/* IBM Plex Sans/Mono, latin + latin-ext, served from /static/fonts. */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-mono-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-mono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-mono-500-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-mono-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-sans-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/static/fonts/ibm-plex-sans-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- tokens ---------- */

:root {
  /* `only` opts out of Chromium/Samsung Internet forced darkening: the theme is
     app-controlled, so the browser must never re-tint what we already painted. */
  color-scheme: only light;
  --canvas: #fdfcf9;
  --surface: #f1ece5;
  --border: #aaa196;
  --muted: #6b635c;
  --text: #1e1a17;
  --accent: #10736a;
  --on-accent: #fdfcf9;
  --warn: #a8460a;
  --warn-bg: #f7e8dc;
  --overlay: rgba(30, 26, 23, 0.42);
  --shadow: 0 24px 60px rgba(30, 26, 23, 0.28);
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --reading: 780px;
}

:root[data-theme="dark"] {
  color-scheme: only dark;
  --canvas: #1c1916;
  --surface: #26221d;
  --border: #70665a;
  --muted: #a8a29a;
  --text: #eae4d9;
  --accent: #2fd5b5;
  --on-accent: #1c1916;
  --warn: #f0a010;
  --warn-bg: #3a2a12;
  --overlay: rgba(0, 0, 0, 0.58);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* ---------- base ---------- */

* {
  box-sizing: border-box;
}

/* Layout rules below set `display`, which would otherwise beat [hidden]. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.025em;
  font-weight: 600;
}

p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

.meta,
.question-meta,
.panel-meta {
  font-family: var(--mono);
  color: var(--muted);
  overflow-wrap: anywhere;
}

.section-label {
  font: 500 10.5px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  flex: none;
  white-space: nowrap;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.empty {
  color: var(--muted);
  font-size: 13.5px;
}

/* ---------- buttons ---------- */

.primary {
  font: 500 13.5px var(--sans);
  color: var(--on-accent);
  background: var(--accent);
  border: 0;
  border-radius: 9px;
  padding: 9px 20px;
}

.primary:disabled {
  opacity: 0.55;
  cursor: default;
}

.ghost {
  font: 500 13px var(--sans);
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
}

.ghost.warn {
  color: var(--warn);
  border-color: var(--warn);
}

.pill {
  font: 400 12.5px var(--sans);
  color: var(--text);
  background: var(--canvas);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 11px;
  white-space: nowrap;
}

.linky {
  font: 400 13px var(--sans);
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--accent);
}

.linky.warn {
  color: var(--warn);
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 26px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  background: var(--accent);
}

.embedding-loading {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.embedding-loading-spinner {
  width: 12px;
  height: 12px;
  flex: none;
  border: 2px solid var(--border);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.chip {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  white-space: nowrap;
}

.chip.live {
  color: var(--accent);
  border-color: var(--accent);
}

.chip.warn {
  color: var(--warn);
  border-color: var(--warn);
}

.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font-size: 19px;
  line-height: 1;
}

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

.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.toggle:has(input:checked) {
  color: var(--text);
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  width: 32px;
  height: 18px;
  border-radius: 999px;
  background: var(--border);
  position: relative;
  display: block;
  transition: background 0.15s ease;
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--canvas);
  transition: transform 0.15s ease;
}

.toggle input:checked + .toggle-track {
  background: var(--accent);
}

.toggle input:checked + .toggle-track .toggle-thumb {
  transform: translateX(14px);
  background: var(--on-accent);
}

.toggle input:focus-visible + .toggle-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- shell ---------- */

.shell {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 36px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

/* Shell slots are spaced by tens so a new section slots in without
   renumbering its neighbours. */
.hero {
  order: 10;
}

.composer {
  order: 20;
}

/* Example prompts sit under the composer on the initial screen only. */
#suggestions {
  order: 30;
}

#status {
  order: 40;
}

/* The question header stays above the live stage panel while work runs. */
#result {
  order: 50;
}

#progress-panel {
  order: 60;
}

#history {
  order: 80;
}

/* Once an answer is on screen the composer becomes the follow-up field. */
.shell.has-answer .composer {
  order: 70;
}

.hero h1 {
  font-size: 40px;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.hero .subtitle {
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 58ch;
}

/* ---------- composer ---------- */

.composer {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  padding: 15px 16px 12px;
}

