/* Mosaic build section ,  scroll-driven step-by-step assembly with paired feature demos.
   Each row introduces one icon tile + its demo. The mosaic on the left is cumulative,
   so by the final row it forms the complete Mosaic logo. */

.build {
  background: var(--paper);
  padding: 96px 0 120px;
  border-top: 1px solid var(--border2);
  font-family: system-ui;
}
.build-intro {
  max-width: 760px;
  margin: 0 auto 64px;
  padding: 0 32px;
  text-align: center;
}
.build-intro .eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--violet);
  margin: 0 0 16px;
}
.build-intro h2 {
  font-family: Georgia, serif;
  font-size: clamp(40px, 4.4vw, 60px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 16px;
}
.build-intro p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink2);
  margin: 0;
}

.build-row {
  max-width: 1320px;
  margin: 0 auto;
  padding: 140px 32px;
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.42fr);
  gap: 64px;
  align-items: center;
}
.build-row.reverse .build-left  { order: 2; }
.build-row.reverse .build-right { order: 1; }
.build-row.reverse {
  /* Flip column widths so the order-swapped demo (now in slot 1) still
     gets the wide column, keeps all four demos identical in size. */
  grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.78fr);
}
@media (max-width: 880px) {
  .build-row { grid-template-columns: 1fr; gap: 36px; padding: 96px 24px; }
  .build-row.reverse .build-left { order: 1; }
  .build-row.reverse .build-right { order: 2; }
}

/* ── Left column: stage + caption ── */
.build-left { display: flex; flex-direction: column; align-items: flex-start; gap: 36px; }
@media (max-width: 880px) {
  .build-left { align-items: center; text-align: center; }
}
.build-stage {
  position: relative;
  width: 240px; height: 240px;
  flex-shrink: 0;
  --tile: 36px;
}
.build-tile {
  position: absolute;
  top: 50%; left: 50%;
  width: var(--tile);
  height: var(--tile);
  margin: calc(var(--tile) * -0.5) 0 0 calc(var(--tile) * -0.5);
  border-radius: calc(var(--tile) * 0.25);
  background: rgba(91, 79, 207, var(--op, 1));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  /* Resting (pre-reveal) state ,  invisible + scattered + scaled down. The
     tile fades in WHILE it travels to its final spot, so the formation
     materializes piece by piece rather than starting fully loaded. The
     violet shade is constant; only element-opacity animates. */
  opacity: 0;
  transform: translate(calc(var(--tx) + var(--sx, 0px)), calc(var(--ty) + var(--sy, 0px)))
             scale(0.65) rotate(var(--sr, 0deg));
  /* Apple ease-out-quint, slow + smooth. */
  transition:
    opacity 900ms ease-out var(--delay, 0ms),
    transform 2000ms cubic-bezier(0.32, 0.72, 0, 1) var(--delay, 0ms);
  will-change: transform, opacity;
  pointer-events: none;
}
.build-tile.in {
  opacity: 1;
  transform: translate(var(--tx), var(--ty)) scale(1) rotate(0);
}
/* Carried-over tiles from earlier steps ,  already in final position when the
   row enters the viewport, with no entry transition. They are the existing
   structure that the FRESH tiles snap into. */
.build-tile.persist {
  transition: none;
}
.build-tile svg { display: block; }

/* Once landed, fresh tiles breathe gently with a tiny scale pulse ,  no
   opacity change so the violet shade stays constant. Offset per tile via
   --breath-delay so they don't sync into a single heartbeat. */
.build-tile.in.fresh {
  animation: build-tile-breathe 4.2s ease-in-out infinite;
  animation-delay: calc(1600ms + var(--breath-delay, 0ms));
}
.build-tile.in.fresh.build-tile--icon,
.build-tile.in.fresh.build-tile--center {
  animation-duration: 3.6s;
}
@keyframes build-tile-breathe {
  0%, 100% {
    transform: translate(var(--tx), var(--ty)) scale(1) rotate(0);
  }
  50% {
    transform: translate(var(--tx), var(--ty)) scale(1.045) rotate(0);
  }
}

.build-caption { max-width: 360px; }
.build-step {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 14px;
}
.build-step .num { display: none; }
.build-caption h3 {
  font-family: Georgia, serif;
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 400;
  line-height: 1.10;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 14px;
}
.build-caption p {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink2);
  margin: 0;
}

/* ── Right column: demo frame ── */
.build-demo {
  position: relative;
  width: 100%;
  /* Real webpages are landscape ,  keep the demo at a realistic browser
     window ratio so it doesn't squish into a portrait box. */
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  background: var(--paper);
  border: 1px solid var(--border2);
  box-shadow:
    0 30px 70px rgba(15,14,17,0.10),
    0 2px 6px rgba(15,14,17,0.04);
  overflow: hidden;
  /* Demos are visible by default. Rows that have been seen get a subtle
     lift+settle when they enter the viewport (driven by .in-view), but if
     the observer hasn't fired yet for any reason, the demo still renders. */
  opacity: 1;
  transform: translateY(0) scale(1);
  transition:
    opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1) 240ms,
    transform 1500ms cubic-bezier(0.22, 1, 0.36, 1) 240ms;
}
/* Demo frame is always visible ,  the per-row animation is reserved
   for the tile mosaic on the left side, so the right side reads as a
   stable screenshot the user can study while the tiles assemble in. */
.build-row.queued .build-demo,
.build-row.in-view .build-demo {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.build-demo .chrome {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border2);
  background: rgba(242,240,235,0.65);
}
.build-demo .chrome .dots { display: flex; gap: 5px; }
.build-demo .chrome .dots i {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(15,14,17,0.10);
}
.build-demo .chrome .title {
  font-size: 11px;
  color: var(--ink3);
}
.build-demo .chrome .chrome-sync,
.build-demo .chrome .chrome-ext {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.build-demo .chrome .sync-pill,
.build-demo .chrome .ext-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 9.5px;
  font-weight: 500;
  color: var(--ink2);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border2);
  border-radius: 3px;
  padding: 2px 6px;
}
.build-demo .chrome .ext-pill {
  color: var(--violet);
  background: var(--violet-light);
  border-color: transparent;
}
.build-demo .chrome .ext-pill svg { display: block; }
.build-demo .body {
  position: absolute;
  inset: 41px 0 0;
  overflow: hidden;
}
.build-demo .live {
  position: absolute;
  top: 14px; right: 14px;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink3);
}
.build-demo .live::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #e74c3c;
  animation: live-pulse 1.4s ease-in-out infinite;
}
@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}

/* ── Mock: References ── */
.mock-refs { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); height: 100%; }
.mock-refs-list {
  border-right: 1px solid var(--border2);
  padding: 12px 0;
  overflow: hidden;
}
.mock-search {
  display: flex; align-items: center; gap: 8px;
  margin: 0 12px 12px;
  padding: 7px 10px;
  border: 1px solid var(--border2);
  border-radius: 6px;
  background: var(--paper);
  font-size: 11.5px;
  color: var(--ink3);
}
.mock-search i {
  width: 12px; height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  position: relative;
}
.mock-search i::after {
  content: ''; position: absolute;
  width: 5px; height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
  right: -4px; bottom: -1px;
}
.mock-refs-row {
  padding: 9px 12px;
  border-left: 2px solid transparent;
  cursor: default;
  position: relative;
}
.mock-refs-row.active {
  background: rgba(237,233,255,0.55);
  border-left-color: var(--violet);
}
.mock-refs-row .meta { display: flex; align-items: center; gap: 6px; margin-bottom: 3px; }
.mock-badge { font-size: 9px; font-weight: 600; letter-spacing: 0.04em; padding: 1px 6px; border-radius: 3px; }
.mock-badge--pubmed { background: #e0f5ee; color: #1a9e75; }
.mock-badge--arxiv  { background: #fdf3e3; color: #b97318; }
.mock-badge--key    { background: var(--violet-light); color: var(--violet); }
.mock-refs-row .ttl {
  font-size: 12px; font-weight: 500; color: var(--ink);
  line-height: 1.32;
  margin-bottom: 3px;
  display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.mock-refs-row .sub { font-size: 10px; color: var(--ink3); }
.mock-refs-detail { padding: 14px; overflow: hidden; }
.mock-refs-detail h4 {
  font-family: Georgia, serif;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 6px;
}
.mock-refs-detail .sub { font-size: 10.5px; color: var(--ink3); margin-bottom: 12px; }
.mock-section-label {
  font-size: 9px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink3);
  margin: 10px 0 4px;
}
.mock-refs-detail .abs {
  font-size: 11px; line-height: 1.55;
  color: var(--ink2);
}
.mock-refs-detail .abs mark {
  background: rgba(185,115,24,0.18);
  border-bottom: 1.5px solid #b97318;
  color: var(--ink);
  padding: 0 2px;
}
.mock-tag {
  display: inline-block;
  background: var(--violet-light);
  color: var(--violet);
  font-size: 9.5px;
  padding: 1px 6px;
  border-radius: 3px;
  margin-right: 4px;
}

