:root {
  --background: #f3f5f7;
  --surface: #ffffff;
  --foreground: #1d2733;
  --muted: #637080;
  --border: #d8dee6;
  --primary: #315b8f;
  --primary-soft: #e8f0fb;
  --writing: #315b8f;
  --ai: #39736b;
  --friction: #a76616;
  --system: #89939f;
  --danger: #a13f3b;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  background: var(--background);
  color: var(--foreground);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
}

button, input, select { font: inherit; }

.viewer-header {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 52px);
}

.viewer-header-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

h1, h2, h3, p { margin-top: 0; }
h1 { font-size: 22px; margin-bottom: 0; }
h2 { font-size: 24px; margin-bottom: 6px; }
h3 { font-size: 17px; margin-bottom: 4px; }

.viewer-eyebrow {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  margin-bottom: 4px;
  text-transform: uppercase;
}

.back-link, .replace-file {
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 7px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  font-size: 13px;
  font-weight: 650;
  padding: 8px 12px;
  text-decoration: none;
}

.viewer-main {
  margin: 0 auto;
  max-width: 1320px;
  padding: 28px clamp(16px, 4vw, 48px) 56px;
}

.session-browser {
  background: var(--surface);
  border: 1px solid var(--border);
  display: grid;
  gap: 20px;
  margin: 2vh auto 0;
  max-width: 1080px;
  padding: 26px;
}
.session-browser > * { min-width: 0; }

.session-browser-heading {
  align-items: flex-start;
  display: flex;
  gap: 20px;
  justify-content: space-between;
}
.session-browser-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.session-list-panel { display: grid; gap: 14px; }

.session-browser-heading p, .section-heading p, .dashboard-meta, .timeline-count, #draftMeta {
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 0;
}

.secondary-button {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--foreground);
  cursor: pointer;
  font-size: 13px;
  font-weight: 650;
  padding: 8px 12px;
}

