/* Kratu LSP - interface refinement (Patch 8n, Nov 2026).
   Builds on the brand tokens in style.css, so every display background (white, cream, blue, green, yellow, grey) still applies.
   Staff pages only: the child's practice screen (body.ks-focus, .kn-session) keeps its own tuned design. */
:root{
  --kr-ink:#04294B; --kr-ink-2:#1A4A72; --kr-ink-3:#4D6F91; --kr-action:#1975BA; --kr-action-dk:#0F5A94; --kr-mark:#CAE406;
  --kr-r-lg:20px; --kr-r-md:14px; --kr-r-sm:10px;
  --kr-gap:clamp(20px, 2.4vw, 32px);
  --kr-shadow:0 1px 2px rgba(4,41,75,.05), 0 8px 24px rgba(4,41,75,.06);
}

/* ---------- header: quieter, with a clear marker for where you are ---------- */
body:not(.ks-focus) .kn-header{ background:var(--kr-ink); box-shadow:0 1px 0 rgba(255,255,255,.06) inset; }
body:not(.ks-focus) .kn-bar{ min-height:64px; padding-top:6px; padding-bottom:6px; }
body:not(.ks-focus) .kn-link{ border-radius:0; padding:10px 4px; margin:0 10px; color:#C8DCF0; font-weight:500; position:relative; }
body:not(.ks-focus) .kn-link:hover{ background:transparent; color:#fff; }
body:not(.ks-focus) .kn-link.active{ background:transparent; color:#fff; font-weight:600; }
body:not(.ks-focus) .kn-link.active::after{ content:""; position:absolute; left:0; right:0; bottom:2px; height:3px; border-radius:3px; background:var(--kr-mark); }
body:not(.ks-focus) .kn-link:focus-visible, .kr a:focus-visible, .kr button:focus-visible, .kr input:focus-visible, .kr textarea:focus-visible{
  outline:3px solid #2499E2; outline-offset:3px; border-radius:6px; }
body:not(.ks-focus) .kn-footer{ background:transparent; border-top:1px solid var(--line); color:var(--kr-ink-3); }
body:not(.ks-focus) .kn-main{ padding-top:clamp(24px, 3vw, 40px); }

/* ---------- shared panels and tables on every staff page ---------- */
body:not(.ks-focus) .ks-panel{ border-radius:var(--kr-r-lg); box-shadow:var(--kr-shadow); }
body:not(.ks-focus) .ks-card{ border-radius:var(--kr-r-lg); }
body:not(.ks-focus) .ks-table thead th{ font-weight:600; letter-spacing:.01em; background:transparent; border-bottom:1px solid var(--line); }
body:not(.ks-focus) .ks-head h1{ letter-spacing:-.01em; }
body:not(.ks-focus) .ks-btn{ border-radius:var(--kr-r-sm); }

/* ---------- Content review ---------- */
.kr{ display:flex; flex-direction:column; gap:var(--kr-gap); color:var(--kr-ink); }
.kr-sr{ position:absolute!important; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
.kr h1, .kr h2{ font-family:var(--font-display); font-weight:400; color:var(--kr-ink); margin:0; }
.kr h1{ font-size:clamp(2.2rem, 3.4vw, 3rem); line-height:1.08; letter-spacing:-.012em; }
.kr h2{ font-size:clamp(1.6rem, 2.2vw, 2rem); line-height:1.15; }
.kr h3{ font-family:var(--font-body); font-weight:600; font-size:1.125rem; line-height:1.35; margin:0; color:var(--kr-ink); }
.kr p{ margin:0; }
.kr-muted{ color:var(--kr-ink-3); font-size:15px; }

.kr-intro{ max-width:46rem; display:flex; flex-direction:column; gap:10px; }
.kr-intro p{ font-family:var(--font-read); font-size:17px; line-height:1.6; color:var(--kr-ink-2); }

.kr-jump{ display:flex; flex-wrap:wrap; gap:8px; }
.kr-jump a{ display:inline-flex; align-items:center; min-height:40px; padding:0 16px; border-radius:999px; border:1px solid var(--line-strong); background:var(--surface);
  color:var(--kr-ink); font-weight:600; font-size:15px; text-decoration:none; }
.kr-jump a:hover{ border-color:var(--kr-action); color:var(--kr-action-dk); }

