/* Spher8 — Creative Technology & Instrument Design
   Standalone stylesheet. No frameworks, no build step. */

*,*::before,*::after{box-sizing:border-box}

:root{
  --void:hsl(240 8% 3%);
  --slate:hsl(240 5% 7%);
  --ice:hsl(240 10% 96%);
  --cyan:hsl(193 62% 60%);
  --hud-green:#69cda6;
  --hud-cyan:#75ccd9;
  --line:rgba(255,255,255,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--void);color:var(--ice);
  font-family:"Inter Tight",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;font-weight:300;text-wrap:balance}
p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:768px){.wrap{padding:0 40px}}

.skip{position:absolute;left:-9999px}
.skip:focus{left:24px;top:14px;z-index:100;background:var(--ice);color:var(--void);padding:10px 18px;border-radius:999px;font-size:13px}

.brand{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-weight:700;letter-spacing:-.012em;
  background-image:linear-gradient(to right,#ffffff,#bfdbfe);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  -webkit-text-fill-color:transparent;
}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;border-bottom:1px solid transparent;
  transition:background-color .5s var(--ease),border-color .5s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(7,7,8,.82);backdrop-filter:blur(20px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.header-brand{font-size:19px}
.header-nav{display:flex;align-items:center;gap:clamp(14px,3vw,36px)}
.header-nav a{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(244,244,247,.75);transition:color .3s var(--ease);
}
.header-nav a:hover{color:var(--ice)}

/* ---------- shared ---------- */
.eyebrow{
  display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:rgba(244,244,247,.8);
}
.eyebrow .rule{width:32px;height:1px;background:hsl(193 62% 60% / .6);flex:none}
.eyebrow--center{justify-content:center}
.section{position:relative;padding:clamp(96px,14vh,180px) 0;border-top:1px solid var(--line)}
.section--slate{background:var(--slate)}
.h2{font-size:clamp(1.9rem,3.6vw,3rem);line-height:1.08;letter-spacing:-.035em;margin-top:26px;max-width:24ch}
.lead{
  margin-top:26px;font-size:clamp(1.05rem,1.5vw,1.25rem);line-height:1.65;
  color:rgba(244,244,247,.85);max-width:38rem;
}
.lead--center{margin-left:auto;margin-right:auto;text-align:center;max-width:34rem;color:rgba(244,244,247,.88)}

/* ---------- hero ---------- */
.hero{position:relative;display:flex;align-items:center;overflow:hidden;min-height:88svh;padding:150px 0 110px}

.hero-backdrop{position:absolute;inset:14% -7% 9% 47%;pointer-events:none;color:var(--hud-cyan);opacity:.78;mask-image:linear-gradient(90deg,transparent,#000 16%,#000 86%,transparent)}
.hero-backdrop svg{display:block;width:100%;height:100%;overflow:hidden}
.signal-grid{stroke:var(--ice);stroke-opacity:.065;stroke-width:1;fill:none}
.signal-measures{stroke:var(--ice);stroke-opacity:.15;stroke-width:1;fill:none}
.signal-note{fill:var(--hud-green);fill-opacity:.36;stroke:var(--hud-green);stroke-opacity:.7;stroke-width:1}
.signal-wave{fill:none;stroke:var(--hud-cyan);stroke-width:1.3;stroke-opacity:.65}
.signal-baseline{stroke:var(--hud-cyan);stroke-width:1;stroke-opacity:.12}
.signal-playhead{stroke:var(--hud-green);stroke-width:1;stroke-opacity:.7;animation:spher8-phrase 18s linear infinite}
@keyframes spher8-phrase{0%{transform:translateX(0);opacity:0}5%{opacity:.7}95%{opacity:.7}100%{transform:translateX(512px);opacity:0}}
@media(max-width:640px){.hero-backdrop{inset:20% -45% 2% 35%;opacity:.3}}
@media(prefers-reduced-motion:reduce){.signal-playhead{animation:none;transform:translateX(192px)}}