.secondary-button:disabled { cursor: not-allowed; opacity: .6; }

.session-toolbar {
  align-items: end;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.session-toolbar label { color: var(--muted); display: grid; font-size: 12px; gap: 5px; width: min(420px, 100%); }
.session-toolbar input {
  border: 1px solid var(--border);
  border-radius: 6px;
  min-height: 38px;
  padding: 7px 10px;
  width: 100%;
}
.session-status { color: var(--muted); font-size: 12px; margin: 0; }
.session-list { border-top: 1px solid var(--border); }
.session-row {
  align-items: center;
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(190px, 1.3fr) minmax(120px, .8fr) minmax(160px, 1fr) auto;
  padding: 14px 4px;
}
.session-primary strong { display: block; font-size: 14px; overflow-wrap: anywhere; }
.session-primary span, .session-detail, .session-updated { color: var(--muted); font-size: 12px; margin-top: 4px; }
.session-badges { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 6px; }
.session-badge { background: #eef1f4; color: var(--muted); font-size: 10px; padding: 3px 6px; }
.session-badge.active { background: #e5f4ec; color: #286447; }
.session-badge.submitted { background: var(--primary-soft); color: var(--primary); }
.session-open-button { white-space: nowrap; }
.dashboard-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.local-file-fallback { border-top: 1px solid var(--border); padding-top: 16px; }
.local-file-fallback summary { color: var(--muted); cursor: pointer; font-size: 13px; }
.behavior-overview { border-top: 1px solid var(--border); min-width: 0; padding-top: 20px; }
.friction-episode-analysis {
  --episode-blue: #567da5;
  --episode-purple: #9278ad;
  --episode-amber: #d49342;
  --episode-teal: #6aefe7;
  --episode-green: #5b9667;
  --traffic-green: #2f8f62;
  --traffic-yellow: #d99532;
  --traffic-red: #c95d5d;
  --traffic-neutral: #aab4bf;
  border-top: 1px solid var(--border);
  min-width: 0;
  padding-top: 20px;
}
.episode-toolbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 14px;
}
.episode-layout-group {
  background: #eef2f6;
  border: 1px solid #d9e0e8;
  border-radius: 9px;
  display: inline-flex;
  padding: 3px;
}
.episode-download-group { display: inline-flex; gap: 6px; }
.episode-segment-button {
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 650;
  padding: 7px 10px;
}
.episode-segment-button.active {
  background: #fff;
  box-shadow: 0 1px 4px rgba(29, 39, 51, .12);
  color: var(--foreground);
}
.episode-zoom-group { align-items: center; display: flex; flex-wrap: wrap; gap: 7px; }
.episode-zoom-group label {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 11px;
  gap: 8px;
}
.episode-zoom-group input { accent-color: var(--primary); width: min(220px, 34vw); }
.episode-zoom-group output {
  color: var(--foreground);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  min-width: 36px;
  text-align: center;
}
.episode-zoom-button { font-size: 18px; line-height: 1; min-width: 34px; padding: 7px 8px; }
.episode-zoom-hint { color: var(--muted); flex: 1 1 260px; font-size: 11px; margin: 0; text-align: right; }
.episode-summary { display: flex; flex-wrap: wrap; gap: 7px 18px; margin-top: 14px; }
.episode-summary span { color: var(--muted); font-size: 11px; }
.episode-summary strong { color: var(--foreground); font-size: 14px; }
.episode-legend {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 12px 0;
}
.episode-legend > span { align-items: center; color: var(--muted); display: inline-flex; font-size: 11px; gap: 6px; }
.episode-legend-mark {
  box-sizing: border-box;
  display: inline-block;
  height: 10px;
  position: relative;
  width: 10px;
}
.episode-legend-mark.source { background: var(--episode-blue); border-radius: 50%; }
.episode-legend-mark.candidate {
  background: var(--episode-purple);
  border-radius: 50%;
}
.episode-legend-mark.publish { background: var(--episode-amber); border-radius: 50%; }
.episode-legend-mark.seen { background: var(--episode-teal); border-radius: 50%; }
.episode-legend-mark.handle { background: var(--episode-green); border-radius: 50%; }
.episode-viewport {
  border: 1px solid #d9e0e8;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(36, 51, 68, .06);
  margin-top: 10px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding-bottom: 6px;
  scrollbar-color: #9aa7b4 #edf0f3;
  scrollbar-width: auto;
}
.episode-flow {
  --episode-source-width: 52px;
  --episode-timeline-width: 600px;
  --episode-rating-width: 122px;
  font-size: 11px;
  min-width: 100%;
  width: max-content;
}
.episode-flow.sources-expanded { --episode-source-width: 280px; }
.episode-participant { min-width: 100%; width: max-content; }
.episode-participant + .episode-participant { border-top: 8px solid #eef2f6; }
.episode-participant-overall {
  background: #f7f9fa;
  border-bottom: 1px solid #dce4e9;
  left: 0;
  padding: 7px 10px;
  position: sticky;
  width: 100%;
  z-index: 5;
}
.episode-participant-overall strong { font-size: 11px; }
.episode-flow-row {
  display: grid;
  grid-template-columns: var(--episode-source-width) var(--episode-timeline-width) var(--episode-rating-width) var(--episode-rating-width);
  min-height: 30px;
  min-width: 100%;
  width: max-content;
}
.episode-flow-row + .episode-flow-row { border-top: 1px solid #edf0f3; }
.episode-source-column,
.episode-rating-column {
