:root {
  --bg: #f3f5fb;
  --surface: #ffffff;
  --surface-2: #f7f8fd;
  --text: #1a2140;
  --muted: #636d8c;
  --line: #e1e5f0;
  --primary: #4f46e5;
  --primary-strong: #4338ca;
  --primary-soft: #eceafd;
  --on-primary: #ffffff;
  --accent: #0d9488;
  --accent-soft: #dcf5f1;
  --hl: #fde68a;
  --hl-text: #1a2140;
  --danger: #c62828;
  --danger-soft: #fdecec;
  --shadow: 0 1px 2px rgba(26, 33, 64, .06), 0 6px 20px rgba(26, 33, 64, .06);
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1120; --surface: #161a2f; --surface-2: #1b2038; --text: #e7eafa;
    --muted: #98a1c0; --line: #272d4a; --primary: #8b93ff; --primary-strong: #a5abff;
    --primary-soft: #23285a; --on-primary: #0e1120; --accent: #2dd4bf; --accent-soft: #103b3a;
    --hl: #5c4a08; --hl-text: #fff3c4; --danger: #ff8a80; --danger-soft: #3b1c1f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  }
}
:root[data-theme="dark"] {
  --bg: #0e1120; --surface: #161a2f; --surface-2: #1b2038; --text: #e7eafa;
  --muted: #98a1c0; --line: #272d4a; --primary: #8b93ff; --primary-strong: #a5abff;
  --primary-soft: #23285a; --on-primary: #0e1120; --accent: #2dd4bf; --accent-soft: #103b3a;
  --hl: #5c4a08; --hl-text: #fff3c4; --danger: #ff8a80; --danger-soft: #3b1c1f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--primary-strong); }
h1 { font-size: 26px; line-height: 1.25; margin: 6px 0 14px; letter-spacing: -.015em; }
h2 { font-size: 17px; margin: 0 0 12px; letter-spacing: -.01em; }
h3 { font-size: 16px; margin: 0 0 6px; }
.muted { color: var(--muted); }
.hint { font-size: 13px; color: var(--muted); }

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px;
  letter-spacing: -.01em; text-decoration: none; color: var(--text);
}
.brand:hover { color: var(--text); }
.brand img { width: 32px; height: 32px; display: block; }
.topbar nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.topbar nav a { text-decoration: none; font-size: 15px; }
.badge {
  font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
}
.who { color: var(--muted); font-size: 14px; }

main { max-width: 1040px; margin: 0 auto; padding: 24px 20px 64px; }
body.reader main { max-width: 1680px; padding-top: 16px; padding-bottom: 24px; }

/* Surfaces */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-bottom: 18px; box-shadow: var(--shadow);
}
.narrow { max-width: 430px; margin: 36px auto; }

/* Forms */
label { display: block; font-size: 14px; font-weight: 500; margin: 14px 0 5px; color: var(--muted); }
input[type=text], input[type=email], input[type=password], input[type=url], input[type=number], textarea, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--surface-2); color: var(--text); font: inherit;
}
input:focus, textarea:focus, select:focus, button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--primary); outline-offset: 1px;
}
input[type=file] { font: inherit; color: var(--muted); max-width: 100%; }
textarea { min-height: 120px; resize: vertical; }

/* Buttons */
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px; border-radius: 9px; border: 1px solid var(--primary);
  background: var(--primary); color: var(--on-primary); font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; line-height: 1.2;
}
button:hover, .btn:hover { background: var(--primary-strong); border-color: var(--primary-strong); color: var(--on-primary); }
button.secondary, .btn.secondary {
  background: var(--surface); color: var(--text); border-color: var(--line); font-weight: 500;
}
button.secondary:hover, .btn.secondary:hover { background: var(--surface-2); color: var(--text); border-color: var(--muted); }
button.danger { background: transparent; color: var(--danger); border-color: var(--line); font-weight: 500; }
button.danger:hover { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
button.small, .btn.small { padding: 5px 11px; font-size: 14px; }
button:disabled { opacity: .55; cursor: default; }
.icon-btn {
  padding: 4px 8px; border-color: transparent; background: transparent; color: var(--muted);
  font-weight: 400; font-size: 16px;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); border-color: var(--line); }

