/* DocWizard: the only stylesheet (ARCHITECTURE.md §25). */
@layer tokens, base, layout, components;

@layer tokens {
  :root {
    color-scheme: dark;
    --bg:        light-dark(#ffffff, #000000);
    --fg:        light-dark(#141414, #e6e6e6);
    --muted:     light-dark(#616161, #8c8c8c);
    --line:      light-dark(#e3e3e3, #262626);
    --edge:      light-dark(#8a8a8a, #6b6b6b);
    --hover:     light-dark(#f2f2f2, #141414);
    --accent:    light-dark(#0b57d0, #4da3ff);
    --on-accent: light-dark(#ffffff, #000000);
    --danger:    light-dark(#c5221f, #ff6b6b);
    --ok:        light-dark(#1e7e34, #5fd38d);
    --sel:       light-dark(rgb(11 87 208 / .2), rgb(77 163 255 / .35));
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
    --mono: ui-monospace, "SF Mono", "Cascadia Mono", "DejaVu Sans Mono", monospace;
    --radius: 2px;
    --control: 28px;
    --peer-0: light-dark(#e03131, #ff6b6b);
    --peer-1: light-dark(#d9480f, #ffa94d);
    --peer-2: light-dark(#b35c00, #ffd43b);
    --peer-3: light-dark(#2f9e44, #69db7c);
    --peer-4: light-dark(#0c8599, #38d9a9);
    --peer-5: light-dark(#1971c2, #4dabf7);
    --peer-6: light-dark(#7048e8, #9775fa);
    --peer-7: light-dark(#c2255c, #f783ac);
  }
  :root[data-theme="light"]  { color-scheme: light; }
  :root[data-theme="system"] { color-scheme: light dark; }
  @media (prefers-contrast: more) {
    :root { --muted: var(--fg); --line: var(--edge); }
  }
  @media (pointer: coarse) {
    :root { --control: 40px; }
  }
}

@layer base {
  *, *::before, *::after { box-sizing: border-box; }
  html { background: var(--bg); color: var(--fg); font: 14px/1.4 var(--font); }
  body { margin: 0; min-height: 100dvh; background: var(--bg); }
  h1, h2 { font-size: 14px; font-weight: 600; margin: 24px 0 8px; }
  p { margin: 8px 0; }
  a { color: var(--accent); text-decoration: none; }
  a:hover, a:focus-visible { text-decoration: underline; }
  :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  ::selection { background: var(--sel); }
  button, input, select, textarea {
    font: inherit; color: var(--fg); background: transparent;
    border: 1px solid var(--edge); border-radius: var(--radius);
    min-height: var(--control);
  }
  button { padding: 0 12px; cursor: pointer; white-space: nowrap; }
  button:hover { background: var(--hover); }
  button.primary { background: var(--accent); color: var(--on-accent); border-color: transparent; }
  button.danger { color: var(--danger); border-color: var(--danger); }
  button.link { border: 0; padding: 0; min-height: 0; color: var(--accent); background: none; }
  a.button {
    display: inline-flex; align-items: center; justify-content: center; min-height: var(--control);
    padding: 0 12px; border: 1px solid var(--edge); border-radius: var(--radius); color: var(--fg);
    text-decoration: none; white-space: nowrap;
  }
  a.button:hover { background: var(--hover); }
  input, select, textarea { padding: 0 8px; }
  textarea { padding: 8px; }
  input::placeholder { color: var(--muted); }
  input[type="checkbox"], input[type="radio"] { accent-color: var(--accent); min-height: 0; }
  input[type="file"] { border: 0; padding: 0; }
  table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
  th { text-align: left; font-weight: 400; color: var(--muted); }
  th, td { padding: 4px 16px; border-bottom: 1px solid var(--line); height: var(--control); }
  tbody tr:hover { background: var(--hover); }
  tr[data-href] { cursor: pointer; }
  .num { text-align: right; }
  dialog {
    background: var(--bg); color: var(--fg); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 16px; width: min(32rem, calc(100vw - 32px));
  }
  dialog::backdrop { background: rgb(0 0 0 / .6); }
  dialog h2 { margin-top: 0; }
  fieldset { border: 0; padding: 0; margin: 0; display: flex; gap: 16px; flex-wrap: wrap; }
  legend { color: var(--muted); padding: 0; margin-bottom: 4px; }
}

