/* =========================================================
   SleipnirX — Advanced Detonation Propulsion
   Global Stylesheet
   ========================================================= */

:root{
  --bg:#05070d;
  --bg-2:#0a0e18;
  --panel:#0d1320;
  --panel-2:#111a2b;
  --line:rgba(120,150,200,.14);
  --text:#e8eef7;
  --muted:#93a2bd;
  --muted-2:#67768f;
  --blue:#3da9ff;
  --blue-deep:#1f6fe0;
  --ignite:#ff6a2b;
  --ignite-soft:#ffb27a;
  --plasma:#7c5cff;
  --white:#ffffff;
  --radius:16px;
  --radius-sm:10px;
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 30px 80px -30px rgba(0,0,0,.8);
  --font:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  --display:"Space Grotesk","Inter",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
section{position:relative}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.1;letter-spacing:-.02em}
h1{font-size:clamp(2.6rem,6vw,4.6rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.9rem)}
h3{font-size:1.25rem}
p{color:var(--muted)}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--display);font-size:.78rem;font-weight:600;
  letter-spacing:.28em;text-transform:uppercase;color:var(--blue);
  margin-bottom:1.1rem;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--blue),transparent)}
.grad{background:linear-gradient(120deg,#fff 10%,var(--blue) 55%,var(--ignite));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--display);font-weight:600;font-size:.95rem;
  padding:.95rem 1.6rem;border-radius:50px;border:1px solid transparent;
  cursor:pointer;transition:.35s var(--ease);position:relative;
}
.btn-primary{background:linear-gradient(120deg,var(--ignite),#ff8a4f);color:#1a0d05;box-shadow:0 12px 40px -12px rgba(255,106,43,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 50px -12px rgba(255,106,43,.75)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--blue);color:#fff;background:rgba(61,169,255,.08)}
.btn svg{width:16px;height:16px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:.4s var(--ease);
}
.site-header.scrolled{
  background:rgba(5,7,13,.82);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--display);font-weight:700;font-size:1.25rem;letter-spacing:.04em}
.brand .mark{width:38px;height:38px}
.brand b{color:#fff}
.brand span{color:var(--blue)}
.nav-links{display:flex;align-items:center;gap:2rem;list-style:none}
.nav-links a{font-size:.94rem;color:var(--muted);font-weight:500;position:relative;transition:.25s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a.active::after{content:"";position:absolute;left:0;bottom:-6px;width:100%;height:2px;background:linear-gradient(90deg,var(--blue),var(--ignite))}
.nav-cta{display:flex;align-items:center;gap:1rem}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:#fff;transition:.3s}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:78px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1100px 600px at 75% 18%,rgba(61,169,255,.18),transparent 60%),
    radial-gradient(900px 500px at 12% 85%,rgba(255,106,43,.16),transparent 60%),
    radial-gradient(700px 700px at 50% 50%,rgba(124,92,255,.08),transparent 70%);
}
.stars{position:absolute;inset:0;background-image:
  radial-gradient(1px 1px at 20% 30%,#fff,transparent),
  radial-gradient(1px 1px at 60% 70%,#cfe2ff,transparent),
  radial-gradient(1px 1px at 80% 20%,#fff,transparent),
  radial-gradient(1px 1px at 35% 80%,#fff,transparent),
  radial-gradient(2px 2px at 90% 60%,#cfe2ff,transparent),
  radial-gradient(1px 1px at 10% 60%,#fff,transparent),
  radial-gradient(1px 1px at 50% 15%,#fff,transparent);
  background-repeat:repeat;background-size:600px 600px;opacity:.5;animation:drift 120s linear infinite}
@keyframes drift{from{background-position:0 0}to{background-position:600px 600px}}
.grid-floor{position:absolute;left:0;right:0;bottom:0;height:42%;
  background:linear-gradient(transparent,rgba(61,169,255,.05));
  -webkit-mask:linear-gradient(transparent,#000);mask:linear-gradient(transparent,#000)}
.grid-floor::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:60px 60px;transform:perspective(400px) rotateX(62deg);transform-origin:bottom;opacity:.6}

