/* ==========================================================================
   ZENTECH TECHNOLOGIES — STYLESHEET
   Dark, premium, aerospace / defense / deep-tech aesthetic.
   ========================================================================== */

/* ---------- 1. TOKENS ---------- */
:root{
  --bg:            #05070c;
  --bg-alt:        #080c15;
  --surface:       #0c111c;
  --surface-2:     #101828;
  --border:        rgba(160, 190, 230, 0.10);
  --border-strong: rgba(120, 180, 255, 0.30);

  --accent:        #2f7dff;
  --accent-soft:   rgba(47, 125, 255, 0.14);
  --cyan:          #45e6d8;
  --cyan-soft:     rgba(69, 230, 216, 0.12);
  --green:         #3ddc97;

  --text:          #eef3fb;
  --text-dim:      #9aa8bd;
  --text-dimmer:   #647089;

  --font-head: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --radius: 10px;
  --radius-lg: 16px;
  --container: 1200px;

  --ease: cubic-bezier(.16,.8,.24,1);
  --dur-fast: .25s;
  --dur: .5s;
  --dur-slow: .9s;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: 84px; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select{ font: inherit; color: inherit; }
h1,h2,h3,h4{ font-family: var(--font-head); margin: 0; font-weight: 600; letter-spacing: -0.01em; }
p{ margin: 0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior:auto !important; }
}

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--accent); color:#fff;
  padding:.75rem 1.25rem; z-index:999; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

:focus-visible{ outline: 2px solid var(--cyan); outline-offset: 3px; }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

/* subtle base grid texture across whole page */
body::before{
  content:"";
  position: fixed; inset:0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: .6em;
}
.eyebrow::before{
  content:"";
  width: 22px; height: 1px;
  background: var(--cyan);
  display:inline-block;
}

.section{
  position: relative;
  padding: clamp(4.5rem, 9vw, 8rem) 0;
  z-index: 1;
}
.section__title{
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.1;
  margin-bottom: 2.5rem;
  text-transform: uppercase;
}

/* reveal-on-scroll */
[data-reveal]{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
[data-reveal].is-visible{ opacity: 1; transform: translateY(0); }

/* ---------- 3. BUTTONS ---------- */
.btn{
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: 0.95rem 1.9rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  will-change: transform;
}
.btn--primary{
  background: linear-gradient(135deg, var(--accent), #1e5fd0);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset, 0 8px 30px -8px rgba(47,125,255,0.65);
}
.btn--primary:hover{ box-shadow: 0 0 0 1px rgba(255,255,255,0.12) inset, 0 10px 40px -6px rgba(47,125,255,0.85); }
.btn--ghost{
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: rgba(255,255,255,0.02);
}
.btn--ghost:hover{ background: rgba(69,230,216,0.06); border-color: var(--cyan); }
.btn--full{ width: 100%; }

/* magnetic buttons handled via JS transform on mousemove */
.magnetic{ transition: transform .18s var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease); }

/* ---------- 4. NAVBAR ---------- */
.navbar{
  position: fixed; top:0; left:0; right:0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background var(--dur-fast) var(--ease), backdrop-filter var(--dur-fast) var(--ease), padding var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.is-scrolled{
  padding: 0.7rem 0;
  background: rgba(5, 7, 12, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.navbar__inner{ display:flex; align-items:center; justify-content:space-between; gap: 1.5rem; }
.navbar__brand{ display:flex; align-items:center; gap:.7rem; }
.navbar__mark{ color: var(--cyan); display:inline-flex; align-items:center; filter: drop-shadow(0 0 8px rgba(69,230,216,0.35)); }
.navbar__mark img{ height: 28px; width: auto; display:block; }
.navbar__name{
  font-family: var(--font-head); font-weight:700; letter-spacing:0.06em; font-size: 1rem;
  display:flex; flex-direction:column; line-height:1.1;
}
.navbar__name-sub{ font-family: var(--font-mono); font-weight:400; font-size:0.58rem; letter-spacing:0.32em; color: var(--text-dimmer); }
.navbar__list{ display:flex; align-items:center; gap: 2.1rem; }
.navbar__list a{
  font-family: var(--font-mono); font-size:0.8rem; letter-spacing:0.04em; color: var(--text-dim);
  position:relative; padding: .3rem 0; transition: color var(--dur-fast);
}
.navbar__list a::after{
  content:""; position:absolute; left:0; bottom:-2px; width:0; height:1px; background: var(--cyan);
  transition: width var(--dur-fast) var(--ease);
}
.navbar__list a:hover{ color: var(--text); }
.navbar__list a:hover::after{ width:100%; }

