padding-left: 42px; }
.ln-search > .n-input::-webkit-search-decoration { -webkit-appearance: none; }

/* ---- Course list (/courses) ------------------------------------------------------------------------ */
.ln-list { display: grid; gap: var(--n-2); }
@media (min-width: 1024px) { .ln-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--n-3); } }

/* CourseRow: thumb, title, "N lessons · 1h 20m", a thin progress bar, chevron. */
.ln-crow {
  display: flex; align-items: center; gap: var(--n-3); min-width: 0; padding: var(--n-2) var(--n-1) var(--n-2) var(--n-2);
  border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line); color: var(--n-text); text-decoration: none;
}
@media (hover: hover) { .ln-crow:hover { border-color: var(--n-line-2); } }
.ln-crow > .n-img { flex: none; width: 96px; }
@media (min-width: 768px) { .ln-crow > .n-img { width: 128px; } }
.ln-crow__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 5px; }
.ln-crow__title {
  margin: 0; font: 700 15px/1.25 var(--n-font-display); color: var(--n-text);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-crow__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.ln-crow__chev { color: var(--n-text-4); --n-icon-size: 20px; }
.ln-crow.is-skel { pointer-events: none; }
.ln-crow__skthumb { flex: none; width: 96px; }
.ln-crow__skthumb > .n-skel { border-radius: var(--n-r-sm); }
@media (min-width: 768px) { .ln-crow__skthumb { width: 128px; } }

/* Brand placeholder under every Learn thumbnail: the feature-card red wash, never navy or teal. */
.ln-thumb.n-img { background: radial-gradient(120% 120% at 0% 0%, var(--n-red-wash), transparent 65%), var(--n-card-2); }

/* Thin progress bar (course rows, the continue rail, course details) */
.ln-bar { position: relative; height: 3px; border-radius: 2px; background: var(--n-card-3); overflow: hidden; }
.ln-bar > span { position: absolute; inset: 0 auto 0 0; border-radius: inherit; background: var(--n-red); }
.ln-bar.is-done > span { background: var(--n-go); }

/* The NCC Pro nudge for signed-in free members, after the list */
.ln-pro { display: grid; gap: var(--n-3); margin-top: var(--n-section); }
.ln-pro__title { margin: 0; font: 700 var(--n-fs-h3)/1.3 var(--n-font-display); color: var(--n-text); }
.ln-pro__body { margin: 0; color: var(--n-text-2); font-size: 14px; line-height: 1.5; }
@media (min-width: 768px) { .ln-pro { grid-template-columns: 1fr auto; align-items: center; } .ln-pro__actions { grid-row: 1 / span 2; grid-column: 2; } }

/* ---- Continue watching rail (ContinueWatching) ----------------------------------------------------- */
.ln-cw { margin: 0 0 var(--n-section); }
.ln-cw__rail {
  display: flex; gap: var(--n-3); overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: none;
  scroll-snap-type: x mandatory; margin-inline: calc(var(--n-gutter) * -1); padding: 2px var(--n-gutter);
  scroll-padding-inline: var(--n-gutter);
}
.ln-cw__rail::-webkit-scrollbar { display: none; }
.ln-cw__item { flex: none; width: min(64vw, 240px); scroll-snap-align: start; color: var(--n-text); text-decoration: none; }
.ln-cw__item > .n-img { border-radius: var(--n-r-sm); }
.ln-cw__play {
  position: absolute; left: 8px; bottom: 11px; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: var(--n-glass); color: var(--n-text-hi); --n-icon-size: 20px;
}
.ln-cw__item > .n-img > .ln-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; border-radius: 0; background: var(--n-line-2); }
.ln-cw__title { margin: var(--n-2) 0 0; font: 600 14px/1.3 var(--n-font-body); color: var(--n-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ln-cw__meta { margin: 2px 0 0; }

/* ---- Course details (/courses/{slug}) -------------------------------------------------------------- */
.ln-cd__back { margin-bottom: var(--n-2); }
.ln-cd__layout { display: grid; gap: var(--n-6); }
@media (min-width: 1024px) { .ln-cd__layout { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: var(--n-8); align-items: start; } }
.ln-cd__hero.n-img { border-radius: var(--n-r-lg); }
/* Wider and shorter on desktop, so the title and the first lessons stay on the first screen. */
@media (min-width: 1024px) { .ln-cd__hero.n-img { aspect-ratio: 21 / 9; } }
.ln-cd__hero.n-img::after { content: ""; position: absolute; inset: 40% 0 0; background: linear-gradient(to top, var(--n-scrim), transparent); pointer-events: none; }
.ln-cd__tags { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin: var(--n-4) 0 var(--n-2); }
.ln-cd__title { margin: 0; }
.ln-cd__meta { margin: var(--n-2) 0 0; color: var(--n-text-2); font-size: var(--n-fs-small); }
.ln-cd__meta b { color: var(--n-text); font-weight: 600; }
.ln-cd__progress { margin-top: var(--n-3); }
.ln-cd__desc { margin: var(--n-4) 0 0; color: var(--n-text-2); font-size: var(--n-fs-body); line-height: 1.6; white-space: pre-line; }

