/* KAVVI WORKSPACE PAGE (2026-10-08) - /workspaces/:id and its tabs (patch-workspace-page.cjs). The same design
   as the /workspaces list (kv-ws-20261008.css) and the sheets: app tokens, light/dark, RTL, phone. --c is the
   subject's colour (the study plan's palette). Mastery and Practice are other chunks: restyled inside .kvx-legacy. */
.kvx {
  --c: #2bb3a3;
  --kvx-card: var(--kv-card, #14201f);
  --kvx-line: var(--kv-line-3, rgba(255, 255, 255, .12));
  --kvx-soft: color-mix(in srgb, var(--kv-text, #f1f3e9) 5%, transparent);
  --kvx-accent: var(--kv-accent-fill, #c8f5ad);
  --kvx-on: #10201a;
  inline-size: min(100%, 1120px); margin: 0 auto; padding: 4px 4px 56px;
  color: var(--kv-text, #f1f3e9); font-family: var(--kv-font-body);
}
html[data-theme='light'] .kvx { --kvx-on: #f4f7f0; }
@media (prefers-color-scheme: light) { :root:not([data-theme='dark']) .kvx { --kvx-on: #f4f7f0; } }
[dir='rtl'] .kvx { font-family: var(--kv-font-ar, var(--kv-font-body)); }
.kvx *, .kvx *::before, .kvx *::after { box-sizing: border-box; }
/* my own controls only: the Mastery / Practice chunks style their buttons themselves */
.kvx :where(button, input, select, textarea):not(.kvx-legacy *) { font: inherit; color: inherit; }
[dir='rtl'] .kvx .kvx-next__arrow, [dir='rtl'] .kvx .kvx-lesson__go svg, [dir='rtl'] .kvx .kvx-back svg { transform: scaleX(-1); }

.kvx .kvx-back { display: inline-flex; align-items: center; gap: 7px; margin: 4px 0 12px; padding: 6px 12px 6px 8px; border: 0; border-radius: 999px; background: transparent; color: var(--kv-text-2, #c9d5c4); font-size: 14px; font-weight: 600; cursor: pointer; transition: background .15s ease; }
.kvx .kvx-back:hover { background: var(--kvx-soft); }

/* header */
.kvx-hero {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 22px; padding: 22px; border-radius: 28px; overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--c) 30%, var(--kvx-line));
  background: linear-gradient(125deg, color-mix(in srgb, var(--c) 17%, var(--kvx-card)), var(--kvx-card) 62%);
  box-shadow: 0 22px 50px -32px color-mix(in srgb, var(--c) 85%, transparent);
  animation: kvxUp .45s ease-out both;
}
.kvx-hero__main { display: grid; align-content: start; gap: 12px; min-inline-size: 0; }
.kvx-hero__top { display: flex; align-items: flex-start; gap: 12px; }
.kvx-hero__ico { flex: none; display: grid; place-items: center; inline-size: 52px; block-size: 52px; border-radius: 17px; color: #fff;
  background: linear-gradient(140deg, color-mix(in srgb, var(--c) 88%, #fff), color-mix(in srgb, var(--c) 76%, #000)); box-shadow: 0 10px 22px -12px var(--c); }
.kvx-tags { flex: 1; display: flex; flex-wrap: wrap; gap: 6px; min-inline-size: 0; padding-top: 4px; }
.kvx-tag { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 999px; background: var(--kvx-soft); color: var(--kv-text-2, #c9d5c4); font-size: 12px; font-weight: 600; white-space: nowrap; }
.kvx-tag--c { background: color-mix(in srgb, var(--c) 20%, transparent); color: color-mix(in srgb, var(--c) 75%, var(--kv-text, #f1f3e9)); }
.kvx-tag--warn { background: color-mix(in srgb, #f59e0b 18%, transparent); color: color-mix(in srgb, #f59e0b 80%, var(--kv-text, #f1f3e9)); }
.kvx-tag--live { background: color-mix(in srgb, var(--c) 20%, transparent); color: color-mix(in srgb, var(--c) 80%, var(--kv-text, #f1f3e9)); }
.kvx-tag--done { background: color-mix(in srgb, var(--kvx-accent) 25%, transparent); color: var(--kv-text, #f1f3e9); }
.kvx-actions { flex: none; display: flex; gap: 6px; }
.kvx .kvx-act { display: inline-flex; align-items: center; gap: 6px; min-block-size: 36px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--kvx-line); background: color-mix(in srgb, var(--kvx-card) 70%, transparent); font-size: 13px; font-weight: 600; cursor: pointer; transition: background .15s ease, border-color .15s ease; }
.kvx .kvx-act:hover { background: var(--kvx-soft); border-color: color-mix(in srgb, var(--c) 45%, var(--kvx-line)); }
.kvx .kvx-act--danger { padding: 6px 10px; color: color-mix(in srgb, #ef4444 75%, var(--kv-text, #f1f3e9)); }
.kvx-hero h1 { margin: 2px 0 0; font-family: var(--kv-font-head); font-size: clamp(26px, 3.6vw, 36px); font-weight: 700; line-height: 1.15; letter-spacing: -.02em; }
[dir='rtl'] .kvx-hero h1 { font-family: inherit; letter-spacing: 0; line-height: 1.35; }
.kvx-hero__goal { margin: 0; max-inline-size: 640px; color: var(--kv-text-2, #c9d5c4); font-size: 15px; line-height: 1.6; }
.kvx-facts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.kvx-fact { display: inline-flex; align-items: baseline; gap: 6px; padding: 8px 14px; border-radius: 14px; background: var(--kvx-soft); }
.kvx-fact b { font-size: 18px; font-weight: 800; font-variant-numeric: tabular-nums; }
.kvx-fact span { color: var(--kv-text-3, #aebdb4); font-size: 13px; }