.navbar__toggle{
  display:none; flex-direction:column; gap:5px; width:26px; padding: .5rem;
  position: relative; z-index: 95;
}
.navbar__toggle span{ width:100%; height:1.5px; background: var(--text); transition: transform var(--dur-fast), opacity var(--dur-fast); }
.navbar__toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
.navbar__toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.navbar__toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 860px){
  .navbar__toggle{ display:flex; }
  .navbar__nav{
    position: fixed; inset: 0 0 0 auto; top: 0; height: 100vh; width: min(78vw, 340px);
    background: rgba(6,9,16,0.98); backdrop-filter: blur(16px);
    border-left: 1px solid var(--border);
    padding: 6rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform var(--dur) var(--ease);
    z-index: 90;
  }
  .navbar__nav.is-open{ transform: translateX(0); }
  .navbar__list{ flex-direction: column; align-items: flex-start; gap: 1.6rem; }
  .navbar__list a{ font-size: 1rem; }
}

/* ---------- 5. HERO ---------- */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex; align-items:center; justify-content:center;
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas{ position:absolute; inset:0; width:100%; height:100%; z-index:0; opacity:0.8; }
.hero__grid{
  position:absolute; inset:-10%;
  background-image:
    linear-gradient(var(--border-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-strong) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: 0.16;
  transform: perspective(600px) rotateX(55deg) translateY(10%);
  transform-origin: bottom;
  z-index: 0;
  mask-image: linear-gradient(to top, black, transparent 75%);
}
.hero__vignette{
  position:absolute; inset:0; z-index:1;
  background:
    radial-gradient(ellipse 70% 60% at 50% 20%, rgba(47,125,255,0.14), transparent 60%),
    radial-gradient(ellipse 90% 70% at 50% 100%, rgba(0,0,0,0.9), transparent 60%),
    linear-gradient(180deg, rgba(5,7,12,0.4), var(--bg) 92%);
}
.hero__hud{
  position:absolute; top: 6.5rem; left: 0; right:0; z-index:2;
  display:flex; justify-content:center; gap: 2.5rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; color: var(--text-dimmer);
}
.hero__hud-item{ display:flex; align-items:center; gap:.5em; }
.hero__hud-item::before{ content:""; width:5px; height:5px; border-radius:50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

.hero__content{ position: relative; z-index: 3; text-align:center; max-width: 900px; }
.eyebrow--hero{ justify-content:center; }
.hero__title{
  font-size: clamp(2.1rem, 6.2vw, 4.6rem);
  line-height: 1.06;
  text-transform: uppercase;
  background: linear-gradient(180deg, #fff 30%, #a9c4ee 100%);
  -webkit-background-clip: text; background-clip:text; color: transparent;
  margin-bottom: 1.6rem;
}
.hero__subtitle{
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 auto 2.4rem;
}
.hero__actions{ display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; }

