/* The styles of the meertex web app.

   GitHub's Primer is the reference: the system font stack, 14px text, 1px
   borders with a 6px radius, calm greys and blue links. Light theme only. The
   logo's warm amber shows up in two places only (the selected tab and the
   brand mark), so the page stays quiet. */

:root {
  color-scheme: light;

  --fg: #1f2328;
  --fg-muted: #59636e;
  --fg-subtle: #818b98;
  --fg-on-emphasis: #ffffff;

  --bg: #ffffff;
  --bg-subtle: #f6f8fa;
  --bg-muted: #eff2f5;
  --bg-hover: #f3f5f7;

  --border: #d1d9e0;
  --border-muted: #d1d9e0b3;

  --accent: #0969da;
  --accent-bg: #ddf4ff;
  --accent-border: #54aeff66;
  --accent-emph: #0969da;

  --success: #1a7f37;
  --success-bg: #dafbe1;
  --success-border: #4ac26b66;
  --success-emph: #1f883d;
  --success-emph-hover: #1c8139;

  --attention: #9a6700;
  --attention-bg: #fff8c5;
  --attention-border: #d4a72c66;
  --attention-emph: #bf8700;

  --danger: #d1242f;
  --danger-bg: #ffebe9;
  --danger-border: #ff818266;
  --danger-emph: #cf222e;

  --done: #8250df;
  --done-bg: #fbefff;

  --neutral-muted: #818b981f;

  --brand: #d99a2b;
  --brand-dark: #7a4a1f;

  --diff-add-bg: #dafbe1;
  --diff-add-num: #aceebb;
  --diff-add-word: #aceebb;
  --diff-del-bg: #ffebe9;
  --diff-del-num: #ffcecb;
  --diff-del-word: #ffcecb;
  --diff-hunk-bg: #ddf4ff;

  --radius: 6px;
  --shadow-sm: 0 1px 0 #1f23280a;
  --shadow-overlay: 0 0 0 1px #d1d9e080, 0 6px 12px -3px #25292e0a, 0 6px 18px 0 #25292e1f;
  --focus: 2px solid #0969da;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: break-word;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: var(--focus);
  outline-offset: -2px;
  border-radius: var(--radius);
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.25; }
h1 { font-size: 24px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
h4 { font-size: 14px; }
p { margin: 0 0 10px; }
code, kbd, pre, samp, .mono { font-family: var(--mono); font-size: 12px; }
code {
  padding: .2em .4em;
  background: var(--neutral-muted);
  border-radius: var(--radius);
  font-size: 85%;
}
pre { margin: 0; }
hr { height: 0; margin: 24px 0; border: 0; border-bottom: 1px solid var(--border-muted); }
[hidden] { display: none !important; }
button { font: inherit; }
img { max-width: 100%; }

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

.skip-link {
  position: absolute; left: 8px; top: -40px; z-index: 100;
  padding: 6px 12px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
}
.skip-link:focus { top: 8px; }

/* --- Utilities ----------------------------------------------------------- */

.color-muted { color: var(--fg-muted); }
.color-fg { color: var(--fg); }
.color-subtle { color: var(--fg-subtle); }
.color-danger { color: var(--danger); }
.color-attention { color: var(--attention); }
.color-success { color: var(--success); }
.text-small { font-size: 12px; }
.text-bold { font-weight: 600; }
.text-normal { font-weight: 400; }
.text-mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }
.flex { display: flex; align-items: center; gap: 8px; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 auto; min-width: 0; }
.gap-4 { gap: 4px; }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.ml-auto { margin-left: auto; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
.container-md { max-width: 1012px; }
.container-sm { max-width: 768px; }
/* Forms with a row of date fields need a little more than GitHub's 768px. */
.container-form { max-width: 920px; }

.icon { flex: none; display: inline-block; vertical-align: text-bottom; overflow: visible; }

/* --- App header ---------------------------------------------------------- */

.app-header {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
.app-header-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 0 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  font-size: 16px;
  font-weight: 600;
  padding: 4px 6px;
  border-radius: var(--radius);
}
.brand:hover { text-decoration: none; background: var(--bg-muted); }
.brand img { width: 32px; height: 32px; }
.brand-word span { color: var(--brand-dark); }
.header-crumbs { display: flex; align-items: center; gap: 4px; min-width: 0; font-size: 14px; }
.header-crumbs .sep { color: var(--fg-subtle); }
.header-crumbs a { color: var(--fg); font-weight: 600; padding: 2px 6px; border-radius: var(--radius); }
.header-crumbs a:hover { text-decoration: none; background: var(--bg-muted); }
/* A page's own buttons sit in the header's row as if they were its own. */
#header-page-actions { display: contents; }
.header-search {
  width: 280px;
  max-width: 34vw;
}
.header-search .form-control { width: 100%; height: 32px; background: var(--bg); }

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  line-height: 1;
  text-transform: uppercase;
  user-select: none;
  box-shadow: 0 0 0 1px #1f23281a;
}
.avatar-32 { width: 32px; height: 32px; font-size: 13px; }
.avatar-40 { width: 40px; height: 40px; font-size: 15px; }
.avatar-96 { width: 96px; height: 96px; font-size: 34px; }
img.avatar { object-fit: cover; background: var(--bg-subtle); }
.avatar-btn {
  display: inline-flex; align-items: center; gap: 4px; padding: 0; border: 0; background: none; cursor: pointer;
  border-radius: 50%;
}

.app-footer {
  margin-top: 40px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--border-muted);
  color: var(--fg-muted);
  font-size: 12px;
}
.app-footer .container { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.app-footer img { width: 20px; height: 20px; }

.boot {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 80px 16px; color: var(--fg-muted);
}

/* --- Buttons ------------------------------------------------------------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  white-space: nowrap;
  color: var(--fg);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  transition: background-color .08s ease;
}
.btn:hover { background: var(--bg-muted); text-decoration: none; }
.btn:active { background: #e6eaef; }
.btn:disabled, .btn[aria-disabled="true"] {
  color: var(--fg-subtle);
  background: var(--bg-subtle);
  border-color: var(--border-muted);
  cursor: not-allowed;
  box-shadow: none;
}
.btn .icon { color: var(--fg-muted); }
.btn-sm { height: 28px; padding: 0 8px; font-size: 12px; gap: 4px; }
.btn-lg { height: 40px; padding: 0 16px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }
.btn-primary {
  color: var(--fg-on-emphasis);
  background: var(--success-emph);
  border-color: #1f232826;
  box-shadow: 0 1px 0 #1f23281a;
}
.btn-primary .icon { color: inherit; }
.btn-primary:hover { background: var(--success-emph-hover); }
.btn-primary:active { background: #197935; }
.btn-primary:disabled { color: #ffffffcc; background: #95d8a6; border-color: #95d8a6; }
.btn-danger { color: var(--danger-emph); }
.btn-danger .icon { color: inherit; }
.btn-danger:hover { color: #fff; background: #a40e26; border-color: #1f232826; }
.btn-danger:disabled:hover { color: var(--fg-subtle); background: var(--bg-subtle); }
.btn-invisible {
  color: var(--accent);
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}
.btn-invisible:hover { background: var(--bg-muted); }
.btn-octicon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; padding: 0;
  color: var(--fg-muted); background: transparent; border: 0; border-radius: var(--radius); cursor: pointer;
}
.btn-octicon:hover { color: var(--accent); background: var(--bg-muted); }
.btn-octicon.danger:hover { color: var(--danger); }
.btn-octicon.done-toggle:hover, .btn-octicon.done-toggle.is-done { color: var(--success); }
.btn-octicon:disabled { color: var(--fg-subtle); cursor: not-allowed; background: none; }
.btn-link {
  display: inline; padding: 0; color: var(--accent); background: none; border: 0; cursor: pointer;
  font-size: inherit; text-align: left;
}
.btn-link:hover { text-decoration: underline; }
.btn-group { display: inline-flex; }
.btn-group > .btn { border-radius: 0; margin-left: -1px; }
.btn-group > .btn:first-child { border-radius: var(--radius) 0 0 var(--radius); margin-left: 0; }
.btn-group > .btn:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.btn-group > .btn[aria-pressed="true"] { background: var(--bg); font-weight: 600; z-index: 1; }
.btn[aria-pressed="true"] { color: var(--accent); background: var(--accent-bg); border-color: var(--accent-border); }
.btn[aria-pressed="true"] .icon { color: var(--accent); }

/* A segmented control like Primer's, a muted track with a raised selection. */
.segmented {
  display: inline-flex; padding: 2px; gap: 2px;
  background: var(--bg-muted); border: 1px solid var(--border); border-radius: var(--radius);
}
.segmented button {
  height: 26px; padding: 0 12px; border: 1px solid transparent; border-radius: 5px; background: transparent;
  font-size: 12px; font-weight: 500; color: var(--fg); cursor: pointer;
}
.segmented button[aria-pressed="true"] { background: var(--bg); border-color: var(--border); font-weight: 600; }

/* --- Forms --------------------------------------------------------------- */

.form-control, .form-select {
  display: inline-block;
  max-width: 100%;
  height: 32px;
  padding: 5px 12px;
  font: inherit;
  font-size: 14px;
  line-height: 20px;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 1px 0 #d1d9e033;
  vertical-align: middle;
}
textarea.form-control { height: auto; min-height: 96px; resize: vertical; }
.form-select {
  padding-right: 28px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%2359636e' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4.5 6.25 8 9.75l3.5-3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
}
.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.form-control::placeholder { color: var(--fg-subtle); }
.form-control:disabled, .form-select:disabled { color: var(--fg-muted); background: var(--bg-subtle); }
.form-control.is-invalid { border-color: var(--danger); }
.form-control-sm { height: 28px; padding: 3px 8px; font-size: 12px; }
.form-select.form-control-sm { padding-right: 26px; background-position: right 4px center; }
.input-block { display: block; width: 100%; }
.input-mono { font-family: var(--mono); font-size: 13px; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--accent); margin: 0; }

.form-group { margin: 0 0 16px; }
.form-group > label, .form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 14px;
}
.form-label .optional, .form-group > label .optional { font-weight: 400; color: var(--fg-muted); }
.form-hint { margin-top: 4px; color: var(--fg-muted); font-size: 12px; }
.form-error { margin-top: 4px; color: var(--danger); font-size: 12px; }
.form-label-row { display: flex; align-items: center; gap: 2px; margin-bottom: 6px; }
.form-label-row > .form-label { margin-bottom: 0; }
.form-info { width: 20px; height: 20px; }
.limit-table { width: 100%; margin-bottom: 12px; border-collapse: collapse; font-size: 13px; }
.limit-table th, .limit-table td { padding: 6px 8px; text-align: left; border-top: 1px solid var(--border-muted); }
.limit-table th { font-weight: 600; background: var(--bg-subtle); }
.limit-help ul { margin: 0 0 10px; padding-left: 20px; }
.limit-help li + li { margin-top: 4px; }
.form-row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.form-row > .form-group { min-width: 0; }
.form-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form-checkbox { display: flex; gap: 8px; align-items: flex-start; margin: 8px 0; }
.form-checkbox input { margin-top: 3px; }
.form-checkbox label { font-weight: 600; }
.form-checkbox .form-hint { margin-top: 0; font-weight: 400; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 6px; font-weight: 600; }

