/* ResearchBoard — design tokens */
:root {
  color-scheme: light;
  --bg: #eef3fa;
  --panel: #ffffff;
  --panel-2: #f5f8fd;
  --hero: #e3edfb;
  --line: #dfe6f0;
  --grid: #edf1f7;
  --text: #0e1a2b;
  --text-2: #4a5568;
  --muted: #7a8699;
  --accent: #2a78d6;
  --accent-strong: #1d5fb8;
  --accent-soft: #e6f0fd;
  --accent-fill: rgba(42, 120, 214, 0.12);
  --violet: #6250d6;
  --violet-soft: #ece9fb;
  --up: #12823f;
  --down: #c8372f;
  --top: #0d1f3c;
  --top-2: #16305a;
  --top-text: #ffffff;
  --top-muted: #a9bad6;
  --shadow: 0 1px 2px rgba(16, 32, 64, .05), 0 4px 16px rgba(16, 32, 64, .05);
  --radius: 14px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --map-0: #edf1f7;
  --map-1: #cde2fb; --map-2: #9ec5f4; --map-3: #6da7ec; --map-4: #3987e5;
  --map-5: #256abf; --map-6: #184f95; --map-7: #0d366b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0b1220; --panel: #121b2c; --panel-2: #172238; --hero: #14223a;
    --line: #23314a; --grid: #1c2840; --text: #eef2f8; --text-2: #c2cbd9; --muted: #8d99ad;
    --accent: #4b93ea; --accent-strong: #6aa6ef; --accent-soft: #1a2c4a; --accent-fill: rgba(75, 147, 234, .18);
    --violet: #9085e9; --violet-soft: #241f45; --up: #3fbf74; --down: #ef6b64;
    --top: #08111f; --top-2: #13213a; --shadow: none;
    --map-0: #1a2538; --map-1: #0d366b; --map-2: #104281; --map-3: #184f95; --map-4: #1c5cab;
    --map-5: #2a78d6; --map-6: #5598e7; --map-7: #9ec5f4;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220; --panel: #121b2c; --panel-2: #172238; --hero: #14223a;
  --line: #23314a; --grid: #1c2840; --text: #eef2f8; --text-2: #c2cbd9; --muted: #8d99ad;
  --accent: #4b93ea; --accent-strong: #6aa6ef; --accent-soft: #1a2c4a; --accent-fill: rgba(75, 147, 234, .18);
  --violet: #9085e9; --violet-soft: #241f45; --up: #3fbf74; --down: #ef6b64;
  --top: #08111f; --top-2: #13213a; --shadow: none;
  --map-0: #1a2538; --map-1: #0d366b; --map-2: #104281; --map-3: #184f95; --map-4: #1c5cab;
  --map-5: #2a78d6; --map-6: #5598e7; --map-7: #9ec5f4;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 16px; font-weight: 700; }
svg { flex: none; }
.muted { color: var(--muted); font-weight: 400; }
.small { font-size: 12px; }
.tiny { font-size: 11px; line-height: 1.45; }
button, select, input { font: inherit; color: inherit; }

/* ---------- Top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 20; background: linear-gradient(90deg, var(--top), var(--top-2)); color: var(--top-text); }
.topbar-inner { display: flex; align-items: center; gap: 20px; padding: 10px 20px; max-width: 1600px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--top-text); text-decoration: none !important; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 21px; font-weight: 800; letter-spacing: -0.02em; }
.brand-tag { font-size: 11.5px; color: var(--top-muted); }
.topnav { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; }
.topnav::-webkit-scrollbar { display: none; }
.topnav a { color: #dce6f5; padding: 8px 14px; border-radius: 8px; font-weight: 500; white-space: nowrap; text-decoration: none; }
.topnav a:hover { background: rgba(255,255,255,.08); }
.topnav a.on { background: var(--accent); color: #fff; }
.top-actions { display: flex; align-items: center; gap: 8px; flex: none; }
.search { display: flex; align-items: center; gap: 8px; background: #fff; border-radius: 10px; padding: 0 12px; height: 38px; width: 300px; }
.search svg { width: 17px; height: 17px; fill: none; stroke: #7a8699; stroke-width: 2; }
.search input { border: 0; outline: 0; background: transparent; color: #0e1a2b; width: 100%; }
.icon-btn { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); color: #fff; border-radius: 10px; width: 38px; height: 38px; display: grid; place-items: center; cursor: pointer; }
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }

