/* ------------------------------------------------------------------
   TDD Board
   Palette: grey paper, warm ink, red pencil for anything unresolved.
   The pencil colour is never decorative: if it is red, someone is
   waiting on you.
   ------------------------------------------------------------------ */

:root {
  --paper: #eeece6;
  --surface: #fbfaf7;
  --surface-sunk: #e6e3da;
  --ink: #26221b;
  --ink-soft: #6d665a;
  --ink-faint: #979082;
  --rule: #d6d1c4;
  --rule-strong: #bdb6a5;
  --pencil: #ab3418;
  --pencil-wash: #f5e3de;
  --approve: #2c6a4c;
  --approve-wash: #dfeae2;
  --review: #8a6410;
  --review-wash: #f1e7cf;
  --add-wash: #e0ebdf;
  --del-wash: #f5e2de;

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    sans-serif;
  --serif: "Iowan Old Style", Charter, "Bitstream Charter", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --code-size: 12.5px;
  --code-leading: 1.55;
  --shell: 1440px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #171614;
  --surface: #1e1d1a;
  --surface-sunk: #121110;
  --ink: #e9e4d9;
  --ink-soft: #9b9488;
  --ink-faint: #706a60;
  --rule: #332f2a;
  --rule-strong: #4a453d;
  --pencil: #e0785e;
  --pencil-wash: #37211b;
  --approve: #74bf96;
  --approve-wash: #1b2a22;
  --review: #d3a24d;
  --review-wash: #2d2418;
  --add-wash: #17281e;
  --del-wash: #2e1c18;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--pencil);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------------------------------------------------------------- *
   Masthead
   ---------------------------------------------------------------- */
.masthead {
  border-bottom: 1px solid var(--rule-strong);
  background: var(--surface);
}

.masthead__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: -0.01em;
}

.masthead__spacer {
  flex: 1;
}

.masthead__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}

.whoami {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px 10px 3px 4px;
  cursor: pointer;
  font-size: 13px;
}

.whoami:hover {
  border-color: var(--rule-strong);
}

.avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10px;
  background: var(--surface-sunk);
  color: var(--ink-soft);
  flex: none;
}

.icon-button {
  border: 1px solid var(--rule);
  background: none;
  border-radius: 4px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--ink-soft);
}

.icon-button:hover {
  border-color: var(--rule-strong);
  color: var(--ink);
}

/* ---------------------------------------------------------------- *
   Shell
   ---------------------------------------------------------------- */
.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px 24px 64px;
}

.page-head {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.page-head h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: -0.015em;
  margin: 0;
}

.page-head p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  max-width: 58ch;
}

/* ---------------------------------------------------------------- *
   Buttons
   ---------------------------------------------------------------- */
.btn {
  border: 1px solid var(--rule-strong);
  background: var(--surface);
  border-radius: 4px;
  padding: 7px 14px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.btn:hover {
  background: var(--surface-sunk);
}

.btn--primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.btn--primary:hover {
  background: var(--ink);
  opacity: 0.88;
}

.btn--quiet {
  border-color: transparent;
  background: none;
  color: var(--ink-soft);
  padding: 5px 8px;
}

.btn--quiet:hover {
  background: var(--surface-sunk);
  color: var(--ink);
}

.btn--danger {
  color: var(--pencil);
  border-color: transparent;
  background: none;
  padding: 5px 8px;
}

.btn--danger:hover {
  background: var(--pencil-wash);
}

.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ---------------------------------------------------------------- *
   Filter bar
   ---------------------------------------------------------------- */
.filters {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2px;
}

.search {
  flex: 1;
  min-width: 220px;
  position: relative;
}

.search input {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface);
  padding: 8px 12px 8px 32px;
}

.search svg {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
  pointer-events: none;
}

.chip-row {
  display: flex;
  gap: 4px;
  background: var(--surface-sunk);
  border-radius: 5px;
  padding: 3px;
}

