/* ============================================================
   AGINTICS — BRAND CSS
   Per brand guide v1.0 — paper/ink monochrome, one ember per view.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;1,9..144,300;1,9..144,400&family=Inter+Tight:wght@400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ---------- Tokens ---------- */
:root {
  --ink: #0B0E14;
  --ink-90: #1A1D24;
  --graphite: #2A2E36;
  --n70: #4A4F58;
  --n60: #6B7078;
  --n50: #8B8F98;
  --n30: #C7C9CE;
  --n10: #ECEAE3;
  --paper: #F6F5F1;
  --ember: #C85A3C;

  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --max: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --rule: 1px solid rgba(11, 14, 20, 0.12);
  --rule-strong: 1px solid rgba(11, 14, 20, 0.85);
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }

/* ---------- Type roles ---------- */
.display {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(44px, 7.4vw, 92px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 0;
}
.display em {
  font-style: italic;
  font-weight: 400;
}
.h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
}
.h1 em { font-style: italic; font-weight: 400; }
.h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 20px;
  line-height: 24px;
  letter-spacing: -0.01em;
  margin: 0;
}
.body-l {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 26px;
  color: var(--n70);
}
.body {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 24px;
  color: var(--n70);
}
.caption {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n70);
}
.label {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n60);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- Top utility bar (mimics brand guide header) ---------- */
.utility-bar {
  border-bottom: var(--rule);
  background: var(--paper);
}
.utility-bar .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n60);
}
.utility-bar .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
  margin-right: 10px;
  vertical-align: middle;
}

/* ---------- Header / navigation ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 245, 241, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: var(--rule);
}
header.site .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.wordmark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--ink);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.wordmark .br { color: var(--ember); }
.wordmark .agi { color: var(--n70); }
.wordmark .rest { color: var(--ink); }
.wordmark .bar {
  display: inline-block;
  width: 4px;
  height: 16px;
  background: var(--ember);
  margin-left: 8px;
  animation: blink 1.2s steps(2, start) infinite;
}
@keyframes blink {
  to { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .wordmark .bar { animation: none; }
}
nav.primary {
  display: flex;
  gap: 36px;
}
nav.primary a {
  font-size: 14px;
  color: var(--n70);
  transition: color 200ms var(--ease);
}
nav.primary a:hover, nav.primary a[aria-current="page"] {
  color: var(--ink);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 2px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
  cursor: pointer;
}
.btn:hover { background: var(--ember); border-color: var(--ember); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 4px 0;
  font-size: 14px;
  font-weight: 500;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.btn-link:hover { color: var(--ember); border-color: var(--ember); }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  border-radius: 2px;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(64px, 12vh, 144px) 0 clamp(64px, 10vh, 120px);
  border-bottom: var(--rule);
}
.hero .meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 56px;
}
.hero .lead {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(24px, 6vw, 96px);
  align-items: end;
}
.hero .display { max-width: 18ch; }
.hero .lead .right {
  padding-bottom: 12px;
}
.hero .actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cta-ember {
  background: var(--ember);
  border-color: var(--ember);
  color: var(--paper);
}
.cta-ember:hover { background: var(--ink); border-color: var(--ink); }

/* ---------- Section frame ---------- */
section.frame {
  padding: clamp(56px, 10vh, 112px) 0;
  border-bottom: var(--rule);
}
.section-head {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: baseline;
  margin-bottom: 56px;
}
.section-head .num { color: var(--n60); }
.section-head h2.h1 { max-width: 22ch; }

/* ---------- Two layers (home explainer) ---------- */
.layers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(11,14,20,0.12);
  border: var(--rule);
}
.layer {
  background: var(--paper);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 320px;
}
.layer .topline {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.layer h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 28px;
  line-height: 32px;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 18ch;
}
.layer h3 em { font-style: italic; font-weight: 400; }
.layer .schema {
  margin-top: auto;
  padding-top: 24px;
  border-top: var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 18px;
  letter-spacing: 0.04em;
  color: var(--n60);
  white-space: pre-line;
}
.layer .schema .ember { color: var(--ember); }

/* dark variant for the agent layer */
.layer.dark {
  background: var(--ink);
  color: var(--paper);
}
.layer.dark h3 { color: var(--paper); }
.layer.dark .label,
.layer.dark .body { color: var(--n30); }
.layer.dark .schema {
  border-top-color: rgba(246,245,241,0.16);
  color: var(--n50);
}