.hero-inner{position:relative;z-index:2}
.hero-brand{font-size:clamp(2rem,4vw,3rem);line-height:1}
.hero .eyebrow{margin-top:36px}
.hero h1{font-size:clamp(2.25rem,4.8vw,3.75rem);line-height:1.04;letter-spacing:-.04em;max-width:18ch;margin-top:22px}
.hero-lead{
  margin-top:26px;font-size:clamp(1.05rem,1.5vw,1.3rem);line-height:1.6;
  color:rgba(244,244,247,.82);max-width:32rem;
}

/* ---------- flagship ---------- */
.flagship{text-align:center}
.flagship .wrap{position:relative;z-index:2}
.glow{
  position:absolute;left:50%;top:28%;width:min(1000px,115vw);height:460px;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,hsl(193 62% 60% / .12),transparent);filter:blur(70px);pointer-events:none;
}
.atrium-wordmark{width:min(78vw,600px);margin:40px auto 0}
.flagship-title{
  font-size:clamp(1.9rem,4vw,3.2rem);line-height:1.1;letter-spacing:.12em;
  text-transform:uppercase;margin-top:34px;
}
.categories{
  margin-top:30px;font-family:var(--mono);font-size:12px;font-weight:700;
  letter-spacing:.26em;text-transform:uppercase;color:var(--ice);
}
.btn{
  display:inline-flex;align-items:center;gap:10px;margin-top:46px;padding:16px 34px;border-radius:999px;
  background:var(--ice);color:var(--void);font-size:14px;font-weight:500;
  transition:background-color .3s var(--ease),transform .3s var(--ease);
}
.btn:hover{background:#fff;transform:translateY(-1px)}
.btn .arrow{transition:transform .3s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.studio{margin:clamp(56px,9vh,104px) auto 0;max-width:1200px}
.studio-frame{
  position:relative;border:1px solid rgba(255,255,255,.1);border-radius:14px;overflow:hidden;
  box-shadow:0 50px 120px -40px rgba(0,0,0,.9);
}
.studio figcaption{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:20px;
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;
  color:rgba(244,244,247,.75);
}

/* ---------- explorations ---------- */
.grid{
  display:grid;gap:1px;margin-top:56px;background:var(--line);
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
@media(min-width:820px){.grid{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--slate);padding:34px 30px}
.section--slate .card{background:var(--void)}
.card h3{font-size:1.05rem;font-weight:500;letter-spacing:-.01em}
.card p{margin-top:14px;font-size:.95rem;line-height:1.65;color:rgba(244,244,247,.75)}

/* ---------- about ---------- */
.about{display:grid;gap:34px}
@media(min-width:900px){.about{grid-template-columns:230px 1fr;gap:64px}}
.about h2{font-size:clamp(1.9rem,3.4vw,2.9rem);line-height:1.1;letter-spacing:-.03em}
.about-body p{margin-top:22px;font-size:1.02rem;line-height:1.75;color:rgba(244,244,247,.82);max-width:44rem}
.about-body p:first-of-type{
  margin-top:30px;font-size:clamp(1.05rem,1.5vw,1.25rem);line-height:1.65;color:rgba(244,244,247,.9);
}
.about-body p.founder-role{
  margin-top:16px;font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:rgba(244,244,247,.68);
}
.profile-link{
  display:inline-flex;align-items:center;gap:9px;margin-top:34px;padding-bottom:6px;
  border-bottom:1px solid rgba(255,255,255,.22);font-family:var(--mono);font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--ice);
  transition:border-color .3s var(--ease),color .3s var(--ease);
}
.profile-link:hover{border-color:var(--hud-cyan);color:var(--hud-cyan)}
.profile-link .arrow{transition:transform .3s var(--ease)}
.profile-link:hover .arrow{transform:translate(3px,-3px)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:64px 0 48px}
.footer-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:36px}
.footer-brand{font-size:18px}
.footer-note{margin-top:14px;font-size:.9rem;color:rgba(244,244,247,.7)}
.footer-nav{
  display:flex;flex-wrap:wrap;gap:26px;font-family:var(--mono);font-size:11px;
  letter-spacing:.2em;text-transform:uppercase;color:rgba(244,244,247,.7);
}
.footer-nav a{transition:color .3s var(--ease)}
.footer-nav a:hover{color:var(--ice)}
.footer-copy{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(244,244,247,.6);
}

/* ---------- motion ---------- */
html.js .reveal{opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
html.js .reveal.is-in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}