/* OakTech Solutions — Systems Blueprint theme */
:root {
  --bg: #FAFAF7;
  --navy: #0F2540;
  --slate: #4A5A6A;
  --rust: #C4703A;
  --grid-line: #DDE1E6;
  --text: #1E2A38;
  --sans: 'Inter', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background:
    linear-gradient(var(--bg), var(--bg)),
    repeating-linear-gradient(0deg, transparent, transparent 39px, var(--grid-line) 39px, var(--grid-line) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, var(--grid-line) 39px, var(--grid-line) 40px);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.coord { font-family: var(--mono); font-size: 11px; color: var(--rust); letter-spacing: 0.04em; }
img { max-width: 100%; display: block; }

/* Header */
header.site-header {
  background: rgba(250,250,247,0.92);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--grid-line);
  position: sticky; top: 0; z-index: 20;
}
.nav-row { display: flex; justify-content: space-between; align-items: center; padding: 22px 0; }
.logo { font-family: var(--mono); font-size: 16px; font-weight: 600; color: var(--navy); }
.logo::before { content: '▣ '; color: var(--rust); }
nav.main-nav ul { display: flex; gap: 0; list-style: none; }
nav.main-nav li { border-left: 1px solid var(--grid-line); }
nav.main-nav a {
  font-family: var(--mono); font-size: 12px; padding: 0 16px; text-transform: uppercase;
  color: var(--slate); display: block;
}
nav.main-nav a:hover, nav.main-nav a.active { color: var(--navy); }
.nav-cta { font-family: var(--mono); font-size: 12px; border: 1px solid var(--navy); padding: 9px 16px; color: var(--navy); }
.nav-toggle { display: none; }

/* Page hero (interior pages) */
.page-hero { padding: 64px 0 50px; border-bottom: 1px solid var(--grid-line); }
.page-hero .hero-tag { font-family: var(--mono); font-size: 12px; color: var(--rust); text-transform: uppercase; }
.page-hero h1 { font-size: 42px; font-weight: 700; letter-spacing: -0.015em; line-height: 1.15; max-width: 780px; margin-top: 16px; color: var(--navy); }
.page-hero p.lede { max-width: 620px; margin-top: 18px; font-size: 16px; color: var(--slate); }

/* Home hero */
.hero { padding: 80px 0; border-bottom: 1px solid var(--grid-line); }
.hero h1 { font-size: 50px; font-weight: 700; letter-spacing: -0.015em; line-height: 1.14; max-width: 820px; margin-top: 20px; color: var(--navy); }
.hero p.lede { max-width: 560px; margin-top: 22px; font-size: 16.5px; color: var(--slate); }
.hero-specs { display: flex; gap: 0; margin-top: 50px; font-family: var(--mono); flex-wrap: wrap; }
.spec { padding-right: 44px; border-right: 1px solid var(--grid-line); margin-right: 44px; margin-bottom: 12px; }
.spec:last-child { border-right: none; }
.spec b { font-size: 24px; color: var(--navy); display: block; }
.spec span { font-size: 11px; color: var(--slate); text-transform: uppercase; }

/* Sections */
section { padding: 70px 0; border-bottom: 1px solid var(--grid-line); }
section.no-border { border-bottom: none; }
.sec-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 42px; }
.sec-head h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--navy); font-weight: 700; }
.sec-head .rule { flex: 1; height: 1px; background: var(--grid-line); }

/* Values grid */
.values-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--grid-line); border: 1px solid var(--grid-line); }
.value-cell { background: var(--bg); padding: 26px; }
.value-cell h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin: 12px 0 8px; }
.value-cell p { font-size: 13px; color: var(--slate); }

/* Sectors grid */
.sectors-row { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--grid-line); border: 1px solid var(--grid-line); }
.sector-cell { background: var(--bg); padding: 28px; }
.sector-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.sector-head h3 { font-size: 18px; font-weight: 700; color: var(--navy); }
.sector-cell > p { font-size: 13.5px; color: var(--text); }
.sector-out { margin-top: 16px; font-size: 12.5px; color: var(--navy); font-weight: 600; padding-top: 12px; border-top: 1px dashed var(--grid-line); }
.sector-out span { font-family: var(--mono); color: var(--rust); font-size: 10px; display: block; margin-bottom: 4px; }
.sector-cell a.more { display: inline-block; margin-top: 14px; font-family: var(--mono); font-size: 11px; color: var(--rust); text-transform: uppercase; border-bottom: 1px solid var(--rust); }

