/* Jarvis HQ — mobile-first dark theme.
 * Aesthetic pulled from /index.html and /study.html for consistency. */

:root {
  --bg: #0e1015;
  --panel: #161922;
  --panel-2: #1c2030;
  --border: #262a36;
  --text: #d8dae2;
  --muted: #7a8194;
  --accent: #6c8cff;
  --accent-2: #ffaa55;
  --good: #2ecc71;
  --bad: #ff5560;
  --hover: rgba(108,140,255,0.10);
  --hit: 44px;          /* min touch target */
  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 6px 24px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, "SF Pro Text", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}
a { color: var(--accent); text-decoration: none; }
button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  min-height: var(--hit);
}
button:hover { border-color: var(--accent); background: var(--hover); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { filter: brightness(1.08); }
button.ghost { border-color: transparent; }
input, textarea, select {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  width: 100%;
  min-height: var(--hit);
}
input:focus, textarea:focus, select:focus { outline: 0; border-color: var(--accent); }

code { background: var(--panel-2); padding: 2px 5px; border-radius: 3px; font-size: 0.9em; }
pre  { background: var(--panel-2); padding: 12px; border-radius: var(--radius-sm); overflow-x: auto; }
hr   { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }

/* -------------------------------------------------------------
 *  App shell — MOBILE FIRST
 *  Default layout: single column, content fills, bottom tab bar.
 * ------------------------------------------------------------- */

.app {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

header.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  position: sticky; top: 0; z-index: 20;
}
.topbar .title {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.topbar .sub { color: var(--muted); font-size: 11.5px; }
.topbar .spacer { flex: 1; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); display: inline-block;
}
.dot.ok  { background: var(--good); box-shadow: 0 0 8px var(--good); }
.dot.bad { background: var(--bad); }

.avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; cursor: pointer;
}

main.content {
  padding: 14px;
  padding-bottom: 100px;  /* room for bottom tab bar */
  overflow-y: auto;
}

/* Bottom tab bar (mobile) */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--panel);
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  z-index: 30;
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar button {
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 0;
  font-size: 10.5px;
  min-height: 56px;
}
.tabbar button .icon { font-size: 20px; line-height: 1; }
.tabbar button.active { color: var(--accent); }
.tabbar button:hover  { background: var(--hover); }

/* Left rail (desktop only) */
.leftrail { display: none; }
.rightrail { display: none; }

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}
.card h2, .card h3 { margin: 0 0 8px; font-size: 15px; }
.card .summary {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.45;
}
.card .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.card details > summary {
  cursor: pointer;
  list-style: none;
  color: var(--accent);
  font-size: 13px;
  margin-top: 8px;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  user-select: none;
}
.card details > summary::-webkit-details-marker { display: none; }
.card details[open] > summary { color: var(--muted); }

/* Stat grid */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.stat {
  background: var(--panel-2);
  border-radius: var(--radius-sm);
  padding: 10px;
}
.stat .n { font-size: 18px; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; }

/* Tile grid */
.tiles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  min-height: 80px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 4px;
}
.tile:hover { border-color: var(--accent); }
.tile .icon { font-size: 22px; }
.tile .label { font-size: 13px; font-weight: 600; }
.tile .sub { color: var(--muted); font-size: 11.5px; }

/* KB tree */
.tree { font-size: 13.5px; }
.tree .folder { font-weight: 600; margin-top: 6px; }
.tree .file {
  padding: 6px 8px;
  cursor: pointer;
  border-radius: 4px;
  display: flex; justify-content: space-between; gap: 8px;
  min-height: 36px;
  align-items: center;
}
.tree .file:hover { background: var(--hover); }
.tree .file.active { background: var(--hover); color: var(--accent); }
.tree .file .size { color: var(--muted); font-size: 11px; }

/* Chat */
.chat {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.msg {
  padding: 10px 12px;
  border-radius: var(--radius);
  max-width: 92%;
  font-size: 14px;
  line-height: 1.4;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg.user      { background: var(--accent); color: #fff; align-self: flex-end; }
.msg.assistant { background: var(--panel-2); border: 1px solid var(--border); align-self: flex-start; }
.msg.system    { color: var(--muted); font-size: 12px; align-self: center; text-align: center; }
.msg .meta { font-size: 10.5px; color: rgba(255,255,255,0.7); margin-top: 4px; }
.msg.assistant .meta { color: var(--muted); }
.msg .show-original {
  font-size: 11px; color: var(--accent-2); cursor: pointer;
  margin-top: 4px; display: inline-block;
}

.chat-input-row {
  display: flex; gap: 6px;
  padding: 8px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}
.chat-input-row textarea {
  resize: none;
  min-height: var(--hit);
  max-height: 140px;
}
.chip {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 11.5px;
  cursor: pointer;
  color: var(--muted);
  min-height: 28px;
  display: inline-flex; align-items: center;
}
.chip:hover { color: var(--text); border-color: var(--accent); }