.hero__uav{
  position:absolute; right: clamp(-10px, 3vw, 60px); top: 50%;
  width: min(30vw, 340px); aspect-ratio: 1 / 1;
  transform: translateY(-50%);
  z-index: 1; pointer-events:none;
  filter: drop-shadow(0 0 46px rgba(47,125,255,0.22)) drop-shadow(0 0 20px rgba(69,230,216,0.14));
}
.autoscan{ position:relative; width:100%; height:100%; animation: autoscanFloat 8s ease-in-out infinite; }
.autoscan__ticks{
  position:absolute; inset:0; border-radius:50%;
  background: repeating-conic-gradient(var(--border-strong) 0deg 1deg, transparent 1deg 9deg);
  -webkit-mask-image: radial-gradient(circle, transparent 90%, black 91%, black 100%);
  mask-image: radial-gradient(circle, transparent 90%, black 91%, black 100%);
  opacity: 0.55;
}
.autoscan__ring{ position:absolute; border-radius:50%; border: 1px solid var(--border-strong); }
.autoscan__ring--1{ inset: 0; }
.autoscan__ring--2{ inset: 16%; border-color: rgba(69,230,216,0.3); }
.autoscan__ring--3{ inset: 34%; border-color: rgba(47,125,255,0.32); }
.autoscan__ring--dashed{
  inset: 8%; border-style: dashed; border-color: rgba(154,168,189,0.35);
  animation: autoscanOrbit 34s linear infinite reverse;
}
.autoscan__crosshair{ position:absolute; inset:0; }
.autoscan__crosshair::before, .autoscan__crosshair::after{ content:""; position:absolute; background: var(--border-strong); opacity:0.6; }
.autoscan__crosshair::before{ left:50%; top:2%; bottom:2%; width:1px; transform:translateX(-50%); }
.autoscan__crosshair::after{ top:50%; left:2%; right:2%; height:1px; transform:translateY(-50%); }

.autoscan__sweep{
  position:absolute; inset:0; border-radius:50%;
  background: conic-gradient(from 0deg, rgba(69,230,216,0.5), rgba(69,230,216,0.08) 18%, transparent 34%);
  animation: autoscanOrbit 4.5s linear infinite;
  mix-blend-mode: screen;
}

.autoscan__core{
  position:absolute; left:50%; top:50%; width:11px; height:11px; border-radius:50%;
  background: var(--cyan); transform: translate(-50%,-50%);
  box-shadow: 0 0 18px 5px rgba(69,230,216,0.6);
}

.autoscan__orbit{ position:absolute; inset:0; border-radius:50%; animation: autoscanOrbit linear infinite; }
.autoscan__orbit--1{ animation-duration: 10s; }
.autoscan__orbit--2{ animation-duration: 16s; animation-direction: reverse; }
.autoscan__orbit--3{ animation-duration: 24s; }
.autoscan__node{
  position:absolute; left:50%; width:8px; height:8px; margin-left:-4px; border-radius:50%;
  background: var(--accent); box-shadow: 0 0 12px 3px rgba(47,125,255,0.65);
}
.autoscan__orbit--1 .autoscan__node{ top: 0%; margin-top:-4px; }
.autoscan__orbit--2 .autoscan__node{ top: 16%; margin-top:-4px; }
.autoscan__orbit--3 .autoscan__node{ top: 34%; margin-top:-4px; }

.autoscan__blip{
  position:absolute; width:6px; height:6px; margin:-3px 0 0 -3px; border-radius:50%;
  background: var(--cyan); box-shadow: 0 0 10px 2px rgba(69,230,216,0.7);
  animation: autoscanBlink 2.4s ease-in-out infinite;
}
.autoscan__blip::before{
  content:""; position:absolute; inset:-7px; border-radius:50%; border:1px solid var(--cyan);
  animation: autoscanPing 2.4s ease-out infinite;
  animation-delay: inherit;
}

.autoscan__label{
  position:absolute; left:50%; transform:translateX(-50%);
  font-family: var(--font-mono); font-size:0.62rem; letter-spacing:0.14em; color: var(--text-dimmer);
  white-space: nowrap;
}
.autoscan__label--top{ top:-1.9rem; }
.autoscan__label--bottom{ bottom:-1.9rem; }

@keyframes autoscanFloat{ 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-10px); } }
@keyframes autoscanOrbit{ to{ transform: rotate(360deg); } }
@keyframes autoscanPing{ 0%{ transform: scale(0.35); opacity:0.9; } 100%{ transform: scale(2.8); opacity:0; } }
@keyframes autoscanBlink{ 0%,100%{ opacity:0.45; } 50%{ opacity:1; } }

