/* Cold Lab — same brutalist aesthetic as Cited. */

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --offwhite: #f6f6f4;
  --grey-100: #f0efec;
  --grey-200: #e8e8e6;
  --grey-400: #a8a8a4;
  --grey-600: #5a5a58;
  --green: #14532d;
  --green-bg: #d1fae5;
  --red: #7f1d1d;
  --red-bg: #fee2e2;
  --yellow: #713f12;
  --yellow-bg: #fef3c7;
  --blue: #1e3a8a;
  --blue-bg: #dbeafe;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--white);
  color: var(--black);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}

header.site {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 22px 36px;
  border-bottom: 1px solid var(--black);
  flex-wrap: wrap;
  gap: 8px;
}

.brand { display: flex; align-items: baseline; gap: 14px; }
.brand-name { font-size: 22px; font-weight: 700; letter-spacing: -0.4px; }
.brand-tag { font-size: 13px; color: var(--grey-600); }

.meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--grey-600);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.dot { display: inline-block; width: 4px; height: 4px; background: var(--grey-400); border-radius: 50%; }
.claim { font-weight: 600; color: var(--black); }

main {
  flex: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 36px 60px 36px;
  width: 100%;
}

.intro .kicker {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 700;
  color: var(--grey-600);
  margin-bottom: 10px;
}

.intro h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.05;
  margin-bottom: 14px;
}
.intro p {
  max-width: 720px;
  font-size: 16px;
  color: var(--grey-600);
  margin-bottom: 14px;
}

.phase-strip {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 18px 0 18px 0;
  border: 1px solid var(--black);
}
.phase-strip .phase {
  padding: 14px 16px;
  border-right: 1px solid var(--black);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 4px;
  background: var(--white);
}
.phase-strip .phase:last-child { border-right: none; }
.phase-strip .phase.active { background: var(--offwhite); }
.phase-strip .phase.complete { background: var(--green-bg); }
.phase-strip .phase-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--grey-600);
}
.phase-strip .phase.complete .phase-num { color: var(--green); }
.phase-strip .phase-label {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.4px;
}
.phase-strip .phase-detail {
  font-size: 12px;
  color: var(--grey-600);
  line-height: 1.4;
}
.phase-strip .phase-tick {
  font-size: 14px;
  font-weight: 700;
  color: var(--grey-400);
  align-self: end;
  justify-self: end;
}
.phase-strip .phase.complete .phase-tick { color: var(--green); }
.phase-strip .phase.complete .phase-tick::before { content: "●"; }
.phase-strip .phase:not(.complete) .phase-tick::before { content: "○"; }

.rules {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}
.rule-pill {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  border: 1px solid var(--black);
  background: var(--white);
  color: var(--black);
  font-weight: 600;
}

/* --- Layout -------------------------------------------------------------- */

.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
}

.cases-pane {
  border: 1px solid var(--black);
  padding: 18px;
  position: sticky;
  top: 24px;
}

.cases-pane h2,
.workspace-content h2,
.workspace-content h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 10px;
}

.workspace-content h3 { font-size: 16px; margin-top: 24px; margin-bottom: 8px; }
.workspace-content > div + div { margin-top: 0; }

.new-case {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.new-case input {
  border: 1px solid var(--black);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
}
.new-case input:focus { outline: 2px solid var(--black); outline-offset: -1px; }

button {
  background: var(--black);
  color: var(--white);
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
  padding: 10px 16px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { background: var(--grey-600); }
button:disabled { background: var(--grey-400); cursor: not-allowed; }

.cases-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-item {
  padding: 10px 12px;
  border: 1px solid var(--grey-200);
  cursor: pointer;
  transition: background 0.1s;
}
.case-item:hover { background: var(--offwhite); }
.case-item.active { border-color: var(--black); background: var(--grey-100); }
.case-item .title { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.case-item .meta { font-size: 11px; color: var(--grey-600); display: flex; gap: 8px; flex-wrap: wrap; }

/* --- Workspace ----------------------------------------------------------- */

.workspace {
  border: 1px solid var(--black);
  padding: 24px;
  min-height: 480px;
}

.workspace-empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  font-size: 15px;
  color: var(--grey-400);
}

.workspace-content.hidden { display: none; }

.case-header { padding-bottom: 16px; border-bottom: 1px solid var(--grey-200); margin-bottom: 16px; }
.case-header h2 { font-size: 22px; font-weight: 700; }
.muted { color: var(--grey-600); font-size: 13px; margin-top: 4px; }

.ingest {
  border: 1px dashed var(--grey-400);
  padding: 14px;
  margin-top: 18px;
}
.ingest input,
.ingest textarea {
  width: 100%;
  border: 1px solid var(--black);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  margin-top: 8px;
  display: block;
  resize: vertical;
}
.ingest input:focus,
.ingest textarea:focus { outline: 2px solid var(--black); outline-offset: -1px; }
.ingest button { margin-top: 12px; }

/* --- Evidence list ------------------------------------------------------- */

.evidence-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.evidence-item {
  border: 1px solid var(--black);
  padding: 14px 16px;
}
.evidence-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  margin-bottom: 8px;
  gap: 8px;
}
.evidence-label { font-weight: 600; font-size: 14px; }
.evidence-counts {
  display: flex;
  gap: 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.count-pill {
  padding: 2px 8px;
  border: 1px solid var(--grey-400);
  background: var(--white);
  font-weight: 600;
}
.count-pill.redactions { background: var(--red-bg); border-color: var(--red); color: var(--red); }
.count-pill.entities { background: var(--blue-bg); border-color: var(--blue); color: var(--blue); }