/* --- Box ----------------------------------------------------------------- */

.box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px;
  margin: -1px -1px 0;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
}
.box-header-sm { padding: 8px 16px; min-height: 48px; }
.box-title { font-size: 14px; font-weight: 600; margin: 0; }
.box-body { padding: 16px; }
.box-row {
  padding: 16px;
  border-top: 1px solid var(--border-muted);
  list-style: none;
}
.box-header + .box-row, .box-row:first-child { border-top: 0; }
.box-row-sm { padding: 8px 16px; }
.box-row:last-child { border-bottom-left-radius: var(--radius); border-bottom-right-radius: var(--radius); }
.box-row.hoverable:hover { background: var(--bg-subtle); }
.box-footer { padding: 12px 16px; border-top: 1px solid var(--border-muted); }
.box-danger { border-color: var(--danger-border); }
.box-danger .box-row { border-top-color: var(--border-muted); }
.box-list { margin: 0; padding: 0; list-style: none; }

.blankslate {
  padding: 32px 16px;
  text-align: center;
  color: var(--fg-muted);
}
.blankslate .icon { color: var(--fg-subtle); margin-bottom: 8px; }
.blankslate h3 { color: var(--fg); margin-bottom: 4px; font-size: 20px; }
.blankslate p { margin: 4px auto 16px; max-width: 480px; }

/* --- Labels, counters, topics -------------------------------------------- */

.Label, .label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 7px;
  font-size: 12px;
  font-weight: 500;
  line-height: 18px;
  white-space: nowrap;
  border: 1px solid var(--border);
  border-radius: 2em;
  color: var(--fg-muted);
  background: transparent;
  vertical-align: middle;
}
.label-success { color: var(--success); border-color: var(--success); }
.label-danger { color: var(--danger); border-color: var(--danger); }
.label-attention { color: var(--attention); border-color: var(--attention-emph); }
.label-accent { color: var(--accent); border-color: var(--accent); }
.label-done { color: var(--done); border-color: var(--done); }
.label-secondary { color: var(--fg-muted); border-color: var(--border); }
.label-lg { padding: 0 10px; line-height: 24px; font-size: 14px; }

.counter {
  display: inline-block;
  min-width: 20px;
  padding: 0 6px;
  font-size: 12px;
  font-weight: 500;
  line-height: 18px;
  text-align: center;
  color: var(--fg);
  background: var(--neutral-muted);
  border: 1px solid transparent;
  border-radius: 2em;
}
.counter-attention { background: var(--attention-bg); color: var(--attention); border-color: var(--attention-border); }

.topic {
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 500;
  line-height: 22px;
  color: var(--accent);
  background: var(--accent-bg);
  border-radius: 2em;
  white-space: nowrap;
}
a.topic:hover { background: var(--accent-emph); color: #fff; text-decoration: none; }
.topic-list { display: flex; flex-wrap: wrap; gap: 4px; }

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 6px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 20px;
  color: var(--fg-muted);
  background: var(--bg-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius);
}
a.tag-pill:hover { color: var(--accent); text-decoration: none; }

.sha {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
}

.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex: none; }
.dot-attention { background: var(--attention-emph); }

/* --- Flash --------------------------------------------------------------- */

.flash-region { display: flex; flex-direction: column; gap: 8px; }
.flash-region:not(:empty) { padding-top: 16px; }
.flash {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 16px;
  color: var(--fg);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
}
.flash > .icon { margin-top: 2px; color: var(--accent); }
.flash-body { flex: 1 1 auto; min-width: 0; }
.flash-body p:last-child { margin-bottom: 0; }
.flash-close { margin: -6px -8px -6px 0; }
.flash-success { background: var(--success-bg); border-color: var(--success-border); }
.flash-success > .icon { color: var(--success); }
.flash-warn { background: var(--attention-bg); border-color: var(--attention-border); }
.flash-warn > .icon { color: var(--attention); }
.flash-error { background: var(--danger-bg); border-color: var(--danger-border); }
.flash-error > .icon { color: var(--danger); }
.flash-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.flash .inline-form { margin-top: 12px; }

/* --- Dropdown menus ------------------------------------------------------ */

.dropdown { position: relative; display: inline-block; }
.dropdown > summary { list-style: none; cursor: pointer; }
.dropdown > summary::-webkit-details-marker { display: none; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 50;
  min-width: 200px;
  max-width: min(320px, calc(100vw - 32px));
  max-height: 60vh;
  overflow-y: auto;
  padding: 8px 0;
  background: var(--bg);
  border-radius: 12px;
  box-shadow: var(--shadow-overlay);
}
.dropdown-menu-right { left: auto; right: 0; }
.dropdown-wide { min-width: 300px; }
.dropdown-header {
  padding: 4px 16px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--fg-muted);
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: calc(100% - 16px);
  margin: 0 8px;
  padding: 6px 8px;
  font-size: 14px;
  color: var(--fg);
  text-align: left;
  background: none;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
}
.dropdown-item:hover, .dropdown-item:focus-visible { background: var(--bg-hover); text-decoration: none; outline: none; }
.dropdown-item:focus-visible { box-shadow: inset 0 0 0 2px var(--accent); }
.dropdown-item .icon { color: var(--fg-muted); }
.dropdown-item .check { width: 16px; visibility: hidden; color: var(--fg); }
.dropdown-item[aria-checked="true"] .check { visibility: visible; }
.dropdown-item.danger { color: var(--danger); }
.dropdown-item.danger .icon { color: var(--danger); }
.dropdown-item.danger:hover { background: var(--danger-bg); }
.dropdown-item:disabled { color: var(--fg-subtle); cursor: not-allowed; background: none; }
.dropdown-divider { height: 1px; margin: 8px 0; background: var(--border-muted); }
.dropdown-text { padding: 4px 16px; color: var(--fg-muted); font-size: 12px; }
.dropdown-body { padding: 8px 16px; }

/* --- Dialogs ------------------------------------------------------------- */

dialog.dialog {
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  padding: 0;
  color: var(--fg);
  background: var(--bg);
  border: 0;
  border-radius: 12px;
  box-shadow: var(--shadow-overlay);
}
dialog.dialog-wide { width: min(640px, calc(100vw - 32px)); }
dialog.dialog::backdrop { background: #1f232866; }
.dialog-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 8px 16px;
  border-bottom: 1px solid var(--border-muted);
}
.dialog-title { flex: 1; font-size: 14px; font-weight: 600; margin: 0; padding: 6px 0; }
.dialog-body { padding: 16px; overflow-y: auto; max-height: calc(100vh - 200px); }
.dialog-body > p:last-child { margin-bottom: 0; }
.dialog-footer {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--border-muted);
}
.choice {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}
.choice + .choice { margin-top: 8px; }
.form-group > label.choice { display: flex; margin-bottom: 0; font-weight: 400; }
.choice input { margin-top: 3px; }
.choice:has(input:checked) { border-color: var(--accent); background: #f6fbff; }
.choice strong { display: block; }
.choice span { color: var(--fg-muted); font-size: 12px; }

/* --- Underline navigation (the project tabs) ----------------------------- */

.underline-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: -1px;
}
.underline-nav::-webkit-scrollbar { display: none; }
.underline-nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 8px;
  color: var(--fg);
  font-size: 14px;
  white-space: nowrap;
  border: 0;
  background: none;
  cursor: pointer;
}
.underline-nav-item::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 8px; bottom: 8px;
  z-index: -1;
  border-radius: var(--radius);
}
.underline-nav-item:hover { text-decoration: none; }
.underline-nav-item:hover::before { background: var(--bg-muted); }
.underline-nav-item .icon { color: var(--fg-muted); }
.underline-nav-item[aria-current="page"] { font-weight: 600; }
.underline-nav-item[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: #fd8c73;
  border-radius: 6px;
}
.underline-nav-item[aria-current="page"] .icon { color: var(--fg); }
.underline-nav-item[aria-disabled="true"] { color: var(--fg-subtle); cursor: default; }
.underline-nav-item[aria-disabled="true"]:hover::before { background: none; }
.underline-nav-item[aria-disabled="true"] .icon { color: var(--fg-subtle); }

/* A CSS-only tooltip for the disabled Reviews tab, shown on hover and focus. */
[data-tooltip] { position: relative; }
[data-tooltip]:hover::after, [data-tooltip]:focus-visible::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% - 4px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  color: #fff;
  white-space: nowrap;
  background: #25292e;
  border-radius: var(--radius);
  pointer-events: none;
}

/* --- Project header ------------------------------------------------------ */

.repo-head {
  padding-top: 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

/* --- Page layouts -------------------------------------------------------- */

.page { padding-top: 24px; }
.page-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 8px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-muted);
}
.page-head h1, .page-head h2 { font-weight: 400; font-size: 24px; }
.page-lede { color: var(--fg-muted); margin: 4px 0 0; }

.layout-sidebar {
  display: grid;
  grid-template-columns: 296px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.layout-repo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 296px;
  gap: 24px;
  align-items: start;
}
.layout-settings {
  display: grid;
  grid-template-columns: 256px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.subhead {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-muted);
}
.subhead h2 { font-size: 24px; font-weight: 400; flex: 1; white-space: nowrap; }
.subhead h3 { font-size: 20px; font-weight: 400; flex: 1; }
.subhead + p { color: var(--fg-muted); }
.subhead-danger h3 { color: var(--fg); }

/* --- Side menu (settings) ------------------------------------------------ */

.side-menu { display: flex; flex-direction: column; gap: 2px; }
.side-menu a, .side-menu .side-menu-heading {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  color: var(--fg);
  border-radius: var(--radius);
}
.side-menu .side-menu-heading { color: var(--fg-muted); font-size: 12px; font-weight: 600; padding-top: 12px; }
.side-menu a .icon { color: var(--fg-muted); }
.side-menu a:hover { background: var(--bg-hover); text-decoration: none; }
.side-menu a[aria-current="page"] { background: var(--bg-muted); font-weight: 600; }
.side-menu a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -8px; top: 6px; bottom: 6px;
  width: 4px;
  background: var(--accent);
  border-radius: 6px;
}