/* ---------- Cards (what we ship / products) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(11,14,20,0.12);
  border: var(--rule);
}
.card {
  background: var(--paper);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 280px;
}
.card .topline {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.card h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 20px;
  line-height: 24px;
  letter-spacing: -0.01em;
  margin: 0;
  max-width: 22ch;
}
.card .body { margin: 0; }
.card .footnote {
  margin-top: auto;
  padding-top: 20px;
  border-top: var(--rule);
}

/* ---------- Skills (catalogue + chips) ---------- */
.cards.cols-2 { grid-template-columns: repeat(2, 1fr); }
.skill-list {}
.skill-area {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  padding: 22px 0;
  border-top: var(--rule);
  align-items: start;
}
.skill-area:last-child { border-bottom: var(--rule); }
.skill-area .area-name {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  line-height: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.skill-area .area-sub {
  font-family: var(--mono);
  font-size: 10px;
  line-height: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n60);
  margin-top: 4px;
}
.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  padding: 7px 12px;
  border: 1px solid rgba(11,14,20,0.18);
  border-radius: 4px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 13px;
  line-height: 16px;
  color: var(--ink);
  white-space: nowrap;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
  cursor: default;
}
.chip:hover { border-color: var(--ink); background: rgba(11,14,20,0.04); }

@media (max-width: 960px) {
  .cards.cols-2 { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .skill-area { grid-template-columns: 1fr; gap: 12px; padding: 20px 0; }
  .chip { white-space: normal; }
}

/* ---------- Stats strip ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(11,14,20,0.12);
  border-top: var(--rule);
  border-bottom: var(--rule);
}
.stat {
  background: var(--paper);
  padding: 28px 24px;
}
.stat .num {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 44px;
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.stat .num em { font-style: italic; font-weight: 400; }
.stat .label { margin-top: 14px; }

/* ---------- Comparison table ---------- */
.compare-table { border-top: var(--rule); }
.compare-row {
  display: grid;
  grid-template-columns: 220px 1fr 1fr;
  gap: 40px;
  padding: 22px 0;
  border-bottom: var(--rule);
  align-items: start;
}
.compare-row.head { padding: 14px 0; }
.compare-dim {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 500;
}
.compare-head {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 20px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.compare-head .sub {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  line-height: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n60);
  font-weight: 400;
  margin-top: 6px;
}
.compare-cell {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 22px;
  color: var(--n70);
}
.compare-cell.us { color: var(--ink); }
.compare-cell::before { display: none; }

@media (max-width: 880px) {
  .compare-row { grid-template-columns: 1fr; gap: 14px; padding: 28px 0; }
  .compare-row.head { display: none; }
  .compare-cell::before {
    display: block;
    content: attr(data-vendor);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--n60);
    margin-bottom: 4px;
  }
}

/* ---------- Etymology block ---------- */
.etymology {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 6vw, 96px);
  align-items: start;
}
.etymology .mark {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(72px, 14vw, 160px);
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.etymology .mark em { font-style: italic; font-weight: 500; }
.etymology .mark .agi {
  color: var(--ember);
}
.etymology .gloss {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--n70);
  margin-top: 28px;
}
.etymology .prose p { margin: 0 0 18px; }
.etymology .prose .body-l { color: var(--ink); }

/* ---------- Pillars ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(11,14,20,0.12);
  border: var(--rule);
}
.pillar {
  background: var(--paper);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 240px;
}
.pillar .badge {
  display: inline-flex;
  padding: 6px 12px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  width: max-content;
}
.pillar h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 26px;
  line-height: 30px;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 16ch;
}
.pillar h3 em { font-style: italic; font-weight: 400; }

/* ---------- Product page list ---------- */
.product-list {
  display: grid;
  gap: 0;
  border-top: var(--rule);
}
.product-row {
  display: grid;
  grid-template-columns: 80px 1.2fr 1.5fr 1fr;
  gap: 24px;
  padding: 36px 0;
  border-bottom: var(--rule);
  align-items: start;
}
.product-row .num { color: var(--n60); padding-top: 4px; }
.product-row h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 14ch;
}
.product-row h3 em { font-style: italic; font-weight: 400; }
.product-row .desc { margin: 0; color: var(--n70); }
.product-row .signal {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 18px;
  letter-spacing: 0.06em;
  color: var(--n60);
  white-space: pre-line;
  padding-left: 20px;
  border-left: 1px solid rgba(11,14,20,0.16);
}

