:root {
  --bg: #050505;
  --surface: rgba(14, 14, 14, .78);
  --text: #f5f5f5;
  --muted: #a3a3a3;
  --dim: #737373;
  --accent: #38bdf8;
  --accent-dim: rgba(56, 189, 248, .12);
  --accent-glow: rgba(56, 189, 248, .25);
  --border: rgba(255, 255, 255, .10);
  --blue: #2dd4bf;
  --sans: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font-family: var(--sans); line-height: 1.6; -webkit-font-smoothing: antialiased;
  overflow-x: hidden; position: relative;
}
img { max-width: 100%; }
a { color: inherit; }

/* ---------- ambient background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(700px 500px at 85% 8%, var(--accent-glow), transparent 70%),
    radial-gradient(600px 500px at 5% 60%, rgba(80, 40, 255, .10), transparent 70%),
    var(--bg);
  animation: drift 24s ease-in-out infinite alternate;
}
.bg::after { content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px; opacity: .25;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 75%);
}
@keyframes drift { to { background-position: -60px 40px, 40px -30px, 0 0; } }

/* ---------- nav ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 60; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px max(16px, calc((100vw - 1100px) / 2)); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 5, 5, .55); border-bottom: 1px solid var(--border); }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--mono); font-size: 14px; }
.logo-mark { background: var(--accent); color: #031018; font-weight: 700; padding: 3px 7px; border-radius: 4px; }
.nav-links { display: flex; gap: 26px; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.lang { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.lang button { background: transparent; border: 0; color: var(--muted); font: 600 12px var(--mono); padding: 6px 10px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--accent); color: #031018; }

/* ---------- layout ---------- */
main { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.section { padding: 90px 0 30px; }
.label { font: 500 12px var(--mono); letter-spacing: .12em; color: var(--accent); margin: 0 0 10px; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.02em; }
h2 { font-size: clamp(30px, 5vw, 46px); font-weight: 800; }
.sec-head { margin-bottom: 36px; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .8fr); gap: 48px; align-items: center; min-height: min(100vh, 860px); min-height: min(100svh, 860px); padding: 110px 0 40px; }
.eyebrow { display: inline-block; font: 500 13px var(--mono); color: var(--accent); background: var(--accent-dim);
  border: 1px solid rgba(56, 189, 248, .3); padding: 6px 12px; border-radius: 999px; margin: 0 0 22px; }
h1 { font-size: clamp(48px, 9vw, 104px); font-weight: 800; }
.sub { color: var(--muted); font-size: clamp(16px, 2vw, 19px); max-width: 54ch; margin: 22px 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; text-decoration: none; font: 600 14px var(--sans); padding: 13px 22px; border-radius: 10px;
  border: 1px solid var(--border); transition: transform .2s var(--ease), background .2s, border-color .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #031018; box-shadow: 0 8px 28px var(--accent-glow); }
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-dim); }
.stats { display: flex; flex-wrap: wrap; gap: 30px; margin-top: 40px; }
.stats b { display: block; font: 700 24px var(--mono); color: var(--accent); }
.stats span { font-size: 12px; color: var(--dim); }

.photo { justify-self: center; width: min(100%, 340px); }
.ph { position: relative; aspect-ratio: 720 / 827; border-radius: 18px; border: 1px solid var(--border);
  background: linear-gradient(160deg, #07151d, #0a0a0a 60%); display: grid; place-items: center; overflow: hidden;
  box-shadow: 0 0 60px var(--accent-glow); }
.ph::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, var(--accent) 0, transparent 30%); opacity: .35; }
.ph-initials { position: relative; font: 800 96px var(--sans); color: rgba(255, 255, 255, .9); }
.ph small { position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; color: var(--dim); font: 400 12px var(--mono); }
.ph-tag { z-index: 2; text-shadow: 0 1px 6px rgba(0, 0, 0, .8); position: absolute; top: 14px; left: 14px; font: 500 10px var(--mono); color: var(--accent); font-style: normal; letter-spacing: .1em; }
.ph img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 15%; }
.ph::after { content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 5, 5, .45), transparent 22%, transparent 72%, rgba(5, 5, 5, .45)); }