.chip {
  border: none;
  background: none;
  border-radius: 3px;
  padding: 4px 10px;
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
}

.chip[aria-pressed="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

/* ---------------------------------------------------------------- *
   Document list
   ---------------------------------------------------------------- */
.doc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.doc {
  display: grid;
  grid-template-columns: 3px 1fr auto;
  gap: 0 18px;
  align-items: center;
  border-bottom: 1px solid var(--rule);
  background: none;
  text-decoration: none;
  color: inherit;
  padding: 0;
}

.doc:hover {
  background: var(--surface);
}

.doc__tick {
  align-self: stretch;
  background: var(--ink-faint);
}

.doc[data-status="in_review"] .doc__tick {
  background: var(--review);
}

.doc[data-status="approved"] .doc__tick {
  background: var(--approve);
}

.doc[data-status="archived"] .doc__tick {
  background: var(--rule-strong);
}

.doc__body {
  padding: 14px 0;
  min-width: 0;
}

.doc__title {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 0 0 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.doc__desc {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13.5px;
  max-width: 72ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc__meta {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 12.5px;
  color: var(--ink-faint);
  margin-top: 6px;
  flex-wrap: wrap;
}

.doc__side {
  padding: 14px 16px 14px 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 1px 5px;
}

.vtag {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-soft);
}

.status-pill {
  font-size: 11.5px;
  border-radius: 2px;
  padding: 2px 7px;
  border: 1px solid;
  white-space: nowrap;
}

.status-pill[data-status="draft"] {
  color: var(--ink-soft);
  border-color: var(--rule-strong);
}

.status-pill[data-status="in_review"] {
  color: var(--review);
  border-color: var(--review);
  background: var(--review-wash);
}

.status-pill[data-status="approved"] {
  color: var(--approve);
  border-color: var(--approve);
  background: var(--approve-wash);
}

.status-pill[data-status="archived"] {
  color: var(--ink-faint);
  border-color: var(--rule);
}

.open-count {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--pencil);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}

.open-count[data-zero="true"] {
  color: var(--ink-faint);
}

/* ---------------------------------------------------------------- *
   Empty + loading states
   ---------------------------------------------------------------- */
.empty {
  border: 1px dashed var(--rule-strong);
  border-radius: 6px;
  padding: 48px 32px;
  text-align: center;
  color: var(--ink-soft);
  background: var(--surface);
}

.empty h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 20px;
  color: var(--ink);
  margin: 0 0 6px;
}

.empty p {
  margin: 0 auto 18px;
  max-width: 44ch;
  font-size: 14px;
}

.loading {
  color: var(--ink-faint);
  font-size: 14px;
  padding: 32px 0;
}

.error-banner {
  border: 1px solid var(--pencil);
  background: var(--pencil-wash);
  color: var(--pencil);
  border-radius: 4px;
  padding: 10px 14px;
  font-size: 13.5px;
  margin-bottom: 16px;
}

/* ---------------------------------------------------------------- *
   Detail header
   ---------------------------------------------------------------- */
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  margin-bottom: 14px;
}

.back:hover {
  color: var(--ink);
}

.doc-head {
  display: flex;
  gap: 4px 24px;
  align-items: flex-start;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.doc-head__main {
  flex: 1;
  min-width: 280px;
}

.doc-head h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 4px;
}

.doc-head p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14.5px;
  max-width: 68ch;
}

.doc-head__facts {
  flex-basis: 100%;
  display: flex;
  gap: 6px 14px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--ink-faint);
  align-items: center;
}

/* Reviewers sit on the facts line, set off by a hairline. */
.doc-head__facts .reviewers {
  margin-top: 0;
  padding-left: 14px;
  border-left: 1px solid var(--rule);
}

.doc-head__actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

select.status-select {
  border: 1px solid var(--rule-strong);
  background: var(--surface);
  border-radius: 4px;
  padding: 7px 10px;
  font-size: 13.5px;
}

