/* ============================================================
   ODYSSEY — The Story of an Astronaut — stylesheet
   Visuals are drawn to <canvas>; no image URLs in this file.
   ============================================================ */

:root{
  --bg:#04060d;
  --ink:#eaf1fb;
  --muted:#8f9bb3;
  --accent:#6cc6ff;
  --accent-soft:#b8e4ff;
  --warm:#ffb066;
  --line:rgba(255,255,255,.12);
  --head:'Space Grotesk', 'Segoe UI', sans-serif;
  --body:'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --wrap:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
img,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 34px}

/* ---------- Fixed nav bar ---------- */
header#siteNav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  height:70px;padding:0 34px;
  background:linear-gradient(to bottom, rgba(4,6,13,.72), rgba(4,6,13,.34));
  backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line)}
.wordmark{font-family:var(--head);font-weight:600;letter-spacing:.46em;text-transform:uppercase;font-size:1.02rem;
  white-space:nowrap;transition:color .3s ease}
.wordmark b{color:var(--accent);font-weight:700}
.wordmark:hover{color:var(--accent-soft)}

.nav-menu{display:flex;align-items:center;gap:30px}
.nav-menu a{font-family:var(--head);font-weight:500;letter-spacing:.12em;text-transform:uppercase;font-size:.74rem;
  color:var(--muted);position:relative;padding:6px 0;transition:color .25s ease}
.nav-menu a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:linear-gradient(90deg,var(--accent),var(--warm));transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.nav-menu a:hover,.nav-menu a:focus-visible{color:var(--ink)}
.nav-menu a:hover::after,.nav-menu a:focus-visible::after{transform:scaleX(1)}

.chapter-ind{font-family:var(--head);font-weight:400;letter-spacing:.28em;font-size:.82rem;color:var(--muted);
  padding-left:26px;margin-left:4px;border-left:1px solid var(--line)}
.chapter-ind b{color:var(--accent);font-weight:600}

/* hamburger */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;
  background:transparent;border:0;cursor:pointer;padding:10px;-webkit-tap-highlight-color:transparent}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;
  transition:transform .3s ease, opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.topbar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--warm));width:0%;z-index:60;box-shadow:0 0 12px rgba(108,198,255,.6)}

/* keyboard skip link */
.skip-link{position:fixed;top:-60px;left:16px;z-index:80;background:var(--accent);color:#04060d;
  font-family:var(--head);font-weight:600;font-size:.8rem;padding:10px 16px;border-radius:8px;transition:top .2s ease}
.skip-link:focus{top:12px}

/* ---------- Scrolly stage ---------- */
.scrolly{position:relative;height:460vh}
.sticky{position:sticky;top:0;height:100vh;overflow:hidden;background:#02040a}
.stage-fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.stage-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.veil{position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(130% 100% at 50% 42%, transparent 32%, rgba(4,6,13,.62) 100%),
    linear-gradient(to top, rgba(4,6,13,.95) 0%, rgba(4,6,13,.14) 42%, rgba(4,6,13,.5) 100%);
}

/* ---------- Captions ---------- */
.cap{position:absolute;left:0;right:0;bottom:0;z-index:3;padding-bottom:12vh}
.cap .accent{width:56px;height:3px;background:linear-gradient(90deg,var(--accent),var(--warm));margin-bottom:24px}
.eyebrow{font-family:var(--head);font-weight:500;letter-spacing:.4em;text-transform:uppercase;font-size:.8rem;color:var(--accent);display:block;margin-bottom:.7em}
.cap h2{font-family:var(--head);font-weight:600;line-height:1.0;letter-spacing:-.01em;
  font-size:clamp(2.6rem,7.4vw,5.8rem);margin-bottom:.34em}
.cap h2 .q{color:var(--accent-soft)}
.cap p{font-size:clamp(1rem,1.4vw,1.2rem);color:var(--muted);max-width:56ch;font-weight:300}
.cap .stat{margin-top:26px;font-family:var(--head);letter-spacing:.18em;text-transform:uppercase;font-size:.78rem;color:var(--ink)}
.cap .stat b{color:var(--accent);font-weight:600}

/* JS-driven reveal */
.js .cap{opacity:0;transform:translateY(30px);transition:opacity .9s ease, transform .9s ease}
.js .cap.on{opacity:1;transform:none}
html:not(.js) .cap ~ .cap{display:none}

