:root {
  --bg: #f6f7f9;
  --panel-bg: #ffffff;
  --border: #e2e6ec;
  --text: #1c1f24;
  --muted: #6b7280;
  --user-bubble: #e6efff;
  --user-bubble-border: #c6d8f7;
  --assistant-bubble: #ffffff;
  --input-bg: #ffffff;
  --input-hover-bg: #f1f3f6;
  --badge-bg: #eef2f7;
  --table-divider: #f0f2f6;
  --status-bg: rgba(255, 255, 255, 0.85);
  --green-bg: #d9f4dd;
  --green-fg: #115b27;
  --red-bg:   #fbdcdc;
  --red-fg:   #8a1a1a;
  --amber-bg: #fdebc6;
  --amber-fg: #7a5200;
  --mixed-pos-bg: repeating-linear-gradient(
    45deg, #d9f4dd 0 8px, #fdebc6 8px 16px
  );
  --mixed-neg-bg: repeating-linear-gradient(
    45deg, #fdebc6 0 8px, #fbdcdc 8px 16px
  );
  --cite-bg: #e1ecff;
  --cite-fg: #1d3a8a;
  --accent: #2563eb;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0e1117;
  --panel-bg: #161b22;
  --border: #2a2f3a;
  --text: #e6e9ef;
  --muted: #8b95a7;
  --user-bubble: #1c2a4a;
  --user-bubble-border: #2a3a66;
  --assistant-bubble: #161b22;
  --input-bg: #1c2027;
  --input-hover-bg: #262c36;
  --badge-bg: #1c2027;
  --table-divider: #232932;
  --status-bg: rgba(22, 27, 34, 0.85);
  --green-bg: #103a1f;
  --green-fg: #8ce4a3;
  --red-bg:   #4a1a1e;
  --red-fg:   #ff9a9a;
  --amber-bg: #3a2a08;
  --amber-fg: #f0c372;
  --mixed-pos-bg: repeating-linear-gradient(
    45deg, #103a1f 0 8px, #3a2a08 8px 16px
  );
  --mixed-neg-bg: repeating-linear-gradient(
    45deg, #3a2a08 0 8px, #4a1a1e 8px 16px
  );
  --cite-bg: #1c2a4a;
  --cite-fg: #9bb8ff;
  --accent: #4d8bfe;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-size: 17px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, "Helvetica Neue", sans-serif;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11", "ss01";
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.run-badge {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  background: var(--badge-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.select-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}
select, button {
  font: inherit;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
}
button:hover, select:hover { background: var(--input-hover-bg); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
#theme-btn { font-size: 1rem; padding: 0.2rem 0.45rem; }
mark.token-hit {
  background: rgba(250, 200, 40, 0.45);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}
[data-theme="dark"] mark.token-hit { background: rgba(250, 200, 40, 0.3); }
.toggle-switch { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; user-select: none; }
.toggle-label { font-size: 0.9rem; color: var(--muted); }
.toggle-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  position: relative; width: 2.2rem; height: 1.2rem;
  background: var(--border); border-radius: 999px;
  transition: background 0.2s;
}
.toggle-switch input:checked + .toggle-track { background: #4c8ef7; }
.toggle-thumb {
  position: absolute; top: 0.15rem; left: 0.15rem;
  width: 0.9rem; height: 0.9rem;
  background: #fff; border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.toggle-switch input:checked + .toggle-track .toggle-thumb { transform: translateX(1rem); }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: start;
  gap: 1rem;
  padding: 1rem;
  max-width: 1400px;
  margin: 0 auto;
}
.left-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}
.chat-panel .bubble:last-child { margin-bottom: 0; }

