/* ---------------------------------------------------------------------------
 * SEO Content Factory — app shell design system
 * ---------------------------------------------------------------------------
 * App-Building Bible Part I, principle 5: styles are a real external .css file
 * served as a static asset (content-hashed, immutable-cached) and linked with
 * <link rel="stylesheet">. No inline <style> blocks.
 *
 * Design tokens live in :root below. The `brand` object in templates/layout.ts
 * is the TypeScript mirror of these values (used by server-rendered inline
 * chip/badge colors that are data-driven, not style-system chrome). Keep the
 * two in sync: the hex values here match templates/layout.ts `brand`.
 * ------------------------------------------------------------------------- */

/* ── Reset ─────────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font);font-size:14px;line-height:1.5;color:var(--ink);background:var(--bg);min-height:100vh}
h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
img,svg{display:block}

/* ── Custom properties ─────────────────────────────────────────────────── */
:root{
  --primary:#4951EF;
  --primary-hover:#3B43D6;
  --primary-light:#EEEFFE;
  --c-primary-subtle:#EEEFFE;
  --bg:#F9FAFB;
  --surface:#FFFFFF;
  --ink:#09090B;
  --muted:#71717A;
  --border:#E4E4E7;
  --border-light:#F4F4F5;
  --radius-card:16px;
  --radius-sm:12px;
  --radius-chip:8px;
  --radius-input:10px;
  --shadow:0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.02);
  --shadow-md:0 4px 12px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.04);
  --font:'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;
  --sidebar-w:240px;
  --topbar-h:56px;
  --text:#09090B;
  --text-2:#71717A;
  --text-3:#A1A1AA;
  --bg-muted:#F4F4F5;
  --bg-surface:#FFFFFF;
  --success:#059669;
  --warning:#D97706;
  --error:#DC2626;
  --radius-md:12px;
  --radius-lg:16px;
  --primary-muted:#EEEFFE;
  --primary-text:#4951EF;
}

/* ── Layout structure ──────────────────────────────────────────────────── */
body{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:1fr;min-height:100vh}
body.full-bleed{display:block;background:var(--bg)}
.sidebar{grid-column:1;grid-row:1;position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:40;
  overflow-y:auto;overscroll-behavior:contain}
.main-area{grid-column:2;grid-row:1;display:flex;flex-direction:column;min-height:100vh;min-width:0}
.mobile-header{display:none}

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px 20px 16px;border-bottom:1px solid var(--border-light)}
.sidebar-logo{display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sidebar-title{font-size:14px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.sidebar-nav{flex:1;padding:12px 8px;display:flex;flex-direction:column;gap:1px}
.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-chip);
  color:var(--muted);font-size:13px;font-weight:500;transition:background .1s,color .1s}
.nav-item:hover{background:var(--border-light);color:var(--ink)}
.nav-active{background:var(--primary-light) !important;color:var(--primary) !important;font-weight:600}
.nav-active .nav-icon{color:var(--primary)}
.nav-icon{flex-shrink:0;color:var(--muted);transition:color .1s}
.nav-item:hover .nav-icon{color:var(--ink)}
.nav-divider{height:1px;background:var(--border-light);margin:8px 12px}

.sidebar-footer{padding:12px 8px 16px;border-top:1px solid var(--border-light)}
.sidebar-cmd{display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;border-radius:var(--radius-chip);
  border:1px solid var(--border);color:var(--muted);font-size:13px;transition:border-color .15s,background .15s}
.sidebar-cmd:hover{border-color:var(--primary);background:var(--primary-light)}
.sidebar-cmd svg{flex-shrink:0}
.sidebar-cmd span{flex:1;text-align:left}
.sidebar-cmd kbd{font-size:11px;font-family:var(--font);padding:2px 6px;background:var(--border-light);border-radius:4px;color:var(--muted)}

/* ── Top bar ───────────────────────────────────────────────────────────── */
.top-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 28px;border-bottom:1px solid var(--border);background:var(--surface);
  min-height:var(--topbar-h);flex-shrink:0}
.top-bar-left{display:flex;align-items:baseline;gap:12px;min-width:0}
.page-title{font-size:18px;font-weight:700;letter-spacing:-.02em;white-space:nowrap}
.page-desc{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-bar-right{display:flex;align-items:center;gap:8px;flex-shrink:0}