/* ── Mock: Writing editor ── */
.mock-writing { padding: 22px 26px; overflow: hidden; }
.mock-writing h4 {
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}
.mock-writing .doc-meta { font-size: 10.5px; color: var(--ink3); margin-bottom: 14px; }
.mock-writing .doc-section {
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink3);
  margin: 14px 0 6px;
  position: relative;
}
.mock-writing .doc-section::after {
  content: ''; position: absolute;
  left: 130px; right: 0; top: 50%;
  height: 1px; background: var(--border2);
}
.mock-writing p {
  font-size: 12.5px; line-height: 1.78;
  color: var(--ink2);
  margin: 0 0 9px;
}
.mock-cite {
  display: inline-block;
  background: var(--violet-light);
  color: var(--violet);
  padding: 0 5px;
  border-radius: 3px;
  font-size: 10.5px;
  font-weight: 500;
}
.mock-caret {
  display: inline-block;
  width: 2px; height: 1em;
  background: var(--ink);
  vertical-align: text-bottom;
  animation: mock-blink 1s steps(2) infinite;
}
@keyframes mock-blink { 50% { opacity: 0; } }
.mock-ai-chip {
  margin-top: 12px;
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--violet-light);
  color: var(--violet);
  font-size: 11px; font-weight: 500;
  padding: 5px 12px;
  border-radius: 999px;
}
.mock-ai-chip::before { content: '✦'; }

/* ── Mock: Documents (PDF + annotations) ── */
.mock-docs { display: grid; grid-template-columns: 1fr minmax(0, 180px); height: 100%; }
.mock-pdf {
  padding: 16px 18px;
  background: var(--paper);
  overflow: hidden;
  border-right: 1px solid var(--border2);
}
.mock-pdf h5 {
  font-family: Georgia, serif;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.25;
  margin: 0 0 6px;
  color: var(--ink);
}
.mock-pdf .meta { font-size: 9.5px; color: var(--ink3); margin-bottom: 12px; }
.mock-pdf .line {
  height: 6px;
  background: rgba(15,14,17,0.07);
  border-radius: 3px;
  margin-bottom: 7px;
}
.mock-pdf .line.short { width: 65%; }
.mock-pdf .line.hl { background: rgba(185,115,24,0.32); }
.mock-pdf .spacer { height: 10px; }
.mock-annot {
  padding: 12px;
  background: var(--paper2);
  overflow: hidden;
}
.mock-annot .label {
  font-size: 9.5px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 8px;
}
.mock-annot .note {
  background: var(--paper);
  border: 1px solid var(--border2);
  border-left: 3px solid #b97318;
  border-radius: 0 4px 4px 0;
  padding: 8px 10px;
  margin-bottom: 8px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--ink2);
}
.mock-annot .note em {
  font-style: italic;
  color: var(--ink3);
  font-size: 10px;
  display: block;
  margin-top: 4px;
}

/* ── Mock: Assistant (browser extension over a doc) ── */
.mock-assistant {
  position: relative;
  height: 100%;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.0) 0%, rgba(15,14,17,0.04) 100%),
    repeating-linear-gradient(180deg, transparent 0 22px, rgba(15,14,17,0.02) 22px 23px);
  overflow: hidden;
}
.mock-asst-doc {
  padding: 18px 22px 18px 28px;
  max-width: 70%;
  position: relative;
  z-index: 1;
  /* Slightly desaturated/faded so the popup pops */
  opacity: 0.65;
}
.mock-asst-doc h5 {
  font-family: Georgia, serif;
  font-size: 16px;
  font-weight: 400;
  color: var(--ink);
  margin: 0 0 4px;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.mock-asst-doc .meta {
  font-size: 9.5px;
  color: var(--ink3);
  margin-bottom: 14px;
}
.mock-asst-doc p {
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink2);
  margin: 0 0 8px;
  position: relative;
}
.mock-asst-doc p:last-of-type {
  /* Selected paragraph ,  the claim being cited */
  background: rgba(91,79,207,0.08);
  border-left: 2px solid var(--violet);
  padding: 4px 8px;
  margin-left: -10px;
  border-radius: 0 4px 4px 0;
}
.asst-anchor {
  display: inline-block;
  width: 2px; height: 1em;
  background: var(--ink);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: mock-blink 1s steps(2) infinite;
}

.mock-asst-pop {
  position: absolute;
  right: 18px;
  top: 38px;
  width: 260px;
  background: var(--paper);
  border: 1px solid rgba(15,14,17,0.10);
  border-radius: 8px;
  box-shadow:
    0 22px 50px rgba(15,14,17,0.16),
    0 2px 6px rgba(15,14,17,0.06);
  padding: 12px;
  z-index: 2;
  font-size: 11px;
  animation: asst-pop-in 480ms cubic-bezier(0.22, 1, 0.36, 1) 240ms both;
}
@keyframes asst-pop-in {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.mock-asst-pop::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 22px;
  width: 12px; height: 12px;
  background: var(--paper);
  border-left: 1px solid rgba(15,14,17,0.10);
  border-bottom: 1px solid rgba(15,14,17,0.10);
  transform: rotate(45deg);
}
.mock-asst-pop .asst-head {
  display: flex; align-items: center; gap: 7px;
  margin-bottom: 10px;
}
.mock-asst-pop .asst-logo { display: inline-flex; flex-shrink: 0; }
.mock-asst-pop .asst-title {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.mock-asst-pop .asst-badge {
  margin-left: auto;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--violet-light);
  color: var(--violet);
  padding: 2px 6px;
  border-radius: 3px;
}
.mock-asst-pop .asst-claim {
  font-size: 10.5px;
  color: var(--ink3);
  line-height: 1.5;
  margin-bottom: 10px;
}
.mock-asst-pop .asst-opt {
  border: 1px solid var(--border2);
  border-radius: 5px;
  padding: 8px 9px;
  margin-bottom: 6px;
  cursor: default;
}
.mock-asst-pop .asst-opt.active {
  border-color: rgba(91,79,207,0.30);
  background: rgba(237,233,255,0.45);
}
.mock-asst-pop .asst-src {
  font-size: 9.5px;
  color: var(--ink3);
  margin-bottom: 2px;
}
.mock-asst-pop .asst-ttl {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.mock-asst-pop .asst-reason {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9.5px;
  color: var(--ink3);
}
.mock-asst-pop .asst-match-bar {
  display: inline-block;
  width: 32px; height: 3px;
  border-radius: 2px;
  background: var(--paper3, rgba(15,14,17,0.10));
  overflow: hidden;
  flex-shrink: 0;
}
.mock-asst-pop .asst-match-bar > span {
  display: block;
  height: 100%;
  background: var(--violet);
  border-radius: 2px;
}
.mock-asst-pop .asst-actions {
  display: flex; gap: 6px;
  margin-top: 8px;
}
.mock-asst-pop .asst-btn {
  flex: 1;
  text-align: center;
  font-size: 10.5px;
  font-weight: 500;
  padding: 6px 8px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  color: var(--ink2);
  background: rgba(255,255,255,0.7);
}
/* ─────────────────────────────────────────────────────────────────
   App-panel demos, mirror mosaic/src/components/panels/*
   1:1 in structure and styling. Each build-demo--app frame renders
   the actual Mosaic app surface (no fake OS chrome).
   ───────────────────────────────────────────────────────────────── */