/* Curriculum rows. Locks come from the API per member (Video.IsLocked), never from order. */
.ln-cd__lessons { display: grid; gap: var(--n-2); }
.ln-lrow {
  display: flex; align-items: center; gap: var(--n-3); min-width: 0; padding: var(--n-2) var(--n-1) var(--n-2) var(--n-2);
  border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line); color: var(--n-text); text-decoration: none;
}
@media (hover: hover) { .ln-lrow:hover { border-color: var(--n-line-2); } }
.ln-lrow.is-next { border-color: var(--n-red-line); background: radial-gradient(120% 100% at 0% 0%, var(--n-red-wash), transparent 60%), var(--n-card); }
.ln-lrow > .n-img { flex: none; width: 88px; }
.ln-lrow__state {
  position: absolute; inset: 0; display: grid; place-items: center; background: var(--n-scrim); color: var(--n-text-hi); --n-icon-size: 22px;
}
.ln-lrow.is-done .ln-lrow__state { color: var(--n-go); }
.ln-lrow__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 3px; }
.ln-lrow__eyebrow { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.ln-lrow__title { margin: 0; font: 600 14px/1.3 var(--n-font-display); color: var(--n-text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ln-lrow.is-done .ln-lrow__title { color: var(--n-text-2); }
.ln-lrow__chev { color: var(--n-text-4); --n-icon-size: 20px; }

/* The Start / Continue button. Phones: a bar stuck above the floating tab pill (its DOM spot is the end of
   the column, so it holds the bottom while the curriculum scrolls). Desktop: the aside carries it. */
.ln-cd__cta {
  position: sticky; z-index: var(--n-z-raised); bottom: calc(var(--n-safe-b) + var(--n-tab-gap) + var(--n-tab-h) + 10px);
  margin-top: var(--n-4); padding: var(--n-2); border-radius: calc(var(--n-r-md) + var(--n-2));
  background: var(--n-glass); -webkit-backdrop-filter: var(--n-glass-fx); backdrop-filter: var(--n-glass-fx);
  border: 1px solid var(--n-line); box-shadow: var(--n-shadow-float);
}
.ln-cd__cta .n-btn__label { min-width: 0; }
.ln-cd__cta .n-btn { overflow: hidden; }
@media (min-width: 1024px) { .ln-cd__cta { display: none; } }
.ln-cd__aside { display: none; }
@media (min-width: 1024px) {
  .ln-cd__aside { display: grid; gap: var(--n-4); position: sticky; top: calc(var(--n-safe-t) + var(--n-topbar-h) + var(--n-4)); }
}
.ln-cd__stats { display: grid; gap: 0; margin: 0 0 var(--n-4); }
.ln-cd__stat { display: flex; align-items: baseline; justify-content: space-between; gap: var(--n-3); padding: var(--n-3) 0; border-bottom: 1px solid var(--n-line); }
.ln-cd__stat:last-child { border-bottom: 0; }
.ln-cd__stat > b { font: 700 var(--n-fs-h3)/1 var(--n-font-display); color: var(--n-text); font-variant-numeric: tabular-nums; }

/* ---- Lesson (/lessons/{slug}) ---------------------------------------------------------------------- */
.ln-ld__back { max-width: 100%; margin-bottom: var(--n-2); }
.ln-ld__back .n-back__label { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-ld__layout { display: grid; gap: var(--n-5); }
/* Desktop: the player and everything under it on the left, the course list in a sticky column on the right. */
@media (min-width: 1024px) {
  .ln-ld__layout { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); column-gap: var(--n-8); row-gap: var(--n-section); align-items: start; }
  .ln-ld__layout:not(:has(> .ln-ld__course)) { grid-template-columns: minmax(0, 1fr); }
  .ln-ld__top { grid-column: 1; grid-row: 1; }
  .ln-ld__rest { grid-column: 1; grid-row: 2; }
  .ln-ld__course { grid-column: 2; grid-row: 1 / span 2; position: sticky; top: calc(var(--n-safe-t) + var(--n-topbar-h) + var(--n-4)); }
}

.ln-ld__head { display: grid; gap: 6px; margin-top: var(--n-4); }
.ln-ld__head > .n-skel { display: block; }
.ln-ld__title { margin: 0; font: 700 22px/1.2 var(--n-font-display); letter-spacing: var(--n-ls-title); color: var(--n-text); text-wrap: balance; }
@media (min-width: 1024px) { .ln-ld__title { font-size: var(--n-fs-title); } }
.ln-ld__meta { display: flex; flex-wrap: wrap; gap: 0 6px; margin: 0; color: var(--n-text-3); font-size: var(--n-fs-small); font-variant-numeric: tabular-nums; }
.ln-ld__meta > span + span::before { content: "·"; margin-right: 6px; color: var(--n-text-4); }

