/* ========== GeoTAK — design tokens ========== */
:root {
  --bg-0: #06080c;
  --bg-1: #0a0e15;
  --bg-2: #0f141d;
  --panel: #11171f;
  --panel-2: #161d28;
  --line: rgba(148, 175, 210, 0.10);
  --line-strong: rgba(148, 175, 210, 0.18);
  --ink-0: #f1f5fb;
  --ink-1: #cbd5e1;
  --ink-2: #94a3b8;
  --ink-3: #64748b;

  --accent: oklch(0.82 0.16 70);           /* amber */
  --accent-soft: oklch(0.82 0.16 70 / 0.14);
  --accent-line: oklch(0.82 0.16 70 / 0.42);
  --tac: oklch(0.80 0.16 162);             /* tactical green */
  --tac-soft: oklch(0.80 0.16 162 / 0.14);
  --warn: oklch(0.82 0.16 70);             /* amber */
  --alert: oklch(0.72 0.20 26);            /* red */

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 18px;
  --r-xl: 24px;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg-0); }
body {
  font-family: var(--font-body);
  color: var(--ink-1);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(34, 211, 238, 0.07), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(94, 234, 212, 0.04), transparent 60%),
    var(--bg-0);
  background-attachment: fixed;
  overflow-x: hidden;
}

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .wrap { padding: 0 20px; } }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink-0);
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }

.mono { font-family: var(--font-mono); font-feature-settings: "ss01" 1; }

/* ========== Grid backdrop ========== */
.grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 175, 210, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 175, 210, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, #000 35%, transparent 80%);
}

/* ========== Eyebrow / tag ========== */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-2);
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.015);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 999px; background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 14px;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 180ms ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(180deg, oklch(0.86 0.14 200), oklch(0.74 0.14 200));
  color: #04121a;
  box-shadow: 0 0 0 1px oklch(0.55 0.12 200 / 0.55), 0 10px 30px -10px oklch(0.82 0.14 200 / 0.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px oklch(0.55 0.12 200 / 0.7), 0 14px 40px -10px oklch(0.82 0.14 200 / 0.7); }
.btn-ghost {
  background: rgba(255,255,255,0.02);
  color: var(--ink-0);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); border-color: var(--accent-line); color: var(--ink-0); }

.btn .arrow { transition: transform 180ms ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ========== Cards ========== */
.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
}
.card.hov:hover { border-color: var(--accent-line); }
.card.hov { transition: border-color 200ms ease, transform 200ms ease; }

.card .corner {
  position: absolute; width: 14px; height: 14px;
  border-color: var(--accent);
  opacity: 0.55;
}
.card .corner.tl { top: 8px; left: 8px; border-top: 1px solid; border-left: 1px solid; }
.card .corner.tr { top: 8px; right: 8px; border-top: 1px solid; border-right: 1px solid; }
.card .corner.bl { bottom: 8px; left: 8px; border-bottom: 1px solid; border-left: 1px solid; }
.card .corner.br { bottom: 8px; right: 8px; border-bottom: 1px solid; border-right: 1px solid; }

/* ========== Section header ========== */
.sec {
  position: relative;
  padding: 110px 0;
}
.sec-head { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: end; margin-bottom: 56px; }
@media (max-width: 900px) { .sec-head { grid-template-columns: 1fr; gap: 24px; } .sec { padding: 80px 0; } }
.sec-head h2 { font-size: clamp(28px, 3.6vw, 44px); line-height: 1.08; font-weight: 500; }
.sec-head p { color: var(--ink-2); max-width: 480px; }

/* ========== Utilities ========== */
.hairline { height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong), transparent); }
.dim { color: var(--ink-2); }
.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink-2);
  background: rgba(255,255,255,0.02);
}

/* ========== Animations ========== */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}
@keyframes radar-sweep {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes dash {
  to { stroke-dashoffset: -200; }
}
@keyframes float-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scan {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.fade-in { animation: float-up 600ms ease both; }

/* ========== Reveal on scroll ========== */
[data-reveal] {
  opacity: 0;
  transition: opacity 700ms ease;
}