:root{
  /* dark theme (default) */
  --bg:#0a0a0b;
  --bg-soft:#111113;
  --fg:#f3f3f1;
  --fg-dim:#a5a5aa;
  --line:rgba(243,243,241,0.14);
  --silver-1:#c9ccd1;
  --silver-2:#f1f2f3;

  /* fixed brand constants — do NOT flip with theme */
  --neon:#39ff14;
  --neon-ink:#08110a;

  /* All three faces are SIL Open Font License. */
  --font-display:'Bricolage Grotesque',sans-serif;
  --font-body:'Public Sans',sans-serif;
  --font-pixel:'Press Start 2P',monospace;
  --container:1180px;
  --pad:clamp(1.25rem,4vw,4rem);
  --nav-h:64px;
}

:root[data-theme="light"]{
  --bg:#f5f5f3;
  --bg-soft:#ffffff;
  --fg:#101012;
  --fg-dim:#5c5c61;
  --line:rgba(16,16,18,0.12);
  --silver-1:#8a8d92;
  --silver-2:#17171a;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  transition:background 0.3s ease,color 0.3s ease;
  overflow-x:hidden;
}
body.is-loading{overflow:hidden;height:100vh;}

h1,h2,h3{font-family:var(--font-display);font-weight:700;margin:0;letter-spacing:-0.02em;line-height:1.02;}
p{margin:0;color:var(--fg-dim);}
a{color:inherit;}
img,svg{display:block;max-width:100%;}
button{font-family:inherit;}

.container{max-width:var(--container);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}
section[id]{scroll-margin-top:var(--nav-h);}

/* Persistent 3D studio — fixed behind everything, visible through every
   transparent section. Only .neon and .contact are solid, which is how
   the studio "ends". */
#studioCanvas{position:fixed;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none;}
main{position:relative;z-index:1;}

/* ---------- Preloader ---------- */
#preloader{
  position:fixed;inset:0;z-index:200;background:var(--bg);
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:1.1rem;
}
.preloader-default{display:flex;flex-direction:column;align-items:center;gap:1.1rem;}
.preloader-ring{width:64px;height:64px;transform:rotate(-90deg);}
.preloader-ring-track{fill:none;stroke:var(--line);stroke-width:2;}
.preloader-ring-progress{fill:none;stroke:var(--silver-1);stroke-width:2;stroke-linecap:round;}
.preloader-word{font-family:var(--font-display);font-size:0.72rem;font-weight:600;letter-spacing:0.14em;color:var(--fg-dim);}
.preloader-media{max-width:min(70vw,320px);max-height:40vh;}

/* ---------- Nav (structure unchanged) ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  padding:0 var(--pad);
  display:flex;align-items:center;justify-content:space-between;
  background:transparent;border-bottom:1px solid transparent;
  transition:background 0.4s ease,border-color 0.4s ease;
}
.nav--solid{background:color-mix(in srgb, var(--bg) 88%, transparent);backdrop-filter:blur(10px);border-bottom-color:var(--line);}
.nav-logo{display:block;line-height:0;}
.nav-logo img{height:20px;width:auto;}
.logo-light{display:none;}
[data-theme="light"] .logo-dark{display:none;}
[data-theme="light"] .logo-light{display:block;}
.nav-right{display:flex;align-items:center;gap:0.75rem;}
.nav-links{display:flex;align-items:center;gap:1.6rem;}
.nav-links a{text-decoration:none;font-size:0.86rem;color:var(--fg-dim);transition:color 0.2s ease;white-space:nowrap;}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--fg);}
.nav-cta{color:var(--bg) !important;background:var(--silver-2);padding:0.5rem 1rem;border:1px solid var(--silver-2);}
.nav-cta:hover{background:transparent;color:var(--fg) !important;}
.theme-toggle{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line);background:none;
  color:var(--fg);cursor:pointer;padding:0;flex-shrink:0;
}
.theme-toggle svg{width:16px;height:16px;}
.theme-toggle .icon-sun{display:none;}
[data-theme="light"] .theme-toggle .icon-sun{display:block;}
[data-theme="light"] .theme-toggle .icon-moon{display:none;}
.nav-toggle{
  display:none;width:40px;height:40px;background:none;border:1px solid var(--line);
  cursor:pointer;padding:0;flex-shrink:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:16px;height:1px;background:var(--fg);}

