/* EDITORIAL (default style) — print/magazine minimalism.
   Serif display headings, warm paper tones, hairline rules instead of card
   chrome, oxblood accent. Other styles: style-classic/mono/soft.css,
   selectable via the topbar dropdown or ?style=<name>. */
:root {
  --ink:#211c15; --muted:#7d7264; --rule:#ddd4c6; --accent:#88212f;
  --accent-soft:#f3e6e3; --bg:#faf7f1; --card:#faf7f1;
  --badge-bg:transparent; --warn-bg:#f5ecd9; --warn-ink:#8a6300;
  --error-bg:#f6e3e1; --error-ink:#9c2b1d; --reveal-bg:#f4efe6;
  --table-head:transparent; --thumb-bg:#efe9dd; --progress-track:#e9e2d4;
  --kw-pdf-ink:#39536b; --kw-pdf-bg:transparent;
  --serif:"Source Serif 4","Charter",Georgia,"Times New Roman",serif;
}
[data-theme="dark"] {
  --ink:#f4eedf; --muted:#c0b5a2; --rule:#4a4336; --accent:#eda6b1;
  --accent-soft:#3f2a2c; --bg:#1b1712; --card:#1b1712;
  --badge-bg:transparent; --warn-bg:#3d3318; --warn-ink:#e8cd7a;
  --error-bg:#422522; --error-ink:#f5b3aa; --reveal-bg:#26211a;
  --table-head:transparent; --thumb-bg:#2e271f; --progress-track:#332c23;
  --kw-pdf-ink:#a8c8e6; --kw-pdf-bg:transparent;
}
* { 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:baseline; gap:24px; padding:18px 28px 14px;
  background:var(--bg); border-bottom:2px solid var(--ink); position:sticky; top:0; z-index:10; }
.brand { font-family:var(--serif); font-weight:700; font-size:19px; color:var(--ink);
  letter-spacing:.01em; }
.topbar nav { display:flex; gap:20px; align-items:baseline; }
.topbar nav a { font-weight:600; font-size:13px; color:var(--ink);
  text-transform:uppercase; letter-spacing:.08em; }
.topbar nav a:hover { color:var(--accent); text-decoration:none; }

.container { max-width:960px; margin:0 auto; padding:36px 24px 80px; }
.page-head h1 { margin:0 0 6px; font-family:var(--serif); font-size:30px;
  font-weight:700; line-height:1.2; letter-spacing:-.01em; }
.page-head .muted { margin:0 0 22px; font-size:14px; }

.card-list { list-style:none; padding:0; margin:0; display:grid; gap:0; }
.card { background:none; border:none; border-top:1px solid var(--rule);
  border-radius:0; padding:18px 2px; }
.card:last-child { border-bottom:1px solid var(--rule); }
.card-title { font-family:var(--serif); font-size:19px; font-weight:700; color:var(--ink); }
.card-title:hover { color:var(--accent); }
.card-meta { margin-top:8px; display:flex; gap:14px; align-items:center; font-size:13px; }

.badge { font:600 10px/1 inherit; text-transform:uppercase; letter-spacing:.14em;
  padding:3px 0; border-radius:0; background:none; color:var(--muted);
  border-bottom:2px solid var(--rule); }
.badge-done { background:none; color:var(--accent); border-bottom-color:var(--accent); }
.badge-ranking, .badge-generating { background:none; color:var(--warn-ink); border-bottom-color:var(--warn-ink); }
.badge-error { background:none; color:var(--error-ink); border-bottom-color:var(--error-ink); }

.search { display:flex; gap:0; margin:8px 0 10px; }
.search input { flex:1; padding:11px 4px; border:none; border-bottom:2px solid var(--ink);
  border-radius:0; font-size:16px; background:transparent; color:var(--ink);
  font-family:var(--serif); }
.search input:focus { outline:none; border-bottom-color:var(--accent); }
.search input::placeholder { color:var(--muted); font-style:italic; }
.search button { padding:10px 22px; border:2px solid var(--ink); border-radius:0;
  background:var(--ink); color:var(--bg); font-weight:600; cursor:pointer;
  font-size:13px; text-transform:uppercase; letter-spacing:.1em; margin-left:14px; }
.search button:hover { background:var(--accent); border-color:var(--accent); }
.search .clear { align-self:center; font-size:13px; margin-left:12px; font-style:italic; }
.result-count { margin:4px 0 14px; font-size:13px; }

table.papers { width:100%; border-collapse:collapse; background:none;
  border:none; border-top:2px solid var(--ink); border-radius:0; }
table.papers th, table.papers td { text-align:left; padding:13px 10px; border-bottom:1px solid var(--rule);
  vertical-align:top; font-size:14px; }
table.papers th { background:none; font-size:11px; text-transform:uppercase;
  letter-spacing:.12em; color:var(--muted); border-bottom:1px solid var(--ink); }
.col-thumb { width:72px; padding:10px 8px; vertical-align:middle; }
.thumb { width:64px; height:48px; object-fit:cover; border-radius:0;
  border:1px solid var(--rule); display:block; background:var(--thumb-bg);
  filter:saturate(.85); }
.t-title-block { max-width:540px; }
.t-title { font-family:var(--serif); font-weight:600; font-size:15.5px; line-height:1.35; }
.t-title a { color:var(--ink); }
.t-title a:hover { color:var(--accent); }
.t-authors { font-size:13px; margin-top:3px; font-style:italic; }

