/* Layered PDF Viewer UI v10 (fix: layout + panels not exploding) */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --accent:#2563eb;
  --shadow:0 10px 25px rgba(2,6,23,.08);
  --radius:16px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);overflow:hidden}

/* Top bar */
.topbar{
  position:sticky;top:0;z-index:20;
  display:flex;gap:14px;align-items:flex-end;justify-content:space-between;
  padding:12px 14px;
  background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,255,255,.86));
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(1.2) blur(10px);
}
.brandtext{display:flex;flex-direction:column;gap:2px;min-width:220px}
.title{font-weight:900;letter-spacing:.2px}
.subtitle{font-size:12px;color:var(--muted)}
.toolbar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:end;justify-content:flex-end;
  min-width:0;
}
.field{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--muted);min-width:220px}
select{
  height:36px;min-width:220px;padding:0 10px;border:1px solid var(--line);border-radius:12px;background:var(--card);
  color:var(--ink);outline:none;
}
.btnrow{display:flex;gap:8px;align-items:center}
.btn{
  height:36px;padding:0 12px;border-radius:12px;border:1px solid var(--line);
  background:var(--card);cursor:pointer;font-weight:700;
}
.btn:hover{border-color:#cbd5e1}
.btn.ghost{background:transparent}
.pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:28px;padding:0 10px;border-radius:999px;
  background:rgba(37,99,235,.10);color:var(--accent);
  font-weight:800;font-size:12px;
}
.filebtn{position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:8px}
.filebtn input{position:absolute;inset:0;opacity:0;cursor:pointer}
.searchbar{display:flex;gap:8px;align-items:center;min-width:min(520px, 100%)}
.searchbar input{
  height:36px;flex:1;min-width:180px;
  padding:0 12px;border:1px solid var(--line);border-radius:12px;background:var(--card);
  outline:none;
}

/* Main layout */
.layout{
  display:grid;
  grid-template-columns: 360px 360px 1fr;
  gap:12px;
  padding:12px;
  height:calc(100vh - 70px);
  min-height:0;
}
.layout.no-panels{grid-template-columns: 1fr;}
.layout.one-panel{grid-template-columns: 360px 1fr;}

/* Panels */
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;
  overflow:hidden;
  min-height:0;
}
.hidden{display:none}
.panelhead{padding:14px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.paneltitle{font-weight:900}
.small{font-size:12px}
.layerActions{display:flex;gap:8px;flex-wrap:wrap}
.smallbtn{height:32px;font-size:12px;font-weight:800}
.search{
  height:36px;padding:0 10px;border:1px solid var(--line);border-radius:12px;outline:none;
}
.layersList, .searchResults{padding:10px;overflow:auto;min-height:0}
.layerRow{
  display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:14px;border:1px solid transparent;
}
.layerRow:hover{border-color:var(--line);background:#fafbff}
.layerName{font-weight:800;font-size:13px;line-height:1.2}
.layerMeta{font-size:12px;color:var(--muted);font-family:var(--mono)}
.layerRow input{margin-top:2px}
.muted{color:var(--muted);font-size:12px}

/* Viewer */
.viewer{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;
  overflow:hidden;
  min-height:0;
}
.status{padding:10px 14px;border-bottom:1px solid var(--line)}
.scrollWrap{overflow:auto;height:100%;background:linear-gradient(180deg, #f8fafc, #f1f5f9)}
.pages{padding:14px 0}
.pageCard{
  width:min(1400px, calc(100% - 28px));
  margin:0 auto 16px auto;
  background:white;border-radius:14px;
  box-shadow:0 6px 20px rgba(2,6,23,.10);
  border:1px solid rgba(226,232,240,.9);
  overflow:hidden;
}
.pageHeader{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 12px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, rgba(248,250,252,.95), rgba(241,245,249,.92));
  font-size:12px;color:var(--muted);font-family:var(--mono);
}
.pageCanvasWrap{overflow:auto}
.pageCanvas{display:block;height:auto;max-width:none}

.resultItem{
  padding:10px;border-radius:14px;border:1px solid transparent;cursor:pointer;
}
.resultItem:hover{border-color:var(--line);background:#fafbff}
.resultTitle{font-weight:900;font-size:13px}
.resultSnippet{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.35}

/* Responsive: panels become drawers */
@media (max-width: 1050px){
  body{overflow:auto}
  .layout{grid-template-columns: 1fr;height:auto}
  .panel{
    position:fixed;left:12px;top:76px;bottom:12px;z-index:30;
    width:min(360px, calc(100% - 24px));
  }
  #searchPanel{left:calc(12px + min(360px, calc(100% - 24px)) + 12px)}
}