/* ---------------------------------------------------------------- *
   Version rail
   ---------------------------------------------------------------- */
/* Lives in the pane bar beside the tabs. */
.rail {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-left: 10px;
  border-left: 1px solid var(--rule);
  overflow-x: auto;
  max-width: 50%;
}

.vchip {
  flex: none;
  border: 1px solid var(--rule);
  background: var(--surface);
  border-radius: 4px;
  padding: 3px 8px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.vchip:hover {
  border-color: var(--rule-strong);
}

.vchip[aria-pressed="true"] {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--surface);
  box-shadow: inset 0 -2px 0 var(--ink);
}

.vchip__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pencil);
}

.vchip__check {
  color: var(--approve);
  font-size: 11px;
}

.stale-flag {
  color: var(--review);
  border: 1px solid var(--review);
  background: var(--review-wash);
  border-radius: 2px;
  padding: 1px 5px;
  font-size: 11px;
}

/* ---------------------------------------------------------------- *
   Approval banner
   ---------------------------------------------------------------- */
/* A plain sign-off is a pill in the pane bar... */
.approval-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  white-space: nowrap;
  color: var(--approve);
  background: var(--approve-wash);
  border: 1px solid var(--approve);
  border-radius: 999px;
  padding: 2px 9px;
}

/* ...only the stale-approval warning gets a full-width banner. */
.approval-note {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
  font-size: 13px;
  padding: 8px 12px;
  margin-top: 10px;
  border-radius: 4px;
  border: 1px solid var(--approve);
  background: var(--approve-wash);
  color: var(--approve);
}

.approval-note[data-tone="warn"] {
  border-color: var(--review);
  background: var(--review-wash);
  color: var(--review);
}

.approval-note .line-ref {
  color: inherit;
}

/* ---------------------------------------------------------------- *
   Work area
   ---------------------------------------------------------------- */
.work {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 0;
  align-items: start;
}

.pane {
  min-width: 0;
  border-right: 1px solid var(--rule);
}

.pane__bar {
  display: flex;
  align-items: center;
  gap: 8px 10px;
  padding: 10px 16px 10px 0;
  flex-wrap: wrap;
}

.pane__spacer {
  flex: 1;
}

.doc-head__file {
  font-family: var(--mono);
  font-size: 12px;
}

.viewer {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 5px;
  overflow: hidden;
  margin-right: 20px;
}

/* ---------------------------------------------------------------- *
   Code
   ---------------------------------------------------------------- */
.code {
  font-family: var(--mono);
  font-size: var(--code-size);
  line-height: var(--code-leading);
  overflow-x: auto;
  max-height: 72vh;
  overflow-y: auto;
}

.code table {
  border-collapse: collapse;
  width: 100%;
}

.ln {
  width: 1%;
  min-width: 52px;
  text-align: right;
  padding: 0 10px 0 8px;
  color: var(--ink-faint);
  background: var(--surface);
  border-right: 1px solid var(--rule);
  user-select: none;
  cursor: pointer;
  vertical-align: top;
  font-variant-numeric: tabular-nums;
  position: sticky;
  left: 0;
}

.ln:hover {
  color: var(--pencil);
  background: var(--pencil-wash);
}

.ln[data-has-thread="true"] {
  color: var(--pencil);
  box-shadow: inset 2px 0 0 var(--pencil);
}

.src {
  padding: 0 14px;
  white-space: pre;
  vertical-align: top;
}

.code tr:hover .src {
  background: var(--surface-sunk);
}

.code tr[data-flagged="true"] .src {
  background: var(--pencil-wash);
}

.thread-row td {
  padding: 0;
  background: var(--surface-sunk);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.thread-box {
  padding: 12px 14px 12px 56px;
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
  white-space: normal;
}

/* Syntax colours. Tuned to sit quietly next to the red pencil. */
.c-com {
  color: var(--ink-faint);
  font-style: italic;
}
.c-str {
  color: #0a6a5a;
}
.c-num {
  color: #8a5a00;
}
.c-kw {
  color: #7a2d8f;
}
.c-tag {
  color: #1d4f8f;
}
.c-attr {
  color: #8a5a00;
}
.c-punc {
  color: var(--ink-soft);
}