@media (prefers-reduced-motion: reduce){
  .autoscan, .autoscan__sweep, .autoscan__orbit, .autoscan__ring--dashed, .autoscan__blip, .autoscan__blip::before{
    animation: none !important;
  }
}

.hero__scroll{
  position:absolute; bottom: 2rem; left:50%; transform: translateX(-50%); z-index:3;
  display:flex; flex-direction:column; align-items:center; gap:.6rem;
  font-family: var(--font-mono); font-size:0.65rem; letter-spacing:0.3em; color: var(--text-dimmer);
}
.hero__scroll-line{ width:1px; height:34px; background: linear-gradient(var(--cyan), transparent); position:relative; overflow:hidden; }
.hero__scroll-line::after{ content:""; position:absolute; top:-100%; left:0; width:100%; height:100%; background: var(--cyan); animation: scrollLine 2.2s ease-in-out infinite; }
@keyframes scrollLine{ 0%{ top:-100%; } 60%,100%{ top:100%; } }

@media (max-width: 960px){
  .hero__uav{ width: min(30vw, 220px); top: auto; bottom: 2%; right: clamp(-6px, 3vw, 24px); transform: none; opacity: 0.85; }
}
@media (max-width: 700px){
  .hero__uav{ width: min(42vw, 190px); bottom: -4%; right: -8px; opacity: 0.8; }
  .hero__hud{ display:none; }
}

/* ---------- 6. ABOUT ---------- */
.about__text{ max-width: 760px; color: var(--text-dim); font-size: 1.05rem; display:flex; flex-direction:column; gap:1rem; margin-bottom: 3rem; }
.about__grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap:1px;
  background: var(--border); border:1px solid var(--border); border-radius: var(--radius-lg); overflow:hidden;
}
.about__card{
  background: var(--surface); padding: 2.2rem 1.6rem; transition: background var(--dur-fast);
}
.about__card:hover{ background: var(--surface-2); }
.about__card-index{ font-family: var(--font-mono); color: var(--cyan); font-size:0.85rem; letter-spacing:.1em; }
.about__card h3{ font-size: 1.1rem; margin: 0.9rem 0 0.6rem; }
.about__card p{ color: var(--text-dim); font-size: 0.92rem; }
@media (max-width: 900px){ .about__grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px){ .about__grid{ grid-template-columns: 1fr; } }

/* ---------- 7. TECHNOLOGIES ---------- */
.tech__grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.tech__card{
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.7rem;
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), box-shadow var(--dur-fast);
  opacity:0; transform: translateY(24px);
}
.tech__card.is-visible{ opacity:1; transform: translateY(0); }
.tech__card::before{
  content:""; position:absolute; inset:0; border-radius: inherit; padding:1px;
  background: linear-gradient(135deg, var(--cyan), transparent 40%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--dur-fast);
}
.tech__card:hover{ transform: translateY(-6px); box-shadow: 0 20px 50px -20px rgba(47,125,255,0.45); }
.tech__card:hover::before{ opacity: 1; }
.tech__icon{
  width:46px; height:46px; border-radius: 12px; display:flex; align-items:center; justify-content:center;
  background: var(--accent-soft); color: var(--cyan); margin-bottom: 1.4rem;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast);
}
.tech__card:hover .tech__icon{ transform: scale(1.08) rotate(-4deg); background: var(--cyan-soft); }
.tech__card h3{ font-size: 1.15rem; margin-bottom: 0.6rem; }
.tech__card p{ color: var(--text-dim); font-size: 0.92rem; }
@media (max-width: 940px){ .tech__grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px){ .tech__grid{ grid-template-columns: 1fr; } }