  align-items: center;
  background: var(--surface);
  display: flex;
  min-width: 0;
  z-index: 3;
}
.episode-source-column {
  border-right: 1px solid #dfe5eb;
  left: 0;
  padding: 3px 7px;
  position: sticky;
}
.episode-rating-column {
  border-left: 1px solid #e2e7ec;
  padding: 3px 8px;
  position: relative;
}
.episode-flow.is-zoomed .episode-rating-column { position: sticky; }
.episode-flow.is-zoomed .episode-rating-column:nth-last-child(2) { right: var(--episode-rating-width); }
.episode-flow.is-zoomed .episode-rating-column:last-child { right: 0; }
button.episode-source-column,
button.episode-rating-column {
  border-bottom: 0;
  border-right: 0;
  border-top: 0;
  color: var(--foreground);
  cursor: pointer;
  font: inherit;
  text-align: left;
}
button.episode-source-column { border-left: 0; }
button.episode-source-column:hover,
button.episode-rating-column:hover { background: #f3f7fa; }
.episode-source-button {
  font-size: 11px;
  font-weight: 650;
  gap: 8px;
  line-height: 1.2;
  overflow: hidden;
  white-space: nowrap;
}
.episode-source-button > span:first-child { color: #536578; font-variant-numeric: tabular-nums; }
.episode-source-text { color: var(--foreground); display: none; font-size: 11px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; }
.episode-flow.sources-expanded .episode-source-text { display: inline; }
.episode-source-button small { color: var(--muted); display: none; font-size: 9px; margin-left: auto; }
.episode-flow.sources-expanded .episode-source-button small { display: inline; }
.episode-ruler-row {
  background: #f6f8fa;
  color: var(--muted);
  font-size: 11px;
  min-height: 28px;
}
.episode-ruler-row .episode-source-column,
.episode-ruler-row .episode-rating-column { background: #f6f8fa; font-weight: 650; }
.episode-ruler { background: #f6f8fa; position: relative; }
.episode-ruler > span {
  bottom: 2px;
  font-variant-numeric: tabular-nums;
  position: absolute;
  transform: translateX(-50%);
  white-space: nowrap;
}
.episode-ruler > span:first-child { transform: none; }
.episode-ruler > span:last-child { transform: translateX(-100%); }
.episode-ruler i {
  border-left: 1px solid #cbd3dc;
  display: block;
  height: 7px;
  left: 50%;
  position: absolute;
  top: -8px;
}
.episode-track {
  background-image: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(14.285714% - 1px),
    #eef1f4 calc(14.285714% - 1px),
    #eef1f4 14.285714%
  );
  min-width: 0;
  position: relative;
}
.episode-track-base,
.episode-segment {
  left: 0;
  position: absolute;
  top: 15px;
}
.episode-track-base { border-top: 1px solid #cfd7df; right: 0; }
.episode-segment { border-radius: 999px; height: 2px; transform: translateY(-1px); }
.episode-segment.source-to-candidate { background: var(--episode-blue); }
.episode-segment.candidate-to-publish { background: var(--episode-purple); }
.episode-segment.publish-to-handle { background: var(--episode-green); height: 3px; }
.episode-marker {
  appearance: none;
  background: currentColor;
  border: 0;
  box-sizing: border-box;
  cursor: pointer;
  height: 9px;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 10.5px;
  transform: translateX(-50%);
  width: 9px;
  z-index: 2;
}
.episode-marker:hover,
.episode-marker:focus-visible { outline: 3px solid rgba(49, 91, 143, .25); outline-offset: 2px; z-index: 4; }
.episode-marker.source { border-radius: 50%; color: var(--episode-blue); }
.episode-marker.source.approximate { background: #fff; border: 2px dashed var(--episode-blue); }
.episode-marker.candidate {
  border-radius: 50%;
  color: var(--episode-purple);
}
.episode-marker.publish {
  border-radius: 50%;
  color: var(--episode-amber);
  height: 9px;
  top: 10.5px;
  width: 9px;
}
.episode-marker.seen {
  background: var(--episode-teal);
  border-radius: 50%;
}
.episode-marker.handle { border-radius: 50%; color: var(--episode-green); }
.episode-marker.unresolved { background: #fff; border: 2px solid #7b8794; border-radius: 50%; }
.episode-rating-button {
  align-content: center;
  flex-wrap: wrap;
  gap: 0 6px;
  font-size: 11px;
  line-height: 1.2;
}
.episode-rating { align-items: center; display: inline-flex; gap: 6px; min-width: 0; }
.episode-rating > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.episode-traffic-light {
  background: var(--traffic-neutral);
  border: 2px solid rgba(255, 255, 255, .85);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(51, 65, 80, .14);
  display: inline-block;
  flex: 0 0 auto;
  height: 8px;
  width: 8px;
}
.episode-traffic-light.green { background: var(--traffic-green); }
.episode-traffic-light.yellow { background: var(--traffic-yellow); }
.episode-traffic-light.red { background: var(--traffic-red); }
.episode-traffic-light.neutral { background: var(--traffic-neutral); }
.episode-detail {
  background: #fff;
  border: 0;
  border-radius: 14px;
  box-shadow: 0 24px 70px rgba(25, 38, 52, .22);
  color: var(--foreground);
  max-height: min(760px, 86vh);
  max-width: min(720px, 90vw);
  padding: 22px;
  width: 100%;
}
.episode-detail::backdrop { background: rgba(25, 37, 50, .38); backdrop-filter: blur(3px); }
.episode-detail-heading { align-items: center; display: flex; justify-content: space-between; }
.episode-detail dl {
  display: grid;
  font-size: 12px;
  gap: 8px 12px;
  grid-template-columns: 74px 1fr;