:is(.build-demo.build-demo--app, .workspace--overview) {
  --ap-ink: var(--ink);
  --ap-ink2: var(--ink2);
  --ap-ink3: #7a7590;
  --ap-violet: var(--violet);
  --ap-violet-light: var(--violet-light);
  --ap-border: rgba(15,14,17,0.10);
  --ap-border2: rgba(15,14,17,0.06);
  --ap-paper: var(--paper);
  --ap-paper2: rgba(242,240,235,0.50);
}
:is(.build-demo.build-demo--app, .workspace--overview) .body,
:is(.build-demo.build-demo--app, .workspace--overview) .chrome,
:is(.build-demo.build-demo--app, .workspace--overview) .live { display: none; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel {
  position: absolute;
  inset: 0;
  display: flex; flex-direction: column;
  background: var(--ap-paper);
  font-family: system-ui;
  color: var(--ap-ink);
  overflow: hidden;
}

/* Shared panel chrome, matches `.panel-header`, `.panel-tabs`,
   `.panel-title`, `.tb-btn primary`, `.tab.active` from globals.css */
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel-header {
  display: flex; align-items: center; justify-content: flex-end;
  padding: 8px 20px;
  border-bottom: 1px solid var(--ap-border2);
  background: rgba(250,249,246,0.76);
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel-header-right {
  display: inline-flex; align-items: center; gap: 6px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel-title {
  display: none;
  font-family: Georgia, serif;
  font-size: 19px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ap-ink);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-tb-btn {
  min-height: 28px;
  font-size: 11px;
  font-weight: 500;
  padding: 0 11px;
  border-radius: 2px;
  border: 1px solid var(--ap-border);
  background: rgba(255,255,255,0.72);
  color: var(--ap-ink2);
  cursor: pointer;
  font-family: var(--sans);
  line-height: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-tb-btn-primary {
  display: inline-flex; align-items: center; gap: 5px;
  min-height: 28px;
  font-size: 11px;
  font-weight: 500;
  padding: 0 11px;
  border-radius: 2px;
  border: 1px solid transparent;
  background: var(--ap-violet);
  color: #fff;
  cursor: pointer;
  font-family: var(--sans);
  line-height: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-tb-btn-primary .plus { font-size: 13px; line-height: 1; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-tb-btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border: 1px solid var(--ap-border);
  background: rgba(255,255,255,0.72);
  color: var(--ap-ink2);
  font-size: 14px;
  border-radius: 2px;
}

:is(.build-demo.build-demo--app, .workspace--overview) .app-panel-tabs {
  display: flex; gap: 0;
  padding: 0 20px;
  border-bottom: 1px solid var(--ap-border2);
  background: rgba(250,249,246,0.76);
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-tab {
  padding: 8px 10px 8px;
  font-size: 11px;
  color: var(--ap-ink3);
  border: 0; background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-weight: 500;
  font-family: var(--sans);
  cursor: pointer;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-tab.active {
  color: var(--ap-violet);
  border-bottom-color: var(--ap-violet);
}

/* ── Library / References row ── */
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel-toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 20px;
  border-bottom: 1px solid var(--ap-border2);
  background: var(--ap-paper);
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-search {
  flex: 1;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 10px;
  border: 1px solid var(--ap-border);
  border-radius: 2px;
  background: rgba(255,255,255,0.72);
  font-size: 11px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-view-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border: 1px solid var(--ap-border);
  border-radius: 2px;
  background: rgba(255,255,255,0.72);
  color: var(--ap-ink3);
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-toolbar-sort {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--ap-border);
  border-radius: 2px;
  background: rgba(255,255,255,0.72);
  font-size: 11px;
  color: var(--ap-ink2);
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-sort-caret {
  font-size: 9px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-library-split {
  display: grid; grid-template-columns: minmax(0, 1fr) 186px;
  flex: 1; min-height: 0;
  border-top: 1px solid var(--ap-border2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-library-list {
  overflow: hidden;
  padding: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-row {
  padding: 11px 16px;                    /* padding on the row (not the list) so the picked-card highlight is full-bleed */
  border-bottom: 1px solid rgba(15,14,17,0.05);
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-meta {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 4px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge {
  font-size: 9px; font-weight: 600;
  letter-spacing: 0.04em;
  padding: 1px 6px; border-radius: 3px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge--pubmed { background: #e0f5ee; color: #1a9e75; }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge--arxiv  { background: #fdf3e3; color: #b97318; }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge--key    { background: var(--ap-violet-light); color: var(--ap-violet); }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge--preprint { background: rgba(15,14,17,0.06); color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-badge--doi { background: rgba(15,14,17,0.06); color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-year { font-size: 10.5px; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-title {
  font-size: 12.5px; font-weight: 600;
  color: var(--ap-ink);
  line-height: 1.35;
  margin: 0 0 4px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-line {
  font-size: 10.5px;
  color: var(--ap-ink2);
  margin-bottom: 1px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-line strong { font-weight: 600; }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-line em { font-style: italic; }
:is(.build-demo.build-demo--app, .workspace--overview) .paper-doi {
  margin-left: 8px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-link {
  margin-left: 8px;
  color: var(--ap-violet);
  font-size: 9.5px;
  text-decoration: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-abs {
  font-size: 11px;
  line-height: 1.6;
  color: var(--ap-ink2);
  margin: 6px 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .paper-overview {
  display: inline-block;
  font-size: 10px;
  color: var(--ap-violet);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-filter-sidebar {
  background: var(--ap-paper2);
  border-left: 1px solid var(--ap-border2);
  padding: 12px 14px;
  overflow: hidden;
  display: flex; flex-direction: column; gap: 12px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-title {
  font-size: 12.5px; font-weight: 400;
  color: var(--ap-ink);
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-group { display: flex; flex-direction: column; gap: 4px; }
:is(.build-demo.build-demo--app, .workspace--overview) .filter-label {
  font-size: 10px; font-weight: 500;
  color: var(--ap-ink);
  margin-bottom: 3px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check {
  display: flex; align-items: center; gap: 7px;
  font-size: 10.5px;
  color: var(--ap-ink2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .cb {
  width: 11px; height: 11px;
  border: 1px solid var(--ap-border);
  border-radius: 2px;
  background: rgba(255,255,255,0.74);
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .cb.checked {
  background: var(--ap-violet);
  border-color: var(--ap-violet);
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .cb.checked::after {
  content: ''; width: 5px; height: 3px;
  border: 1.5px solid #fff; border-top: 0; border-right: 0;
  transform: rotate(-45deg) translate(0, -1px);
}
/* Read-status radio buttons (native radios in the real app). */
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .rb {
  width: 11px; height: 11px;
  border: 1px solid var(--ap-border);
  border-radius: 50%;
  background: rgba(255,255,255,0.74);
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .rb--on {
  border-color: var(--ap-violet);
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-check .rb--on::after {
  content: ''; width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--ap-violet);
}