/* Floating chat (mobile) */
.chat-sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-radius: 14px 14px 0 0;
  box-shadow: var(--shadow);
  z-index: 40;
  display: flex; flex-direction: column;
  max-height: 80vh;
  transform: translateY(calc(100% - 60px));
  transition: transform 0.25s ease;
}
.chat-sheet.open { transform: translateY(0); }
.chat-sheet .grip {
  height: 56px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; user-select: none;
  font-size: 13px; color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.chat-sheet .grip::before {
  content: ""; display: block; width: 36px; height: 4px;
  background: var(--border); border-radius: 2px; margin-right: 10px;
}

/* "More" sheet for overflow tabs */
.more-sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-radius: 14px 14px 0 0;
  z-index: 50;
  padding: 20px 14px calc(20px + env(safe-area-inset-bottom));
  display: none;
}
.more-sheet.open { display: block; }
.more-sheet .grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
.more-sheet button {
  flex-direction: column; min-height: 72px;
  display: flex; align-items: center; justify-content: center; gap: 4px;
  background: var(--panel-2);
}
.scrim {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  z-index: 45; display: none;
}
.scrim.open { display: block; }

/* Forms (settings) */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 11px; background: var(--panel-2); color: var(--muted);
}
.badge.ok { background: rgba(46,204,113,0.15); color: var(--good); }
.badge.bad { background: rgba(255,85,96,0.15); color: var(--bad); }

/* -------------------------------------------------------------
 *  Ideas / Prompts — card grids
 * ------------------------------------------------------------- */
.ideas-header { margin-bottom: 14px; }
.ideas-filters {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}
.ideas-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.idea-card { display: flex; flex-direction: column; }
.idea-card h3 { font-size: 15px; line-height: 1.3; }
.idea-card .row button { min-height: 36px; padding: 6px 10px; font-size: 12.5px; }

@media (min-width: 768px) {
  .ideas-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1100px) {
  .ideas-grid { grid-template-columns: 1fr 1fr 1fr; }
}

/* -------------------------------------------------------------
 *  Modal — bottom-sheet on mobile, centered on tablet+
 * ------------------------------------------------------------- */
.hq-modal-scrim {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}
.hq-modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px 14px 0 0;
  width: 100%;
  max-width: 640px;
  max-height: 92vh;
  overflow: auto;
  padding: 18px;
  box-shadow: var(--shadow);
  animation: hq-sheet-up 0.22s ease;
}
@keyframes hq-sheet-up {
  from { transform: translateY(20%); opacity: 0.4; }
  to   { transform: translateY(0); opacity: 1; }
}
@media (min-width: 768px) {
  .hq-modal-scrim { align-items: center; padding: 20px; }
  .hq-modal { border-radius: 14px; max-height: 86vh; }
}

/* Save-as-prompt chip (chat tab) */
.save-prompt-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--text);
  cursor: pointer;
  margin: 6px 12px;
  align-self: flex-start;
}
.save-prompt-chip:hover { border-color: var(--accent); }
.save-prompt-chip .x {
  color: var(--muted); padding: 0 4px; cursor: pointer;
}

/* Tab-stub coming-soon panel */
.stub {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.stub .ico { font-size: 56px; }
.stub h2 { color: var(--text); margin: 8px 0 4px; }

/* -------------------------------------------------------------
 *  Tablet / Desktop — >= 768px
 * ------------------------------------------------------------- */

@media (min-width: 768px) {
  .tiles { grid-template-columns: repeat(3, 1fr); }
  .stats { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .app {
    grid-template-columns: 220px 1fr 360px;
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "top top top"
      "left main right";
  }
  header.topbar { grid-area: top; }
  main.content {
    grid-area: main;
    padding: 20px;
    padding-bottom: 20px;
  }
  .tabbar { display: none; }
  .leftrail {
    grid-area: left;
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 12px 8px;
  }
  .leftrail button {
    width: 100%;
    justify-content: flex-start;
    border: 0;
    background: transparent;
    color: var(--muted);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 2px;
    text-align: left;
    display: flex; align-items: center; gap: 10px;
    font-size: 13.5px;
    min-height: 40px;
  }
  .leftrail button:hover  { background: var(--hover); color: var(--text); }
  .leftrail button.active { background: var(--hover); color: var(--accent); }
  .leftrail .group-title {
    font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--muted); padding: 12px 12px 4px;
  }

  .rightrail {
    grid-area: right;
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border-left: 1px solid var(--border);
    overflow: hidden;
  }
  .chat-sheet { display: none !important; }
  .more-sheet { display: none !important; }
  .scrim { display: none !important; }