@layer layout {
  .page { display: grid; grid-template-rows: 40px 1fr auto; min-height: 100dvh; }
  .toolbar {
    display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 40px;
    border-bottom: 1px solid var(--line); min-width: 0;
  }
  .crumbs { display: flex; gap: 8px; align-items: center; min-width: 0; overflow: hidden; white-space: nowrap; }
  .crumbs > * { overflow: hidden; text-overflow: ellipsis; }
  .crumbs a { color: var(--fg); }
  .crumbs span:last-child { font-weight: 600; }
  .wordmark { font-weight: 600; }
  .actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
  .actions form.inline { display: contents; }
  .content { padding-bottom: 32px; }
  .pad { padding: 0 16px; }
  .narrow { max-width: 40rem; padding: 0 16px; margin: 24px auto; }
  .qr-box { width: 220px; max-width: 100%; }
  .qr-box svg { display: block; width: 100%; height: auto; border-radius: 4px; }
  .recovery-codes { display: grid; grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); gap: 4px 16px; }
  .statusbar {
    display: flex; gap: 16px; align-items: center; padding: 0 16px; min-height: 24px;
    border-top: 1px solid var(--line); color: var(--muted); font-size: 12px;
  }
  .statusbar .spacer, .pane-head .spacer { flex: 1; }
  .panels { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 0 32px; padding: 0 16px; }

  .editor-page { height: 100dvh; grid-template-rows: 40px minmax(0, 1fr) 24px; }
  .workspace { min-height: 0; }
  .split { display: grid; grid-template-columns: 1fr 1fr; height: 100%; min-height: 0; }
  .split.no-preview { grid-template-columns: 1fr; }
  .split.no-preview .preview-pane { display: none; }
  .split.with-panel { grid-template-columns: 1fr 1fr 20rem; }
  .split.no-preview.with-panel { grid-template-columns: 1fr 20rem; }
  .side-panel { border-left: 1px solid var(--line); background: var(--bg); }
  .side-panel[hidden] { display: none; }
  .panel-body { overflow: auto; padding: 8px 16px 32px; flex: 1; }
  .pane { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
  .editor-pane { overflow: hidden; }
  .preview-pane { border-left: 1px solid var(--line); }
  .pane-head {
    display: flex; gap: 12px; align-items: center; padding: 0 16px; height: 32px;
    border-bottom: 1px solid var(--line); color: var(--muted); white-space: nowrap; overflow: hidden;
  }
  .pane-head button { min-height: 24px; }
  #preview, .pdf-frame { flex: 1; width: 100%; border: 0; background: #fff; }
  #preview[hidden], .pdf-frame[hidden] { display: none; }
  .preview-pane.dark-paper #preview { background: #000; }
  .preview-empty { flex: 1; padding: 16px; color: var(--muted); }
  #editor { height: 100%; }
  .diagnostic-error { color: var(--danger); }

  @media (max-width: 900px) {
    .split { grid-template-columns: 1fr; }
    .split.show-preview .editor-pane { display: none; }
    .split:not(.show-preview) .preview-pane { display: none; }
    .preview-pane { border-left: 0; }
    .split.with-panel, .split.no-preview.with-panel { grid-template-columns: 1fr; position: relative; }
    .side-panel { position: absolute; inset: 0; border-left: 0; z-index: 2; }
    .actions .status, .presence .name { display: none; }
  }
}

@layer components {
  /* Search */
  .toolbar-search { width: min(16rem, 40vw); }
  .narrow.wide { max-width: 52rem; }
  .search-results li { display: block; padding: 8px 0; border-bottom: 1px solid var(--line); }
  .search-results .snippet { margin: 4px 0 0; color: var(--muted); }
  .search-results mark { background: var(--sel); color: var(--fg); border-radius: 2px; }