  line-height: 1.55;
  margin: 12px 0 0;
}
.episode-detail dt { color: var(--muted); font-weight: 650; }
.episode-detail dd { margin: 0; overflow-wrap: anywhere; }
.sr-only {
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}
.behavior-controls { align-items: end; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.behavior-controls label { color: var(--muted); display: grid; font-size: 11px; gap: 4px; }
.behavior-controls input, .behavior-controls select {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 5px;
  min-height: 34px;
  padding: 5px 8px;
}
.participant-filter { position: relative; }
.participant-filter > summary {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--foreground);
  cursor: pointer;
  font-size: 12px;
  list-style: none;
  min-height: 34px;
  min-width: 180px;
  padding: 8px 28px 7px 9px;
  position: relative;
}
.participant-filter > summary::after { content: "▾"; position: absolute; right: 9px; }
.participant-filter[open] > summary::after { content: "▴"; }
.participant-filter-panel {
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 8px 22px rgba(31, 42, 55, .12);
  left: 0;
  max-height: 320px;
  min-width: 280px;
  overflow: auto;
  padding: 12px;
  position: absolute;
  top: calc(100% + 5px);
  z-index: 10;
}
.participant-filter-actions { border-bottom: 1px solid var(--border); display: flex; gap: 8px; padding-bottom: 9px; }
.text-button { background: none; border: 0; color: var(--primary); cursor: pointer; font-size: 11px; padding: 2px; }
.participant-options { display: grid; gap: 7px; grid-template-columns: repeat(2, minmax(110px, 1fr)); padding-top: 10px; }
.participant-option { align-items: center; color: var(--foreground) !important; display: flex !important; font-size: 12px !important; gap: 6px !important; }
.participant-option input { min-height: auto; width: auto; }
.behavior-legend { display: grid; gap: 9px; margin: 14px 0; }
.behavior-legend-group { align-items: center; display: flex; flex-wrap: wrap; gap: 7px 14px; }
.behavior-legend-group > strong { color: var(--foreground); font-size: 11px; min-width: 82px; }
.behavior-legend-filter {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  font-size: 11px;
  gap: 6px;
  padding: 4px 6px;
}
.behavior-legend-filter:hover { background: #f5f7fa; border-color: var(--border); }
.behavior-legend-filter input { accent-color: var(--primary); margin: 0 1px 0 0; }
.behavior-legend-filter:has(input:not(:checked)) { opacity: .48; text-decoration: line-through; }
.behavior-legend-filter span { align-items: center; display: inline-flex; }
.behavior-sequence-chart { border: 1px solid var(--border); margin-top: 12px; overflow-x: auto; padding: 12px; }
.behavior-chart-inner { min-width: 900px; }
.behavior-alignment-header { height: 26px; margin-left: 194px; position: relative; }
.behavior-alignment-label {
  align-items: center;
  background: #fff;
  border: 1px solid #667085;
  border-radius: 4px;
  color: #344054;
  display: inline-flex;
  font-size: 9px;
  font-weight: 700;
  gap: 5px;
  padding: 3px 6px;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 3;
}
.behavior-alignment-label.edge-left { transform: none; }
.behavior-alignment-label.edge-right { transform: translateX(-100%); }
.behavior-alignment-label i { border-left: 1px dashed #667085; height: 12px; }
.behavior-axis { color: var(--muted); font-size: 9px; height: 24px; margin-left: 194px; position: relative; }
.behavior-axis span { font-weight: 500; position: absolute; top: 1px; transform: translateX(-50%); white-space: nowrap; }
.behavior-session-row { border-bottom: 1px solid #aeb7c1; display: grid; grid-template-columns: 120px 74px 1fr; min-height: 94px; }
.behavior-session-label { align-self: center; font-size: 12px; padding-right: 10px; }
.behavior-session-label strong { display: block; overflow-wrap: anywhere; }
.behavior-session-label span { color: var(--muted); display: block; font-size: 10px; margin-top: 3px; }
.behavior-row-labels {
  color: #7c8794;
  display: grid;
  font-size: 8px;
  font-weight: 650;
  grid-template-rows: repeat(4, 23px);
  letter-spacing: .025em;
}
.behavior-row-labels span { align-items: center; display: flex; }
.behavior-lanes { position: relative; }
.behavior-alignment-guide {
  border-left: 2px dashed #667085;
  bottom: 0;
  pointer-events: none;
  position: absolute;
  top: 0;
  z-index: 1;
}
.behavior-lane-line { border-top: 1px dashed #c9cfd6; left: 0; position: absolute; right: 0; }
.behavior-lane-line.settings { top: 13px; }
.behavior-lane-line.writing { top: 36px; }
.behavior-lane-line.ai { top: 59px; }
.behavior-lane-line.friction { top: 82px; }
.behavior-marker {
  border: 0;
  border-radius: 1px;
  cursor: pointer;
  height: 15px;
  padding: 0;
  position: absolute;
  transform: translate(-50%, -50%);
  width: 4px;
  z-index: 2;
}
.behavior-marker.settings { top: 13px; }
.behavior-marker.writing { top: 36px; }
.behavior-marker.ai { top: 59px; }
.behavior-marker.friction { top: 82px; }
.behavior-session-row.merged { min-height: 46px; }
.behavior-session-row.merged .behavior-row-labels { grid-template-rows: 46px; }
.behavior-session-row.merged .behavior-lane-line.merged { top: 23px; }
.behavior-session-row.merged .behavior-marker { top: 23px; }
.legend-marker { border-radius: 1px; display: inline-block; flex: 0 0 auto; height: 14px; width: 4px; }