/* ---------- Diagram (home + product) ---------- */
.diagram {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(11,14,20,0.12);
  border: var(--rule);
}
.diagram-row {
  background: var(--paper);
  padding: 24px 28px;
  display: grid;
  grid-template-columns: 140px 1fr 240px;
  gap: 24px;
  align-items: center;
}
.diagram-row.dark { background: var(--ink); color: var(--paper); }
.diagram-row.dark .label { color: var(--n50); }
.diagram-row .layer-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.diagram-row .desc {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 22px;
  line-height: 28px;
  letter-spacing: -0.015em;
}
.diagram-row .desc em { font-style: italic; font-weight: 400; }
.diagram-row .signal {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 16px;
  letter-spacing: 0.06em;
  color: var(--n60);
  text-align: right;
}
.diagram-row.dark .signal { color: var(--n30); }

/* ---------- Contact form ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 96px);
}
.field {
  display: block;
  border-bottom: var(--rule);
  padding: 18px 0;
}
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--n60);
  margin-bottom: 6px;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  border: 0;
  background: transparent;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 24px;
  color: var(--ink);
  padding: 4px 0;
  outline: none;
  resize: vertical;
}
.field input::placeholder,
.field textarea::placeholder {
  color: var(--n50);
}
.field:focus-within { border-bottom-color: var(--ink); }

.contact-meta {
  display: grid;
  gap: 28px;
}
.contact-meta .item .label { display: block; margin-bottom: 6px; }
.contact-meta .item p { margin: 0; font-size: 16px; line-height: 24px; }

/* ---------- Footer ---------- */
footer.site {
  background: var(--ink);
  color: var(--paper);
  padding: 80px 0 32px;
}
footer.site .top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(246,245,241,0.16);
}
footer.site .wordmark { font-size: 22px; }
footer.site .wordmark .agi { color: var(--n10); }
footer.site .wordmark .rest { color: var(--paper); }
footer.site .wordmark .bar { height: 20px; }
footer.site h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--n50);
  font-weight: 400;
  margin: 0 0 16px;
}
footer.site ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
footer.site ul a {
  color: var(--paper);
  font-size: 14px;
  opacity: 0.86;
  transition: opacity 200ms var(--ease);
}
footer.site ul a:hover { opacity: 1; }
footer.site .bottom {
  margin-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--n50);
}

/* ---------- Page header (subpages) ---------- */
.page-head {
  padding: clamp(64px, 10vh, 128px) 0 clamp(48px, 8vh, 88px);
  border-bottom: var(--rule);
}
.page-head .row {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(24px, 6vw, 96px);
  align-items: end;
}
.page-head .h1 { max-width: 18ch; }
.page-head .body-l { max-width: 44ch; }
.page-head .meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 48px;
}

/* ---------- Inline ember accent ---------- */
.accent { color: var(--ember); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  nav.primary { display: none; }
  .menu-toggle { display: inline-flex; }
  header.site .cta-ember { display: none; }
  header.site.menu-open nav.primary {
    display: flex;
    position: fixed;
    inset: 72px 0 0 0;
    flex-direction: column;
    background: var(--paper);
    padding: 32px var(--gutter);
    gap: 18px;
    border-top: var(--rule);
  }
  header.site.menu-open nav.primary a {
    font-family: var(--serif);
    font-size: 28px;
    letter-spacing: -0.02em;
    color: var(--ink);
  }
  .hero .lead { grid-template-columns: 1fr; gap: 32px; }
  .hero .lead .right { padding-bottom: 0; }
  .layers { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .etymology { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .product-row { grid-template-columns: 60px 1fr; }
  .product-row .desc, .product-row .signal { grid-column: 2; }
  .product-row .signal { padding-left: 0; border-left: 0; padding-top: 12px; border-top: 1px dashed rgba(11,14,20,0.16); }
  .diagram-row { grid-template-columns: 1fr; gap: 12px; }
  .diagram-row .signal { text-align: left; }
  .contact-grid { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; gap: 12px; }
  .page-head .row { grid-template-columns: 1fr; align-items: start; }
  footer.site .top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
  footer.site .top { grid-template-columns: 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}