:root {
  --bg: #0b0f14;
  --fg: #e7edf5;
  --muted: #a8b3c2;
  --card: #121826;
  --border: #223047;
  --accent: #7aa2ff;
  --code: #0f1522;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  border-bottom: 1px solid var(--border);
  background: radial-gradient(1200px 420px at 30% -10%, rgba(122,162,255,.25), transparent 60%),
              radial-gradient(900px 340px at 80% 0%, rgba(122,255,204,.14), transparent 55%);
  padding: 48px 0 24px;
}

.hero-top {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .hero-top { grid-template-columns: 1fr; }
}

h1 {
  margin: 0 0 10px;
  font-size: 40px;
  line-height: 1.15;
}

.subtitle {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 18px;
}

.meta {
  margin: 8px 0 14px;
  padding-left: 2px;
  font-size: 14px;
}

/* Links in the header meta block */
.meta-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}

.meta-link:hover {
  border-bottom-color: var(--accent);
}

.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  border: 1px solid var(--border);
  background: rgba(18,24,38,.65);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--fg);
}

.hero-card {
  border: 1px solid var(--border);
  background: rgba(18,24,38,.65);
  border-radius: 14px;
  padding: 16px;
}

.hero-card a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}

.hero-card a:hover {
  border-bottom-color: var(--accent);
}

.smallcaps {
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}

.nav {
  margin-top: 18px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}

.nav a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.nav a[aria-current="page"] {
  color: var(--fg);
  background: rgba(199,210,254,.18);
  border-radius: 8px;
  padding: 6px 10px;
  border: 1px solid rgba(199,210,254,.45);
  border-bottom: 1px solid rgba(199,210,254,.45);
}

.nav a.nav-primary {
  color: #07111f;
  background: linear-gradient(135deg, #91b4ff, #7de5c5);
  border: 0;
  border-radius: 9px;
  padding: 6px 11px;
  font-weight: 800;
}

.nav a.nav-primary:hover {
  color: #07111f;
  filter: brightness(1.08);
}

.local-nav {
  margin-top: 22px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,21,34,.55);
}

.tags {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(122,162,255,.45);
  background: rgba(122,162,255,.12);
  color: rgba(240,244,255,.95);
  font-size: 12px;
}

main { padding: 30px 0 60px; }

h2 { margin: 34px 0 10px; font-size: 26px; }
h3 { margin: 0 0 8px; font-size: 18px; }
.subhead { margin-top: 18px; }

.muted { color: var(--muted); }

.equation {
  margin: 8px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,21,34,.6);
  overflow-x: auto;
}

.note {
  margin: 12px 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(122,162,255,.35);
  background: rgba(122,162,255,.10);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
}

.grid2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 900px) {
  .grid2 { grid-template-columns: 1fr; }
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 14px;
  padding: 14px 14px 12px;
}

pre {
  margin: 10px 0 0;
  border: 1px solid var(--border);
  background: rgba(15,21,34,.9);
  padding: 12px;
  border-radius: 12px;
  overflow-x: auto;
}

code {
  background: rgba(15,21,34,.9);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 8px;
}

.footer {
  margin-top: 46px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

/* --- Full dataset progress --- */
.status-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 5px rgba(168,179,194,.12);
}

.status-dot.running,
.timeline .running::before {
  background: #f6c76e;
  box-shadow: 0 0 0 5px rgba(246,199,110,.14);
}

.progress-meter {
  height: 12px;
  margin: 20px 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--code);
}

.progress-meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #7aa2ff, #7de5c5);
}

.progress-kpis,
.quality-callout {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.progress-kpis .card,
.home-metrics .card {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.progress-kpis strong,
.home-metrics strong {
  font-size: 26px;
  line-height: 1.2;
}

.progress-kpis span,
.home-metrics span,
.quality-callout span {
  color: var(--muted);
  font-size: 13px;
}

.quality-callout {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quality-callout > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(125,229,197,.35);
  border-radius: 14px;
  background: rgba(125,229,197,.08);
}

.quality-callout strong {
  overflow-wrap: anywhere;
  font-size: 18px;
}

.timeline {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.timeline > div {
  position: relative;
  display: grid;
  gap: 3px;
  padding-left: 28px;
}