/* Messages */
.msg { padding: 10px 12px; border-radius: 9px; margin: 12px 0; font-size: 14px; }
.msg.error { background: var(--danger-soft); color: var(--danger); }
.msg.ok { background: var(--accent-soft); color: var(--accent); }
.msg.warn { background: var(--primary-soft); color: var(--primary-strong); }

/* Landing */
.hero { text-align: center; padding: 44px 0 30px; }
.hero img { width: 76px; height: 76px; }
.hero h1 { font-size: 36px; margin: 16px auto 10px; max-width: 700px; }
.hero p { max-width: 560px; margin: 0 auto 22px; font-size: 18px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.feature h3 { color: var(--primary-strong); }
.plan .price { font-size: 26px; font-weight: 700; margin: 4px 0 8px; }
.plan ul { padding-left: 18px; margin: 0; color: var(--muted); }
h2.section { margin: 30px 0 14px; font-size: 20px; }

/* Library */
.page-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
table.docs { width: 100%; border-collapse: collapse; }
table.docs th, table.docs td { text-align: left; padding: 11px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.docs th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
table.docs tr:last-child td { border-bottom: 0; }
.doc-link { font-weight: 600; text-decoration: none; }
.doc-link:hover { text-decoration: underline; }
.actions { white-space: nowrap; text-align: right; }
.tag {
  display: inline-block; font-size: 11px; font-weight: 700; padding: 1px 7px; border-radius: 6px;
  background: var(--primary-soft); color: var(--primary-strong); margin-right: 4px;
}
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.progress { height: 6px; background: var(--line); border-radius: 4px; overflow: hidden; margin-top: 10px; }
.progress > div { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.inline-edit { display: flex; gap: 6px; }
.inline-edit input { padding: 6px 9px; }

/* Reader */
.doc-head { margin-bottom: 8px; }
.doc-head .back { font-size: 14px; text-decoration: none; }
.title-row { display: flex; align-items: center; gap: 6px; }
.title-row h1 { margin: 4px 0; font-size: 22px; }
.title-input { font-size: 20px; font-weight: 700; padding: 5px 9px; }
.doc-meta { margin: 0; font-size: 14px; color: var(--muted); }
.controls {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 8px 12px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 10px 0 12px;
  box-shadow: var(--shadow);
}
.controls label { margin: 0; display: inline-flex; align-items: center; gap: 6px; color: var(--text); font-weight: 400; }
.controls select { width: auto; max-width: 240px; padding: 6px 8px; }
.controls input[type=range] { width: 110px; accent-color: var(--primary); }
.controls .sep { width: 1px; align-self: stretch; background: var(--line); margin: 0 4px; }
.controls .status { margin-left: auto; font-size: 13px; color: var(--muted); }

.workspace {
  display: grid; grid-template-columns: var(--left, 46%) 12px minmax(0, 1fr);
  min-height: 480px; height: calc(100vh - 230px);
}
.pane {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); min-width: 0; min-height: 0; overflow: auto;
}
.pane-text { padding: 22px 26px; }
.pane-side { display: flex; flex-direction: column; overflow: hidden; }
.splitter { cursor: col-resize; position: relative; touch-action: none; }
.splitter::after {
  content: ""; position: absolute; left: 4px; top: 50%; width: 4px; height: 48px;
  margin-top: -24px; border-radius: 3px; background: var(--line);
}
.splitter:hover::after, .workspace.dragging .splitter::after { background: var(--primary); }
.workspace.dragging { user-select: none; }
.workspace.dragging iframe { pointer-events: none; }

.text-body { font-size: 19px; line-height: 1.75; max-width: 46em; margin: 0 auto; }
.text-body p { margin: 0 0 1em; }
.text-body .s { cursor: pointer; border-radius: 3px; }
.text-body .s:hover { background: var(--primary-soft); }
.text-body .s.active { background: var(--hl); color: var(--hl-text); }

