/* ============================================================
   STRATASIM DESIGNS - studio site.
   Same EFIS design family as the products: charcoal canvas, one
   cyan phosphor accent, the flight-rules palette, hard instrument
   edges (no SaaS cards, no pills). The "strata" mark, at scale.
   Type: Bricolage Grotesque (display) / Geist (body) / JetBrains Mono.
   ============================================================ */

:root {
  --bg:#03070c; --bg-2:#060b14; --panel:#0a121e; --panel-2:#0d1726;
  --line:#16202f; --line-2:#233448; --bezel:rgba(120,150,170,0.18); --bezel-2:rgba(150,190,210,0.40);
  --ink:#e8f1ff; --text:#aebccd; --muted:#5f7187;
  --cyan:#34e7ff; --cyan-deep:#1f9bd6;
  --vfr:#38e08a; --mvfr:#ffb020; --ifr:#ff4d5e; --lifr:#e879f9;

  --font-display:'Bricolage Grotesque', system-ui, sans-serif;
  --font-body:'Geist', system-ui, sans-serif;
  --font-mono:'JetBrains Mono', ui-monospace, monospace;

  --maxw:1180px;
  --pad:clamp(20px, 5vw, 64px);
  --ease:cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior:auto; } *,*::before,*::after { animation:none !important; } }

body {
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--font-body); font-size:17px; line-height:1.62;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-x:hidden;
}
h1,h2,h3 { font-family:var(--font-display); font-weight:600; line-height:1.05; letter-spacing:-0.02em; margin:0; color:var(--ink); }
p { margin:0; }
a { color:inherit; text-decoration:none; }
ul { margin:0; padding:0; list-style:none; }
i,em { font-style:normal; }
b { font-weight:inherit; }
svg { display:block; }
::selection { background:rgba(52,231,255,0.26); color:#fff; }

a:focus-visible, button:focus-visible {
  outline:2px solid var(--cyan); outline-offset:3px; border-radius:1px;
}

.lit { color:var(--cyan); }
.readout { font-family:var(--font-mono); font-size:11px; letter-spacing:0.26em; text-transform:uppercase; color:var(--muted); }

/* faint scope graticule, the whole-page wash */
.field {
  position:fixed; inset:0; z-index:-2; pointer-events:none;
  background:
    radial-gradient(48% 42% at 14% 4%, rgba(52,231,255,0.08), transparent 70%),
    radial-gradient(52% 46% at 92% 100%, rgba(103,232,249,0.06), transparent 72%),
    var(--bg);
}
.field::after {
  content:''; position:absolute; inset:0; opacity:0.035;
  background:
    linear-gradient(to right, var(--cyan) 1px, transparent 1px),
    linear-gradient(to bottom, var(--cyan) 1px, transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 70% 30%, #000 6%, transparent 78%);
  mask-image:radial-gradient(circle at 70% 30%, #000 6%, transparent 78%);
}

/* ============ NAV ============ */
.nav { position:fixed; inset:0 0 auto 0; z-index:60; display:flex; align-items:center; gap:24px;
  padding:14px var(--pad); border-bottom:1px solid transparent;
  transition:background 0.3s, border-color 0.3s, padding 0.3s; }
.nav.scrolled { background:rgba(3,7,12,0.86); backdrop-filter:blur(14px); border-bottom-color:var(--line); padding-top:10px; padding-bottom:10px; }
.nav__brand { display:flex; align-items:center; gap:11px; }
.mark { width:30px; height:36px; filter:drop-shadow(0 0 10px rgba(52,231,255,0.22)); }
.mark--sm { width:24px; height:29px; }
.nav__word { font-family:var(--font-display); font-weight:600; font-size:20px; letter-spacing:-0.02em; color:var(--ink); }
.nav__word i { color:var(--cyan); }
.nav__word em { color:var(--muted); font-weight:500; }
.nav__links { display:flex; gap:30px; margin-left:auto; }
.nav__links a { font-family:var(--font-mono); font-size:11.5px; letter-spacing:0.14em; text-transform:uppercase; color:var(--text); position:relative; transition:color 0.2s; }
.nav__links a::after { content:''; position:absolute; left:0; right:0; bottom:-7px; height:1.5px; background:var(--cyan); box-shadow:0 0 8px var(--cyan); transform:scaleX(0); transform-origin:left; transition:transform 0.25s var(--ease); }
.nav__links a:hover { color:var(--ink); }
.nav__links a:hover::after { transform:scaleX(1); }
.nav__actions { display:flex; align-items:center; }
.nav__burger { display:none; flex-direction:column; gap:5px; width:42px; height:36px; align-items:center; justify-content:center; background:rgba(52,231,255,0.04); border:1px solid var(--line-2); cursor:pointer; }
.nav__burger span { width:18px; height:2px; background:var(--ink); transition:0.25s; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity:0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