.timeline > div::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
}

.timeline > div:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 20px;
  bottom: -18px;
  left: 6px;
  width: 2px;
  background: var(--border);
}

.timeline .done::before { background: #7de5c5; }
.timeline span { color: var(--muted); }
.hash { overflow-wrap: anywhere; font-size: 13px; }

@media (max-width: 900px) {
  .progress-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quality-callout { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .progress-kpis { grid-template-columns: 1fr; }
}

/* --- Added for /research pages --- */

/* General link styling inside main content */
main a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}

main a:hover {
  border-bottom-color: var(--accent);
}

/* Tables (results + comparisons) */
.tablewrap {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,21,34,.6);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

/* Research index table: keep columns readable (horizontal scroll if needed) */
table.papers { min-width: 1120px; }
table.papers td.paper-col { min-width: 360px; }

th, td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  vertical-align: top;
}

th {
  background: rgba(18,24,38,.65);
  text-align: left;
}

/* --- Research UI controls (inputs/buttons) --- */
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }

.input, .select {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--fg);
  outline: none;
}

/* Improve native select dropdown visibility in dark theme */
.select{color-scheme:dark;}
.select option{background-color:var(--code);color:var(--fg);}
.select option:disabled{color:var(--muted);}
.input { width: 100%; }
.select { min-width: 160px; }

.btn {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { background: rgba(255,255,255,0.10); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary {
  background: rgba(120,170,255,0.18);
  border-color: rgba(120,170,255,0.35);
}
.btn.primary:hover { background: rgba(120,170,255,0.26); }

.papers .muted.small { font-size: 12px; margin-top: 6px; }

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 700;
}
.badge-curated { background: rgba(70, 200, 140, 0.12); border-color: rgba(70, 200, 140, 0.35); }
.badge-index { background: rgba(255, 200, 120, 0.10); border-color: rgba(255, 200, 120, 0.28); }

.nowrap { white-space: nowrap; }
.center { text-align: center; }


/* Clickable ASCII tree */
pre.ascii-tree a{color:#93c5fd;text-decoration:none;}
pre.ascii-tree a:hover{color:#bfdbfe;text-decoration:underline;}


/* --- Home: intro card --- */
#intro{
  border: 1px solid var(--border);
  background: rgba(18,24,38,.45);
  border-radius: 18px;
  padding: 18px 18px 14px;
}
#intro p{margin-top:10px;}
#intro em{color:var(--accent); font-style: italic;}

/* --- Benchmark-first homepage --- */
.home-builder-card h2 {
  margin: 7px 0 8px;
  font-size: 23px;
}

.home-cta {
  display: inline-flex;
  margin-top: 6px;
  text-decoration: none;
  border-bottom: 1px solid rgba(120,170,255,.35);
}

.home-secondary-link {
  margin: 10px 0 0;
  font-size: 14px;
}

.home-lead {
  padding: 6px 0 2px;
}

.home-lead > p {
  max-width: 790px;
  color: var(--muted);
  font-size: 17px;
}

.benchmark-path {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.benchmark-path div {
  position: relative;
  min-height: 132px;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(18,24,38,.95), rgba(15,21,34,.72));
}

.benchmark-path span {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  margin-bottom: 18px;
  border-radius: 9px;
  background: rgba(122,162,255,.18);
  color: #b9ceff;
  font-size: 13px;
  font-weight: 800;
}

.benchmark-path b,
.benchmark-path small {
  display: block;
}

.benchmark-path small {
  margin-top: 5px;
  color: var(--muted);
  line-height: 1.45;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.section-heading-row h2 { margin-top: 4px; }

.home-metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.home-metrics .card {
  min-height: 108px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.home-metrics strong {
  font-size: 30px;
  line-height: 1;
  color: #a9c2ff;
}

.home-metrics span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.progress-teaser .home-metrics {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.library-teaser {
  margin-top: 48px;
  padding-top: 34px;
  border-top: 1px solid var(--border);
}

.library-teaser > p { max-width: 820px; }

.library-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 17px;
}

.library-links a {
  min-height: 118px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.library-links a:hover {
  border-color: rgba(122,162,255,.55);
  transform: translateY(-2px);
}

.library-links b { font-size: 18px; }
.library-links span { color: var(--muted); font-size: 14px; }

