/* TechNexus Shared Design System */
:root {
  --dark: #001932;
  --dark-mid: #0a2540;
  --orange: #F99601;
  --orange-soft: #f9a82e;
  --white: #ffffff;
  --off-white: #fafaf8;
  --text-primary: #001932;
  --text-body: #3d3d3d;
  --text-secondary: #6b6b6b;
  --text-muted: #9a9a9a;
  --rule: #d4d3cf;
  --rule-light: #e8e7e3;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--off-white);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }

/* Header */
header {
  background: var(--dark);
  height: 80px;
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center;
}
.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 40px;
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-family: 'Inter', sans-serif;
  font-size: 16px; font-weight: 700;
  color: var(--white);
  letter-spacing: 0.5px;
  display: flex; align-items: center; gap: 10px;
}
.logo-mark {
  width: 20px; height: 20px;
  background: var(--orange);
  opacity: 0.95;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
nav { display: flex; gap: 20px; align-items: center; }
nav a {
  font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.75);
  letter-spacing: 0.2px; transition: 0.2s ease;
}
nav a:hover { color: rgba(255,255,255,0.9); }
nav a.active { color: var(--orange); border-bottom: 2px solid var(--orange); padding-bottom: 2px; }
nav a.orange { color: var(--orange); opacity: 0.7; }
nav a.orange:hover { opacity: 1; }

/* Mobile menu toggle */
.menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 44px; height: 44px;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  z-index: 101;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  background: rgba(255,255,255,0.7); transition: 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn-ghost {
  font-size: 13px; font-weight: 600; color: var(--dark);
  background: var(--orange); border: none;
  padding: 8px 20px; border-radius: 4px;
  letter-spacing: 0.2px; transition: 0.2s ease;
}
.btn-ghost:hover { background: var(--orange-soft); color: var(--dark); }

/* Focus indicators for keyboard navigation */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
  border-radius: 2px;
}
nav a:focus-visible { outline-offset: 4px; }

/* Shared layout */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.kicker {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 2px; color: var(--orange); margin-bottom: 12px;
}
.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--rule); }

/* Buttons */
.btn-orange {
  display: inline-block; background: var(--orange); color: var(--dark);
  font-size: 14px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; padding: 16px 36px;
  border-radius: 3px; white-space: nowrap;
  transition: 0.2s ease;
}
.btn-orange:hover { background: var(--orange-soft); transform: translateY(-1px); }

/* CTA Band */
.cta-band {
  background: var(--dark);
  border-top: 3px solid var(--orange);
  padding: 64px 40px;
}
.cta-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.cta-inner h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 32px; color: var(--white); margin-bottom: 8px;
}
.cta-inner p { color: rgba(255,255,255,0.65); font-size: 15px; line-height: 1.6; max-width: 600px; }

/* Footer */
footer {
  background: var(--dark);
  border-top: 3px solid var(--orange);
  padding: 36px 40px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}
.footer-copy { color: rgba(255,255,255,0.55); font-size: 12px; }
.footer-links { display: flex; gap: 28px; }
.footer-links a {
  color: rgba(255,255,255,0.6); font-size: 12px; font-weight: 500;
  transition: 0.2s ease;
}
.footer-links a:hover { color: rgba(255,255,255,0.8); }

/* Footer ecosystem band */
.footer-eco-band {
  display: flex; align-items: center; gap: 20px;
  margin-bottom: 20px; padding-bottom: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-eco-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: rgba(255,255,255,0.3); white-space: nowrap;
}
.footer-eco-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-eco-link {
  font-size: 12px; font-weight: 500; color: rgba(255,255,255,0.45);
  display: inline-flex; align-items: center; gap: 4px; transition: 0.2s;
}
.footer-eco-link:hover { color: var(--orange); }
.footer-eco-link svg {
  width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 2;
}

/* Fade-in animation */
.fade-in {
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Loading state */
.loading {
  text-align: center; padding: 60px 20px;
  color: var(--text-muted); font-size: 14px;
}

/* Tablet & Mobile */
@media (max-width: 900px) {
  .header-inner, .wrap, .cta-inner { padding: 0 24px; }
  .hide-mobile { display: none; }

  /* Mobile nav */
  .menu-toggle { display: flex; }
  nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--dark); flex-direction: column;
    padding: 8px 24px 20px; gap: 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
  }
  nav.open { display: flex; }
  nav a {
    font-size: 15px; padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.7);
  }
  nav a:last-child { border-bottom: none; }
  .btn-ghost {
    text-align: center; margin-top: 8px;
    padding: 12px 18px; font-size: 14px;
  }

  .cta-inner { flex-direction: column; text-align: center; gap: 32px; }
  .cta-inner h2 { font-size: 28px; }
  .btn-orange { width: 100%; text-align: center; padding: 18px 36px; }

  footer { padding: 36px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 16px; }
  .footer-eco-band { flex-direction: column; align-items: flex-start; gap: 12px; }
}