/* progress rail */
.rail{position:absolute;right:30px;top:50%;transform:translateY(-50%);z-index:4;width:2px;height:150px;background:rgba(255,255,255,.14);border-radius:2px;overflow:hidden}
.rail i{position:absolute;left:0;top:0;width:100%;height:0%;background:linear-gradient(var(--accent),var(--warm));border-radius:2px}
html:not(.js) .rail{display:none}

.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:4;
  font-family:var(--head);font-size:.7rem;letter-spacing:.34em;text-transform:uppercase;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:9px;transition:opacity .5s ease}
.scroll-hint i{width:1px;height:44px;background:linear-gradient(var(--accent),transparent);animation:pulse 2s ease infinite}
html:not(.js) .scroll-hint{display:none}
@keyframes pulse{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- Footer ---------- */
footer{background:#02040a;border-top:1px solid var(--line);padding:70px 0 46px;text-align:center}
footer .big{font-family:var(--head);font-weight:600;letter-spacing:-.01em;font-size:clamp(1.8rem,5vw,3.4rem)}
footer .big span{color:var(--accent)}
footer p{color:var(--muted);font-weight:300;font-size:.9rem;margin-top:16px}
footer .fine{margin-top:28px;font-size:.76rem;color:#59617a;letter-spacing:.03em}

/* ---------- Shared content sections ---------- */
.section{position:relative;padding:120px 0;scroll-margin-top:88px}
.scrolly{scroll-margin-top:0}
#stage{scroll-margin-top:0}
.section .wrap{position:relative;z-index:1}
.sec-head{max-width:760px;margin-bottom:64px}
.sec-head .eyebrow{margin-bottom:1em}
.section h2{font-family:var(--head);font-weight:600;line-height:1.02;letter-spacing:-.01em;
  font-size:clamp(2rem,5.2vw,3.7rem);margin-bottom:.4em}
.sec-head p{color:var(--muted);font-weight:300;font-size:clamp(1rem,1.4vw,1.18rem);max-width:56ch}

/* ---------- Mission timeline ---------- */
.timeline{list-style:none;position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(to bottom,var(--accent),rgba(108,198,255,.15) 60%,transparent);border-radius:2px}
.tl-item{position:relative;padding-bottom:46px}
.tl-item:last-child{padding-bottom:0}
.tl-node{position:absolute;left:-34px;top:5px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--accent);box-shadow:0 0 0 4px rgba(108,198,255,.12),0 0 14px rgba(108,198,255,.5)}
.tl-card{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:14px;padding:22px 26px;transition:border-color .3s ease,transform .3s ease}
.tl-card:hover{border-color:rgba(108,198,255,.4);transform:translateX(4px)}
.tl-time{font-family:var(--head);font-weight:500;letter-spacing:.22em;text-transform:uppercase;font-size:.72rem;color:var(--accent)}
.tl-card h3{font-family:var(--head);font-weight:600;font-size:1.5rem;margin:.35em 0 .3em}
.tl-card p{color:var(--muted);font-weight:300;font-size:1rem;max-width:60ch}

/* ---------- Life in orbit — stat grid ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.stat-card{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:16px;padding:30px 26px;
  transition:border-color .3s ease,transform .3s ease,background .3s ease}
.stat-card:hover{border-color:rgba(108,198,255,.4);transform:translateY(-4px);
  background:linear-gradient(180deg,rgba(108,198,255,.09),rgba(255,255,255,.015))}
.stat-card svg{width:34px;height:34px;color:var(--accent);margin-bottom:20px}
.stat-card b{display:block;font-family:var(--head);font-weight:600;font-size:2.5rem;line-height:1;color:var(--ink)}
.stat-card b i{font-style:normal;font-size:1.05rem;color:var(--accent-soft);margin-left:.24em;letter-spacing:.02em}
.stat-card span{display:block;margin-top:12px;color:var(--muted);font-weight:300;font-size:.95rem}

/* ---------- Overview effect ---------- */
.overview-sec{text-align:center;padding:150px 0}
.overview-sec .wrap{max-width:960px}
.overview-sec .eyebrow{display:block;margin-bottom:1.6em}
.overview-quote{font-family:var(--head);font-weight:500;line-height:1.22;letter-spacing:-.01em;
  font-size:clamp(1.7rem,4.3vw,3.1rem);color:var(--ink)}
.overview-quote em{font-style:normal;color:var(--accent)}
.overview-by{margin-top:34px;color:var(--muted);font-size:.92rem;letter-spacing:.04em}

