@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,700&family=DM+Sans:wght@400;500;600&display=swap');

/* Small Data Ethics — styles.css
   Author: Laini Byfield
   Palette: brick #8B3A2A · slate navy #1C2B40 · warm white #F6F4F1
*/

:root {
  --brick:        #8B3A2A;
  --brick-light:  #A84E3B;
  --brick-pale:   #F5EDE9;
  --brick-muted:  #C4846E;
  --navy:         #1C2B40;
  --navy-mid:     #2E4260;
  --navy-muted:   #4A6080;
  --bg:           #FFFFFF;
  --panel:        #F6F4F1;
  --ink:          #1A1A1A;
  --muted:        #4A4A4A;
  --faint:        #7A7A7A;
  --border:       #DDDAD5;
  --border-strong:#C8C4BE;
  --shadow-sm:    0 2px 8px rgba(28,43,64,.07);
  --shadow-md:    0 6px 20px rgba(28,43,64,.10);
  --radius:       10px;
  --radius-lg:    14px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  font-size: 15px;
}

/* Paper texture overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: -1;
}

a { color: var(--brick); text-underline-offset: 3px; }
a:hover { color: var(--brick-light); }

strong { font-weight: 600; }

.container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

/* ── Skip link ── */
.skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--navy);
  color: #fff;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
}
.skip:focus { left: 10px; z-index: 20; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  padding: 16px 0;
  align-items: center;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.brand-link { display: inline-flex; border-radius: 8px; }
.brand-link:focus { outline: 2px solid var(--brick-muted); outline-offset: 3px; }

.mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 3px;
}

.mark svg { display: block; }

.kicker {
  margin: 0 0 3px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: .10em;
  text-transform: uppercase;
  font-weight: 500;
}

.title-link {
  color: var(--navy);
  text-decoration: none;
}
.title-link:hover { color: var(--brick); }

.site-header h1 {
  margin: 0;
  font-family: 'Source Serif 4', serif;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: .01em;
  color: var(--navy);
}

.subhead {
  margin: 4px 0 0;
  color: var(--faint);
  font-size: 13px;
  max-width: 60ch;
  line-height: 1.45;
}

/* ── Nav ── */
.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px 6px;
}

.nav a {
  color: var(--navy);
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: color .15s, background .15s, border-color .15s;
}
.nav a:hover {
  color: var(--brick);
  background: var(--brick-pale);
  border-color: var(--brick-muted);
}
.nav a.active {
  color: var(--brick);
  background: var(--brick-pale);
  border-color: var(--brick-muted);
  font-weight: 600;
}

/* ── Page hero ── */
.page-hero {
  padding: 48px 0 24px;
  border-bottom: 1px solid var(--border);
}

.hero-inner h2 {
  margin: 0 0 12px;
  font-family: 'Source Serif 4', serif;
  font-size: 42px;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--navy);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--faint);
  font-size: 13px;
}

.lead {
  color: var(--muted);
  font-size: 16px;
  max-width: 72ch;
  line-height: 1.65;
  margin: 0 0 16px;
}

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

.chip {
  display: inline-flex;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--brick-muted);
  background: var(--brick-pale);
  color: var(--brick);
  font-size: 11.5px;
  font-weight: 500;
}

/* ── Sections ── */
.section { padding: 36px 0; }

.section.alt {
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ── Prose ── */
.prose h2 {
  font-family: 'Source Serif 4', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
  letter-spacing: .01em;
}

.prose h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}

.prose h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--brick);
  margin: 0 0 5px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.prose p { color: var(--muted); margin: 0 0 12px; }
.prose p:last-child { margin-bottom: 0; }
.prose ul { color: var(--muted); padding-left: 18px; margin: 0 0 12px; }
.prose li { margin: 6px 0; }

/* ── Note / aside ── */
.note {
  color: var(--faint);
  border-left: 3px solid var(--brick-muted);
  padding-left: 12px;
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.55;
}

/* ── Cards ── */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.card.wide {
  border-top: 3px solid var(--brick);
  padding: 20px;
  margin-top: 16px;
}

/* ── Callout ── */
.callout {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.callout h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 8px;
}

/* ── Grids ── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

/* ── Stack ── */
.stack { display: grid; gap: 10px; margin-top: 14px; }

.stack-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 16px;
}

.stack-item h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 5px;
}

.stack-item p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}

/* ── ETHICMAP pill grid ── */
.ethicmap-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.pill {
  border-radius: var(--radius);
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--brick);
  background: var(--bg);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.pill h3 {
  margin: 0 0 5px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--navy);
}

.pill p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* ── Link grid ── */
.link-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
}

.link-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: var(--bg);
  transition: border-color .15s, box-shadow .15s;
}

.link-card h3 {
  color: var(--navy);
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
}

.link-card p {
  margin: 0;
  color: var(--faint);
  font-size: 13px;
  line-height: 1.5;
}

.link-card:hover {
  border-color: var(--brick-muted);
  box-shadow: var(--shadow-sm);
}

.link-card:hover h3 { color: var(--brick); }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  background: var(--navy);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.site-footer p {
  margin: 0;
  color: rgba(255,255,255,.55);
  font-size: 13px;
}

.small { font-size: 13px; color: var(--faint); }

/* ── Responsive ── */
@media (max-width: 960px) {
  .header-grid { grid-template-columns: 1fr; gap: 12px; }
  .nav { justify-content: flex-start; }
  .hero-inner h2 { font-size: 34px; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .ethicmap-grid { grid-template-columns: 1fr; }
  .link-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .link-grid { grid-template-columns: 1fr; }
  .hero-inner h2 { font-size: 28px; }
}