  /* Admin area */
  .admin { max-width: 72rem; margin: 0 auto; padding: 0 16px 32px; }
  .tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 16px 0; overflow-x: auto; }
  .tabs a { padding: 8px 12px; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; }
  .tabs a:hover { color: var(--fg); }
  .tabs a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
  .facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: 8px 24px; margin: 0; }
  .facts dt { color: var(--muted); }
  .facts dd { margin: 0; }
  .grid { margin: 8px 0 16px; }
  .grid td { vertical-align: top; padding-top: 8px; padding-bottom: 8px; }
  .table-wrap { overflow-x: auto; }
  .badge { display: inline-block; padding: 0 6px; border: 1px solid var(--edge); border-radius: 999px; font-size: .85em; color: var(--muted); }
  .ok { color: var(--ok); }
  .callout { border: 1px solid var(--edge); border-radius: var(--radius); padding: 12px; margin: 8px 0 16px; }
  .searchbar { margin: 8px 0; max-width: 40rem; }
  .searchbar input { flex: 1; }
  .narrow-form { max-width: 40rem; }
  details.menu { position: relative; }
  details.menu summary { cursor: pointer; color: var(--accent); }
  details.menu[open] .menu-body { position: absolute; right: 0; z-index: 5; width: min(22rem, 90vw); background: var(--bg);
    border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; display: grid; gap: 12px; }
  .actions-list { display: grid; gap: 4px; }
  .actions-list button { justify-content: flex-start; text-align: left; }
  @media (max-width: 640px) { .admin .grid { display: block; overflow-x: auto; } }

  .form { display: flex; flex-direction: column; gap: 12px; max-width: 40rem; }
  .form label { display: flex; flex-direction: column; gap: 4px; }
  .form label.choice, label.choice { flex-direction: row; align-items: center; gap: 8px; display: inline-flex; }
  label.choice[hidden], label[hidden] { display: none; }
  .buttons { display: flex; gap: 8px; justify-content: flex-end; }
  .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
  .row input:not([type]), .row input[name] { flex: 1; min-width: 8rem; }
  .muted { color: var(--muted); }
  .visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  form.inline { display: inline; }
  .error { color: var(--danger); }
  .status { color: var(--muted); }
  ul.plain { list-style: none; padding: 0; margin: 8px 0; }
  ul.plain li { padding: 4px 0; border-bottom: 1px solid var(--line); display: flex; gap: 8px; align-items: center; }
  ul.plain li .spacer { flex: 1; }
  .presence { display: flex; gap: 8px; align-items: center; color: var(--muted); white-space: nowrap; overflow: hidden; }
  .peer { display: inline-flex; gap: 4px; align-items: center; }
  .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--peer); flex: none; }
  .toast {
    position: fixed; left: 16px; bottom: 32px; max-width: calc(100vw - 32px);
    background: var(--bg); border: 1px solid var(--line); padding: 4px 12px;
  }
  .toast.error { color: var(--danger); }
  .thread { border-bottom: 1px solid var(--line); padding: 8px 0; display: flex; flex-direction: column; gap: 4px; }
  .thread.active blockquote { border-left-color: var(--accent); }
  .thread.resolved { color: var(--muted); }
  .thread blockquote { margin: 0; padding-left: 8px; border-left: 2px solid var(--line); color: var(--muted); cursor: pointer; white-space: pre-wrap; overflow-wrap: anywhere; }
  .thread .meta { margin: 4px 0 0; }
  .thread .body { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
  .thread .row { margin: 0; }
  .thread textarea { width: 100%; resize: vertical; }
  .reply { display: flex; gap: 8px; align-items: flex-start; }
  .reply textarea { flex: 1; }
  dialog.wide { width: min(56rem, calc(100vw - 32px)); }
  .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .conflicts li { flex-direction: column; align-items: stretch; padding: 8px 0; }
  .conflicts li.active { border-left: 2px solid var(--danger); padding-left: 8px; }
  .danger-text { color: var(--danger) !important; }
  @media (max-width: 900px) { .compare { grid-template-columns: 1fr; } }
  pre.alt { white-space: pre-wrap; font: 13px/1.5 var(--mono); border: 1px solid var(--line); padding: 8px; margin: 4px 0; }
}