  .stats { grid-template-columns: repeat(4, 1fr); }
  .tiles { grid-template-columns: repeat(4, 1fr); }
}

/* Wider screens get a bit more breathing room */
@media (min-width: 1400px) {
  .app { grid-template-columns: 240px 1fr 400px; }
  main.content { padding: 28px; }
}

/* -------------------------------------------------------------
 *  Search tab — Phase 2 (Algolia InstantSearch)
 *  Mobile-first.
 * ------------------------------------------------------------- */
.search-shell { padding: 12px; }
.search-top { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.search-tabs {
  display: flex; gap: 6px; align-items: center; overflow-x: auto;
  border-bottom: 1px solid var(--border); padding-bottom: 4px;
}
.search-tab {
  background: transparent; border: 0; color: var(--muted);
  padding: 8px 10px; min-height: var(--hit);
  font-size: 13px; border-bottom: 2px solid transparent;
  white-space: nowrap; cursor: pointer;
}
.search-tab.active { color: var(--text); border-bottom-color: var(--accent); }
.search-tab .cnt { color: var(--muted); font-size: 11px; margin-left: 4px; }
.search-tab.filters-toggle { margin-left: auto; }

.search-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.search-filters {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  font-size: 13px;
  display: none;       /* mobile: hidden by default; toggle via .filters-open */
}
.search-shell.filters-open .search-filters:not([hidden]) { display: block; }

.search-filters .filt-group { margin-bottom: 12px; }
.search-filters h4 {
  margin: 0 0 6px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted);
}

/* InstantSearch widgets — dark theme overrides */
.ais-SearchBox-form { display: flex; gap: 6px; }
.ais-SearchBox-input {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 14px; width: 100%; min-height: var(--hit);
  font-size: 15px;
}
.ais-SearchBox-input:focus { outline: 0; border-color: var(--accent); }
.ais-SearchBox-submit, .ais-SearchBox-reset { display: none; }
.ais-SearchBox-reset { display: inline-flex; background: transparent; border: 0; color: var(--muted); }

.ais-RefinementList-list { list-style: none; padding: 0; margin: 0; }
.ais-RefinementList-item { padding: 4px 0; min-height: 32px; }
.ais-RefinementList-label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.ais-RefinementList-checkbox { accent-color: var(--accent); }
.ais-RefinementList-labelText { font-size: 13px; }
.ais-RefinementList-count {
  background: var(--panel); color: var(--muted);
  font-size: 11px; padding: 1px 6px; border-radius: 10px;
  margin-left: auto;
}
.ais-RefinementList-showMore {
  background: transparent; border: 0; color: var(--accent);
  padding: 4px 0; font-size: 12px; cursor: pointer;
}

.ais-Pagination-list {
  list-style: none; padding: 12px 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 4px; justify-content: center;
}
.ais-Pagination-item a, .ais-Pagination-item span {
  display: inline-block; padding: 8px 12px;
  min-width: var(--hit); text-align: center;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); text-decoration: none;
  background: var(--panel-2); font-size: 13px;
}
.ais-Pagination-item--selected a {
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.ais-Pagination-item--disabled a, .ais-Pagination-item--disabled span {
  opacity: 0.4; pointer-events: none;
}

/* Hit cards */
.ais-Hits-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.hit {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px;
}
.hit-head { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.hit-icon { font-size: 16px; }
.hit-title { font-size: 14px; line-height: 1.3; word-break: break-word; }
.hit-meta { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; }
.hit-meta .badge {
  background: var(--panel); border: 1px solid var(--border);
  padding: 2px 8px; border-radius: 10px; font-size: 11px; color: var(--muted);
}
.hit-meta .badge.tc { color: var(--accent-2); border-color: var(--accent-2); }
.hit-meta .badge.src { text-transform: uppercase; letter-spacing: 0.04em; }
.hit-snippet {
  font-size: 13.5px; line-height: 1.5; color: var(--text);
  margin: 6px 0 10px; word-break: break-word;
}
.hit-snippet em {
  background: rgba(255, 170, 85, 0.18); color: var(--accent-2);
  padding: 0 2px; border-radius: 2px; font-style: normal;
}
.hit-actions {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.hit-actions .btn {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--text); padding: 6px 10px;
  border-radius: var(--radius-sm); font-size: 12.5px;
  min-height: 36px; cursor: pointer;
}
.hit-actions .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.hit-actions .btn:hover { border-color: var(--accent); }