/* ---------- project gallery (hero visual) ---------- */
.gallery { position: relative; aspect-ratio: 340 / 400; border: 1px solid var(--border); border-radius: 18px; overflow: hidden;
  background: linear-gradient(160deg, #07151d, #0a0a0a 60%); box-shadow: 0 0 60px var(--accent-glow); touch-action: pan-y; user-select: none; }
.gallery::before { content: ''; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 28px 28px; }
.slide { position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity .7s ease; pointer-events: none; }
.slide.is-active { opacity: 1; }
.slide svg { display: block; width: 100%; height: 100%; padding: 30px 14px 46px; }
.slide figcaption { position: absolute; left: 16px; bottom: 14px; font: 500 11px var(--mono); color: var(--muted); letter-spacing: .04em; }
.gs text { font: 500 10px var(--mono); fill: #d7e3ee; }
.gs .t-big { font-size: 15px; font-weight: 700; fill: #fff; }
.gs .t-sub { font-size: 9px; fill: var(--muted); }
.gs .n { fill: rgba(56, 189, 248, .08); stroke: rgba(56, 189, 248, .55); stroke-width: 1; }
.gs .n-big { fill: rgba(56, 189, 248, .14); stroke: var(--accent); }
.gs .n-alt { fill: rgba(45, 212, 191, .10); stroke: rgba(45, 212, 191, .7); }
.gs .port { fill: var(--bg); stroke: var(--accent); stroke-width: 1.5; }
.gs .ln { fill: none; stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 4 4; animation: dash 1.1s linear infinite; opacity: .85; }
.gs .tile { fill: rgba(255, 255, 255, .03); stroke: var(--border); }
.gs .tile.on { fill: rgba(56, 189, 248, .12); stroke: var(--accent); }
.gs .knob { fill: rgba(255, 255, 255, .08); stroke: var(--dim); stroke-width: 1.5; }
.gs .knob.on { fill: var(--accent); stroke: #fff; filter: drop-shadow(0 0 8px var(--accent)); }
.gs .spark { fill: none; stroke: var(--blue); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.gs .wifi path { fill: none; stroke: var(--blue); stroke-width: 2; stroke-linecap: round; animation: pulse 1.8s ease-in-out infinite; }
.gs .wifi path:nth-child(2) { animation-delay: .25s; } .gs .wifi path:nth-child(3) { animation-delay: .5s; }
.gs .pins path { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; opacity: .7; }
@keyframes dash { to { stroke-dashoffset: -16; } }
@keyframes pulse { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }
.g-dots { position: absolute; right: 8px; bottom: 6px; display: flex; }
.g-dots button { width: 30px; height: 30px; background: none; border: 0; cursor: pointer; display: grid; place-items: center; }
.g-dots button::after { content: ''; width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 255, 255, .25); transition: background .3s, transform .3s; }
.g-dots button[aria-current="true"]::after { background: var(--accent); transform: scale(1.3); }

/* ---------- about ---------- */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.about-text p { margin: 0 0 16px; color: var(--muted); font-size: 17px; }
.about-text p:first-child { color: var(--text); font-size: 20px; }
.facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.facts li { padding: 14px 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.facts small { display: block; font: 400 11px var(--mono); color: var(--accent); text-transform: uppercase; letter-spacing: .1em; }
.facts b { font-size: 17px; }

/* ---------- cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card { padding: 24px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface);
  transition: border-color .25s, transform .25s var(--ease), box-shadow .25s; }
.card:hover { border-color: rgba(56, 189, 248, .5); transform: translateY(-4px); box-shadow: 0 14px 40px rgba(0, 0, 0, .5), 0 0 30px var(--accent-dim); }
.tag { font: 500 11px var(--mono); letter-spacing: .12em; color: var(--accent); margin: 0 0 12px; }
.card h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.card p:not(.tag) { color: var(--muted); font-size: 15px; margin: 0 0 16px; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font: 400 11px var(--mono); color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 3px 9px; }

/* ---------- contact / footer ---------- */
.contact { padding-bottom: 80px; }
.contact-box { text-align: center; padding: 60px 24px; border: 1px solid var(--border); border-radius: 22px;
  background: radial-gradient(500px 220px at 50% 0, var(--accent-dim), transparent 70%), var(--surface); }
.contact-box .sub { margin-left: auto; margin-right: auto; }
.contact-box .cta { justify-content: center; }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; max-width: 1100px; margin: 0 auto;
  padding: 24px 16px 90px; color: var(--dim); font: 400 12px var(--mono); border-top: 1px solid var(--border); }

/* ---------- build effect ---------- */
.pre-build [data-b] { opacity: 0; clip-path: inset(0 100% 0 0); }
.pre-build [data-b].is-built { opacity: 1; clip-path: inset(-20px -20px -20px -20px);
  transition: opacity .35s ease, clip-path .6s var(--ease); }
.pre-build .nav { opacity: 0; transform: translateY(-100%); }
.nav { transition: opacity .6s ease, transform .6s var(--ease); }
.nav.show, html:not(.pre-build) .nav { opacity: 1; transform: none; }