.tabs { display: flex; gap: 2px; padding: 8px 8px 0; border-bottom: 1px solid var(--line); overflow-x: auto; flex: none; }
.tab {
  background: transparent; color: var(--muted); border: 0; border-bottom: 3px solid transparent;
  border-radius: 8px 8px 0 0; padding: 8px 14px; font-weight: 600; font-size: 14px; white-space: nowrap;
}
.tab:hover { background: var(--surface-2); color: var(--text); border-color: transparent; }
.tab.active { color: var(--primary-strong); border-bottom-color: var(--primary); background: transparent; }
.tabpanel { flex: 1; min-height: 0; overflow: auto; padding: 16px; }
.tabpanel[hidden] { display: none; }
.tabpanel.flush { padding: 0; display: flex; flex-direction: column; overflow: hidden; }
.tabpanel.flush[hidden] { display: none; }
.pdf-bar { display: flex; gap: 8px; align-items: center; padding: 8px 12px; border-bottom: 1px solid var(--line); flex: none; }
.pdf-bar .grow { flex: 1; }
.pdf-frame { flex: 1; width: 100%; border: 0; background: #fff; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }
.empty h3 { color: var(--text); }
.check { display: flex; align-items: center; gap: 9px; margin: 8px 0; color: var(--text); font-size: 15px; font-weight: 400; }
.check input { width: auto; accent-color: var(--primary); }

@media (max-width: 899px) {
  .workspace { display: block; height: auto; }
  .splitter { display: none; }
  .pane { margin-bottom: 14px; overflow: visible; }
  .pane-side { min-height: 520px; overflow: hidden; }
  .pdf-frame { min-height: 480px; }
  .pane-text { padding: 16px; }
  .topbar { padding: 10px 14px; }
}

/* Notes, research and files panels */
.quote-box, .note-quote {
  border-left: 3px solid var(--accent); background: var(--accent-soft); color: var(--text);
  padding: 8px 12px; border-radius: 0 8px 8px 0; font-size: 14px; margin: 0 0 10px;
  max-height: 110px; overflow: auto;
}
.note {
  border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 0 0 10px;
  background: var(--surface-2);
}
.note-body { white-space: pre-wrap; overflow-wrap: anywhere; }
.note-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 8px; font-size: 13px; color: var(--muted); }
.note-meta .grow { flex: 1; }
.linkbtn {
  background: transparent; border: 0; padding: 0; color: var(--primary); font-weight: 500; font-size: 13px;
  cursor: pointer; text-decoration: underline;
}
.linkbtn:hover { background: transparent; color: var(--primary-strong); }
.linkbtn.danger { color: var(--danger); }
.note textarea { min-height: 80px; }

.paper { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 0 0 10px; background: var(--surface-2); }
.paper h3 { font-size: 15px; margin: 0 0 4px; line-height: 1.35; }
.paper h3 a { text-decoration: none; }
.paper h3 a:hover { text-decoration: underline; }
.paper .by { font-size: 13px; color: var(--muted); }
.paper .links { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 8px; font-size: 13px; }
.chip { font-size: 11px; font-weight: 700; padding: 1px 7px; border-radius: 6px; background: var(--primary-soft); color: var(--primary-strong); }
.chip.oa { background: var(--accent-soft); color: var(--accent); }
.def-card { border: 1px solid var(--line); border-left: 3px solid var(--primary); border-radius: 10px; padding: 12px 14px; margin: 10px 0; background: var(--surface-2); }
.def-card h3 { margin: 0 0 2px; }
.def-card p { margin: 6px 0 0; }

.file-row { display: flex; align-items: center; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.file-row:last-child { border-bottom: 0; }
.file-row .name { flex: 1; min-width: 0; overflow-wrap: anywhere; font-weight: 500; }
.file-row .hint { white-space: nowrap; }

#sel-bar {
  position: fixed; z-index: 40; display: flex; gap: 2px; padding: 4px; border-radius: 10px;
  background: var(--text); box-shadow: 0 6px 24px rgba(0, 0, 0, .3);
}
#sel-bar[hidden] { display: none; }
#sel-bar button {
  background: transparent; border: 0; color: var(--bg); padding: 6px 12px; font-size: 14px; font-weight: 600; border-radius: 7px;
}
#sel-bar button:hover { background: rgba(127, 127, 127, .35); color: var(--bg); }