.composer textarea {
  display: block;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.55;
  resize: none;
  min-height: 58px;
  max-height: 360px;
  overflow-y: auto;
  padding: 0;
  margin-bottom: 11px;
}

.composer textarea:focus,
.composer textarea:focus-visible {
  outline: none;
}

.composer textarea::placeholder {
  color: var(--muted);
}

.composer-foot {
  display: flex;
  align-items: center;
  gap: 9px;
  border-top: 1px solid var(--border);
  padding-top: 11px;
}

.composer-spacer {
  margin-left: auto;
}

.session-tag {
  display: flex;
  align-items: center;
  gap: 7px;
  font: 400 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  min-width: 0;
}

.session-tag span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 32ch;
}

.session-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}

.session-tag.live .session-dot {
  background: var(--accent);
}

/* ---------- suggested prompts ---------- */

.suggestions-label {
  font: 400 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 9px;
}

.suggestion-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.suggestion {
  font: 400 13px var(--sans);
  text-align: left;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 13px;
  min-height: 34px;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.suggestion:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.suggestion:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.turnstile-panel {
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--canvas);
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 13.5px;
  color: var(--muted);
}

.turnstile-panel p {
  margin-bottom: 10px;
}

/* ---------- status ---------- */

.status {
  font-size: 13.5px;
  color: var(--muted);
  border-left: 2px solid var(--border);
  padding: 2px 0 2px 12px;
}

.status.working {
  border-left-color: var(--accent);
}

.status.cancelled {
  border-left-color: var(--muted);
}

.status.error {
  border-left-color: var(--warn);
  color: var(--warn);
}

/* ---------- working / stages ---------- */

.progress-panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 14px 16px;
}

.progress-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  margin-bottom: 8px;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.3s ease-in-out infinite;
  flex: none;
}

.stages {
  list-style: none;
  margin: 0;
  padding: 0;
}

.stage {
  display: flex;
  gap: 14px;
  padding: 9px 0;
  border-top: 1px solid var(--border);
}

.stage-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--muted);
  flex: none;
  font: 600 11px/15px var(--sans);
  text-align: center;
}

.stage.done .stage-mark {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.stage.active .stage-mark {
  border: 2px solid var(--accent);
  animation: pulse 1.3s ease-in-out infinite;
}

.stage.queued {
  opacity: 0.5;
}

.stage-body {
  flex: 1;
  min-width: 0;
}

.stage-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.stage-name {
  font-weight: 500;
  font-size: 14px;
}

.stage.active .stage-name {
  font-weight: 600;
}

.stage-time {
  margin-left: auto;
  font: 400 11.5px var(--mono);
  color: var(--muted);
}

.stage.active .stage-time {
  color: var(--accent);
}

.progress-note {
  font-size: 11.5px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 4px;
}

.skeleton {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.skeleton span {
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--surface), var(--border), var(--surface));
  background-size: 600px 100%;
  animation: shimmer 1.6s linear infinite;
}

.skeleton .short {
  width: 64%;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    background-position: -240px 0;
  }
  100% {
    background-position: 480px 0;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .live-dot,
  .stage.active .stage-mark,
  .skeleton span,
  .embedding-loading-spinner {
    animation: none;
  }
}

/* ---------- answer ---------- */

#result {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.question-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: -12px;
}

#question-meta-detail {
  letter-spacing: 0.04em;
  font-weight: 400;
  text-transform: none;
  font-size: 11.5px;
}

.asked-query {
  font-size: 34px;
  line-height: 1.16;
  margin-bottom: -4px;
  overflow-wrap: anywhere;
}

.receipt {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 15px;
  background: var(--surface);
}

.receipt-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13px;
}

.receipt-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.receipt-stages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.receipt-stage-bar {
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin-bottom: 8px;
}

.receipt-stage-name {
  font-weight: 500;
  font-size: 12.5px;
}

.receipt-stage-time {
  font: 400 11.5px var(--mono);
  color: var(--muted);
}

.receipt-note {
  font-size: 11.5px;
  color: var(--muted);
  margin-top: 10px;
}

.notice {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--warn-bg);
  border-radius: 12px;
  padding: 13px 15px;
}

