:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #151515;
  --bg: #f0f2f5;
  --border: #e5e7eb;
  --blue: #2563eb;
  --tab-bg: #1e293b;
  --tab-item: #2d3f55;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; }
body { display: flex; flex-direction: column; background: var(--bg); }

/* ── Topbar ── */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; padding: 11px 22px;
  background: #111827; color: white; flex-shrink: 0;
}
.topbar h1 { margin: 2px 0 0; font-size: 20px; }
.brand { min-width: 0; }
.brand-subtitle { margin-top: 2px; color: #94a3b8; font-size: 11px; }
.eyebrow { font-size: 10px; letter-spacing: .14em; color: #93c5fd; font-weight: 700; }
.topbar-actions { display: flex; align-items: center; gap: 9px; }
.studio-link {
  padding: 6px 11px; border: 1px solid #475569; border-radius: 7px;
  color: #e2e8f0; text-decoration: none; font-size: 11px; font-weight: 700;
}
.studio-link:hover { border-color: #93c5fd; color: white; }
.health { border-radius: 999px; padding: 6px 12px; font-weight: 700; font-size: 11px; text-align: right; }
.health.ok      { background: #064e3b; color: #a7f3d0; }
.health.bad     { background: #7f1d1d; color: #fecaca; }
.health.pending { background: #374151; color: #d1d5db; }

/* ── Workspace ── */
.workspace { flex: 1; min-height: 0; display: flex; flex-direction: column; }

/* ── Tabbar ── */
.tabbar {
  display: flex; align-items: flex-end;
  background: var(--tab-bg); padding: 6px 8px 0;
  gap: 3px; overflow-x: auto; flex-shrink: 0;
  scrollbar-width: none;
}
.tabbar::-webkit-scrollbar { display: none; }
.tabs { display: flex; gap: 3px; align-items: flex-end; }

.tab {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 11px; background: var(--tab-item);
  color: #94a3b8; border: none; border-radius: 7px 7px 0 0;
  cursor: pointer; font-size: 12px; font-family: inherit;
  white-space: nowrap; transition: background .12s;
}
.tab:hover { background: #3d5068; color: #e2e8f0; }
.tab.active { background: var(--bg); color: #0f172a; }

.tab-name { max-width: 150px; overflow: hidden; text-overflow: ellipsis; }
.tab-st { font-size: 11px; flex-shrink: 0; }
.tab-st.done       { color: #4ade80; }
.tab-st.error      { color: #f87171; }
.tab-st.processing { color: #fbbf24; }
.tab-st.pending    { color: #64748b; }
.tab.active .tab-st.done  { color: #16a34a; }
.tab.active .tab-st.error { color: #dc2626; }

.tab-close {
  flex-shrink: 0; width: 15px; height: 15px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 3px; font-size: 13px; line-height: 1; opacity: .45;
}
.tab-close:hover { opacity: 1; background: rgba(255,255,255,.15); }
.tab.active .tab-close:hover { background: #dde3ea; color: #ef4444; opacity: 1; }

.btn-add {
  display: flex; align-items: center;
  padding: 7px 14px; align-self: flex-end;
  background: transparent; color: #64748b;
  border: 1px dashed #3d5068; border-radius: 7px 7px 0 0;
  cursor: pointer; font-size: 12px; font-family: inherit;
  white-space: nowrap; transition: color .12s;
}
.btn-add:hover { color: #94a3b8; border-color: #64748b; }
.btn-add input { display: none; }

/* ── Main area ── */
.main-area { flex: 1; min-height: 0; display: flex; overflow: hidden; }
.hidden { display: none !important; }

/* Empty workspace */
.empty-ws {
  flex: 1; display: flex; align-items: center; justify-content: center;
}
.dropzone-big {
  display: flex; flex-direction: column; align-items: center;
  width: 460px; max-width: 90vw; padding: 52px 32px;
  border: 2px dashed #94a3b8; border-radius: 16px;
  background: white; cursor: pointer; text-align: center;
  transition: border-color .15s, background .15s;
}
.dropzone-big:hover { border-color: var(--blue); background: #eff6ff; }
.dropzone-big input { display: none; }
.dz-icon  { font-size: 36px; margin-bottom: 14px; }
.dz-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.dz-sub   { color: #64748b; font-size: 13px; line-height: 1.6; }

