/* ── Design tokens ──────────────────────────────────────────────── */
:root {
  color-scheme: light;

  /* Base palette */
  --page:           #ffffff;
  --surface:        #f8f9fa;
  --surface-raised: #ffffff;
  --text-primary:   #0d1117;
  --text-secondary: #4b5563;
  --text-muted:     #9ca3af;
  --border:         #e5e7eb;
  --border-light:   #f3f4f6;
  --critical:       #dc2626;

  /* Accent (teal/green — bioinformatics feel) */
  --accent:         #0d9488;
  --accent-light:   #ccfbf1;
  --accent-dark:    #0f766e;

  /* Hero */
  --hero-bg-from:   #0f172a;
  --hero-bg-to:     #1e293b;
  --hero-text:      #f1f5f9;
  --hero-muted:     #94a3b8;

  /* Domain icons */
  --bio-color:      #0d9488;
  --stat-color:     #7c3aed;

  /* Agent palette (matches charts.js) */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  --series-5: #e87ba4;
  --series-6: #008300;
  --series-7: #4a3aa7;
  --series-8: #e34948;

  /* Chart internals (kept for charts.js) */
  --gridline:       #e5e7eb;
  --axis:           #d1d5db;
  --muted:          #9ca3af;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page:           #0d1117;
    --surface:        #161b22;
    --surface-raised: #1c2128;
    --text-primary:   #e6edf3;
    --text-secondary: #8b949e;
    --text-muted:     #6e7681;
    --border:         #30363d;
    --border-light:   #21262d;
    --critical:       #f85149;

    --accent:         #14b8a6;
    --accent-light:   #042f2e;
    --accent-dark:    #0d9488;

    --hero-bg-from:   #020617;
    --hero-bg-to:     #0f172a;
    --hero-text:      #f1f5f9;
    --hero-muted:     #64748b;

    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --series-5: #d55181;
    --series-6: #008300;
    --series-7: #9085e9;
    --series-8: #e66767;

    --gridline: #21262d;
    --axis:     #30363d;
    --muted:    #6e7681;
  }
}

/* ── Reset & base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.875em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ── Layout helpers ─────────────────────────────────────────────── */
.content-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ─────────────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--hero-bg-from);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  font-weight: 700;
  font-size: 15px;
  color: #f1f5f9;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow: hidden;
}

.nav-links a {
  color: rgba(241,245,249,0.7);
  font-size: 13.5px;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover {
  color: #f1f5f9;
  background: rgba(255,255,255,0.06);
  text-decoration: none;
}

.nav-external {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.btn-nav {
  font-size: 13px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(241,245,249,0.85);
  background: transparent;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-nav:hover {
  background: rgba(255,255,255,0.08);
  color: #f1f5f9;
  text-decoration: none;
  border-color: rgba(255,255,255,0.3);
}

.btn-nav--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-nav--primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

/* ── Hero section ────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, var(--hero-bg-from) 0%, var(--hero-bg-to) 100%);
  padding: 80px 0 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(13,148,136,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.hero-badge {
  display: inline-block;
  background: rgba(13,148,136,0.15);
  border: 1px solid rgba(13,148,136,0.35);
  color: #5eead4;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--hero-text);
  line-height: 1.1;
}

.hero-tagline {
  margin: 0 0 32px;
  font-size: clamp(16px, 2.5vw, 21px);
  color: var(--hero-muted);
  font-weight: 400;
}

.hero-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 500;
  padding: 9px 20px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(241,245,249,0.9);
  background: rgba(255,255,255,0.06);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.35);
  color: #f1f5f9;
  text-decoration: none;
}

.btn--outline { /* default — already styled above */ }

.btn--filled {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn--filled:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.abstract-box {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 28px 32px;
  text-align: left;
  max-width: 800px;
  margin: 0 auto;
}

.abstract-box p {
  margin: 0;
  font-size: 15.5px;
  color: rgba(226,232,240,0.85);
  line-height: 1.75;
}

.abstract-box strong {
  color: #f1f5f9;
}

/* ── Stats section ───────────────────────────────────────────────── */
.stats-section {
  background: var(--accent);
  padding: 48px 0;
}

.stats-grid {
  display: flex;
  gap: 0;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 20px 40px;
  position: relative;
}

.stat-card + .stat-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,0.25);
}

.stat-number {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
  text-align: center;
}

/* ── Shared section styles ───────────────────────────────────────── */
.section-title {
  font-size: clamp(22px, 3.5vw, 32px);
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0 0 40px;
  max-width: 720px;
  line-height: 1.65;
}

.sub-section-title {
  font-size: 18px;
  font-weight: 600;
  margin: 48px 0 16px;
}

/* ── Domains section ─────────────────────────────────────────────── */
.domains-section {
  padding: 72px 0;
}

.domain-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 24px;
  margin-bottom: 0;
}

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

.domain-card {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

.domain-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.domain-icon svg {
  width: 28px;
  height: 28px;
}

.domain-icon--bio {
  background: rgba(13,148,136,0.1);
  color: var(--bio-color);
}

