:root {
  --ink:#16202a; --muted:#5a6b7b; --rule:#e2e7ec; --accent:#0b6b5e;
  --accent-soft:#e6f1ef; --bg:#f5f6f4; --card:#ffffff;
}
* { box-sizing:border-box; }
body { margin:0; background:var(--bg); color:var(--ink);
  font-family:"Source Sans 3","Segoe UI",system-ui,sans-serif; }
a { color:var(--accent); text-decoration:none; }
a:hover { text-decoration:underline; }
.muted { color:var(--muted); }

.topbar { display:flex; align-items:center; gap:24px; padding:0 24px; height:56px;
  background:var(--card); border-bottom:1px solid var(--rule); position:sticky; top:0; z-index:10; }
.brand { font-weight:700; font-size:16px; color:var(--ink); }
.topbar nav { display:flex; gap:18px; }
.topbar nav a { font-weight:600; font-size:14px; }

.container { max-width:1000px; margin:0 auto; padding:28px 24px 60px; }
.page-head h1 { margin:0 0 4px; font-size:24px; }
.page-head .muted { margin:0 0 18px; }

.card-list { list-style:none; padding:0; margin:0; display:grid; gap:12px; }
.card { background:var(--card); border:1px solid var(--rule); border-radius:10px; padding:16px 18px; }
.card-title { font-size:17px; font-weight:700; }
.card-meta { margin-top:8px; display:flex; gap:12px; align-items:center; font-size:13px; }

.badge { font:600 11px/1 ui-monospace,monospace; text-transform:uppercase; letter-spacing:.06em;
  padding:4px 8px; border-radius:999px; background:#eef1f4; color:var(--muted); }
.badge-done { background:var(--accent-soft); color:var(--accent); }
.badge-ranking, .badge-generating { background:#fff4e0; color:#9a6b00; }
.badge-error { background:#fde8e8; color:#b42318; }

.search { display:flex; gap:10px; margin:6px 0 8px; }
.search input { flex:1; padding:10px 12px; border:1px solid var(--rule); border-radius:8px; font-size:15px; }
.search button { padding:10px 18px; border:none; border-radius:8px; background:var(--accent);
  color:#fff; font-weight:600; cursor:pointer; }
.search .clear { align-self:center; font-size:13px; }
.result-count { margin:4px 0 14px; font-size:13px; }

table.papers { width:100%; border-collapse:collapse; background:var(--card);
  border:1px solid var(--rule); border-radius:10px; overflow:hidden; }
table.papers th, table.papers td { text-align:left; padding:10px 14px; border-bottom:1px solid var(--rule);
  vertical-align:top; font-size:14px; }
table.papers th { background:#fafbfb; font-size:12px; text-transform:uppercase; letter-spacing:.05em; color:var(--muted); }
.col-thumb { width:72px; padding:8px 10px; vertical-align:middle; }
.thumb { width:64px; height:48px; object-fit:cover; border-radius:5px;
  border:1px solid var(--rule); display:block; background:#f0f2f0; }
.t-title-block { max-width:540px; }
.t-title { font-weight:600; }
.t-authors { font-size:13px; margin-top:2px; }

.reveal-row { background:#f8faf8; }
.reveal-cell { padding:0 !important; border-bottom:2px solid var(--accent-soft) !important; }
.reveal-content { padding:16px 18px; }
.snippet-inner { display:flex; flex-direction:column; gap:10px; }
.snippet-fig { max-height:160px; max-width:100%; object-fit:contain;
  border:1px solid var(--rule); border-radius:6px; align-self:flex-start; }
.snippet-takeaway { font-size:15px; font-weight:600; line-height:1.4;
  border-left:3px solid var(--accent); padding:8px 12px;
  background:var(--accent-soft); border-radius:0 5px 5px 0; margin:0; }
.snippet-abstract { font-size:14px; line-height:1.6; margin:0; }
.snippet-grid { display:grid; grid-template-columns:max-content 1fr; gap:4px 14px;
  margin:0; font-size:13px; }
.snippet-grid dt { font-weight:700; color:var(--muted); text-transform:uppercase;
  font-size:11px; letter-spacing:.06em; padding-top:3px; }
.snippet-grid dd { margin:0; line-height:1.5; }
.snippet-grid ul { margin:0; padding-left:16px; }
.snippet-grid li { margin-bottom:2px; }
.snippet-tags { display:flex; flex-wrap:wrap; gap:4px; }
.snippet-actions { display:flex; gap:8px; flex-wrap:wrap; margin-top:4px; }