.kvx-hero__side { display: grid; justify-items: center; align-content: center; gap: 10px; padding: 16px; border-radius: 22px; background: color-mix(in srgb, var(--kvx-card) 75%, transparent); border: 1px solid var(--kvx-line); }
.kvx-ring { --p: 0; position: relative; display: grid; place-items: center; inline-size: 104px; block-size: 104px; border-radius: 50%;
  background: radial-gradient(closest-side, var(--kvx-card) 80%, transparent 81% 100%), conic-gradient(var(--c) calc(var(--p) * 1%), color-mix(in srgb, var(--c) 16%, transparent) 0);
  animation: kvxPop .6s .1s cubic-bezier(.2, .9, .3, 1.3) both; }
.kvx-ring b { font-size: 24px; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; }
.kvx-ring small { position: absolute; inset-block-end: 26px; color: var(--kv-text-3, #aebdb4); font-size: 11px; }
.kvx-ring b { margin-block-end: 10px; }
.kvx-ring__label { margin: 0; color: var(--kv-text-3, #aebdb4); font-size: 13px; }
.kvx .kvx-next { display: flex; align-items: center; gap: 10px; inline-size: 100%; padding: 10px 12px; border-radius: 16px; border: 0; cursor: pointer; text-align: start;
  background: var(--c); color: #fff; box-shadow: 0 12px 26px -14px var(--c); transition: transform .15s ease, filter .15s ease; }
.kvx .kvx-next:hover { transform: translateY(-1px); filter: brightness(1.06); }
.kvx-next__play { flex: none; display: grid; place-items: center; inline-size: 32px; block-size: 32px; border-radius: 10px; background: rgba(255, 255, 255, .22); }
.kvx-next__text { flex: 1; display: grid; min-inline-size: 0; }
.kvx-next__text small { font-size: 11.5px; font-weight: 700; opacity: .85; }
.kvx-next__text strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.kvx-done { margin: 0; font-weight: 700; }