.domain-icon--stat {
  background: rgba(124,58,237,0.1);
  color: var(--stat-color);
}

.domain-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
}

.domain-card p {
  margin: 0 0 18px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.domain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* ── Format table ────────────────────────────────────────────────── */
.format-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.format-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.format-table th {
  background: var(--surface);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.format-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  vertical-align: top;
}

.format-table tr:last-child td { border-bottom: none; }

.format-table tr:hover td { background: var(--surface); }

/* ── Pipeline section ────────────────────────────────────────────── */
.pipeline-section {
  padding: 72px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pipeline-steps {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.pipeline-step {
  flex: 1;
  min-width: 180px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-body h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
}

.step-body p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pipeline-arrow {
  flex-shrink: 0;
  font-size: 22px;
  color: var(--text-muted);
  align-self: center;
  padding-top: 0;
}

@media (max-width: 700px) {
  .pipeline-arrow { display: none; }
}

.pipeline-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ── Findings section ────────────────────────────────────────────── */
.findings-section {
  padding: 72px 0;
}

.findings-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.finding-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.finding-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--accent);
}

.finding-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.finding-body strong {
  color: var(--text-primary);
}

/* ── Failures section ────────────────────────────────────────────── */
.failures-section {
  padding: 72px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.failures-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.failures-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.failures-table th {
  background: var(--surface-raised);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.failures-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
  vertical-align: top;
  line-height: 1.55;
}

.failures-table td:first-child {
  color: var(--text-primary);
  font-size: 13.5px;
}

.failures-table tr:last-child td { border-bottom: none; }

.failures-table tr:hover td { background: var(--surface); }

/* ── Agents section ──────────────────────────────────────────────── */
.agents-section {
  padding: 72px 0;
}

.agent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.agent-tag {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 24px;
  border-radius: 12px;
  border: 2px solid transparent;
  min-width: 200px;
  background: var(--surface-raised);
}

.agent-tag--0 { border-color: var(--series-1); }
.agent-tag--1 { border-color: var(--series-2); }
.agent-tag--2 { border-color: var(--series-3); }

.agent-tag-name {
  font-size: 17px;
  font-weight: 700;
}

.agent-tag--0 .agent-tag-name { color: var(--series-1); }
.agent-tag--1 .agent-tag-name { color: var(--series-2); }
.agent-tag--2 .agent-tag-name { color: var(--series-3); }

.agent-tag-score {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Citation section ────────────────────────────────────────────── */
.cite-section {
  padding: 72px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cite-block {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 28px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre;
  margin: 0 0 16px;
}

.cite-note {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

/* ── Dashboard section ───────────────────────────────────────────── */
.dashboard-section {
  padding: 72px 0;
}

.dash-block {
  margin-bottom: 48px;
}

.dash-heading {
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin: 0 0 18px;
}

/* Agent picker chips */
.agent-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
  color: var(--text-secondary);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  opacity: 0.45;
  transition: opacity 0.15s;
}

.chip::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--chip-color, var(--text-muted));
  flex-shrink: 0;
}

.chip--active {
  opacity: 1;
  color: var(--text-primary);
}

/* Chart containers */
.chart-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.chart-row > figure {
  flex: 1 1 280px;
  min-width: 260px;
}

.chart-pair {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(340px, 1.7fr);
  gap: 20px;
  align-items: stretch;
}

@media (max-width: 720px) {
  .chart-pair { grid-template-columns: 1fr; }
}

figure {
  margin: 0;
  padding: 20px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-width: 0;
}

figure > div { width: 100%; }

figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn-reset {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.btn-reset:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.btn-reset.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.domain-bar-header {
  position: relative;
}

.difficulty-legend {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}

.difficulty-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-secondary);
}

.difficulty-legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.chart-header-actions {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-shrink: 0;
}

.btn-difficulty-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.btn-difficulty-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.btn-difficulty-toggle.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.placeholder {
  color: var(--text-muted);
  max-width: 44ch;
  font-size: 14px;
}

/* Error banner */
.error-banner {
  margin: 0 0 24px;
  padding: 12px 16px;
  border: 1px solid var(--critical);
  border-radius: 8px;
  color: var(--critical);
  background: var(--surface-raised);
  font-size: 14px;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--hero-bg-from);
  padding: 40px 0;
  text-align: center;
}

.site-footer p {
  margin: 0 0 8px;
  font-size: 13.5px;
  color: var(--hero-muted);
}

.site-footer p:last-child { margin-bottom: 0; }

.site-footer a {
  color: rgba(94,234,212,0.85);
}

.site-footer a:hover { color: #5eead4; }

/* ── Responsive tweaks ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-links { display: none; }
  .stat-card { padding: 16px 20px; }
  .stat-card + .stat-card::before { display: none; }
  .pipeline-steps { flex-direction: column; }
  .finding-item { flex-direction: column; gap: 12px; }
  .agent-tag { min-width: 0; flex: 1 1 140px; }
  .abstract-box { padding: 20px; }
}