/* ============================================================
   ACU LABS — Military / tactical theme
   Palette: matte black, OD green, tactical amber, signal red
   ============================================================ */

:root {
  --bg:           #0a0d0a;
  --bg-2:         #0f1310;
  --bg-3:         #141a14;
  --ink:          #e6efe3;       /* slightly brighter for AA contrast */
  --ink-dim:      #9aa894;       /* lifted from #8a9785 for AA */
  --ink-faint:    #6c7868;       /* lifted from #4a5446 for AA */
  --od:           #4a5d3a;       /* olive drab */
  --od-bright:    #9bc079;       /* tactical green hi-vis (lifted) */
  --amber:        #d4a017;       /* tactical amber */
  --amber-bright: #f0c040;
  --red:          #b03030;
  --line:         #1f2a1e;
  --line-bright:  #2f3f2b;
  --focus:        #f0c040;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Rajdhani', 'Segoe UI', system-ui, sans-serif;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

html { scroll-behavior: smooth; }

a { color: var(--od-bright); text-decoration: none; }
a:hover { color: var(--amber-bright); }

/* ---------- Focus visibility (a11y) ---------- */
:focus { outline: none; }
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  background: var(--amber-bright);
  color: #1a1408;
  padding: 8px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  z-index: 200;
}
.skip-link:focus { top: 8px; }

/* ---------- Background grid + scanline ---------- */
.grid-overlay {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(127, 160, 94, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 160, 94, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}

.scanline {
  position: fixed; inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.012) 0px,
    rgba(255, 255, 255, 0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  z-index: 1;
}

main, header, footer { position: relative; z-index: 2; }

/* ---------- Top bar ---------- */
.topbar {
  border-bottom: 1px solid var(--line-bright);
  background: rgba(10, 13, 10, 0.85);
  backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 50;
}

.classification-bar {
  background: var(--amber);
  color: #1a1408;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3em;
  padding: 4px 8px;
  text-transform: uppercase;
}
.classification-short { display: none; }

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Black Ops One', 'Rajdhani', sans-serif;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }
.brand-mark {
  color: var(--amber-bright);
  font-size: 18px;
}
.brand-divider { color: var(--ink-faint); }
.brand-name {
  color: var(--ink);
  font-size: 14px;
  text-transform: uppercase;
}
.nav {
  display: flex;
  gap: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.nav a { color: var(--ink-dim); transition: color 0.15s ease; }
.nav a:hover { color: var(--amber-bright); }

/* ---------- Mobile nav toggle ---------- */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-bright);
  padding: 10px 12px;
  cursor: pointer;
  width: 44px; height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
body.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.nav-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 28px 100px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 24px;
}
.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.25em;
  padding: 4px 10px;
  border: 1px solid var(--line-bright);
  color: var(--ink-dim);
  text-transform: uppercase;
  background: rgba(20, 26, 20, 0.6);
}
.tag-amber {
  color: var(--amber-bright);
  border-color: var(--amber);
}
h1 {
  font-family: 'Black Ops One', 'Rajdhani', sans-serif;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 0.95;
  margin: 0 0 24px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.hero-line-1 { display: block; color: var(--ink); }
.hero-line-2 { display: block; color: var(--od-bright); }
.hero-sub {
  max-width: 56ch;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.55;
  margin: 0 0 32px;
}
.hero-cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 14px 22px;
  border: 1px solid var(--od-bright);
  display: inline-block;
  transition: all 0.15s ease;
  cursor: pointer;
  text-align: center;
}
.btn-primary {
  background: var(--od-bright);
  color: #0a0d0a;
  font-weight: 700;
}
.btn-primary:hover {
  background: var(--amber-bright);
  border-color: var(--amber-bright);
  color: #0a0d0a;
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--amber-bright);
  color: var(--amber-bright);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-bright);
}
.hero-stats > div { padding: 0; margin: 0; min-width: 0; }
.hero-stats dt {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 6px;
}
.hero-stats dd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.05em;
}
.status-live {
  color: var(--amber-bright);
  position: relative;
  padding-left: 14px;
}
.status-live::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber-bright);
  transform: translateY(-50%);
  box-shadow: 0 0 8px rgba(240, 192, 64, 0.6);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}

/* ---------- Hero frame (right-side target visual) ---------- */
.hero-frame {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line-bright);
  background:
    radial-gradient(circle at center, rgba(127, 160, 94, 0.08), transparent 60%),
    linear-gradient(135deg, var(--bg-2), var(--bg));
  overflow: hidden;
}
.hero-frame-corner {
  position: absolute;
  width: 24px; height: 24px;
  border-color: var(--amber-bright);
  border-style: solid;
  border-width: 0;
}
.hero-frame-corner.tl { top: 10px; left: 10px; border-top-width: 2px; border-left-width: 2px; }
.hero-frame-corner.tr { top: 10px; right: 10px; border-top-width: 2px; border-right-width: 2px; }
.hero-frame-corner.bl { bottom: 10px; left: 10px; border-bottom-width: 2px; border-left-width: 2px; }
.hero-frame-corner.br { bottom: 10px; right: 10px; border-bottom-width: 2px; border-right-width: 2px; }

