:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --border: #e1e1ea;
  --text: #232436;
  --muted: #5e6272;
  --accent: #675df4;
  --accent-soft: #efecff;
  --accent-strong: #473e9c;
  --success: #009f42;
  --warning: #f0ad4e;
  --danger: #b41c2b;
  --radius-xl: 12px;
  --radius-lg: 8px;
  --radius-md: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  font-family: "Geist", system-ui, sans-serif;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 140ms;
}

button,
input,
textarea {
  font: inherit;
}

img {
  max-width: 100%;
  display: block;
}

::selection {
  background: rgba(103, 93, 244, 0.16);
}

.screen-reader-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Nav ── */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--bg);
  transition: transform 300ms;
}

.site-nav.is-hidden {
  transform: translateY(-100%);
}

.nav-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 140ms;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
  outline: none;
}

.nav-link[aria-current="page"] {
  color: var(--text);
}

.nav-spacer {
  height: 72px;
}

/* ── Hero ── */

.hero-section {
  position: relative;
  width: 100%;
  min-height: 520px;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.hero-text {
  position: absolute;
  bottom: 40px;
  max-width: 480px;
  text-align: left;
}

/* ── Typography ── */

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.accent-text {
  color: var(--accent);
}

.hero-brand-lockup {
  margin-bottom: 16px;
}

.hero-brand-title {
  margin: 0;
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-left: -0.04em;
}

.hero-brand-byline {
  margin: 8px 0 0;
  display: inline-block;
  white-space: nowrap;
  line-height: 1;
  color: var(--accent);
  font-family: "DM Sans", "Geist", system-ui, sans-serif;
  font-size: clamp(0.82rem, 1.1vw, 0.92rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  opacity: 0.82;
  margin-left: 0.12em;
}

.hero-headline {
  margin: 0;
  font-size: clamp(1.8rem, 3.3vw, 2.65rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-copy {
  margin-top: 20px;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
  white-space: pre-line;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* ── Buttons ── */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 140ms, color 140ms;
}

.button-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.button-primary:hover {
  background: var(--accent-strong);
}

.button-ghost {
  background: transparent;
  color: var(--muted);
}

.button-ghost:hover {
  background: rgba(103, 93, 244, 0.06);
  color: var(--text);
}

/* ── Wrap ── */

.wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Content sections ── */

.content-section {
  padding: 56px 0;
}

.content-section.border-top {
  border-top: 1px solid var(--border);
}

.section-title {
  max-width: 768px;
}

.section-copy {
  margin-top: 4px;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 640px;
}

.section-copy-wide {
  max-width: none;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}

/* ── Top-model callout ── */

.top-model-card {
  margin-top: 0;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.takeaway-card {
  margin-top: 24px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.takeaway-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.takeaway-list li + li {
  margin-top: 8px;
}

.caution-note {
  margin-top: 16px;
  padding: 12px 16px;
  border: 1px solid rgba(103, 93, 244, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(103, 93, 244, 0.04);
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Filter bar ── */

.filtered-results-scope {
  position: relative;
}

.filter-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.filter-bar-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-heading {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--text);
  flex-shrink: 0;
}

.filter-selectors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.filter-chip label {
  font-size: 0.75rem;
  color: var(--muted);
}

.filter-chip select {
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 500;
  outline: none;
}

/* ── Model toggles ── */

.toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.model-toggle {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: rgba(240, 240, 248, 1);
  color: var(--muted);
  font-size: 0.75rem;
  cursor: pointer;
  transition: border-color 140ms, background-color 140ms, color 140ms;
}

.model-toggle.is-active {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.model-toggle:hover,
.model-toggle:focus-visible {
  color: var(--text);
  outline: none;
}

.model-toggle .model-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--toggle-color, var(--accent));
}

.model-toggle strong {
  font-weight: 500;
  font-size: 0.75rem;
}

.model-toggle .muted {
  display: none;
}

.status {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.filter-scope-hint {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

/* ── Two-col layout ── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

/* ── Card ── */

.card {
  position: relative;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  min-height: 280px;
}

.card canvas {
  width: 100% !important;
  height: 100% !important;
}

.card.tall {
  min-height: 400px;
}

.card.table-card {
  min-height: auto;
  overflow-x: auto;
}

/* ── Empty state (chart fallback) ── */

.empty-state-block {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
  padding: 20px;
  border-radius: inherit;
}

/* ── Section story ── */

.section-story {
  margin: 20px 0;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(103, 93, 244, 0.04);
  font-size: 0.875rem;
  line-height: 1.65;
}

.section-story.warning {
  border-left-color: var(--warning);
  background: rgba(240, 173, 78, 0.06);
}

.section-story p {
  margin: 0;
}

.section-story p + p {
  margin-top: 8px;
}

.story-kicker {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 4px;
}

/* ── Tables ── */

.leaderboard-table,
.detail-table,
.slice-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.leaderboard-table th,
.leaderboard-table td,
.detail-table th,
.detail-table td,
.slice-table th,
.slice-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.leaderboard-table th,
.detail-table th,
.slice-table th {
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.detail-table th,
.detail-table td {
  padding: 10px 8px;
}

.detail-table th.detail-model-col {
  min-width: 128px;
}

.detail-model-name {
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
  text-transform: none;
  white-space: normal;
}