/* Phones: Next lesson across the width, then Previous and the two toggles. From 768px one row. */
.ln-ld__actions { display: grid; gap: var(--n-3); margin-top: var(--n-4); }
.ln-ld__top > .n-skel:last-child { margin-top: var(--n-4); }
.ln-ld__tools { display: flex; align-items: center; gap: var(--n-2); min-height: 44px; }
.ln-ld__spacer { flex: 1 1 auto; }
.ln-ld__toggle.n-icon-btn { width: 40px; height: 40px; --n-icon-size: 22px; }
.ln-ld__toggle.n-icon-btn::after { content: ""; position: absolute; inset: -2px; }
.ln-ld__save[aria-pressed="true"] { color: var(--n-pink); }
.ln-ld__save.is-pop .n-icon { animation: n-like calc(520ms / var(--n-tempo)) var(--n-pop) 1; }
.ln-ld__done[aria-pressed="true"] { color: var(--n-go); background: var(--n-go-wash); }
@media (min-width: 768px) {
  .ln-ld__actions { display: flex; align-items: center; }
  .ln-ld__tools { flex: 1 1 auto; }
  .ln-ld__next.n-btn { order: 2; width: auto; flex: none; }
}

.ln-ld__stage-msg {
  display: grid; place-items: center; align-content: center; gap: var(--n-2); aspect-ratio: 16 / 9; padding: var(--n-5);
  border-radius: var(--n-r-md); background: var(--n-sunken); color: var(--n-text-2); text-align: center; --n-icon-size: 32px;
}
.ln-ld__stage-msg p { margin: 0; font-size: var(--n-fs-small); }
.ln-ld__stage-msg .n-icon { color: var(--n-text-3); }

/* Course content. Phones: folded to its header, right under the actions; from 1024px always open. */
.ln-ld__course { overflow: hidden; border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line); }
.ln-ld__course-head {
  display: flex; align-items: center; gap: var(--n-3); width: 100%; min-height: 56px; padding: var(--n-3) var(--n-4);
  border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.ln-ld__course-titles { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-ld__course-name { font: 700 15px/1.3 var(--n-font-display); color: var(--n-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-ld__course-chev { color: var(--n-text-3); transition: rotate var(--n-dur) var(--n-glide); }
.ln-ld__course.is-open .ln-ld__course-chev { rotate: 180deg; }
.ln-ld__list { margin: 0; padding: var(--n-1) 0 var(--n-2); list-style: none; border-top: 1px solid var(--n-line); }
.ln-ld__course:not(.is-open) .ln-ld__list { display: none; }
@media (min-width: 1024px) {
  .ln-ld__course-head { cursor: default; pointer-events: none; }
  .ln-ld__course-chev { display: none; }
  .ln-ld__course:not(.is-open) .ln-ld__list { display: block; }
  .ln-ld__list { max-height: calc(100vh - var(--n-safe-t) - var(--n-topbar-h) - 140px); overflow-y: auto; overscroll-behavior: contain; }
}
.ln-ld__item {
  display: flex; align-items: center; gap: var(--n-3); min-height: 52px; padding: 8px var(--n-4) 8px calc(var(--n-4) - 3px);
  border-left: 3px solid transparent; color: var(--n-text-2); text-decoration: none;
}
@media (hover: hover) { .ln-ld__item:hover { background: var(--n-card-2); } }
.ln-ld__item.is-current { background: var(--n-red-wash); border-left-color: var(--n-red); color: var(--n-text); }
.ln-ld__num {
  flex: none; display: grid; place-items: center; width: 28px; height: 28px; border-radius: var(--n-r-xs);
  background: var(--n-sunken); border: 1px solid var(--n-line-2); color: var(--n-pink);
  font: 700 12px/1 var(--n-font-display); font-variant-numeric: tabular-nums;
}
.ln-ld__item.is-current .ln-ld__num { background: var(--n-red); border-color: var(--n-red); color: var(--n-on-red); }
.ln-ld__item.is-done:not(.is-current) .ln-ld__num { color: var(--n-go); border-color: var(--n-line); }
.ln-ld__item-main { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-ld__item-title { font: 600 14px/1.3 var(--n-font-display); color: inherit; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-ld__item-meta { display: flex; align-items: center; gap: 6px; min-width: 0; }
.ln-ld__item-meta > .n-meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.ln-ld__rest > .ln-section:first-child { margin-top: 0; }
.ln-ld__desc { margin: 0; color: var(--n-text-2); font-size: var(--n-fs-body); line-height: 1.6; white-space: pre-line; overflow-wrap: anywhere; }