.hit-path { font-size: 12px; color: var(--muted); margin: 4px 0 6px; word-break: break-all; }
.hit-path a { color: var(--accent); }
.badge.kind {
  background: var(--panel); border: 1px solid var(--border);
  padding: 2px 8px; border-radius: 4px; font-size: 11px; text-transform: uppercase;
}
.badge.kind-brain        { color: #ffaa55; border-color: #ffaa55; }
.badge.kind-methodology  { color: #6c8cff; border-color: #6c8cff; }
.badge.kind-memory       { color: #2ecc71; border-color: #2ecc71; }
.badge.kind-episode      { color: #d29bff; border-color: #d29bff; }
.badge.kind-folder       { color: var(--muted); }

.search-empty {
  margin-top: 18px; padding: 14px;
  background: var(--panel-2); border: 1px dashed var(--border);
  border-radius: var(--radius); text-align: center;
}
.search-empty .suggest {
  display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 8px;
}
.search-empty .suggest button {
  background: var(--panel); border: 1px solid var(--accent); color: var(--accent);
  padding: 6px 12px; border-radius: 16px; font-size: 13px; cursor: pointer;
}
.search-empty .suggest button:hover { background: var(--accent); color: #fff; }

/* Desktop: two-column layout for filters + results */
@media (min-width: 900px) {
  .search-body { grid-template-columns: 240px 1fr; }
  .search-filters { display: block; }
  .search-tab.filters-toggle { display: none; }
}

/* ───── Login overlay ──────────────────────────────────────────── */
[x-cloak] { display: none !important; }
.login-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: radial-gradient(1200px 600px at 20% 0%, #1a2030, #0b0d12 75%);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-card {
  width: 100%; max-width: 380px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px 26px 22px;
  display: flex; flex-direction: column; gap: 12px;
  box-shadow: var(--shadow);
}
.login-card h1 { margin: 0; font-size: 22px; letter-spacing: 0.04em; }
.login-card .sub { margin: -4px 0 8px; color: var(--muted); font-size: 13px; }
.login-card label {
  display: flex; flex-direction: column; font-size: 12px;
  color: var(--muted); gap: 4px;
}
.login-card input {
  font: inherit; padding: 11px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text); min-height: 44px;
}
.login-card input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.login-card button {
  margin-top: 6px; padding: 12px 14px; border: 0; border-radius: 8px;
  background: var(--accent); color: white; font-weight: 600; cursor: pointer;
  min-height: 44px; font-size: 14px;
}
.login-card button[disabled] { opacity: 0.6; cursor: progress; }
.login-card .err { color: #f88; font-size: 12px; margin: 4px 0 0; min-height: 1em; }

/* ───── KB document viewer with TOC sidebar ─────────────────────── */
.kb-doc { display: grid; grid-template-columns: 1fr; gap: 16px; }
.kb-article { min-width: 0; }
.kb-render { font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.kb-render h1, .kb-render h2 { margin-top: 1.4em; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
.kb-render h3 { margin-top: 1.2em; color: var(--accent); }
.kb-render code { background: var(--bg); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
.kb-render pre { background: var(--bg); padding: 10px; border-radius: 6px; overflow-x: auto; font-size: 12.5px; }
.kb-render blockquote { border-left: 3px solid var(--accent); padding-left: 10px; color: var(--muted); }
.kb-render table { border-collapse: collapse; width: 100%; font-size: 13px; }
.kb-render table th, .kb-render table td { border-bottom: 1px solid var(--border); padding: 6px 8px; text-align: left; vertical-align: top; }
.kb-render hr { border: 0; border-top: 1px solid var(--border); margin: 16px 0; }

.kb-toc {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 8px;
  max-height: 70vh;
  overflow-y: auto;
  position: sticky;
  top: 64px;
  font-size: 12.5px;
}
.kb-toc.collapsed nav { display: none; }
.kb-toc-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 4px 6px; border-bottom: 1px solid var(--border); margin-bottom: 6px;
}
.kb-toc nav { display: flex; flex-direction: column; gap: 2px; }
.kb-toc-item {
  display: block; padding: 6px 8px; border-radius: 4px;
  color: var(--text); text-decoration: none; line-height: 1.35;
  min-height: 32px;
}
.kb-toc-item:hover { background: var(--bg); color: var(--accent); }
.kb-toc-item.lvl-1 { font-weight: 600; }
.kb-toc-item.lvl-2 { padding-left: 16px; }
.kb-toc-item.lvl-3 { padding-left: 26px; color: var(--muted); }

@media (min-width: 1000px) {
  .kb-doc { grid-template-columns: 220px 1fr; }
  .kb-toc-mobile { display: none !important; }
}
@media (max-width: 999px) {
  .kb-toc {
    position: fixed; right: -100%; top: 60px; bottom: 0;
    width: min(86vw, 320px); z-index: 80;
    transition: right 0.2s ease-out; box-shadow: var(--shadow);
    max-height: none; border-radius: 8px 0 0 8px;
  }
  .kb-toc.open { right: 0; }
  .kb-toc-mobile { display: inline-flex !important; }
}