.reveal-row { background:var(--reveal-bg); }
.reveal-cell { padding:0 !important; border-bottom:1px solid var(--rule) !important; }
.reveal-content { padding:18px 20px; }
.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:0; align-self:flex-start; }
.snippet-takeaway { font-family:var(--serif); font-size:16px; font-weight:600; line-height:1.45;
  border-left:2px solid var(--accent); padding:6px 16px;
  background:none; border-radius:0; margin:0; font-style:italic; }
.snippet-abstract { font-size:14px; line-height:1.65; margin:0; }
.snippet-grid { display:grid; grid-template-columns:max-content 1fr; gap:4px 16px;
  margin:0; font-size:13px; }
.snippet-grid dt { font-weight:700; color:var(--muted); text-transform:uppercase;
  font-size:10px; letter-spacing:.12em; padding-top:4px; }
.snippet-grid dd { margin:0; line-height:1.55; }
.snippet-grid ul { margin:0; padding-left:16px; }
.snippet-grid li { margin-bottom:2px; }
.snippet-tags { display:flex; flex-wrap:wrap; gap:10px; }
.snippet-actions { display:flex; gap:8px; flex-wrap:wrap; margin-top:4px; }

.result-bar { display:flex; justify-content:space-between; align-items:center;
  margin:6px 0 14px; font-size:13px; }
.accent { color:var(--accent); }
.pagination { display:flex; align-items:center; gap:8px; margin:16px 0 22px; flex-wrap:wrap; }
.page-info { font-size:13px; font-style:italic; }
.page-num { display:inline-block; min-width:28px; text-align:center; padding:5px 5px;
  border-radius:0; font-size:13px; font-weight:600; font-family:var(--serif); }
a.page-num:hover { color:var(--accent); text-decoration:none; border-bottom:2px solid var(--accent); }
.page-num-current { border-bottom:2px solid var(--ink); }
.page-gap { padding:0 2px; }
.empty-state { text-align:center; padding:36px 12px !important; color:var(--muted);
  font-family:var(--serif); font-style:italic; font-size:15px; }

.btn-back { display:inline-block; font:600 12px/1 inherit; color:var(--muted);
  border:none; border-radius:0; padding:6px 0; letter-spacing:.06em;
  margin-bottom:14px; background:none; text-decoration:none; text-transform:uppercase; }
.btn-back:hover { color:var(--accent); text-decoration:none; }

.btn-link { display:inline-block; font:600 11px/1 inherit; padding:6px 14px;
  border-radius:0; border:1px solid var(--ink); background:var(--ink); color:var(--bg);
  text-decoration:none; cursor:pointer; white-space:nowrap;
  text-transform:uppercase; letter-spacing:.08em; }
.btn-link:hover { background:var(--accent); border-color:var(--accent); text-decoration:none; }
.btn-link-secondary { background:transparent; color:var(--ink);
  border:1px solid var(--rule); }
.btn-link-secondary:hover { background:transparent; color:var(--accent); border-color:var(--accent); }

.flash { background:var(--warn-bg); color:var(--warn-ink); border:none;
  border-left:3px solid var(--warn-ink);
  border-radius:0; padding:12px 16px; margin-bottom:18px; font-size:14px; }
.flash-error { background:var(--error-bg); color:var(--error-ink); border-left-color:var(--error-ink); }

.topic-form { display:grid; gap:16px; max-width:560px; background:none;
  border:none; border-top:2px solid var(--ink); border-radius:0; padding:22px 0; }
.topic-form label { display:grid; gap:6px; font-weight:600; font-size:13px;
  text-transform:uppercase; letter-spacing:.08em; color:var(--muted); }
.topic-form input { padding:10px 4px; border:none; border-bottom:1px solid var(--ink);
  border-radius:0; font-size:16px; background:transparent; color:var(--ink);
  font-family:var(--serif); }
.topic-form input:focus { outline:none; border-bottom-color:var(--accent); }
.topic-form button { justify-self:start; padding:11px 26px; border:none; border-radius:0;
  background:var(--ink); color:var(--bg); font-weight:600; cursor:pointer;
  text-transform:uppercase; letter-spacing:.1em; font-size:12px; }
.topic-form button:hover { background:var(--accent); }