/* Attachments (Tab Pro, backing tracks, PDFs) and Backstage mentions: one row style. */
.ln-ld__res-list { display: grid; gap: var(--n-2); }
@media (min-width: 768px) { .ln-ld__res-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.ln-ld__res {
  display: flex; align-items: center; gap: var(--n-3); width: 100%; min-width: 0; padding: var(--n-3);
  border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line); color: var(--n-text); font: inherit; text-align: left;
}
.ln-ld__res--tap { cursor: pointer; }
@media (hover: hover) { .ln-ld__res--tap:hover { border-color: var(--n-line-2); } }
.ln-ld__res.is-on { border-color: var(--n-red-line); background: radial-gradient(120% 100% at 0% 0%, var(--n-red-wash), transparent 60%), var(--n-card); }
.ln-ld__res-icon {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--n-r-sm);
  background: var(--n-red-wash); color: var(--n-red); --n-icon-size: 22px;
}
.ln-ld__res.is-on .ln-ld__res-icon { background: var(--n-red); color: var(--n-on-red); }
.ln-ld__res-main { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-ld__res-title { font: 700 14px/1.3 var(--n-font-display); color: var(--n-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-ld__res-main > .n-meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-ld__res-end { color: var(--n-text-3); --n-icon-size: 18px; }
.ln-ld__res > .n-icon-btn { margin: -6px -6px -6px 0; }
.ln-ld__audio { margin-bottom: var(--n-3); }
.ln-ld__mention {
  display: grid; gap: 6px; min-width: 0; padding: var(--n-3) var(--n-4); border-radius: var(--n-r-md);
  background: var(--n-card); border: 1px solid var(--n-line); color: var(--n-text); text-decoration: none;
}
@media (hover: hover) { .ln-ld__mention:hover { border-color: var(--n-line-2); } }
.ln-ld__mention-by { display: flex; align-items: center; gap: var(--n-2); min-width: 0; font: 600 13px/1.3 var(--n-font-body); color: var(--n-text); }
.ln-ld__mention-title { font: 700 15px/1.3 var(--n-font-display); color: var(--n-text); }
.ln-ld__mention-body {
  color: var(--n-text-2); font-size: 14px; line-height: 1.45; overflow-wrap: anywhere;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* The inline paywall / sign-in gate. A one-cell grid: a 16:9 spacer and the copy share the cell, so the box
   keeps 16:9 when the copy fits and grows when it doesn't (a phone), instead of slicing the button off. */
.ln-gate { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1fr); overflow: hidden; border-radius: var(--n-r-md); background: var(--n-sunken); }
.ln-gate::before { content: ""; grid-area: 1 / 1; aspect-ratio: 16 / 9; }
.ln-gate::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, var(--n-scrim), var(--n-bg)); }
.ln-gate__bg { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; object-fit: cover; opacity: .45; }
.ln-gate__body { grid-area: 1 / 1; align-self: center; display: grid; justify-items: center; gap: var(--n-2); padding: var(--n-6) var(--n-5); text-align: center; }
.ln-gate__icon { color: var(--n-pink); --n-icon-size: 40px; }
.ln-gate__title { margin: var(--n-1) 0 0; font: 700 var(--n-fs-h2)/1.25 var(--n-font-display); color: var(--n-text); text-wrap: balance; }
.ln-gate__text { max-width: 44ch; margin: 0; color: var(--n-text-2); font-size: 14px; line-height: 1.5; text-wrap: pretty; }
.ln-gate__text b { color: var(--n-text); font-weight: 600; }
.ln-gate__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--n-2); margin-top: var(--n-3); }

/* ---- Up next (UpNextCard, on the lesson video when it ends) ----------------------------------------- */
.ln-upnext {
  position: absolute; inset: 0; z-index: var(--n-z-raised); display: grid; place-items: center; padding: var(--n-3);
  background: var(--n-scrim); animation: n-fade calc(280ms / var(--n-tempo)) var(--n-out) backwards;
}
.ln-upnext__card {
  display: grid; gap: 6px; width: min(100%, 380px); padding: var(--n-3) var(--n-4); border-radius: var(--n-r-md);
  background: var(--n-glass); -webkit-backdrop-filter: var(--n-glass-fx); backdrop-filter: var(--n-glass-fx);
  border: 1px solid var(--n-line-2); box-shadow: var(--n-shadow-float);
  animation: n-pop calc(420ms / var(--n-tempo)) var(--n-pop) backwards;
}
.ln-upnext__title {
  margin: 0; font: 700 15px/1.3 var(--n-font-display); color: var(--n-text-hi);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-upnext__note { margin: 0; color: var(--n-text-2); font-size: var(--n-fs-small); }
.ln-upnext__bar { margin-top: 2px; }
.ln-upnext__bar > span { width: 100%; animation: ln-countdown 5s linear both; }
@keyframes ln-countdown { from { width: 0; } }
.ln-upnext__actions { display: flex; justify-content: flex-end; gap: var(--n-2); margin-top: var(--n-1); }
/* A phone's 16:9 box is about 190px tall: one title line and tighter padding. */
@media (max-width: 479px) {
  .ln-upnext { padding: var(--n-2); }
  .ln-upnext__card { gap: 4px; padding: var(--n-2) var(--n-3); }
  .ln-upnext__title { -webkit-line-clamp: 1; }
}