.mobile-menu { position:fixed; top:60px; inset-inline:0; z-index:59; display:flex; flex-direction:column; gap:2px; padding:14px var(--pad) 22px; background:rgba(3,7,12,0.97); backdrop-filter:blur(14px); border-bottom:1px solid var(--line); }
.mobile-menu[hidden] { display:none; }
.mobile-menu a { padding:14px 4px; font-family:var(--font-mono); font-size:12px; letter-spacing:0.12em; text-transform:uppercase; color:var(--text); border-bottom:1px solid var(--line); }
.mobile-menu .waypoint { margin-top:14px; border-bottom:none; justify-content:center; }

/* ============ WAYPOINT (CTA, a destination fix, never a pill) ============ */
.waypoint { position:relative; display:inline-flex; align-items:center; gap:9px; font-family:var(--font-mono); font-weight:600;
  font-size:12px; letter-spacing:0.16em; text-transform:uppercase; color:var(--cyan);
  padding:11px 18px; border:1px solid var(--cyan-deep); background:rgba(52,231,255,0.06); cursor:pointer; white-space:nowrap;
  transition:color 0.2s, border-color 0.2s, background 0.2s, box-shadow 0.25s; }
.waypoint b { font-size:13px; line-height:1; }
.waypoint::before, .waypoint::after { content:''; position:absolute; width:9px; height:9px; border:1.5px solid var(--cyan); opacity:0; transition:opacity 0.16s, transform 0.16s; }
.waypoint::before { top:-1px; left:-1px; border-right:0; border-bottom:0; transform:translate(-4px,-4px); }
.waypoint::after { bottom:-1px; right:-1px; border-left:0; border-top:0; transform:translate(4px,4px); }
.waypoint:hover, .waypoint:focus-visible { color:#eafdff; border-color:var(--cyan); background:rgba(52,231,255,0.12); box-shadow:0 0 26px -8px rgba(52,231,255,0.7); }
.waypoint:hover::before, .waypoint:focus-visible::before, .waypoint:hover::after, .waypoint:focus-visible::after { opacity:1; transform:translate(0,0); }
.waypoint--lg { font-size:13.5px; padding:15px 26px; letter-spacing:0.18em; }
.waypoint--sm { font-size:10.5px; padding:9px 14px; }
.waypoint--solid { color:var(--bg); background:var(--cyan); border-color:var(--cyan); }
.waypoint--solid:hover, .waypoint--solid:focus-visible { color:var(--bg); background:#6cefff; border-color:#6cefff; box-shadow:0 0 30px -6px rgba(52,231,255,0.55); }

.ghostlink { font-family:var(--font-mono); font-size:12px; letter-spacing:0.16em; text-transform:uppercase; color:var(--text); padding:11px 4px; border-bottom:1px solid transparent; transition:color 0.2s, border-color 0.2s; }
a.ghostlink:hover { color:var(--cyan); border-bottom-color:var(--cyan); }
.ghostlink--static { color:var(--muted); cursor:default; }

/* ============ SHELLS ============ */
.section { position:relative; z-index:1; max-width:var(--maxw); margin:0 auto; padding:clamp(48px,7vw,84px) var(--pad); }
.lead__sub { color:var(--text); font-size:clamp(16px,2vw,19px); max-width:620px; margin:0 0 clamp(34px,5vw,48px); }