.notice.hard {
  background: transparent;
  border: 1.5px solid var(--warn);
  border-radius: 14px;
  padding: 22px 24px;
}

.notice-text {
  min-width: 0;
}

.notice-mark {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--warn);
  color: var(--warn);
  font: 600 12px/17px var(--sans);
  text-align: center;
  flex: none;
}

.notice-title {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--warn);
  display: flex;
  align-items: center;
  gap: 10px;
}

.notice.hard .notice-title {
  font-size: 20px;
  letter-spacing: -0.02em;
}

.notice.hard .notice-mark {
  width: 22px;
  height: 22px;
  line-height: 19px;
  font-size: 13px;
}

.notice-body {
  font-size: 13px;
  color: var(--text);
  margin-top: 2px;
}

.notice.hard .notice-body {
  font-size: 15.5px;
  line-height: 1.62;
  max-width: 64ch;
  margin-top: 0;
}

.answer-state {
  font: 500 10.5px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warn);
  margin-bottom: 10px;
}

.answer-card.answer-failure .answer-text p {
  color: var(--muted);
}

.answer-text p {
  font-size: 17px;
  line-height: 1.72;
  margin-bottom: 14px;
  overflow-wrap: anywhere;
}

.answer-text p:last-child {
  margin-bottom: 0;
}

.cite {
  font: 500 10.5px var(--mono);
  color: var(--accent);
  background: var(--surface);
  border: 0;
  border-radius: 4px;
  padding: 2px 4px;
  margin-left: 3px;
  vertical-align: super;
  line-height: 1;
}

.cite:hover,
.cite:focus-visible {
  background: var(--accent);
  color: var(--on-accent);
}

/* ---------- cited evidence ---------- */

.evidence-grid {
  display: grid;
  /* minmax(0, …) so a long quote or URL cannot widen the page. */
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.evidence-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  scroll-margin-top: 84px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.evidence-card.flash {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--warn-bg);
}

.evidence-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.evidence-id {
  font: 500 10.5px var(--mono);
  color: var(--accent);
  flex: none;
}

.evidence-where {
  font: 400 11px var(--mono);
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.evidence-quote {
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* ---------- searched (no-evidence dead end) ---------- */

.rows {
  border-top: 1px solid var(--border);
}

.row {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}

.row-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.row-value {
  font: 400 12px var(--mono);
  color: var(--muted);
  text-align: right;
}

.row-value.hit {
  color: var(--accent);
  font-weight: 500;
}

.row-value.miss {
  color: var(--warn);
}

/* ---------- detail panels ---------- */

.details {
  border-top: 1px solid var(--border);
}

.panel {
  border-bottom: 1px solid var(--border);
}

.panel > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 0;
  font-size: 13.5px;
  cursor: pointer;
  list-style: none;
}

.panel > summary::-webkit-details-marker {
  display: none;
}

.panel > summary::before {
  content: "+";
  color: var(--accent);
  font-family: var(--mono);
  width: 10px;
}

.panel[open] > summary::before {
  content: "\2013";
}

.panel-meta {
  margin-left: auto;
  font-size: 11.5px;
  text-align: right;
}

.panel-body {
  padding: 2px 0 18px 20px;
}

.subheading {
  font: 500 10.5px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 16px 0 8px;
}

.panel-body > .subheading:first-child {
  margin-top: 0;
}

.kv-grid {
  display: grid;
  grid-template-columns: minmax(150px, 34%) 1fr;
  margin: 0;
  font-size: 13px;
}

.kv-grid dt {
  color: var(--muted);
  padding: 7px 12px 7px 0;
  border-bottom: 1px solid var(--border);
}

.kv-grid dd {
  margin: 0;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 11px;
}

.table-wrap table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
}

.table-wrap th {
  background: var(--surface);
  font: 500 10.5px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 9px 10px;
  white-space: nowrap;
}

.table-wrap td {
  padding: 9px 10px;
  border-top: 1px solid var(--border);
  vertical-align: top;
}

.table-wrap td:first-child {
  font: 500 12px var(--mono);
  color: var(--accent);
}

.plain-list {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.75;
}

.evidence-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  margin-bottom: 9px;
}

.evidence-head {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  margin-bottom: 6px;
}

.evidence-path {
  display: block;
  font: 400 11px var(--mono);
  color: var(--muted);
  margin-bottom: 6px;
  overflow-wrap: anywhere;
}