:root[data-theme="dark"] .c-str {
  color: #7fc9b3;
}
:root[data-theme="dark"] .c-num {
  color: #d9a869;
}
:root[data-theme="dark"] .c-kw {
  color: #c99adc;
}
:root[data-theme="dark"] .c-tag {
  color: #86b4e8;
}
:root[data-theme="dark"] .c-attr {
  color: #d9a869;
}

/* ---------------------------------------------------------------- *
   Diff
   ---------------------------------------------------------------- */
.diff .ln {
  cursor: default;
  min-width: 44px;
}

.diff .ln:hover {
  color: var(--ink-faint);
  background: var(--surface);
}

.diff tr[data-op="add"] .src {
  background: var(--add-wash);
}

.diff tr[data-op="del"] .src {
  background: var(--del-wash);
}

.diff .sign {
  display: inline-block;
  width: 1ch;
  color: var(--ink-faint);
}

.diff-stat {
  display: inline-flex;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
}

.diff-stat .plus {
  color: var(--approve);
}

.diff-stat .minus {
  color: var(--pencil);
}

/* ---------------------------------------------------------------- *
   Preview
   ---------------------------------------------------------------- */
.preview-frame {
  width: 100%;
  height: 72vh;
  border: 0;
  display: block;
  background: #fff;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--ink-soft);
  cursor: pointer;
}

/* ---------------------------------------------------------------- *
   Annotations column
   ---------------------------------------------------------------- */
.margin {
  padding: 10px 0 0 20px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}

.margin h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 17px;
  margin: 0 0 2px;
}

.margin__hint {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin: 0 0 14px;
}

.thread {
  border-left: 2px solid var(--rule);
  padding: 0 0 0 12px;
  margin-bottom: 16px;
}

.thread[data-open="true"] {
  border-left-color: var(--pencil);
}

.thread[data-resolved="true"] {
  opacity: 0.6;
}

.comment {
  margin-bottom: 10px;
}

.comment__head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--ink-faint);
  margin-bottom: 3px;
}

.comment__author {
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
}

.comment__body {
  font-size: 13.5px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0;
}

.comment__actions {
  display: flex;
  gap: 2px;
  margin-top: 4px;
}

.comment__actions button {
  font-size: 12px;
  border: none;
  background: none;
  color: var(--ink-faint);
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 3px;
}

.comment__actions button:hover {
  background: var(--surface-sunk);
  color: var(--ink);
}

.line-ref {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--pencil);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.line-quote {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  background: var(--surface-sunk);
  border-radius: 3px;
  padding: 3px 6px;
  margin: 0 0 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.composer textarea {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface);
  padding: 8px 10px;
  font-size: 13.5px;
  resize: vertical;
  min-height: 62px;
}

.composer__row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 6px;
}

.stale-note {
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-bottom: 14px;
  background: var(--surface);
}

/* ---------------------------------------------------------------- *
   Dialog
   ---------------------------------------------------------------- */
dialog {
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  padding: 0;
  width: min(560px, calc(100vw - 32px));
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18);
}

dialog::backdrop {
  background: rgba(20, 18, 15, 0.42);
}

.dialog__head {
  padding: 20px 24px 0;
}

.dialog__head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 21px;
  margin: 0 0 4px;
}

.dialog__head p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13.5px;
}

.dialog__body {
  padding: 18px 24px;
  display: grid;
  gap: 14px;
  max-height: 68vh;
  overflow-y: auto;
}

.dialog__foot {
  padding: 14px 24px 20px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  align-items: center;
}

.field label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
}

.field small {
  display: block;
  color: var(--ink-faint);
  font-size: 12px;
  margin-top: 4px;
}

.field input[type="text"],
.field textarea {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  padding: 8px 10px;
}