/* bearing-line divider, replaces every centered header */
.bearing { position:relative; z-index:1; display:flex; align-items:center; gap:clamp(14px,3vw,40px); max-width:var(--maxw);
  margin:clamp(28px,5vw,56px) auto 0; padding:0 var(--pad); }
.bearing::before, .bearing::after { content:''; flex:1; height:1px; background:linear-gradient(90deg, transparent, var(--line-2)); }
.bearing::after { background:linear-gradient(90deg, var(--line-2), transparent); }
.bearing span { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.24em; text-transform:uppercase; color:var(--muted); white-space:nowrap; }
.bearing b { font-family:var(--font-display); font-weight:600; font-size:clamp(17px,2.4vw,24px); color:var(--ink); letter-spacing:-0.01em; white-space:nowrap; }

/* ============ HERO ============ */
.hero { position:relative; isolation:isolate; padding-top:clamp(96px,13vh,148px); }
.hero__inner { display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,0.95fr); gap:clamp(28px,5vw,72px); align-items:center;
  padding-top:clamp(20px,4vh,48px); padding-bottom:clamp(40px,6vh,72px); }
.hero__copy { min-width:0; max-width:600px; }
.hero__copy .readout { display:block; margin-bottom:18px; padding-left:14px; border-left:2px solid var(--cyan); }
.hero__title { font-size:clamp(40px,5.6vw,70px); font-weight:600; letter-spacing:-0.03em; line-height:0.99; margin:0; }
.hero__title .lit { text-shadow:none; }
.hero__sub { color:var(--text); font-size:clamp(16px,1.7vw,19px); max-width:520px; margin:clamp(20px,3vw,28px) 0 clamp(28px,4vw,38px); }
.hero__cta { display:flex; align-items:center; gap:20px; flex-wrap:wrap; }

/* the strata: layered atmosphere bars (the mark, exploded) */
.strata { position:relative; display:flex; flex-direction:column; gap:clamp(10px,1.5vw,16px); padding:clamp(20px,3vw,34px);
  border:1px solid var(--bezel); background:linear-gradient(180deg, rgba(10,18,30,0.5), rgba(3,7,12,0.5)); overflow:hidden; }
.strata::before { content:'ATMOSPHERIC PROFILE'; position:absolute; top:12px; right:14px; font-family:var(--font-mono); font-size:9px; letter-spacing:0.24em; color:var(--muted); }
.strata span { display:block; height:clamp(12px,1.6vw,18px); width:var(--w); border-radius:9px; background:var(--c);
  box-shadow:0 0 16px -4px var(--c); opacity:0.92; transform-origin:left; animation:grow 1s var(--ease) both; }
.strata span:nth-child(2){animation-delay:.04s} .strata span:nth-child(3){animation-delay:.08s}
.strata span:nth-child(4){animation-delay:.12s} .strata span:nth-child(5){animation-delay:.16s}
.strata span:nth-child(6){animation-delay:.20s} .strata span:nth-child(7){animation-delay:.24s}
.strata span:nth-child(8){animation-delay:.28s} .strata span:nth-child(9){animation-delay:.32s}
@keyframes grow { from { transform:scaleX(0); opacity:0; } to { transform:scaleX(1); opacity:0.92; } }
.strata__scan { position:absolute; left:0; right:0; top:0; height:32%; pointer-events:none;
  background:linear-gradient(180deg, rgba(52,231,255,0.10), transparent); animation:scan 6s linear infinite; }
@keyframes scan { 0%{transform:translateY(-40%)} 100%{transform:translateY(330%)} }