.progress-box { background:none; border:none; border-top:2px solid var(--ink);
  border-radius:0; padding:20px 0; max-width:560px; }
.progress-track { height:4px; background:var(--progress-track); border-radius:0; overflow:hidden; margin:12px 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:0; }
.ranked-row { display:flex; gap:18px; background:none; border:none;
  border-top:1px solid var(--rule); border-radius:0; padding:18px 2px; }
.ranked:first-child .ranked-row:first-child,
ol.ranked .ranked-row:first-child { border-top:2px solid var(--ink); }
.rank-score { min-width:56px; text-align:center; }
.rank-score .score { display:inline-block; font:700 20px/1 var(--serif); color:var(--accent);
  background:none; border-radius:0; padding:6px 0 4px; width:44px;
  border-bottom:2px solid var(--accent); }
.rank-score .score-label { display:block; font-size:9px; color:var(--muted);
  text-transform:uppercase; letter-spacing:.12em; margin-top:6px; }
.rank-title { font-family:var(--serif); font-weight:700; font-size:17px; line-height:1.3; }
.rank-title a { color:var(--ink); }
.rank-title a:hover { color:var(--accent); }
.rank-authors { font-size:13px; margin-top:3px; font-style:italic; }
.rank-reason { font-size:13.5px; margin-top:8px; line-height:1.55; }
.rank-links { margin-top:12px; display:flex; gap:8px; flex-wrap:wrap; }

.papers-controls { display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-bottom:6px; }
.papers-controls .search { margin:0; flex:1; min-width:280px; }
.summary-filter { display:flex; align-items:center; gap:8px; font-size:13px;
  font-weight:600; cursor:pointer; white-space:nowrap; text-transform:uppercase;
  letter-spacing:.06em; }
.summary-filter input { width:15px; height:15px; accent-color:var(--accent); cursor:pointer; }

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

.global-search { margin-bottom:32px; }

.venue-group { margin-bottom:36px; }
.venue-group:last-child { margin-bottom:0; }
.venue-group-title { margin:0 0 16px; font-family:var(--serif); font-size:22px;
  font-weight:700; color:var(--ink); }
.venue-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(280px, 1fr)); gap:0 36px; }
.venue-card { display:block; background:none; border:none; border-top:1px solid var(--rule);
  border-radius:0; padding:20px 2px 24px; text-decoration:none; color:inherit;
  transition:none; }
.venue-card:hover { border-top-color:var(--accent); box-shadow:none; text-decoration:none; }
.venue-card:hover h3 { color:var(--accent); }
.venue-card-head { display:flex; align-items:baseline; justify-content:space-between; gap:12px; }
.venue-card h3 { margin:0; font-family:var(--serif); font-size:21px; color:var(--ink); }
.venue-year { font:600 13px/1 var(--serif); color:var(--muted); font-style:italic; }
.venue-org { margin:6px 0 0; font-size:13px; font-style:italic; }
.venue-stats { margin-top:14px; display:flex; flex-direction:column; gap:4px;
  font-size:13px; color:var(--muted); }

.venue-badge { display:inline-block; font:600 10px/1 inherit;
  text-transform:uppercase; letter-spacing:.14em; color:var(--accent);
  background:none; border-radius:0; padding:2px 0;
  margin-bottom:6px; text-decoration:none; }
.venue-badge:hover { text-decoration:underline; }

.venue-actions { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:20px; }
.section-title { font-family:var(--serif); font-size:20px; margin:34px 0 14px;
  padding-bottom:8px; border-bottom:2px solid var(--ink); }
.section-title .muted { font-family:"Source Sans 3","Segoe UI",system-ui,sans-serif; }

.venue-select { padding:10px 8px; border:none; border-bottom:2px solid var(--ink); border-radius:0;
  font-size:14px; font-weight:600; background:transparent; color:var(--ink);
  cursor:pointer; min-width:140px; margin-left:10px; }
.result-actions { display:flex; align-items:center; gap:12px; }
.btn-sm { padding:4px 10px; font-size:10px; }

.keyword-cloud { display:flex; flex-wrap:wrap; gap:8px 16px; margin-bottom:8px; }
.kw-tag { display:inline-block; font-size:13.5px; font-weight:600; color:var(--accent);
  background:none; border:none; border-bottom:1px solid transparent; border-radius:0;
  padding:2px 0; text-decoration:none; font-family:var(--serif); }
.kw-tag:hover { border-bottom-color:var(--accent); text-decoration:none; }
.kw-tag-pdf { color:var(--kw-pdf-ink); background:none; }
.kw-tag-pdf:hover { border-bottom-color:var(--kw-pdf-ink); }
.kw-tag-ga { color:var(--accent); background:none; }
.kw-source { font-size:13px; font-weight:400; font-style:italic; }