/* a subject, and its book as a shelf of chapters */
.kr-subject{ background:var(--surface); border:1px solid var(--line); border-radius:var(--kr-r-lg); box-shadow:var(--kr-shadow); padding:clamp(22px, 2.6vw, 34px); scroll-margin-top:24px; }
.kr-subject-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:16px 32px; padding-bottom:20px; margin-bottom:8px; border-bottom:1px solid var(--line); }
.kr-subject-book{ margin-top:6px!important; color:var(--kr-ink-2); font-size:16px; }
.kr-tally{ display:flex; gap:28px; margin:0; }
.kr-tally div{ display:flex; flex-direction:column-reverse; }
.kr-tally dt{ font-weight:500; font-size:14px; color:var(--kr-ink-3); }
.kr-tally dd{ margin:0; font-family:var(--font-display); font-size:2rem; line-height:1.1; color:var(--kr-ink); }
.kr-tally dd span{ font-family:var(--font-body); font-size:15px; color:var(--kr-ink-3); }

.kr-shelf{ list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); column-gap:28px; }
.kr-ch{ border-bottom:1px solid var(--line); }
.kr-ch-in{ display:grid; grid-template-columns:3.2rem minmax(0, 1fr) auto auto; align-items:center; gap:4px 14px; min-height:76px; padding:12px 6px; color:inherit; text-decoration:none; border-radius:var(--kr-r-sm); }
.kr-num{ font-family:var(--font-display); font-size:2.1rem; line-height:1; color:var(--kr-action); text-align:center; font-variant-numeric:lining-nums; }
.kr-ch-text{ display:flex; flex-direction:column; gap:2px; min-width:0; }
.kr-ch-title{ font-weight:600; font-size:17px; line-height:1.3; }
.kr-ch-meta{ font-size:14px; color:var(--kr-ink-3); }
.kr-chev{ color:var(--kr-ink-3); transition:transform .15s ease; }
.kr-ch.is-built .kr-ch-in:hover{ background:var(--pale); }
.kr-ch.is-built .kr-ch-in:hover .kr-chev{ transform:translateX(3px); color:var(--kr-action); }
.kr-ch.is-built .kr-ch-in:hover .kr-ch-title{ color:var(--kr-action-dk); }
.kr-ch.is-todo .kr-num{ color:var(--line-strong); }
.kr-ch.is-todo .kr-ch-title{ font-weight:500; color:var(--kr-ink-3); }

.kr-state{ display:inline-flex; align-items:center; gap:7px; min-height:28px; padding:0 11px; border-radius:999px; font-size:13.5px; font-weight:600; white-space:nowrap; background:#EEF2F6; color:#3D5A78; }
.kr-state::before{ content:""; width:7px; height:7px; border-radius:50%; background:currentColor; opacity:.75; }
.kr-state.is-approve{ background:#E1F1DA; color:#1F6E1C; }
.kr-state.is-change{ background:#FBE9E7; color:#8C1D18; }
.kr-foot{ color:var(--kr-ink-3); font-size:14.5px; }
.kr-empty{ background:var(--surface); border:1px dashed var(--line-strong); border-radius:var(--kr-r-lg); padding:32px; display:flex; flex-direction:column; gap:8px; }

/* ---------- a chapter page ---------- */
.kr-crumbs ol{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; align-items:center; gap:4px; font-size:15px; }
.kr-crumbs li{ display:flex; align-items:center; gap:4px; color:var(--kr-ink-3); }
.kr-crumbs li + li::before{ content:""; width:7px; height:7px; border-right:2px solid var(--line-strong); border-top:2px solid var(--line-strong); transform:rotate(45deg); margin:0 8px 0 4px; }
.kr-crumbs a{ color:var(--kr-ink-2); font-weight:500; text-decoration:none; min-height:36px; display:inline-flex; align-items:center; }
.kr-crumbs a:hover{ color:var(--kr-action-dk); text-decoration:underline; text-underline-offset:3px; }
.kr-crumbs [aria-current]{ color:var(--kr-ink); font-weight:600; }
.kr-chapter{ gap:clamp(18px, 2vw, 26px); }