.library-index-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.library-index-links a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}

.library-index-links span { color: var(--muted); font-size: 14px; }

@media (max-width: 900px) {
  .benchmark-path { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .library-links { grid-template-columns: 1fr; }
  .library-index-links { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .benchmark-path { grid-template-columns: 1fr; }
  .home-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-heading-row { align-items: start; flex-direction: column; }
}


/* Improve native <select> dropdown visibility in dark theme (cross-browser) */
select{color-scheme:dark;}
select option{background-color:var(--code);color:var(--fg);}
select option:disabled{color:var(--muted);}
select optgroup{background-color:var(--code);color:var(--fg);}

/* --- Benchmark Builder --- */
.builder-intro { margin-bottom: 18px; }

.builder-lead {
  max-width: 900px;
  font-size: 18px;
  color: var(--fg);
}

.optional-campaign {
  margin-top: 26px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(15,21,34,.45);
}

.optional-campaign > summary {
  padding: 14px 16px;
  cursor: pointer;
  color: var(--muted);
  font-weight: 700;
}

.optional-campaign[open] > summary {
  color: var(--fg);
  border-bottom: 1px solid var(--border);
}

.optional-campaign-body { padding: 0 16px 16px; }

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
  gap: 16px;
  align-items: start;
}

.builder-controls h2,
.builder-summary h2,
.builder-code-heading h2 { margin-top: 0; }

.builder-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.builder-fields label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.builder-fields .select,
.builder-fields .input {
  width: 100%;
  min-width: 0;
  color: var(--fg);
  font: inherit;
  font-weight: 500;
}

.builder-advanced {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.builder-advanced summary {
  margin-bottom: 12px;
  color: var(--accent);
  cursor: pointer;
  font-weight: 700;
}

.builder-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 14px;
}

.builder-summary {
  position: sticky;
  top: 14px;
}

.builder-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 0 0 14px;
}

.builder-stats div {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(15,21,34,.58);
}

.builder-stats dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.builder-stats dd {
  margin: 3px 0 0;
  overflow-wrap: anywhere;
  font-size: 20px;
  font-weight: 800;
}

.builder-warning {
  margin-top: 12px;
  padding: 11px 12px;
  border: 1px solid rgba(255,200,120,.35);
  border-radius: 11px;
  background: rgba(255,200,120,.08);
}

.builder-warning ul { margin-bottom: 0; padding-left: 20px; }

.builder-code-heading {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
}

.builder-code-heading .builder-actions { margin-top: 0; flex-shrink: 0; }

.builder-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 8px;
}

.builder-tabs [aria-selected="true"] {
  color: var(--fg);
  border-color: rgba(122,162,255,.65);
  background: rgba(122,162,255,.20);
}

.builder-code {
  max-height: 680px;
  margin-top: 0;
  tab-size: 2;
}

.builder-code code {
  padding: 0;
  border: 0;
  background: transparent;
  white-space: pre;
}

.builder-quality-table { min-width: 780px; }
.builder-quality-table td:nth-child(2) { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.campaign-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 16px;
  align-items: start;
  margin-top: 16px;
}

.campaign-controls h3,
.campaign-summary h3 { margin-top: 0; }

.campaign-summary {
  border-color: rgba(122,162,255,.38);
}

.campaign-stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.campaign-stats dd { font-size: 17px; }

.campaign-feasibility {
  margin-bottom: 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(122,162,255,.12);
  font-weight: 700;
}

.campaign-table-wrap { margin-top: 16px; }
.campaign-method-table { min-width: 1050px; }
.campaign-method-table td:last-child { max-width: 290px; }
.campaign-method-omitted { opacity: .58; }

.builder-controls :focus-visible,
.builder-tabs :focus-visible,
.builder-actions :focus-visible,
#builder-code-panel:focus-visible {
  outline: 3px solid rgba(122,162,255,.7);
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .builder-layout { grid-template-columns: 1fr; }
  .builder-summary { position: static; }
  .campaign-layout { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
  .builder-fields { grid-template-columns: 1fr; }
  .builder-code-heading { flex-direction: column; }
  .builder-code-heading .builder-actions { width: 100%; }
  .builder-code-heading .btn { flex: 1 1 auto; }
}