/* --- Home, folders ------------------------------------------------------- */

.folders-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
/* On wide screens the tree is always open and its summary hidden. On a phone
   it folds away above the list, so the questions and papers come first. */
.folders-details > summary { display: none; }
@media (max-width: 767px) {
  .folders-details { border: 1px solid var(--border); border-radius: var(--radius); padding: 0 12px; }
  .folders-details[open] { padding-bottom: 12px; }
  .folders-details > summary {
    display: flex; align-items: center; gap: 8px; padding: 10px 0; cursor: pointer; list-style: none; font-weight: 600;
  }
  .folders-details > summary::-webkit-details-marker { display: none; }
  .folders-details > summary .current { font-weight: 400; color: var(--fg-muted); }
  .folders-details:not([open]) > summary .chev { transform: rotate(-90deg); }
}
.folders-head h2 { flex: 1; font-size: 14px; }
.tree { list-style: none; margin: 0; padding: 0; }
.tree ul { list-style: none; margin: 0; padding: 0; }
.tree-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 32px;
  padding-right: 4px;
  border-radius: var(--radius);
}
.tree-row:hover { background: var(--bg-hover); }
.tree-row[aria-current="page"] { background: var(--bg-muted); }
.tree-row[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -8px; top: 6px; bottom: 6px;
  width: 4px;
  background: var(--accent);
  border-radius: 6px;
}
.tree-row.drop-target { background: var(--accent-bg); box-shadow: inset 0 0 0 1px var(--accent); }
.tree-row.dragging { opacity: .5; }
.tree-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; padding: 0; flex: none;
  color: var(--fg-muted); background: none; border: 0; border-radius: 4px; cursor: pointer;
}
.tree-toggle:hover { background: var(--neutral-muted); }
.tree-toggle.spacer { visibility: hidden; cursor: default; }
.tree-link {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  padding: 5px 4px;
  color: var(--fg);
}
.tree-link:hover { text-decoration: none; }
.tree-link .icon { color: var(--fg-muted); }
.tree-row[aria-current="page"] .tree-link { font-weight: 600; }
.tree-count { color: var(--fg-muted); font-size: 12px; }
.tree-actions { opacity: 0; }
.tree-row:hover .tree-actions, .tree-row:focus-within .tree-actions, .tree-actions[open] { opacity: 1; }
.tree-edit { flex: 1; display: flex; gap: 4px; padding: 2px 0; }
.tree-edit .form-control { flex: 1; min-width: 0; }

/* --- Home, project list -------------------------------------------------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-muted);
}
.filter-bar .search { flex: 1 1 240px; position: relative; }
.filter-bar .search .icon { position: absolute; left: 10px; top: 8px; color: var(--fg-muted); pointer-events: none; }
.filter-bar .search input { width: 100%; padding-left: 32px; }
.filter-summary {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 12px 0; border-bottom: 1px solid var(--border-muted); color: var(--fg-muted);
}
.project-list { list-style: none; margin: 0; padding: 0; }
.project-row {
  display: flex;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-muted);
}
.project-row.dragging { opacity: .5; }
.project-main { flex: 1 1 auto; min-width: 0; }
.project-name-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.project-name {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
  word-break: break-word;
}
.project-title { margin: 4px 0 0; color: var(--fg-muted); max-width: 720px; }
.project-row .topic-list { margin-top: 8px; }
.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--fg-muted);
}
.project-meta > span, .project-meta > a { display: inline-flex; align-items: center; gap: 4px; }
.project-meta a { color: var(--fg-muted); }
.project-meta a:hover { color: var(--accent); }
.project-menu { flex: none; margin: -4px -8px 0 -8px; }
.project-side {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  width: 220px;
  text-align: right;
}

.next-date { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.next-date-what { font-size: 12px; color: var(--fg-muted); display: flex; align-items: center; gap: 4px; }
.next-date-when { font-weight: 600; }
.next-date-day { font-size: 12px; color: var(--fg-muted); }

.countdown { font-weight: 600; white-space: nowrap; }
.countdown.is-danger { color: var(--danger); }
.countdown.is-attention { color: var(--attention); }
.countdown.is-normal { color: var(--fg); }
.countdown.is-past { color: var(--fg-muted); font-weight: 400; }

.question-marker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 500;
  line-height: 22px;
  color: var(--attention);
  background: var(--attention-bg);
  border: 1px solid var(--attention-border);
  border-radius: 2em;
  white-space: nowrap;
}
a.question-marker:hover { text-decoration: none; border-color: var(--attention-emph); }

/* "Waiting for you": the questions box above the list. */
.waiting { margin-bottom: 24px; border-color: var(--attention-border); }
.waiting > .box-header { background: var(--attention-bg); border-color: var(--attention-border); }
.waiting > .box-header .icon { color: var(--attention); }
.question-row { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.question-row .question-text { flex: 1 1 320px; min-width: 0; }
.question-row .question-project { font-weight: 600; }
.question-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.inline-form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.inline-form .form-group { margin: 0; }
.inline-form .form-group > label { font-size: 12px; margin-bottom: 4px; }

/* --- Date editor rows ---------------------------------------------------- */

.date-rows { display: flex; flex-direction: column; gap: 8px; }
.date-row {
  display: grid;
  grid-template-columns: minmax(150px, 1.2fr) minmax(100px, 1fr) 150px 110px minmax(90px, 140px) 32px;
  gap: 8px;
  align-items: end;
}
.date-row .form-group { margin: 0; min-width: 0; }
.date-row .form-group > label { font-size: 12px; font-weight: 500; color: var(--fg-muted); margin-bottom: 4px; }
.date-row .form-control, .date-row .form-select { width: 100%; }
.date-row .btn-octicon { height: 32px; width: 32px; }
.date-row-error { grid-column: 1 / -1; }
.date-row.compact { grid-template-columns: 160px 120px minmax(120px, 180px); }
.date-rows-empty { color: var(--fg-muted); padding: 8px 0; }

/* --- Overview ------------------------------------------------------------ */

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline-item {
  position: relative;
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-top: 1px solid var(--border-muted);
}
.timeline-item:first-child { border-top: 0; }
.timeline-badge {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--fg-muted);
  background: var(--bg-muted);
  border: 2px solid var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--border-muted);
}
.timeline-item.is-next .timeline-badge { color: #fff; background: var(--accent); box-shadow: none; }
.timeline-item.is-done .timeline-badge { color: #fff; background: var(--success-emph); box-shadow: none; }
.timeline-item.is-missed .timeline-badge { color: var(--attention); background: var(--attention-bg); }
.timeline-body { flex: 1 1 auto; min-width: 0; }
.timeline-title { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.timeline-title strong { font-weight: 600; }
.timeline-when { color: var(--fg-muted); font-size: 12px; margin-top: 2px; display: flex; flex-wrap: wrap; gap: 4px 12px; }
.timeline-side { flex: none; display: flex; align-items: center; gap: 4px; text-align: right; }
.timeline-item.is-past .timeline-title strong,
.timeline-item.is-past .timeline-when { opacity: .75; }
.timeline-item.is-past .timeline-title strong { color: var(--fg-muted); font-weight: 500; }
.timeline-edit { padding: 16px; border-top: 1px solid var(--border-muted); background: var(--bg-subtle); }
.timeline-edit:first-child { border-top: 0; }
.moved { color: var(--attention); }

.about { padding-bottom: 16px; }
.about h2 { font-size: 16px; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.about h2 .btn-octicon { margin-left: auto; }
.about-lede { font-size: 16px; margin-bottom: 16px; }
.about-list { list-style: none; margin: 0; padding: 0; }
.about-list li { display: flex; gap: 8px; align-items: flex-start; margin-top: 8px; color: var(--fg-muted); }
.about-list li .icon { margin-top: 2px; }
.about-list li a, .about-list li span.value { color: var(--fg); min-width: 0; word-break: break-word; }
.about-list li a:hover { color: var(--accent); }
.about-list li a.link { color: var(--accent); font-weight: 600; }
.sidebar-section { padding: 16px 0; border-top: 1px solid var(--border-muted); }
.sidebar-section:first-child { border-top: 0; padding-top: 0; }
.sidebar-section h2 { font-size: 16px; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.sidebar-section h2 a { color: var(--fg); }
.sidebar-section h2 a:hover { color: var(--accent); text-decoration: none; }
.sidebar-version { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 8px; }
.sidebar-version .icon { color: var(--success); margin-top: 3px; }
.sidebar-version.muted .icon { color: var(--fg-muted); }
.people-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.people-list li { display: flex; align-items: center; gap: 8px; min-width: 0; }

.readme-box .box-header { background: var(--bg); border-bottom-color: var(--border-muted); padding: 8px 8px 8px 16px; }
.readme-box .box-header h2 { font-size: 14px; display: flex; align-items: center; gap: 8px; flex: 1; }
.markdown { font-size: 14px; line-height: 1.6; }
.markdown > *:first-child { margin-top: 0; }
.markdown > *:last-child { margin-bottom: 0; }
.markdown h1, .markdown h2, .markdown h3, .markdown h4 { margin: 20px 0 12px; }
.markdown h1 { font-size: 2em; padding-bottom: .3em; border-bottom: 1px solid var(--border-muted); }
.markdown h2 { font-size: 1.5em; padding-bottom: .3em; border-bottom: 1px solid var(--border-muted); }
.markdown h3 { font-size: 1.25em; }
.markdown p, .markdown ul, .markdown ol, .markdown pre, .markdown blockquote { margin: 0 0 16px; }
.markdown ul, .markdown ol { padding-left: 2em; }
.markdown pre { padding: 16px; overflow: auto; background: var(--bg-subtle); border-radius: var(--radius); font-size: 85%; }
.markdown pre code { padding: 0; background: none; font-size: 100%; }
.markdown blockquote { padding: 0 1em; color: var(--fg-muted); border-left: .25em solid var(--border); }

.setup-box h3 { font-size: 16px; margin-bottom: 8px; }
.setup-box p { color: var(--fg-muted); }

/* Copyable command line, like GitHub's clone URL field. */
.copy-field { display: flex; align-items: stretch; }
.copy-field input, .copy-field code.cmd {
  flex: 1 1 auto;
  min-width: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.copy-field .btn { border-top-left-radius: 0; border-bottom-left-radius: 0; margin-left: -1px; height: auto; min-height: 32px; }
code.cmd {
  display: block;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 20px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  white-space: pre-wrap;
  word-break: break-all;
}
.cmd-list { display: flex; flex-direction: column; gap: 8px; }
.cmd-list .cmd-caption { color: var(--fg-muted); font-size: 12px; margin-bottom: 2px; }
/* As wide as GitHub's Code menu, so a checkout command fits on one line. */
.checkout-menu .dropdown-menu { width: 400px; max-width: calc(100vw - 32px); max-height: 80vh; }

/* --- Files --------------------------------------------------------------- */

.files-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-size: 16px; min-width: 0; }
.breadcrumb a { font-weight: 600; }
.breadcrumb .sep { color: var(--fg-muted); }
.breadcrumb .current { font-weight: 600; }
.ref-button .ref-name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.file-table { width: 100%; border-collapse: collapse; }
.file-table td { padding: 8px 16px; border-top: 1px solid var(--border-muted); }
.file-table tr:first-child td { border-top: 0; }
.file-table tr:hover td { background: var(--bg-subtle); }
.file-table td.icon-cell { width: 32px; padding-right: 0; color: var(--fg-muted); }
.file-table td.icon-cell .icon.dir { color: #54aeff; }
.file-table td.size { width: 120px; text-align: right; color: var(--fg-muted); white-space: nowrap; }
.file-table td.name a { color: var(--fg); }
.file-table td.name a:hover { color: var(--accent); }
.file-table td.name { word-break: break-all; }
.code-box .box-header { padding: 8px 8px 8px 16px; }
.code-scroll { overflow-x: auto; }
.code-table { border-collapse: collapse; font-family: var(--mono); font-size: 12px; line-height: 20px; width: 100%; }
.code-table td { padding: 0 10px; vertical-align: top; }
.code-table .ln {
  width: 1%;
  min-width: 50px;
  color: var(--fg-subtle);
  text-align: right;
  user-select: none;
  white-space: nowrap;
}
.code-table .ln::before { content: attr(data-ln); }
.code-table .lc { white-space: pre-wrap; word-break: break-word; color: var(--fg); }
.code-table tr:first-child td { padding-top: 8px; }
.code-table tr:last-child td { padding-bottom: 8px; }
.image-preview { padding: 16px; text-align: center; background: var(--bg-subtle); }
.image-preview img { max-height: 70vh; background: #fff; box-shadow: 0 0 0 1px var(--border-muted); }