@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; }
}

.bubble {
  display: flex;
  gap: 0.75rem;
  background: var(--assistant-bubble);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.85rem;
  margin-bottom: 0.4rem;
  word-wrap: break-word;
}
.bubble.user {
  background: var(--user-bubble);
  border-color: var(--user-bubble-border);
}
.bubble-role {
  flex: 0 0 auto;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 0.18rem;
  min-width: 4.5rem;
}
.bubble-body {
  flex: 1 1 auto;
  font-size: 1rem;
  white-space: pre-wrap;
  min-width: 0;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
}
.panel h2 {
  font-size: 0.95rem;
  margin: 0 0 0.6rem 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.count {
  color: var(--muted);
  font-weight: normal;
  font-size: 0.85rem;
}

.metrics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.metrics-table td {
  padding: 0.2rem 0;
  border-bottom: 1px solid var(--table-divider);
}
.metrics-table td:first-child {
  color: var(--muted);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
}
.metrics-table td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.batch-summary {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}
.batch-summary summary {
  cursor: pointer;
  color: var(--muted);
}

.claims-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.claim-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
.claim-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}
.claim-text { flex: 1; }
.claim-cites {
  color: var(--muted);
  font-size: 0.78rem;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
.claim-reason {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 0.25rem;
}
.claim-reason summary {
  cursor: pointer;
  color: var(--accent);
}

.pill {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.pill.supported { background: var(--green-bg); color: var(--green-fg); }
.pill.refuted   { background: var(--red-bg);   color: var(--red-fg); }
.pill.unclear   { background: var(--amber-bg); color: var(--amber-fg); }

.sentence {
  border-radius: 4px;
  padding: 0.05rem 0.15rem;
  transition: background-color 0.15s, box-shadow 0.15s;
}
.sentence[data-claim-ids]:not([data-claim-ids=""]) { cursor: pointer; }
body[data-highlight="support"] .sentence.supported        { background: var(--green-bg); }
body[data-highlight="support"] .sentence.refuted          { background: var(--red-bg); }
body[data-highlight="support"] .sentence.unclear          { background: var(--amber-bg); }
body[data-highlight="support"] .sentence.mixed-positive   { background: var(--mixed-pos-bg); }
body[data-highlight="support"] .sentence.mixed-negative   { background: var(--mixed-neg-bg); }
.sentence.sentence-hover {
  box-shadow: 0 0 0 2px var(--accent);
}
.sentence.sentence-pinned {
  box-shadow: 0 0 0 2px var(--accent), 0 2px 8px rgba(37, 99, 235, 0.25);
  outline: none;
}

.claim-item {
  cursor: pointer;
  transition: box-shadow 0.15s, background-color 0.15s;
}
.claim-item.claim-hover {
  box-shadow: 0 0 0 2px var(--accent);
  background: var(--input-hover-bg);
}
.claim-item.claim-pinned {
  box-shadow: 0 0 0 2px var(--accent), 0 4px 12px rgba(37, 99, 235, 0.2);
  background: var(--input-hover-bg);
}

.cite {
  display: inline-block;
  text-decoration: none;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--cite-fg);
  font-weight: 600;
}
body[data-highlight="citations"] .cite {
  background: var(--cite-bg);
  padding: 0 0.25rem;
  border-radius: 3px;
}

.doc-block {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.75rem;
  transition: box-shadow 0.15s, background-color 0.15s;
}
.doc-block.target {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.18);
}
.doc-block.doc-hover {
  box-shadow: 0 0 0 2px var(--accent);
  background: var(--input-hover-bg);
}
.doc-block.doc-pinned {
  box-shadow: 0 0 0 2px var(--accent), 0 4px 12px rgba(37, 99, 235, 0.2);
  background: var(--input-hover-bg);
}
.doc-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
.doc-cite-num {
  display: inline-block;
  background: var(--cite-bg);
  color: var(--cite-fg);
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  margin-right: 0.5rem;
}
.doc-text {
  font-size: 0.92rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.docs-panel {
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
}
.docs-panel h2 {
  font-size: 0.8rem;
  margin: 0 0 0.5rem 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.status {
  position: fixed;
  bottom: 0.5rem;
  right: 0.75rem;
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--status-bg);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  pointer-events: none;
}
.status.error { color: var(--red-fg); background: var(--red-bg); }