.snippet-inner .tag { display:inline-block; font-size:11px; color:var(--accent);
  border:none; border-bottom:1px solid var(--accent); border-radius:0; padding:2px 0;
  margin:0 12px 6px 0; }

.author-input { flex:0 1 160px; min-width:120px; }
.paper-actions { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:24px; }
.paper-video { margin-bottom:28px; }
.paper-video-item + .paper-video-item { margin-top:22px; }
.paper-video-player { display:block; width:100%; max-width:960px;
  border-radius:0; border:1px solid var(--rule); background:#000; }
.paper-abstract { background:none; border:none; border-top:1px solid var(--rule);
  border-radius:0; padding:18px 0; font-size:16px; line-height:1.7;
  font-family:var(--serif); }
.paper-abstract p { margin:0; }
.related-list { margin-top:0; }
.summary-badge { margin-left:10px; vertical-align:middle; font-size:9px; }

.ai-summary { margin-bottom:32px; }
.summary-tags { margin-bottom:16px; }
.summary-figure { text-align:center; margin:0 0 20px; }
.summary-figure img { max-width:100%; max-height:280px; object-fit:contain;
  border:1px solid var(--rule); border-radius:0; }
.summary-figure span { display:block; font-size:12px; margin-top:8px; font-style:italic; }
.summary-takeaway { font-family:var(--serif); font-size:21px; line-height:1.5; font-weight:600;
  border-left:3px solid var(--accent); background:none;
  padding:4px 22px; border-radius:0; margin:0 0 24px; }
.summary-grid { display:grid; grid-template-columns:1fr 1fr; gap:22px 36px; }
@media (max-width:640px) { .summary-grid { grid-template-columns:1fr; } }
.summary-block { background:none; border:none; border-top:1px solid var(--rule);
  border-radius:0; padding:14px 0 0; }
.summary-block h3 { font:600 10px/1 inherit; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); margin:0 0 10px; }
.summary-block p { margin:0; font-size:14.5px; line-height:1.65; }
.summary-block ul { margin:0; padding-left:18px; }
.summary-block li { font-size:14.5px; line-height:1.6; margin-bottom:5px; }
.btn-bookmark.btn-bookmark-on { color:var(--accent); border-color:var(--accent); }
.nav-badge:empty { display:none; }
.nav-badge { display:inline-block; font:700 10px/1 inherit;
  background:var(--accent); color:var(--bg); border-radius:0; padding:2px 5px;
  margin-left:4px; vertical-align:middle; }
.btn-theme { font-size:16px; line-height:1; padding:4px 8px; border:none;
  border-radius:0; background:none; color:var(--muted); cursor:pointer; }
.btn-theme:hover { color:var(--accent); }
.style-select { margin-left:auto; padding:4px 2px; border:none;
  border-bottom:1px solid var(--rule); border-radius:0; background:transparent;
  color:var(--muted); font:600 11px/1.2 inherit; text-transform:uppercase;
  letter-spacing:.08em; cursor:pointer; }
.style-select:hover, .style-select:focus { color:var(--ink);
  border-bottom-color:var(--accent); outline:none; }
.btn-file { cursor:pointer; position:relative; }
.btn-file input { position:absolute; inset:0; opacity:0; cursor:pointer; }

.note-input { display:block; width:100%; max-width:420px; margin-top:6px;
  padding:5px 2px; font-size:13px; color:var(--ink); background:transparent;
  border:none; border-bottom:1px solid var(--rule); border-radius:0; font-style:italic; }
.note-input:focus { outline:none; border-bottom-color:var(--accent); }

.error-page { text-align:center; padding:70px 0; }
.error-page h1 { font-family:var(--serif); font-size:72px; margin:0 0 8px; color:var(--rule); }
.error-page p { margin:8px 0 22px; }
.error-page .btn-link { margin:0 4px; }

@media (max-width: 640px) {
  .topbar { flex-wrap:wrap; padding:12px 16px 10px; gap:8px 16px; }
  .topbar nav { flex-wrap:wrap; gap:10px 14px; align-items:center; }
  .container { padding:24px 16px 56px; }
  .papers-controls .search { flex-wrap:wrap; }
  .author-input { flex:1 1 120px; }
  table.papers thead { display:none; }
  table.papers, table.papers tbody, table.papers tr, table.papers td { display:block; }
  table.papers td { border-bottom:none; padding:3px 4px; }
  table.papers tr.paper-row { border-bottom:1px solid var(--rule); padding:12px 0; }
  .col-thumb { width:auto; }
  .col-thumb:empty { display:none; }
  .t-title-block { max-width:none; }
  .summary-takeaway { font-size:17px; }
}