/* User-specified palette: writing uses pink, friction uses green. */
.behavior-marker.event-settings-profile, .legend-marker.event-settings-profile { background: #ffb33f; }
.behavior-marker.event-settings-prompt, .legend-marker.event-settings-prompt { background: #ffd99f; }
.behavior-marker.event-writing-edit, .legend-marker.event-writing-edit { background: #ffc6de; }
.behavior-marker.event-writing-outline, .legend-marker.event-writing-outline { background: #ff87b9; }
.behavior-marker.event-writing-structure, .legend-marker.event-writing-structure { background: #f05c9a; }
.behavior-marker.event-ai-request, .legend-marker.event-ai-request { background: #7fa0ff; }
.behavior-marker.event-ai-result, .legend-marker.event-ai-result { background: #dae3ff; }
.behavior-marker.event-friction-published, .legend-marker.event-friction-published { background: #e1f886; }
.behavior-marker.event-friction-seen, .legend-marker.event-friction-seen { background: #cdf336; }
.behavior-marker.event-friction-resolved, .legend-marker.event-friction-resolved { background: #b6e00e; }
.behavior-marker.event-other, .legend-marker.event-other { background: #9aa3ad; }
.event-codebook { border-top: 1px solid var(--border); margin-top: 18px; padding-top: 14px; }
.event-codebook > summary { color: var(--primary); cursor: pointer; font-size: 13px; font-weight: 650; }
.event-codebook > p { color: var(--muted); font-size: 12px; margin: 9px 0 0; }
.event-codebook .data-table { min-width: 850px; }
.event-codebook code { font-size: 11px; }
.friction-window-summary { background: #fff6e8; border-left: 3px solid var(--friction); color: #6f4a17; font-size: 12px; line-height: 1.5; margin: 14px 0 0; padding: 9px 11px; }
.event-relative { color: var(--friction); font-size: 11px; font-weight: 650; margin-left: 6px; }