.evidence-text {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.55;
  background: var(--offwhite);
  padding: 12px;
  white-space: pre-wrap;
  word-wrap: break-word;
  border-left: 3px solid var(--grey-400);
  max-height: 240px;
  overflow-y: auto;
}

.redacted-token {
  background: var(--red-bg);
  color: var(--red);
  padding: 0 4px;
  border-radius: 2px;
  font-weight: 600;
}

.evidence-redactions {
  margin-top: 10px;
  font-size: 12px;
  color: var(--grey-600);
}
.evidence-redactions summary { cursor: pointer; font-weight: 600; }
.evidence-redactions ul { list-style: none; margin-top: 6px; }
.evidence-redactions li { padding: 2px 0; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 11px; }

/* --- Cross-references --------------------------------------------------- */

.cross-refs {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cross-ref {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--grey-200);
  font-size: 13px;
  align-items: baseline;
}
.cross-ref .kind {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--grey-600);
}
.cross-ref .normalized { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 12px; }
.cross-ref .sources { font-size: 11px; color: var(--grey-600); }
.cross-ref.signal {
  background: var(--green-bg);
  padding-left: 8px;
}
.cross-ref.signal .sources { color: var(--green); font-weight: 700; }

/* --- Brain -------------------------------------------------------------- */

.brain-wrap {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px dashed var(--grey-200);
}

.brain-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.brain-empty {
  padding: 18px 0;
  font-size: 13px;
}

.brain-empty.hidden,
.brain-refusal.hidden { display: none; }

.brain-content.hidden { display: none; }

.brain-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--grey-600);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.brain-stats .stat {
  border: 1px solid var(--black);
  padding: 4px 10px;
  font-weight: 600;
}

.brain-stats .stat .num {
  color: var(--black);
  font-size: 16px;
  margin-right: 4px;
}

.brain-refusal {
  background: var(--yellow-bg);
  border: 1px solid var(--yellow);
  color: var(--yellow);
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}

.brain-heading {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-top: 18px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- Hypothesis (Module 4) ------------------------------------------ */

.hypothesis-actions {
  display: flex;
  gap: 10px;
  margin: 8px 0 14px;
  flex-wrap: wrap;
}

.hypothesis-actions button {
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 8px 14px;
  border: 1px solid var(--black);
  background: var(--offwhite, #fafaf7);
  color: var(--black);
  cursor: pointer;
}

.hypothesis-actions button:hover:not(:disabled) {
  background: var(--black);
  color: #fafaf7;
}

.hypothesis-actions button.primary {
  background: var(--black);
  color: #fafaf7;
}

.hypothesis-actions button.primary:hover:not(:disabled) {
  background: #fafaf7;
  color: var(--black);
}

.hypothesis-actions button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.hypothesis-content.hidden { display: none; }

.hypothesis-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--grey-600);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.hypothesis-meta .stat {
  border: 1px solid var(--black);
  padding: 4px 10px;
  font-weight: 600;
}

.hypothesis-meta .stat .num {
  color: var(--black);
  font-size: 16px;
  margin-right: 4px;
}

.hypothesis-meta .stat.run-id {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  border-style: dashed;
}

.hypothesis-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.claim-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.claim-group-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--grey-600);
  margin: 0 0 4px;
  padding-bottom: 2px;
  border-bottom: 1px dashed var(--grey-200);
}

.claim-card {
  border: 1px solid var(--black);
  padding: 10px 12px;
  background: var(--offwhite, #fafaf7);
}

.claim-card.claim-gap {
  border-style: dashed;
  background: var(--yellow-bg);
}

.claim-card.claim-contradiction {
  border-style: dashed;
  background: var(--yellow-bg);
}

.claim-card.claim-refused {
  border-style: dashed;
  background: var(--grey-100);
  color: var(--grey-600);
}

.claim-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--grey-600);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.claim-rank {
  font-weight: 800;
  color: var(--black);
}

.claim-conf {
  font-weight: 700;
  color: var(--black);
}

.score-bar {
  flex: 1;
  min-width: 80px;
  height: 6px;
  background: var(--grey-200);
  position: relative;
  overflow: hidden;
}

.score-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--black);
}

.redaction-badge {
  background: var(--yellow);
  color: #fafaf7;
  font-size: 10px;
  padding: 2px 6px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.claim-body {
  margin: 4px 0 6px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--black);
}

.claim-quotes {
  margin-top: 6px;
  font-size: 12px;
  color: var(--grey-600);
}

.claim-quotes summary {
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--grey-600);
  padding: 2px 0;
}

.claim-quote {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 8px;
  padding: 4px 0;
  border-top: 1px dashed var(--grey-200);
  font-size: 12px;
  color: var(--grey-600);
  align-items: baseline;
}

.claim-quote .ev-id {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-weight: 700;
  color: var(--black);
}

.centrality-list,
.connections-list,
.brain-timeline,
.brain-threads {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.centrality-row {
  display: grid;
  grid-template-columns: 80px 1fr auto auto auto;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--grey-200);
  font-size: 13px;
  align-items: baseline;
}

.centrality-row .kind { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--grey-600); }
.centrality-row .label { font-weight: 600; }
.centrality-row .stat-mini { font-size: 11px; color: var(--grey-600); white-space: nowrap; }
.centrality-row .score-pill { font-size: 11px; padding: 2px 8px; border: 1px solid var(--black); font-weight: 700; font-variant-numeric: tabular-nums; }