/* --- Editor -------------------------------------------------------------- */

/* The file tree, the text and the PDF fill the window below the project
   header. editor.js sets the shell's height, the PDF's width and the tree's
   width (--tree-width). On a phone the tree folds away behind the Files
   button, and the PDF takes the place of the text. */
.editor-shell {
  display: flex;
  height: 560px;
  min-height: 320px;
  border-bottom: 1px solid var(--border);
}
.editor-shell.is-resizing { cursor: col-resize; user-select: none; }
.editor-shell.is-resizing .editor-pdf { pointer-events: none; }
.editor-tree {
  display: flex;
  flex: 0 0 var(--tree-width, 272px);
  flex-direction: column;
  min-width: 0;
  max-width: 50%;
  min-height: 0;
}
.editor-tree-head, .editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 8px 8px 8px 16px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-muted);
}
.editor-tree-head h2 { flex: 1; font-size: 14px; }
.editor-tree-body { flex: 1 1 auto; min-height: 0; overflow: auto; padding: 8px 8px 24px 12px; }
.editor-tree-body.is-drop { background: var(--accent-bg); box-shadow: inset 0 0 0 2px var(--accent); }
.editor-tree-loading, .editor-tree-empty { display: flex; align-items: center; gap: 8px; padding: 8px 4px; color: var(--fg-muted); font-size: 12px; }
.editor-tree .tree-row { min-height: 28px; }
.editor-tree .tree-row[aria-current="page"]::before { left: -6px; }
.editor-tree .tree-link { gap: 6px; padding: 3px 4px; }
.editor-tree .tree-dir { font: inherit; text-align: left; background: none; border: 0; cursor: pointer; }
.editor-tree .icon.dir { color: #54aeff; }
.editor-tree .tree-link .Label { font-size: 11px; line-height: 16px; }
@media (hover: none) { .editor-tree .tree-actions { opacity: 1; } }
/* The outline under the files. Open, it takes what its headings need, at most
   45% of the column. Folded, only its header stays. */
.editor-outline { display: flex; flex: 0 0 auto; flex-direction: column; max-height: 45%; min-height: 0; border-top: 1px solid var(--border-muted); }
.editor-outline-head { font-size: 14px; }
.editor-outline-toggle {
  display: flex; align-items: center; gap: 6px; width: 100%; min-height: 40px; padding: 8px 8px 8px 16px;
  font: inherit; font-weight: 600; color: var(--fg); text-align: left; background: var(--bg-subtle); border: 0; cursor: pointer;
}
.editor-outline-toggle:hover { background: var(--bg-muted); }
.editor-outline-toggle .icon { color: var(--fg-muted); }
.editor-outline.is-open .editor-outline-toggle { border-bottom: 1px solid var(--border-muted); }
.editor-outline-body { flex: 1 1 auto; min-height: 0; overflow: auto; padding: 8px 8px 12px 12px; }
.editor-outline .tree-link { font-size: 13px; }
.editor-outline .tree-link .untitled { color: var(--fg-muted); font-style: italic; }
.editor-outline .tree-row[aria-current="location"] { background: var(--bg-muted); }
.editor-outline .tree-row[aria-current="location"]::before {
  content: ""; position: absolute; left: -6px; top: 6px; bottom: 6px; width: 4px; background: var(--accent); border-radius: 6px;
}
.editor-outline .tree-row[aria-current="location"] .tree-link { font-weight: 600; }

.editor-main { display: flex; flex: 1 1 0; flex-direction: column; min-width: 0; min-height: 0; container-type: inline-size; }
/* A narrow text column keeps its toolbar on one row with icons only. */
@container (max-width: 560px) {
  .editor-toolbar .hide-narrow, .editor-person-name { display: none; }
}
.editor-divider { position: relative; z-index: 2; flex: 0 0 7px; margin: 0 -3px; cursor: col-resize; touch-action: none; }
.editor-divider::after { content: ""; position: absolute; top: 0; bottom: 0; left: 3px; width: 1px; background: var(--border); }
.editor-divider:hover::after, .editor-divider:focus-visible::after, .editor-divider.is-dragging::after, .rv-files-split.is-resizing .editor-divider::after { left: 2px; width: 3px; background: var(--accent); }
.editor-divider:focus-visible { outline: none; }
.editor-pdf { display: flex; flex: 0 0 42%; min-width: 0; min-height: 0; }
.editor-shell.pdf-off .editor-divider:not(.editor-tree-divider), .editor-shell.pdf-off .editor-pdf { display: none; }
.editor-toolbar { flex-wrap: wrap; row-gap: 4px; }
.editor-files-btn, .editor-tree-close { display: none; }
/* The path takes the room that is left and shrinks first, so the toolbar
   stays one row on a phone. */
.editor-path { display: flex; flex: 1 1 0; align-items: center; gap: 6px; min-width: 0; font-family: var(--mono); font-size: 12px; }
.editor-path strong { font-weight: 600; }
.editor-path .Label { font-family: var(--font); }
.editor-note { font-size: 12px; color: var(--success); white-space: nowrap; opacity: 0; transition: opacity .2s ease; }
.editor-note.is-on { opacity: 1; }
.editor-status { display: inline-flex; align-items: center; gap: 6px; min-width: 0; font-size: 12px; color: var(--fg-muted); }
.editor-status .dot { background: var(--fg-subtle); }
.editor-status.is-ok .dot { background: var(--success-emph); }
.editor-status.is-pending .dot { background: var(--attention-emph); animation: pulse 1.2s ease-in-out infinite; }
.editor-status.is-offline { color: var(--attention); }
.editor-status.is-offline .dot { background: var(--attention-emph); }
.editor-status.is-error { color: var(--danger); }
.editor-status.is-error .dot { background: var(--danger-emph); }
@keyframes pulse { 50% { opacity: .3; } }
.editor-presence { display: flex; align-items: center; gap: 6px; }
.editor-person { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; }
.editor-person .avatar { box-shadow: 0 0 0 2px var(--bg-subtle); }
.editor-person-name { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.editor-banner {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 16px; font-size: 12px;
  background: var(--attention-bg); border-bottom: 1px solid var(--attention-border);
}
.editor-banner .icon { color: var(--attention); }
/* The formatting bar over a LaTeX file's text (editor-format.js). Its icons
   line up with the toolbar's text above. */
.editor-format { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; padding: 2px 8px 2px 10px; border-bottom: 1px solid var(--border-muted); }
.editor-format .editor-format-menu { width: auto; padding: 0 2px 0 6px; gap: 0; }
.editor-format .editor-format-menu .icon-triangle-down { width: 14px; height: 14px; }
.editor-format .dropdown-item code { margin-left: 16px; font-size: 11px; }
.editor-format-sep { align-self: stretch; width: 1px; margin: 6px 6px; background: var(--border-muted); }
.editor-format-keys { margin-left: auto; }
.shortcuts { columns: 2 260px; column-gap: 32px; }
.shortcuts section { break-inside: avoid; padding-bottom: 20px; }
.shortcuts h3 { margin-bottom: 8px; font-size: 14px; }
.shortcuts dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 12px; margin: 0; font-size: 13px; }
.shortcuts dt { display: flex; align-items: flex-start; gap: 3px; white-space: nowrap; }
.shortcuts dd { margin: 0; }
.editor-pane { position: relative; display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }
.editor-host { flex: 1 1 auto; min-height: 0; }
.editor-host .cm-editor { height: 100%; }
.editor-other { flex: 1 1 auto; min-height: 0; overflow: auto; }
.editor-message { display: flex; align-items: center; justify-content: center; min-height: 100%; padding: 16px; }
.editor-blob { display: flex; flex-direction: column; min-height: 100%; }
.editor-blob-head { display: flex; align-items: center; gap: 8px; padding: 8px 16px; font-size: 12px; border-bottom: 1px solid var(--border-muted); }
.editor-blob .blankslate { margin: auto; }
.editor-blob .image-preview { flex: 1 1 auto; }

/* The PDF pane (pages/editor-pdf.js). */
.pdf-pane { display: flex; flex: 1 1 auto; flex-direction: column; min-width: 0; min-height: 0; container-type: inline-size; }
/* A narrow PDF pane keeps the zoom menu and leaves out the steps and the page count. */
@container (max-width: 460px) {
  .pdf-zoom-step, .pdf-pages { display: none; }
}
.pdf-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px; row-gap: 4px;
  min-height: 48px; padding: 8px; background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
}
.pdf-split { display: inline-flex; margin-right: 4px; }
.pdf-split .pdf-recompile { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.pdf-split .pdf-recompile-more { margin-left: -1px; padding: 0 4px; border-top-left-radius: 0; border-bottom-left-radius: 0; }
.pdf-status { display: inline-flex; align-items: center; gap: 6px; min-width: 0; font-size: 12px; color: var(--fg-muted); }
.pdf-status-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pdf-status .dot { background: var(--fg-subtle); }
.pdf-status.is-ok .dot { background: var(--success-emph); }
.pdf-status.is-running .dot { background: var(--attention-emph); animation: pulse 1.2s ease-in-out infinite; }
.pdf-status.is-errors, .pdf-status.is-failed { color: var(--danger); }
.pdf-status.is-errors .dot, .pdf-status.is-failed .dot { background: var(--danger-emph); }
.pdf-zoom-step { font-size: 18px; font-weight: 500; line-height: 1; }
.pdf-zoom { padding: 0 6px; font-variant-numeric: tabular-nums; }
.pdf-pages { padding: 0 4px; font-size: 12px; color: var(--fg-muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.pdf-hide { display: none; }
.pdf-stale, .pdf-limit {
  display: flex; align-items: center; gap: 8px; padding: 6px 12px; font-size: 12px;
  background: var(--attention-bg); border-bottom: 1px solid var(--attention-border);
}
.pdf-stale .icon, .pdf-limit .icon { flex: 0 0 auto; color: var(--attention); }
.pdf-pages.is-over { color: var(--attention); font-weight: 600; }
.pdf-body { position: relative; flex: 1 1 auto; min-height: 0; }
.pdf-view { position: absolute; inset: 0; }
.pdf-message {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  padding: 16px; overflow: auto; background: var(--bg-muted);
}
.pdf-main-hint { max-width: 420px; margin: 24px auto 0; padding: 12px; font-size: 13px; text-align: left; }
.pdf-main-hint > .icon { margin-bottom: 0; }
.pdf-main-hint p { margin: 0 0 4px; max-width: none; }
.pdf-problems { flex: 0 0 auto; max-height: 40%; overflow: auto; background: var(--bg); border-top: 1px solid var(--border); }
.pdf-problems-head {
  position: sticky; top: 0; display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 8px 12px; font: inherit; font-size: 12px; text-align: left; color: var(--fg);
  background: var(--bg-subtle); border: 0; border-bottom: 1px solid var(--border-muted); cursor: pointer;
}
.pdf-problems-head .icon { color: var(--fg-muted); }
.pdf-problem-list { margin: 0; padding: 4px 0; list-style: none; }
.pdf-problem { display: flex; align-items: baseline; gap: 8px; padding: 4px 12px; font-size: 12px; }
.pdf-problem .icon { flex: none; align-self: center; }
.pdf-problem.is-error .icon { color: var(--danger); }
.pdf-problem.is-warning .icon, .pdf-problem.is-badbox .icon { color: var(--attention); }
.pdf-problem-where { flex: none; font-family: var(--mono); white-space: nowrap; }
.pdf-problem-message { min-width: 0; word-break: break-word; }

