:root {
  --ink: #17201d;
  --ink-soft: #34423c;
  --stone: #f4f0e8;
  --paper: #fffdf8;
  --line: #d7d0c2;
  --forest: #215645;
  --forest-2: #2f755f;
  --copper: #a45d32;
  --slate: #526879;
  --warn: #a66b1f;
  --danger: #a5443d;
  --shadow: 0 18px 40px rgba(23, 32, 29, .12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 32, 29, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 32, 29, .018) 1px, transparent 1px),
    var(--stone);
  background-size: 28px 28px;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(47, 117, 95, .35);
  outline-offset: 2px;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 78px minmax(620px, 1fr) 8px minmax(320px, 390px);
}

.nav-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 14px 10px;
  background: #111a17;
  color: #f7f1e7;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 5;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255,255,255,.25);
  display: grid;
  place-items: center;
  margin: 0 auto 12px;
  color: #f4d8b2;
  font-weight: 800;
  letter-spacing: .06em;
}
.nav-item {
  min-height: 54px;
  border: 0;
  color: rgba(255,255,255,.72);
  background: transparent;
  display: grid;
  place-items: center;
  gap: 3px;
  border-radius: 8px;
}
.nav-item span:last-child { font-size: 11px; }
.nav-item .icon { font-size: 21px; line-height: 1; }
.nav-item.active, .nav-item:hover {
  color: #fff9ee;
  background: rgba(255,255,255,.1);
}
.nav-item.bottom { margin-top: auto; }

.workspace {
  min-width: 0;
  padding: 26px;
  overflow: hidden;
}
.topbar, .reader-header, .page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 18px;
}
.eyebrow {
  margin: 0 0 5px;
  color: var(--copper);
  font-size: 12px;
  line-height: 1.2;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
}
h1, h2, p { margin-top: 0; }
h1 {
  margin-bottom: 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: 0;
  max-width: 720px;
}
h2 { font-size: 17px; margin-bottom: 4px; }

.script-switch, .segmented, .tabs, .review-toolbar {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  background: rgba(255,253,248,.76);
  border-radius: 8px;
}
.script-switch button, .segmented button, .tabs button, .review-toolbar button {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  padding: 8px 10px;
  border-radius: 6px;
}
.script-switch button.active, .segmented button.active, .tabs button.active, .review-toolbar button.active {
  color: #fff;
  background: var(--forest);
}

.search-panel {
  background: rgba(255,253,248,.86);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  box-shadow: 0 8px 30px rgba(23, 32, 29, .07);
}
.search-line {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 12px;
  align-items: center;
}
.search-box {
  height: 52px;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 8px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid #c7bdad;
  background: #fff;
  border-radius: 8px;
}
.search-box span { color: var(--forest); font-size: 23px; }
.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 18px;
}
.filters {
  display: grid;
  grid-template-columns: repeat(7, minmax(92px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
label {
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}
select, input, textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
  min-height: 37px;
  padding: 8px 9px;
  color: var(--ink);
}
textarea { min-height: 78px; resize: vertical; }