.connection-row {
  display: grid;
  grid-template-columns: 16px 1fr 1fr auto;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--grey-200);
  font-size: 13px;
  align-items: baseline;
}

.connection-row.cross-kind { background: var(--green-bg); padding-left: 8px; padding-right: 8px; }
.connection-row.cross-kind .star { color: var(--green); font-weight: 800; }
.connection-row .endpoint .kind { font-size: 9px; text-transform: uppercase; letter-spacing: 1px; color: var(--grey-600); margin-right: 4px; }
.connection-row .endpoint .label { font-weight: 600; }
.connection-row .ev-count { font-size: 11px; color: var(--grey-600); white-space: nowrap; }

.timeline-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--grey-200);
  font-size: 13px;
  align-items: baseline;
}

.timeline-row .date {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.timeline-row .co-entities {
  font-size: 12px;
  color: var(--grey-600);
}

.timeline-row .co-tag {
  display: inline-block;
  padding: 1px 6px;
  margin: 2px 4px 2px 0;
  border: 1px solid var(--grey-400);
  font-size: 11px;
}

.thread-card {
  border: 1px solid var(--black);
  padding: 12px 14px;
  margin-bottom: 10px;
}

.thread-card .thread-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
  flex-wrap: wrap;
  gap: 6px;
}

.thread-card .rank {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.thread-card .conf-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border: 1px solid var(--black);
  font-variant-numeric: tabular-nums;
}

.thread-card .conf-high { background: var(--green-bg); color: var(--green); border-color: var(--green); }
.thread-card .conf-mid  { background: var(--yellow-bg); color: var(--yellow); border-color: var(--yellow); }
.thread-card .conf-low  { background: var(--red-bg); color: var(--red); border-color: var(--red); }

.thread-card .thread-spine {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.6;
}

.thread-card .thread-spine .spine-tag {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 6px;
  margin-bottom: 4px;
  border: 1px solid var(--black);
  font-size: 12px;
}

.thread-card .thread-spine .spine-tag.person { background: var(--blue-bg); border-color: var(--blue); color: var(--blue); }
.thread-card .thread-spine .spine-tag.place  { background: var(--green-bg); border-color: var(--green); color: var(--green); }
.thread-card .thread-spine .spine-tag.date   { background: var(--yellow-bg); border-color: var(--yellow); color: var(--yellow); }

.thread-card .thread-corroborators {
  font-size: 12px;
  color: var(--grey-600);
  margin-top: 4px;
}

.thread-card .thread-narrative {
  font-size: 12px;
  color: var(--grey-600);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--grey-200);
  font-style: italic;
}

/* --- Tabs --------------------------------------------------------------- */

.input-tabs {
  display: flex;
  gap: 0;
  margin-top: 18px;
  border-bottom: 1px solid var(--black);
}

.tab-btn {
  background: var(--white);
  color: var(--black);
  border: 1px solid var(--black);
  border-bottom: none;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 8px 14px;
  cursor: pointer;
  margin-right: -1px;
}

.tab-btn:hover { background: var(--offwhite); }
.tab-btn.active { background: var(--black); color: var(--white); }

.ingest.hidden { display: none; }

/* --- Scenarios ---------------------------------------------------------- */

.scenarios-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

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

.scenario-card {
  border: 1px solid var(--black);
  padding: 14px 16px;
}

.scenario-card.top { border-width: 2px; }
.scenario-card.alternative { border-style: dashed; background: var(--offwhite); }

.scenario-card .role {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--grey-600);
  margin-bottom: 4px;
}
.scenario-card.top .role { color: var(--black); }
.scenario-card.alternative .role { color: var(--yellow); }

.scenario-card .scenario-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 6px;
}

.scenario-card .scenario-rank { font-size: 11px; font-weight: 800; }

.scenario-spine {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.7;
}
.scenario-spine .spine-tag {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 6px;
  margin-bottom: 4px;
  border: 1px solid var(--black);
  font-size: 12px;
}
.scenario-spine .spine-tag.person { background: var(--blue-bg); border-color: var(--blue); color: var(--blue); }
.scenario-spine .spine-tag.place  { background: var(--green-bg); border-color: var(--green); color: var(--green); }
.scenario-spine .spine-tag.date   { background: var(--yellow-bg); border-color: var(--yellow); color: var(--yellow); }

.scenario-section {
  margin-top: 10px;
  font-size: 12px;
}

.scenario-section h5 {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
  color: var(--grey-600);
}

.template-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  padding: 4px 0;
  border-bottom: 1px dashed var(--grey-200);
  align-items: baseline;
}

.template-row .label { font-weight: 600; }
.template-row .keywords { font-family: ui-monospace, monospace; font-size: 11px; color: var(--grey-600); }
.template-row .score-pill {
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--black);
  font-weight: 700;
}

.contradictions {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--grey-200);
  font-size: 12px;
  color: var(--red);
}

.contradictions .contradiction {
  padding: 2px 0;
}

.scenarios-others { margin-top: 10px; font-size: 13px; }
.scenarios-others summary { cursor: pointer; font-weight: 600; }
.scenarios-others ol { list-style: none; margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.scenarios-others .other-scenario {
  padding: 8px 12px;
  border: 1px solid var(--grey-400);
  font-size: 12px;
}