/* tabs */
.kvx-tabsbar { position: sticky; top: 64px; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin: 16px 0 14px; padding: 6px; border-radius: 20px;
  background: color-mix(in srgb, var(--kvx-card) 88%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border: 1px solid var(--kvx-line); animation: kvxUp .45s .08s ease-out both; }
.kvx-tabs { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.kvx-tabs::-webkit-scrollbar { display: none; }
.kvx .kvx-tabs button { position: relative; display: inline-flex; align-items: center; gap: 8px; min-block-size: 42px; padding: 8px 16px; border: 0; border-radius: 14px; background: transparent; color: var(--kv-text-2, #c9d5c4); font-size: 14.5px; font-weight: 600; white-space: nowrap; cursor: pointer; transition: background .15s ease, color .15s ease; }
.kvx .kvx-tabs button:hover { background: var(--kvx-soft); }
.kvx .kvx-tabs button.is-on { background: color-mix(in srgb, var(--c) 18%, var(--kvx-card)); color: var(--kv-text, #f1f3e9); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 40%, transparent); }
.kvx .kvx-tabs button.is-on svg { color: var(--c); }
.kvx-tabs em { min-inline-size: 22px; padding: 1px 7px; border-radius: 999px; background: var(--kvx-soft); font-size: 12px; font-style: normal; font-weight: 700; text-align: center; }
.kvx-mode { display: flex; align-items: center; gap: 8px; padding-inline: 6px; color: var(--kv-text-3, #aebdb4); font-size: 13px; }
.kvx-mode > div { display: flex; gap: 2px; padding: 3px; border-radius: 12px; background: var(--kvx-soft); }
.kvx .kvx-mode button { min-block-size: 32px; padding: 4px 10px; border: 0; border-radius: 9px; background: transparent; font-size: 13px; font-weight: 600; cursor: pointer; color: var(--kv-text-2, #c9d5c4); }
.kvx .kvx-mode button.is-on { background: var(--kvx-card); color: var(--kv-text, #f1f3e9); box-shadow: 0 1px 4px -1px rgba(0, 0, 0, .3); }

.kvx-panel { display: grid; gap: 14px; animation: kvxUp .35s ease-out both; }
.kvx-h2 { margin: 0; font-size: 20px; font-weight: 800; }

/* notes, offer, buttons */
.kvx-note { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 14px; border-radius: 16px; background: var(--kvx-soft); font-size: 14px; line-height: 1.5; }
.kvx-note > span { flex: 1; min-inline-size: 200px; }
.kvx-note--warn { background: color-mix(in srgb, #f59e0b 12%, transparent); }
.kvx-note--warn svg { color: #f59e0b; }
.kvx-note--err { background: color-mix(in srgb, #ef4444 11%, transparent); }
.kvx-note--err svg { color: #ef4444; }
.kvx-note--ok { background: color-mix(in srgb, var(--kvx-accent) 14%, transparent); }
.kvx-offer { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 16px; border-radius: 22px; border: 1px solid color-mix(in srgb, var(--c) 30%, var(--kvx-line)); background: color-mix(in srgb, var(--c) 8%, var(--kvx-card)); }
.kvx-offer > div:nth-child(2) { flex: 1; min-inline-size: 220px; }
.kvx-offer strong { font-size: 15.5px; }
.kvx-offer p { margin: 3px 0 0; color: var(--kv-text-3, #aebdb4); font-size: 13.5px; }
.kvx-offer__btns { display: flex; gap: 8px; }
.kvx .kvx-btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-block-size: 40px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--kvx-line); background: transparent; font-size: 14px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: background .15s ease, transform .15s ease; }
.kvx .kvx-btn:hover:not(:disabled) { background: var(--kvx-soft); }
.kvx .kvx-btn:disabled { opacity: .5; cursor: not-allowed; }
.kvx .kvx-btn--quiet { border-color: transparent; color: var(--kv-text-2, #c9d5c4); }
.kvx .kvx-btn--go { border-color: transparent; background: var(--kvx-accent); color: var(--kvx-on); font-weight: 700; box-shadow: 0 10px 22px -14px var(--kvx-accent); }
.kvx .kvx-btn--go:hover:not(:disabled) { background: var(--kvx-accent); filter: brightness(1.05); transform: translateY(-1px); }
.kvx .kvx-icon { display: grid; place-items: center; inline-size: 34px; block-size: 34px; border-radius: 10px; border: 0; background: transparent; color: var(--kv-text-3, #aebdb4); cursor: pointer; transition: background .15s ease, color .15s ease; }
.kvx .kvx-icon:hover { background: var(--kvx-soft); color: var(--kv-text, #f1f3e9); }
.kvx .kvx-icon--danger:hover { color: #ef4444; }