/* ---------- Closing CTA ---------- */
.cta-sec{text-align:center;padding-bottom:130px}
.cta-sec .wrap{max-width:680px}
.cta-sec .eyebrow{display:block;margin-bottom:1.2em}
.cta-sec p{color:var(--muted);font-weight:300;font-size:1.06rem;margin:0 auto;max-width:52ch}
.cta-form{display:flex;gap:12px;margin:36px auto 0;max-width:480px}
.cta-form input{flex:1;min-width:0;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;
  padding:15px 18px;color:var(--ink);font-family:var(--body);font-size:1rem;transition:border-color .25s ease,background .25s ease}
.cta-form input::placeholder{color:#5a6479}
.cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(108,198,255,.08)}
.cta-form button{display:inline-flex;align-items:center;gap:9px;white-space:nowrap;cursor:pointer;
  font-family:var(--head);font-weight:600;letter-spacing:.02em;font-size:.95rem;color:#04060d;
  background:linear-gradient(120deg,var(--accent),var(--accent-soft));border:0;border-radius:12px;padding:15px 24px;
  transition:transform .2s ease,box-shadow .3s ease}
.cta-form button:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(108,198,255,.32)}
.cta-form button svg{width:18px;height:18px}
.cta-note{margin-top:18px;font-size:.85rem;color:#59617a}
.cta-note.ok{color:var(--accent-soft)}

/* ---------- Scroll reveal ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
html.js .reveal.in{opacity:1;transform:none}
html.js .stat-grid .reveal:nth-child(2),html.js .timeline .reveal:nth-child(2){transition-delay:.08s}
html.js .stat-grid .reveal:nth-child(3),html.js .timeline .reveal:nth-child(3){transition-delay:.16s}
html.js .stat-grid .reveal:nth-child(4),html.js .timeline .reveal:nth-child(4){transition-delay:.24s}
html.js .stat-grid .reveal:nth-child(5){transition-delay:.32s}
html.js .stat-grid .reveal:nth-child(6){transition-delay:.4s}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Back-to-top ---------- */
.to-top{position:fixed;right:24px;bottom:24px;z-index:70;width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;border:1px solid rgba(108,198,255,.5);
  background:linear-gradient(160deg,rgba(108,198,255,.9),rgba(108,198,255,.6));color:#04060d;
  box-shadow:0 8px 26px rgba(4,6,13,.5),0 0 18px rgba(108,198,255,.35);
  opacity:0;visibility:hidden;transform:translateY(14px) scale(.9);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,box-shadow .3s ease}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(4,6,13,.55),0 0 26px rgba(108,198,255,.6)}
.to-top svg{width:22px;height:22px}

/* ---------- Footer ---------- */
footer .wrap{position:relative;z-index:1}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:780px){
  .nav-toggle{display:flex}
  header#siteNav{padding:0 20px}
  .nav-menu{position:fixed;top:70px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;
    padding:8px 20px 20px;background:rgba(4,6,13,.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .28s ease,transform .28s ease}
  header#siteNav.open .nav-menu{transform:none;opacity:1;pointer-events:auto}
  .nav-menu a{width:100%;padding:15px 0;font-size:.9rem;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-menu a::after{display:none}
  .chapter-ind{border-left:0;padding-left:0;margin-left:0;padding-top:16px}
  .section{padding:80px 0;scroll-margin-top:80px}
  .overview-sec,.cta-sec{padding:90px 0}
  .sec-head{margin-bottom:44px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px}
  .cta-form{flex-direction:column}
  .cta-form button{justify-content:center;width:100%;padding:15px 24px}
}
@media (max-width:480px){
  header#siteNav{padding:0 16px}
  .wordmark{font-size:.9rem;letter-spacing:.36em}
  .section{padding:64px 0}
  .stat-grid{grid-template-columns:1fr}
  .stat-card{padding:24px 22px}
  .tl-card{padding:18px 20px}
  .timeline{padding-left:28px}
  .tl-node{left:-28px}
  .to-top{width:44px;height:44px;right:16px;bottom:16px}
  .to-top svg{width:19px;height:19px}
}

@media (max-width:640px){
  .cap p{max-width:none}
  .rail{display:none}
  .wrap{padding:0 20px}
}