.result-bar { display:flex; justify-content:space-between; align-items:center;
  margin:4px 0 12px; font-size:13px; }
.accent { color:var(--accent); }
.pagination { display:flex; align-items:center; gap:12px; margin-top:20px; }
.page-info { font-size:13px; }

.btn-back { display:inline-block; font:600 13px/1 inherit; color:var(--muted);
  border:1px solid var(--rule); border-radius:7px; padding:6px 12px;
  margin-bottom:14px; background:var(--card); text-decoration:none; }
.btn-back:hover { color:var(--ink); border-color:#b0bec5; text-decoration:none; }

.btn-link { display:inline-block; font:600 12px/1 inherit; padding:5px 12px;
  border-radius:6px; border:none; background:var(--accent); color:#fff;
  text-decoration:none; cursor:pointer; white-space:nowrap; }
.btn-link:hover { opacity:.88; text-decoration:none; }
.btn-link-secondary { background:transparent; color:var(--accent);
  border:1px solid var(--accent); }
.btn-link-secondary:hover { background:var(--accent-soft); }

.flash { background:#fff4e0; color:#9a6b00; border:1px solid #f0d9a8;
  border-radius:8px; padding:10px 14px; margin-bottom:16px; font-size:14px; }

.topic-form { display:grid; gap:14px; max-width:560px; background:var(--card);
  border:1px solid var(--rule); border-radius:10px; padding:20px; }
.topic-form label { display:grid; gap:6px; font-weight:600; font-size:14px; }
.topic-form input { padding:10px 12px; border:1px solid var(--rule); border-radius:8px; font-size:15px; }
.topic-form button { justify-self:start; padding:10px 20px; border:none; border-radius:8px;
  background:var(--accent); color:#fff; font-weight:600; cursor:pointer; }

.progress-box { background:var(--card); border:1px solid var(--rule); border-radius:10px; padding:20px; max-width:560px; }
.progress-track { height:12px; background:#eef1f4; border-radius:999px; overflow:hidden; margin:10px 0; }
.progress-bar { height:100%; background:var(--accent); transition:width .4s ease; }

.ranked { list-style:none; padding:0; margin:0; counter-reset:rank; display:grid; gap:10px; }
.ranked-row { display:flex; gap:16px; background:var(--card); border:1px solid var(--rule);
  border-radius:10px; padding:14px 16px; }
.rank-score { min-width:56px; text-align:center; }
.rank-score .score { display:inline-block; font:700 16px/1 ui-monospace,monospace; color:var(--accent);
  background:var(--accent-soft); border-radius:8px; padding:8px 0; width:44px; }
.rank-score .score-label { display:block; font-size:10px; color:var(--muted);
  text-transform:uppercase; letter-spacing:.06em; margin-top:4px; }
.rank-title { font-weight:700; font-size:16px; }
.rank-authors { font-size:13px; margin-top:2px; }
.rank-reason { font-size:13px; margin-top:6px; }
.rank-links { margin-top:10px; display:flex; gap:8px; flex-wrap:wrap; }

.papers-controls { display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-bottom:4px; }
.papers-controls .search { margin:0; flex:1; min-width:280px; }
.ga-filter { display:flex; align-items:center; gap:8px; font-size:14px;
  font-weight:600; cursor:pointer; white-space:nowrap; }
.ga-filter input { width:16px; height:16px; accent-color:var(--accent); cursor:pointer; }

.t-links { display:flex; gap:6px; flex-wrap:wrap; align-items:flex-start; }