.kvx-bar { position: relative; display: block; block-size: 7px; border-radius: 99px; background: color-mix(in srgb, var(--c) 15%, var(--kvx-soft)); overflow: hidden; }
.kvx-bar i { position: absolute; inset-block: 0; inset-inline-start: 0; inline-size: var(--w); border-radius: inherit; background: linear-gradient(90deg, color-mix(in srgb, var(--c) 72%, #fff), var(--c)); animation: kvxFill .9s .2s cubic-bezier(.2, .8, .2, 1) both; }

/* tracks */
.kvx-tracks { display: grid; gap: 12px; }
.kvx-tracks__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.kvx-track { display: grid; gap: 10px; padding: 16px; border-radius: 22px; cursor: pointer; border: 1px solid color-mix(in srgb, var(--c) 24%, var(--kvx-line)); background: linear-gradient(165deg, color-mix(in srgb, var(--c) 9%, var(--kvx-card)), var(--kvx-card) 60%); animation: kvxUp .4s calc(var(--i, 0) * 50ms + 100ms) ease-out both; transition: transform .18s ease, border-color .18s ease; }
.kvx-track:hover, .kvx-track:focus-visible { transform: translateY(-2px); border-color: color-mix(in srgb, var(--c) 50%, var(--kvx-line)); outline: none; }
.kvx-track__top, .kvx-track__foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--kv-text-3, #aebdb4); font-size: 13px; }
.kvx-track__top b { color: var(--kv-text, #f1f3e9); }
.kvx-track h3 { margin: 0; font-size: 17px; font-weight: 800; }
.kvx-track p { margin: 0; color: var(--kv-text-3, #aebdb4); font-size: 13.5px; line-height: 1.5; }

/* units and lessons */
.kvx-units { display: grid; gap: 12px; }
.kvx-unit { border-radius: 24px; border: 1px solid var(--kvx-line); background: var(--kvx-card); overflow: hidden; animation: kvxUp .4s calc(var(--i, 0) * 60ms + 80ms) ease-out both; transition: border-color .18s ease; }
.kvx-unit.is-open { border-color: color-mix(in srgb, var(--c) 28%, var(--kvx-line)); }
.kvx-unit__head { display: flex; align-items: center; gap: 14px; padding: 16px 18px; cursor: pointer; outline: none; transition: background .15s ease; }
.kvx-unit__head:hover, .kvx-unit__head:focus-visible { background: var(--kvx-soft); }
.kvx-unit__num { flex: none; display: grid; place-items: center; inline-size: 40px; block-size: 40px; border-radius: 13px; font-weight: 800; font-size: 16px; color: color-mix(in srgb, var(--c) 80%, var(--kv-text, #f1f3e9)); background: color-mix(in srgb, var(--c) 18%, transparent); }
.kvx-unit__info { flex: 1; min-inline-size: 0; display: grid; gap: 2px; }
.kvx-unit__eyebrow { color: color-mix(in srgb, var(--c) 70%, var(--kv-text-3, #aebdb4)); font-size: 12px; font-weight: 700; }
.kvx-unit__info h3 { margin: 0; font-size: 17.5px; font-weight: 800; line-height: 1.3; }
.kvx-unit__info p { margin: 2px 0 0; color: var(--kv-text-3, #aebdb4); font-size: 13.5px; line-height: 1.5; }
.kvx-unit__side { flex: none; display: flex; align-items: center; gap: 10px; }
.kvx-unit__count { color: var(--kv-text-3, #aebdb4); font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kvx-unit__side .kvx-bar { inline-size: 96px; }
.kvx-unit__chev { display: grid; place-items: center; inline-size: 30px; block-size: 30px; border-radius: 10px; background: var(--kvx-soft); color: var(--kv-text-2, #c9d5c4); }
.kvx-rename { display: flex; align-items: center; gap: 6px; }
.kvx .kvx-rename input { flex: 1; min-inline-size: 0; min-block-size: 38px; margin: 0; padding: 6px 12px; border-radius: 12px; border: 1px solid color-mix(in srgb, var(--c) 50%, var(--kvx-line)); background: var(--kvx-soft); font-size: 15px; font-weight: 600; }
.kvx .kvx-rename .kvx-btn { min-block-size: 38px; padding: 6px 12px; }