.search-box{position:relative;display:flex;align-items:center}
.search-icon{position:absolute;left:10px;color:var(--muted);pointer-events:none}
.search-input{height:34px;width:200px;padding:0 36px 0 32px;border:1px solid var(--border);border-radius:var(--radius-input);
  background:var(--bg);font-size:13px;color:var(--muted);cursor:pointer;transition:border-color .15s}
.search-input:hover{border-color:var(--primary)}
.search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.search-kbd{position:absolute;right:8px;font-size:11px;font-family:var(--font);padding:2px 6px;
  background:var(--border-light);border-radius:4px;color:var(--muted);pointer-events:none}

.header-icon-btn{width:34px;height:34px;border-radius:var(--radius-chip);display:flex;align-items:center;
  justify-content:center;color:var(--muted);transition:background .15s,color .15s}
.header-icon-btn:hover{background:var(--border-light);color:var(--ink)}
.header-icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.avatar{width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;flex-shrink:0;cursor:pointer}

/* ── Avatar circles (for user references in content) ───────────────────── */
.avatar-circle{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;
  color:#fff;font-size:10px;font-weight:700;flex-shrink:0;line-height:1}

/* ── Stat pills bar ────────────────────────────────────────────────────── */
.stat-pills{display:flex;align-items:center;gap:0;padding:10px 28px;background:var(--surface);
  border-bottom:1px solid var(--border);overflow-x:auto;flex-shrink:0}
.stat-pill{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;padding:0 2px}
.stat-pill-inline{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.stat-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}
.stat-pill-value{font-size:13px;font-weight:600;color:var(--ink)}
.stat-pill-label{font-size:12px;color:var(--muted)}
.stat-divider{width:1px;height:14px;background:var(--border);margin:0 12px;flex-shrink:0}

/* ── Content area ──────────────────────────────────────────────────────── */
.content{flex:1;padding:24px 28px 40px;overflow-x:hidden}

/* ── Cards ─────────────────────────────────────────────────────────────── */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow)}
.card-header{padding:16px 20px 12px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-title{font-size:13px;font-weight:600;color:var(--ink);text-transform:uppercase;letter-spacing:.04em}
.card-body{padding:0 20px 16px}
.card-footer{padding:12px 20px;border-top:1px solid var(--border-light);font-size:12px;color:var(--muted)}

/* ── Chips ─────────────────────────────────────────────────────────────── */
.chip{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-chip);
  font-size:12px;font-weight:600;white-space:nowrap;line-height:1.4}

/* ── Type icons ────────────────────────────────────────────────────────── */
.type-icon{display:inline-flex;align-items:center;color:var(--muted)}
.type-icon svg{display:inline}

/* ── Rank trend ────────────────────────────────────────────────────────── */
.rank-up{color:#059669;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}
.rank-down{color:#DC2626;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}
.rank-flat{color:var(--muted);font-size:12px}

/* ── Score bar ─────────────────────────────────────────────────────────── */
.score-bar-wrap{display:flex;align-items:center;gap:8px}
.score-bar-track{flex:1;height:6px;background:var(--border-light);border-radius:3px;overflow:hidden;min-width:48px}
.score-bar-fill{height:100%;border-radius:3px;transition:width .3s ease}
.score-bar-label{font-size:12px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;min-width:24px;text-align:right}

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-input);
  font-size:13px;font-weight:600;transition:background .15s,box-shadow .15s,transform .08s;line-height:1}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-secondary{background:var(--surface);color:var(--ink);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border-light);border-color:var(--muted)}
.btn-ghost{color:var(--muted);padding:8px 12px}
.btn-ghost:hover{background:var(--border-light);color:var(--ink)}
.btn-sm{padding:6px 12px;font-size:12px}
.btn-lg{padding:12px 24px;font-size:15px;border-radius:var(--radius-sm)}
.btn .btn-label{display:inline}

/* ── Tables ────────────────────────────────────────────────────────────── */
.data-table{width:100%;font-size:13px}
.data-table th{text-align:left;padding:8px 12px;font-size:11px;font-weight:600;text-transform:uppercase;
  letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--border);background:var(--bg);
  position:sticky;top:0;white-space:nowrap}
.data-table td{padding:10px 12px;border-bottom:1px solid var(--border-light);vertical-align:middle}
.data-table tbody tr{transition:background .1s}
.data-table tbody tr:hover{background:var(--border-light)}
.data-table .col-title{font-weight:500;color:var(--ink);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.data-table .col-muted{color:var(--muted);font-size:12px}
.data-table .col-num{font-variant-numeric:tabular-nums;text-align:right;font-size:12px;font-weight:500}