/* The PDF viewer (pdfview.js). */
.pdfview { height: 100%; overflow: auto; background: var(--bg-muted); outline: none; }
.pdfview-pages { display: flex; flex-direction: column; align-items: center; width: max-content; min-width: 100%; }
.pdfview-page { position: relative; flex: none; background: #fff; box-shadow: 0 0 0 1px #1f23281a, 0 1px 3px #1f23281f; }
.pdfview-page canvas { display: block; }
.pdfview-mark { position: absolute; background: #ffdf5d66; outline: 2px solid #d4a72c; border-radius: 2px; pointer-events: none; }
.pdfview-mark.is-fading { animation: pdfview-fade 4s ease-in forwards; }
/* The text over a page, for selecting it (pdfview.js with onSelect). PDF.js's
   own rules from its viewer (web/pdf_viewer.css): transparent text where the
   drawn one is, sized from --total-scale-factor on the page. */
.pdfview-page { --scale-round-x: 1px; --scale-round-y: 1px; }
.pdfview .textLayer {
  --min-font-size: 1;
  --text-scale-factor: calc(var(--total-scale-factor) * var(--min-font-size));
  --min-font-size-inv: calc(1 / var(--min-font-size));
  position: absolute; inset: 0; z-index: 0; overflow: clip; opacity: 1;
  line-height: 1; letter-spacing: normal; word-spacing: normal; text-align: initial;
  -webkit-text-size-adjust: none; text-size-adjust: none; forced-color-adjust: none;
  transform-origin: 0 0; caret-color: CanvasText;
}
.pdfview .textLayer :is(span, br) {
  position: absolute; color: transparent; white-space: pre; cursor: text; transform-origin: 0% 0%; user-select: text;
}
.pdfview .textLayer > :not(.markedContent), .pdfview .textLayer .markedContent span:not(.markedContent) {
  --font-height: 0;
  --scale-x: 1;
  --rotate: 0deg;
  z-index: 1;
  font-size: calc(var(--text-scale-factor) * var(--font-height));
  transform: rotate(var(--rotate)) scaleX(var(--scale-x)) scale(var(--min-font-size-inv));
}
.pdfview .textLayer .markedContent { display: contents; }
.pdfview .textLayer span[role="img"] { user-select: none; cursor: default; }
.pdfview .textLayer ::selection { color: transparent; background: #0969da40; }
.pdfview .textLayer br::selection { background: transparent; }
/* While the mouse selects, it covers the page, so its blank parts keep the selection going. */
.pdfview .textLayer .endOfContent { position: absolute; inset: 100% 0 0; z-index: 0; display: block; cursor: default; user-select: none; }
.pdfview .textLayer.selecting .endOfContent { top: 0; }
@keyframes pdfview-fade { 0%, 70% { opacity: 1; } 100% { opacity: 0; } }

/* --- Versions ------------------------------------------------------------ */

.release {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-muted);
}
.release:first-child { padding-top: 0; }
.release-meta { display: flex; flex-direction: column; gap: 8px; font-size: 12px; color: var(--fg-muted); padding-top: 16px; }
.release-meta .meta-line { display: flex; align-items: center; gap: 6px; min-width: 0; }
.release-meta .when { font-size: 14px; color: var(--fg); }
.release-card .box-body { padding: 16px; }
.release-card h2 { font-size: 24px; font-weight: 600; word-break: break-word; }
.release-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.release-head .actions { margin-left: auto; display: flex; gap: 4px; }
.release-note { margin-top: 12px; }
.assets { margin-top: 16px; }
.assets summary { font-weight: 600; font-size: 16px; cursor: pointer; display: flex; align-items: center; gap: 8px; list-style: none; }
.assets summary::-webkit-details-marker { display: none; }
.assets:not([open]) summary .icon { transform: rotate(-90deg); }
.assets .box { margin-top: 8px; }
.asset-row { display: flex; align-items: center; gap: 8px; padding: 8px 16px; border-top: 1px solid var(--border-muted); }
.asset-row:first-child { border-top: 0; }
.asset-row .icon { color: var(--fg-muted); }
.asset-row a { font-weight: 600; word-break: break-all; }
.asset-row .size { margin-left: auto; color: var(--fg-muted); font-size: 12px; white-space: nowrap; }
.release-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.release-pdf { margin-top: 16px; }
.pdf-box .box-header { gap: 4px; padding: 6px 8px 6px 16px; }
.pdf-box-body { position: relative; height: 72vh; min-height: 420px; }
.pdf-box-body .pdfview { border-bottom-left-radius: var(--radius); border-bottom-right-radius: var(--radius); }
.pdf-zoom-text { min-width: 40px; font-size: 12px; text-align: center; color: var(--fg-muted); font-variant-numeric: tabular-nums; }

.range-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding: 12px; margin-bottom: 16px;
  background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius);
}
.range-bar .form-select { min-width: 0; max-width: 260px; }
.range-bar .arrow { color: var(--fg-muted); }

/* --- Diffs --------------------------------------------------------------- */

.diff-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-bottom: 16px; }
.diff-stat-add { color: var(--success); font-weight: 600; }
.diff-stat-del { color: var(--danger); font-weight: 600; }
.diff-file { margin-bottom: 16px; }
.diff-file > .box-header {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 6px 8px;
  font-size: 12px;
  font-family: var(--mono);
}
.diff-file > .box-header .path { font-weight: 600; color: var(--fg); word-break: break-all; }
.diff-file > .box-header .Label { font-family: var(--font); }
.diff-file.collapsed > .box-header { border-radius: var(--radius); }
.diff-file.collapsed .diff-body { display: none; }
.diff-body { overflow-x: auto; }
.diff-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 12px; line-height: 20px; }
.diff-table td { padding: 0 10px; vertical-align: top; }
.diff-table .num {
  width: 1%;
  min-width: 44px;
  color: var(--fg-subtle);
  text-align: right;
  user-select: none;
  white-space: nowrap;
}
.diff-table .num::before { content: attr(data-n); }
.diff-table .code { white-space: pre-wrap; word-break: break-word; }
.diff-table .code::before { display: inline-block; width: 1.4em; margin-left: -1.4em; color: var(--fg-muted); }
.diff-table .code { padding-left: 2em; }
.diff-table tr.add .code::before { content: "+"; }
.diff-table tr.del .code::before { content: "-"; }
.diff-table tr.add td { background: var(--diff-add-bg); }
.diff-table tr.add td.num { background: var(--diff-add-num); color: var(--fg); }
.diff-table tr.del td { background: var(--diff-del-bg); }
.diff-table tr.del td.num { background: var(--diff-del-num); color: var(--fg); }
.diff-table tr.hunk td { background: var(--diff-hunk-bg); color: var(--fg-muted); padding-top: 4px; padding-bottom: 4px; }
.diff-table tr.hunk td.num { background: #b6e3ff; }
.diff-table tr.note td { color: var(--fg-muted); font-style: italic; }
.diff-table tr.mixed td { background: #fffbe6; }
.diff-table ins { text-decoration: none; background: var(--diff-add-word); border-radius: 2px; }
.diff-table del { text-decoration: line-through; text-decoration-color: #d1242f99; background: var(--diff-del-word); border-radius: 2px; }
.diff-empty { padding: 16px; color: var(--fg-muted); text-align: center; }
.diff-filelist { list-style: none; margin: 0; padding: 0; }

/* --- History ------------------------------------------------------------- */

.commit-group { position: relative; padding-left: 28px; margin-bottom: 8px; }
.commit-group::before {
  content: "";
  position: absolute;
  left: 7px; top: 0; bottom: 0;
  width: 2px;
  background: var(--border-muted);
}
.commit-group-title {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  color: var(--fg-muted);
  font-size: 14px;
}
.commit-group-title .icon {
  position: absolute;
  left: -28px;
  background: var(--bg);
  color: var(--fg-muted);
}
.commit-group .box { margin-bottom: 16px; }
.commit-row { display: flex; gap: 12px; align-items: flex-start; }
.commit-row .commit-main { flex: 1 1 auto; min-width: 0; }
.commit-message { font-weight: 600; color: var(--fg); word-break: break-word; }
.commit-message:hover { color: var(--accent); }
.commit-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; margin-top: 4px; color: var(--fg-muted); font-size: 12px; }
.commit-meta strong { color: var(--fg); font-weight: 600; }
.commit-side { flex: none; display: flex; align-items: center; gap: 4px; }
.sha-btn { font-family: var(--mono); font-size: 12px; }

/* --- Settings ------------------------------------------------------------ */

.settings-section { margin-bottom: 40px; }
.danger-row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.danger-row > div { flex: 1 1 280px; min-width: 0; }
.danger-row h4 { margin-bottom: 2px; }
.danger-row p { margin: 0; color: var(--fg-muted); }
.member-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.member-row .who { flex: 1 1 200px; min-width: 0; }
.member-row .who .name { font-weight: 600; }
.member-row .who .email { color: var(--fg-muted); font-size: 12px; }
.member-row .form-select { width: auto; }
.label-editor { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 4px 6px; min-height: 32px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); }
.label-editor:focus-within { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.label-editor input { flex: 1 1 120px; min-width: 80px; border: 0; outline: 0; padding: 2px 4px; font: inherit; background: transparent; }
.label-editor .topic { gap: 4px; padding-right: 4px; }
.label-editor .topic button {
  display: inline-flex; padding: 0; width: 16px; height: 16px; align-items: center; justify-content: center;
  border: 0; border-radius: 50%; background: none; color: inherit; cursor: pointer;
}
.label-editor .topic button:hover { background: #0969da26; }
.name-preview {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 12px 16px; background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius);
}
.name-preview .name { font-family: var(--mono); font-size: 14px; font-weight: 600; word-break: break-all; }
.token-field { font-family: var(--mono); }