/* ---- Tab Pro's sheet (LessonDetails): the score takes the whole sheet and scrolls inside it ------------ */
/* The sheet's root moves to <body> on open, so these key on the panel's own class, never an ancestor. */
.n-sheet.ln-tabsheet .ln-tabsheet__body { display: flex; flex-direction: column; overflow: hidden; padding-bottom: var(--n-3); }
.ln-tabsheet .tabp { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; margin-top: 0; }
.ln-tabsheet .tabp-stagebox { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
.ln-tabsheet .tabp-stage { flex: 1 1 auto; min-height: 0; max-height: none; }
@media (min-width: 768px) { .n-sheet.ln-tabsheet { max-width: min(1100px, 100%); height: min(960px, 92dvh); max-height: 92dvh; } }

/* ---- Lessons library (/lessons) ---------------------------------------------------------------------- */
.ln-lib__filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--n-3); margin: 0 0 var(--n-4); }
.ln-lib__count { margin: 0 0 var(--n-3); }
/* Virtualize puts a spacer before and after the rows; they are empty, so the gap is all they add. */
.ln-lib__list { display: grid; gap: var(--n-2); }
/* One eyebrow line per row (course · length · Pro): the course name gives way first, so rows stay even. */
.ln-lib .ln-lrow__main { grid-template-columns: minmax(0, 1fr); }
.ln-lib .ln-lrow__eyebrow { flex-wrap: nowrap; min-width: 0; }
.ln-lib .ln-lrow__eyebrow > * { flex: none; }
.ln-lib .ln-lrow__eyebrow > .ln-lib__course { flex: 0 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- Saved (/saved) ---------------------------------------------------------------------------------- */
.ln-srow {
  display: flex; align-items: center; gap: var(--n-1); min-width: 0; padding-right: var(--n-1);
  border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line);
}
@media (hover: hover) { .ln-srow:hover { border-color: var(--n-line-2); } }
.ln-srow__link { flex: 1 1 auto; display: flex; align-items: center; gap: var(--n-3); min-width: 0; padding: var(--n-2); border-radius: inherit; color: var(--n-text); text-decoration: none; }
.ln-srow__link > .n-img { flex: none; width: 96px; }
@media (min-width: 768px) { .ln-srow__link > .n-img { width: 128px; } }
.ln-srow__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 5px; }
.ln-srow__title {
  font: 700 15px/1.25 var(--n-font-display); color: var(--n-text);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-srow__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 0 6px; }
.ln-srow__meta > * + *::before { content: "·"; margin-right: 6px; color: var(--n-text-4); }
.ln-srow > .n-icon-btn[aria-pressed="true"] { color: var(--n-pink); }

/* ---- Audio player (AudioPlayer: lesson audio, backing tracks, Backstage attachments) ------------------ */
.ln-audio {
  display: grid; gap: var(--n-3); min-width: 0; padding: var(--n-4); border-radius: var(--n-r-md);
  background: var(--n-card); border: 1px solid var(--n-line); color: var(--n-text);
}
.ln-audio--embedded { padding: 0; border: 0; border-radius: 0; background: none; }

/* Visualizer: CSS only. Bars rest low; while .is-playing each runs its own height (--h) and tempo (--d). */
.ln-audio__viz {
  display: flex; align-items: flex-end; justify-content: center; gap: 3px; height: 56px; padding: var(--n-2) var(--n-2) 0;
  border-radius: var(--n-r-sm); background: var(--n-sunken); overflow: hidden;
}
.ln-audio__viz > span {
  flex: 1 1 0; max-width: 8px; height: 100%; border-radius: 2px 2px 0 0; transform-origin: bottom;
  background: linear-gradient(to top, var(--n-red), var(--n-pink)); scale: 1 .06; opacity: .35;
  transition: scale var(--n-dur) var(--n-out), opacity var(--n-dur) ease;
}
.ln-audio.is-playing .ln-audio__viz > span {
  opacity: 1; animation: ln-viz var(--d, 700ms) ease-in-out infinite alternate; animation-delay: calc(var(--i, 0) * -97ms);
}
@keyframes ln-viz { from { scale: 1 .12; } to { scale: 1 var(--h, .8); } }
@media (prefers-reduced-motion: reduce) { .ln-audio.is-playing .ln-audio__viz > span { animation: none; scale: 1 var(--h, .6); } }

