/**
 * Ethical Alpha Audit — Research layer (site-integrated, v8.5)
 * Accents: Okabe–Ito only. Base layout matches public pages (sans stack, navy text).
 */

:root {
  --oi-black: #000000;
  --oi-orange: #e69f00;
  --oi-sky-blue: #56b4e9;
  --oi-bluish-green: #009e73;
  --oi-yellow: #f0e442;
  --oi-blue: #0072b2;
  --oi-vermillion: #d55e00;
  --oi-reddish-purple: #cc79a7;

  --eaa-navy: #1f2a44;
  --eaa-muted: #4a5568;
  --eaa-footer: #718096;
  --text: var(--eaa-navy);
  --text-body: var(--eaa-muted);
  --bg: #ffffff;
  --link: var(--oi-blue);
  --link-hover: var(--oi-vermillion);
  --accent-nav: var(--oi-bluish-green);
  --panel-border: var(--oi-sky-blue);
  --disclaimer-accent: var(--oi-orange);
  --badge-tech: var(--oi-reddish-purple);
  --focus-ring: var(--oi-blue);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", Consolas, monospace;

  --space-xs: 0.35rem;
  --space-sm: 0.65rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.25rem;
  --radius: 10px;
  --max-read: 42rem;
  --max-wide: 960px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.eaa-research {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

.eaa-research .page {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.eaa-research .content {
  flex: 1;
  padding: 56px 24px 40px 24px;
}

.eaa-research .wrapper {
  max-width: var(--max-wide);
  margin: 0 auto;
}

/* Primary site nav — matches about/methodology */
.eaa-site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
  font-size: 14px;
  margin-bottom: 20px;
}

.eaa-site-nav a {
  color: var(--eaa-navy);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 42, 68, 0.18);
}

.eaa-site-nav a:hover,
.eaa-site-nav a:focus-visible {
  border-bottom-color: var(--oi-blue);
  outline: none;
}

.eaa-site-nav a[aria-current="page"] {
  font-weight: 700;
  border-bottom-color: var(--oi-bluish-green);
  border-bottom-width: 2px;
}

/* Research subsection nav */
.eaa-research-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
  font-size: 13px;
  margin-bottom: 28px;
  padding: 12px 0 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.eaa-research-nav a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

.eaa-research-nav a:hover {
  color: var(--link-hover);
}

.eaa-research-nav a[aria-current="page"] {
  color: var(--link-hover);
  text-decoration-thickness: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: var(--space-sm) var(--space-md);
  background: var(--oi-yellow);
  color: var(--oi-black);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid var(--oi-black);
}

.skip-link:focus {
  left: var(--space-md);
  top: var(--space-md);
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.eaa-research-hdr {
  border-bottom: 3px solid var(--accent-nav);
  margin: 0 0 var(--space-lg);
  padding-bottom: var(--space-md);
}

.eaa-research-hdr__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
}

.eaa-research-hdr__brand {
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--eaa-navy);
}

.eaa-research-hdr__tag {
  font-size: 0.8rem;
  max-width: 28rem;
  color: var(--eaa-navy);
  border-left: 4px solid var(--oi-orange);
  padding-left: var(--space-md);
  margin: 0;
}

.eaa-wrap {
  max-width: var(--max-read);
  margin: 0 auto;
}

.eaa-wrap--wide {
  max-width: var(--max-wide);
}

.eaa-hub-title {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 18px 0;
  text-align: center;
  color: var(--eaa-navy);
}

.eaa-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--oi-blue);
  margin: 0 0 var(--space-xs);
}

h1.eaa-h1 {
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 var(--space-md);
  color: var(--eaa-navy);
}

h2.eaa-h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: var(--space-xl) 0 var(--space-sm);
  padding-top: var(--space-md);
  border-top: 2px solid var(--oi-sky-blue);
  color: var(--eaa-navy);
}

h3.eaa-h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: var(--space-lg) 0 var(--space-xs);
  color: var(--eaa-navy);
}

.eaa-research p,
.eaa-research li {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.7;
}

.eaa-research p {
  margin: 0 0 var(--space-md);
}

.eaa-research .eaa-lead {
  font-size: 16px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto var(--space-md);
  color: var(--text-body);
}

.eaa-research main a,
.eaa-research .eaa-card a,
.eaa-research .eaa-paper-footer-note a,
.eaa-research .eaa-research-footer a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.eaa-research main a:hover,
.eaa-research .eaa-card a:hover,
.eaa-research .eaa-paper-footer-note a:hover {
  color: var(--link-hover);
}

.eaa-research strong {
  color: var(--eaa-navy);
}

*:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

ul.eaa-list {
  margin: 0 0 var(--space-md);
  padding-left: 1.2rem;
}

ul.eaa-list li {
  margin-bottom: var(--space-xs);
}

.eaa-disclaimer {
  border: 1px solid var(--disclaimer-accent);
  border-left-width: 5px;
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--bg);
  font-size: 0.98rem;
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.05);
}

.eaa-disclaimer__label {
  display: block;
  font-weight: 800;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
  color: var(--eaa-navy);
}