/* --- Login --------------------------------------------------------------- */

.login-body { background: var(--bg-subtle); min-height: 100vh; }
.login-wrap { width: 340px; max-width: calc(100vw - 32px); margin: 0 auto; padding: 32px 0 48px; }
.login-logo { display: block; width: 64px; height: 64px; margin: 8px auto 16px; }
.login-wrap h1 { font-size: 24px; font-weight: 300; text-align: center; letter-spacing: -.5px; margin-bottom: 16px; }
.login-box { padding: 16px; background: var(--bg); border: 1px solid var(--border-muted); border-radius: var(--radius); }
.login-box .form-control { width: 100%; margin-bottom: 16px; }
.login-box .code-input { font-family: var(--mono); font-size: 20px; letter-spacing: 6px; text-transform: uppercase; text-align: center; height: 44px; }
.login-lede { color: var(--fg-muted); margin-bottom: 16px; }
.login-alt { margin-top: 16px; padding: 16px; text-align: center; border: 1px solid var(--border); border-radius: var(--radius); }
.login-links { display: flex; justify-content: space-between; gap: 8px; margin-top: 12px; font-size: 12px; }
.login-footer { margin-top: 32px; text-align: center; font-size: 12px; color: var(--fg-muted); }
.login-message:empty { display: none; }
.login-message { margin-bottom: 16px; }

/* --- Misc ---------------------------------------------------------------- */

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--fg-muted);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  vertical-align: text-bottom;
}
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading { display: flex; justify-content: center; padding: 48px 16px; }

kbd {
  display: inline-block;
  padding: 0 4px;
  font-size: 11px;
  line-height: 18px;
  color: var(--fg);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 -1px 0 var(--border);
}

/* --- Narrow screens ------------------------------------------------------ */

@media (max-width: 1011px) {
  .container { padding-left: 24px; padding-right: 24px; }
  .editor-tree { flex-basis: var(--tree-width, 232px); }
  .layout-sidebar { grid-template-columns: 240px minmax(0, 1fr); gap: 24px; }
  .layout-repo { grid-template-columns: minmax(0, 1fr) 240px; }
  .date-row { grid-template-columns: 1fr 1fr 1fr; padding: 12px; border: 1px solid var(--border-muted); border-radius: var(--radius); }
  .date-row .date-remove { justify-self: end; }
  .date-row.compact { padding: 0; border: 0; }
}

@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .layout-sidebar, .layout-repo, .layout-settings { grid-template-columns: minmax(0, 1fr); }
  /* A paper's name is only up here, so it stays and the logo's word goes. The
     Check out menu spans the header instead of running off the left edge. */
  .app-header-inner { position: relative; }
  .app-header-inner:has(.header-crumbs a) .brand-word { display: none; }
  .checkout-menu { position: static; }
  .checkout-menu .dropdown-menu { left: 16px; right: 16px; width: auto; max-width: none; }
  .project-row { position: relative; flex-direction: column; gap: 8px; }
  .project-main { padding-right: 32px; }
  .project-menu { position: absolute; top: 20px; right: 8px; margin: 0; }
  .project-side { width: auto; align-items: flex-start; text-align: left; flex-direction: row; flex-wrap: wrap; }
  .next-date { align-items: flex-start; }
  .release { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .release-meta { flex-direction: row; flex-wrap: wrap; padding-top: 0; gap: 4px 12px; }
  .header-search { display: none; }
  .hide-sm { display: none !important; }
  .timeline-item { padding: 12px; }
  .timeline-side { align-self: flex-start; }
  .subhead { flex-wrap: wrap; }
  .folders-details:not([open]) { margin-bottom: 0; }
  .editor-tree { display: none; flex: 1 1 auto; max-width: none; }
  .editor-shell.show-tree .editor-tree { display: flex; }
  .editor-divider, .editor-pdf { display: none; }
  .editor-shell.show-pdf .editor-pdf { display: flex; flex: 1 1 auto; }
  .editor-shell.show-tree .editor-main, .editor-shell.show-tree .editor-pdf, .editor-shell.show-pdf .editor-main { display: none; }
  .pdf-hide { display: inline-flex; order: -1; }
  .editor-files-btn, .editor-tree-close { display: inline-flex; }
  .editor-tree-head, .editor-toolbar, .editor-outline-toggle { padding-left: 12px; }
  .editor-format { padding-left: 6px; }
  .editor-person-name { display: none; }
  .editor-status { order: 1; }
  .editor-status.is-ok .editor-status-text {
    position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap;
  }
}

@media (max-width: 543px) {
  .app-header-inner { min-height: 56px; padding: 0 12px; gap: 8px; }
  .date-row { grid-template-columns: 1fr 1fr; }
  .date-row .date-kind, .date-row .date-label { grid-column: 1 / -1; }
  .timeline-item { flex-wrap: wrap; }
  .timeline-badge { display: none; }
  .timeline-side { width: 100%; padding-left: 0; }
  .timeline-side .countdown { margin-right: auto; }
  .date-row.compact { grid-template-columns: 1fr 1fr; }
  .date-row.compact .date-tz { grid-column: 1 / -1; }
  .diff-table .num { min-width: 32px; padding: 0 4px; }
  .commit-row { flex-wrap: wrap; }
  .commit-row .commit-main { flex-basis: 100%; }
  .code-table .ln { min-width: 32px; padding: 0 6px; }
  .page-head h1, .page-head h2, .subhead h2 { font-size: 20px; }
  .box-header { padding: 12px; }
  .box-row { padding: 12px; }
}

/* --- Reviews ------------------------------------------------------------- */

/* pages/reviews.js, review.js, review-files.js and threads.js. GitHub's pull
   request list, its review header and tabs, and its review comments. */
.rv-section-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 24px 0 8px; }
.rv-section-head h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.rv-section-lede { margin-bottom: 12px; }
.rv-thread-list { display: flex; flex-direction: column; gap: 16px; }

.rv-review-row { display: flex; gap: 12px; align-items: flex-start; }
.rv-review-icon { padding-top: 3px; }
.rv-review-title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.rv-review-title a { color: var(--fg); font-size: 16px; }
.rv-review-title a:hover { color: var(--accent); }
.rv-review-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; margin-top: 4px; }
.rv-review-summary { margin: 6px 0 0; overflow: hidden; color: var(--fg-muted); text-overflow: ellipsis; white-space: nowrap; }
.rv-review-counts { display: flex; flex: none; flex-direction: column; align-items: flex-end; gap: 2px; color: var(--fg-muted); }
.rv-review-counts:hover { text-decoration: none; }
.rv-review-counts span { display: inline-flex; align-items: center; gap: 4px; }
.rv-request-actions { display: flex; flex: none; align-items: center; gap: 8px; }
/* The person to ask for a review. .choice span would grey the initials. */
.rv-person-choice .avatar { margin-top: 1px; color: #fff; font-size: 10px; }

.rv-head { padding-bottom: 16px; }
.rv-head-top { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 8px 16px; }
.rv-title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 24px; font-weight: 400; }
.rv-head-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; margin-top: 8px; }
.rv-head-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.rv-counts { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 8px; color: var(--fg-muted); }
.rv-counts span { display: inline-flex; align-items: center; gap: 4px; }
.rv-tabnav {
  display: flex; overflow-x: auto; scrollbar-width: none;
  margin-bottom: 16px; border-bottom: 1px solid var(--border);
}
.rv-tabnav::-webkit-scrollbar { display: none; }
.rv-tab {
  display: inline-flex; align-items: center; gap: 8px; flex: none;
  padding: 8px 16px; margin-bottom: -1px;
  color: var(--fg-muted); white-space: nowrap;
  border: 1px solid transparent; border-radius: var(--radius) var(--radius) 0 0;
}
.rv-tab:hover { color: var(--fg); text-decoration: none; }
.rv-tab .icon { color: var(--fg-muted); }
.rv-tab[aria-current="page"] { color: var(--fg); font-weight: 600; background: var(--bg); border-color: var(--border); border-bottom-color: var(--bg); }

.rv-summary { margin-bottom: 8px; }
.rv-summary-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  padding: 8px 16px; background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-muted); border-radius: var(--radius) var(--radius) 0 0;
}
.rv-summary.is-approve { border-color: var(--success-border); }
.rv-summary.is-changes_requested { border-color: var(--danger-border); }
.rv-summary-body { padding: 16px; }

/* A thread. */
.rv-thread { scroll-margin-top: 16px; }
.rv-thread.is-target { border-color: var(--attention-emph); box-shadow: 0 0 0 1px var(--attention-emph); }
.rv-thread.is-selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.rv-thread-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px;
  padding: 6px 12px 6px 6px; font-size: 12px;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
  border-radius: var(--radius) var(--radius) 0 0;
}
.rv-thread.is-collapsed .rv-thread-head { border-bottom: 0; border-radius: var(--radius); }
.rv-thread-toggle { width: 24px; height: 24px; }
.rv-where { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 8px; min-width: 0; }
.rv-path { font-family: var(--mono); font-weight: 600; color: var(--fg); word-break: break-all; }
a.rv-path:hover { color: var(--accent); }
.rv-lines { color: var(--fg-muted); white-space: nowrap; }
.rv-labels { display: flex; flex-wrap: wrap; gap: 4px; }
.rv-labels .Label { line-height: 16px; }

.rv-snippet { max-height: 280px; overflow: auto; border-bottom: 1px solid var(--border-muted); }
.rv-snippet .code-table tr.is-span td { background: #fff8c54d; }
.rv-snippet .code-table tr:is(.is-span, .is-marked) td.ln { color: var(--fg-muted); box-shadow: inset -2px 0 0 var(--attention-emph); }
.rv-snippet.is-outdated .lc { color: var(--fg-muted); }
.rv-snippet-loading { display: flex; justify-content: center; padding: 12px; }
.rv-hl { color: inherit; background: #ffe58f99; border-radius: 2px; box-shadow: 0 1px 0 #d4a72c; }
.rv-snippet-note {
  display: flex; align-items: center; gap: 6px; padding: 8px 16px; font-size: 12px;
  color: var(--attention); background: var(--attention-bg); border-bottom: 1px solid var(--border-muted);
}
.rv-original { border-bottom: 1px solid var(--border-muted); }
.rv-original > summary { padding: 6px 16px; font-size: 12px; color: var(--fg-muted); cursor: pointer; }
.rv-original[open] > summary { border-bottom: 1px solid var(--border-muted); }

.rv-timeline { padding: 0 16px; }
.rv-comment { display: flex; gap: 12px; padding: 16px 0; border-top: 1px solid var(--border-muted); }
.rv-comment-main { flex: 1 1 auto; min-width: 0; }
.rv-comment-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; min-height: 28px; }
.rv-comment-body { margin-top: 2px; }
.rv-event { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-top: 1px solid var(--border-muted); }
.rv-comment:first-child, .rv-event:first-child { border-top: 0; }
.rv-event-badge {
  display: inline-flex; flex: none; align-items: center; justify-content: center;
  width: 24px; height: 24px; margin: 0 4px;
  color: var(--fg-muted); background: var(--bg-muted); border-radius: 50%;
}
.rv-event.is-resolved .rv-event-badge { color: #fff; background: var(--done); }
.rv-event.is-accepted .rv-event-badge { color: #fff; background: var(--success-emph); }
.rv-event.is-reopened .rv-event-badge { color: #fff; background: var(--accent-emph); }
.rv-event-main { flex: 1 1 auto; min-width: 0; padding-top: 2px; }
.rv-event-note { margin-top: 6px; padding: 8px 12px; background: var(--bg-subtle); border-radius: var(--radius); }