.ln-audio__row { display: flex; align-items: center; gap: var(--n-3); min-width: 0; }
.ln-audio__play {
  position: relative; flex: none; display: grid; place-items: center; width: 48px; height: 48px; padding: 0; border: 0; border-radius: 50%;
  background: var(--n-red); color: var(--n-on-red); cursor: pointer; --n-icon-size: 28px;
  transition: background-color var(--n-dur) ease, scale var(--n-dur-fast) ease;
}
.ln-audio__play:active { scale: .94; background: var(--n-red-press); }
@media (hover: hover) { .ln-audio__play:hover { background: var(--n-red-press); } }
/* The buffering ring sits round the button, which stays tappable (pause while it loads). */
.ln-audio__ring { position: absolute; left: 50%; top: 50%; translate: -50% -50%; pointer-events: none; }
.ln-audio__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-audio__title { display: flex; align-items: baseline; gap: var(--n-2); min-width: 0; font: 700 14px/1.3 var(--n-font-display); color: var(--n-text); }
.ln-audio__title > span:first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-audio__title > .n-meta { flex: none; font-family: var(--n-font-body); font-weight: 600; }
.ln-audio__scrub { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: var(--n-2); }
.ln-audio__time { min-width: 32px; color: var(--n-text-3); font: 600 var(--n-fs-meta)/1 var(--n-font-body); font-variant-numeric: tabular-nums; }
.ln-audio__time:last-child { text-align: right; }

/* Range: a 4px track filled red up to --p, a white thumb; the input itself is 28px tall to be easy to grab. */
.ln-audio__range { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; margin: 0; padding: 0; background: transparent; cursor: pointer; }
.ln-audio__range:disabled { cursor: default; opacity: .5; }
.ln-audio__range::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--n-red) var(--p, 0%), var(--n-card-3) var(--p, 0%));
}
.ln-audio__range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 16px; height: 16px; margin-top: -6px; border: 0; border-radius: 50%;
  background: var(--n-text-hi); box-shadow: 0 0 0 4px var(--n-red-wash); transition: scale var(--n-dur-fast) ease;
}
.ln-audio__range:active::-webkit-slider-thumb { scale: 1.2; }
.ln-audio__range::-moz-range-track { height: 4px; border-radius: 2px; background: var(--n-card-3); }
.ln-audio__range::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--n-red); }
.ln-audio__range::-moz-range-thumb { width: 16px; height: 16px; border: 0; border-radius: 50%; background: var(--n-text-hi); box-shadow: 0 0 0 4px var(--n-red-wash); }

.ln-audio__tools { display: flex; align-items: center; flex-wrap: wrap; gap: var(--n-2); min-width: 0; }
.ln-audio__speeds { display: flex; gap: 6px; }
.ln-audio__tools .n-chip { height: 30px; padding: 0 11px; font-variant-numeric: tabular-nums; }
.ln-audio__vol { display: inline-flex; align-items: center; gap: 6px; margin-left: auto; color: var(--n-text-3); --n-icon-size: 18px; }
.ln-audio__vol > .ln-audio__range { width: 76px; }
.ln-audio__error { margin: 0; }

/* ---- Backing tracks (/tracks) ---------------------------------------------------------------------- */
.ln-shelf { margin: 0 0 var(--n-section); }

.ln-tlist { display: grid; gap: var(--n-2); }
@media (min-width: 1024px) { .ln-tlist { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--n-3); } }

/* TrackRow: a listitem holding the full-row play button and the 44px lesson button beside it. */
.ln-trow {
  display: flex; align-items: center; gap: var(--n-1); min-width: 0; padding-right: var(--n-1);
  border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line);
}
@media (hover: hover) { .ln-trow:hover { border-color: var(--n-line-2); } }
.ln-trow.is-on { border-color: var(--n-red-line); background: radial-gradient(120% 100% at 0% 0%, var(--n-red-wash), transparent 60%), var(--n-card); }
.ln-trow__play {
  flex: 1 1 auto; display: flex; align-items: center; gap: var(--n-3); min-width: 0; padding: var(--n-2);
  border: 0; border-radius: inherit; background: none; color: var(--n-text); font: inherit; text-align: left; cursor: pointer;
}
.ln-trow__play > .n-img { flex: none; width: 96px; }
@media (min-width: 768px) { .ln-trow__play > .n-img { width: 112px; } }
.ln-trow__state {
  position: absolute; left: 6px; bottom: 6px; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--n-glass); color: var(--n-text-hi); --n-icon-size: 18px;
}
.ln-trow.is-on .ln-trow__state { background: var(--n-red); color: var(--n-on-red); }
/* No cover art (most tracks): no NCC watermark crowding the disc. The key sits on the left and the disc
   on the right, both centred; with no key either, the disc sits in the middle. */
.ln-trow__play > .n-img.is-bare { display: flex; align-items: center; justify-content: center; padding: 0 10px; }
.ln-trow__play > .n-img.is-bare > .n-img__ph { display: none; }
.ln-trow__play > .n-img.is-bare > .ln-trow__state { position: static; }
.ln-trow__play > .n-img.is-bare:has(> .ln-trow__key) { justify-content: space-between; }
.ln-trow__key { color: var(--n-pink); font: 700 22px/1 var(--n-font-display); letter-spacing: -.02em; white-space: nowrap; }
.ln-trow__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 6px; }
.ln-trow__title {
  font: 700 15px/1.25 var(--n-font-display); color: var(--n-text);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-trow.is-on .ln-trow__title { color: var(--n-pink); }
.ln-trow__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.ln-trow__lesson { color: var(--n-text-3); }
.ln-trow.is-skel { pointer-events: none; }
.ln-trow__skthumb { flex: none; width: 96px; }
.ln-trow__skthumb > .n-skel { border-radius: var(--n-r-sm); }
@media (min-width: 768px) { .ln-trow__skthumb { width: 112px; } }