/* ---------- Hero — big type ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;background:transparent;}
.hero-copy{
  position:relative;z-index:2;width:100%;max-width:min(1240px,94vw);
  padding:0 var(--pad) clamp(3.5rem,10vh,7rem);perspective:1200px;
}
.hero-title{font-size:clamp(3rem,9.6vw,7.6rem);}
.hero-title .line{display:block;overflow:hidden;}
.hero-title .line > span{display:block;}
.hero-sub{margin-top:1.25rem;max-width:34ch;font-size:clamp(1rem,2.2vw,1.2rem);}
.btn-primary{
  display:inline-block;margin-top:2rem;width:fit-content;
  padding:0.9rem 1.7rem;border:1px solid var(--silver-1);
  text-decoration:none;color:var(--fg);font-size:0.95rem;font-weight:500;
  transition:background 0.25s ease,color 0.25s ease;
}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--silver-2);color:var(--bg);}
.hero-scroll-cue{
  position:absolute;left:var(--pad);top:calc(var(--nav-h) + 1.5rem);z-index:2;
  display:flex;align-items:center;gap:0.6rem;font-size:0.72rem;color:var(--fg-dim);letter-spacing:0.08em;
}
.hero-scroll-cue span{width:1px;height:24px;background:var(--fg-dim);display:block;}

/* ---------- Section shell — transparent, generous, big type ---------- */
section{ padding: clamp(4rem, 8vh, 6rem) 0; background: transparent; }
.section-head{margin-bottom:clamp(2.5rem,6vw,4rem);max-width:800px;perspective:1200px;}
.section-head h2{font-size:clamp(2.1rem,6.5vw,4.5rem);}
.section-head p{margin-top:1rem;font-size:clamp(0.95rem,2vw,1.1rem);max-width:46ch;}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:center;}
.about-media {
  aspect-ratio: 16/10;
  clip-path: inset(0 0 100% 0);
  /* Update: centres the SVG and stops a square image from growing the box
     taller than 16/10, which was adding dead space under the section.
     To revert, delete the three lines below. */
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-media img{width:80%;height:100%;object-fit:contain;margin:auto;}
.about-text{perspective:1200px;}
.about-text h2{font-size:clamp(2rem,5.5vw,3.6rem);}
.about-text p{margin-top:1.25rem;font-size:clamp(1rem,2vw,1.15rem);max-width:40ch;}

/* ---------- Capabilities — big numbered rows, no panel behind them ---------- */
.cap-list{border-top:1px solid var(--line);perspective:1400px;}
.cap-row{
  display:grid;grid-template-columns:auto 1fr;gap:clamp(1rem,3vw,2.5rem);align-items:baseline;
  padding:clamp(1.75rem,4vw,2.75rem) 0;border-bottom:1px solid var(--line);
  transform-style:preserve-3d;
}
.cap-index{font-family:var(--font-pixel);font-size:0.65rem;color:var(--fg-dim);padding-top:0.6rem;}
.cap-row h3{font-size:clamp(1.9rem,5.5vw,3.4rem);}
.cap-row p{margin-top:0.5rem;font-size:clamp(0.95rem,2vw,1.1rem);max-width:40ch;}

/* ---------- Use cases ---------- */
.usecase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(1.5rem,4vw,3rem);}
.usecase-tile{perspective:1200px;}
.usecase-media {
  aspect-ratio: 16/10;
  clip-path: inset(0 0 100% 0);
  /* Updated: same containment fix as .about-media above.
     To revert, delete the three lines below. */
  display: flex;
  align-items: center;
  justify-content: center;
}
.usecase-media img{width:72%;height:100%;object-fit:contain;margin:auto;}
.usecase-tile h3{margin-top:1.1rem;font-size:clamp(1.2rem,3vw,1.7rem);}
.usecase-tile p{margin-top:0.35rem;font-size:clamp(0.9rem,1.8vw,1rem);}

/* ---------- Process — no panel, no blur; the studio shows straight through ---------- */
.process-track{position:relative;padding-left:clamp(1.75rem,5vw,3rem);}
.process-line{position:absolute;left:0;top:0.5rem;bottom:0.5rem;width:1px;background:var(--line);}
.process-line-fill{position:absolute;left:0;top:0;width:1px;height:0%;background:var(--silver-1);}
.process-step{
  position:relative;
  min-height:70svh;display:flex;flex-direction:column;justify-content:center;
  padding:2rem 0;opacity:0.55;transition:opacity 0.45s ease;
}
.process-step.is-active{opacity:1;}
.process-dot{
  position:absolute;left:calc(-1 * clamp(1.75rem,5vw,3rem));top:50%;
  width:10px;height:10px;border-radius:50%;
  background:var(--bg);border:1px solid var(--silver-1);transform:translate(-4.5px,-50%);
  transition:background 0.45s ease,transform 0.45s ease;
}
.process-step.is-active .process-dot{background:var(--silver-1);transform:translate(-4.5px,-50%) scale(1.4);}
.process-tag{font-family:var(--font-pixel);font-size:0.6rem;color:var(--fg-dim);margin-bottom:1rem;}
.process-word{font-family:var(--font-display);font-size:clamp(2.6rem,10vw,6rem);}
.process-step p{margin-top:0.9rem;max-width:42ch;font-size:clamp(1rem,2.2vw,1.25rem);}