/* ── Viewer pane ── */
.viewer-pane {
  flex: 1; min-width: 0; overflow: hidden;
  background: #1a2233; display: flex; flex-direction: column;
}
.file-viewer {
  flex: 1; min-height: 0; display: flex; flex-direction: column;
}
.pdf-frame {
  flex: 1; min-height: 0; width: 100%; border: none; display: block;
}

/* ── PDF.js canvas viewer ── */
.pdf-pages {
  flex: 1; min-height: 0; overflow-y: auto; overflow-x: auto;
  background: #1a2233; padding: 16px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.pdf-page {
  position: relative; flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,.55);
}
.pdf-page canvas { display: block; }
.bbox-overlay {
  position: absolute; top: 0; left: 0;
  pointer-events: none;
}

/* ── BBox legend ── */
.bbox-legend {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  padding: 7px 16px; background: rgba(0,0,0,.55); flex-shrink: 0;
}
.legend-item {
  display: flex; align-items: center; gap: 5px;
  font-size: 10px; color: #cbd5e1; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase;
}
.legend-dot { width: 9px; height: 9px; border-radius: 2px; flex-shrink: 0; }
.img-preview {
  flex: 1; min-height: 0; width: 100%; height: 100%;
  object-fit: contain; padding: 16px; display: block;
}
.file-placeholder {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: #94a3b8; gap: 10px;
}
.file-placeholder .f-icon { font-size: 52px; }
.file-placeholder .f-name { font-size: 15px; font-weight: 600; color: #e2e8f0; }
.file-placeholder .f-size { font-size: 12px; }

/* ── Results pane ── */
.results-pane {
  width: min(640px, 52vw); flex-shrink: 0; overflow-y: auto;
  background: white; border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
}

.results-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 12px 16px;
  border-bottom: 1px solid var(--border); flex-shrink: 0;
  position: sticky; top: 0; background: white; z-index: 2;
}
.results-filename {
  font-weight: 700; font-size: 12px; color: #64748b;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.toolbar-actions { display: flex; gap: 6px; flex-shrink: 0; }
.btn-secondary {
  flex-shrink: 0; border: 1px solid var(--border); border-radius: 7px;
  padding: 5px 11px; background: white; font-family: inherit;
  font-size: 12px; cursor: pointer; font-weight: 600; color: #374151;
}
.btn-secondary:hover:not(:disabled) { background: #f8fafc; }
.btn-secondary:disabled { opacity: .35; cursor: not-allowed; }

/* States */
.state-box { padding: 28px 16px; text-align: center; color: #64748b; }
.state-box p { margin: 6px 0; font-size: 14px; }
.state-error {
  color: #991b1b; background: #fef2f2; margin: 12px 16px; border-radius: 8px;
  border: 1px solid #fecaca; text-align: left; white-space: pre-wrap;
  padding: 12px; font-size: 13px;
}

/* Progress bar */
.progress { height: 3px; background: #e5e7eb; border-radius: 999px; overflow: hidden; margin: 0 16px 10px; }
.progress div { width: 35%; height: 100%; background: var(--blue); animation: load 1.1s infinite ease-in-out; }
@keyframes load { from { transform: translateX(-110%); } to { transform: translateX(310%); } }

/* ── Result content ── */
#results { flex: 1; }

.metric-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
}
.metric { padding: 11px; border-radius: 8px; background: #f8fafc; border: 1px solid #e2e8f0; }
.metric .label { color: #64748b; font-size: 10px; text-transform: uppercase; letter-spacing: .05em; }
.metric .value { font-size: 15px; font-weight: 800; margin-top: 3px; word-break: break-word; }

.result-section { padding: 16px 16px 0; }
.result-section h3 {
  margin: 0 0 10px; font-size: 11px;
  text-transform: uppercase; letter-spacing: .08em; color: #94a3b8;
}
.section-heading {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; margin-bottom: 10px;
}
.section-heading h3 { margin-bottom: 0; }
.section-hint { max-width: 62%; color: #94a3b8; font-size: 10px; text-align: right; line-height: 1.35; }