.detail-model-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.6875rem;
  line-height: 1.35;
  letter-spacing: 0;
  text-transform: none;
  white-space: normal;
}

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

.rank-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.score-strong {
  font-size: 0.875rem;
  font-weight: 500;
}

.bundle-meta {
  font-size: 0.6875rem;
  color: var(--muted);
}

.badge-row {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(240, 240, 248, 1);
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 500;
}

.badge.success {
  border-color: rgba(0, 159, 66, 0.16);
  background: rgba(0, 159, 66, 0.06);
  color: var(--success);
}

.badge.warning {
  border-color: rgba(240, 173, 78, 0.16);
  background: rgba(240, 173, 78, 0.06);
  color: #8b6914;
}

/* ── Dimension cards ── */

.dimension-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.mini-card {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.dimension-id {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.dimension-name {
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 2px;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.6875rem;
  color: var(--muted);
}

.bar-shell {
  height: 6px;
  margin-top: 4px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(240, 240, 248, 1);
}

.bar-fill {
  width: var(--width);
  height: 100%;
  border-radius: inherit;
  background: var(--fill, var(--accent));
}

/* ── Metric strip ── */

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.metric-card {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.metric-title {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.metric-value {
  margin-top: 4px;
  font-size: 1.25rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.metric-subvalue {
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── Slice grid ── */

.slice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.slice-box {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.slice-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.slice-axis {
  font-size: 0.875rem;
  font-weight: 600;
}

.context-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* ── Mini rows ── */

.mini-rows {
  display: grid;
  gap: 6px;
}

.mini-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.mini-row-main {
  min-width: 0;
}

.mini-row-copy {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.75rem;
}

.mini-row-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid rgba(240, 173, 78, 0.18);
  border-radius: var(--radius-md);
  background: rgba(240, 173, 78, 0.06);
  color: #8b6914;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.mini-row strong {
  font-size: 0.8125rem;
  font-weight: 500;
}

.mini-row span {
  color: var(--muted);
  font-size: 0.8125rem;
}

/* ── Callout grid ── */

.callout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

.callout {
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.callout h3 {
  font-size: 0.875rem;
}

.callout p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ── Method list ── */

.method-list {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.method-list li + li {
  margin-top: 6px;
}

/* ── Methodology CTA ── */

.methodology-cta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 32px;
}

.method-cols {
  margin-top: 16px;
}

/* ── Detail score ── */

.detail-score {
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ── Meta grid (methodology page) ── */

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.meta-item {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.meta-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-value {
  display: block;
  margin-top: 6px;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ── Content page (methodology, contributors) ── */

.content-page {
  display: grid;
  gap: 24px;
}

.page-header {
  padding: 0;
}

.page-copy {
  margin-top: 8px;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 640px;
}

.page-card {
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.page-card-highlight {
  background: rgba(103, 93, 244, 0.04);
}

.page-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.page-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.page-card-copy {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-note {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(103, 93, 244, 0.04);
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Contributors page ── */

.contributor-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contributor-head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contributor-head h3 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.35;
}

.contributor-card-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 28px;
  align-items: flex-start;
  padding: 24px 28px;
}

.contributor-text h3 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.35;
}

.contributor-text .section-copy {
  max-width: none;
  margin-top: 10px;
}

.contributor-text .method-list {
  margin-top: 12px;
}

.contributor-people-list {
  margin-top: 10px;
}

.contributor-logo-link {
  margin-left: auto;
  margin-top: -4px;
  display: flex;
  align-items: flex-start;
  align-self: flex-start;
  line-height: 0;
}

.contributor-head-funding {
  align-items: center;
  justify-content: flex-start;
}

.contributor-head-funding h3 {
  margin: 0;
  text-align: left;
}

.contributor-head-funding > a {
  margin-left: auto;
  display: flex;
  align-items: center;
  align-self: center;
}

.contributor-logo {
  display: block;
  width: auto;
  height: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.contributor-logo-kivira {
  max-width: 184px;
  max-height: 56px;
}

.contributor-logo-roehampton {
  max-width: 164px;
  max-height: 72px;
}

.contributor-logo-esrc {
  max-width: 440px;
  max-height: 112px;
  border-radius: 4px;
}

/* ── Footer ── */

.footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 40px 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.75rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
  outline: none;
}

/* ── Helpers ── */

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

.focus-ring:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Responsive ── */

@media (min-width: 768px) {
  .hero-section {
    min-height: calc(100dvh - 4rem);
  }
}

@media (max-width: 1024px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .callout-grid {
    grid-template-columns: 1fr;
  }

  .slice-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip {
    grid-template-columns: 1fr 1fr;
  }

  .page-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .filter-bar {
    position: static;
    top: auto;
  }
}

@media (max-width: 640px) {
  .nav-inner {
    padding: 0 16px;
  }

  .wrap {
    padding: 0 16px;
  }

  .hero-text {
    left: 16px !important;
    right: 16px;
    bottom: 24px;
  }

  .content-section {
    padding: 32px 0;
  }

  .metric-strip {
    grid-template-columns: 1fr;
  }

  .filter-bar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .methodology-cta {
    padding: 16px 20px;
  }

  .contributor-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .contributor-logo-link {
    margin: 0 0 10px;
    display: inline-flex;
    align-self: flex-start;
  }

  .contributor-card-split {
    grid-template-columns: 1fr;
    padding: 20px 24px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}