/* ---------- Layout ---------- */
.shell { display: grid; grid-template-columns: 228px minmax(0, 1fr); max-width: 1600px; margin: 0 auto; }
.sidebar { position: sticky; top: 58px; align-self: start; height: calc(100vh - 58px); display: flex; flex-direction: column; justify-content: space-between;
  padding: 16px 12px; border-right: 1px solid var(--line); background: var(--panel); overflow-y: auto; }
.side-nav { display: flex; flex-direction: column; gap: 2px; }
.side-nav a { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 10px; color: var(--text-2); font-weight: 500; text-decoration: none; }
.side-nav a svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.side-nav a:hover { background: var(--panel-2); color: var(--text); }
.side-nav a.on { background: var(--accent-soft); color: var(--accent-strong); }
.side-foot { padding: 14px 8px 4px; border-top: 1px solid var(--line); margin-top: 16px; font-size: 13px; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; margin-top: 6px; font-size: 12px; color: var(--up); font-weight: 600; }
.status-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 3px color-mix(in srgb, currentColor 20%, transparent); }
.status-pill.stale { color: #b7791f; }
.content { padding: 18px 20px 28px; min-width: 0; display: flex; flex-direction: column; gap: 14px; }

.notice { padding: 12px 16px; border: 1px solid var(--line); border-left: 4px solid var(--accent); background: var(--panel); border-radius: 10px; }

/* ---------- Hero ---------- */
.hero { display: flex; align-items: center; justify-content: space-between; gap: 16px; background: var(--hero); border-radius: var(--radius); padding: 18px 22px; flex-wrap: wrap; }
.hero h1 { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.hero p { margin: 2px 0 0; color: var(--text-2); font-size: 15px; }
.date-card { display: flex; align-items: center; gap: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 8px 12px 8px 14px; box-shadow: var(--shadow); cursor: pointer; }
.date-card svg { width: 22px; height: 22px; fill: none; stroke: var(--text-2); stroke-width: 1.8; }
.date-text { display: flex; flex-direction: column; }
.date-label { font-size: 12px; color: var(--muted); }
.date-card select { border: 0; background: transparent; font-weight: 600; padding: 0; cursor: pointer; outline-offset: 2px; }

/* ---------- KPI cards ---------- */
.kpis { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.kpi { display: flex; gap: 14px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); min-width: 0; }
.kpi-icon { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); flex: none; }
.kpi-icon.violet { background: var(--violet-soft); color: var(--violet); }
.kpi-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.kpi-body { min-width: 0; }
.kpi-label { font-size: 13px; color: var(--text-2); }
.kpi-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-top: 2px; }
.kpi-value { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.kpi-delta { font-size: 13px; font-weight: 700; white-space: nowrap; }
.kpi-delta.up { color: var(--up); }
.kpi-delta.down { color: var(--down); }
.kpi-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ---------- Cards / rows ---------- */
.row { display: grid; gap: 14px; }
.row.two-wide { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); }
.row.two-even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.row.three { grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) minmax(0, .85fr); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); min-width: 0; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.controls { display: flex; gap: 8px; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: var(--panel); }
.seg button { border: 0; background: transparent; padding: 5px 12px; cursor: pointer; color: var(--text-2); font-size: 13px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: #fff; }
.link-btn { border: 0; background: none; color: var(--accent); cursor: pointer; font-size: 13px; font-weight: 600; padding: 0; }
.chart { position: relative; height: 260px; }
.chart.tall { height: 330px; }
.chart.short { height: 190px; }
.foot { margin: 8px 0 0; font-size: 12px; color: var(--muted); }
.sub-head { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); margin: 16px 0 6px; font-weight: 700; }