.review-panel {
  margin: 14px 16px 0; padding: 12px 14px;
  border: 1px solid #fcd34d; border-radius: 9px; background: #fffbeb;
}
.review-panel h3 { color: #92400e; margin-bottom: 7px; }
.review-panel ul { margin: 0; padding-left: 18px; color: #78350f; font-size: 11px; line-height: 1.5; }

.kv-grid { display: grid; grid-template-columns: 1fr 1fr; }
.kv { border-bottom: 1px solid #f1f5f9; padding: 7px 4px; }
.kv .k { color: #94a3b8; font-size: 10px; text-transform: uppercase; letter-spacing: .04em; }
.kv .v { font-weight: 600; margin-top: 2px; word-break: break-word; font-size: 13px; }

.cards { display: grid; grid-template-columns: 1fr; gap: 8px; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 10px; }
.card .role { text-transform: uppercase; letter-spacing: .08em; font-size: 9px; color: var(--blue); font-weight: 800; }
.card .name { font-weight: 700; margin: 4px 0 2px; font-size: 12px; }
.card .addr { white-space: pre-wrap; color: #334155; font-size: 11px; line-height: 1.5; }
.muted { color: #94a3b8; font-size: 10px; margin-top: 3px; }

.info-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.info-card {
  border: 1px solid var(--border); border-radius: 9px; padding: 11px;
  background: #fff;
}
.info-card .card-title { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.info-card .card-value { margin-top: 6px; font-size: 14px; font-weight: 800; word-break: break-all; }
.info-card .card-meta { margin-top: 6px; color: #64748b; font-size: 10px; line-height: 1.45; }
.status-badge {
  display: inline-flex; align-items: center; border-radius: 999px;
  padding: 3px 7px; background: #eef2ff; color: #3730a3;
  font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em;
}
.status-badge.derived { background: #fff7ed; color: #9a3412; }
.status-badge.verified { background: #ecfdf5; color: #047857; }
.cell-primary { font-weight: 700; color: #1e293b; }
.cell-sub { margin-top: 2px; color: #64748b; font-size: 9px; line-height: 1.35; }
.tag-list { display: flex; flex-wrap: wrap; gap: 3px; }
.tag {
  display: inline-flex; padding: 2px 5px; border-radius: 4px;
  background: #eff6ff; color: #1d4ed8; font-size: 9px; font-weight: 700;
}
.tag.derogation { background: #f5f3ff; color: #6d28d9; }
.tag.charge { background: #fff7ed; color: #9a3412; }

.table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 11px; }
.wide-table { min-width: 760px; }
#linesTable { min-width: 980px; }
th { background: #f8fafc; text-align: left; color: #64748b; font-size: 10px; text-transform: uppercase; letter-spacing: .04em; position: sticky; top: 0; }
th, td { padding: 7px 9px; border-bottom: 1px solid #f1f5f9; vertical-align: top; }
tr:last-child td { border-bottom: none; }

.json-details { padding: 14px 16px; }
.json-details summary { cursor: pointer; font-size: 12px; font-weight: 700; color: #94a3b8; padding: 4px 0; }
pre {
  max-height: 380px; max-width: 100%; overflow: auto;
  background: #0f172a; color: #e2e8f0; border-radius: 8px;
  padding: 14px; font-size: 11px; margin: 8px 0 0;
}

/* ── Drag overlay ── */
.drag-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(37,99,235,.12); border: 3px dashed var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 800; color: var(--blue);
  pointer-events: none;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .main-area { flex-direction: column; }
  .viewer-pane { flex: none; height: 42vh; }
  .results-pane { width: 100%; flex: 1; border-left: none; border-top: 1px solid var(--border); }
}
@media (max-width: 640px) {
  .topbar { padding: 10px 14px; }
  .topbar h1 { font-size: 17px; }
  .eyebrow { display: none; }
  .brand-subtitle { display: none; }
  .viewer-pane { height: 35vh; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .kv-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .info-card-grid { grid-template-columns: 1fr; }
  .section-heading { display: block; }
  .section-hint { display: block; max-width: none; margin-top: -5px; text-align: left; }
  .results-toolbar { align-items: flex-start; }
  .toolbar-actions { flex-direction: column; }
}