/* =========================================================
   PARAGMATIQ SYSTEMS — DESIGN SYSTEM
   Modern challenger, US-credentialed, technical-document aesthetic.
   Navy + Bone + Gold + Federal Red. Single-weight hairlines.
   ========================================================= */

:root {
  /* Surfaces */
  --navy:        #0A1F44;
  --navy-2:      #14305C;
  --navy-3:      #1F4280;
  --navy-4:      #2A5BA8;
  --navy-line:   rgba(255,255,255,0.10);
  --navy-line-2: rgba(255,255,255,0.18);

  --bone:        #F7F2E8;
  --bone-2:      #EDE5D3;
  --bone-3:      #E0D6BD;
  --paper:       #FFFFFF;

  /* Ink scale */
  --ink:        #0B0F1A;
  --ink-2:      #1B2030;
  --ink-3:      #3A4055;
  --ink-4:      #6E7384;
  --ink-5:      #A0A4B0;

  /* Accents */
  --gold:        #C9A14A;
  --gold-2:      #B58836;
  --gold-3:      #8C6F2E;
  --gold-soft:   #E8D8A8;

  --red:         #B22234;
  --red-2:       #8B1A29;

  --cyan:        #7AC9D1;   /* technical / blueprint stroke */

  /* Type */
  --font-display: 'Inter Tight', ui-sans-serif, system-ui, sans-serif;
  --font-body:    'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-serif:   'Source Serif 4', Georgia, 'Times New Roman', serif;

  /* Layout */
  --maxw:        1320px;
  --maxw-wide:   1480px;
  --gutter:      28px;
  --section-pad-y: 128px;
  --hair-light: 1px solid rgba(10,31,68,0.14);
  --hair-dark:  1px solid rgba(255,255,255,0.12);

  --shadow-1: 0 1px 0 rgba(10,31,68,0.05);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-feature-settings: "ss01", "cv11";
  color: var(--ink);
  background: var(--bone);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ------------------ TYPOGRAPHY ------------------ */
.font-display { font-family: var(--font-display); letter-spacing: -0.03em; }
.font-mono    { font-family: var(--font-mono); letter-spacing: 0.04em; }
.font-serif   { font-family: var(--font-serif); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0;
  line-height: 1.0;
  text-wrap: balance;
  color: var(--ink);
}
h1 { font-weight: 800; }
h2 { font-weight: 700; }
p {
  margin: 0;
  line-height: 1.55;
  text-wrap: pretty;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--gold);
}
.eyebrow.on-dark { color: var(--bone-3); }
.eyebrow.on-dark::before { background: var(--gold); }

/* ------------------ LAYOUT ------------------ */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-wide {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { position: relative; }
.section { padding-block: var(--section-pad-y); }
.section-sm { padding-block: 80px; }
.section-xs { padding-block: 56px; }

.on-navy {
  background: var(--navy);
  color: var(--bone);
}
.on-navy h1, .on-navy h2, .on-navy h3, .on-navy h4 { color: var(--paper); }
.on-navy p { color: var(--bone-3); }

.on-bone {
  background: var(--bone);
  color: var(--ink);
}
.on-paper {
  background: var(--paper);
  color: var(--ink);
}

/* ------------------ HAIRLINES & RULES ------------------ */
.rule        { height: 1px; background: rgba(10,31,68,0.14); width: 100%; border: 0; }
.rule-strong { height: 1px; background: rgba(10,31,68,0.30); width: 100%; border: 0; }
.rule-dark   { height: 1px; background: rgba(255,255,255,0.12); width: 100%; border: 0; }
.rule-gold   { height: 2px; background: var(--gold); width: 56px; border: 0; }

/* ------------------ BUTTONS ------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 26px;
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0;
  border: 1px solid transparent;
  border-radius: 0;
  transition: all 0.16s ease;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.btn .arrow { transition: transform 0.16s ease; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--gold);
  color: var(--navy);
  border-color: var(--gold);
}
.btn-primary:hover { background: var(--gold-2); border-color: var(--gold-2); }

.btn-secondary {
  background: var(--navy);
  color: var(--bone);
  border-color: var(--navy);
}
.btn-secondary:hover { background: var(--navy-2); border-color: var(--navy-2); }

.btn-ghost-dark {
  background: transparent;
  color: var(--bone);
  border-color: rgba(255,255,255,0.30);
}
.btn-ghost-dark:hover { border-color: var(--gold); color: var(--gold); }