/* ---------- 8. ARCHITECTURE ---------- */
.architecture{ background: var(--bg-alt); }
.architecture__bg{
  position:absolute; inset:0; z-index:0;
  background: radial-gradient(ellipse 60% 50% at 80% 0%, rgba(69,230,216,0.08), transparent 60%);
}
.architecture__subtitle{ color: var(--text-dim); max-width: 640px; margin-bottom: 2.5rem; }
.architecture__panel{
  position:relative; z-index:1;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden;
}
.architecture__panel-head{
  display:flex; align-items:center; gap:.5rem; padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border); background: rgba(255,255,255,0.02);
}
.dot{ width:9px; height:9px; border-radius:50%; opacity:.7; }
.dot--red{ background:#ff5f56; } .dot--yellow{ background:#ffbd2e; } .dot--green{ background:#27c93f; }
.architecture__panel-title{ margin-left: .6rem; font-family: var(--font-mono); font-size:0.72rem; letter-spacing:0.1em; color: var(--text-dimmer); }
.arch-grid{
  display:grid; grid-template-columns: repeat(2, 1fr); gap:1px;
  background: var(--border);
}
.arch-card{
  position: relative;
  background: var(--surface);
  padding: 2.2rem clamp(1.4rem, 3vw, 2.2rem);
  display:flex; flex-direction:column; gap: .9rem;
  overflow: hidden;
  transition: background var(--dur-fast), transform var(--dur-fast) var(--ease);
  opacity:0; transform: translateY(20px);
}
.arch-card.is-visible{ opacity:1; transform: translateY(0); }
.arch-card::before{
  content:""; position:absolute; inset:0; opacity:0;
  background: radial-gradient(ellipse 120% 100% at 0% 0%, rgba(69,230,216,0.08), transparent 60%);
  transition: opacity var(--dur-fast); pointer-events:none;
}
.arch-card:hover{ background: var(--surface-2); }
.arch-card:hover::before{ opacity:1; }
.arch-card__icon{
  width:46px; height:46px; border-radius: 12px; display:flex; align-items:center; justify-content:center;
  background: var(--accent-soft); color: var(--cyan); flex-shrink:0;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast);
}
.arch-card:hover .arch-card__icon{ transform: scale(1.08) rotate(-4deg); background: var(--cyan-soft); }
.arch-card h3{
  font-family: var(--font-mono); font-size:0.92rem; letter-spacing:0.04em; color: var(--text);
}
.arch-card p{ color: var(--text-dim); font-size:0.92rem; }
.arch-card__tags{ display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.2rem; }
.arch-card__tags span{
  font-family: var(--font-mono); font-size:0.68rem; letter-spacing:.04em;
  color: var(--text-dim); border:1px solid var(--border-strong); background: rgba(255,255,255,0.02);
  padding: .35rem .7rem; border-radius:999px;
}
@media (max-width: 760px){ .arch-grid{ grid-template-columns: 1fr; } }

/* ---------- 9. PROJECTS ---------- */
.projects__list{ display:flex; flex-direction:column; gap: 1.5rem; }
.project-card{
  display:grid; grid-template-columns: 1.1fr 1fr; gap: 0;
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-lg);
  overflow:hidden;
  opacity:0; transform: translateY(28px); transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease), border-color var(--dur-fast);
}
.project-card.is-visible{ opacity:1; transform:translateY(0); }
.project-card:hover{ border-color: var(--border-strong); }
.project-card__media{
  position:relative; min-height: 260px; overflow:hidden;
  border-right: 1px solid var(--border);
  background:
    radial-gradient(ellipse 70% 60% at 60% 40%, rgba(47,125,255,0.16), transparent 65%),
    var(--bg-alt);
}
.project-card__media img{ width:100%; height:100%; object-fit:cover; transition: transform .7s var(--ease); }
.project-card__media img[style*="contain"]{ padding: 1.5rem; }
.project-card:hover .project-card__media img{ transform: scale(1.05); }
.project-card__number{
  position:absolute; top:1.2rem; left:1.2rem; font-family: var(--font-mono); font-size:0.8rem;
  color: var(--cyan); background: rgba(5,7,12,0.65); padding:.3rem .7rem; border-radius: 6px; letter-spacing:.1em;
  border: 1px solid var(--border-strong); backdrop-filter: blur(6px);
}
.project-card__body{ padding: 2.4rem clamp(1.5rem,3vw,2.6rem); display:flex; flex-direction:column; justify-content:center; gap:1rem; }
.project-card__body h3{ font-size: clamp(1.3rem,2vw,1.6rem); }
.project-card__body p{ color: var(--text-dim); font-size:0.96rem; }
.project-card__tags{ display:flex; flex-wrap:wrap; gap:.5rem; }
.project-card__tags span{
  font-family: var(--font-mono); font-size:0.68rem; letter-spacing:.06em; text-transform: uppercase;
  color: var(--text-dim); border:1px solid var(--border); padding: .35rem .7rem; border-radius:999px;
}
.project-card__link{
  align-self:flex-start; margin-top:.4rem; font-family: var(--font-mono); font-size:0.8rem; letter-spacing:.06em;
  color: var(--cyan); display:inline-flex; align-items:center; gap:.5rem; text-transform:uppercase;
  transition: gap var(--dur-fast);
}
.project-card__link:hover{ gap:.85rem; }
@media (max-width: 860px){ .project-card{ grid-template-columns:1fr; } .project-card__media{ border-right:none; border-bottom:1px solid var(--border); min-height:220px; } }