.evidence-text {
  font-size: 12.5px;
  line-height: 1.5;
}

.contributions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.contributions .badge {
  display: block;
  flex: 1 1 100%;
  min-width: 0;
  max-width: 100%;
  border-radius: 10px;
  padding: 6px 8px;
  line-height: 1.5;
  white-space: normal;
  overflow-wrap: anywhere;
}

.badge {
  font: 400 11px var(--mono);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 8px;
}

.badge.soft {
  border-style: dashed;
}

.api-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
  font-size: 13px;
}

.api-links a {
  color: var(--accent);
}

.trace-lines {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  padding: 12px 14px;
  font: 400 12px/1.85 var(--mono);
  color: var(--muted);
  overflow-x: auto;
  white-space: pre;
}

.trace-lines b {
  color: var(--accent);
  font-weight: 500;
}

/* ---------- history ---------- */

.history {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.history .section-head {
  align-items: center;
}

.history-clear {
  margin-left: auto;
  padding: 7px 0 7px 12px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}

.history-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 11px 0;
  color: var(--text);
  font-family: inherit;
}

.history-main strong {
  font-weight: 500;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-main small {
  font: 400 11.5px var(--mono);
  color: var(--muted);
}

.history-remove {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 13px;
  padding: 6px 8px;
  border-radius: 8px;
}

.history-remove:hover {
  color: var(--warn);
}

/* ---------- settings dialog ---------- */

.settings-dialog {
  width: min(792px, calc(100vw - 40px));
  max-height: min(884px, calc(100dvh - 40px));
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: 18px;
  background: var(--canvas);
  color: var(--text);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.settings-dialog::backdrop {
  background: var(--overlay);
  backdrop-filter: blur(1px);
}

body:has(.settings-dialog[open]) {
  overflow: hidden;
}

.settings-dialog form {
  display: flex;
  flex-direction: column;
  max-height: inherit;
  min-height: 0;
}

.settings-head {
  padding: 26px 30px 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 14px;
}

.settings-title {
  font-size: 25px;
  line-height: 1.1;
}

.settings-changed {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 102px;
  justify-content: center;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--warn-bg);
  font: 500 12px/1 var(--mono);
  color: var(--warn);
  align-self: center;
}

.settings-changed::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.settings-note {
  grid-column: 1 / -1;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
}

.settings-fields {
  padding: 24px 30px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.settings-group + .settings-group {
  margin-top: 24px;
}

.settings-group-label {
  font: 500 11px var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 11px;
}

.settings-grid {
  display: grid;
  gap: 14px;
}

.settings-grid + .settings-grid {
  margin-top: 14px;
}

.settings-grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.settings-grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.settings-field label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.settings-control {
  position: relative;
}

.settings-field input,
.settings-field select {
  width: 100%;
  height: 47px;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--canvas);
  color: var(--text);
  font: 400 15px/1.25 var(--mono);
}

.settings-field select {
  padding-right: 40px;
}

.settings-field input:focus,
.settings-field select:focus {
  outline: 1.5px solid var(--accent);
  outline-offset: -1.5px;
}

.settings-field.changed input,
.settings-field.changed select {
  border-color: var(--warn);
  box-shadow: inset 0 0 0 0.5px var(--warn);
}

.settings-field.changed input:focus,
.settings-field.changed select:focus {
  outline-color: var(--warn);
}

.changed-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warn);
}

.settings-range {
  position: absolute;
  right: 14px;
  bottom: 8px;
  max-width: 72px;
  text-align: right;
  color: var(--muted);
  font: 400 10.5px/1.15 var(--mono);
  pointer-events: none;
}

.settings-control input {
  padding-right: 86px;
}

.settings-edit {
  display: flex;
  gap: 6px;
  align-items: center;
  min-height: 17px;
  margin-top: 4px;
  font: 400 11px/1.3 var(--mono);
  color: var(--muted);
}

.settings-edit .reset {
  color: var(--accent);
  background: transparent;
  border: 0;
  padding: 0;
  font: inherit;
}

.settings-status {
  margin: 0 30px;
  font-size: 13px;
  color: var(--muted);
}

.settings-status.error {
  color: var(--warn);
}

.settings-status.prepare-error {
  color: var(--warn);
  font-weight: 500;
}

.settings-field.has-error input,
.settings-field.has-error select {
  border-color: var(--warn);
}