.kvx-lessons { position: relative; display: grid; gap: 4px; margin: 0; padding: 4px 14px 14px; list-style: none; }
.kvx-lessons::before { content: ''; position: absolute; inset-block: 18px 30px; inset-inline-start: 37px; border-inline-start: 2px dashed color-mix(in srgb, var(--c) 28%, transparent); }
.kvx-lesson { position: relative; display: flex; align-items: center; gap: 14px; padding: 12px 10px; border-radius: 18px; cursor: pointer; outline: none; animation: kvxUp .35s calc(var(--i, 0) * 40ms) ease-out both; transition: background .15s ease; }
.kvx-lesson:hover, .kvx-lesson:focus-visible { background: color-mix(in srgb, var(--c) 8%, transparent); }
.kvx-lesson__dot { position: relative; z-index: 1; flex: none; display: grid; place-items: center; inline-size: 30px; block-size: 30px; border-radius: 50%; font-size: 13px; font-weight: 800; color: var(--kv-text-2, #c9d5c4); background: var(--kvx-card); box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--c) 35%, var(--kvx-line)); }
.kvx-lesson.is-completed .kvx-lesson__dot { color: #fff; background: var(--c); box-shadow: none; }
.kvx-lesson.is-in_progress .kvx-lesson__dot { box-shadow: inset 0 0 0 2px var(--c); }
.kvx-lesson.is-in_progress .kvx-lesson__dot i { inline-size: 10px; block-size: 10px; border-radius: 50%; background: var(--c); animation: kvxPulse 1.4s ease-in-out infinite; }
.kvx-lesson__body { flex: 1; min-inline-size: 0; display: grid; gap: 3px; }
.kvx-lesson__title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.kvx-lesson__title h4 { margin: 0; font-size: 15.5px; font-weight: 700; line-height: 1.35; }
.kvx-lesson__body p { margin: 0; color: var(--kv-text-3, #aebdb4); font-size: 13.5px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.kvx-lesson__meta { display: flex; flex-wrap: wrap; gap: 12px; color: var(--kv-text-3, #aebdb4); font-size: 12.5px; }
.kvx-lesson__meta span { display: inline-flex; align-items: center; gap: 5px; }
.kvx-lesson__pct { color: color-mix(in srgb, var(--c) 75%, var(--kv-text, #f1f3e9)) !important; font-weight: 700; }
.kvx-lesson__go { flex: none; display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: 999px; background: color-mix(in srgb, var(--c) 14%, transparent); color: color-mix(in srgb, var(--c) 78%, var(--kv-text, #f1f3e9)); font-size: 13px; font-weight: 700; transition: background .15s ease, gap .15s ease; }
.kvx-lesson:hover .kvx-lesson__go { background: color-mix(in srgb, var(--c) 26%, transparent); gap: 9px; }
.kvx-lesson.is-completed .kvx-lesson__go { background: var(--kvx-soft); color: var(--kv-text-2, #c9d5c4); }
.kvx-lessons__empty { display: flex; align-items: center; gap: 10px; padding: 16px; color: var(--kv-text-3, #aebdb4); font-size: 14px; }