/* ---------- Map ---------- */
.map { position: relative; width: 100%; aspect-ratio: 1.9 / 1; }
.map svg { width: 100%; height: 100%; display: block; }
.map path.country { stroke: var(--panel); stroke-width: .5; cursor: pointer; transition: opacity .15s; }
.map path.country:hover { stroke: var(--text); stroke-width: 1; }
.map path.country.sel { stroke: var(--text); stroke-width: 1.4; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 8px; font-size: 12px; color: var(--text-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 14px; height: 10px; border-radius: 2px; display: inline-block; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
.table-wrap.scroll { max-height: 300px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 6px; border-bottom: 1px solid var(--grid); vertical-align: middle; }
th { font-size: 12px; color: var(--text-2); font-weight: 600; background: var(--panel-2); position: sticky; top: 0; z-index: 1; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.rank { color: var(--muted); width: 26px; }
td.name { max-width: 0; width: 100%; }
td.name .t { display: flex; align-items: center; gap: 8px; min-width: 0; }
td.name .t span.lbl { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
td.gain { color: var(--up); font-weight: 700; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td, tr.hl td { background: var(--accent-soft); }
.fi { width: 1.33em; height: 1em; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.08); flex: none; }
.cc { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.spark { display: block; }
.empty { color: var(--muted); font-size: 13px; padding: 10px 0; }

/* ---------- Lists ---------- */
ol.rank-list, ol.paper-list { margin: 0; padding: 0; list-style: none; counter-reset: r; }
ol.rank-list li, ol.paper-list li { counter-increment: r; display: grid; grid-template-columns: 24px 1fr auto; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--grid); align-items: baseline; }
ol.rank-list li::before, ol.paper-list li::before { content: counter(r); color: var(--muted); font-size: 12.5px; }
ol .n { font-variant-numeric: tabular-nums; color: var(--text-2); font-weight: 600; font-size: 13px; }
ol .meta { display: block; font-size: 12px; color: var(--muted); }
ol.paper-list a { color: var(--text); font-weight: 500; }

/* ---------- Country view ---------- */
.cv-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 24px; }
.mini-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 12px; }
.mini { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.mini-value { font-size: 21px; font-weight: 800; margin-top: 2px; font-variant-numeric: tabular-nums; }
#countrySelect { background: var(--panel); border: 1px solid var(--line); border-radius: 9px; padding: 6px 10px; }

/* ---------- Buttons / about ---------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.btn { display: inline-flex; align-items: center; border: 1px solid var(--line); background: var(--panel); color: var(--text); border-radius: 9px; padding: 8px 14px; font-weight: 600; font-size: 13px; cursor: pointer; text-decoration: none !important; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.about-list { margin: 0; padding-left: 18px; color: var(--text-2); }
.about-list li { margin: 5px 0; }
.site-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; font-size: 12.5px; color: var(--text-2); padding: 8px 2px; }

/* ---------- Dialog + tooltip ---------- */
dialog { border: 1px solid var(--line); border-radius: 16px; padding: 0; width: min(760px, calc(100vw - 32px)); max-height: 82vh; background: var(--panel); color: var(--text); box-shadow: 0 20px 60px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(10, 20, 40, .45); }
.dlg-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.dlg-head .icon-btn { background: var(--panel-2); color: var(--text); border-color: var(--line); }
.dlg-body { max-height: calc(82vh - 64px); overflow: auto; padding: 0 18px 14px; }
.tip { position: fixed; z-index: 50; pointer-events: none; background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-size: 12.5px; box-shadow: 0 6px 20px rgba(0,0,0,.15); max-width: 240px; }
.tip b { display: block; font-size: 13px; }

/* ---------- Responsive ---------- */
@media (max-width: 1360px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .row.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row.three > :last-child { grid-column: 1 / -1; }
}
@media (max-width: 1180px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .search { width: 220px; }
  .row.two-wide { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .topbar-inner { flex-wrap: wrap; gap: 10px; padding: 10px 16px; }
  .topnav { order: 3; flex-basis: 100%; }
  .top-actions { margin-left: auto; }
  .search { width: 180px; }
  .row.two-even, .row.three, .cv-grid { grid-template-columns: 1fr; }
  .row.three > :last-child { grid-column: auto; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content { padding: 14px 16px 24px; }
  html { scroll-padding-top: 120px; }
}
@media (max-width: 560px) {
  .brand-tag { display: none; }
  .search { display: none; }
  .kpis { grid-template-columns: 1fr; }
  .kpi-value { font-size: 24px; }
  .mini-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero h1 { font-size: 22px; }
  .chart.tall { height: 380px; }
}