.btn-ghost-light {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-ghost-light:hover { background: var(--ink); color: var(--bone); }

.btn-link {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 4px;
  transition: gap 0.16s ease;
}
.btn-link:hover { gap: 16px; }
.btn-link.on-dark { color: var(--bone); border-color: var(--gold); }

/* ------------------ MONO CHIPS / TAGS ------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  color: var(--ink-4);
  background: transparent;
  white-space: nowrap;
}
.chip-solid {
  background: rgba(10,31,68,0.04);
  border-color: rgba(10,31,68,0.18);
  color: var(--ink-3);
}
.chip-dark {
  background: rgba(255,255,255,0.04);
  border-color: var(--navy-line-2);
  color: var(--bone-3);
}
.chip-gold {
  background: var(--gold-soft);
  border-color: var(--gold);
  color: var(--gold-3);
}
.chip-red {
  background: rgba(178,34,52,0.08);
  border-color: var(--red);
  color: var(--red);
}
.chip-dot::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ------------------ NAV ------------------ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--navy);
  color: var(--bone);
  border-bottom: 1px solid var(--navy-line);
}
.topbar-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 76px;
  gap: 36px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--paper);
}
.brand-mark .mark-glyph {
  width: 28px; height: 28px;
  display: inline-block;
}
.brand-mark .mark-suffix {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.20em;
  color: var(--gold);
  text-transform: uppercase;
  font-weight: 500;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  justify-content: center;
}
.nav-item {
  position: relative;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--bone);
  padding: 8px 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border: none;
  background: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color 0.15s;
}
.nav-item:hover { color: var(--gold); }
.nav-item.active { color: var(--gold); }
.nav-item .chev {
  width: 7px; height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
}

.dropdown {
  position: absolute;
  top: calc(100% + 1px);
  left: -16px;
  min-width: 480px;
  background: var(--navy-2);
  border: 1px solid var(--navy-line-2);
  padding: 8px;
  display: grid;
  gap: 0;
  box-shadow: 0 30px 60px rgba(0,0,0,0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.18s ease;
}
.dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-row {
  display: grid;
  grid-template-columns: 30px 1fr 14px;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  transition: background 0.12s ease;
  color: var(--bone);
  align-items: start;
}
.dropdown-row:hover { background: rgba(201,161,74,0.06); }
.dropdown-row .num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold);
  letter-spacing: 0.14em;
  padding-top: 3px;
}
.dropdown-row .title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dropdown-row .desc {
  font-size: 12.5px;
  color: var(--bone-3);
  margin-top: 4px;
  line-height: 1.45;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-body);
}
.dropdown-row .arrow {
  color: var(--gold);
  font-family: var(--font-mono);
  padding-top: 2px;
}
.dropdown-foot {
  margin-top: 4px;
  padding: 12px 16px;
  border-top: 1px solid var(--navy-line);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-5);
}
.dropdown-foot a { color: var(--gold); }

/* Right side controls */
.nav-right { display: flex; align-items: center; gap: 14px; }
.site-indicator {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bone-3);
  padding: 6px 12px;
  border: 1px solid var(--navy-line-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.site-indicator::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}
.cross-site {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bone-3);
  border-bottom: 1px solid var(--navy-line-2);
  padding-bottom: 4px;
}
.cross-site:hover { color: var(--gold); border-color: var(--gold); }

/* ------------------ FOOTER ------------------ */
.footer {
  background: var(--navy);
  color: var(--bone);
  padding: 96px 0 32px;
  border-top: 1px solid var(--navy-line);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--navy-line);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.footer-brand .brand-mark { color: var(--paper); }
.footer-tag {
  font-size: 14px;
  color: var(--bone-3);
  max-width: 260px;
  line-height: 1.55;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 22px;
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  font-size: 14px;
  color: var(--bone);
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--gold); }
.footer-meta {
  padding-top: 32px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-5);
  line-height: 1.7;
}
.footer-meta .footer-legal-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.footer-meta .footer-legal-row a { color: var(--bone-3); }