.rv-suggestion { margin-top: 8px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); }
.rv-suggestion-head {
  display: flex; align-items: center; gap: 6px; min-height: 36px;
  padding: 4px 4px 4px 12px; font-size: 12px; font-weight: 600;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
}
.rv-suggestion-same { padding: 8px 12px; font-size: 12px; color: var(--fg-muted); }
.rv-diff { overflow-x: auto; }
.rv-diff .diff-table tr:first-child td { padding-top: 4px; }
.rv-diff .diff-table tr:last-child td { padding-bottom: 4px; }
.rv-diff .diff-table del { text-decoration: none; }

.rv-resolution { margin: 0 16px 16px; overflow: hidden; border: 1px solid #8250df4d; border-radius: var(--radius); }
.rv-resolution-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  padding: 8px 12px; font-size: 12px; background: var(--done-bg); border-bottom: 1px solid #8250df33;
}
.rv-resolution-empty { padding: 8px 12px; font-size: 12px; color: var(--fg-muted); }

.rv-thread-foot {
  padding: 12px 16px; background: var(--bg-subtle);
  border-top: 1px solid var(--border-muted); border-radius: 0 0 var(--radius) var(--radius);
}
.rv-reply { display: flex; align-items: flex-start; gap: 12px; }
.rv-reply .rv-form { flex: 1 1 auto; min-width: 0; }
.rv-reply-fake { flex: 1 1 auto; text-align: left; color: var(--fg-subtle); cursor: text; }
.rv-thread-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.rv-thread-actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* The comment box. */
.rv-form { display: flex; flex-direction: column; gap: 8px; }
textarea.rv-textarea { min-height: 72px; }
.rv-suggest { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); }
.rv-suggest-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  padding: 6px 12px; font-size: 12px; font-weight: 600;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
}
.rv-suggest textarea.form-control { min-height: 60px; border: 0; border-radius: 0; box-shadow: none; }
.rv-form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

/* @-mentions (mentions.js): the list at the @, like GitHub's suggester, and a
   mention in a rendered comment. */
.mention-pop {
  position: fixed;
  inset: auto;
  width: max-content;
  min-width: 200px;
  max-width: min(360px, calc(100vw - 16px));
  max-height: 280px;
  margin: 0;
  padding: 4px 0;
  overflow-y: auto;
  color: var(--fg);
  background: var(--bg);
  border: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-overlay);
}
.mention-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px; font-size: 14px; cursor: pointer; white-space: nowrap;
}
.mention-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; }
.mention-email { min-width: 0; overflow: hidden; text-overflow: ellipsis; font-size: 12px; color: var(--fg-muted); }
.mention-item[aria-selected="true"] { color: var(--fg-on-emphasis); background: var(--accent-emph); }
.mention-item[aria-selected="true"] .mention-email { color: inherit; }
.mention { font-weight: 600; white-space: nowrap; }
.rv-compose { margin: 4px 0; }
.rv-compose-head {
  display: flex; align-items: center; gap: 6px; padding: 8px 12px; font-size: 12px;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted); border-radius: var(--radius) var(--radius) 0 0;
}
.rv-compose-body { padding: 12px; }
.rv-compose-quote {
  max-height: 120px; overflow: auto; margin: 0 0 8px; padding: 4px 12px;
  font-family: var(--mono); font-size: 12px; white-space: pre-wrap; color: var(--fg-muted);
  background: var(--attention-bg); border-left: 3px solid var(--attention-emph);
}

/* The Files view of a review fills the window below the review's header, like
   the editor: the source and the PDF side by side, each scrolling on its own.
   review-files.js sets the height and the PDF's width. On a phone the PDF goes
   above the source and the page scrolls. */
.rv-files-head { padding-top: 24px; border-bottom: 1px solid var(--border); }
.rv-files-head .rv-tabnav { margin-bottom: -1px; border-bottom: 0; }
.rv-files-split { display: flex; height: 560px; min-height: 320px; border-bottom: 1px solid var(--border); }
.rv-files-split.is-resizing { cursor: col-resize; user-select: none; }
.rv-files-split.is-resizing .rv-pdf-col { pointer-events: none; }
.rv-files-split:not(.has-pdf) .rv-pdf-hint, .rv-files-split:not(.has-pdf) .rv-divider { display: none; }
.rv-code-col { display: flex; flex: 1 1 0; flex-direction: column; min-width: 0; min-height: 0; }
.rv-files-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px; row-gap: 4px;
  min-height: 48px; padding: 8px 8px 8px 16px; background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
}
.rv-file-select { min-width: 0; max-width: 100%; }
.rv-code-scroll { position: relative; flex: 1 1 auto; min-height: 0; overflow: auto; }
.rv-code-notes { padding: 12px 16px 0; }
.rv-files-hint { margin-bottom: 4px; }
.rv-code-notes > .flash { margin-bottom: 12px; }
.rv-view > .flash { margin-bottom: 16px; }
.rv-pdf-col { position: relative; display: flex; flex: 0 0 46%; flex-direction: column; min-width: 0; min-height: 0; }
.rv-pdf-col > .box { display: flex; flex: 1 1 auto; flex-direction: column; min-height: 0; border: 0; border-radius: 0; }
.rv-pdf-col > .box > .box-header { min-height: 48px; border-radius: 0; }
.rv-pdf-col .pdf-box-body { flex: 1 1 auto; height: auto; min-height: 0; }
.rv-pdf-col .pdf-box-body .pdfview { border-radius: 0; }
.rv-pdf-message .blankslate { margin: auto 0; padding: 48px 16px; }
.rv-code-table td.rv-ln { cursor: pointer; }
.rv-code-table td.rv-ln:hover { color: var(--accent); text-decoration: underline; }
.rv-code-table tr.has-thread td.ln { box-shadow: inset -2px 0 0 var(--attention-emph); }
.rv-code-table tr.is-chosen td { background: var(--attention-bg); }
.rv-code-table tr.is-flash td { background: var(--accent-bg); }
.rv-mark { color: inherit; background: #fff8c5; border-bottom: 2px solid #d4a72c; cursor: pointer; }
.rv-mark.is-multi { background: #ffe58f; }
.rv-code-table .rv-thread-row > td, .rv-code-table .rv-compose-row > td {
  padding: 8px 10px; font-family: var(--font); font-size: 14px; line-height: 1.5; white-space: normal;
  background: var(--bg-subtle); border-top: 1px solid var(--border-muted); border-bottom: 1px solid var(--border-muted);
}
.rv-code-table .rv-thread-row .diff-table td { padding-top: 0; padding-bottom: 0; }
.rv-code-loading { padding: 24px !important; text-align: center; }
.rv-float, .rv-pdf-float { position: absolute; z-index: 5; box-shadow: var(--shadow-overlay); }
/* Text selected in the PDF, where it is in the source. */
.rv-pick { background: #c8e1ff; border-radius: 2px; box-shadow: 0 1px 0 #54aeff; }
.rv-code-table tr.is-picked td { background: #ddf4ff; }
.rv-code-table tr.is-picked td.ln { box-shadow: inset -2px 0 0 var(--accent); }

/* LaTeX's colours in a review's source, the editor's (editorLooks in pages/editor.js). */
.tex-comment { color: #6e7781; font-style: italic; }
.tex-command { color: #0550ae; }
.tex-atom { color: #953800; }
.tex-keyword { color: #116329; }
.tex-bracket { color: #59636e; }
.tex-string { color: #0a3069; }
.tex-invalid { color: #d1242f; }

@media (max-width: 767px) {
  .rv-files-split { flex-direction: column; min-height: 0; }
  .rv-code-col { flex: none; }
  .rv-code-scroll { overflow: visible; }
  .rv-pdf-col { flex-basis: auto !important; order: -1; border-bottom: 1px solid var(--border); }
  .rv-pdf-col .pdf-box-body { flex: none; height: 70vh; min-height: 320px; }
}

@media (max-width: 767px) {
  .rv-review-row { flex-wrap: wrap; }
  .rv-review-counts { flex-direction: row; flex-wrap: wrap; flex-basis: 100%; gap: 12px; padding-left: 28px; }
  .rv-request-actions:not(:empty) { flex-basis: 100%; padding-left: 28px; }
  .rv-review-summary { white-space: normal; }
  .rv-head-actions { margin-left: 0; }
  .rv-title { font-size: 20px; }
  .rv-tab { padding: 8px 12px; }
  .rv-timeline { padding: 0 12px; }
  .rv-comment { gap: 8px; }
  .rv-reply > .avatar { display: none; }
  .rv-thread-foot { padding: 12px; }
  .rv-resolution { margin: 0 12px 12px; }
}

/* Comments in the editor (editor-comments.js). The panel takes the PDF's column. */
.editor-comments { display: none; flex: 1 1 auto; flex-direction: column; min-width: 0; min-height: 0; background: var(--bg); }
.editor-shell.show-comments .editor-comments { display: flex; }
.editor-shell.show-comments .pdf-pane { display: none; }
.editor-comments-head {
  display: flex; align-items: center; gap: 8px; min-height: 48px; padding: 8px 8px 8px 16px;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border-muted);
}
.editor-comments-head h2 { font-size: 14px; }
.editor-comments-body { display: flex; flex: 1 1 auto; flex-direction: column; gap: 12px; min-height: 0; overflow: auto; padding: 12px; }
.editor-comments-list { display: flex; flex-direction: column; gap: 12px; }
.editor-comments-list .rv-timeline { padding: 0 12px; }
.editor-comments-list .rv-thread-foot { padding: 12px; }
.editor-comments-list .rv-resolution { margin: 0 12px 12px; }
.editor-comments-list .rv-comment { gap: 8px; }
.editor-comments-empty { margin: 4px; font-size: 12px; color: var(--fg-muted); }
.editor-comments-more > summary { padding: 4px; font-size: 12px; color: var(--fg-muted); cursor: pointer; }
.editor-comments-more[open] > summary { margin-bottom: 8px; }
.editor-comments-more > .rv-thread + .rv-thread { margin-top: 8px; }
.editor-comments-others h3 { margin: 4px 0; font-size: 12px; color: var(--fg-muted); }
.editor-comments-others ul { margin: 0; padding-left: 16px; font-size: 12px; }
.editor-compose { margin: 0; }
.editor-host { position: relative; }
.editor-comment-float { position: absolute; z-index: 6; box-shadow: var(--shadow-overlay); }
.cm-rv-thread { background-color: #fff8c5; border-bottom: 2px solid #d4a72c; }
.cm-rv-thread.is-resolved { background-color: #f6efff; border-bottom-color: #c297ff; }
.cm-rv-thread.is-pending { border-bottom-style: dashed; }
.cm-rv-thread.is-selected { background-color: #ffe58f; }