/* ── Form elements ─────────────────────────────────────────────────────── */
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:13px;font-weight:600;color:var(--ink)}
.form-hint{font-size:12px;color:var(--muted)}
.form-input{height:40px;padding:0 12px;border:1px solid var(--border);border-radius:var(--radius-input);
  background:var(--surface);font-size:14px;transition:border-color .15s,box-shadow .15s;width:100%}
.form-input:hover{border-color:var(--muted)}
.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-input::placeholder{color:var(--muted)}
textarea.form-input{height:auto;padding:10px 12px;resize:vertical;min-height:80px}
select.form-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}

/* ── Empty state ───────────────────────────────────────────────────────── */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:48px 24px;text-align:center}
.empty-state-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--border-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--muted)}
.empty-state-title{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:4px}
.empty-state-desc{font-size:13px;color:var(--muted);max-width:320px;line-height:1.6}
.empty-state .btn{margin-top:16px}

/* ── Progress bar ──────────────────────────────────────────────────────── */
.progress-bar{height:6px;background:var(--border-light);border-radius:3px;overflow:hidden}
.progress-bar-fill{height:100%;border-radius:3px;transition:width .3s ease}

/* ── Metric block ──────────────────────────────────────────────────────── */
.metric{display:flex;flex-direction:column;gap:2px}
.metric-value{font-size:24px;font-weight:700;letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums}
.metric-label{font-size:12px;color:var(--muted);font-weight:500}
.metric-sm .metric-value{font-size:18px}

/* ── Section headings ──────────────────────────────────────────────────── */
.section-heading{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;
  letter-spacing:.04em;margin-bottom:12px}

/* ── Grid layouts ──────────────────────────────────────────────────────── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}

/* ── Inline list ───────────────────────────────────────────────────────── */
.list-item{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border-light)}
.list-item:last-child{border-bottom:none}

/* ── Badge / count ─────────────────────────────────────────────────────── */
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;
  padding:0 6px;border-radius:10px;font-size:11px;font-weight:700;background:var(--border-light);color:var(--muted)}
.badge-primary{background:var(--primary);color:#fff}
.badge-danger{background:#FEF2F2;color:#DC2626}

/* ── Sidebar overlay (mobile) ──────────────────────────────────────────── */
.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:35;opacity:0;pointer-events:none;transition:opacity .2s}
.overlay-visible{opacity:1;pointer-events:auto}

/* ── Command palette ───────────────────────────────────────────────────── */
.cmd-palette-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:100;
  display:flex;align-items:flex-start;justify-content:center;padding-top:min(20vh,160px);
  opacity:0;pointer-events:none;transition:opacity .15s}
.cmd-visible{opacity:1;pointer-events:auto}
.cmd-palette{width:100%;max-width:560px;background:var(--surface);border-radius:var(--radius-card);
  box-shadow:0 24px 48px rgba(0,0,0,.15),0 4px 12px rgba(0,0,0,.1);overflow:hidden;
  transform:translateY(-8px);transition:transform .15s}
.cmd-visible .cmd-palette{transform:translateY(0)}
.cmd-palette-input-wrap{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border)}
.cmd-palette-search-icon{flex-shrink:0;color:var(--muted)}
.cmd-palette-input{flex:1;border:none;background:none;font-size:15px;outline:none}
.cmd-palette-input::placeholder{color:var(--muted)}
.cmd-palette-body{max-height:360px;overflow-y:auto;padding:8px}
.cmd-group{padding:4px 0}
.cmd-group-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);padding:8px 12px 4px}
.cmd-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 12px;border-radius:var(--radius-chip);
  font-size:13px;font-weight:500;color:var(--ink);text-align:left;transition:background .1s}
.cmd-item:hover,.cmd-item:focus{background:var(--border-light);outline:none}
.cmd-item svg{flex-shrink:0;color:var(--muted)}
.cmd-palette-footer{display:flex;align-items:center;gap:16px;padding:10px 20px;border-top:1px solid var(--border);
  font-size:11px;color:var(--muted)}
.cmd-palette-footer kbd{font-family:var(--font);font-size:11px;padding:1px 5px;background:var(--border-light);
  border-radius:3px;margin-right:4px}