.eaa-bind {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
  border: 1px solid rgba(31, 42, 68, 0.12);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  background: var(--bg);
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.05);
}

.eaa-bind dt {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--oi-blue);
  margin-top: var(--space-sm);
}

.eaa-bind dt:first-of-type {
  margin-top: 0;
}

.eaa-bind dd {
  margin: 0;
  word-break: break-word;
  color: var(--eaa-navy);
}

.eaa-card-grid {
  display: grid;
  gap: 18px;
  margin: var(--space-xl) 0;
}

@media (min-width: 640px) {
  .eaa-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.eaa-card {
  border: 1px solid rgba(31, 42, 68, 0.08);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.05);
  border-top: 3px solid var(--panel-border);
}

.eaa-card__label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--eaa-navy);
  margin-bottom: var(--space-xs);
}

.eaa-card__label::before {
  content: "";
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  margin-right: 0.35rem;
  vertical-align: middle;
  background: var(--oi-bluish-green);
  border: 1px solid var(--oi-black);
}

.eaa-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.05rem;
  color: var(--eaa-navy);
}

.eaa-card p {
  flex: 1;
  margin: 0 0 var(--space-sm);
}

.eaa-card__cta {
  font-weight: 700;
  margin-top: auto;
  font-size: 14px;
}

.eaa-card__cta a {
  font-weight: 700;
}

.eaa-trust-strip {
  font-size: 0.88rem;
  line-height: 1.55;
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
  border: 1px dashed var(--oi-bluish-green);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text-body);
}

.eaa-trust-strip strong {
  font-weight: 800;
  color: var(--eaa-navy);
}

.eaa-panel {
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
  border-left: 5px solid var(--oi-sky-blue);
  background: var(--bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.05);
}

.eaa-pullquote {
  margin: var(--space-md) 0 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 5px solid var(--oi-vermillion);
  font-style: italic;
  color: var(--eaa-navy);
}

.eaa-details {
  margin: var(--space-lg) 0;
  border: 1px solid rgba(31, 42, 68, 0.12);
  border-radius: var(--radius);
  background: var(--bg);
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.04);
}

.eaa-details summary {
  font-weight: 700;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  list-style: none;
  background: var(--oi-yellow);
  color: var(--oi-black);
  border-radius: var(--radius) var(--radius) 0 0;
}

.eaa-details summary::-webkit-details-marker {
  display: none;
}

.eaa-details summary::before {
  content: "[+] ";
  font-weight: 800;
  color: var(--oi-black);
}

.eaa-details[open] summary {
  border-radius: var(--radius) var(--radius) 0 0;
}

.eaa-details[open] summary::before {
  content: "[−] ";
}

.eaa-details summary:focus-visible {
  outline: 3px solid var(--oi-black);
  outline-offset: 2px;
}

.eaa-details__body {
  padding: var(--space-lg);
  border-top: 1px solid rgba(31, 42, 68, 0.12);
}

.eaa-notebook-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: baseline;
  margin-bottom: var(--space-sm);
  font-size: 0.92rem;
}

.eaa-notebook-line .nb-name {
  font-weight: 800;
  min-width: 10rem;
  color: var(--eaa-navy);
}

.eaa-appendix-hdr {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin: var(--space-xl) 0 var(--space-md);
}

.eaa-badge {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.5rem;
  border: 2px solid var(--oi-black);
  background: var(--badge-tech);
  color: var(--oi-black);
}

.eaa-table-scroll {
  overflow-x: auto;
  margin: var(--space-md) 0 var(--space-xl);
  border: 1px solid rgba(31, 42, 68, 0.12);
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(31, 42, 68, 0.05);
}

table.eaa-trace {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.74rem;
  line-height: 1.45;
}

table.eaa-trace th,
table.eaa-trace td {
  border-bottom: 1px solid var(--oi-black);
  padding: 0.5rem 0.45rem;
  vertical-align: top;
  text-align: left;
}

table.eaa-trace th {
  background: var(--oi-black);
  color: var(--oi-yellow);
  font-weight: 800;
  position: sticky;
  top: 0;
  z-index: 1;
  border-bottom: 2px solid var(--oi-black);
}

table.eaa-trace tbody tr:nth-child(even) {
  background: rgba(240, 228, 66, 0.12);
}

table.eaa-trace .cid {
  font-weight: 800;
  white-space: nowrap;
  color: var(--oi-blue);
}

table.eaa-trace .status {
  font-weight: 600;
  color: var(--eaa-navy);
}

table.eaa-trace code {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.eaa-research-footer {
  text-align: center;
  font-size: 12px;
  color: var(--eaa-footer);
  padding: 18px 10px 22px 10px;
}

.eaa-research-footer a {
  color: var(--eaa-navy);
  border-bottom: 1px solid rgba(31, 42, 68, 0.18);
  text-decoration: none;
}

.eaa-research-footer a:hover {
  border-bottom-color: var(--oi-blue);
}

.eaa-paper-footer-note {
  font-size: 13px;
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(31, 42, 68, 0.08);
  color: var(--text-body);
}