/* ============================================
   OCTA IT SOLUTIONS — Design System
   Palette: Deep navy, electric blue, teal-cyan accent
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (data)
   ============================================ */

:root {
  --navy: #0B1220;
  --navy-soft: #101A2E;
  --bg: #F7F9FC;
  --bg-card: #FFFFFF;
  --blue: #1E5FFF;
  --blue-dim: #E8EFFF;
  --teal: #00D4B8;
  --slate: #64748B;
  --slate-dark: #334155;
  --line: #E2E8F0;
  --white: #FFFFFF;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(11, 18, 32, 0.06);
  --shadow-lg: 0 12px 48px rgba(11, 18, 32, 0.12);
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--slate-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.3rem; }

p { color: var(--slate); }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(0, 212, 184, 0.18);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(30, 95, 255, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(30, 95, 255, 0.35); }

.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--line);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }

.btn-ghost-light {
  background: rgba(255,255,255,0.08);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-ghost-light:hover { background: rgba(255,255,255,0.16); transform: translateY(-2px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(247, 249, 252, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 75px;
  width: 207px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--slate-dark);
  position: relative;
  padding: 6px 0;
  transition: color 0.15s ease;
}

.nav-links a:hover { color: var(--blue); }

.nav-links a.active { color: var(--blue); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-cta .btn { padding: 10px 20px; font-size: 0.88rem; }

.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--navy);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: 0.25s ease;
}

/* ---------- Sections generic ---------- */
section { padding: 96px 0; }
.section-tight { padding: 64px 0; }

.section-head {
  max-width: 820px;
  margin-bottom: 56px;
}
.section-head h2 { text-wrap: balance; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 72px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-col h4 {
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 600;
}

.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 0.92rem; transition: color 0.15s ease; }
.footer-col ul li a:hover { color: var(--teal); }

.footer-contact li {
  font-size: 0.92rem;
  margin-bottom: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.footer-contact svg { flex-shrink: 0; margin-top: 3px; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 16px;
}

.social-row { display: flex; gap: 12px; }
.social-row a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s ease;
}
.social-row a:hover { background: var(--blue); border-color: var(--blue); }

/* ---------- Mobile ---------- */
@media (max-width: 900px) {
  .nav-wrap { height: 68px; }
  .logo-img { height: 46px; width: auto; }
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-150%);
    opacity: 0;
    transition: all 0.25s ease;
    pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-phone { display: none; }
  .nav-cta .btn { flex-shrink: 0; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 64px 0; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .nav-cta .btn { padding: 10px 16px; font-size: 0.82rem; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}