/* ── Shared utilities (used by multiple page templates) ────────────────── */
.stats-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.filter-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 0 16px}
.filter-label{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-card)}
.td-num{text-align:right;font-variant-numeric:tabular-nums;font-size:12px}
.text-sm{font-size:12px}
.text-2{color:var(--muted)}
.text-3{color:#A1A1AA}
.section-title{font-size:16px;font-weight:600;letter-spacing:-.01em;margin-bottom:4px}
.section-subtitle{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.5}
.section{margin-bottom:32px}
.chip-error{background:#FEF2F2;color:#DC2626}
.chip-warning{background:#FFF7ED;color:#D97706}
.chip-success{background:#ECFDF5;color:#059669}
.btn-error{background:#FEF2F2;color:#DC2626;border:1px solid #FECACA}
.btn-error:hover{background:#FEE2E2}

/* ── Command-palette item hidden state (principle 17: `hidden`, not style) ─ */
.cmd-item[hidden],.cmd-group[hidden]{display:none !important}

/* ── Scrollbar ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* ── Focus ─────────────────────────────────────────────────────────────── */
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ── Reduced motion ────────────────────────────────────────────────────── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;scroll-behavior:auto !important}
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media(max-width:768px){
  body{display:flex;flex-direction:column;grid-template-columns:1fr}
  /* RESP-1: off-canvas drawer. The sidebar slides in from the left; a class
     (not inline style) drives the transform so the strict CSP is unaffected. */
  .sidebar{transform:translateX(-100%);transition:transform .2s ease;width:min(84vw,300px);
    box-shadow:none}
  .sidebar-open{transform:translateX(0);box-shadow:0 0 40px rgba(0,0,0,.18)}
  .mobile-header{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--surface);
    border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}
  /* Touch targets >=44px (frontend-design Step 6). */
  .mobile-menu-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    border-radius:var(--radius-chip);color:var(--muted);flex-shrink:0}
  .mobile-menu-btn:hover{background:var(--border-light)}
  .mobile-header .header-icon-btn{width:44px;height:44px}
  .mobile-title{font-size:15px;font-weight:600;flex:1;min-width:0;overflow:hidden;
    text-overflow:ellipsis;white-space:nowrap}
  .main-area{grid-column:1}
  .top-bar{display:none}
  .stat-pills{padding:10px 16px}
  .content{padding:16px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .search-box{display:none}
  .btn .btn-label{display:none}
  /* Comfortable tap sizing for the primary controls on mobile. */
  .btn{min-height:40px}
  .btn-sm{min-height:36px}
  .nav-item{padding:11px 12px;min-height:44px}
  .cmd-item{min-height:44px}

  /* RESP-2: collapsing header search. The mobile search row (hidden by default
     via the `hidden` attribute — principle 17) expands full-width below the
     header when the search icon is tapped. */
  .mobile-search-row{display:block;padding:8px 12px 10px;background:var(--surface);
    border-bottom:1px solid var(--border);position:sticky;top:60px;z-index:29}
  .mobile-search-box{display:flex;width:100%}
  .mobile-search-box .search-input{width:100%;height:40px;cursor:pointer}

  /* Dense tables scroll horizontally rather than break the layout.
     Any .data-table that is not already inside a .table-wrap gets its own
     momentum-scrolling container; the sticky header (which fights horizontal
     scroll on touch) is disabled at this width. */
  .table-wrap{-webkit-overflow-scrolling:touch}
  .content > .data-table,.card-body > .data-table{display:block;overflow-x:auto;
    -webkit-overflow-scrolling:touch;width:100%}
  .data-table th{position:static}
  .data-table th,.data-table td{white-space:nowrap}
  .data-table .col-title{max-width:200px}
}
@media(max-width:480px){
  .stat-pills{gap:0}
  .stat-divider{margin:0 8px}
  .sidebar{width:88vw}
}

/* Hide the mobile-only search row on desktop regardless of its `hidden` state
   handling; on desktop the top-bar search is used instead. */
@media(min-width:769px){
  .mobile-search-row{display:none}
}

/* Body scroll lock while the mobile drawer is open (principle 17: a class,
   not an inline style). */
body.scroll-locked{overflow:hidden}