/* --- Heatmaps ----------------------------------------------------------- */

.heatmaps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.heatmap-card {
  border: 1px solid var(--black);
  padding: 12px;
}

.heatmap-card h5 {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.heat-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 4px 0;
  font-size: 12px;
}

.heat-row .heat-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.heat-row .heat-bar-wrap {
  position: relative;
  background: var(--grey-100);
  height: 12px;
  width: 110px;
  border: 1px solid var(--grey-400);
}
.heat-row .heat-bar {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--black);
}
.heat-row .heat-num {
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  font-weight: 700;
  margin-left: 4px;
}

/* --- Collab ------------------------------------------------------------- */

.collab-wrap {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px dashed var(--grey-200);
}

.members-row, .comments-row { margin-top: 12px; }

.add-member {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
  align-items: stretch;
}
.add-member input,
.add-member select {
  border: 1px solid var(--black);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 12px;
}
.add-member input { flex: 1; min-width: 180px; }
.add-member button { padding: 8px 12px; font-size: 12px; }

.members-list {
  list-style: none;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.members-list li {
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid var(--black);
  background: var(--white);
  font-weight: 600;
}
.members-list li .role-pill {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--grey-600);
  margin-left: 6px;
}

.add-comment {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px;
  margin-bottom: 10px;
}
.add-comment select,
.add-comment input,
.add-comment textarea {
  border: 1px solid var(--black);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 12px;
}
.add-comment textarea {
  grid-column: 1 / -1;
  resize: vertical;
}
.add-comment button {
  grid-column: 1 / -1;
  justify-self: start;
  padding: 8px 14px;
  font-size: 12px;
}

.comments-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.comment-item {
  border-left: 3px solid var(--black);
  padding: 6px 10px;
  background: var(--offwhite);
  font-size: 13px;
}
.comment-item .meta {
  font-size: 11px;
  color: var(--grey-600);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.comment-item .meta strong { color: var(--black); }

/* --- Role lens bar ------------------------------------------------------ */

.lens-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 24px;
  padding: 10px 12px;
  background: var(--black);
  color: var(--white);
  flex-wrap: wrap;
}
.lens-bar .lens-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-right: 4px;
}
.lens-btn {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--white);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  cursor: pointer;
}
.lens-btn:hover { background: var(--grey-600); }
.lens-btn.active { background: var(--white); color: var(--black); }

.lens-pane.hidden { display: none; }
.lens-pane h3 { font-size: 18px; font-weight: 700; margin-top: 20px; margin-bottom: 8px; }
.lens-pane h4 { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.8px; margin: 16px 0 8px; }
.lens-section { padding-top: 8px; }

/* Suspects / persons list */
.suspects-list, .findings-list, .gaps-list, .suggested-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.suspect-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--grey-200);
  font-size: 13px;
}
.suspect-row.tagged { border-color: var(--black); background: var(--offwhite); }
.suspect-row .role-badge {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 2px 8px;
  border: 1px solid var(--black);
}
.suspect-row .role-badge.suspect { background: var(--red-bg); color: var(--red); border-color: var(--red); }
.suspect-row .role-badge.poi     { background: var(--yellow-bg); color: var(--yellow); border-color: var(--yellow); }
.suspect-row .role-badge.witness { background: var(--blue-bg); color: var(--blue); border-color: var(--blue); }
.suspect-row .role-badge.victim  { background: var(--green-bg); color: var(--green); border-color: var(--green); }
.suspect-row .role-badge.cleared { background: var(--grey-100); color: var(--grey-600); }
.suspect-row select {
  border: 1px solid var(--grey-400);
  padding: 4px 6px;
  font-size: 11px;
  font-family: inherit;
}

.working-theory {
  padding: 10px 12px;
  border: 2px solid var(--black);
  background: var(--yellow-bg);
  font-size: 13px;
  font-weight: 600;
}
.working-theory.empty { background: var(--white); border-style: dashed; color: var(--grey-600); font-weight: normal; }

.gaps-list .gap-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 10px;
  align-items: start;
  padding: 8px 10px;
  border-left: 4px solid var(--grey-400);
  background: var(--offwhite);
  font-size: 13px;
}
.gaps-list .gap-row.high   { border-left-color: var(--red); }
.gaps-list .gap-row.medium { border-left-color: var(--yellow); }
.gaps-list .gap-row.low    { border-left-color: var(--blue); }
.gaps-list .severity-pill {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 3px 6px;
  background: var(--black);
  color: var(--white);
  text-align: center;
  align-self: start;
}
.gaps-list .gap-row .gap-summary { font-weight: 600; }
.gaps-list .gap-row .gap-detail { font-size: 12px; color: var(--grey-600); margin-top: 4px; }

.findings-list .finding-row {
  border: 1px solid var(--black);
  padding: 10px 12px;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.findings-list .finding-row .finding-meta {
  font-size: 11px;
  color: var(--grey-600);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.exam-meta-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.exam-meta-form input,
.exam-meta-form textarea {
  border: 1px solid var(--black);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 12px;
}
.exam-meta-form button {
  align-self: flex-start;
  padding: 8px 14px;
  font-size: 12px;
}

.suggested-list a {
  color: var(--black);
  font-weight: 600;
  text-decoration: underline;
}

/* --- Audit -------------------------------------------------------------- */

.audit-list {
  list-style: none;
  font-size: 12px;
  color: var(--grey-600);
}
.audit-entry {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding: 4px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
.audit-entry .when { font-variant-numeric: tabular-nums; }