.content-grid {
  display: grid;
  grid-template-columns: minmax(420px, 1fr) 260px;
  gap: 18px;
  margin-top: 18px;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.section-head p { margin: 0; color: #637168; font-size: 13px; }
.results-list { display: grid; gap: 10px; }
.result-card {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  background: rgba(255,253,248,.92);
  border-radius: 8px;
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.result-card:hover {
  transform: translateY(-1px);
  border-color: rgba(33, 86, 69, .42);
  box-shadow: 0 12px 26px rgba(23, 32, 29, .09);
}
.thumb, .scan-preview {
  min-height: 96px;
  border: 1px solid rgba(23, 32, 29, .12);
  background: linear-gradient(135deg, #ead7be, #f7efe2 45%, #c8d1ca);
  border-radius: 4px;
  display: grid;
  place-items: center;
  color: rgba(23,32,29,.7);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
  padding: 8px;
}
.result-main h3 {
  margin: 0 0 4px;
  font-size: 17px;
  line-height: 1.25;
}
.meta-line {
  color: #637168;
  font-size: 13px;
  margin-bottom: 7px;
}
.excerpt {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.45;
  margin-bottom: 9px;
}
.tags, .source-chips, .prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag, .source-chip, .prompt-chips button, .status-dot, .grounding {
  border: 1px solid rgba(33, 86, 69, .18);
  background: rgba(33, 86, 69, .08);
  color: var(--forest);
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 700;
}
.rights {
  color: var(--copper);
  background: rgba(164, 93, 50, .1);
  border-color: rgba(164, 93, 50, .2);
}
.card-actions {
  opacity: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
  transition: opacity .15s ease;
}
.result-card:hover .card-actions, .result-card:focus-within .card-actions { opacity: 1; }
.ghost-button, .card-actions button, .pager button {
  border: 1px solid var(--line);
  background: #fffdf8;
  color: var(--ink);
  border-radius: 6px;
  padding: 8px 10px;
  font-weight: 800;
}
.primary-button {
  border: 1px solid var(--forest);
  color: #fff;
  background: var(--forest);
  border-radius: 6px;
  padding: 10px 13px;
  font-weight: 800;
}
.primary-button:hover { background: var(--forest-2); }
.full { width: 100%; }

.shelves { display: grid; gap: 8px; }
.shelf-row {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 9px;
  align-items: center;
  padding: 9px;
  background: rgba(255,253,248,.72);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.shelf-row span:first-child {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: rgba(164, 93, 50, .12);
  color: var(--copper);
  border-radius: 6px;
}
.shelf-row strong { display: block; font-size: 14px; }
.shelf-row small { color: #637168; }
.empty-state {
  margin-top: 12px;
  display: grid;
  gap: 4px;
  padding: 13px;
  border: 1px dashed #bdb4a5;
  color: #637168;
  background: rgba(255,253,248,.54);
  border-radius: 8px;
}
.empty-state strong { color: var(--ink); }

.divider {
  background: transparent;
  cursor: col-resize;
  position: relative;
}
.divider::after {
  content: "";
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 3px;
  width: 2px;
  background: rgba(23,32,29,.12);
  border-radius: 2px;
}
.assistant-panel {
  height: 100vh;
  position: sticky;
  top: 0;
  overflow: auto;
  padding: 22px 18px;
  background: #fbf7ef;
  border-left: 1px solid var(--line);
  box-shadow: -12px 0 30px rgba(23, 32, 29, .06);
}
.assistant-panel header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.assistant-panel h2 { margin: 0; }
.prompt-chips button {
  border-radius: 999px;
  cursor: pointer;
}
.answer-card {
  margin: 14px 0;
  padding: 14px;
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.answer-topline {
  display: flex;
  justify-content: space-between;
  color: #637168;
  font-size: 12px;
  margin-bottom: 8px;
}
.answer-card p { color: var(--ink-soft); line-height: 1.5; }
.passages { display: grid; gap: 8px; margin-top: 12px; }
.passage {
  border-left: 3px solid var(--forest);
  background: rgba(33,86,69,.06);
  padding: 8px 10px;
  font-size: 13px;
  color: var(--ink-soft);
}
.ask-box { margin-top: 14px; }

.hidden { display: none !important; }
.reader-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 16px;
}
.reader-main, .reader-side, .flow-card, .review-table {
  background: rgba(255,253,248,.9);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.reader-main { padding: 14px; }
.reader-tools {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.pager { display: flex; align-items: center; gap: 8px; color: #637168; font-weight: 700; }
.scan-pair {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 16px;
}
.scan-preview { min-height: 520px; align-content: start; padding-top: 30px; }
.document-text {
  min-height: 520px;
  padding: 24px;
  background: #fffaf1;
  border: 1px solid #e2dacd;
  border-radius: 6px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.75;
}
.document-text [dir="rtl"] {
  font-family: "Noto Naskh Arabic", "Geeza Pro", serif;
  font-size: 22px;
}
.highlight { background: rgba(238, 194, 112, .45); border-radius: 3px; }
.reader-side { padding: 14px; display: grid; gap: 14px; }
.reader-side section + section { border-top: 1px solid var(--line); padding-top: 14px; }
dl { display: grid; grid-template-columns: 92px 1fr; gap: 7px; margin: 0; font-size: 13px; }
dt { color: #637168; font-weight: 800; }
dd { margin: 0; }
.citation-list, .related-list { display: grid; gap: 8px; }
.citation-item, .related-item {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.55);
  font-size: 13px;
}