.drop-zone {
  align-items: center;
  background: #f8fafc;
  border: 2px dashed #9cabbc;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 7px;
  justify-content: center;
  min-height: 180px;
  margin-top: 14px;
  padding: 24px;
  text-align: center;
}

.drop-zone.dragging { background: var(--primary-soft); border-color: var(--primary); }
.drop-zone span { color: var(--muted); font-size: 13px; }
.drop-zone input, .replace-file input { display: none; }
.load-error { color: var(--danger) !important; }

.dashboard-heading, .section-heading {
  align-items: flex-start;
  display: flex;
  gap: 20px;
  justify-content: space-between;
}

.dashboard-heading { margin-bottom: 20px; }

.summary-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 16px;
}

.summary-card, .dashboard-section {
  background: var(--surface);
  border: 1px solid var(--border);
}

.summary-card { padding: 17px; }
.summary-label { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.summary-value { font-size: 27px; font-weight: 700; line-height: 1.1; }
.summary-note { color: var(--muted); font-size: 12px; margin: 7px 0 0; }

.dashboard-section { margin-bottom: 16px; padding: 20px; }
.two-column { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
.two-column .dashboard-section { margin-bottom: 0; }
.two-column { margin-bottom: 16px; }

.legend { display: flex; flex-wrap: wrap; gap: 12px; }
.legend span { align-items: center; color: var(--muted); display: flex; font-size: 12px; gap: 5px; }
.legend i { display: block; height: 9px; width: 9px; }
.legend-writing { background: var(--writing); }
.legend-ai { background: var(--ai); }
.legend-friction { background: var(--friction); }
.legend-system { background: var(--system); }

.activity-chart {
  align-items: end;
  display: grid;
  gap: 3px;
  grid-template-columns: repeat(20, 1fr);
  height: 150px;
  margin-top: 22px;
}

.activity-bin { display: flex; flex-direction: column-reverse; height: 100%; justify-content: flex-start; min-width: 0; }
.activity-segment { min-height: 2px; width: 100%; }
.category-writing { background: var(--writing); }
.category-ai { background: var(--ai); }
.category-friction { background: var(--friction); }
.category-system { background: var(--system); }
.activity-axis { color: var(--muted); display: flex; font-size: 11px; justify-content: space-between; margin-top: 7px; }

.stage-summary, .decision-summary { display: grid; gap: 10px; margin-top: 18px; }
.progress-row { align-items: center; display: grid; gap: 10px; grid-template-columns: minmax(125px, .8fr) 2fr auto; }
.progress-label, .progress-value { font-size: 13px; }
.progress-track { background: #e8ecf0; height: 9px; overflow: hidden; }
.progress-fill { background: var(--primary); height: 100%; }
.decision-row { align-items: baseline; border-bottom: 1px solid var(--border); display: flex; gap: 12px; justify-content: space-between; padding: 8px 0; }
.decision-row:last-child { border-bottom: 0; }
.decision-row span { color: var(--muted); font-size: 13px; }
.decision-row strong { font-size: 16px; }

.chat-transcript { display: grid; gap: 10px; margin-top: 18px; }
.chat-entry { border-left: 3px solid var(--border); padding: 5px 0 5px 12px; }
.chat-entry.user { border-left-color: var(--primary); }
.chat-entry.assistant { border-left-color: var(--ai); }
.chat-entry-header { color: var(--muted); display: flex; font-size: 12px; gap: 10px; margin-bottom: 4px; }
.chat-entry p { line-height: 1.55; margin-bottom: 0; white-space: pre-wrap; }
.empty-message { color: var(--muted); padding: 14px 0; }