/* --- Footer ------------------------------------------------------------- */

.site-footer {
  margin-top: 60px;
  padding-top: 18px;
  border-top: 1px solid var(--black);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--grey-600);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------------------------------------------------------------- */
/* Responsive sweep                                                       */
/* ---------------------------------------------------------------------- */

/* Up to 1280px: shrink horizontal padding, narrow the cases sidebar     */
@media (max-width: 1280px) {
  main { padding: 32px 28px 60px 28px; }
  .layout { grid-template-columns: 240px 1fr; gap: 20px; }
  .intro h1 { font-size: 34px; }
  .scenarios-pair { grid-template-columns: 1fr 1fr; gap: 12px; }
}

/* Up to 1024px: the four-phase strip starts to crush; let it wrap to 2x2 */
@media (max-width: 1024px) {
  .phase-strip {
    grid-template-columns: 1fr 1fr;
  }
  .phase-strip .phase:nth-child(2) { border-right: none; }
  .phase-strip .phase:nth-child(1),
  .phase-strip .phase:nth-child(2) {
    border-bottom: 1px solid var(--black);
  }
  .layout { grid-template-columns: 220px 1fr; gap: 18px; }
  .heatmaps { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  header.site { padding: 18px 24px; }
}

/* Up to 900px: collapse to single column, stack everything, scenarios stack */
@media (max-width: 900px) {
  main { padding: 24px 20px 50px 20px; }
  .intro h1 { font-size: 28px; line-height: 1.1; }
  .layout { grid-template-columns: 1fr; gap: 16px; }
  .cases-pane { position: static; max-height: 280px; overflow-y: auto; }
  .scenarios-pair { grid-template-columns: 1fr; }
  .cross-ref { grid-template-columns: 1fr; gap: 4px; }
  .audit-entry { grid-template-columns: 1fr; }
  .add-comment { grid-template-columns: 1fr; }
  .heatmaps { grid-template-columns: 1fr; }
  .lens-bar { padding: 8px 10px; gap: 6px; }
  .lens-btn { padding: 5px 10px; font-size: 11px; }
}

/* Up to 600px: phone-shape — phases stack 1x4, header wraps cleanly      */
@media (max-width: 600px) {
  header.site { padding: 14px 16px; flex-direction: column; align-items: flex-start; gap: 6px; }
  .meta { font-size: 10px; gap: 6px; }
  main { padding: 20px 14px 40px 14px; }
  .intro h1 { font-size: 24px; }
  .intro p { font-size: 14px; }
  .phase-strip { grid-template-columns: 1fr; }
  .phase-strip .phase {
    border-right: none !important;
    border-bottom: 1px solid var(--black);
  }
  .phase-strip .phase:last-child { border-bottom: none; }
  .input-tabs { flex-wrap: wrap; }
  .tab-btn { padding: 6px 10px; font-size: 11px; }
  .composer-actions { flex-direction: column; align-items: stretch; }
  .composer-actions input[type="text"] { min-width: 0; }
  .verdict { grid-template-columns: 1fr; }
  .history-item { grid-template-columns: 1fr; gap: 4px; }
  .suspect-row { grid-template-columns: 1fr; gap: 6px; }
  .suspect-row select { width: 100%; }
  .gap-row { grid-template-columns: 1fr; }
  .add-member { flex-direction: column; }
  .add-member input,
  .add-member select { width: 100%; }
  .new-case { gap: 6px; }
  .ingest input,
  .ingest textarea { font-size: 13px; }
  .scenario-card { padding: 12px; }
  .scenario-card .scenario-spine .spine-tag { font-size: 11px; padding: 2px 6px; }
  .heat-row { grid-template-columns: 1fr auto; }
  .heat-row .heat-bar-wrap { width: 80px; }
}

/* ===========================================================
   v0.5 SHELL — auth screen, sidebar, conversational canvas,
   profile dropdown, reasoning rail. Overrides the legacy
   `main` rule via more specific class selectors.
   =========================================================== */

/* Force the HTML `hidden` attribute to win over `display:grid` on shells. */
[hidden] { display: none !important; }

main.auth-shell {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
  padding: 60px 56px;
  max-width: 1100px;
  margin: 0 auto;
}

.auth-intro .kicker {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 700; color: var(--grey-600); margin-bottom: 12px;
}
.auth-intro h1 {
  font-size: 38px; font-weight: 700; letter-spacing: -1px;
  line-height: 1.05; margin-bottom: 16px;
}
.auth-blurb {
  color: var(--grey-600); font-size: 16px;
  max-width: 520px; margin-bottom: 22px;
}
.auth-rules {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
  padding: 0; margin: 0;
}
.auth-rules .rule-pill {
  border: 1px solid var(--black); padding: 6px 12px;
  font-size: 12px; font-weight: 600;
  display: inline-block; background: var(--white);
}