/* The last compile's problems in the editor's text (editor-problems.js): the
   gutter's icon and a light line, without CodeMirror's wavy underline.
   Comment highlights sit on top and stay visible. */
.editor-host .cm-editor .cm-lintRange-error, .editor-host .cm-editor .cm-lintRange-warning { background-image: none; }
.editor-host .cm-editor .cm-problemLine.is-error { background-color: #ffebe9b3; }
.editor-host .cm-editor .cm-problemLine.is-warning { background-color: #fff1e5b3; }
.editor-host .cm-editor .cm-gutter-lint .cm-gutterElement { padding: 2px 0 0 4px; }
.editor-host .cm-editor .cm-tooltip-lint { padding: 0; font-family: var(--font); font-size: 12px; }
.editor-host .cm-editor .cm-diagnostic { padding: 6px 10px; }

/* The place a click in the PDF points at (editor-spot.js): the line and
   the word light up in the accent's blue and fade out. */
.editor-host .cm-editor .cm-syncLine { animation: sync-line 3s ease-out forwards; }
.editor-host .cm-editor .cm-syncWord { border-radius: 2px; animation: sync-word 3s ease-out forwards; }
@keyframes sync-line { 0%, 50% { background-color: #ddf4ffcc; } 100% { background-color: transparent; } }
@keyframes sync-word { 0%, 60% { background-color: #54aeff66; box-shadow: 0 0 0 1px #54aeff; } 100% { background-color: transparent; box-shadow: none; } }

/* Spelling and grammar in the editor's text (editor-grammar.js). Red for
   spelling, amber for grammar and a dotted blue for style, the colours every
   checker has taught people to read. The words whose suggestions are up get
   a light blue, so the box visibly belongs to them. */
.editor-host .cm-editor .cm-grammar {
  text-decoration-line: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-skip-ink: none;
}
.editor-host .cm-editor .cm-grammar-spelling { text-decoration-style: wavy; text-decoration-color: var(--danger); }
.editor-host .cm-editor .cm-grammar-grammar { text-decoration-style: wavy; text-decoration-color: var(--attention-emph); }
.editor-host .cm-editor .cm-grammar-style { text-decoration-style: dotted; text-decoration-thickness: 2px; text-decoration-color: var(--accent); }
.editor-host .cm-editor .cm-grammar.is-active { background-color: var(--accent-bg); border-radius: 2px; }
/* The suggestions for one underline, under it in the editor's host, like
   CodeMirror's own tooltips (editorLooks() in pages/editor.js). */
.grammar-box {
  position: absolute; z-index: 7; width: max-content; max-width: min(360px, calc(100% - 16px));
  font-size: 13px; line-height: 20px; color: var(--fg); background: var(--bg);
  border-radius: 8px; box-shadow: var(--shadow-overlay);
}
.grammar-box-body { padding: 8px 12px 10px; }
.grammar-box-kind { display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--fg-muted); }
.grammar-box-kind::before { content: ""; flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.grammar-box-kind.is-grammar::before { background: var(--attention-emph); }
.grammar-box-kind.is-style::before { background: var(--accent); }
.grammar-box-msg { margin: 2px 0 0; }
.grammar-box-sugs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.grammar-sug {
  height: 26px; padding: 0 10px; font: inherit; font-weight: 600; color: var(--accent);
  background: var(--accent-bg); border: 1px solid transparent; border-radius: var(--radius); cursor: pointer;
}
.grammar-sug:hover { border-color: var(--accent-border); }
.grammar-sug em { font-weight: 400; }
.grammar-box-acts { display: flex; flex-wrap: wrap; gap: 2px; padding: 4px 6px; border-top: 1px solid var(--border-muted); }
.grammar-act {
  height: 24px; padding: 0 6px; font: inherit; font-size: 12px; color: var(--fg-muted);
  background: none; border: 0; border-radius: var(--radius); cursor: pointer;
}
.grammar-act:hover { color: var(--fg); background: var(--bg-muted); }
/* The Spellcheck button with the checker: the count of underlines in the
   open file, dimmed while a check is out rather than relabelled, since most
   answer in a fraction of a second. Amber when the checker failed. */
.editor-spell-btn .counter { transition: opacity .15s ease; }
.editor-spell-btn.is-busy .counter { opacity: .55; }
.editor-spell-btn.is-failed .icon { color: var(--attention); }
/* The dictionary and the rules turned off, on the Settings page (pages/account.js). */
.grammar-lists-head { margin: 32px 0 8px; font-size: 16px; font-weight: 600; }
.grammar-row { min-height: 45px; }

/* --- References ---------------------------------------------------------- */

/* pages/references.js, the References tab (docs/DESIGN.md §16). GitHub's
   issue list: a row per .bib entry that opens to its findings, the record
   next to the entry and the claims. */
.rf-subhead { flex-wrap: wrap; }
.rf-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.rf-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin: -4px 0 16px; }
.rf-counts { display: flex; flex-wrap: wrap; gap: 6px; }
.rf-run { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.rf-run .icon { color: var(--fg-muted); }
.rf-run .icon.color-danger { color: var(--danger); }
.rf-progress { display: inline-block; width: 160px; max-width: 40vw; height: 8px; overflow: hidden; background: var(--bg-muted); border-radius: 4px; }
.rf-progress > span { display: block; height: 100%; background: var(--success-emph); transition: width .3s ease; }
.rf-notes { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.rf-filter-bar { align-items: center; margin-bottom: 16px; border-bottom: 0; padding-bottom: 0; }
.rf-filter { flex-wrap: wrap; max-width: 100%; }
.rf-filter-count { color: var(--fg-muted); font-weight: 400; }

.rf-entry.box-row { padding: 0; }
.rf-toggle {
  display: flex; align-items: flex-start; gap: 12px; width: 100%; padding: 12px 16px;
  color: inherit; text-align: left; background: none; border: 0; border-radius: 0; cursor: pointer;
}
.rf-toggle:hover { background: var(--bg-subtle); }
.rf-entry:first-child .rf-toggle { border-top-left-radius: var(--radius); border-top-right-radius: var(--radius); }
.rf-entry:last-child:not(.is-open) .rf-toggle { border-bottom-left-radius: var(--radius); border-bottom-right-radius: var(--radius); }
.rf-status { flex: none; width: 84px; padding-top: 1px; }
.rf-main { display: flex; flex: 1 1 auto; flex-direction: column; gap: 2px; min-width: 0; }
.rf-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 8px; min-width: 0; }
.rf-key { font-family: var(--mono); font-size: 12px; color: var(--fg); word-break: break-all; }
.rf-title { font-weight: 600; min-width: 0; }
.rf-sub { overflow-wrap: anywhere; }
.rf-count { display: inline-flex; flex: none; align-items: center; gap: 4px; padding-top: 2px; font-size: 12px; color: var(--fg-muted); }
.rf-count.is-error .icon { color: var(--danger); }
.rf-count.is-warning .icon { color: var(--attention); }
.rf-chevron { flex: none; margin-top: 2px; color: var(--fg-muted); transition: transform .15s ease; }
.rf-entry.is-open .rf-chevron { transform: rotate(90deg); }
.rf-entry.is-open .rf-toggle { background: var(--bg-subtle); }
.rf-detail { display: flex; flex-direction: column; gap: 12px; padding: 4px 16px 16px 112px; }
.rf-none { margin: 0; }

.rf-findings, .rf-claim-list { margin: 0; padding: 0; list-style: none; border: 1px solid var(--border-muted); border-radius: var(--radius); }
.rf-finding { display: flex; gap: 8px; padding: 8px 12px; }
.rf-finding + .rf-finding, .rf-claim + .rf-claim { border-top: 1px solid var(--border-muted); }
.rf-finding > .icon { flex: none; margin-top: 2px; color: var(--fg-muted); }
.rf-finding.is-error > .icon { color: var(--danger); }
.rf-finding.is-warning > .icon { color: var(--attention); }
.rf-finding-body { flex: 1 1 auto; min-width: 0; }
.rf-finding-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; margin-top: 2px; font-size: 12px; color: var(--fg-muted); }
.rf-take { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-top: 6px; }
.rf-value { max-width: 100%; white-space: pre-wrap; word-break: break-word; background: var(--bg-muted); }

.rf-compare-box { border: 1px solid var(--border-muted); border-radius: var(--radius); overflow: hidden; }
.rf-compare-scroll { overflow-x: auto; }
.rf-compare { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 12px; }
.rf-compare th, .rf-compare td { padding: 6px 12px; text-align: left; vertical-align: top; border-top: 1px solid var(--border-muted); }
.rf-compare thead th { background: var(--bg-subtle); border-top: 0; font-weight: 600; }
.rf-compare th:first-child { width: 84px; }
.rf-compare tbody th { font-weight: 400; color: var(--fg-muted); }
.rf-compare td { overflow-wrap: anywhere; }
.rf-compare tr.is-differs td { background: var(--attention-bg); }
.rf-compare thead a { color: var(--fg-muted); }

.rf-claims-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 8px; font-size: 14px; }
.rf-claim { padding: 8px 12px; }
.rf-claim-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.rf-quote { margin: 6px 0; padding: 0 0 0 10px; border-left: 3px solid var(--border); overflow-wrap: anywhere; }
.rf-quote-source { color: var(--fg-muted); }
.rf-claim-reason { margin: 4px 0 0; }
.rf-passage { margin-top: 6px; }

.rf-facts { margin: 0; padding: 0; list-style: none; }
.rf-facts li + li { margin-top: 2px; }
.rf-entry-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.rf-section { margin-top: 24px; }
.rf-section-head { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.rf-section-head h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.rf-problem-row { display: flex; align-items: flex-start; gap: 8px; }
.rf-problem-row > .icon { flex: none; margin-top: 2px; }

.rf-dialog-message:not(:empty) { margin-bottom: 16px; }
.rf-preview > p { margin-bottom: 8px; }
.rf-bibtex {
  max-height: 280px; padding: 12px; overflow: auto; white-space: pre-wrap; word-break: break-word;
  background: var(--bg-subtle); border: 1px solid var(--border-muted); border-radius: var(--radius);
}
.rf-source-head { margin-bottom: 6px; }
.rf-source .rf-bibtex { max-height: none; }

/* The reference check's problems in the editor's PDF pane (editor-pdf.js). */
.pdf-problem .rf-problem-tag { flex: none; padding: 0 6px; font-size: 11px; line-height: 16px; }

@media (max-width: 767px) {
  .rf-toggle { flex-wrap: wrap; gap: 4px 8px; padding: 12px; }
  .rf-status { flex: 1 1 auto; width: auto; }
  .rf-main { order: 3; flex-basis: 100%; }
  .rf-detail { padding: 4px 12px 12px; }
  .rf-compare th:first-child { width: 76px; }
  .rf-compare th, .rf-compare td { padding: 6px 8px; }
}