.hero-frame-readout {
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  display: flex;
  gap: 6px;
  text-transform: uppercase;
}
.hero-frame-readout span:last-child { color: var(--od-bright); font-weight: 700; }
.hero-frame-readout-tl { top: 16px; left: 44px; }
.hero-frame-readout-tr { top: 16px; right: 44px; }
.hero-frame-readout-bl { bottom: 16px; left: 44px; }

.hero-target {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--od-bright);
  opacity: 0.4;
}
.ring.r1 { width: 35%; height: 35%; animation: pulse 3s ease-in-out infinite; }
.ring.r2 { width: 60%; height: 60%; opacity: 0.25; animation: pulse 3s ease-in-out infinite 0.5s; }
.ring.r3 { width: 85%; height: 85%; opacity: 0.15; animation: pulse 3s ease-in-out infinite 1s; }
.crosshair-h, .crosshair-v {
  position: absolute;
  background: var(--od-bright);
  opacity: 0.45;
}
.crosshair-h { width: 95%; height: 1px; top: 50%; left: 2.5%; }
.crosshair-v { width: 1px; height: 95%; left: 50%; top: 2.5%; }

.hero-target-tick {
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
}
.hero-target-tick.t-n { top: 38px; left: 50%; transform: translateX(-50%); }
.hero-target-tick.t-s { bottom: 38px; left: 50%; transform: translateX(-50%); }
.hero-target-tick.t-e { right: 38px; top: 50%; transform: translateY(-50%); }
.hero-target-tick.t-w { left: 38px; top: 50%; transform: translateY(-50%); }

.hero-target-dot {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber-bright);
  box-shadow: 0 0 0 3px rgba(240, 192, 64, 0.18), 0 0 16px rgba(240, 192, 64, 0.5);
  /* Offset slightly from center to suggest a detection */
  top: 38%;
  left: 58%;
  animation: dot-pulse 1.8s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(240, 192, 64, 0.18), 0 0 16px rgba(240, 192, 64, 0.5); }
  50%      { box-shadow: 0 0 0 6px rgba(240, 192, 64, 0.08), 0 0 22px rgba(240, 192, 64, 0.7); }
}

.hero-target-label {
  position: absolute;
  bottom: 28px;
  right: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--amber-bright);
  text-transform: uppercase;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50%      { transform: scale(1.05); opacity: 0.7; }
}
@media (prefers-reduced-motion: reduce) {
  .ring, .hero-target-dot, .status-live::before { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Section base ---------- */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 96px 28px;
  scroll-margin-top: 96px;
}
.section-alt {
  background:
    linear-gradient(180deg, transparent, rgba(127, 160, 94, 0.03), transparent),
    var(--bg-2);
  max-width: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-alt > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 48px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-bright);
}
.section-tag {
  font-family: 'JetBrains Mono', monospace;
  color: var(--amber-bright);
  font-size: 14px;
  letter-spacing: 0.2em;
}
.section-header h2 {
  font-family: 'Black Ops One', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: 0.06em;
  margin: 0;
  color: var(--ink);
  text-transform: uppercase;
}

/* ---------- Mission ---------- */
.mission-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.mission-lead {
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
  max-width: 38ch;
}
.mission-points {
  list-style: none;
  padding: 0; margin: 0;
  display: grid; gap: 14px;
  min-width: 0;
}
.mission-points li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border-left: 2px solid var(--od);
  background: rgba(20, 26, 20, 0.5);
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.55;
}
.mission-point-body { min-width: 0; }
.mission-points strong {
  color: var(--amber-bright);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 6px;
}
.bullet { color: var(--od-bright); font-size: 14px; line-height: 1.55; }

/* ---------- Capabilities ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.cap-card {
  border: 1px solid var(--line-bright);
  background: rgba(15, 19, 16, 0.85);
  padding: 26px;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.cap-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 32px; height: 1px;
  background: var(--amber-bright);
}
.cap-card:hover {
  border-color: var(--od-bright);
  transform: translateY(-2px);
}
.cap-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.cap-id {
  font-family: 'JetBrains Mono', monospace;
  color: var(--amber-bright);
  font-size: 12px;
  letter-spacing: 0.2em;
  flex-shrink: 0;
}
.cap-card h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
  color: var(--ink);
  line-height: 1.25;
}
.cap-card p {
  color: var(--ink-dim);
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
}

/* ---------- Technology ---------- */
.tech-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}
.tech-copy h3 {
  font-family: 'Black Ops One', sans-serif;
  font-size: 28px;
  letter-spacing: 0.04em;
  color: var(--od-bright);
  margin: 0 0 16px;
}
.tech-copy p {
  color: var(--ink-dim);
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 16px;
}
.tech-copy strong { color: var(--amber-bright); font-weight: 700; }