.kr-hero{ display:grid; grid-template-columns:auto minmax(0, 1fr) auto; align-items:center; gap:12px 28px; background:var(--surface); border:1px solid var(--line);
  border-radius:var(--kr-r-lg); box-shadow:var(--kr-shadow); padding:clamp(22px, 2.6vw, 34px) clamp(22px, 3vw, 40px); position:relative; overflow:hidden; }
.kr-hero::before{ content:""; position:absolute; left:0; top:0; bottom:0; width:6px; background:var(--kr-action); }
.kr-bignum{ font-family:var(--font-display); font-size:clamp(4rem, 7vw, 6rem); line-height:.85; color:var(--kr-action); font-variant-numeric:lining-nums; }
.kr-hero-text{ display:flex; flex-direction:column; gap:8px; }
.kr-hero-text p{ color:var(--kr-ink-2); font-size:16px; }
.kr-hero-status{ display:flex; flex-direction:column; align-items:flex-end; gap:8px; text-align:right; }
.kr-hero-last{ font-size:14px; color:var(--kr-ink-3); }

.kr-layout{ display:grid; grid-template-columns:220px minmax(0, 1fr); gap:var(--kr-gap); align-items:start; }
.kr-toc{ position:sticky; top:20px; padding:6px 0; }
.kr-toc-h{ font-size:14px; font-weight:600; color:var(--kr-ink-3); margin:0 0 8px 14px!important; }
.kr-toc ol{ list-style:none; margin:0; padding:0; border-left:2px solid var(--line); }
.kr-toc a{ display:flex; align-items:center; min-height:40px; padding:0 14px; margin-left:-2px; border-left:2px solid transparent; color:var(--kr-ink-2); text-decoration:none; font-size:15px; font-weight:500; }
.kr-toc a:hover{ color:var(--kr-action-dk); border-left-color:var(--kr-action); }
.kr-toc a.is-here{ color:var(--kr-ink); font-weight:600; border-left-color:var(--kr-mark); }

.kr-main{ display:flex; flex-direction:column; gap:var(--kr-gap); min-width:0; }
.kr-sec{ background:var(--surface); border:1px solid var(--line); border-radius:var(--kr-r-lg); padding:clamp(22px, 2.6vw, 34px); display:flex; flex-direction:column; gap:16px; scroll-margin-top:20px; }
.kr-sec-head{ display:flex; flex-direction:column; gap:8px; }
.kr-sec-head p{ color:var(--kr-ink-2); font-size:15.5px; max-width:44rem; }
.kr-row{ flex-direction:row; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px; }
.kr-about{ font-family:var(--font-read); font-size:17.5px; line-height:1.7; color:var(--kr-ink); max-width:44rem; }
.kr-list{ margin:0; padding-left:1.25rem; display:flex; flex-direction:column; gap:8px; font-family:var(--font-read); font-size:16px; line-height:1.6; color:var(--kr-ink); max-width:46rem; }
.kr-list li::marker{ color:var(--kr-action); }
.kr-source{ display:flex; flex-direction:column; gap:10px; }
.kr-source + .kr-source{ border-top:1px solid var(--line); padding-top:16px; }
.kr-source-h{ font-weight:600; font-size:15px; color:var(--kr-ink-2); }

.kr-topics{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; }
.kr-topic{ display:grid; grid-template-columns:2.6rem minmax(0, 1fr) auto; gap:6px 18px; align-items:start; padding:20px 0; border-top:1px solid var(--line); }
.kr-topic:first-child{ border-top:0; padding-top:6px; }
.kr-topic-num{ font-family:var(--font-display); font-size:1.9rem; line-height:1; color:var(--kr-action); text-align:center; padding-top:2px; }
.kr-topic-body{ display:flex; flex-direction:column; gap:8px; min-width:0; }
.kr-topic-covers{ font-family:var(--font-read); font-size:16px; line-height:1.6; color:var(--kr-ink); max-width:44rem; }
.kr-topic-outcome{ font-size:14.5px; color:var(--kr-ink-2); max-width:44rem; }
.kr-topic-outcome span{ font-weight:600; margin-right:4px; }
.kr-facts{ list-style:none; margin:2px 0 0; padding:0; display:flex; flex-wrap:wrap; gap:8px; }
.kr-facts li{ font-size:14px; color:var(--kr-ink-2); background:var(--pale); border-radius:999px; padding:4px 12px; }
.kr-topic-act{ padding-top:2px; }