/* sources */
.kvx-src { display: grid; gap: 14px; }
.kvx-src__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.kvx-src__head p { margin: 4px 0 0; color: var(--kv-text-3, #aebdb4); font-size: 14px; }
.kvx-src__actions { display: flex; flex-wrap: wrap; gap: 8px; }
.kvx-src__add { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 10px; }
.kvx-drop { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: 20px; cursor: pointer; border: 1.5px dashed color-mix(in srgb, var(--c) 45%, var(--kvx-line)); background: color-mix(in srgb, var(--c) 6%, transparent); transition: border-color .15s ease, background .15s ease; }
.kvx-drop:hover, .kvx-drop.is-over { border-color: var(--c); background: color-mix(in srgb, var(--c) 12%, transparent); }
.kvx-drop__ico { flex: none; display: grid; place-items: center; inline-size: 44px; block-size: 44px; border-radius: 14px; color: #fff; background: var(--c); }
.kvx-drop__text { display: grid; gap: 2px; }
.kvx-drop__text strong { font-size: 14.5px; }
.kvx-drop__text small { color: var(--kv-text-3, #aebdb4); font-size: 12.5px; }
.kvx-url { display: flex; align-items: center; gap: 8px; padding: 8px 8px 8px 14px; border-radius: 20px; border: 1px solid var(--kvx-line); background: var(--kvx-card); color: var(--kv-text-3, #aebdb4); }
[dir='rtl'] .kvx-url { padding: 8px 14px 8px 8px; }
.kvx .kvx-url input { flex: 1; min-inline-size: 0; min-block-size: 0; margin: 0; padding: 0; border: 0 !important; outline: 0; background: transparent !important; box-shadow: none !important; color: var(--kv-text, #f1f3e9); font-size: 14.5px; }
.kvx-src__list { display: grid; gap: 8px; }
.kvx-file { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 18px; border: 1px solid var(--kvx-line); background: var(--kvx-card); animation: kvxUp .35s calc(var(--i, 0) * 40ms) ease-out both; }
.kvx-file__ico { flex: none; display: grid; place-items: center; inline-size: 38px; block-size: 38px; border-radius: 12px; color: color-mix(in srgb, var(--c) 80%, var(--kv-text, #f1f3e9)); background: color-mix(in srgb, var(--c) 15%, transparent); }
.kvx-file__info { flex: 1; min-inline-size: 0; display: grid; gap: 3px; }
.kvx-file__info strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14.5px; }
.kvx-file__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; color: var(--kv-text-3, #aebdb4); font-size: 12.5px; }
.kvx-status { padding: 2px 8px; border-radius: 999px; background: var(--kvx-soft); font-weight: 700; font-size: 11.5px; }
.kvx-status.is-ready { background: color-mix(in srgb, var(--kvx-accent) 22%, transparent); color: var(--kv-text, #f1f3e9); }
.kvx-status.is-processing, .kvx-status.is-queued { background: color-mix(in srgb, var(--c) 18%, transparent); }
.kvx-status.is-failed, .kvx-status.is-needs_review { background: color-mix(in srgb, #ef4444 15%, transparent); color: color-mix(in srgb, #ef4444 80%, var(--kv-text, #f1f3e9)); }
.kvx-in { display: inline-flex; align-items: center; gap: 4px; color: color-mix(in srgb, var(--c) 75%, var(--kv-text, #f1f3e9)); font-weight: 600; }
.kvx-file__ctl { flex: none; display: flex; align-items: center; gap: 6px; }
.kvx-seg { display: flex; gap: 2px; padding: 3px; border-radius: 12px; background: var(--kvx-soft); }
.kvx .kvx-seg button { min-block-size: 30px; padding: 4px 10px; border: 0; border-radius: 9px; background: transparent; color: var(--kv-text-2, #c9d5c4); font-size: 12.5px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.kvx .kvx-seg button.is-on { background: var(--kvx-card); color: var(--kv-text, #f1f3e9); box-shadow: 0 1px 4px -1px rgba(0, 0, 0, .3); }
.kvx-empty { display: grid; justify-items: center; gap: 8px; padding: 34px 16px; border-radius: 22px; border: 1px dashed var(--kvx-line); color: var(--kv-text-3, #aebdb4); text-align: center; }
.kvx-empty h3 { margin: 0; color: var(--kv-text, #f1f3e9); font-size: 17px; }
.kvx-empty p { margin: 0; max-inline-size: 420px; font-size: 14px; }

