/* SAI RAI Solutions — V3 Design System
   Palette: Navy authority nav/hero + Oxblood/cream editorial content
   Fonts: Newsreader (serif display) + IBM Plex Sans (UI) + IBM Plex Mono (labels)
*/

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300..700;1,6..72,300..700&family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* Navy authority palette */
  --navy:        #042C53;
  --navy-mid:    #0C447C;
  --navy-light:  #185FA5;
  --navy-muted:  #378ADD;
  --navy-pale:   #85B7EB;
  --navy-frost:  #E6F1FB;

  /* Oxblood/cream editorial palette */
  --cream:       #fbfaf7;
  --cream-2:     #f4f1ea;
  --cream-3:     #ebe6d9;
  --ink:         #1b1b1b;
  --ink-2:       #3a3a37;
  --ink-3:       #6b6a63;
  --line:        #e3ddd0;
  --line-2:      #d4ccb8;
  --oxblood:     #8b2e2e;
  --oxblood-2:   #a84a4a;
  --oxblood-ink: #5a1e1e;
  --sage:        #6b7a65;
  --clay:        #b8764d;
  --amber:       #c9a04a;

  /* Typography */
  --serif: 'Newsreader', 'Source Serif 4', Georgia, serif;
  --sans:  'IBM Plex Sans', ui-sans-serif, system-ui, sans-serif;
  --mono:  'IBM Plex Mono', ui-monospace, Menlo, monospace;

  /* Geometry */
  --radius:    2px;
  --radius-lg: 4px;
  --shadow:    0 8px 28px -14px rgba(27,27,27,0.18), 0 2px 6px -2px rgba(27,27,27,0.08);
  --shadow-lg: 0 24px 60px -24px rgba(27,27,27,0.28), 0 8px 20px -8px rgba(27,27,27,0.1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── LAYOUT ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 700px) { .container { padding: 0 20px; } }

/* ── NAVIGATION ── */
.site-nav {
  background: var(--navy);
  border-bottom: 1px solid rgba(55,138,221,0.15);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  max-width: 1160px;
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav-logo-mark {
  width: 32px; height: 32px;
  border: 1.5px solid var(--navy-muted);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.nav-logo-text { line-height: 1.2; }
.nav-logo-name {
  font-size: 14px; font-weight: 500;
  color: #E6F1FB; letter-spacing: 0.01em;
  display: block;
}
.nav-logo-sub {
  font-family: var(--mono);
  font-size: 10px; color: var(--navy-pale);
  letter-spacing: 0.06em; text-transform: uppercase;
  display: block;
}
.nav-links {
  display: flex; gap: 28px; list-style: none;
}
.nav-links a {
  font-size: 13px; color: var(--navy-pale);
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: #E6F1FB; }
.nav-cta {
  font-family: var(--sans);
  font-size: 13px; font-weight: 500;
  padding: 8px 18px;
  background: transparent;
  color: #E6F1FB;
  border: 1px solid var(--navy-muted);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
  display: inline-block;
}
.nav-cta:hover { background: var(--navy-mid); }

/* ── HERO (navy) ── */
.hero {
  background: var(--navy);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.2 0 0 0 0 0.35 0 0 0 0.12 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  pointer-events: none; opacity: 0.6;
}
.hero .container { position: relative; }

.hero-eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 22px;
}
.eyebrow-rule { width: 28px; height: 1px; background: var(--navy-muted); }
.eyebrow-text {
  font-family: var(--mono);
  font-size: 10.5px; color: var(--navy-muted);
  letter-spacing: 0.12em; text-transform: uppercase;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 380;
  color: #E6F1FB;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 620px;
  margin-bottom: 20px;
}
.hero h1 em { color: var(--navy-muted); font-style: normal; font-weight: 420; }

.hero-sub {
  font-size: 16px; line-height: 1.7;
  color: var(--navy-pale);
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }

/* ── STANDARDS BAR ── */
.standards-bar {
  background: var(--navy-mid);
  border-top: 1px solid rgba(55,138,221,0.2);
  border-bottom: 1px solid rgba(55,138,221,0.2);
  padding: 13px 0;
}
.standards-inner {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap; max-width: 1160px; margin: 0 auto; padding: 0 32px;
}
.standards-label {
  font-family: var(--mono);
  font-size: 10px; color: var(--navy-pale);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-right: 6px; flex-shrink: 0;
}
.std-badge {
  font-family: var(--mono);
  font-size: 10.5px; padding: 3px 10px;
  background: rgba(55,138,221,0.12);
  color: var(--navy-pale);
  border: 1px solid rgba(55,138,221,0.25);
  border-radius: 20px;
}

/* ── PAGE HERO (dark, for inner pages) ── */
.page-hero {
  background: var(--navy);
  padding: 56px 0 48px;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.2 0 0 0 0 0.35 0 0 0 0.12 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  pointer-events: none; opacity: 0.5;
}
.page-hero .container { position: relative; }
.page-hero-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px; color: var(--navy-muted);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 14px; display: block;
}
.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 380; color: #E6F1FB;
  letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 15px; color: var(--navy-pale);
  line-height: 1.7; max-width: 500px;
}

/* ── SECTION LABELS ── */
.section-overline {
  font-family: var(--mono);
  font-size: 10.5px; color: var(--oxblood);
  letter-spacing: 0.12em; text-transform: uppercase;
  display: block; margin-bottom: 10px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 380; letter-spacing: -0.02em;
  color: var(--ink); line-height: 1.3;
  margin-bottom: 8px;
}
.section-sub {
  font-size: 14.5px; color: var(--ink-3);
  line-height: 1.65; max-width: 520px;
}

/* ── BUTTONS ── */
.btn {
  font-family: var(--sans);
  font-size: 14px; font-weight: 500;
  padding: 11px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  background: var(--cream);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: all 0.15s ease;
  text-decoration: none;
}
.btn:hover { border-color: var(--ink); }
.btn-navy {
  background: var(--navy); color: #E6F1FB;
  border-color: var(--navy);
}
.btn-navy:hover { background: var(--navy-mid); border-color: var(--navy-mid); }
.btn-oxblood {
  background: var(--oxblood); color: #fff;
  border-color: var(--oxblood);
}
.btn-oxblood:hover { background: var(--oxblood-ink); border-color: var(--oxblood-ink); }
.btn-ghost-light {
  background: transparent; color: #E6F1FB;
  border-color: rgba(55,138,221,0.5);
}
.btn-ghost-light:hover { background: rgba(55,138,221,0.1); border-color: var(--navy-muted); }

/* ── METRICS ROW ── */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.metric-cell {
  padding: 24px 20px;
  border-right: 1px solid var(--line);
  text-align: center;
}
.metric-cell:last-child { border-right: none; }
.metric-num {
  font-family: var(--serif);
  font-size: 28px; font-weight: 380;
  color: var(--navy); letter-spacing: -0.01em;
  display: block;
}
.metric-label {
  font-family: var(--mono);
  font-size: 10.5px; color: var(--ink-3);
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-top: 4px; display: block;
}

/* ── CONTENT SECTIONS ── */
.section { padding: 72px 0; }
.section-alt { background: var(--cream-2); padding: 72px 0; }
.section-border { border-top: 1px solid var(--line); }

/* ── PROBLEM STATEMENT ── */
.problem-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}
.problem-inner { max-width: 680px; }
.problem-section h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 380; color: var(--ink);
  letter-spacing: -0.02em; line-height: 1.35;
  margin-bottom: 14px;
}
.problem-section p {
  font-size: 15px; color: var(--ink-2);
  line-height: 1.75;
}

/* ── FREE RESOURCE CARDS ── */
.resource-strip { padding: 48px 0; background: var(--cream-2); border-bottom: 1px solid var(--line); }
.resource-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); margin-top: 24px; }
.resource-card {
  background: var(--cream);
  padding: 24px;
  transition: background 0.15s;
  cursor: pointer;
}
.resource-card:hover { background: var(--cream-2); }
.resource-tag {
  font-family: var(--mono);
  font-size: 10px; color: var(--oxblood);
  letter-spacing: 0.12em; text-transform: uppercase;
  display: block; margin-bottom: 10px;
}
.resource-card h3 {
  font-family: var(--serif);
  font-size: 18px; font-weight: 380;
  color: var(--ink); letter-spacing: -0.01em;
  margin-bottom: 8px; line-height: 1.3;
}
.resource-card p { font-size: 13px; color: var(--ink-3); line-height: 1.6; margin-bottom: 14px; }
.resource-link {
  font-family: var(--mono);
  font-size: 10.5px; color: var(--navy-light);
  letter-spacing: 0.08em; text-transform: uppercase;
  display: flex; align-items: center; gap: 6px;
}