/* Unlayered and scoped to #editor so they win over CodeMirror's injected base theme. */
  #editor .cm-editor { height: 100%; background: var(--bg); color: var(--fg); }
  #editor .cm-editor.cm-focused { outline: none; }
  #editor .cm-scroller { font-family: var(--editor-font, var(--font)); font-size: var(--editor-size, 17px); line-height: 1.6; }
  #editor .cm-content { max-width: 72ch; margin: 0 auto; padding: 24px 16px 40vh; caret-color: var(--accent); }
  #editor .cm-cursor, #editor .cm-dropCursor { border-left: 2px solid var(--accent); }
  #editor .cm-selectionBackground, #editor .cm-focused .cm-selectionBackground, #editor .cm-content ::selection { background: var(--sel) !important; }
  #editor .cm-searchMatch { background: var(--sel); }
  #editor .cm-searchMatch-selected { outline: 1px solid var(--accent); }
  #editor .cm-gutters { background: var(--bg); border: 0; color: var(--muted); }
  #editor .cm-panels { background: var(--bg); color: var(--fg); }
  #editor .cm-panels.cm-panels-bottom { border-top: 1px solid var(--line); }
  #editor .cm-panel input, #editor .cm-panel button { min-height: 24px; }
  #editor .cm-tooltip { background: var(--bg); border: 1px solid var(--line); color: var(--fg); }
  #editor .cm-tooltip-autocomplete > ul > li { padding: 2px 8px; }
  #editor .cm-tooltip-autocomplete > ul > li[aria-selected] { background: var(--hover); color: var(--fg); }
  #editor .cm-completionDetail { color: var(--muted); margin-left: 8px; font-style: normal; }
  #editor .cm-completionInfo { max-width: 24rem; }

  #editor .cm-h1 { font-size: 1.5em; font-weight: 600; }
  #editor .cm-h2 { font-size: 1.3em; font-weight: 600; }
  #editor .cm-h3 { font-size: 1.15em; font-weight: 600; }
  #editor .cm-h4, #editor .cm-h5, #editor .cm-h6 { font-weight: 600; }
  #editor .cm-md-mark { color: var(--muted); }
  #editor .cm-md-em { font-style: italic; }
  #editor .cm-md-strong { font-weight: 600; }
  #editor .cm-md-strike { text-decoration: line-through; }
  #editor .cm-md-link { color: var(--accent); }
  #editor .cm-md-url { color: var(--muted); }
  #editor .cm-md-code, #editor .cm-md-frontmatter, #editor .cm-md-raw { font-family: var(--mono); font-size: 0.9em; }
  #editor .cm-md-meta { color: var(--muted); }
  #editor .cm-md-quote { color: var(--muted); }
  #editor .cm-md-math { font-family: var(--mono); font-size: 0.9em; }
  #editor .cm-cite-chip {
    border: 1px solid var(--edge); border-radius: var(--radius); padding: 0 4px;
    font-size: 0.9em; white-space: nowrap; cursor: text;
  }
  #editor .cm-cite-unknown { text-decoration: wavy underline var(--danger); }
  #editor .cm-math-widget math { font-size: 1.05em; }
  #editor .cm-math-block { display: block; text-align: center; }
  #editor .cm-task { margin: 0 4px 0 0; vertical-align: middle; }
  #editor .cm-latex-cmd { color: var(--accent); }
  #editor .cm-comment { color: var(--muted); }
  #editor .cm-remote-cursor { position: relative; border-left: 2px solid var(--peer); margin-left: -1px; margin-right: -1px; }
  #editor .cm-remote-sel { border-bottom: 2px solid var(--peer); }
  #editor .cm-comment-mark { text-decoration: underline 2px dotted var(--accent); text-underline-offset: 3px; cursor: pointer; }
  #editor .cm-comment-active { background: var(--sel); }
  #editor .cm-conflict-gutter { width: 4px; }
  #editor .cm-conflict-gutter .cm-gutterElement { padding: 0; }
  #editor .cm-conflict-bar { display: block; width: 2px; height: 100%; background: var(--danger); cursor: pointer; }