/* ── Library import flow: "Import Source" modal + confirmation toast ── */
:is(.build-demo.build-demo--app, .workspace--overview) .app-import {
  position: absolute; inset: 0; z-index: 20;
  display: flex; align-items: center; justify-content: center;
  background: rgba(244,242,237,0.5);
  opacity: 0; pointer-events: none;
  transition: opacity .26s ease;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import.is-open { opacity: 1; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-card {
  width: min(80%, 460px);
  background: rgba(250,249,246,0.98);
  border: 1px solid rgba(15,14,17,0.08);
  border-radius: 2px;
  box-shadow: 0 18px 40px rgba(15,14,17,0.1), inset 0 1px 0 rgba(255,255,255,0.65);
  padding: 20px;
  transform: translateY(8px) scale(0.99);
  transition: transform .26s cubic-bezier(0.22,0.61,0.36,1);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import.is-open .app-import-card { transform: none; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-title {
  font-family: var(--serif); font-size: 20px; font-weight: 400;
  letter-spacing: -0.03em; color: var(--ap-ink); margin-bottom: 16px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-tabs { display: flex; gap: 6px; margin-bottom: 16px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-tab {
  flex: 1; padding: 6px 10px; min-height: 26px;
  border: 1px solid rgba(15,14,17,0.08); border-radius: 2px;
  background: rgba(255,255,255,0.72);
  font-family: var(--sans); font-size: 11px; color: var(--ap-ink2); font-weight: 400;
  white-space: nowrap;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-tab.active {
  color: var(--ap-violet);
  border-color: rgba(91,79,207,0.16);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-flabel {
  font-size: 9px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ap-ink3); margin-bottom: 6px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-input {
  border: 1px solid rgba(15,14,17,0.08); border-radius: 2px;
  background: rgba(255,255,255,0.82);
  padding: 8px 11px; min-height: 36px; box-sizing: border-box;
  font-size: 12px; color: var(--ap-ink);
  display: flex; align-items: center;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-text:empty::before {
  content: 'https://…, 10.1001/jama…, or 40172268';
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-actions {
  display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-cancel {
  padding: 6px 14px; border: 1px solid rgba(15,14,17,0.08); border-radius: 2px;
  background: rgba(255,255,255,0.82); font-family: var(--sans); font-size: 11px; color: var(--ap-ink2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-go {
  padding: 6px 14px; border: 1px solid transparent; border-radius: 2px;
  background: var(--ap-violet); color: #fff;
  font-family: var(--sans); font-size: 11px; font-weight: 500;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-import-go.is-pulse { animation: wsDemoPulse 0.36s ease; }

:is(.build-demo.build-demo--app, .workspace--overview) .app-toast {
  position: absolute; right: 16px; bottom: 14px; z-index: 25;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 13px; border-radius: 4px;
  background: #1a9e75; color: #fff;
  font-family: var(--sans); font-size: 11px;
  box-shadow: 0 10px 26px rgba(26,158,117,0.32);
  opacity: 0; transform: translateY(10px);
  transition: opacity .3s ease, transform .3s ease;
  pointer-events: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-toast.is-show { opacity: 1; transform: none; }

/* ── PDF reader overlay (Library flow) ── */
/* Reader overlay = the live reader-flow demo (camera zoom/pan + cursor), cover-
   filled like the Documents editor: gentle scale-in reveal, cropped to the frame. */
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader {
  position: absolute; inset: 0; z-index: 30;
  background: var(--ap-paper);
  opacity: 0; transform: scale(0.9); transform-origin: 34% 42%; pointer-events: none;
  transition: opacity 0.35s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1); overflow: hidden;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader.is-open { opacity: 1; transform: scale(1); pointer-events: auto; }
:is(.build-demo.build-demo--app, .workspace--overview) .rf-frame { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; background: var(--ap-paper); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-top {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 8px 16px; border-bottom: 1px solid var(--ap-border2);
  font-size: 12px; flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-crumb { display: inline-flex; align-items: center; gap: 8px; min-width: 0; color: var(--ap-ink2); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-close { color: var(--ap-ink3); font-size: 15px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-sep { color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-title { color: var(--ap-ink); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 620px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tstatus { font-size: 11px; color: var(--ap-ink3); flex-shrink: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-toolbar {
  display: flex; align-items: center; gap: 10px; position: relative;
  padding: 6px 14px; border-bottom: 1px solid var(--ap-border2);
  background: var(--ap-paper); flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tb-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 3px;
  background: var(--ap-violet); color: #fff; flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tb-btn svg { width: 13px; height: 13px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tb-btn--v { margin-left: auto; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-search {
  flex: 0 1 260px; display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px; border: 1px solid rgba(15,14,17,0.06); border-radius: 2px;
  background: var(--ap-paper2); font-size: 11px; color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-search svg { width: 12px; height: 12px; flex-shrink: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-zoom {
  font-size: 11px; color: var(--ap-ink2); padding: 4px 9px;
  border: 1px solid var(--ap-border); border-radius: 2px; flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-pages { position: absolute; left: 50%; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--ap-ink2); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-nav { color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-pagebox { border: 1px solid var(--ap-border); border-radius: 2px; padding: 2px 8px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-zbtn {
  width: 24px; height: 24px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--ap-border); border-radius: 2px; color: var(--ap-ink2); font-size: 13px; flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-body {
  flex: 1; min-height: 0; display: grid;
  grid-template-columns: 84px minmax(0,1fr) 262px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rail {
  background: var(--ap-paper2); border-right: 1px solid var(--ap-border2);
  padding: 12px 10px; display: flex; flex-direction: column; gap: 10px; overflow: hidden;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-thumb {
  display: flex; flex-direction: column; align-items: center; gap: 3px; cursor: pointer;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-thumb img {
  width: 100%; aspect-ratio: 8.5 / 11; object-fit: cover; object-position: top center;
  background: #fff; border: 1px solid var(--ap-border2); border-radius: 2px; display: block;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-thumb.active img { border-color: var(--ap-violet); box-shadow: 0 0 0 1px var(--ap-violet); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-thumb-n { font-size: 9px; line-height: 1; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-thumb.active .app-reader-thumb-n { color: var(--ap-violet); font-weight: 600; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-stage {
  overflow: hidden; background: var(--ap-paper2);
  display: flex; justify-content: center; align-items: flex-start; padding: 18px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-page {
  position: relative;
  width: 100%; max-width: 480px; background: #fff;
  border: 1px solid var(--ap-border2); box-shadow: 0 2px 12px rgba(15,14,17,0.07);
  line-height: 0; box-sizing: border-box;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-pdf { display: block; width: 100%; height: auto; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-brand { font-family: var(--serif); font-size: 20px; font-weight: 700; color: #111; letter-spacing: -0.01em; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-kicker { font-family: var(--sans); font-size: 9.5px; color: var(--ap-ink3); margin-top: 4px; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-title { font-family: var(--serif); font-size: 18px; font-weight: 700; line-height: 1.25; color: var(--ap-ink); margin: 12px 0 8px; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-authors { font-family: var(--sans); font-size: 10.5px; color: var(--ap-ink2); line-height: 1.5; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-journal-line { font-family: var(--sans); font-size: 9.5px; color: var(--ap-ink3); margin: 4px 0 12px; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-h { font-family: var(--serif); font-size: 13px; font-weight: 700; color: var(--ap-ink); margin: 14px 0 5px; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-p { font-family: var(--serif); font-size: 11px; line-height: 1.6; color: var(--ap-ink2); margin: 0 0 8px; text-align: justify; }
/* Highlight overlay — an absolutely-positioned band over a real line of the
   rendered PDF page (the Results sentence about off-target effects). */
:is(.build-demo.build-demo--app, .workspace--overview) .rp-hl {
  position: absolute;
  top: 49.7%; left: 51%; width: 33%; height: 1.5%;
  border-radius: 1px;
  background: rgba(255,214,64,0);
  transition: background .45s ease;
  pointer-events: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .rp-hl.is-hl { background: rgba(255,214,64,0.55); }
/* Text-selection highlight picker (appears above the selection before the color is applied). */
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker {
  position: absolute; top: 49.5%; left: 67%; transform: translate(-50%, -100%);
  display: inline-flex; align-items: center; gap: 5px; padding: 5px 7px;
  background: #fff; border: 1px solid var(--ap-border2); border-radius: 7px;
  box-shadow: 0 6px 22px rgba(15,14,17,0.16), 0 1px 3px rgba(15,14,17,0.08);
  opacity: 0; pointer-events: none; transition: opacity .18s ease; z-index: 4; white-space: nowrap;
}
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker.is-show { opacity: 1; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw { width: 15px; height: 15px; border-radius: 4px; border: 1px solid rgba(15,14,17,0.12); }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw--y { background: #ffe27a; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw--g { background: #b6e3a7; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw--b { background: #a8c9f5; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw--r { background: #f3aaa6; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw--p { background: #d3b3f0; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-sw.is-pick { box-shadow: 0 0 0 2px var(--ap-violet); transform: scale(1.12); }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker-div { width: 1px; height: 15px; background: var(--ap-border); margin: 0 2px; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker-u { font-family: var(--sans); font-size: 12px; font-weight: 600; color: var(--ap-ink2); text-decoration: underline; }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker-copy { font-family: var(--sans); font-size: 11px; color: var(--ap-ink2); }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker-add { display: inline-flex; color: var(--ap-ink2); }
:is(.build-demo.build-demo--app, .workspace--overview) .rp-picker-add svg { width: 13px; height: 13px; display: block; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-side {
  border-left: 1px solid var(--ap-border2); background: var(--ap-paper);
  display: flex; flex-direction: column; min-height: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tabs {
  display: flex; gap: 16px; padding: 11px 14px; border-bottom: 1px solid var(--ap-border2); flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tab {
  border: 0; background: none; padding: 0; font-family: var(--sans);
  font-size: 11.5px; font-weight: 500; color: var(--ap-ink3); cursor: default;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-tab.active { color: var(--ap-violet); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-panels { flex: 1; min-height: 0; position: relative; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-panel { display: none; position: absolute; inset: 0; padding: 12px 14px; flex-direction: column; min-height: 0; overflow: hidden; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-rtab="assistant"] .app-reader-panel--assistant,
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-rtab="annotations"] .app-reader-panel--annotations,
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-rtab="notes"] .app-reader-panel--notes { display: flex; }
/* Assistant panel */
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-assist-intro { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-rassist="on"] .app-reader-assist-intro { display: none; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-assist-mark { width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; color: var(--ap-violet); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-assist-mark svg { width: 100%; height: 100%; display: block; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-assist-h { font-family: var(--serif); font-size: 20px; font-weight: 400; letter-spacing: -0.01em; color: var(--ap-ink); text-align: center; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-assist-feed { display: none; flex: 1; min-height: 0; overflow: hidden; flex-direction: column; gap: 8px; font-size: 11px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-rassist="on"] .app-reader-assist-feed { display: flex; }
:is(.build-demo.build-demo--app, .workspace--overview) .ra-user { align-self: flex-end; max-width: 86%; background: var(--ap-paper2); color: var(--ap-ink); border-radius: 12px; padding: 6px 11px; line-height: 1.45; }
:is(.build-demo.build-demo--app, .workspace--overview) .ra-asst { color: var(--ap-ink2); line-height: 1.55; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rcomposer { border: 1px solid var(--ap-border); border-radius: 12px; padding: 8px 10px; margin-top: 8px; flex-shrink: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rcomposer-text { font-size: 11px; color: var(--ap-ink3); min-height: 20px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rcomposer-text.is-typing { color: var(--ap-ink); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rcomposer-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rcomposer-right { display: inline-flex; align-items: center; gap: 9px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-ric { display: inline-flex; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-ric svg { width: 14px; height: 14px; display: block; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rsend { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border: 1px solid rgba(91,79,207,0.4); border-radius: 2px; background: var(--ap-violet); color: #fff; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rsend svg { width: 12px; height: 12px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-rsend.is-pulse { animation: wsDemoPulse 0.36s ease; }
/* Annotations panel */
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-anno-search { border: 1px solid var(--ap-border); border-radius: 2px; background: var(--ap-paper2); padding: 6px 9px; font-size: 10.5px; color: var(--ap-ink3); margin-bottom: 12px; flex-shrink: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-anno-empty { font-size: 10.5px; line-height: 1.5; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-ranno="on"] .app-reader-anno-empty { display: none; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-anno-list { display: none; flex-direction: column; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader[data-ranno="on"] .app-reader-anno-list { display: flex; }
:is(.build-demo.build-demo--app, .workspace--overview) .ra-anno { padding: 8px 0; border-bottom: 1px solid var(--ap-border2); display: grid; gap: 4px; }
:is(.build-demo.build-demo--app, .workspace--overview) .ra-anno-quote { font-size: 11px; line-height: 1.45; color: var(--ap-ink); border-left: 2px solid rgba(255,214,64,0.9); padding-left: 8px; }
:is(.build-demo.build-demo--app, .workspace--overview) .ra-anno-loc { font-size: 9.5px; color: var(--ap-ink3); }
/* Notes panel */
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-label { font-size: 9px; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ap-ink3); margin-bottom: 6px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-h { font-size: 12px; font-weight: 500; color: var(--ap-ink); line-height: 1.35; margin-bottom: 8px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-body { flex: 1; min-height: 0; border: 1px solid var(--ap-border2); border-radius: 2px; background: rgba(255,255,255,0.6); padding: 9px 10px; font-size: 11px; line-height: 1.5; color: var(--ap-ink); overflow: hidden; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-text:empty::before { content: 'Capture claims, methods, caveats, and quotes you want to carry into the main notes workspace.'; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; flex-shrink: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-saved { font-size: 9.5px; color: var(--ap-ink3); }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-save { padding: 5px 12px; border: 1px solid transparent; border-radius: 2px; background: var(--ap-violet); color: #fff; font-family: var(--sans); font-size: 10.5px; font-weight: 500; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-reader-notes-save.is-pulse { animation: wsDemoPulse 0.36s ease; }