/* ── Ask-question mode ───────────────────────────────────────────────────── */

/* Divider between nav buttons and ask button in the topbar */
.topbar-divider {
  width: 1px;
  height: 1.2em;
  background: var(--border);
  margin: 0 0.25rem;
  flex-shrink: 0;
}

/* "Ask question" / "Cancel" toggle button */
.ask-btn {
  padding: 0.3rem 0.8rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
  white-space: nowrap;
}
.ask-btn:hover { opacity: 0.88; }
body.ask-mode .ask-btn {
  background: var(--muted);
}

/* Textarea inside the question bubble — hidden by default */
.question-input {
  display: none;
  width: 100%;
  box-sizing: border-box;
  padding: 0.4rem 0.5rem;
  margin-top: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  outline: none;
}
.question-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 20%, transparent);
}

/* Evaluate button row — hidden by default */
.ask-actions {
  display: none;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.ask-actions select {
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
}
.ask-actions button {
  padding: 0.35rem 0.9rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.ask-actions button:disabled { opacity: 0.55; cursor: not-allowed; }

/* In ask mode: show textarea + actions, hide the read-only text */
body.ask-mode #question-text { display: none; }
body.ask-mode .question-input { display: block; }
body.ask-mode .ask-actions    { display: flex; }

/* Dim the run-navigation controls while in ask mode */
body.ask-mode #run-select,
body.ask-mode #example-select,
body.ask-mode #prev-btn,
body.ask-mode #next-btn,
body.ask-mode .run-badge {
  opacity: 0.4;
  pointer-events: none;
}

/* Subtle pulsing indicator on the answer-role label while generating/evaluating */
@keyframes pulse-text {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.answer-role-busy { animation: pulse-text 1.4s ease-in-out infinite; }

/* ── Metric info tooltips ────────────────────────────────────────────────── */

.metric-help {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  margin-left: 0.15rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--badge-bg);
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 1;
  cursor: help;
  vertical-align: middle;
}
.metric-help:hover,
.metric-help:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.metric-tip {
  position: absolute;
  z-index: 30;
  top: 130%;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 15rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 400;
  font-family: "Inter", sans-serif;
  text-align: left;
  white-space: normal;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.12s;
  pointer-events: none;
}
.metric-help:hover .metric-tip,
.metric-help:focus-visible .metric-tip,
.metric-help.is-open .metric-tip {
  visibility: visible;
  opacity: 1;
}

/* ── Welcome tutorial ────────────────────────────────────────────────────── */

#help-btn { font-size: 1rem; padding: 0.2rem 0.45rem; }

#tutorial-overlay,
#tutorial-welcome {
  position: fixed;
  inset: 0;
  z-index: 9000;
}
#tutorial-overlay { pointer-events: none; }

.tutorial-dim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  pointer-events: auto;
}

.tutorial-spotlight {
  position: fixed;
  border-radius: 8px;
  box-shadow: 0 0 0 3px var(--accent), 0 0 0 9999px rgba(0, 0, 0, 0.55);
  transition: left 0.2s ease, top 0.2s ease, width 0.2s ease, height 0.2s ease;
  pointer-events: none;
}

.tutorial-callout {
  position: fixed;
  z-index: 9002;
  width: 20rem;
  max-width: calc(100vw - 1rem);
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
  pointer-events: auto;
}
.tutorial-callout-centered {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.tutorial-callout-step {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}
.tutorial-callout-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.tutorial-callout-text {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
}
.tutorial-callout-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.9rem;
}
.tutorial-nav { display: flex; gap: 0.5rem; }
.tutorial-callout-actions button {
  font-size: 0.82rem;
  padding: 0.3rem 0.7rem;
}
.tutorial-next {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.tutorial-skip { color: var(--muted); }