.field textarea {
  resize: vertical;
  min-height: 60px;
}

.drop {
  border: 1px dashed var(--rule-strong);
  border-radius: 5px;
  padding: 22px;
  text-align: center;
  background: var(--paper);
  cursor: pointer;
}

.drop[data-active="true"] {
  border-color: var(--pencil);
  background: var(--pencil-wash);
}

.drop[data-filled="true"] {
  border-style: solid;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 12px;
}

.drop__name {
  font-family: var(--mono);
  font-size: 13px;
}

.drop__meta {
  font-size: 12px;
  color: var(--ink-faint);
}

.dialog-error {
  color: var(--pencil);
  font-size: 13px;
  margin-right: auto;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  padding: 9px 16px;
  font-size: 13.5px;
  z-index: 60;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- *
   Narrow screens: the margin column drops below the source.
   ---------------------------------------------------------------- */
@media (max-width: 1080px) {
  .work {
    grid-template-columns: minmax(0, 1fr);
  }

  .pane {
    border-right: 0;
  }

  .viewer {
    margin-right: 0;
  }

  .margin {
    position: static;
    padding: 24px 0 0;
    max-height: none;
    border-top: 1px solid var(--rule);
    margin-top: 24px;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 16px 14px 64px;
  }

  .masthead__inner {
    padding: 0 14px;
    gap: 10px;
  }

  .wordmark {
    white-space: nowrap;
    font-size: 17px;
  }

  .omnisearch {
    flex: none;
  }

  .whoami {
    white-space: nowrap;
    max-width: 104px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .doc-head__actions {
    flex-wrap: wrap;
  }

  .rail {
    max-width: 100%;
  }

  .doc {
    grid-template-columns: 3px 1fr;
  }

  .doc__side {
    grid-column: 2;
    padding: 0 0 14px;
  }

  .doc-head h1 {
    font-size: 24px;
  }
}

/* ================================================================== *
   Enhancements
   Search palette, activity feed, reviewer assignment, side-by-side
   compare, and the list controls that go with them.
   ================================================================== */

/* ---------------------------------------------------------------- *
   Masthead search
   ---------------------------------------------------------------- */
.omnisearch {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 10px;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--paper);
  color: var(--ink-faint);
  cursor: pointer;
  min-width: 220px;
  transition: border-color 0.12s ease, color 0.12s ease;
}

.omnisearch:hover {
  border-color: var(--rule-strong);
  color: var(--ink-soft);
}

.omnisearch__label {
  flex: 1;
  text-align: left;
  font-size: 13px;
}

.omnisearch__kbd,
kbd {
  font-family: var(--mono);
  font-size: 10.5px;
  line-height: 1;
  padding: 3px 5px;
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink-soft);
}

@media (max-width: 860px) {
  .omnisearch {
    min-width: 0;
  }
  .omnisearch__label,
  .omnisearch__kbd {
    display: none;
  }
}

/* ---------------------------------------------------------------- *
   Command palette
   ---------------------------------------------------------------- */
.palette {
  width: min(680px, calc(100vw - 32px));
  padding: 0;
  margin-top: 12vh;
  overflow: hidden;
}

.palette__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-faint);
}

.palette__input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  height: 52px;
  font-size: 16px;
}

.palette__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.palette__results {
  max-height: min(52vh, 460px);
  overflow-y: auto;
}

.palette__row {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  cursor: pointer;
  padding: 10px 16px;
  border-bottom: 1px solid var(--rule);
}

.palette__row[data-active="true"] {
  background: var(--surface-sunk);
}

.palette__row-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.palette__row-title {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
}

.palette__row-hits {
  display: block;
  margin-top: 4px;
}

.palette__hit {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-soft);
  padding: 1px 0;
}

.palette__hit-where {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  flex: none;
  width: 68px;
}

.palette__hit-line {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--pencil);
  flex: none;
}

.palette__hit-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.palette__empty,
.panel__empty {
  padding: 28px 16px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 13.5px;
}