/* ── SERVICE CARDS ── */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); margin-top: 24px; }
.svc-card {
  background: var(--cream);
  padding: 28px 24px;
  border-left: 2px solid transparent;
  transition: border-color 0.15s, background 0.15s;
}
.svc-card:hover { border-left-color: var(--oxblood); background: var(--cream-2); }
.svc-num {
  font-family: var(--mono);
  font-size: 10px; color: var(--oxblood);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 12px; display: block;
}
.svc-card h3 {
  font-family: var(--serif);
  font-size: 19px; font-weight: 380;
  color: var(--ink); letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.svc-card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; }
.svc-tag {
  display: inline-block; margin-top: 14px;
  font-family: var(--mono);
  font-size: 10px; padding: 3px 9px;
  background: var(--navy-frost); color: var(--navy);
  border-radius: 20px; letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── SERVICES FULL LIST (services page) ── */
.services-list { display: flex; flex-direction: column; }
.svc-row {
  display: grid; grid-template-columns: 48px 1fr auto;
  gap: 20px; align-items: start;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.12s;
}
.svc-row:first-child { border-top: 1px solid var(--line); }
.svc-row:hover { background: var(--cream-2); margin: 0 -16px; padding-left: 16px; padding-right: 16px; }
.svc-idx {
  font-family: var(--mono);
  font-size: 11px; color: var(--oxblood);
  letter-spacing: 0.1em; padding-top: 3px;
}
.svc-body h3 {
  font-family: var(--serif);
  font-size: 20px; font-weight: 380;
  color: var(--ink); letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.svc-body p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; }
.svc-pill {
  font-family: var(--mono);
  font-size: 10px; padding: 4px 10px;
  background: var(--navy-frost); color: var(--navy);
  border-radius: 20px; white-space: nowrap;
  letter-spacing: 0.06em; text-transform: uppercase;
  align-self: start; margin-top: 3px;
}

/* ── ABOUT ── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-card {
  padding: 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.about-card h2 {
  font-family: var(--serif);
  font-size: 20px; font-weight: 420;
  color: var(--ink); margin-bottom: 12px;
  padding-bottom: 12px; border-bottom: 1px solid var(--line);
  letter-spacing: -0.01em;
}
.about-card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.75; }
.founder-row { display: flex; gap: 14px; align-items: flex-start; }
.founder-avatar {
  width: 48px; height: 48px;
  background: var(--navy); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 500; color: #E6F1FB;
  flex-shrink: 0;
}
.cred-pills { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.cred-pill {
  font-family: var(--mono);
  font-size: 10.5px; padding: 4px 10px;
  background: var(--cream-2);
  border: 1px solid var(--line-2);
  border-radius: 20px; color: var(--ink-2);
}
.align-logos { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.align-logo {
  font-family: var(--mono);
  font-size: 10.5px; padding: 5px 12px;
  background: var(--cream-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius); color: var(--ink-3);
}

/* ── CONTACT ── */
.contact-layout { display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px; align-items: start; }
.contact-sidebar h3 {
  font-family: var(--serif);
  font-size: 18px; font-weight: 380;
  color: var(--ink); margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.contact-point {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.contact-point:first-of-type { border-top: 1px solid var(--line); }
.cp-icon {
  width: 30px; height: 30px;
  background: var(--navy-frost);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px;
}
.cp-text strong { display: block; font-size: 13px; font-weight: 500; color: var(--ink); margin-bottom: 3px; }
.cp-text span { font-size: 13px; color: var(--ink-3); line-height: 1.55; }