/* ---------- Mastery and Practice (other chunks), restyled to match ---------- */
.kvx-legacy .panel, .kvx-legacy .glass-panel { border-radius: 24px !important; border: 1px solid var(--kvx-line) !important; background: var(--kvx-card) !important; box-shadow: none !important; -webkit-backdrop-filter: none !important; backdrop-filter: none !important; }
.kvx-legacy .kv-eyebrow, .kvx-legacy .eyebrow { font-family: inherit !important; font-size: 12px !important; font-weight: 700 !important; letter-spacing: .04em !important; text-transform: uppercase; color: color-mix(in srgb, var(--c) 72%, var(--kv-text-3, #aebdb4)) !important; }
[dir='rtl'] .kvx-legacy .kv-eyebrow, [dir='rtl'] .kvx-legacy .eyebrow { letter-spacing: 0 !important; }
.kvx-legacy .kv-type-accent { font-style: normal !important; font-family: inherit !important; color: color-mix(in srgb, var(--c) 80%, var(--kv-text, #f1f3e9)) !important; }
.kvx-legacy h1, .kvx-legacy h2, .kvx-legacy h3 { letter-spacing: -.01em; }
.kvx-legacy .button { border-radius: 999px !important; min-block-size: 40px; font-weight: 700 !important; }
.kvx-legacy .button.primary { background: var(--kvx-accent) !important; color: var(--kvx-on) !important; border-color: transparent !important; box-shadow: 0 10px 22px -14px var(--kvx-accent) !important; }
.kvx-legacy .button.ghost { background: transparent !important; border: 1px solid var(--kvx-line) !important; }
.kvx-legacy .button.primary *, .kvx-legacy .button.primary svg { color: inherit !important; opacity: 1; }
.kvx-legacy .button.primary small, .kvx-legacy .button.primary span:not(:first-child) { opacity: .8; }
/* the old monospace labels (tier, radial caption, stat captions) in the app's own font */
.kvx-legacy .level-tier-tag, .kvx-legacy .mini-tier-badge, .kvx-legacy .mastery-radial-content, .kvx-legacy .mastery-radial-content *,
.kvx-legacy .stat-pill, .kvx-legacy .stat-pill *, .kvx-legacy .practice-stat-info *, .kvx-legacy .mastery-signal-strip *,
.kvx-legacy .coursework-kind-badge, .kvx-legacy .retry-label-badge, .kvx-legacy .retry-diff-tag, .kvx-legacy .workout-badge, .kvx-legacy .review-tag {
  font-family: inherit !important; letter-spacing: normal !important; }
.kvx-legacy .level-tier-tag { border-radius: 999px !important; text-transform: none; }
.kvx-legacy .practice-stat-card, .kvx-legacy .stat-pill, .kvx-legacy .mastery-signal-strip > *, .kvx-legacy .mastery-quick-stats > * { border-radius: 18px !important; border: 1px solid var(--kvx-line) !important; background: var(--kvx-card) !important; box-shadow: none !important; }
.kvx-legacy .practice-stat-icon, .kvx-legacy .level-badge-inner { border-radius: 13px !important; background: color-mix(in srgb, var(--c) 16%, transparent) !important; color: color-mix(in srgb, var(--c) 80%, var(--kv-text, #f1f3e9)) !important; }
.kvx-legacy .mastery-hero-card { background: linear-gradient(125deg, color-mix(in srgb, var(--c) 14%, var(--kvx-card)), var(--kvx-card) 62%) !important; border-color: color-mix(in srgb, var(--c) 28%, var(--kvx-line)) !important; }
.kvx-legacy .mastery-radial-svg circle:last-child, .kvx-legacy .mastery-radial-svg [class*='fill'] { stroke: var(--c) !important; }
.kvx-legacy .progress-bar-fill, .kvx-legacy .mastery-bar > *, .kvx-legacy .coursework-progress-fill { background: var(--c) !important; border-radius: 99px; }
.kvx-legacy .mastery-cta-col .button, .kvx-legacy .master-weaknesses-btn { border-radius: 18px !important; }
.kvx-legacy .coursework-empty-card, .kvx-legacy .matrix-empty-state, .kvx-legacy .mastery-evidence-empty { border-radius: 22px !important; border: 1.5px dashed color-mix(in srgb, var(--c) 40%, var(--kvx-line)) !important; background: color-mix(in srgb, var(--c) 5%, transparent) !important; }
.kvx-legacy .premium-coursework-card, .kvx-legacy .retry-question-card, .kvx-legacy .workspace-lesson-mastery-card { border-radius: 20px !important; border: 1px solid var(--kvx-line) !important; background: var(--kvx-card) !important; box-shadow: none !important; transition: transform .18s ease, border-color .18s ease; }
.kvx-legacy .premium-coursework-card:hover, .kvx-legacy .retry-question-card:hover, .kvx-legacy .workspace-lesson-mastery-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--c) 45%, var(--kvx-line)) !important; }
.kvx-legacy .matrix-filter-tabs, .kvx-legacy .mode-selection-pills { border-radius: 14px !important; background: var(--kvx-soft) !important; }
.kvx-legacy .practice-master-header, .kvx-legacy .mastery-progress-view > .panel:first-child { border-radius: 24px !important; }