/* ── Table of contents (RESP-4 / RESP-5) ──────────────────────────────────
 * The inline panel is injected at the top of .content by shell.ts. The floating
 * hamburger + its panel live at the body level and are revealed only once the
 * inline panel scrolls out of view. All start hidden via the `hidden` attribute.
 * ------------------------------------------------------------------------- */
.toc-inline{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:14px 18px;margin-bottom:24px;box-shadow:var(--shadow)}
.toc-heading{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);margin-bottom:8px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1px}
.toc-item{margin:0}
.toc-item-sub{padding-left:14px}
.toc-link{display:block;padding:6px 8px;border-radius:var(--radius-chip);font-size:13px;
  color:var(--muted);line-height:1.4;transition:background .1s,color .1s;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc-link:hover{background:var(--border-light);color:var(--ink)}
.toc-top-link{font-weight:600;color:var(--primary);margin-bottom:4px}

.toc-fab{position:fixed;right:20px;bottom:20px;z-index:45;width:48px;height:48px;
  border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;
  justify-content:center;box-shadow:var(--shadow-md);transition:background .15s,transform .08s}
.toc-fab:hover{background:var(--primary-hover)}
.toc-fab:active{transform:scale(.96)}
.toc-fab:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.toc-fab[hidden]{display:none}

.toc-fab-panel{position:fixed;right:20px;bottom:78px;z-index:46;width:min(280px,calc(100vw - 40px));
  max-height:min(60vh,420px);overflow-y:auto;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-md);padding:14px 16px}
.toc-fab-panel[hidden]{display:none}
.toc-fab-scrim{position:fixed;inset:0;z-index:44;background:transparent}
.toc-fab-scrim[hidden]{display:none}

/* ── Utility classes (replace CSP-dropped inline style= attributes) ─────────
 * App-Building Bible principle 17: the strict style-src 'self' policy silently
 * drops inline style= attributes. Static utility styles that used to be inlined
 * across the page templates live here as reusable classes. Values mirror the
 * `brand` tokens in templates/layout.ts / the :root custom properties above so
 * nothing changes visually. Genuinely dynamic styles (data-driven widths and
 * colors) are applied by the client modules via el.style.setProperty (CSSOM,
 * which is allowed) reading data-* attributes.
 * ------------------------------------------------------------------------- */

/* text colors */
.u-muted{color:var(--muted)}
.u-ink{color:var(--ink)}
.u-text-2{color:var(--text-2)}
.u-text-3{color:var(--text-3)}
.u-primary{color:var(--primary)}
.u-success{color:var(--success)}
.u-warning{color:var(--warning)}
.u-error{color:var(--error)}
.u-color-EA580C{color:#EA580C}

/* font sizes */
.u-fs-10{font-size:10px}
.u-fs-11{font-size:11px}
.u-fs-12{font-size:12px}
.u-fs-13{font-size:13px}
.u-fs-14{font-size:14px}
.u-fs-16{font-size:16px}
.u-fs-18{font-size:18px}

/* font weights */
.u-fw-500{font-weight:500}
.u-fw-600{font-weight:600}
.u-fw-700{font-weight:700}

/* mono / font family */
.u-mono{font-family:var(--font-mono)}
.u-font{font-family:var(--font)}

/* margins */
.u-mt-2{margin-top:2px}
.u-mt-4{margin-top:4px}
.u-mt-16{margin-top:16px}
.u-mb-4{margin-bottom:4px}
.u-mb-8{margin-bottom:8px}
.u-mb-12{margin-bottom:12px}
.u-mb-16{margin-bottom:16px}
.u-ml-auto{margin-left:auto}

/* line-height */
.u-lh-15{line-height:1.5}
.u-lh-17{line-height:1.7}

/* layout helpers */
.u-hidden{display:none}
.u-flex{display:flex}
.u-flex-col{display:flex;flex-direction:column}
.u-flex-center{display:flex;align-items:center}
.u-inline-flex{display:inline-flex}
.u-items-center{align-items:center}
.u-items-end{align-items:end}
.u-justify-between{justify-content:space-between}
.u-justify-end{justify-content:flex-end}
.u-wrap{flex-wrap:wrap}
.u-nowrap{white-space:nowrap}
.u-flex-1{flex:1}
.u-min-w-0{min-width:0}
.u-w-full{width:100%}
.u-w-auto{width:auto}
.u-ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.u-tabular{font-variant-numeric:tabular-nums}
.u-pre-wrap{white-space:pre-wrap}
.u-text-center{text-align:center}
.u-text-right{text-align:right}
.u-break-all{word-break:break-all}

/* gaps */
.u-gap-0{gap:0}
.u-gap-2{gap:2px}
.u-gap-3{gap:3px}
.u-gap-4{gap:4px}
.u-gap-6{gap:6px}
.u-gap-8{gap:8px}
.u-gap-10{gap:10px}
.u-gap-12{gap:12px}
.u-gap-16{gap:16px}

