/* Northline Systems — site styles */
:root {
  --ink: #16202c;
  --muted: #5b6b7c;
  --line: #e3e8ee;
  --bg: #ffffff;
  --soft: #f6f8fa;
  --accent: #1f6feb;
  --accent-dark: #1755c1;
  --radius: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -.2px;
  color: var(--ink);
  font-size: 17px;
}

.brand:hover { text-decoration: none; }

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #4f93ff);
  display: inline-block;
}

nav.main-nav {
  display: flex;
  gap: 26px;
  align-items: center;
}

nav.main-nav a {
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 500;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--ink);
  text-decoration: none;
}

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
}

.nav-cta:hover { background: var(--accent-dark); text-decoration: none; }

.menu-toggle { display: none; }

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(1100px 380px at 12% -10%, #eaf1ff 0%, rgba(234,241,255,0) 62%),
    var(--bg);
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.12;
  letter-spacing: -1.2px;
  margin: 0 0 18px;
  max-width: 720px;
}

.hero p.lede {
  font-size: clamp(17px, 2.1vw, 20px);
  color: var(--muted);
  max-width: 640px;
  margin: 0 0 32px;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 9px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); text-decoration: none; color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
  margin-left: 10px;
}
.btn-ghost:hover { background: var(--soft); text-decoration: none; }

/* ---------- generic sections ---------- */
section.block { padding: 72px 0; }
section.block.alt { background: var(--soft); }

.section-head { max-width: 660px; margin-bottom: 40px; }
.section-head h2 {
  font-size: clamp(25px, 3.2vw, 34px);
  letter-spacing: -.7px;
  margin: 0 0 12px;
}
.section-head p { color: var(--muted); margin: 0; font-size: 17px; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.card h3 { margin: 0 0 10px; font-size: 18px; letter-spacing: -.3px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.card .icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: #eaf1ff;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 15px;
}

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat .num {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--ink);
}
.stat .lbl { color: var(--muted); font-size: 14px; margin-top: 2px; }

/* ---------- content page ---------- */
.page-head { padding: 56px 0 8px; }
.page-head h1 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.page-head p { color: var(--muted); font-size: 18px; margin: 0; max-width: 680px; }

.prose { max-width: 760px; padding-bottom: 72px; }
.prose h2 { font-size: 23px; letter-spacing: -.5px; margin: 40px 0 12px; }
.prose h3 { font-size: 18px; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--muted); font-size: 16px; }
.prose ul { padding-left: 20px; }
.prose li { margin: 6px 0; }

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px 0 72px;
}

.form-row { margin-bottom: 16px; }
.form-row label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31,111,235,.14);
}

.info-item { margin-bottom: 22px; }
.info-item .k { font-size: 13px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); }
.info-item .v { font-size: 17px; font-weight: 550; margin-top: 3px; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 46px 0 34px;
  background: var(--soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 28px;
}
.footer-grid h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .7px;
  color: var(--muted);
  margin: 0 0 12px;
}
.footer-grid a, .footer-grid p {
  display: block;
  color: var(--muted);
  font-size: 14.5px;
  margin: 0 0 8px;
}
.footer-bottom {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13.5px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 404 ---------- */
.err-wrap {
  min-height: 58vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px 24px;
}
.err-wrap .code {
  font-size: 84px;
  font-weight: 750;
  letter-spacing: -3px;
  color: var(--accent);
  line-height: 1;
}
.err-wrap h1 { font-size: 26px; margin: 18px 0 8px; letter-spacing: -.5px; }
.err-wrap p { color: var(--muted); max-width: 440px; margin: 0 0 26px; }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .grid-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  nav.main-nav { display: none; }
  nav.main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 16px 24px;
    gap: 14px;
    align-items: flex-start;
  }
  .menu-toggle {
    display: inline-flex;
    background: none;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    cursor: pointer;
    color: var(--ink);
  }
}