.palette__hint {
  display: flex;
  gap: 16px;
  padding: 8px 16px;
  border-top: 1px solid var(--rule);
  background: var(--paper);
  font-size: 11.5px;
  color: var(--ink-faint);
}

.palette__hint kbd {
  margin-right: 3px;
}

/* ---------------------------------------------------------------- *
   List controls
   ---------------------------------------------------------------- */
.filters__spacer {
  flex: 1;
}

.chip--mine {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
}

.chip--mine[aria-pressed="true"] {
  border-color: var(--pencil);
  color: var(--pencil);
  background: var(--pencil-wash);
}

.sort {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-faint);
}

.sort-select {
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface);
  padding: 4px 6px;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.list-summary {
  display: flex;
  gap: 14px;
  align-items: center;
  margin: 0 0 10px;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.list-summary__flag {
  color: var(--pencil);
  font-weight: 600;
}

.list-summary__warn {
  color: var(--review);
}

.empty__actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* Board = list beside the activity rail. */
.board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

@media (max-width: 1080px) {
  .board {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------------------------------------------------------------- *
   Reviewers
   ---------------------------------------------------------------- */
.avatar--xs {
  width: 17px;
  height: 17px;
  font-size: 8.5px;
}

.avatar--xs[data-me="true"] {
  background: var(--pencil-wash);
  color: var(--pencil);
}

.doc__reviewers {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--ink-faint);
}

.doc__more {
  font-size: 11px;
  color: var(--ink-faint);
}

.mine-flag {
  font-size: 11px;
  font-weight: 600;
  color: var(--pencil);
  background: var(--pencil-wash);
  border-radius: 3px;
  padding: 2px 7px;
  white-space: nowrap;
}

.reviewers {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.reviewers__label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}

.reviewers__none {
  font-size: 13px;
  color: var(--ink-faint);
  font-style: italic;
}

.reviewer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  padding: 3px 4px 3px 4px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--surface);
}

.reviewer[data-me="true"] {
  border-color: var(--pencil);
  color: var(--pencil);
}

.reviewer__x {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--ink-faint);
  display: grid;
  place-items: center;
  padding: 2px;
  border-radius: 50%;
}

.reviewer__x:hover {
  color: var(--pencil);
  background: var(--pencil-wash);
}

.reviewer-add {
  border: 1px dashed var(--rule-strong);
  background: none;
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 12.5px;
  color: var(--ink-soft);
  cursor: pointer;
}

.reviewer-add:hover {
  border-color: var(--pencil);
  color: var(--pencil);
}

.btn--tiny {
  padding: 1px 7px;
  font-size: 11px;
  margin-left: 8px;
}

/* ---------------------------------------------------------------- *
   Activity feed
   ---------------------------------------------------------------- */
.panel {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--surface);
  overflow: hidden;
}

.margin .panel {
  margin-top: 22px;
}

.panel__title {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  padding: 11px 14px;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.act-list {
  max-height: 520px;
  overflow-y: auto;
}

.act-list .loading {
  padding: 20px 14px;
}

.act {
  display: flex;
  gap: 10px;
  padding: 9px 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}

.act:last-child {
  border-bottom: none;
}

.act:hover {
  background: var(--paper);
}

.act__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-top: 6px;
  flex: none;
  background: var(--rule-strong);
}

.act[data-type="approved"] .act__dot {
  background: var(--approve);
}

.act[data-type="comment"] .act__dot {
  background: var(--pencil);
}

.act[data-type="version"] .act__dot,
.act[data-type="created"] .act__dot {
  background: var(--review);
}

.act__body {
  min-width: 0;
  flex: 1;
}

.act__line {
  display: block;
  font-size: 12.5px;
  color: var(--ink);
}

.act__doc {
  color: var(--ink-soft);
}

.act__detail {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 1px;
}

.act__when {
  display: block;
  font-size: 11px;
  color: var(--ink-faint);
  margin-top: 2px;
}