/* composite rows used repeatedly in templates */
.u-row-between{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:8px}
.u-section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.u-empty-pad{text-align:center;padding:80px 24px}
.u-empty-pad-plain{padding:80px 24px}

/* small labeled field */
.u-field-label{font-size:11px;font-weight:600;color:var(--muted);display:block;margin-bottom:4px}
.u-field-title{font-size:14px;font-weight:600;color:var(--muted);margin-bottom:4px}

/* status/segmented button group */
.u-seg-left{border-radius:var(--radius-input) 0 0 var(--radius-input)}
.u-seg-right{border-radius:0 var(--radius-input) var(--radius-input) 0}
.u-seg-mid{border-radius:0;border-left:none;border-right:none;font-weight:700}
/* fixed square icon sizes (static SVG dimensions) */
.u-icon-14{width:14px;height:14px}
.u-icon-32{width:32px;height:32px}
.u-icon-48{width:48px;height:48px}

/* score bar (dynamic width/color via --bar-w / --bar-c custom props) */
.score-bar-fill{width:var(--bar-w,0%);background:var(--bar-c,var(--primary))}
/* stat dot (dynamic bg via --dot-c) */
.stat-dot-dyn{background:var(--dot-c,var(--muted))}
/* generic chip with data-driven colors via --chip-bg / --chip-fg */
.chip-dyn{background:var(--chip-bg,var(--border-light));color:var(--chip-fg,var(--muted))}
/* avatar circle with data-driven size/bg/font-size (handler sets --av-* ) */
.avatar-dyn{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;
  color:#fff;font-weight:600;flex-shrink:0;line-height:1;
  width:var(--av-size,24px);height:var(--av-size,24px);
  background:var(--av-bg,var(--primary));font-size:var(--av-fs,10px)}

/* ── Additional utilities (calendar/board static style= migration) ─────────
 * More single-purpose classes mirroring previously-inlined static styles.
 * Values match the :root tokens / prior inline hex so appearance is unchanged.
 * ------------------------------------------------------------------------- */
.u-tracking-tight{letter-spacing:-.01em}
.u-shrink-0{flex-shrink:0}
.u-no-underline{text-decoration:none}
.u-grid-2{display:grid;grid-template-columns:1fr 1fr}

/* small input heights used in compact forms */
.u-h-28{height:28px}
.u-h-30{height:30px}
.u-h-32{height:32px}

/* min-widths for aligned date/label columns */
.u-minw-38{min-width:38px}
.u-minw-50{min-width:50px}

/* compact paddings */
.u-py-4{padding:4px 0}
.u-pad-4-8{padding:4px 8px}
.u-pad-4-10{padding:4px 10px}
.u-pad-8-12{padding:8px 12px}
.u-pad-20-8{padding:20px 8px}
.u-pad-40{padding:40px}

/* vertical divider (segmented button separator) */
.u-vdivider{width:1px;height:18px;background:var(--border);margin:0 4px}

/* dialog error box (data-driven-free, static chrome) */
.u-error-box{padding:8px 12px;background:#FEF2F2;color:#DC2626;border-radius:8px;font-size:13px}

/* channel/status chip static chrome; colors come from --chip-bg/--chip-fg */
.u-chip-sm{font-size:10px;padding:0 5px;line-height:16px}

/* article-detail: recurring static spacing/layout utilities */
.u-pad-tab{padding:16px 24px}
.u-pad-32{padding:32px}
.u-row-pad{padding:4px 0}
.u-max-w-680{max-width:680px}
.u-min-w-150{min-width:150px}
.u-min-w-200{min-width:200px}
/* base status dot; color supplied via .stat-dot-dyn + --dot-c */
.u-dot{width:8px;height:8px;border-radius:50%;display:inline-block}

/* ── Placeholder page (dev-only fallback for unbuilt templates) ─────────── */
.placeholder-page{background:var(--bg);color:var(--ink)}
.placeholder-main{max-width:640px;margin:4rem auto;padding:0 24px}
.placeholder-main h1{font-size:1.5rem;font-weight:600;margin-bottom:.5rem}
.placeholder-dump{background:var(--bg-muted);padding:1rem;border-radius:var(--radius-sm);overflow-x:auto;font-size:13px;font-family:var(--font-mono);margin-top:1rem}