/* ---------- 11. ENGINEERING TEAMS ---------- */
.eng-teams__system{ display:flex; align-items:stretch; justify-content:center; gap: 0; flex-wrap: wrap; }
.eng-team-card{
  flex: 1 1 260px; background: var(--surface); border:1px solid var(--border); padding: 2.2rem 1.8rem; position:relative;
}
.eng-team-card:not(:last-child){ border-right: none; }
.eng-team-card:first-child{ border-radius: var(--radius-lg) 0 0 var(--radius-lg); }
.eng-team-card:last-child{ border-radius: 0 var(--radius-lg) var(--radius-lg) 0; }
.eng-team-card h3{ font-family: var(--font-mono); letter-spacing:0.14em; font-size:0.95rem; color: var(--cyan); margin-bottom:1.2rem; }
.eng-team-card ul{ display:flex; flex-direction:column; gap:.6rem; }
.eng-team-card li{ color: var(--text-dim); font-size:0.9rem; padding-left: 1rem; position:relative; }
.eng-team-card li::before{ content:"—"; position:absolute; left:0; color: var(--text-dimmer); }
.eng-teams__link{
  display:none; align-items:center; justify-content:center; width:0; color: var(--text-dimmer);
}
@media (max-width: 860px){
  .eng-team-card, .eng-team-card:first-child, .eng-team-card:last-child{ border-radius: var(--radius-lg); border-right: 1px solid var(--border); }
  .eng-team-card{ flex-basis: 100%; }
}

/* ---------- 12. STATS ---------- */
.stats{ padding: clamp(3.5rem,7vw,5.5rem) 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.stats__grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 1.5rem; text-align:center; }
.stat-item .stat-value{
  font-family: var(--font-head); font-size: clamp(2rem,4.5vw,3.2rem); font-weight:700;
  background: linear-gradient(135deg, #fff, var(--cyan)); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.stat-item .stat-label{ margin-top:.5rem; font-family: var(--font-mono); font-size:0.72rem; letter-spacing:0.12em; color: var(--text-dimmer); text-transform:uppercase; }
@media (max-width: 700px){ .stats__grid{ grid-template-columns: repeat(2,1fr); gap: 2.4rem 1.5rem; } }

/* ---------- 14. TIMELINE ---------- */
.timeline__track{ display:flex; gap: 0; overflow-x:auto; padding-bottom: 1rem; scrollbar-width: thin; }
.timeline-item{
  flex: 1 1 220px; min-width: 220px; position:relative; padding: 2rem 1.6rem 0.5rem;
  border-top: 2px solid var(--border);
}
.timeline-item::before{
  content:""; position:absolute; top:-6px; left:1.6rem; width:11px; height:11px; border-radius:50%;
  background: var(--bg); border: 2px solid var(--cyan); box-shadow: 0 0 14px rgba(69,230,216,0.6);
}
.timeline-item .timeline-year{ font-family: var(--font-mono); color: var(--cyan); font-size:1.1rem; letter-spacing:.05em; }
.timeline-item .timeline-label{ margin-top:.6rem; font-size:1rem; color: var(--text); }
@media (max-width: 760px){
  .timeline__track{ flex-direction: column; }
  .timeline-item{ border-top:none; border-left: 2px solid var(--border); padding: 0.5rem 0 2rem 1.6rem; }
  .timeline-item::before{ top: 1.6rem; left:-6px; }
}