.auth-card {
  border: 1px solid var(--black);
  background: var(--white);
  padding: 28px 28px 24px;
}
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--black);
  margin: -28px -28px 22px;
}
.auth-tab {
  flex: 1; padding: 14px 18px;
  background: var(--offwhite);
  border: none; border-right: 1px solid var(--black);
  font-family: inherit; font-size: 12px;
  font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer; color: var(--grey-600);
}
.auth-tab:last-child { border-right: none; }
.auth-tab.active { background: var(--black); color: var(--white); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form.hidden { display: none; }
.auth-form label {
  display: flex; flex-direction: column; gap: 6px;
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; color: var(--grey-600);
}
.auth-form input {
  font-family: inherit; font-size: 15px;
  padding: 10px 12px; border: 1px solid var(--black);
  background: var(--white); color: var(--black);
}
.auth-form input:focus { outline: 2px solid var(--black); outline-offset: -2px; }
.auth-submit {
  margin-top: 6px;
  background: var(--black); color: var(--white);
  border: 1px solid var(--black); padding: 12px 16px;
  font-family: inherit; font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; cursor: pointer;
}
.auth-submit:hover { background: var(--white); color: var(--black); }
.auth-error {
  margin-top: 6px; padding: 8px 10px;
  background: var(--red-bg); color: var(--red);
  border: 1px solid var(--red);
  font-size: 13px; font-weight: 600;
}

.auth-banner {
  margin: 0 0 14px;
  padding: 8px 10px;
  background: var(--yellow-bg); color: var(--yellow);
  border: 1px solid var(--yellow);
  font-size: 13px; font-weight: 600;
}

/* "Continue with Google" anchor — server-side OAuth flow, no third-party JS. */
.google-block { margin-bottom: 18px; }
.auth-divider {
  display: flex; align-items: center;
  margin: 14px 0;
  color: var(--grey-600);
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.5px;
}
.auth-divider::before,
.auth-divider::after {
  content: ""; flex: 1; height: 1px;
  background: var(--grey-200);
}
.auth-divider span { padding: 0 12px; }

.google-btn {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  width: 100%;
  padding: 12px 16px;
  background: var(--white);
  color: var(--black);
  border: 1px solid var(--black);
  text-decoration: none;
  font-family: inherit; font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
}
.google-btn:hover { background: var(--black); color: var(--white); }
.google-btn .google-mark {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--white); color: var(--black);
  border: 1px solid var(--black);
  font-family: Georgia, serif; font-size: 14px; font-weight: 800;
  border-radius: 50%;
}
.google-btn:hover .google-mark { background: var(--black); color: var(--white); border-color: var(--white); }

/* --- Admin dashboard --- */

.admin-shell {
  padding: 28px 32px 60px;
  overflow-y: auto;
  max-height: calc(100vh - 78px - 56px);
}
.admin-head {
  display: flex; flex-direction: column; gap: 6px;
  border-bottom: 1px solid var(--black);
  padding-bottom: 14px; margin-bottom: 18px;
  position: relative;
}
.admin-head h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.4px; }
.admin-head #admin-close { align-self: flex-start; margin-top: 6px; }

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin-bottom: 22px;
}
.stat-card {
  border: 1px solid var(--black);
  background: var(--white);
  padding: 12px 14px;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 1px;
  color: var(--grey-600);
}
.stat-card .num {
  font-size: 26px; font-weight: 700;
  color: var(--black);
  letter-spacing: -0.5px;
  text-transform: none;
}
.stat-card-wide {
  grid-column: 1 / -1;
  flex-direction: column;
}
.provider-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }

.admin-h3 {
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.2px;
  color: var(--grey-600);
  margin-bottom: 8px;
}
.admin-users-wrap {
  border: 1px solid var(--black);
  background: var(--white);
  overflow-x: auto;
}
.admin-users {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.admin-users th, .admin-users td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--grey-200);
  text-align: left;
}
.admin-users th {
  background: var(--offwhite);
  font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--grey-600);
}
.admin-users tbody tr:last-child td { border-bottom: none; }

/* --- Profile dropdown in header --- */

.profile-slot { position: relative; }
.profile-trigger {
  display: flex; align-items: center; gap: 8px;
  background: var(--white);
  border: 1px solid var(--black);
  padding: 6px 12px;
  font-family: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer; color: var(--black);
}
.profile-trigger:hover { background: var(--black); color: var(--white); }
.profile-trigger .profile-dot {
  width: 8px; height: 8px; background: var(--green); border-radius: 50%;
}
.profile-trigger .caret { font-size: 10px; color: var(--grey-600); }
.profile-trigger:hover .caret { color: var(--white); }
.profile-menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 240px;
  background: var(--white); border: 1px solid var(--black);
  z-index: 30;
}
.profile-meta {
  padding: 12px 14px;
  border-bottom: 1px solid var(--black);
}
.profile-line { font-size: 13px; }
.profile-line.muted { font-size: 11px; color: var(--grey-600); margin-top: 4px; }
.profile-action {
  display: block; width: 100%;
  background: var(--white); border: none;
  padding: 12px 14px; text-align: left;
  font-family: inherit; font-size: 13px; font-weight: 600;
  color: var(--black); cursor: pointer;
}
.profile-action:hover { background: var(--black); color: var(--white); }

/* --- App shell: sidebar + canvas + reasoning rail --- */

main.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  max-width: 1400px;
  padding: 0;
  gap: 0;
  align-items: stretch;
  min-height: calc(100vh - 78px - 56px);   /* full height minus header + footer */
}

.sidebar {
  border-right: 1px solid var(--black);
  display: flex; flex-direction: column;
  background: var(--offwhite);
  min-height: 100%;
}
.sidebar-head {
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--black);
}
.new-case-btn {
  width: 100%;
  background: var(--black); color: var(--white);
  border: 1px solid var(--black); padding: 10px 14px;
  font-family: inherit; font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; cursor: pointer;
}
.new-case-btn:hover { background: var(--white); color: var(--black); }