.controls label.switch { cursor: pointer; font-size: 14px; }
.controls label.switch input { accent-color: var(--primary); width: 16px; height: 16px; margin: 0; }

/* ---- Search, notes and citations ---- */
.topbar nav .quick-search { margin: 0; }
.quick-search input { width: 170px; padding: 6px 10px; font-size: 14px; }
.check.inline { display: inline-flex; margin: 0 14px 0 0; }
.search-form .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 4px 18px; margin-top: 6px; }
.adv { margin: 10px 0 14px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
.adv summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.chip {
  display: inline-block; font-size: 12px; padding: 2px 9px; border-radius: 999px; text-decoration: none;
  background: var(--primary-soft); color: var(--primary-strong); margin-right: 4px;
}
.chip-check { display: inline-flex; margin: 0; font-weight: 400; cursor: pointer; }
.chip-check input { position: absolute; opacity: 0; width: 0; height: 0; }
.chip-check span { font-size: 13px; padding: 3px 11px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); }
.chip-check small { color: var(--muted); }
.chip-check input:checked + span { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.chip-check input:checked + span small { color: inherit; }
.chip-check input:focus-visible + span { outline: 2px solid var(--primary); outline-offset: 2px; }
.result { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; margin-bottom: 10px; }
.result .pick { margin: 3px 0 0; }
.result .pick input, .col-pick input { width: auto; accent-color: var(--primary); }
.result-main { flex: 1; min-width: 0; }
.result .doc-link { font-weight: 600; font-size: 17px; }
.badges { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.snippet { margin: 8px 0 0; font-size: 14px; color: var(--muted); overflow-wrap: anywhere; }
.snippet a { color: inherit; text-decoration: none; }
mark { background: var(--hl); color: var(--hl-text); border-radius: 3px; padding: 0 1px; }
.pager { display: flex; gap: 14px; align-items: center; justify-content: center; margin: 18px 0; }
.col-pick { width: 32px; }
.group-head { margin: 22px 0 8px; font-size: 16px; }
.note-card { padding: 14px 16px; margin-bottom: 10px; }
.note-doc { font-weight: 600; margin-bottom: 6px; }
.note.flash, .note-card.flash { animation: rcflash 2.4s ease-out; }
@keyframes rcflash { 0% { box-shadow: 0 0 0 3px var(--primary); } 100% { box-shadow: 0 0 0 3px transparent; } }
.modal-back {
  position: fixed; inset: 0; background: rgba(10, 14, 30, .55); z-index: 50;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal-box {
  background: var(--surface); color: var(--text); border-radius: var(--radius); box-shadow: var(--shadow);
  width: min(720px, 100%); max-height: 88vh; overflow: auto; padding: 18px 20px;
}
.modal-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 6px; }
.modal-head h2 { margin: 0; }
.cite-out { margin: 10px 0; }
.cite-ref { margin: 12px 0 2px; padding: 10px 12px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 9px; overflow-wrap: anywhere; user-select: all; }
.cite-intext { margin: 0 0 6px; font-size: 13px; }
.cite-intext code { background: var(--primary-soft); padding: 1px 6px; border-radius: 5px; }
@media (max-width: 700px) { .quick-search input { width: 120px; } }

.tag.status-reading { background: var(--primary-soft); color: var(--primary-strong); }
.tag.status-read { background: var(--accent-soft); color: var(--accent); }
.chip.coll { background: var(--accent-soft); color: var(--accent); }

input[type="search"] {
  width: 100%; padding: 10px 12px; font: inherit; color: var(--text); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 9px;
}
input[type="search"]:focus { outline: 2px solid var(--primary); outline-offset: 0; border-color: transparent; }
.quick-search input[type="search"] { padding: 6px 10px; font-size: 14px; }
.search-form .row > input, .search-form .row > select { flex: 1 1 0; min-width: 0; }
.search-form .grid select { min-width: 0; }
.search-form input[type="date"] { padding: 8px 8px; font-size: 14px; }
.search-form .row > select[style*="width:auto"] { flex: 0 0 auto; }