/* ---------- 15. CONTACT ---------- */
.contact{ background: var(--bg-alt); }
.contact__bg{ position:absolute; inset:0; z-index:0; background: radial-gradient(ellipse 60% 60% at 85% 20%, rgba(47,125,255,0.10), transparent 60%); }
.contact__inner{ position:relative; z-index:1; display:grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem,5vw,4rem); }
.contact__subtitle{ color: var(--text-dim); font-size:1.05rem; margin-bottom:2rem; max-width: 420px; }
.contact__actions{ margin-bottom: 2rem; }
.contact__social{ display:flex; gap:1.2rem; }
.contact__social a{
  display:flex; align-items:center; gap:.5rem; font-family: var(--font-mono); font-size:0.78rem; letter-spacing:.04em;
  color: var(--text-dim); border:1px solid var(--border); padding: .6rem 1rem; border-radius: 999px;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}
.contact__social a:hover{ color: var(--cyan); border-color: var(--border-strong); background: var(--cyan-soft); }

.contact__form{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-lg);
  padding: clamp(1.6rem,3vw,2.4rem); display:flex; flex-direction:column; gap: 1.2rem;
}
.form__row{ display:grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form__field{ display:flex; flex-direction:column; gap:.5rem; font-family: var(--font-mono); font-size:0.7rem; letter-spacing:.1em; color: var(--text-dimmer); text-transform:uppercase; }
.form__field--full{ grid-column: 1 / -1; }
.form__field input, .form__field textarea, .form__field select{
  background: var(--bg); border:1px solid var(--border); border-radius:8px; padding: .8rem .9rem;
  color: var(--text); font-family: var(--font-body); font-size:0.95rem; letter-spacing:normal; text-transform:none;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.form__field input:focus, .form__field textarea:focus, .form__field select:focus{
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(69,230,216,0.15); outline:none;
}
.form__field textarea{ resize: vertical; min-height: 110px; }
.form__status{ min-height: 1.2em; font-family: var(--font-mono); font-size:0.8rem; color: var(--green); }
.form__status.is-error{ color: #ff6b6b; }
@media (max-width: 860px){ .contact__inner{ grid-template-columns:1fr; } .form__row{ grid-template-columns:1fr; } }

/* ---------- 16. FOOTER ---------- */
.footer{ background: var(--bg); border-top:1px solid var(--border); padding: 3.5rem 0 1.5rem; position:relative; z-index:1; }
.footer__inner{ display:flex; flex-wrap:wrap; justify-content:space-between; gap: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
.footer__brand p{ margin-top:.6rem; color: var(--text-dimmer); font-size:0.9rem; max-width:280px; }
.footer__nav ul{ display:flex; flex-wrap:wrap; gap: 1.4rem 2rem; }
.footer__nav a{ color: var(--text-dim); font-size:0.9rem; transition: color var(--dur-fast); }
.footer__nav a:hover{ color: var(--cyan); }
.footer__social{ display:flex; gap:1rem; }
.footer__social a{
  width:38px; height:38px; border:1px solid var(--border); border-radius:50%; display:flex; align-items:center; justify-content:center;
  color: var(--text-dim); transition: color var(--dur-fast), border-color var(--dur-fast);
}
.footer__social a:hover{ color: var(--cyan); border-color: var(--border-strong); }
.footer__bottom{ padding-top: 1.5rem; color: var(--text-dimmer); font-size:0.82rem; }

/* ---------- 17. UTILITIES ---------- */
.visually-hidden{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip: rect(0,0,0,0); white-space:nowrap; border:0;
}