#swarm { position: absolute; top: 0; left: 0; width: 100%; height: 0; z-index: 55; pointer-events: none; overflow: hidden; }
.bp { position: absolute; border: 1px solid var(--blue); background: rgba(45, 212, 191, .10); width: 0; height: 0; }
.bp.fade { opacity: 0; transition: opacity .35s; }
.bp i { position: absolute; left: 50%; bottom: -22px; transform: translateX(-50%); font: 500 10px var(--mono); font-style: normal;
  color: #031018; background: var(--blue); padding: 1px 6px; border-radius: 3px; white-space: nowrap; }
.bp::before, .bp::after { content: ''; position: absolute; width: 6px; height: 6px; background: #fff; border: 1px solid var(--blue); }
.bp::before { left: -4px; top: -4px; } .bp::after { right: -4px; bottom: -4px; }
/* drones */
.cur { position: absolute; left: 0; top: 0; will-change: transform; }
.drone { position: relative; width: 34px; margin: -17px 0 0 -17px; transition: transform .5s ease; animation: bob 1.6s ease-in-out infinite alternate; }
.drone svg { display: block; width: 34px; height: 34px; filter: drop-shadow(0 6px 5px rgba(0, 0, 0, .55)); }
.drone .rotors ellipse { transform-box: fill-box; transform-origin: center; animation: prop .14s linear infinite; }
.drone span { position: absolute; left: 50%; top: 36px; transform: translateX(-50%); color: #031018; font: 600 10px var(--sans);
  padding: 2px 8px; border-radius: 999px; white-space: nowrap; box-shadow: 0 2px 8px rgba(0, 0, 0, .4); }
.drone .led { animation: blink 1s steps(2) infinite; }
@keyframes bob { from { margin-top: -19px; } to { margin-top: -15px; } }
@keyframes prop { to { transform: rotate(360deg); } }
@keyframes blink { 50% { opacity: .2; } }

#hud { position: fixed; left: 50%; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); z-index: 70; display: flex; align-items: center; gap: 12px;
  padding: 8px 10px 8px 14px; border-radius: 999px; background: rgba(12, 12, 12, .88); border: 1px solid var(--border);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); font: 500 12px var(--mono); color: var(--muted); max-width: calc(100vw - 24px); }
#hud[hidden] { display: none; }
#hud span { white-space: nowrap; }
#hud .dots { display: flex; }
#hud .dots i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid #0c0c0c; margin-left: -5px; }
#hud .dots i:first-child { margin-left: 0; }
#hud .bar { width: 90px; height: 4px; border-radius: 4px; background: rgba(255, 255, 255, .12); overflow: hidden; }
#hud .bar b { display: block; height: 100%; width: 0; background: var(--blue); transition: width .2s linear; }
#hud button { font: 600 11px var(--mono); border: 0; border-radius: 999px; padding: 6px 12px; cursor: pointer; background: var(--blue); color: #031018; }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .hero { grid-template-columns: minmax(0, 1fr); min-height: 0; gap: 32px; padding-top: 96px; }
  .photo { width: 100%; max-width: 420px; justify-self: start; }
  .about { grid-template-columns: minmax(0, 1fr); }
  .nav { gap: 10px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 13px; padding: 10px 0; }
  .section { padding-top: 64px; }
  #hud .bar { width: 56px; }
}
@media (max-width: 560px) {
  .logo-text { display: none; }
  .nav-links { margin-left: auto; }
  .lang button { padding: 9px 12px; }
  .btn { padding: 14px 20px; }
  .cta .btn { flex: 1 1 auto; text-align: center; }
  .stats { gap: 22px; }
  .card { padding: 20px; }
  .contact-box { padding: 40px 18px; }
  .contact-box .btn { width: 100%; word-break: break-all; }
  .drone, .drone svg { width: 28px; height: 28px; }
  .drone { margin: -14px 0 0 -14px; }
  .drone span { top: 30px; font-size: 9px; }
  #hud { font-size: 11px; gap: 8px; padding-left: 12px; }
  .stats { display: grid; grid-template-columns: repeat(3, auto); justify-content: space-between; gap: 12px; }
  .stats b { font-size: 19px; }
  .stats span { font-size: 11px; display: block; }
  #hud .bar { display: none; }
  #hud button { padding: 8px 14px; }
}
@media (hover: none) {
  .card:hover { transform: none; box-shadow: none; border-color: var(--border); }
  .btn:hover { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bg { animation: none; }
}