.cases-list {
  list-style: none; padding: 0; margin: 0;
  flex: 1; overflow-y: auto;
}
.case-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--grey-200);
  cursor: pointer;
  display: flex; flex-direction: column; gap: 4px;
}
.case-item:hover { background: var(--white); }
.case-item.active {
  background: var(--white);
  border-left: 3px solid var(--black);
  padding-left: 13px;
}
.case-item.empty { cursor: default; padding: 18px 16px; }
.case-item-title {
  font-size: 14px; font-weight: 600; line-height: 1.3;
}
.case-item.active .case-item-title { font-weight: 700; }
.case-item-meta {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--grey-600);
}

.sidebar-foot {
  padding: 12px 16px;
  font-size: 11px;
  border-top: 1px solid var(--grey-200);
}

/* --- Canvas (chat + side rail) --- */

.canvas {
  display: flex; flex-direction: column;
  min-height: 100%;
  position: relative;
}

.canvas-empty {
  padding: 80px 56px;
  max-width: 640px;
}
.canvas-empty .kicker {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 700; color: var(--grey-600); margin-bottom: 12px;
}
.canvas-empty h2 {
  font-size: 32px; font-weight: 700; line-height: 1.1;
  letter-spacing: -0.6px; margin-bottom: 14px;
}
.canvas-empty p { color: var(--grey-600); }

.canvas-active {
  display: grid;
  grid-template-columns: 1fr;
  flex: 1;
  min-height: 0;
}
/* When the rail is open it slides in as a second column. */
.canvas-active:has(#reasoning-rail:not([hidden])) {
  grid-template-columns: 1fr 380px;
}

.case-header {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 22px 32px 12px;
  border-bottom: 1px solid var(--grey-200);
  grid-column: 1 / -1;
}
.case-title-block { flex: 1; min-width: 0; }
.case-title {
  font-size: 22px; font-weight: 700;
  letter-spacing: -0.4px; line-height: 1.2;
  word-break: break-word;
}
.case-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.case-action {
  background: var(--white); border: 1px solid var(--black);
  padding: 8px 12px;
  font-family: inherit; font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer; color: var(--black);
}
.case-action:hover:not(:disabled) { background: var(--black); color: var(--white); }
.case-action.primary { background: var(--black); color: var(--white); }
.case-action.primary:hover:not(:disabled) { background: var(--white); color: var(--black); }
.case-action.ghost {
  background: transparent;
  border-style: dashed;
  color: var(--grey-600);
}
.case-action:disabled { opacity: 0.4; cursor: not-allowed; }

.canvas-active .phase-strip {
  margin: 0 32px 0 32px;
  grid-column: 1 / 2;
  min-width: 0;
}
.phase-strip .phase {
  padding: 12px 14px;
  display: flex; flex-direction: column; gap: 4px;
}
.phase-strip .phase-num {
  font-size: 10px; font-weight: 700; letter-spacing: 1.5px; color: var(--grey-600);
}
.phase-strip .phase-label { font-size: 14px; font-weight: 700; }
.phase-strip .phase-detail { font-size: 12px; color: var(--grey-600); }

.chat-scroll {
  grid-column: 1 / 2;
  padding: 18px 32px;
  overflow-y: auto;
  flex: 1;
  display: flex; flex-direction: column; gap: 14px;
  min-height: 320px;
  max-height: calc(100vh - 280px);
}
.chat-empty {
  text-align: center; padding: 60px 0;
  font-size: 14px;
}

/* --- Messages --- */

.msg {
  border: 1px solid var(--grey-200);
  background: var(--white);
  padding: 10px 14px;
  max-width: 720px;
  display: flex; flex-direction: column; gap: 4px;
}
.msg.msg-user {
  align-self: flex-end;
  background: var(--black); color: var(--white);
  border-color: var(--black);
}
.msg.msg-system { align-self: flex-start; }
.msg.msg-kind-evidence { border-left: 3px solid var(--black); }
.msg.msg-kind-finding  { border-left: 3px solid var(--green); }
.msg.msg-kind-refusal  { border-left: 3px solid var(--yellow); background: var(--yellow-bg); }
.msg.msg-kind-system   { border-style: dashed; background: var(--offwhite); color: var(--grey-600); }

.msg-head {
  display: flex; gap: 10px; align-items: center;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.6px;
  margin-bottom: 2px;
}
.msg.msg-user .msg-head { color: rgba(255,255,255,0.7); }
.msg.msg-system .msg-head { color: var(--grey-600); }
.msg-author { font-weight: 700; }
.msg-kind { font-style: italic; }
.msg-time { margin-left: auto; }
.msg.msg-user .msg-time { color: rgba(255,255,255,0.6); }

.msg-body {
  font-size: 14px; line-height: 1.45; white-space: pre-wrap;
}

.msg-payload { margin-top: 6px; }
.payload-row {
  font-size: 12px; color: var(--grey-600);
  display: flex; gap: 8px; align-items: center;
}
.payload-row.warn {
  color: var(--yellow);
  background: var(--yellow-bg);
  border: 1px dashed var(--yellow);
  padding: 4px 8px; margin-top: 4px;
}
.msg.msg-user .payload-row { color: rgba(255,255,255,0.8); }
.payload-label {
  font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
}
.payload-mono { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; }
.payload-pills {
  margin-top: 6px;
  display: flex; flex-wrap: wrap; gap: 4px;
}
.payload-pill {
  font-size: 10px; padding: 2px 6px;
  border: 1px solid currentColor;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
}
.payload-list {
  margin-top: 6px;
  display: flex; flex-direction: column; gap: 4px;
}
.payload-item {
  font-size: 11px; padding: 4px 6px;
  border: 1px dashed var(--grey-400);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  word-break: break-word;
}