.table-wrap { overflow-x: auto; }
.data-table { border-collapse: collapse; margin-top: 14px; min-width: 760px; width: 100%; }
.data-table th, .data-table td { border-bottom: 1px solid var(--border); font-size: 13px; padding: 10px 8px; text-align: left; vertical-align: top; }
.data-table th { color: var(--muted); font-weight: 650; }

.timeline-heading { align-items: end; }
.timeline-controls { align-items: end; display: flex; flex-wrap: wrap; gap: 8px; }
.timeline-controls label { color: var(--muted); display: grid; font-size: 11px; gap: 3px; }
.timeline-controls select, .timeline-controls input { background: #fff; border: 1px solid var(--border); border-radius: 5px; color: var(--foreground); max-width: 190px; min-height: 34px; padding: 5px 8px; }
.timeline-count { font-size: 12px; margin-top: 12px; }
.event-timeline { margin-top: 10px; }
.event-row { border-top: 1px solid var(--border); }
.event-row.focused-event { background: #fff2c9; box-shadow: inset 4px 0 0 #dc8e18; padding-left: 8px; }
.event-row summary { align-items: center; cursor: pointer; display: grid; gap: 9px; grid-template-columns: 82px 86px minmax(200px, 1fr) minmax(160px, 1.4fr); list-style: none; padding: 10px 0; }
.event-row summary::-webkit-details-marker { display: none; }
.event-time, .event-actor, .event-summary { color: var(--muted); font-size: 12px; }
.event-type { font-size: 13px; font-weight: 650; overflow-wrap: anywhere; }
.event-dot { display: inline-block; height: 8px; margin-right: 6px; width: 8px; }
.event-payload { background: #f6f8fa; border: 1px solid var(--border); font-size: 12px; line-height: 1.55; margin: 0 0 10px 177px; max-height: 320px; overflow: auto; padding: 12px; white-space: pre-wrap; }
.final-draft { background: #fafbfc; border-left: 3px solid var(--primary); line-height: 1.75; margin-top: 16px; padding: 16px; white-space: pre-wrap; }

@media (max-width: 900px) {
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .two-column { grid-template-columns: 1fr; }
  .session-row { grid-template-columns: minmax(180px, 1fr) minmax(120px, .7fr) auto; }
  .session-updated { display: none; }
  .event-row summary { grid-template-columns: 72px 76px 1fr; }
  .event-summary { display: none; }
  .event-payload { margin-left: 0; }
}

@media (max-width: 560px) {
  .viewer-header { align-items: flex-start; gap: 12px; }
  .summary-grid { grid-template-columns: 1fr; }
  .dashboard-heading, .section-heading { display: block; }
  .session-browser-heading, .session-toolbar { align-items: stretch; display: grid; }
  .behavior-controls { align-items: stretch; display: grid; }
  .episode-toolbar { align-items: stretch; display: grid; }
  .episode-zoom-group input { width: 130px; }
  .episode-flow {
    --episode-source-width: 48px;
    --episode-rating-width: 104px;
  }
  .episode-flow.sources-expanded { --episode-source-width: 220px; }
  .episode-source-button,
  .episode-rating-button { font-size: 11px; }
  .episode-detail dl { grid-template-columns: 1fr; }
  .episode-detail dd { margin-bottom: 5px; }
  .session-row { grid-template-columns: 1fr auto; }
  .session-detail { display: none; }
  .dashboard-actions { justify-content: flex-start; margin-top: 12px; }
  .replace-file, .legend, .timeline-controls { margin-top: 12px; }
  .progress-row { grid-template-columns: 1fr auto; }
  .progress-track { grid-column: 1 / -1; grid-row: 2; }
  .event-row summary { grid-template-columns: 70px 1fr; }
  .event-actor { display: none; }
}