/* ── Document view: the live cite-flow demo (cite-flow.html) ── */
/* The iframe fills the frame; the demo's embed mode covers it (fills edge to
   edge, cropping the overflow off-screen — no letterbox / white margins). */
:is(.build-demo.build-demo--app, .workspace--overview) .app-doc-editor {
  position: absolute; inset: 0; z-index: 12; background: #f9fbfd;
  opacity: 0; transform: scale(0.9); transform-origin: 30% 32%; pointer-events: none;
  transition: opacity 0.35s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1); overflow: hidden;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-doc-editor.is-open { opacity: 1; transform: scale(1); pointer-events: auto; }
:is(.build-demo.build-demo--app, .workspace--overview) .cf-frame { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; background: #f9fbfd; }

/* Clicking a document in the list — a clear colour change so it reads as selected */
:is(.build-demo.build-demo--app, .workspace--overview) .doc-list-row { transition: background 0.14s ease; }
:is(.build-demo.build-demo--app, .workspace--overview) .doc-list-row.is-doc-clicked { background: rgba(15,14,17,0.07); }

:is(.build-demo.build-demo--app, .workspace--overview) .filter-count {
  margin-left: auto;
  font-size: 9.5px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .filter-clear {
  font-size: 10px;
  color: var(--ap-violet);
  cursor: pointer;
  margin-top: 2px;
}

/* ── Documents row ── */
:is(.build-demo.build-demo--app, .workspace--overview) .app-doc-grid {
  flex: 1; min-height: 0;
  overflow: hidden;
  padding: 14px 20px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-doc-group-label {
  font-size: 9px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ap-ink3);
  margin-bottom: 8px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-doc-grid-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-card {
  border: 1px solid var(--ap-border2);
  background: var(--ap-paper);
  border-radius: 2px;
  overflow: hidden;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-card-preview {
  background: #f6f4ef;
  aspect-ratio: 17 / 11;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ap-border2);
  padding: 10px 12px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-preview-lines {
  display: flex; flex-direction: column; gap: 4px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .dpl {
  height: 4px; background: rgba(15,14,17,0.13);
  border-radius: 1px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .dpl-h { height: 6px; background: rgba(15,14,17,0.28); width: 60%; margin-bottom: 4px; }
:is(.build-demo.build-demo--app, .workspace--overview) .dpl-short { width: 50%; }
:is(.build-demo.build-demo--app, .workspace--overview) .dpl-mid { width: 78%; }
:is(.build-demo.build-demo--app, .workspace--overview) .doc-card-meta {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-meta-wrap {
  display: flex; align-items: center; gap: 7px;
  flex: 1; min-width: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-provider {
  width: 14px; height: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-meta-text { min-width: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .doc-title {
  font-size: 11px;
  font-weight: 500;
  color: var(--ap-ink);
  line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-sub {
  font-size: 9.5px;
  color: var(--ap-ink3);
  margin-top: 1px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .doc-more {
  color: var(--ap-ink3);
  font-size: 13px;
  line-height: 1;
}