.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;width:100%}
.hero h1{margin:.4rem 0 1.3rem}
.hero p.lead{font-size:1.18rem;max-width:560px;color:#b8c6dd}
.hero-actions{display:flex;gap:1rem;margin-top:2.2rem;flex-wrap:wrap}
.hero-stats{display:flex;gap:2.4rem;margin-top:3rem;flex-wrap:wrap}
.hero-stats .s b{font-family:var(--display);font-size:1.9rem;color:#fff;display:block}
.hero-stats .s span{font-size:.82rem;color:var(--muted-2);letter-spacing:.12em;text-transform:uppercase}

/* Engine visual */
.engine-vis{position:relative;display:flex;justify-content:center;align-items:center;height:480px}
.engine-vis .ring{position:absolute;border-radius:50%;border:1px solid var(--line)}
.engine-vis .r1{width:420px;height:420px;animation:spin 26s linear infinite}
.engine-vis .r2{width:320px;height:320px;border-color:rgba(61,169,255,.25);animation:spin 18s linear infinite reverse}
.engine-vis .r3{width:220px;height:220px;border-color:rgba(255,106,43,.3)}
@keyframes spin{to{transform:rotate(360deg)}}
.engine-vis .core{width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle at 50% 40%,#fff,var(--ignite) 30%,#b3340c 70%,#3a0e02);
  box-shadow:0 0 60px rgba(255,106,43,.7),0 0 120px rgba(255,106,43,.3);animation:pulse 3.2s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1);filter:brightness(1)}50%{transform:scale(1.06);filter:brightness(1.25)}}
.engine-vis .dot{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--blue);box-shadow:0 0 14px var(--blue)}

/* ---------- Sections ---------- */
.section{padding:120px 0}
.section-head{max-width:720px;margin-bottom:64px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{margin-top:1rem;font-size:1.08rem}

.alt{background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.divider-glow{height:1px;background:linear-gradient(90deg,transparent,var(--blue),transparent);opacity:.4}

/* Cards grid */
.grid{display:grid;gap:24px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;transition:.4s var(--ease);position:relative;overflow:hidden;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--blue),var(--ignite));transform:scaleX(0);transform-origin:left;transition:.5s var(--ease)}
.card:hover{transform:translateY(-6px);border-color:rgba(61,169,255,.35);box-shadow:var(--shadow)}
.card:hover::before{transform:scaleX(1)}
.card .ico{width:54px;height:54px;border-radius:12px;display:grid;place-items:center;margin-bottom:20px;
  background:rgba(61,169,255,.1);border:1px solid rgba(61,169,255,.2)}
.card .ico svg{width:26px;height:26px;stroke:var(--blue)}
.card h3{color:#fff;margin-bottom:.6rem}
.card p{font-size:.96rem}
.card .tag{position:absolute;top:22px;right:22px;font-family:var(--display);font-size:.7rem;letter-spacing:.15em;color:var(--ignite);text-transform:uppercase}

/* USP feature row */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.feature-list{list-style:none;display:grid;gap:18px;margin-top:1.6rem}
.feature-list li{display:flex;gap:16px;align-items:flex-start}
.feature-list .chk{flex:0 0 auto;width:26px;height:26px;border-radius:7px;background:rgba(255,106,43,.12);border:1px solid rgba(255,106,43,.3);display:grid;place-items:center;margin-top:2px}
.feature-list .chk svg{width:14px;height:14px;stroke:var(--ignite)}
.feature-list b{color:#fff;font-family:var(--display);font-weight:600}

.panel-visual{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel);position:relative;min-height:380px;display:grid;place-items:center}