/* ============ PRODUCTS ============ */
.rack { display:grid; grid-template-columns:repeat(auto-fit, minmax(290px,1fr)); gap:1px; background:var(--line); border:1px solid var(--line); }
.prod { background:var(--panel); padding:clamp(24px,3vw,34px); display:flex; flex-direction:column; min-height:340px;
  transition:background 0.25s; }
.prod:hover { background:var(--panel-2); }
.prod--live { box-shadow:inset 3px 0 0 var(--cyan-deep); }
.prod--ghost { background:var(--bg-2); }
.prod__head { display:flex; align-items:center; gap:9px; margin-bottom:18px; }
.prod__status { font-family:var(--font-mono); font-size:10px; letter-spacing:0.2em; text-transform:uppercase; color:var(--muted); }
.led { width:9px; height:9px; border-radius:2px; background:var(--muted); flex:none; }
.led--vfr { background:var(--vfr); box-shadow:0 0 9px var(--vfr); }
.led--mvfr { background:var(--mvfr); box-shadow:0 0 9px var(--mvfr); }
.prod__name { font-size:clamp(24px,2.6vw,30px); margin-bottom:6px; }
.prod__tag { color:#bcd0df; font-size:14.5px; font-weight:500; margin-bottom:14px; }
.prod__desc { color:var(--text); font-size:14.5px; line-height:1.62; }
.prod__foot { margin-top:auto; padding-top:22px; display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap; }
.prod__meta { font-family:var(--font-mono); font-size:10px; letter-spacing:0.12em; text-transform:uppercase; color:var(--muted); }

/* ============ STUDIO ============ */
.studio__grid { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:clamp(32px,5vw,72px); align-items:start; }
.studio__title { font-size:clamp(28px,3.6vw,42px); letter-spacing:-0.02em; }
.studio__body { color:var(--text); font-size:clamp(16px,1.7vw,18px); margin-top:20px; max-width:460px; }
.tenets { display:flex; flex-direction:column; }
.tenets li { display:flex; gap:18px; padding:20px 0; border-top:1px solid var(--line); color:var(--text); font-size:15.5px; line-height:1.55; }
.tenets li:last-child { border-bottom:1px solid var(--line); }
.tenets b { color:var(--ink); font-weight:600; }
.tenets__k { font-family:var(--font-mono); font-size:12px; letter-spacing:0.1em; color:var(--cyan); padding-top:2px; flex:none; }

/* ============ CONTACT ============ */
.contact__inner { max-width:680px; }
.contact__title { font-size:clamp(32px,4.4vw,52px); letter-spacing:-0.02em; }
.contact__body { color:var(--text); font-size:clamp(16px,1.8vw,19px); margin:18px 0 28px; max-width:540px; }
.contact__mail { display:inline-block; font-family:var(--font-display); font-weight:600; font-size:clamp(22px,3.4vw,34px); color:var(--cyan); letter-spacing:-0.01em;
  border-bottom:1px solid var(--line-2); padding-bottom:4px; transition:border-color 0.2s, text-shadow 0.2s; }
.contact__mail:hover { border-bottom-color:var(--cyan); text-shadow:0 0 18px rgba(52,231,255,0.4); }
.contact__alt { margin-top:26px; }

/* ============ FOOTER ============ */
.foot { border-top:1px solid var(--line); margin-top:clamp(40px,6vw,72px); }
.foot__inner { display:flex; align-items:center; gap:24px; flex-wrap:wrap; padding-top:30px; padding-bottom:30px; }
.foot__brand { display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:600; font-size:16px; color:var(--ink); }
.foot__brand i { color:var(--cyan); }
.foot__links { display:flex; gap:24px; margin-left:auto; flex-wrap:wrap; }
.foot__links a { font-family:var(--font-mono); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--text); transition:color 0.2s; }
.foot__links a:hover { color:var(--cyan); }
.foot__legal { width:100%; font-family:var(--font-mono); font-size:10px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); padding-top:18px; border-top:1px solid var(--line); margin-top:6px; }

/* ============ RESPONSIVE ============ */
@media (max-width:920px) {
  .hero__inner { grid-template-columns:1fr; }
  .strata { order:-1; }
  .studio__grid { grid-template-columns:1fr; }
}
@media (max-width:760px) {
  .nav__links, .nav__actions { display:none; }
  .nav__burger { display:flex; }
}