/* ── Assistant chat row ── */
:is(.build-demo.build-demo--app, .workspace--overview) .app-panel--chat {
  background: var(--ap-paper);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 18px;
  flex-shrink: 0;
  gap: 12px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-scope {
  display: inline-flex; align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-crumb {
  display: inline-flex; align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--ap-ink);
  font-family: var(--sans);
  white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
  cursor: pointer;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-crumb-caret {
  font-size: 9px;
  color: var(--ap-ink3);
  line-height: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-crumb-sep {
  color: var(--ap-ink3);
  font-size: 12px;
  user-select: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-actions {
  display: inline-flex; align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-newconv {
  display: inline-flex; align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--ap-ink);
  font-family: var(--sans);
  white-space: nowrap;
  cursor: pointer;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-new-btn {
  width: 24px; height: 24px;
  border: 0;
  background: transparent;
  color: var(--ap-ink2);
  font-size: 16px;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  line-height: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-new-btn:hover {
  color: var(--ap-ink);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-feed {
  flex: 1; min-height: 0;
  overflow: hidden;
  padding: 6px 22px 4px;
  display: flex; flex-direction: column; gap: 8px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-user {
  align-self: flex-end;
  max-width: 80%;
  background: rgba(242,240,235,0.78);
  color: var(--ap-ink);
  font-size: 11.5px;
  padding: 6px 14px;
  border-radius: 14px;
  line-height: 1.5;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-context {
  font-size: 10px;
  color: var(--ap-ink3);
  line-height: 1.4;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-asst {
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--ap-ink2);
  min-width: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-asst p {
  margin: 0 0 8px;
  color: var(--ap-ink2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-asst p:last-child { margin-bottom: 0; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-asst-h {
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--ap-ink);
  margin: 8px 0 4px;
}
/* Bold in assistant prose is weight 500 (font-medium), never 700 — matches
   MarkdownText.tsx's two-weight system. */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-asst strong {
  font-weight: 500;
  color: var(--ap-ink);
}
/* Inline citation token: violet, underlined with a faint 30%-violet decoration
   that would solidify on hover — matches CitationToken.tsx. */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-cite {
  color: var(--ap-violet);
  text-decoration: underline;
  text-decoration-color: rgba(91, 79, 207, 0.3);
  text-underline-offset: 2px;
  white-space: nowrap;
  cursor: pointer;
}
/* Only the "Searched" label of the context strip is uppercased (ContextStrip). */
:is(.build-demo.build-demo--app, .workspace--overview) .ws-ctx-label {
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
/* Post-response message actions row (Copy / Helpful / Not helpful), icon-only,
   muted, appears after a completed assistant turn — matches MessageActions.tsx. */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 1px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-act {
  display: inline-flex;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-act svg {
  width: 13px;
  height: 13px;
  display: block;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-section { margin-bottom: 8px; }
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-section-h {
  font-size: 11px;
  font-weight: 600;
  color: var(--ap-ink);
  margin-bottom: 3px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-section ul {
  list-style: disc;
  padding-left: 18px;
  margin: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-section li {
  font-size: 10.5px;
  color: var(--ap-ink2);
  line-height: 1.45;
  margin-bottom: 2px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-stat {
  display: inline-block;
  margin-left: 6px;
  padding: 0 6px;
  font-size: 9px;
  letter-spacing: 0.02em;
  border-radius: 999px;
  background: rgba(91,79,207,0.10);
  color: var(--ap-violet);
  font-weight: 500;
  vertical-align: middle;
}

/* "+ Save / Added" tags inline in chat prose */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-pill {
  display: inline-block;
  padding: 0 6px;
  margin: 0 1px;
  font-size: 9.5px;
  font-weight: 500;
  background: var(--ap-violet-light);
  color: var(--ap-violet);
  border-radius: 999px;
  vertical-align: baseline;
}

/* "Library updates" block, green tint matches MessageThread.tsx
   (addedPapers block: border rgba(26,158,117,0.18), bg rgba(26,158,117,0.06),
   text #0f6f53, 2px radius). */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-library-updates {
  margin-top: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(26,158,117,0.18);
  background: rgba(26,158,117,0.06);
  border-radius: 2px;
  display: grid;
  gap: 3px;
  color: #0f6f53;
  font-size: 11px;
  line-height: 1.5;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-library-updates .lib-up-head {
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(15,111,83,0.85);
  font-weight: 600;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-library-updates .lib-up-row strong {
  font-weight: 600;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-library-updates .lib-up-sub {
  font-size: 10.5px;
  color: rgba(15,111,83,0.78);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer {
  margin: 4px 22px 12px;
  border: 1px solid var(--ap-border);
  background: #fff;
  border-radius: 16px;
  padding: 10px 12px;
  display: flex; flex-direction: column; gap: 8px;
  flex-shrink: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer-text {
  font-size: 11.5px;
  color: var(--ap-ink3);
  padding: 2px 1px;
  min-height: 28px;
}
/* While the demo types a query, the text is solid dark ink like a real input
   (higher specificity so it wins over the muted placeholder colour above). */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer-text.is-typing {
  color: var(--ap-ink);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer-footer {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer-left,
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-composer-right {
  display: flex; align-items: center; gap: 10px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-web {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10.5px;
  color: var(--ap-ink3);
}
/* Send button: a small violet icon square with an up-arrow (matches the live
   app's send control), not a text button. */
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-send {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  padding: 0;
  border: 1px solid rgba(91,79,207,0.4);
  background: var(--ap-violet);
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-chat-send svg {
  width: 13px; height: 13px; display: block;
}

/* ── Briefing row ── */
:is(.build-demo.build-demo--app, .workspace--overview) .app-brief-split {
  display: grid; grid-template-columns: minmax(0, 1fr) 230px;
  flex: 1; min-height: 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-brief-list {
  overflow: hidden;
  padding: 4px 18px 14px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-row {
  padding: 11px 0;
  border-bottom: 1px solid var(--ap-border2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-title {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ap-ink);
  line-height: 1.35;
  margin: 0 0 4px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-line {
  font-size: 10.5px;
  color: var(--ap-ink2);
  margin-bottom: 1px;
  line-height: 1.55;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-line strong {
  font-weight: 500;
  color: var(--ap-ink2);
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-line em { font-style: italic; }
:is(.build-demo.build-demo--app, .workspace--overview) .brief-year {
  margin-left: 8px;
  color: var(--ap-ink3);
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-link {
  margin-left: 8px;
  color: var(--ap-violet);
  font-size: 9.5px;
  text-decoration: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-abs {
  font-size: 11px;
  line-height: 1.6;
  color: var(--ap-ink2);
  margin: 6px 0;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-overview {
  display: inline-block;
  font-size: 10px;
  color: var(--ap-violet);
  margin-bottom: 6px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-acts {
  display: flex; gap: 3px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-bact {
  font-size: 9px;
  padding: 2px 7px;
  border-radius: 2px;
  border: 1px solid var(--ap-border);
  background: transparent;
  color: var(--ap-ink3);
  cursor: pointer;
  font-family: var(--sans);
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-bact--save {
  background: var(--ap-violet-light);
  color: var(--ap-violet);
  border-color: transparent;
}
:is(.build-demo.build-demo--app, .workspace--overview) .app-brief-sidebar {
  background: rgba(242,240,235,0.52);
  border-left: 1px solid var(--ap-border2);
  padding: 12px 12px;
  overflow: hidden;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-rp-title {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ap-ink3);
  margin-bottom: 10px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-sidebar-help {
  font-size: 10px;
  line-height: 1.5;
  color: var(--ap-ink3);
  margin-bottom: 10px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag-list {
  display: flex; flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 10px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag {
  border: 1px solid rgba(15,14,17,0.08);
  background: rgba(255,255,255,0.88);
  color: var(--ap-ink2);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  display: inline-flex; align-items: center; gap: 5px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag .x {
  color: var(--ap-ink3);
  font-size: 11px;
  line-height: 1;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag--learned {
  border-color: rgba(91,79,207,0.18);
  background: rgba(237,233,255,0.6);
  color: var(--ap-violet);
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag--learned .new {
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ap-violet);
  opacity: 0.7;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag-input {
  display: flex; gap: 6px;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag-input input {
  flex: 1; min-width: 0;
  border: 1px solid rgba(15,14,17,0.08);
  background: rgba(255,255,255,0.88);
  color: var(--ap-ink2);
  font-size: 10.5px;
  padding: 5px 8px;
  border-radius: 2px;
  font-family: var(--sans);
  outline: none;
}
:is(.build-demo.build-demo--app, .workspace--overview) .brief-tag-input button {
  border: 1px solid rgba(15,14,17,0.08);
  background: rgba(255,255,255,0.88);
  color: var(--ap-ink2);
  font-size: 10.5px;
  padding: 0 10px;
  min-height: 26px;
  border-radius: 2px;
  font-family: var(--sans);
  cursor: pointer;
}