/* --- Prompt bar (Navigate input) --- */

.prompt-bar {
  grid-column: 1 / 2;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 14px 32px 22px;
  border-top: 1px solid var(--grey-200);
  background: var(--white);
  position: sticky; bottom: 0;
}
#prompt-input {
  font-family: inherit; font-size: 14px;
  padding: 12px 14px;
  border: 1px solid var(--black);
  resize: vertical; min-height: 56px;
  line-height: 1.4;
  background: var(--white);
}
#prompt-input:focus { outline: 2px solid var(--black); outline-offset: -2px; }
.navigate-btn {
  background: var(--black); color: var(--white);
  border: 1px solid var(--black);
  padding: 0 22px;
  font-family: inherit; font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer; min-width: 140px; align-self: stretch;
}
.navigate-btn:hover:not(:disabled) { background: var(--white); color: var(--black); }
.navigate-btn:disabled { opacity: 0.5; cursor: wait; }

/* --- Reasoning rail (right column, collapsible) --- */

.reasoning-rail {
  grid-row: 2 / -1;
  grid-column: 2 / 3;
  border-left: 1px solid var(--black);
  background: var(--offwhite);
  overflow-y: auto;
  padding: 8px;
}
.rail-section {
  border: 1px solid var(--black);
  background: var(--white);
  margin-bottom: 8px;
}
.rail-section > summary {
  padding: 10px 12px;
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer;
  border-bottom: 1px solid var(--grey-200);
}
.rail-section[open] > summary { background: var(--offwhite); }
.rail-body { padding: 10px 12px; }
.rail-block { margin-top: 14px; }
.rail-block h4 {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 8px; color: var(--grey-600);
}
.rail-action {
  background: var(--white); border: 1px solid var(--black);
  padding: 6px 10px; font-family: inherit; font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; cursor: pointer;
  margin-bottom: 8px;
}

/* Per-row condensed lists in the rail */
.rail-body .scenarios-pair { grid-template-columns: 1fr; }
.rail-body .scenario-card { padding: 8px 10px; }
.rail-body .scenario-card .scenario-header { font-size: 11px; }
.rail-body .scenario-body p { font-size: 12px; margin-bottom: 4px; }
.rail-body .heatmaps { display: flex; flex-direction: column; gap: 10px; }
.heat-block { border: 1px dashed var(--grey-400); padding: 8px; }
.heat-block h5 {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 6px;
}
.heat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.heat-cell {
  padding: 4px 6px;
  background: linear-gradient(to right, var(--green-bg) calc(var(--i,0) * 1%), transparent calc(var(--i,0) * 1%));
  font-size: 11px;
  border: 1px solid var(--grey-200);
}

.evidence-row {
  padding: 6px 0; border-bottom: 1px dashed var(--grey-200);
  font-size: 12px;
}
.evidence-head { display: flex; gap: 8px; align-items: baseline; font-size: 11px; }
.evidence-head .ev-id { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-weight: 700; }
.evidence-head .ev-kind { text-transform: uppercase; letter-spacing: 1px; color: var(--grey-600); font-size: 10px; }
.evidence-snippet { color: var(--grey-600); margin-top: 2px; line-height: 1.3; }

.cross-row {
  display: flex; gap: 8px; align-items: baseline;
  padding: 4px 0; border-bottom: 1px dashed var(--grey-200);
  font-size: 12px;
}
.cross-row .kind { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--grey-600); }
.cross-row .label { font-weight: 600; flex: 1; }

.audit-row {
  display: flex; gap: 10px; align-items: baseline;
  padding: 4px 0; border-bottom: 1px dashed var(--grey-200);
  font-size: 11px;
}
.audit-row .audit-action { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-weight: 600; }

/* --- Responsive --- */

@media (max-width: 980px) {
  main.auth-shell {
    grid-template-columns: 1fr;
    padding: 36px 24px;
    gap: 32px;
  }
  main.app-shell {
    grid-template-columns: 1fr;
    min-height: calc(100vh - 78px - 56px);
  }
  .sidebar { border-right: none; border-bottom: 1px solid var(--black); }
  .canvas-active:has(#reasoning-rail:not([hidden])) {
    grid-template-columns: 1fr;
  }
  .reasoning-rail {
    grid-column: 1 / -1; grid-row: auto;
    border-left: none; border-top: 1px solid var(--black);
  }
  .case-header { flex-direction: column; padding: 14px 18px; }
  .canvas-active .phase-strip { margin: 0 18px; }
  .chat-scroll, .prompt-bar { padding-left: 18px; padding-right: 18px; }
}

@media (max-width: 640px) {
  .phase-strip { grid-template-columns: 1fr; }
  .phase-strip .phase { border-right: none; border-bottom: 1px solid var(--black); }
  .phase-strip .phase:last-child { border-bottom: none; }
  .canvas-empty { padding: 40px 22px; }
  .canvas-empty h2 { font-size: 24px; }
  header.site { padding: 16px 18px; }
  main.auth-shell { padding: 28px 18px; }
  .auth-intro h1 { font-size: 28px; }
  .navigate-btn { min-width: 110px; }
}