.kr-check{ background:#FFF9E5; border-color:#EED9A0; }
body[data-bg="cream"] .kr-check, body[data-bg="yellow"] .kr-check{ background:#FFFDF3; }

.kr-btn{ display:inline-flex; align-items:center; justify-content:center; gap:8px; min-height:44px; padding:0 18px; border-radius:var(--kr-r-sm); font-family:var(--font-body);
  font-weight:600; font-size:15px; text-decoration:none; cursor:pointer; white-space:nowrap; border:1px solid transparent; }
.kr-btn-primary{ background:var(--kr-action); color:#fff; }
.kr-btn-primary:hover{ background:var(--kr-action-dk); color:#fff; }
.kr-btn-quiet{ background:var(--surface); color:var(--kr-ink); border-color:var(--line-strong); }
.kr-btn-quiet:hover{ border-color:var(--kr-action); color:var(--kr-action-dk); background:var(--pale); }

.kr-form{ display:flex; flex-direction:column; gap:14px; }
.kr-choices{ border:0; margin:0; padding:0; display:grid; grid-template-columns:repeat(3, minmax(0, 1fr)); gap:12px; }
.kr-choice{ display:flex; gap:12px; align-items:flex-start; padding:14px 16px; border:1px solid var(--line-strong); border-radius:var(--kr-r-md); cursor:pointer; background:var(--surface); }
.kr-choice input{ width:20px; height:20px; margin-top:2px; accent-color:var(--kr-action); flex:0 0 auto; }
.kr-choice span{ display:flex; flex-direction:column; gap:2px; }
.kr-choice small{ font-size:14px; color:var(--kr-ink-3); }
.kr-choice:has(input:checked){ border-color:var(--kr-action); box-shadow:0 0 0 1px var(--kr-action) inset; background:var(--pale); }
.kr-label{ font-weight:600; font-size:15px; }
.kr-label span{ font-weight:400; color:var(--kr-ink-3); }
.kr-form textarea{ width:100%; border:1px solid var(--line-strong); border-radius:var(--kr-r-md); padding:12px 14px; font-family:var(--font-read); font-size:16px; background:var(--surface); color:var(--kr-ink); }
.kr-hist-h{ margin-top:8px!important; }
.kr-hist{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; }
.kr-hist li{ display:grid; grid-template-columns:7.5rem minmax(0, 1fr); gap:12px; padding:10px 0; border-top:1px solid var(--line); font-size:15px; }
.kr-hist-when{ color:var(--kr-ink-3); }

@media (max-width: 1000px){
  .kr-layout{ grid-template-columns:1fr; }
  .kr-toc{ position:static; }
  .kr-toc ol{ display:flex; flex-wrap:wrap; border-left:0; gap:6px; }
  .kr-toc a{ border:1px solid var(--line-strong); border-radius:999px; margin:0; min-height:38px; }
  .kr-toc a:hover{ border-left-color:var(--kr-action); }
  .kr-choices{ grid-template-columns:1fr; }
}
@media (max-width: 860px){
  .kr-shelf{ grid-template-columns:1fr; }
  .kr-hero{ grid-template-columns:auto minmax(0, 1fr); }
  .kr-hero-status{ grid-column:1 / -1; align-items:flex-start; text-align:left; flex-direction:row; flex-wrap:wrap; }
}
@media (max-width: 560px){
  .kr-ch-in{ grid-template-columns:2.6rem minmax(0, 1fr) auto; }
  .kr-ch-in .kr-state{ grid-column:2; justify-self:start; }
  .kr-chev{ grid-row:1; grid-column:3; }
  .kr-topic{ grid-template-columns:2rem minmax(0, 1fr); }
  .kr-topic-act{ grid-column:2; }
}
@media (max-width: 720px){ body:not(.ks-focus) .kn-nav{ flex-wrap:nowrap; overflow-x:auto; max-width:100%; scrollbar-width:none; } body:not(.ks-focus) .kn-link{ white-space:nowrap; flex:0 0 auto; } }
@media (prefers-reduced-motion: reduce){ .kr-chev{ transition:none; } }