/* ── Mock: Chat (Assistant) ── */
.mock-chat {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: var(--paper);
}
.mock-chat .chat-top {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border2);
  background: rgba(242,240,235,0.45);
  flex-shrink: 0;
}
.mock-chat .chat-scope {
  display: inline-flex;
  background: rgba(15,14,17,0.06);
  border-radius: 4px;
  padding: 2px;
}
.mock-chat .chat-tab {
  font-size: 10.5px;
  padding: 3px 9px;
  border-radius: 3px;
  color: var(--ink3);
  font-weight: 500;
}
.mock-chat .chat-tab.active {
  background: var(--violet-light);
  color: var(--violet);
}
.mock-chat .chat-meta {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  color: var(--ink2);
}
.mock-chat .chat-new {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--border2);
  border-radius: 3px;
  padding: 3px 8px;
  color: var(--ink2);
  background: var(--paper);
}
.mock-chat .chat-plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--border2);
  border-radius: 3px;
  font-size: 13px;
  color: var(--ink2);
  background: var(--paper);
}
.mock-chat .chat-feed {
  flex: 1;
  overflow: hidden;
  padding: 14px 22px 8px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.mock-chat .chat-user {
  align-self: flex-end;
  max-width: 70%;
  background: rgba(15,14,17,0.06);
  color: var(--ink);
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 14px;
  line-height: 1.4;
}
.mock-chat .chat-step {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  color: var(--ink2);
  font-weight: 500;
}
.mock-chat .chat-step .chat-ms {
  margin-left: auto;
  font-size: 10px;
  color: var(--ink3);
  font-weight: 400;
}
.mock-chat .chat-step svg { flex-shrink: 0; }
.mock-chat .chat-italic {
  font-size: 11px;
  font-style: italic;
  color: var(--ink3);
  line-height: 1.5;
  padding-left: 17px;
  margin-top: -4px;
}
.mock-chat .chat-asst {
  font-size: 11.5px;
  color: var(--ink);
  line-height: 1.55;
}
.mock-chat .chat-asst p {
  margin: 0 0 8px;
  color: var(--ink2);
}
.mock-chat .chat-asst h6 {
  font-family: Georgia, serif;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin: 4px 0 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border2);
}
.mock-chat .chat-section { margin-bottom: 6px; }
.mock-chat .chat-sec-h {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 3px;
}
.mock-chat .chat-section ul {
  margin: 0;
  padding-left: 14px;
  list-style: none;
}
.mock-chat .chat-section ul li {
  font-size: 10.5px;
  color: var(--ink2);
  line-height: 1.45;
  margin-bottom: 2px;
  position: relative;
}
.mock-chat .chat-section ul li::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 7px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--violet);
  opacity: 0.55;
}
.mock-chat .chat-input {
  margin: 0 22px 14px;
  border: 1px solid var(--border2);
  border-radius: 6px;
  background: var(--paper);
  padding: 9px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.mock-chat .chat-attach-icon { color: var(--ink3); flex-shrink: 0; }
.mock-chat .chat-placeholder {
  flex: 1;
  font-size: 11px;
  color: var(--ink3);
}
.mock-chat .chat-send {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--violet);
  background: var(--violet-light);
  padding: 4px 12px;
  border-radius: 3px;
}

/* ── Mock: Briefing ── */
.mock-brief { padding: 16px 18px; overflow: hidden; }
.mock-brief .head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 12px;
}
.mock-brief .head .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #1a9e75;
}
.mock-brief .head .date { font-size: 11px; color: var(--ink3); }
.mock-brief .head .ct {
  margin-left: auto;
  font-size: 10px;
  color: var(--ink3);
  background: var(--violet-light);
  color: var(--violet);
  padding: 1px 7px;
  border-radius: 999px;
  font-weight: 500;
}
.mock-brief .card {
  border: 1px solid var(--border2);
  border-radius: 6px;
  padding: 9px 11px;
  margin-bottom: 7px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 9px;
  background: var(--paper);
}
.mock-rel {
  width: 22px; height: 22px;
  border-radius: 4px;
  font-size: 9.5px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.mock-rel.h { background: #e0f5ee; color: #1a9e75; }
.mock-rel.m { background: #fdf3e3; color: #b97318; }
.mock-brief .card .ttl {
  font-size: 11.5px; font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 2px;
}
.mock-brief .card .src {
  font-size: 9.5px; color: var(--ink3);
  margin-bottom: 4px;
}
.mock-brief .card .why {
  font-size: 10.5px;
  color: var(--ink2);
  line-height: 1.45;
  padding: 5px 7px;
  background: var(--paper2);
  border-radius: 4px;
}

/* ────────────────────────────────────────────────────────────────────
   Lock section ,  the 9 tiles rotate 45° into the canonical Mosaic logo
   ──────────────────────────────────────────────────────────────────── */
.lock {
  background: var(--paper);
  padding: 0;
  min-height: 165vh;
  position: relative;
  border-top: 1px solid var(--border2);
  font-family: system-ui;
}
.lock-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 32px;
  box-sizing: border-box;
}
.lock-inner {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 96px;
  align-items: center;
}
@media (max-width: 880px) {
  .lock-inner { grid-template-columns: 1fr; gap: 56px; text-align: center; justify-items: center; }
  .lock-sticky { padding: 96px 24px; }
  /* Center the waitlist pill within the centered copy column. Higher
     specificity than waitlist.css's `.waitlist-form { margin: 0 }`. */
  .lock-copy .lock-waitlist { margin-left: auto; margin-right: auto; }
}
/* Phones: the pinned 100vh + overflow:hidden viewport can't fit the stacked
   stage + copy + waitlist form (~760px) on a short screen, so it clips the
   #waitlist form — the target of every "Join the waitlist" CTA on the page.
   Un-pin the section so it flows normally. The logo's fly-in/rotate is
   scroll-driven (JS sets --zoom/--zy and adds .in-view at 99.9% of the pin
   travel); with no pin there's no travel, so we override the stage transform
   and force the finished "assembled diamond" state in CSS. The JS only ever
   writes the --zoom/--zy custom props, never `transform` itself, so these
   plain rules win cleanly. */
@media (max-width: 760px) {
  .lock { min-height: 0; }
  .lock-sticky {
    position: static;
    height: auto;
    overflow: visible;
    padding: 72px 20px;
  }
  /* !important: these must beat the base .lock-stage/.lock-tile rules that
     appear LATER in this file (equal specificity → later wins). Safe because
     the scroll JS only ever writes the --zoom/--zy custom props, never the
     `transform` property itself. */
  .lock-stage { transform: none !important; margin: 0 auto; }
  .lock-tile { transform: translate3d(var(--tx), var(--ty), 0) rotate(45deg) !important; }
  .lock-tile svg { opacity: 0 !important; }
  .lock-title { font-size: clamp(30px, 8.5vw, 38px); }
}

/* copy is always visible, no animation */
.lock-copy { opacity: 1; }
.lock-waitlist { margin-top: 30px; }
.lock-fineprint { margin: 14px 0 0; font: 400 14px/1.5 system-ui; color: var(--ink3); }

/* ── Stage on the left ── */
.lock-stage {
  position: relative;
  width: 460px; height: 460px;
  flex-shrink: 0;
  margin-left: auto;
  --tile: 72px;
  /* zoom + descent driven by scroll (JS sets --zoom/--zy); the logo starts
     small and beyond the top edge, like the assistant icon flying in */
  transform: translateY(var(--zy, -88vh)) scale(var(--zoom, 0.3));
  transform-origin: center center;
  will-change: transform;
}
@media (max-width: 880px) {
  .lock-stage { margin: 0 auto; width: 220px; height: 220px; --tile: 34px; }
}
.lock-stage-inner {
  position: absolute; inset: 0;
  /* Parent no longer rotates, tiles rotate individually now. */
}