/* ---------------------------------------------------------------- *
   Side-by-side compare
   ---------------------------------------------------------------- */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  min-height: 420px;
}

.compare__side {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  min-width: 0;
}

.compare__head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--rule);
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--paper);
}

.compare__head[data-tone="old"] {
  box-shadow: inset 3px 0 0 var(--rule-strong);
}

.compare__head[data-tone="new"] {
  box-shadow: inset 3px 0 0 var(--pencil);
}

.compare__ok {
  color: var(--approve);
}

.compare__side .preview-frame {
  flex: 1;
  min-height: 420px;
  border: none;
  width: 100%;
  background: #fff;
}

.compare__error {
  padding: 16px;
  font-size: 13px;
  color: var(--pencil);
  background: var(--pencil-wash);
}

@media (max-width: 900px) {
  .compare {
    grid-template-columns: 1fr;
  }
}

/* ---------------------------------------------------------------- *
   Shortcuts sheet
   ---------------------------------------------------------------- */
.sheet {
  padding: 24px;
}

.sheet--narrow {
  width: min(420px, calc(100vw - 32px));
}

.sheet h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 19px;
  margin: 0 0 16px;
}

.shortcuts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 9px 18px;
  align-items: center;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.shortcuts__keys {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
}

.sheet__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 22px;
}

/* ================================================================== *
   Developer Tools shell, wide preview, and preview annotations
   ================================================================== */

/* ---------------------------------------------------------------- *
   Section nav
   ---------------------------------------------------------------- */
/* ---------------------------------------------------------------- *
   Collapsible review column
   ---------------------------------------------------------------- */
.work[data-margin="collapsed"] {
  grid-template-columns: minmax(0, 1fr);
}

.work[data-margin="collapsed"] > .margin {
  display: none;
}

.work[data-margin="collapsed"] > .pane {
  border-right: none;
}

.chip--margin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-faint);
}

.chip--margin:hover {
  color: var(--ink);
  background: var(--surface-sunk);
}

/* A wider frame when the review column is out of the way. */
.work[data-margin="collapsed"] .preview-frame {
  min-height: calc(100vh - 190px);
}

.preview-frame {
  min-height: 560px;
}

/* ---------------------------------------------------------------- *
   Preview annotations
   ---------------------------------------------------------------- */
.margin__sub {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin: 0 0 8px;
}

.anno-list {
  margin-bottom: 18px;
}

.anno {
  border-left: 2px solid var(--review);
  padding-left: 10px;
  margin-bottom: 14px;
}

.anno[data-resolved="true"] {
  border-left-color: var(--rule-strong);
  opacity: 0.65;
}

.anno[data-flagged="true"] {
  background: var(--review-wash);
  border-radius: 0 4px 4px 0;
}

.anno__quote {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  padding: 0 0 4px;
  cursor: pointer;
  color: var(--ink-soft);
}

.anno__quote:hover .anno__text {
  color: var(--ink);
  text-decoration: underline;
}

.anno__n {
  flex: none;
  min-width: 15px;
  height: 15px;
  border-radius: 8px;
  background: var(--pencil);
  color: #fff;
  font: 600 9px/15px var(--sans);
  text-align: center;
}

.anno__text {
  font-size: 12px;
  font-style: italic;
  line-height: 1.45;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* ---- the composer that opens from a selection ---- */
.pending-host:empty {
  display: none;
}

.pending {
  border: 1px solid var(--pencil);
  border-radius: 5px;
  background: var(--pencil-wash);
  padding: 10px 12px;
  margin-bottom: 16px;
}

.pending__head {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
}

.pending__label {
  flex: 1;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--pencil);
}

.pending__x {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--pencil);
  display: grid;
  place-items: center;
  padding: 2px;
  border-radius: 50%;
}