/* Roadmap */
.roadmap{position:relative;display:grid;gap:0}
.roadmap::before{content:"";position:absolute;left:24px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--blue),var(--ignite),transparent)}
.phase{position:relative;padding:0 0 46px 70px}
.phase:last-child{padding-bottom:0}
.phase .node{position:absolute;left:14px;top:2px;width:22px;height:22px;border-radius:50%;background:var(--bg);border:2px solid var(--blue);display:grid;place-items:center}
.phase .node::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}
.phase.active .node{border-color:var(--ignite);box-shadow:0 0 0 6px rgba(255,106,43,.12)}
.phase.active .node::after{background:var(--ignite)}
.phase .ph-tag{font-family:var(--display);font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--blue)}
.phase.active .ph-tag{color:var(--ignite)}
.phase h3{color:#fff;margin:.35rem 0 .5rem}
.phase p{font-size:.97rem;max-width:620px}

/* Stat band */
.band{padding:80px 0;background:
  linear-gradient(180deg,var(--bg-2),var(--bg)),
  radial-gradient(800px 300px at 50% 0,rgba(61,169,255,.1),transparent)}
.band .grid{text-align:center}
.band .num{font-family:var(--display);font-size:clamp(2.2rem,5vw,3.4rem);font-weight:700;
  background:linear-gradient(120deg,#fff,var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.band .lbl{color:var(--muted);font-size:.92rem;margin-top:.4rem}

/* CTA */
.cta-block{
  border:1px solid var(--line);border-radius:24px;padding:70px 60px;text-align:center;
  background:
    radial-gradient(700px 360px at 50% 0,rgba(255,106,43,.14),transparent 70%),
    radial-gradient(700px 360px at 50% 100%,rgba(61,169,255,.12),transparent 70%),
    linear-gradient(180deg,var(--panel),var(--panel-2));
  position:relative;overflow:hidden;
}
.cta-block h2{margin-bottom:1rem}
.cta-block p{max-width:560px;margin:0 auto 2rem;font-size:1.08rem}
.cta-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{padding:170px 0 80px;position:relative;overflow:hidden}
.page-hero .stars{opacity:.4}
.page-hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 400px at 70% 20%,rgba(61,169,255,.14),transparent 60%),radial-gradient(700px 300px at 10% 90%,rgba(255,106,43,.1),transparent 60%);z-index:0}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(2.4rem,5vw,3.8rem);margin-bottom:1.2rem}
.page-hero p{font-size:1.15rem;max-width:640px}
.breadcrumb{font-size:.82rem;color:var(--muted-2);margin-bottom:1.4rem;letter-spacing:.08em}
.breadcrumb a:hover{color:var(--blue)}

/* Tech spec table */
.spec{width:100%;border-collapse:collapse;margin-top:1.4rem}
.spec th,.spec td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);font-size:.95rem}
.spec th{color:var(--muted-2);font-family:var(--display);font-weight:500;letter-spacing:.06em;text-transform:uppercase;font-size:.78rem;width:42%}
.spec td{color:#dce6f5}

.pill{display:inline-block;padding:.35rem .85rem;border-radius:50px;font-size:.78rem;font-family:var(--display);
  border:1px solid var(--line);color:var(--muted);margin:0 .4rem .4rem 0}
.pill.on{border-color:rgba(255,106,43,.4);color:var(--ignite-soft);background:rgba(255,106,43,.06)}

/* Team */
.member{text-align:center}
.member .avatar{width:110px;height:110px;border-radius:50%;margin:0 auto 18px;
  background:linear-gradient(135deg,var(--panel-2),var(--panel));border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--display);font-size:2rem;color:var(--blue);font-weight:700}
.member h3{color:#fff;font-size:1.1rem}
.member .role{color:var(--ignite-soft);font-size:.86rem;font-family:var(--display);letter-spacing:.05em;margin-top:.2rem}
.member p{font-size:.9rem;margin-top:.7rem}

/* Careers */
.job{display:flex;justify-content:space-between;align-items:center;gap:24px;
  background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 30px;transition:.35s var(--ease)}
.job:hover{border-color:rgba(61,169,255,.35);transform:translateX(4px)}
.job .meta{display:flex;gap:14px;flex-wrap:wrap;margin-top:.5rem}
.job .meta span{font-size:.82rem;color:var(--muted-2);display:inline-flex;align-items:center;gap:.4rem}
.job h3{color:#fff}
.job-apply{flex:0 0 auto}