/* MiniPlayer: glass card floating just above the tab pill (84px over the home indicator), under the pill in
   z-order (--n-z-player). From 1024px there's no pill: it docks to the bottom of the content column, right
   of the 16rem sidebar, with its contents held to the page width. */
.ln-mini {
  position: fixed; z-index: var(--n-z-player); left: 14px; right: 14px; bottom: calc(var(--n-safe-b) + var(--n-tab-gap) + var(--n-tab-h) + 10px);
  max-width: 520px; margin-inline: auto; padding: 10px 12px 12px; border-radius: 20px;
  background: var(--n-glass); -webkit-backdrop-filter: var(--n-glass-fx); backdrop-filter: var(--n-glass-fx);
  border: 1px solid var(--n-line-2); box-shadow: var(--n-shadow-float);
  --rise: 40px; animation: n-rise calc(420ms / var(--n-tempo)) var(--n-out) backwards;
}
.ln-mini .ln-audio { gap: var(--n-2); }
.ln-mini .ln-audio__play { width: 44px; height: 44px; --n-icon-size: 26px; }
.ln-mini__more-btn { height: 30px; gap: 5px; padding: 0 9px 0 11px; }
.ln-mini__more-btn[aria-expanded="true"] { color: var(--n-text); border-color: var(--n-line-2); }
.ln-mini__chev { transition: rotate var(--n-dur) var(--n-glide); }
.ln-mini__more-btn[aria-expanded="true"] .ln-mini__chev { rotate: 180deg; }
.ln-mini__more {
  display: grid; gap: var(--n-2); margin-top: var(--n-3); padding-top: var(--n-3); border-top: 1px solid var(--n-line);
  max-height: min(40vh, 320px); overflow-y: auto; overscroll-behavior: contain;
  animation: n-fade calc(280ms / var(--n-tempo)) var(--n-out) backwards;
}
.ln-mini__lessons { display: grid; gap: 2px; }
.ln-mini__lesson { display: flex; align-items: center; gap: var(--n-3); min-height: 52px; padding: 4px; border-radius: var(--n-r-sm); color: var(--n-text); text-decoration: none; }
@media (hover: hover) { .ln-mini__lesson:hover { background: var(--n-card-2); } }
.ln-mini__lesson > .n-img { flex: none; width: 72px; }
.ln-mini__lesson-title {
  flex: 1 1 auto; min-width: 0; font: 600 14px/1.3 var(--n-font-display);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ln-mini__lesson-chev { color: var(--n-text-4); --n-icon-size: 20px; }
@media (min-width: 1024px) {
  .ln-mini {
    left: 16rem; right: 0; bottom: 0; max-width: none; margin: 0; padding: 12px var(--n-gutter) calc(12px + var(--n-safe-b));
    border-radius: 20px 20px 0 0; border-bottom: 0;
  }
  .ln-mini > * { max-width: calc(var(--n-max) - 2 * var(--n-gutter)); margin-inline: auto; }
}

/* ---- Tabs & resources (/resources) ---------------------------------------------------------------- */
.ln-res-count { margin: 0 0 var(--n-3); }
.ln-res-groups { display: grid; gap: var(--n-2); }
/* A group folds to its header: course (with a kicker) or topic, the file count, a chevron. */
.ln-res-group { overflow: hidden; border-radius: var(--n-r-md); background: var(--n-card); border: 1px solid var(--n-line); }
.ln-res-group__head {
  display: flex; align-items: center; gap: var(--n-3); width: 100%; min-height: 56px; padding: var(--n-2) var(--n-4);
  border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.ln-res-group__head:disabled { cursor: default; }
.ln-res-group__titles { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-res-group__title { font: 700 15px/1.3 var(--n-font-display); color: var(--n-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-res-group__chev { color: var(--n-text-3); transition: rotate var(--n-dur) var(--n-glide); }
.ln-res-group.is-open .ln-res-group__chev { rotate: 180deg; }
.ln-res-group__head:disabled .ln-res-group__chev { visibility: hidden; }
.ln-res-list { display: grid; padding: var(--n-1) 0 var(--n-2); border-top: 1px solid var(--n-line); }