.pending__x:hover {
  background: rgba(171, 52, 24, 0.14);
}

.pending__quote {
  margin: 0 0 9px;
  padding-left: 9px;
  border-left: 2px solid var(--pencil);
  font-size: 12.5px;
  font-style: italic;
  color: var(--ink);
  max-height: 84px;
  overflow-y: auto;
}

.pending .composer textarea {
  background: var(--surface);
}

/* ================================================================== *
   Side navigation and sign-in
   ================================================================== */

.layout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  min-height: calc(100vh - 57px);
}

.sidenav {
  width: 232px;
  flex: none;
  border-right: 1px solid var(--rule);
  background: var(--surface);
  padding: 14px 10px;
  position: sticky;
  top: 0;
  /* An explicit height, not just a max: the grid row is only as tall as
     the content, so the rule would otherwise stop mid-page. */
  height: calc(100vh - 57px);
  overflow-y: auto;
  transition: width 0.14s ease;
}

.sidenav[data-rail="true"] {
  width: 56px;
  padding: 14px 6px;
}

.sidenav__head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 6px 10px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}

.sidenav__title {
  flex: 1;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-faint);
}

.sidenav[data-rail="true"] .sidenav__title {
  display: none;
}

.sidenav__toggle {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--ink-faint);
  display: grid;
  place-items: center;
  padding: 4px;
  border-radius: 4px;
}

.sidenav__toggle:hover {
  color: var(--ink);
  background: var(--surface-sunk);
}

.sidenav[data-rail="true"] .sidenav__toggle {
  margin: 0 auto;
}

.navgroup__head {
  display: flex;
  align-items: center;
  gap: 2px;
}

.navitem {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  border-radius: 5px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 13.5px;
}

.navitem:hover {
  background: var(--paper);
  color: var(--ink);
}

.navitem[aria-current="page"] {
  background: var(--surface-sunk);
  color: var(--ink);
  font-weight: 600;
}

.navitem__icon {
  flex: none;
  display: grid;
  place-items: center;
  color: var(--pencil);
}

.navitem__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidenav[data-rail="true"] .navitem {
  justify-content: center;
  padding: 9px 0;
}

.sidenav[data-rail="true"] .navitem__label,
.sidenav[data-rail="true"] .navitem__chevron,
.sidenav[data-rail="true"] .sidenav__foot {
  display: none;
}

.navitem__chevron {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--ink-faint);
  display: grid;
  place-items: center;
  padding: 5px;
  border-radius: 4px;
  transition: transform 0.14s ease;
}

.navitem__chevron:hover {
  color: var(--ink);
  background: var(--surface-sunk);
}

.navitem__chevron[aria-expanded="false"] {
  transform: rotate(-90deg);
}

.navgroup__children {
  display: flex;
  flex-direction: column;
  margin: 2px 0 8px 18px;
  padding-left: 10px;
  border-left: 1px solid var(--rule);
}

.navchild {
  padding: 5px 8px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.navchild:hover {
  color: var(--ink);
  background: var(--paper);
}

.navchild[aria-current="page"] {
  color: var(--pencil);
  font-weight: 600;
}

.sidenav__foot {
  margin: 14px 8px 0;
  font-size: 11px;
  color: var(--ink-faint);
}

/* The shell already pads itself; inside the layout it also needs room
   from the nav, and no longer needs to centre on the whole viewport. */
.layout > #app {
  min-width: 0;
}

.layout .shell {
  padding-left: 28px;
  padding-right: 28px;
}

@media (max-width: 880px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .sidenav {
    width: auto;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  .sidenav[data-rail="true"] {
    width: auto;
  }
  .sidenav__list {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
  }
  .navgroup__children {
    display: none;
  }
}

/* ---------------------------------------------------------------- *
   Sign in with Google
   ---------------------------------------------------------------- */
.btn--google {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  white-space: nowrap;
}

.btn--google svg {
  color: var(--pencil);
}

.account {
  display: flex;
  align-items: center;
  gap: 4px;
}

.avatar--photo {
  object-fit: cover;
  background: var(--surface-sunk);
}