.settings-field-error {
  display: block;
  margin-top: 4px;
  color: var(--warn);
  font: 400 11px var(--mono);
}

.query-count {
  color: var(--muted);
  font: 400 11px var(--mono);
}

.settings-status.ok {
  color: var(--accent);
}

.settings-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 30px;
  border-top: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  background: var(--surface);
}

.settings-actions-spacer {
  margin-left: auto;
}

.settings-actions .primary {
  min-width: 142px;
}

.settings-actions .ghost {
  min-width: 82px;
}

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .topbar {
    padding: 11px 16px;
    gap: 10px;
  }

  .topbar {
    flex-wrap: wrap;
  }

  #embedding-loading-label {
    display: none;
  }

  /* Suggested prompts stay comfortable touch targets on phones. */
  .suggestion {
    min-height: 44px;
    width: 100%;
    border-radius: 12px;
  }

  .topbar .chip {
    display: block;
    order: 3;
    width: 100%;
  }

  .toggle-label {
    display: inline;
    font-size: 11px;
  }

  .topbar-actions {
    gap: 4px;
  }

  .topbar-actions .ghost {
    padding-left: 6px;
    padding-right: 6px;
  }

  .theme-toggle {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
  }

  .settings-actions > button,
  .settings-edit .reset {
    min-height: 44px;
  }

  .shell {
    padding: 26px 16px 48px;
    gap: 20px;
  }

  .hero h1 {
    font-size: 28px;
    line-height: 1.14;
    letter-spacing: -0.025em;
  }

  .hero .subtitle {
    font-size: 14.5px;
  }

  .asked-query {
    font-size: 25px;
    line-height: 1.18;
  }

  .composer textarea {
    font-size: 16px;
    min-height: 46px;
  }

  .composer-foot {
    flex-wrap: wrap;
  }

  .composer-foot .session-tag {
    flex: 1 1 100%;
  }

  .composer-spacer {
    display: none;
  }

  #new-session {
    flex: 0 0 auto;
  }

  .answer-text p {
    font-size: 15.5px;
    line-height: 44px;
  }

  .evidence-grid,
  .receipt-stages,
  .settings-grid.cols-2,
  .settings-grid.cols-3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .receipt-stages {
    gap: 8px;
  }

  .kv-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .kv-grid dt {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .panel-body {
    padding-left: 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .history .section-head {
    flex-direction: row;
    align-items: center;
  }

  .history-clear {
    min-height: 44px;
    padding-left: 16px;
  }

  .settings-dialog {
    width: 100vw;
    max-width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
    border: 0;
  }

  .settings-dialog form {
    height: 100%;
  }

  .settings-head {
    flex: none;
    padding: calc(20px + env(safe-area-inset-top)) 18px 16px;
  }

  .settings-title {
    font-size: 23px;
  }

  .settings-changed {
    min-width: 88px;
    padding-inline: 10px;
  }

  .settings-note {
    font-size: 13.5px;
  }

  .settings-fields {
    flex: 1 1 auto;
    min-height: 0;
    padding: 20px 18px 24px;
  }

  .settings-group + .settings-group {
    margin-top: 26px;
  }

  .settings-status {
    flex: none;
    margin: 0 18px;
  }

  .settings-actions {
    flex: none;
    padding: 14px 18px calc(14px + env(safe-area-inset-bottom));
    gap: 8px;
  }

  .settings-actions .primary {
    min-width: 0;
    padding-inline: 16px;
  }

  .settings-actions .ghost {
    min-width: 72px;
  }

  .settings-actions .linky {
    max-width: 108px;
    text-align: left;
    line-height: 1.2;
  }

  .primary,
  .ghost,
  .pill,
  .history-remove {
    min-height: 44px;
  }

  .toggle {
    min-height: 44px;
  }

  .cite {
    min-width: 44px;
    min-height: 44px;
    margin: 0 2px;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
  }
}

@media (max-width: 720px) and (max-height: 480px) {
  .shell {
    padding-top: 4px;
    gap: 8px;
  }

  .hero h1 {
    margin-bottom: 6px;
  }

  .hero .subtitle {
    line-height: 1.4;
  }
}