/* ---- Icons, marks, categories ---- */
.icon-only { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; padding: 8px 10px; }
.icon-only.play { min-width: 46px; border-radius: 999px; }
.icon-btn.star { color: var(--muted); }
.icon-btn.star.on { color: #f5a623; }
.hl { border-radius: 3px; padding: 0 1px; color: inherit; }
.hl-yellow { background: rgba(250, 204, 21, .45); }
.hl-green { background: rgba(74, 222, 128, .40); }
.hl-blue { background: rgba(96, 165, 250, .40); }
.hl-pink { background: rgba(244, 114, 182, .40); }
.hl-orange { background: rgba(251, 146, 60, .42); }
mark.hl { cursor: pointer; }
.swatch { width: 18px; height: 18px; min-width: 0; padding: 0; border-radius: 50%; border: 2px solid transparent; cursor: pointer; }
.swatch.hl-yellow { background: #facc15; } .swatch.hl-green { background: #4ade80; } .swatch.hl-blue { background: #60a5fa; }
.swatch.hl-pink { background: #f472b6; } .swatch.hl-orange { background: #fb923c; }
.swatch.on { border-color: var(--text); }
.swatches { display: inline-flex; gap: 5px; }
#sel-bar .sel-swatches { display: inline-flex; gap: 6px; align-items: center; padding: 0 6px 0 8px; margin-left: 4px; border-left: 1px solid rgba(255, 255, 255, .25); }
#sel-bar .swatch { width: 16px; height: 16px; }
.s.bm { box-shadow: inset 3px 0 0 var(--primary); padding-left: 5px; }
.mark-card { padding: 10px 0; border-bottom: 1px solid var(--line); }
.mark-card.flash { animation: rcflash 2.4s ease-out; }
.mark-quote { margin: 0 0 6px; }
.mark-quote.hl-yellow, .mark-quote.hl-green, .mark-quote.hl-blue, .mark-quote.hl-pink, .mark-quote.hl-orange { border-radius: 6px; }
.mark-quote.bm-quote { border-left: 3px solid var(--primary); }
.cat-badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; margin-right: 4px; }
.cat-blue { background: #dbeafe; color: #1e40af; } .cat-green { background: #dcfce7; color: #166534; }
.cat-orange { background: #ffedd5; color: #9a3412; } .cat-pink { background: #fce7f3; color: #9d174d; }
.cat-purple { background: #ede9fe; color: #5b21b6; } .cat-red { background: #fee2e2; color: #991b1b; }
.cat-teal { background: #ccfbf1; color: #115e59; } .cat-gray { background: #e5e7eb; color: #374151; }
:root[data-theme="dark"] .cat-badge, :root:not([data-theme="light"]) .cat-badge.dk { filter: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .cat-badge { filter: brightness(.9) saturate(.9); } }
:root[data-theme="dark"] .cat-badge { filter: brightness(.9) saturate(.9); }
.cat-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 12px; }
.cat-chip { border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 999px; padding: 4px 12px; font-size: 13px; cursor: pointer; }
.cat-chip.on { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.cat-chip small { opacity: .7; }
.page-head { margin-bottom: 12px; }
.docs td.nowrap, .docs .col-size, .docs .col-date { white-space: nowrap; }
.star-col { width: 30px; }
.star-btn { background: transparent; border: 0; padding: 2px; color: var(--muted); cursor: pointer; line-height: 0; }
.star-btn.on { color: #f5a623; }
.star-btn:hover { background: transparent; color: #f5a623; }
details.add-panel > summary { cursor: pointer; font-weight: 600; font-size: 16px; }
details.add-panel[open] > summary { margin-bottom: 10px; }
.cat-row { display: flex; gap: 8px; align-items: center; margin: 6px 0; flex-wrap: nowrap; }
.cat-row input[type="text"] { flex: 1; min-width: 0; }
.cat-row select { width: auto; }