.tech-stack {
  list-style: none;
  margin: 0; padding: 0;
  display: grid; gap: 1px;
  background: var(--line-bright);
  border: 1px solid var(--line-bright);
}
.tech-stack li {
  background: var(--bg-3);
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  padding: 18px 20px;
  gap: 16px;
}
.tech-stack span {
  font-family: 'Black Ops One', sans-serif;
  color: var(--amber-bright);
  font-size: 22px;
}
.tech-stack strong {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 2px;
}
.tech-stack em {
  font-style: normal;
  color: var(--ink-dim);
  font-size: 14px;
}

/* ---------- Contact ---------- */
.contact-card {
  border: 1px solid var(--line-bright);
  background:
    linear-gradient(135deg, rgba(127, 160, 94, 0.06), transparent 60%),
    var(--bg-3);
  padding: 36px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
}
.contact-lines { display: grid; gap: 10px; min-width: 0; }
.contact-line {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-bright);
}
.contact-line:last-child { border-bottom: none; }
.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.contact-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--ink);
  letter-spacing: 0.05em;
  word-break: break-word;
}
.contact-link { color: var(--amber-bright); }
.contact-link:hover { color: var(--od-bright); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line-bright);
  background: var(--bg-2);
  margin-top: 40px;
  padding: 28px 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.footer-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  text-transform: uppercase;
  display: flex; gap: 10px; flex-wrap: wrap;
}
.footer-meta .dot { color: var(--line-bright); }

/* ---------- Responsive: tablet ---------- */
@media (max-width: 1000px) {
  .mission-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .mission-lead { max-width: 60ch; }
  .tech-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- Responsive: small tablet / large phone ---------- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 56px 22px 72px;
    gap: 36px;
  }
  .hero-frame { aspect-ratio: 4 / 3; max-height: 360px; }
  .cap-grid { grid-template-columns: 1fr; }
  .contact-card { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
  .contact-card .btn { width: 100%; }
  .section { padding: 64px 22px; scroll-margin-top: 72px; }
  .topbar-inner { padding: 14px 22px; }

  /* Mobile nav */
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 13, 10, 0.98);
    border-bottom: 1px solid var(--line-bright);
    padding: 8px 0;
  }
  body.nav-open .nav { display: flex; }
  .nav a {
    padding: 14px 22px;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
  }
  .nav a:last-child { border-bottom: none; }

  .classification-bar { letter-spacing: 0.2em; font-size: 10px; }
}

/* ---------- Responsive: phone ---------- */
@media (max-width: 600px) {
  .classification-full { display: none; }
  .classification-short { display: inline; }
  .classification-bar { letter-spacing: 0.25em; }

  .topbar-inner { padding: 12px 18px; gap: 12px; }
  .brand-name { display: none; }
  .brand-divider { display: none; }

  .hero { padding: 40px 18px 56px; gap: 28px; }
  .hero-tags { gap: 6px; }
  .tag { font-size: 9px; padding: 3px 8px; letter-spacing: 0.2em; }
  h1 { font-size: clamp(36px, 11vw, 56px); }
  .hero-sub { font-size: 16px; }
  .hero-cta { gap: 10px; }
  .hero-cta .btn { flex: 1 1 100%; padding: 14px 18px; }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-top: 20px;
  }
  .hero-stats > div {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 14px;
    align-items: baseline;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--line);
  }
  .hero-stats > div:last-child { border-bottom: none; padding-bottom: 0; }
  .hero-stats dt { margin-bottom: 0; min-width: 110px; }

  .hero-frame { max-height: 280px; }
  .hero-frame-readout { font-size: 8px; letter-spacing: 0.15em; }
  .hero-frame-readout-tl { left: 38px; }
  .hero-frame-readout-tr { right: 38px; }
  .hero-frame-readout-bl { left: 38px; bottom: 14px; }
  .hero-target-label { right: 18px; bottom: 18px; font-size: 9px; }

  .section { padding: 48px 18px; }
  .section-header { gap: 12px; margin-bottom: 32px; padding-bottom: 14px; }

  .mission-lead { font-size: 18px; }
  .mission-points li { padding: 14px 16px; font-size: 14.5px; }

  .cap-card { padding: 22px; }
  .cap-card h3 { font-size: 17px; }

  .tech-copy h3 { font-size: 24px; }
  .tech-stack li {
    grid-template-columns: 44px 1fr;
    padding: 14px 16px;
    gap: 12px;
  }
  .tech-stack span { font-size: 18px; }

  .contact-card { padding: 22px 18px; }
  .contact-line { grid-template-columns: 1fr; gap: 4px; padding-bottom: 12px; }
  .contact-label { font-size: 10px; }
  .contact-value { font-size: 13px; }

  .footer-inner { padding: 0 18px; gap: 16px; }
  .footer-meta { gap: 8px; font-size: 10px; letter-spacing: 0.15em; }
}