.lock-tile {
  position: absolute;
  top: 50%; left: 50%;
  width: var(--tile);
  height: var(--tile);
  margin: calc(var(--tile) * -0.5) 0 0 calc(var(--tile) * -0.5);
  border-radius: calc(var(--tile) * 0.25);
  /* Logo-shade violet on background, opacities 0.28/0.65/1.00 match the logo. */
  background: rgba(91, 79, 207, var(--op, 1));
  /* translate3d forces a stable GPU compositor layer for this tile so the
     rounded-corner silhouette stays cleanly rasterized through the rotation
     (no halos around the edges). transform-origin keeps the pivot dead-center. */
  transform: translate3d(var(--tx), var(--ty), 0) rotate(0deg);
  transform-origin: 50% 50%;
  /* Gentler ease-in-out, less mid-motion acceleration means fewer pixels
     change per frame, which makes the rotation look smoother. */
  transition: transform 1500ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  pointer-events: none;
  /* Intentionally NO `will-change: transform` here, it promotes a separate
     compositor layer whose subpixel rasterization causes the "shadow" halo
     you saw. Standard 2D compositing draws cleaner for a single rotation. */
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.lock.in-view .lock-tile {
  /* Each tile rotates 45° in place. All 9 rotate simultaneously, "locking"
     together into the diamond, which IS the Mosaic logo. */
  transform: translate3d(var(--tx), var(--ty), 0) rotate(45deg);
}

.lock-tile svg {
  display: block;
  opacity: 1;
  /* Icons fade out IN SYNC with the rotation, same duration and easing as
     the tile transform, no delay. By the time the tile finishes rotating 45°,
     the icon is fully gone, leaving a clean Mosaic logo. */
  transition: opacity 1500ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.lock.in-view .lock-tile svg {
  opacity: 0;
}

/* (no settle keyframe ,  the transition above handles a clean ease into 45°
   with no overshoot or bounce-back.) */

/* (removed: faint horizontal underline beneath the locked diamond) */

/* ── Copy on the right ── */
.lock-copy { max-width: 460px; }
.lock-eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--violet);
  margin: 0 0 18px;
}
@keyframes lockEbFlash {
  0% { opacity: 0; transform: translateY(4px); }
  38% { opacity: 1; }
  54% { opacity: 0.3; }
  100% { opacity: 1; transform: translateY(0); }
}
.lock-title .tw-caret {
  display: inline-block;
  width: 3px; height: 0.8em;
  margin-left: 3px;
  background: var(--violet);
  vertical-align: -0.04em;
  animation: lockCaret 0.9s steps(1) infinite;
}
@keyframes lockCaret { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }
.lock-title {
  font-family: Georgia, serif;
  font-size: clamp(40px, 4.6vw, 60px);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 22px;
}
.lock-body {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink2);
  margin: 0 0 36px;
  max-width: 440px;
}
.lock-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--violet);
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: 2px;
  transition: opacity 120ms ease, transform 200ms ease;
}
.lock-cta:hover { opacity: 0.9; transform: translateX(2px); }
.lock-cta svg {
  transition: transform 200ms ease;
}
.lock-cta:hover svg { transform: translateX(3px); }


/* ─────────────────────────────────────────────────────────────────
   Documents editor mock, Word-style writing surface with the inline
   "Find Source" popup that picks a citation from the user's library
   without leaving the draft.
   ───────────────────────────────────────────────────────────────── */
.build-demo.build-demo--app .app-doc-editor {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  font-family: system-ui;
  color: var(--ink);
  overflow: hidden;
}
.build-demo.build-demo--app .ade-chrome {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border2);
  background: #f7f5f0;
  flex-shrink: 0;
}
.build-demo.build-demo--app .ade-tab {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11px;
  color: var(--ink);
  padding: 4px 10px;
  background: #fff;
  border: 1px solid var(--border2);
  border-radius: 2px;
}
.build-demo.build-demo--app .ade-saved {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 10px;
  color: #1a9e75;
  margin-left: auto;
}
.build-demo.build-demo--app .ade-share {
  font-size: 10.5px;
  color: var(--ink2);
  padding: 3px 9px;
  border: 1px solid var(--border2);
  background: #fff;
  border-radius: 2px;
}
.build-demo.build-demo--app .ade-toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 14px;
  border-bottom: 1px solid var(--border2);
  background: #fdfcf9;
  flex-shrink: 0;
}
.build-demo.build-demo--app .ade-tool {
  font-size: 10.5px;
  color: var(--ink2);
  padding: 2px 7px;
  border-radius: 2px;
}
.build-demo.build-demo--app .ade-tool-text {
  font-size: 10px;
  color: var(--ink3);
  padding: 2px 8px;
  border: 1px solid var(--border2);
  background: #fff;
}
.build-demo.build-demo--app .ade-tool-div {
  width: 1px;
  height: 14px;
  background: var(--border2);
}
.build-demo.build-demo--app .ade-body {
  position: relative;
  flex: 1; min-height: 0;
  padding: 16px 28px;
  overflow: hidden;
  background: #fff;
}
.build-demo.build-demo--app .ade-section {
  font-family: Georgia, serif;
  font-size: 12.5px;
  color: var(--ink);
  margin-bottom: 8px;
}
.build-demo.build-demo--app .ade-para {
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0;
  max-width: 100%;
}
.build-demo.build-demo--app .ade-cite {
  color: var(--violet);
  font-size: 9.5px;
  vertical-align: super;
  margin-left: 1px;
}
.build-demo.build-demo--app .ade-highlight {
  background: rgba(91,79,207,0.16);
  border-bottom: 2px solid var(--violet);
  padding: 0 1px;
}
.build-demo.build-demo--app .ade-find-pop {
  position: absolute;
  left: 26px;
  bottom: 16px;
  width: 270px;
  background: #fff;
  border: 1px solid var(--border2);
  border-radius: 4px;
  box-shadow: 0 14px 30px rgba(15,14,17,0.10), 0 2px 6px rgba(15,14,17,0.04);
  padding: 10px 12px;
  display: flex; flex-direction: column; gap: 6px;
}
.build-demo.build-demo--app .afp-head { display: flex; flex-direction: column; gap: 2px; }
.build-demo.build-demo--app .afp-title-row {
  display: flex; align-items: center; justify-content: space-between;
}
.build-demo.build-demo--app .afp-title {
  font-family: Georgia, serif;
  font-size: 13px;
  color: var(--ink);
}
.build-demo.build-demo--app .afp-back {
  font-size: 10px;
  color: var(--ink2);
  border: 1px solid var(--border2);
  padding: 2px 8px;
  border-radius: 2px;
}
.build-demo.build-demo--app .afp-sub {
  font-size: 9.5px;
  color: var(--ink3);
}
.build-demo.build-demo--app .afp-results-label {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-top: 2px;
}
.build-demo.build-demo--app .afp-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10px;
  color: #1a9e75;
}
.build-demo.build-demo--app .afp-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #1a9e75;
}
.build-demo.build-demo--app .afp-source-card {
  border: 1px solid var(--border2);
  background: #fafaf6;
  border-radius: 3px;
  padding: 8px 9px;
  display: flex; flex-direction: column; gap: 4px;
}
.build-demo.build-demo--app .afp-quote {
  font-size: 10px;
  line-height: 1.5;
  color: var(--ink);
  font-style: italic;
}
.build-demo.build-demo--app .afp-source-title {
  font-size: 9.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}
.build-demo.build-demo--app .afp-source-meta {
  font-size: 9px;
  color: var(--ink3);
}
.build-demo.build-demo--app .afp-actions {
  display: flex; align-items: center; gap: 6px;
  margin-top: 3px;
}
.build-demo.build-demo--app .afp-badge {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: #e0f5ee;
  color: #1a9e75;
  padding: 1px 6px;
  border-radius: 2px;
}
.build-demo.build-demo--app .afp-view {
  font-size: 9.5px;
  color: var(--violet);
}
.build-demo.build-demo--app .afp-insert {
  margin-left: auto;
  font-size: 9.5px;
  font-weight: 500;
  background: var(--violet);
  color: #fff;
  border: 0;
  padding: 3px 9px;
  border-radius: 2px;
  cursor: pointer;
  font-family: var(--sans);
}