/* ------------------ BLUEPRINT BOX ------------------ */
.blueprint {
  position: relative;
  background: var(--navy);
  border: 1px solid var(--gold);
  overflow: hidden;
  color: var(--bone);
}
.blueprint.on-light {
  background: var(--bone-2);
  border-color: rgba(10,31,68,0.30);
  color: var(--navy);
}
.blueprint::before {
  /* coordinate grid */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(122,201,209,0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,201,209,0.10) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.blueprint.on-light::before {
  background-image:
    linear-gradient(rgba(10,31,68,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,31,68,0.08) 1px, transparent 1px);
}
.blueprint-corner {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-3);
  pointer-events: none;
  z-index: 3;
}
.blueprint.on-light .blueprint-corner { color: var(--ink-3); }
.blueprint-meta {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-3);
  pointer-events: none;
  z-index: 3;
}
.blueprint.on-light .blueprint-meta { color: var(--ink-3); }
.blueprint-tag { color: var(--gold); }
.blueprint-svg {
  position: absolute;
  inset: 36px;
  z-index: 2;
}

/* ------------------ DATA TABLES ------------------ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
}
.data-table th,
.data-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(10,31,68,0.14);
  vertical-align: top;
}
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-4);
  border-bottom: 1px solid var(--ink);
  font-weight: 500;
  padding: 14px 18px 16px;
}

/* ------------------ SECTION HEAD ------------------ */
.section-head {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: end;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(10,31,68,0.18);
  margin-bottom: 64px;
}
.section-head.on-dark { border-bottom-color: var(--navy-line); }
.section-head .lead { }
.section-head h2 {
  font-size: clamp(40px, 4.8vw, 64px);
  margin-top: 20px;
  max-width: 22ch;
  letter-spacing: -0.035em;
  line-height: 1.0;
}
.section-head .side-note {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-3);
  padding-bottom: 6px;
  border-left: 1px solid var(--gold);
  padding-left: 18px;
}
.section-head.on-dark .side-note { color: var(--bone-3); border-left-color: var(--gold); }

/* ------------------ INDEX STRIP ------------------ */
.index-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid var(--navy-line);
  border-bottom: 1px solid var(--navy-line);
}
.index-strip-cell {
  padding: 24px 24px;
  border-right: 1px solid var(--navy-line);
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--bone);
  background: transparent;
  transition: background 0.16s ease;
}
.index-strip-cell:hover { background: rgba(201,161,74,0.06); }
.index-strip-cell:last-child { border-right: none; }
.index-strip-cell .index-title { font-family: var(--font-display); font-size: 16px; font-weight: 700; line-height: 1.2; letter-spacing: -0.005em; color: var(--paper); text-transform: uppercase; letter-spacing: 0.02em; }

/* ------------------ REVEAL ON SCROLL ------------------ */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------ MISC ------------------ */
#root { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }

/* Responsive */
@media (max-width: 1080px) {
  :root { --section-pad-y: 80px; }
  .topbar-inner { gap: 24px; }
  .nav-links { gap: 22px; }
  .nav-item { font-size: 13px; }
}
@media (max-width: 920px) {
  :root { --section-pad-y: 72px; }
  .topbar-inner { grid-template-columns: 1fr auto; height: 64px; }
  .nav-links { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section-head { grid-template-columns: 1fr; gap: 28px; }
  .section-head h2 { font-size: clamp(32px, 6vw, 48px); }
}

/* ------------------ HERO: oversized H1 + index strip ------------------ */
.hero-page {
  padding-top: 80px;
  padding-bottom: 0;
}
.hero-page h1 {
  font-size: clamp(56px, 8vw, 132px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.96;
  color: var(--paper);
  margin-top: 32px;
  max-width: 16ch;
}
.hero-page p.subhead {
  margin-top: 28px;
  font-size: 19px;
  line-height: 1.5;
  color: var(--bone-3);
  max-width: 56ch;
}
.hero-page .hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--navy-line);
  border-bottom: 1px solid var(--navy-line);
}
.hero-page .hero-meta-cell {
  padding: 18px 24px;
  border-right: 1px solid var(--navy-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hero-page .hero-meta-cell:last-child { border-right: none; }
.hero-page .hero-meta-cell .label { color: var(--ink-5); }
.hero-page .hero-meta-cell .value { color: var(--bone); display: block; margin-top: 4px; font-size: 13px; letter-spacing: 0.12em; }
.hero-page .hero-meta-cell .value.gold { color: var(--gold); }
@media (max-width: 720px) {
  .hero-page .hero-meta { grid-template-columns: 1fr 1fr; }
  .hero-page .hero-meta-cell:nth-child(2) { border-right: none; }
  .hero-page .hero-meta-cell:nth-child(1), .hero-page .hero-meta-cell:nth-child(2) { border-bottom: 1px solid var(--navy-line); }
}