.value-card .ico{background:rgba(255,106,43,.1);border-color:rgba(255,106,43,.2)}
.value-card .ico svg{stroke:var(--ignite)}

/* Forms */
.form{display:grid;gap:18px}
.field{display:grid;gap:.5rem}
.field label{font-size:.85rem;color:var(--muted);font-family:var(--display);letter-spacing:.04em}
.field input,.field textarea,.field select{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:.9rem 1rem;color:#fff;font-family:var(--font);font-size:.96rem;transition:.25s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(61,169,255,.12)}
.field textarea{resize:vertical;min-height:130px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-note{font-size:.82rem;color:var(--muted-2)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}
.info-item{display:flex;gap:16px;align-items:flex-start;padding:20px 0;border-bottom:1px solid var(--line)}
.info-item .ico{width:44px;height:44px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;background:rgba(61,169,255,.1);border:1px solid rgba(61,169,255,.2)}
.info-item .ico svg{width:20px;height:20px;stroke:var(--blue)}
.info-item h4{color:#fff;font-family:var(--display);font-size:1rem}
.info-item p,.info-item a{color:var(--muted);font-size:.94rem}
.info-item a:hover{color:var(--blue)}

/* ---------- Footer ---------- */
.footer{background:var(--bg-2);border-top:1px solid var(--line);padding:80px 0 36px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:54px;border-bottom:1px solid var(--line)}
.footer .brand{margin-bottom:1.2rem}
.footer-col h5{font-family:var(--display);font-size:.82rem;letter-spacing:.18em;text-transform:uppercase;color:#fff;margin-bottom:1.2rem}
.footer-col ul{list-style:none;display:grid;gap:.7rem}
.footer-col a{color:var(--muted);font-size:.92rem;transition:.2s}
.footer-col a:hover{color:var(--blue)}
.footer-about p{font-size:.92rem;margin-bottom:1.2rem}
.subscribe{display:flex;gap:.5rem;margin-top:1rem}
.subscribe input{flex:1;background:var(--bg);border:1px solid var(--line);border-radius:50px;padding:.7rem 1.1rem;color:#fff;font-size:.88rem}
.subscribe input:focus{outline:none;border-color:var(--blue)}
.subscribe button{flex:0 0 auto;width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;background:linear-gradient(120deg,var(--ignite),#ff8a4f);display:grid;place-items:center}
.subscribe button svg{width:16px;height:16px;stroke:#1a0d05}
.socials{display:flex;gap:12px;margin-top:1.4rem}
.socials a{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;transition:.3s}
.socials a:hover{border-color:var(--blue);background:rgba(61,169,255,.08);transform:translateY(-2px)}
.socials svg{width:18px;height:18px;fill:var(--muted)}
.socials a:hover svg{fill:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding-top:30px}
.footer-bottom p{font-size:.85rem;color:var(--muted-2)}
.footer-bottom .legal{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom .legal a{font-size:.85rem;color:var(--muted-2)}
.footer-bottom .legal a:hover{color:var(--blue)}
.entity-note{font-size:.8rem;color:var(--muted-2);margin-top:.4rem}

/* reveal animation */
.reveal{opacity:0;transform:translateY(28px);transition:.8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .engine-vis{height:360px;order:-1}
  .feature-row,.contact-grid{grid-template-columns:1fr;gap:36px}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media(max-width:760px){
  .nav-links{position:fixed;inset:78px 0 auto 0;flex-direction:column;background:rgba(5,7,13,.97);
    backdrop-filter:blur(16px);padding:30px;gap:1.4rem;border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:.4s var(--ease);z-index:90}
  .nav-links.open{transform:none}
  .burger{display:flex}
  .nav-cta .btn{display:none}
  .section{padding:84px 0}
  .g3,.g4,.g2,.row2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-block{padding:48px 26px}
  .job{flex-direction:column;align-items:flex-start}
  .hero-stats{gap:1.6rem}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .wrap{padding:0 20px}
}