.flow-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 18px;
}
.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  align-content: start;
}
.steps li {
  padding: 12px;
  background: rgba(255,253,248,.66);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #637168;
  font-weight: 800;
}
.steps li.active { background: var(--forest); color: #fff; border-color: var(--forest); }
.flow-card { padding: 16px; display: grid; gap: 16px; }
.dropzone {
  min-height: 132px;
  border: 2px dashed #bdb4a5;
  background: rgba(244,240,232,.62);
  border-radius: 8px;
  display: grid;
  place-items: center;
  gap: 8px;
  padding: 16px;
  text-align: center;
}
.dropzone span { font-size: 28px; color: var(--forest); }
.dropzone input { width: min(100%, 420px); }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.wide { grid-column: 1 / -1; }
.rights-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}
.rights-box legend { font-weight: 800; color: var(--ink); }
.rights-box label { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.ocr-preview {
  border-left: 4px solid var(--copper);
  background: rgba(164,93,50,.08);
  padding: 12px;
}
.flow-actions { display: flex; justify-content: flex-end; gap: 8px; }

.review-toolbar { margin-bottom: 14px; }
.review-table { overflow: auto; }
.review-row {
  min-width: 900px;
  display: grid;
  grid-template-columns: 2fr 1fr .8fr .9fr 1.1fr .9fr 1.8fr;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}
.review-head {
  color: #637168;
  background: rgba(244,240,232,.72);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.review-row:last-child { border-bottom: 0; }
.meter {
  height: 8px;
  background: #e7ded1;
  border-radius: 999px;
  overflow: hidden;
}
.meter span { display: block; height: 100%; background: var(--forest); }
.warning { color: var(--warn); font-weight: 800; }
.danger { color: var(--danger); font-weight: 800; }

.mobile-tabs { display: none; }

@media (max-width: 1120px) {
  .app-shell { grid-template-columns: 72px minmax(0, 1fr); }
  .divider, .assistant-panel { display: none; }
  .assistant-panel.open {
    display: block;
    position: fixed;
    inset: auto 0 0;
    height: 78vh;
    z-index: 20;
    border-top: 1px solid var(--line);
    border-left: 0;
    border-radius: 12px 12px 0 0;
  }
  .content-grid { grid-template-columns: minmax(0, 1fr); }
  .shelf-column { order: -1; }
  .filters { grid-template-columns: repeat(4, minmax(120px, 1fr)); }
}

@media (max-width: 760px) {
  .app-shell { display: block; padding-bottom: 66px; }
  .nav-rail { display: none; }
  .workspace { padding: 16px; }
  h1 { font-size: 23px; }
  .topbar, .reader-header, .page-header { display: grid; }
  .script-switch { justify-self: start; }
  .search-line { grid-template-columns: 1fr; }
  .segmented, .tabs, .review-toolbar { width: 100%; overflow: auto; }
  .filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-card { grid-template-columns: 58px minmax(0, 1fr); }
  .thumb { min-height: 76px; }
  .card-actions { opacity: 1; }
  .reader-layout, .scan-pair, .flow-layout, .form-grid { grid-template-columns: 1fr; }
  .reader-tools { align-items: stretch; flex-direction: column; }
  .scan-preview { min-height: 180px; }
  .document-text { min-height: 320px; padding: 16px; font-size: 17px; }
  .mobile-tabs {
    position: fixed;
    z-index: 30;
    bottom: 0;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #111a17;
    border-top: 1px solid rgba(255,255,255,.12);
  }
  .mobile-tabs button {
    border: 0;
    background: transparent;
    color: rgba(255,255,255,.68);
    min-height: 62px;
    display: grid;
    place-items: center;
    font-weight: 800;
  }
  .mobile-tabs button.active { color: #fff9ee; background: rgba(255,255,255,.1); }
  .mobile-tabs span { font-size: 11px; }
}