/* the Edit dialog (os-modal edit-workspace-modal, kept as it was) */
.edit-workspace-modal { border-radius: 26px !important; border: 1px solid var(--kv-line-3, rgba(255,255,255,.12)) !important; background: var(--kv-card, #14201f) !important; }
.edit-workspace-modal .eyebrow { font-family: inherit !important; letter-spacing: .04em !important; font-weight: 700; }
.edit-workspace-modal input, .edit-workspace-modal textarea { border-radius: 14px !important; }
.edit-workspace-modal .button { border-radius: 999px !important; }
.edit-workspace-modal .button.primary { background: var(--kv-accent-fill, #c8f5ad) !important; color: #10201a !important; border-color: transparent !important; }
html[data-theme='light'] .edit-workspace-modal .button.primary { color: #f4f7f0 !important; }

@keyframes kvxUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes kvxFill { from { inline-size: 0; } to { inline-size: var(--w); } }
@keyframes kvxPop { 0% { transform: scale(.7); opacity: 0; } 100% { transform: none; opacity: 1; } }
@keyframes kvxPulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(.6); opacity: .5; } }

@media (max-width: 860px) {
  .kvx-hero { grid-template-columns: 1fr; }
  .kvx-hero__side { grid-template-columns: auto 1fr; justify-items: start; align-items: center; }
  .kvx-hero__side .kvx-ring { grid-row: span 2; inline-size: 84px; block-size: 84px; }
  .kvx-ring b { font-size: 20px; }
  .kvx-ring small { inset-block-end: 18px; }
  .kvx-hero__side .kvx-next { grid-column: 1 / -1; }
  .kvx-src__add { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .kvx { padding: 0 16px 110px; }
  .kvx-hero { gap: 14px; padding: 16px; border-radius: 24px; }
  .kvx-hero__top { flex-wrap: nowrap; align-items: center; }
  .kvx-hero__ico { inline-size: 42px; block-size: 42px; border-radius: 14px; }
  .kvx-tags { padding-top: 0; }
  .kvx-tags .kvx-tag:nth-child(n+3) { display: none; }
  .kvx .kvx-act { inline-size: 36px; padding: 0; justify-content: center; }
  .kvx .kvx-act span { display: none; }
  .kvx-hero h1 { font-size: 24px; }
  .kvx-hero__goal { font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .kvx-fact { padding: 6px 11px; border-radius: 12px; }
  .kvx-fact b { font-size: 16px; }
  .kvx-hero__side { padding: 12px; gap: 6px 12px; border-radius: 18px; }
  .kvx-hero__side .kvx-ring { inline-size: 64px; block-size: 64px; }
  .kvx-hero__side .kvx-ring b { font-size: 16px; margin: 0; }
  .kvx-hero__side .kvx-ring small { display: none; }
  .kvx-ring__label { align-self: center; }
  .kvx-tabsbar { top: 56px; border-radius: 18px; }
  .kvx-mode { inline-size: 100%; justify-content: space-between; padding: 2px 6px 4px; }
  .kvx .kvx-tabs button { padding: 8px 12px; font-size: 14px; }
  .kvx-unit__head { padding: 14px; gap: 10px; align-items: flex-start; }
  .kvx-unit__side .kvx-bar, .kvx-unit__count { display: none; }
  .kvx-lessons { padding: 2px 6px 10px; }
  .kvx-lessons::before { inset-inline-start: 25px; }
  .kvx-lesson { gap: 10px; padding: 10px 4px; }
  .kvx-lesson__go { display: none; }
  .kvx-file { flex-wrap: wrap; }
  .kvx-file__ctl { inline-size: 100%; justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
  .kvx-hero, .kvx-tabsbar, .kvx-panel, .kvx-unit, .kvx-lesson, .kvx-file, .kvx-track, .kvx-ring, .kvx-bar i, .kvx-lesson__dot i { animation: none !important; }
}