/* ── FORM ── */
.form-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.form-row { margin-bottom: 16px; }
.form-label {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px; color: var(--ink-3);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 6px;
}
.form-input, .form-select, .form-textarea {
  width: 100%; font-family: var(--sans);
  font-size: 14px; padding: 10px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--cream); color: var(--ink);
  outline: none; transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--navy-mid);
  box-shadow: 0 0 0 3px rgba(12,68,124,0.08);
}
.form-textarea { min-height: 100px; resize: vertical; }
.form-submit {
  width: 100%; padding: 12px;
  font-family: var(--sans);
  font-size: 14px; font-weight: 500;
  background: var(--navy); color: #E6F1FB;
  border: none; border-radius: var(--radius);
  cursor: pointer; transition: background 0.15s;
}
.form-submit:hover { background: var(--navy-mid); }
.form-note {
  font-size: 11.5px; color: var(--ink-3);
  text-align: center; margin-top: 10px;
  font-family: var(--mono); letter-spacing: 0.03em;
}

/* ── CTA SECTION (dark ink) ── */
.cta-section {
  background: var(--ink); padding: 72px 0;
}
.cta-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 40px;
}
.cta-section h2 {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 380; color: var(--cream);
  letter-spacing: -0.02em; line-height: 1.2;
}
.cta-section p { font-size: 14px; color: var(--ink-3); margin-top: 8px; }

/* ── FOOTER ── */
.site-footer {
  background: var(--navy);
  border-top: 1px solid rgba(55,138,221,0.15);
  padding: 40px 0 28px;
}
.footer-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 32px;
}
.footer-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding-bottom: 28px; border-bottom: 1px solid rgba(55,138,221,0.12);
  margin-bottom: 20px;
}
.footer-logo {
  font-family: var(--serif);
  font-size: 16px; font-weight: 380;
  color: #E6F1FB; letter-spacing: -0.01em;
}
.footer-logo span { color: var(--navy-pale); font-size: 12px; display: block; margin-top: 3px; font-family: var(--mono); letter-spacing: 0.05em; }
.footer-links { display: flex; gap: 24px; list-style: none; }
.footer-links a { font-size: 12.5px; color: var(--navy-pale); transition: color 0.15s; }
.footer-links a:hover { color: #E6F1FB; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap;
}
.footer-copy { font-size: 12px; color: var(--navy-pale); font-family: var(--mono); letter-spacing: 0.04em; }
.footer-build { font-size: 10px; color: var(--navy-pale); font-family: var(--mono); letter-spacing: 0.06em; opacity: 0.45; text-align: center; margin-top: 10px; }

/* ── RAI TOOL HERO ── */
.rai-hero { background: var(--oxblood); padding: 64px 0 56px; position: relative; overflow: hidden; }
.rai-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.05 0 0 0 0 0.05 0 0 0 0.15 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  pointer-events: none; opacity: 0.5;
}
.rai-hero .container { position: relative; }
.rai-hero h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 380; color: #fbfaf7;
  letter-spacing: -0.02em; line-height: 1.15;
  margin-bottom: 16px;
}
.rai-hero h1 em { color: #f4c9c9; font-style: normal; }
.rai-hero p { font-size: 15px; color: rgba(251,250,247,0.75); line-height: 1.7; max-width: 480px; margin-bottom: 32px; }
.rai-stats { display: flex; gap: 32px; padding-top: 28px; border-top: 1px solid rgba(251,250,247,0.15); }
.rai-stat-k { font-family: var(--serif); font-size: 26px; font-weight: 380; color: #fbfaf7; }
.rai-stat-v { font-family: var(--mono); font-size: 10px; color: rgba(251,250,247,0.55); letter-spacing: 0.1em; text-transform: uppercase; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeUp 0.45s cubic-bezier(0.2, 0.8, 0.2, 1) both; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .metrics-row { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .resource-cards { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; }
  .footer-top { flex-direction: column; gap: 20px; }
  .svc-row { grid-template-columns: 36px 1fr; }
  .svc-pill { display: none; }
  .nav-links { display: none; }
  .nav-cta { font-size: 12px; padding: 7px 12px; }
  .nav-inner { padding: 12px 16px; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 28px; }
  .page-hero { padding: 40px 0 32px; }
}