.add-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 8px 32px; }
.add-grid h2 { font-size: 15px; margin: 4px 0 6px; }
.chips-line { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.chips-line .cat-slot:empty { display: none; }
.page-head .row { gap: 10px; }
.docs tbody tr[hidden] { display: none; }

.paper.card { padding: 14px 16px; margin-bottom: 10px; }
.paper h3 { margin: 0 0 4px; font-size: 16px; }
.paper .by { color: var(--muted); font-size: 14px; }
.paper .links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 6px; }
.paper-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; }

/* Category selectors */
.row-cat { width: auto; max-width: 170px; padding: 2px 22px 2px 9px; font-size: 12px; font-weight: 600; border-radius: 999px; border: 1px solid var(--line); background-color: var(--surface); color: var(--muted); }
.row-cat[class*=" cat-"] { border-color: transparent; }
select.row-cat.cat-blue { background-color: #dbeafe; color: #1e40af; }
select.row-cat.cat-green { background-color: #dcfce7; color: #166534; }
select.row-cat.cat-orange { background-color: #ffedd5; color: #9a3412; }
select.row-cat.cat-pink { background-color: #fce7f3; color: #9d174d; }
select.row-cat.cat-purple { background-color: #ede9fe; color: #5b21b6; }
select.row-cat.cat-red { background-color: #fee2e2; color: #991b1b; }
select.row-cat.cat-teal { background-color: #ccfbf1; color: #115e59; }
select.row-cat.cat-gray { background-color: #e5e7eb; color: #374151; }

/* Profile and billing */
a.badge, a.who { text-decoration: none; }
a.who:hover { text-decoration: underline; }
.profile-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin-bottom: 16px; }
.profile-grid > .card { margin-bottom: 0; }
.plan-line { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.meter-row { margin-bottom: 14px; }
.meter-top { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; margin-bottom: 4px; }
.meter { height: 8px; border-radius: 999px; background: var(--line); overflow: hidden; }
.meter > div { height: 100%; background: var(--primary); border-radius: 999px; }
.meter.warn > div { background: #d97706; }
.meter.full > div { background: #dc2626; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; margin: 16px 0 12px; }
.stats > div { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; }
.stats dt { font-size: 12px; color: var(--muted); }
.stats dd { margin: 2px 0 0; font-size: 20px; font-weight: 700; }
.plan-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.plan-card { border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.plan-card.current { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary) inset; }
.plan-card h3 { margin: 0 0 6px; display: flex; gap: 8px; align-items: center; }
.plan-price { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.plan-price small { font-size: 14px; font-weight: 400; color: var(--muted); }
.plan-card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.notice-ok { border-color: #16a34a; }

/* Network */
.avatar { --h: 220; display: inline-flex; align-items: center; justify-content: center; flex: none; width: 44px; height: 44px; border-radius: 50%; font-weight: 700; font-size: 16px; color: #fff; background: hsl(var(--h), 55%, 42%); }
.avatar { overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.avatar.sm { width: 24px; height: 24px; font-size: 11px; }
.avatar.lg { width: 84px; height: 84px; font-size: 30px; }
.person-card { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--line); }
.person-card:last-child { border-bottom: 0; }
.person-main { flex: 1; min-width: 0; }
.person-name { font-weight: 700; }
.person-act { flex: none; }
.pub-paper { padding: 12px 0; border-bottom: 1px solid var(--line); }
.pub-paper:last-child { border-bottom: 0; }
.pub-who { display: flex; gap: 8px; align-items: center; margin-bottom: 4px; font-size: 14px; }
.pub-title { font-weight: 600; }
.pub-act { margin-top: 6px; }
.tabbar { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 14px; border-bottom: 1px solid var(--line); }
.tabbar a { padding: 8px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabbar a.on { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.researcher-head { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.researcher-main { flex: 1; min-width: 240px; }
.researcher-act { display: flex; gap: 8px; align-items: flex-start; }
.bio { margin: 10px 0; }
.more-menu { position: relative; }
.more-menu > summary { list-style: none; cursor: pointer; }
.more-menu > summary::-webkit-details-marker { display: none; }
.menu-pop { position: absolute; right: 0; top: 40px; width: 280px; z-index: 20; margin: 0; }
.menu-pop hr { border: 0; border-top: 1px solid var(--line); margin: 10px 0; }
.notice-warn { border-color: #d97706; }
.tag-public { background: #dcfce7; color: #166534; }