/* Sector detail table (used on sectors.html) */
.usecase-table { border: 1px solid var(--grid-line); margin-top: 20px; }
.usecase-row { display: grid; grid-template-columns: 70px 1fr 1fr 1fr; border-bottom: 1px solid var(--grid-line); }
.usecase-row:last-child { border-bottom: none; }
.usecase-row.head { background: var(--navy); color: #fff; font-family: var(--mono); font-size: 11px; text-transform: uppercase; }
.usecase-row > div { padding: 18px 20px; border-right: 1px solid var(--grid-line); font-size: 13px; }
.usecase-row.head > div { border-right: 1px solid #2A3F5C; }
.usecase-row > div:last-child { border-right: none; }
.usecase-row .idx { font-family: var(--mono); color: var(--rust); font-size: 12px; }

/* Leadership grid */
.leaders-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--grid-line); border: 1px solid var(--grid-line); }
.leader-cell { background: var(--bg); }
.leader-photo img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; filter: grayscale(15%) contrast(1.02); }
.leader-meta { padding: 14px 16px 20px; }
.leader-meta h4 { font-size: 14px; font-weight: 700; color: var(--navy); margin-top: 6px; }
.role { font-size: 11px; color: var(--slate); display: block; margin-top: 3px; }
.leader-bio { font-size: 12.5px; color: var(--slate); margin-top: 10px; }

/* Locations */
.locations-row { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--grid-line); border: 1px solid var(--grid-line); }
.loc-cell { background: var(--bg); padding: 28px; position: relative; }
.loc-cell h4 { font-size: 19px; font-weight: 700; color: var(--navy); margin-top: 10px; }
.loc-cell p { font-size: 13px; color: var(--slate); margin-top: 6px; }
.country-label { position: absolute; top: 26px; right: 28px; font-family: var(--mono); font-size: 10px; color: var(--rust); text-transform: uppercase; }

/* Generic content blocks (About, Privacy, Terms) */
.prose { max-width: 780px; }
.prose h2 { font-size: 20px; color: var(--navy); margin: 34px 0 12px; font-weight: 700; }
.prose h2:first-child { margin-top: 0; }
.prose p { font-size: 14.5px; color: var(--text); margin-bottom: 12px; }
.prose ul { margin: 0 0 12px 20px; }
.prose li { font-size: 14.5px; color: var(--text); margin-bottom: 6px; }
.doc-meta { font-family: var(--mono); font-size: 11px; color: var(--slate); text-transform: uppercase; margin-bottom: 30px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--grid-line); border: 1px solid var(--grid-line); }
.contact-cell { background: var(--bg); padding: 32px; }
.contact-cell h3 { font-size: 16px; color: var(--navy); margin-bottom: 10px; }
.contact-cell p, .contact-cell a { font-size: 14px; color: var(--slate); }
.contact-cell a.email-link { color: var(--rust); font-family: var(--mono); font-size: 14px; }

/* Footer */
footer.site-footer { padding: 46px 0; }
.footer-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer-links { display: flex; gap: 26px; font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--slate); flex-wrap: wrap; }

/* Responsive */
@media (max-width: 900px) {
  .values-row, .sectors-row, .leaders-row, .locations-row, .contact-grid { grid-template-columns: repeat(2,1fr); }
  .usecase-row { grid-template-columns: 1fr; }
  .usecase-row > div { border-right: none; border-bottom: 1px solid var(--grid-line); }
  .hero h1, .page-hero h1 { font-size: 32px; }
  nav.main-nav { display: none; }
}
@media (max-width: 560px) {
  .values-row, .sectors-row, .leaders-row, .locations-row, .contact-grid { grid-template-columns: 1fr; }
  .wrap { padding: 0 22px; }
}