/* ================================================================
   SVRNG DATA — Design system
   Navy + Cyan/Blue + Bone · Fraunces + DM Sans + JetBrains Mono
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400;1,9..144,500;1,9..144,600&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* ============ Family-shared tokens ============ */
  --navy: #1B3A5C;
  --navy-deep: #142E48;
  --navy-soft: #5A7A95;
  --bone: #F5F5F4;
  --bone-soft: #FAFAF8;
  --white: #FFFFFF;
  --line: #E5E7EB;

  /* ============ SVRNG DATA accent (from logo) ============ */
  --blue: #2C5C8F;           /* deep blue from logo center */
  --blue-mid: #4A7FB8;       /* medium blue */
  --blue-light: #7BC4E8;     /* cyan accent — used like gold in SVRNG PAY */
  --blue-glow: #A5DCEF;      /* lightest cyan */

  /* ============ Status ============ */
  --success: #047857;
  --warning: #B45309;
  --danger: #BE123C;

  /* ============ Typography ============ */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* ============ Spacing ============ */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--navy);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ============ Layout ============ */

.section {
  padding: var(--space-9) 0;
  background: var(--white);
}
.section.bg-bone-soft { background: var(--bone-soft); }
.section.bg-navy {
  background: var(--navy);
  color: var(--bone);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.section-narrow {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

/* ============ Typography ============ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: var(--space-4);
  font-weight: 500;
}
.section.bg-navy .eyebrow { color: var(--blue-light); }

.display-h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: var(--navy);
}
.display-h1 em {
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
}
.section.bg-navy .display-h1 { color: var(--bone); }
.section.bg-navy .display-h1 em { color: var(--blue-light); }

.display-h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 500;
  color: var(--navy);
}
.display-h2 em {
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
}
.section.bg-navy .display-h2 { color: var(--bone); }
.section.bg-navy .display-h2 em { color: var(--blue-light); }

.display-h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.5vw, 28px);
  line-height: 1.25;
  font-weight: 500;
  color: var(--navy);
}
.display-h3 em {
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
}

.lead-text {
  font-size: 19px;
  line-height: 1.6;
  color: var(--navy-soft);
  max-width: 640px;
}
.section-narrow .lead-text { margin: 0 auto; }
.section.bg-navy .lead-text { color: rgba(245, 245, 244, 0.85); }

.mono { font-family: var(--font-mono); }

/* ============ Buttons ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-large { padding: 16px 28px; font-size: 15px; }
.btn-small { padding: 8px 14px; font-size: 13px; }

.btn-primary {
  background: var(--navy);
  color: var(--bone);
  border-color: var(--navy);
}
.btn-primary:hover {
  background: var(--blue);
  border-color: var(--blue);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--navy);
  background: var(--bone-soft);
}
.section.bg-navy .btn-ghost {
  color: var(--bone);
  border-color: rgba(245, 245, 244, 0.3);
}
.section.bg-navy .btn-ghost:hover {
  border-color: var(--blue-light);
  background: rgba(123, 196, 232, 0.08);
}

/* ============ Site nav ============ */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--navy);
}
.brand-text .data { color: var(--blue); }
.brand-mark {
  width: 28px;
  height: 28px;
  background-image: url('/assets/img/svrngdata-logo.jpeg');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 4px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-6);
  font-size: 14px;
  color: var(--navy-soft);
}
.nav-links a:hover { color: var(--navy); }
.nav-links a.active { color: var(--blue); font-weight: 500; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions { gap: var(--space-2); }
  .brand-text { font-size: 16px; }
}

/* ============ Hero logo ============ */

.hero-logo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-7);
}
.hero-logo-img {
  max-width: 280px;
  height: auto;
  display: block;
}

/* ============ Cards ============ */

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-7);
}

.pillar-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: var(--space-7);
  transition: all 0.2s ease;
}
.pillar-card:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(27, 58, 92, 0.12);
}
.pillar-card .pillar-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  display: block;
}
.pillar-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: var(--space-3);
}
.pillar-card h3 em {
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
}
.pillar-card p {
  color: var(--navy-soft);
  line-height: 1.7;
}

/* ============ Use case cards ============ */

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-7);
}
.usecase-card {
  background: var(--bone-soft);
  border-left: 3px solid var(--blue-light);
  border-radius: 0 8px 8px 0;
  padding: var(--space-5);
}
.usecase-card .usecase-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: var(--space-2);
  display: block;
}
.usecase-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: var(--space-2);
}
.usecase-card p {
  color: var(--navy-soft);
  font-size: 14px;
  line-height: 1.6;
}

/* ============ Step list ============ */

.step-list {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-7);
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.step-item {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-5);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
  flex-shrink: 0;
  padding-top: 2px;
  min-width: 32px;
  font-weight: 500;
}
.step-content h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 4px;
}
.step-content p {
  color: var(--navy-soft);
  font-size: 14px;
  line-height: 1.7;
}

/* ============ Disclaimer / mono boxes ============ */

.disclaimer-box {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--navy-soft);
  line-height: 1.7;
  padding: var(--space-4);
  background: var(--bone-soft);
  border-left: 3px solid var(--blue-light);
  margin-top: var(--space-5);
  border-radius: 0 6px 6px 0;
}
.disclaimer-box strong { color: var(--navy); }

/* ============ Footer ============ */

.site-footer {
  background: var(--navy);
  color: var(--bone);
  padding: var(--space-9) var(--space-6) var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  max-width: 1200px;
  margin: 0 auto;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: var(--space-4);
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}
.footer-col a {
  font-size: 14px;
  color: rgba(245, 245, 244, 0.75);
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--blue-light); }
.footer-brand p {
  font-size: 14px;
  color: rgba(245, 245, 244, 0.7);
  line-height: 1.6;
  max-width: 280px;
  margin-top: var(--space-3);
}
.brand-text-footer {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-text-footer .data { color: var(--blue-light); }

.footer-bottom {
  max-width: 1200px;
  margin: var(--space-7) auto 0;
  padding-top: var(--space-5);
  border-top: 1px solid rgba(245, 245, 244, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(245, 245, 244, 0.5);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .section { padding: var(--space-7) 0; }
}