/* Groups */
.group-row { display: flex; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.group-row:last-child { border-bottom: 0; }
.group-row .grow, .invite-card .grow { flex: 1; min-width: 0; }
.invite-card { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; border-color: var(--primary); }
.pick-list { max-height: 260px; overflow: auto; border: 1px solid var(--line); border-radius: 10px; padding: 6px 10px; margin: 8px 0; }
.pick-row { display: flex; gap: 8px; align-items: flex-start; margin: 6px 0; }
.pick-row .hint { display: block; }
.comment { padding: 10px 0; border-bottom: 1px solid var(--line); }
.comment-head { display: flex; gap: 8px; align-items: center; }
.comment-head .linkbtn { margin-left: auto; }
.comment-body { margin: 4px 0 0 32px; }
.comment-form { margin-top: 14px; }
.note-card-plain { padding: 10px 0; border-bottom: 1px solid var(--line); }
.note-card-plain:last-child { border-bottom: 0; }
#inv-msg input[type=text] { margin: 6px 0; }
section.card h3 { margin: 20px 0 6px; }

/* Admin panel */
.admin-nav { display: flex; gap: 4px; flex-wrap: wrap; margin: 0 0 16px; border-bottom: 1px solid var(--line); }
.admin-nav a { padding: 8px 14px; border-radius: 8px 8px 0 0; color: var(--muted); text-decoration: none; font-weight: 600; }
.admin-nav a:hover { color: var(--text); }
.admin-nav a.on { color: var(--primary-strong); box-shadow: inset 0 -2px 0 var(--primary); }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th { text-align: left; font-size: 12px; color: var(--muted); font-weight: 600; padding: 6px 10px 6px 0; border-bottom: 1px solid var(--line); white-space: nowrap; }
.admin-table td { padding: 8px 10px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.admin-table tr:last-child td { border-bottom: 0; }
.admin-table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.admin-filter { align-items: center; gap: 8px; flex-wrap: wrap; }
.admin-filter input[type=search] { flex: 1 1 220px; min-width: 0; }

.verify-banner { background: var(--primary-soft); color: var(--primary-strong); padding: 10px 14px; border-radius: 10px; margin: 0 0 16px; font-size: 14px; }
.verify-banner a { font-weight: 600; }

/* Highlight colour dots inside the selection toolbar (must outrank the toolbar button rule). */
#sel-bar .swatch { padding: 0; width: 18px; height: 18px; border: 2px solid rgba(255, 255, 255, .35); border-radius: 50%; }
#sel-bar .swatch:hover { border-color: #fff; }
#sel-bar .swatch.hl-yellow { background: #facc15; }
#sel-bar .swatch.hl-green { background: #4ade80; }
#sel-bar .swatch.hl-blue { background: #60a5fa; }
#sel-bar .swatch.hl-pink { background: #f472b6; }
#sel-bar .swatch.hl-orange { background: #fb923c; }

.plan-buy { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.plan-buy button { width: 100%; }
.plan-buy button[hidden] { display: none; }

/* Details form: save bar stays in view while the form scrolls */
.details-bar { position: sticky; top: -16px; z-index: 6; display: flex; align-items: center; gap: 12px; padding: 10px 16px; margin: -16px -16px 12px; background: var(--surface); border-bottom: 1px solid var(--line); }
.details-bar .hint { margin: 0; }
.details-bar button { flex: none; white-space: nowrap; }
.btn.disabled, .btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }

/* Account card on the profile page */
.account-top { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.avatar-wrap { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.avatar.xl { width: 96px; height: 96px; font-size: 34px; }
.avatar-wrap .linkbtn { font-size: 13px; }
.account-main h2 { margin: 0 0 2px; }
.account-main .plan-line { margin: 8px 0 0; }
.li-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.li-row input { flex: 1 1 200px; min-width: 0; }
a.who .avatar { vertical-align: middle; margin-right: 4px; }