/* A file: the open button (icon, title, kind) and a download button, then "From: {lesson}" under the title. */
.ln-res { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; padding: 0 var(--n-2) 0 0; }
.ln-res + .ln-res { border-top: 1px solid var(--n-line); }
.ln-res__open {
  text-decoration: none; display: flex; align-items: center; gap: var(--n-3); min-width: 0; min-height: 56px; padding: var(--n-2) var(--n-2) var(--n-2) var(--n-4);
  border: 0; background: none; color: var(--n-text); font: inherit; text-align: left; cursor: pointer;
}
@media (hover: hover) { .ln-res__open:hover .ln-res__title { color: var(--n-pink); } }
.ln-res__icon {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--n-r-sm);
  background: var(--n-red-wash); color: var(--n-red); --n-icon-size: 22px;
}
.ln-res__main { flex: 1 1 auto; min-width: 0; display: grid; gap: 2px; }
.ln-res__title { font: 700 14px/1.3 var(--n-font-display); color: var(--n-text); overflow-wrap: anywhere; transition: color var(--n-dur) ease; }
.ln-res__meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ln-res__img { display: block; width: 100%; height: auto; border-radius: var(--n-r-xs); }
.ln-pdf > .ln-res__img { padding: var(--n-2); }
.ln-res__dl { color: var(--n-text-3); }
.ln-res__from {
  grid-column: 1 / -1; display: inline-flex; align-items: center; gap: 6px; justify-self: start; max-width: 100%;
  min-height: 32px; margin: -6px 0 var(--n-2); padding: 0 var(--n-2) 0 calc(var(--n-4) + 40px + var(--n-3));
  color: var(--n-pink); font: 600 var(--n-fs-meta)/1.3 var(--n-font-body); text-decoration: none;
}
.ln-res__from > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (hover: hover) { .ln-res__from:hover { text-decoration: underline; } }

/* ---- PDF viewer (PdfViewerModal): pages on a sunken well; a skeleton page until page 1 is drawn ---------- */
/* The sheet's root moves to <body> on open, so these key on the panel's own class, never an ancestor. */
.n-sheet.ln-pdfsheet .ln-pdfsheet__body { padding: 0 var(--n-3) var(--n-3); }
@media (min-width: 768px) { .n-sheet.ln-pdfsheet { max-width: min(900px, 100%); height: min(1100px, 92dvh); max-height: 92dvh; } }
.ln-pdf { position: relative; min-height: 100%; border-radius: var(--n-r-sm); background: var(--n-sunken); }
.ln-pdf__pages { padding: var(--n-2); }
.ln-pdf__skel { position: absolute; inset: 0; display: grid; align-content: start; gap: var(--n-2); padding: var(--n-2); overflow: hidden; pointer-events: none; }
.ln-pdf__skel > .n-skel { border-radius: var(--n-r-xs); }
.ln-pdf.is-drawn .ln-pdf__skel { display: none; }

/* ---- Podcasts (/podcasts): episode and clip cards --------------------------------------------------- */
.ln-pod { display: grid; align-content: start; gap: var(--n-2); min-width: 0; color: var(--n-text); text-decoration: none; }
.ln-pod > .n-img { border-radius: var(--n-r-sm); }
.ln-pod.is-skel { pointer-events: none; }
.ln-pod.is-skel > .n-skel { border-radius: var(--n-r-sm); }
/* Progress sits on the thumbnail's bottom edge, as in the continue rail. */
.ln-pod > .n-img > .ln-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; border-radius: 0; background: var(--n-line-2); }
.ln-pod > .n-img > .ln-bar ~ .ln-dur { bottom: 11px; }
.ln-pod__new { position: absolute; top: 8px; left: 8px; }
.ln-pod__lock {
  position: absolute; inset: 0; display: grid; place-items: center; align-content: center; gap: 6px; padding: var(--n-3);
  background: var(--n-scrim); color: var(--n-pink); text-align: center; --n-icon-size: 32px;
}
.ln-pod.is-locked > .n-img > img { filter: blur(4px); }
.ln-pod__body { display: grid; gap: 4px; min-width: 0; }
.ln-pod__title {
  font: 700 16px/1.3 var(--n-font-display); color: var(--n-text); transition: color var(--n-dur) ease;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
@media (hover: hover) { .ln-pod:hover .ln-pod__title { color: var(--n-pink); } }
.ln-pod__meta { display: flex; flex-wrap: wrap; gap: 0 6px; }
.ln-pod__meta > * + *::before { content: "·"; margin-right: 6px; color: var(--n-text-4); }
.ln-pod--clip .ln-pod__title { font-size: 14px; }
/* 11px like every kicker; in the narrow 9:16 clip it wraps instead of shrinking. */
.ln-pod--clip .ln-pod__lock .n-kicker { letter-spacing: .08em; text-align: center; text-wrap: balance; }