/* ---------- Neon break — full screen ---------- */
.neon{
  min-height:100svh;padding:var(--pad);
  background:var(--neon);color:var(--neon-ink);
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:clamp(2rem,6vh,3.5rem);
  background-image:
    repeating-linear-gradient(0deg, rgba(0,0,0,0.05) 0 2px, transparent 2px 4px),
    repeating-linear-gradient(90deg, rgba(0,0,0,0.05) 0 2px, transparent 2px 4px);
}
.neon-heading{
  font-family:var(--font-pixel);color:var(--neon-ink);
  font-size:clamp(1.15rem,5vw,3rem);line-height:1.8;text-transform:uppercase;
}
.neon.is-lit .neon-heading{animation:neon-flicker 1.1s steps(1,end) 1;}
/* Ensures the animation restarts from scratch each time is-lit is re-added */
.neon:not(.is-lit) .neon-heading{animation:none;}
@keyframes neon-flicker{
  0%{opacity:0;} 8%{opacity:1;} 14%{opacity:0.2;} 20%{opacity:1;}
  45%{opacity:1;} 50%{opacity:0.3;} 55%{opacity:1;} 100%{opacity:1;}
}
.neon-cue{display:flex;flex-direction:column;align-items:center;gap:0.5rem;font-family:var(--font-pixel);font-size:0.55rem;}
.neon-cue span{width:1px;height:26px;background:var(--neon-ink);display:block;}

/* ---------- Contact — solid; the studio is over ---------- */
.contact{background:var(--bg);}
.contact .container{max-width:620px;}
.contact-head h2{font-size:clamp(2.1rem,6.5vw,4rem);}
.contact-head p{margin-top:0.9rem;margin-bottom:2.5rem;font-size:clamp(0.95rem,2vw,1.1rem);}
.contact-form{display:flex;flex-direction:column;gap:1.4rem;}
.field{display:flex;flex-direction:column;gap:0.45rem;}
.field label{font-size:0.82rem;color:var(--fg-dim);}
.field input,.field textarea{
  background:transparent;border:none;border-bottom:1px solid var(--line);
  color:var(--fg);font-family:inherit;font-size:1rem;padding:0.7rem 0;resize:vertical;
}
.field input:focus-visible,.field textarea:focus-visible{outline:none;border-bottom-color:var(--silver-1);}
.contact-form .btn-primary{border:none;background:var(--silver-2);color:var(--bg);align-self:flex-start;margin-top:0.5rem;}
.contact-form .btn-primary:hover{opacity:0.85;background:var(--silver-2);color:var(--bg);}
.hidden-field{position:absolute;left:-9999px;}
.form-status{margin-top:0.4rem;font-size:0.88rem;color:var(--fg);min-height:1.2em;}

/* ---------- Footer  ---------- */
.site-footer{margin-top:4rem;padding-top:2.5rem;border-top:1px solid var(--line);text-align:center;}
.footer-heading{font-size:clamp(1.1rem,3vw,1.5rem);margin-bottom:1.5rem;}
.social-links{display:flex;gap:0.9rem;justify-content:center;margin-bottom:2.5rem;flex-wrap:wrap;}
.social-links a{
  width:44px;height:44px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--fg-dim);
  transition:color 0.2s ease,border-color 0.2s ease,transform 0.2s ease;
}
.social-links a:hover,.social-links a:focus-visible{color:var(--fg);border-color:var(--silver-1);transform:translateY(-2px);}
.social-links svg{width:17px;height:17px;}
.site-copyright {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--fg-dim);
}

/* ---------- Back to top ---------- */
.back-to-top{
  position:fixed;right:clamp(1rem,3vw,2rem);bottom:clamp(1rem,3vw,2rem);z-index:90;
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:var(--bg-soft);color:var(--fg);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity 0.3s ease,transform 0.3s ease;
}
.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.back-to-top svg{width:16px;height:16px;}

/* ---------- Long-press ripple ---------- */
.nrl-ripple{
  position:fixed;z-index:150;width:12px;height:12px;border-radius:50%;
  border:1px solid var(--silver-1);pointer-events:none;
  transform:translate(-50%,-50%) scale(0.6);opacity:0.9;
}

:focus-visible{outline:1px solid var(--silver-1);outline-offset:3px;}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .about-grid{grid-template-columns:1fr;gap:2rem;}
  .about-media{aspect-ratio:16/10;}
  .usecase-grid{grid-template-columns:1fr;}
}

@media (max-width:820px){
  .nav-links{
    position:fixed;top:0;right:0;height:100svh;width:min(82vw,340px);
    background:var(--bg-soft);flex-direction:column;align-items:flex-start;
    justify-content:center;gap:1.75rem;padding:0 2.25rem;
    transform:translateX(100%);transition:transform 0.35s ease;border-left:1px solid var(--line);
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{font-size:1.25rem;}
  .nav-toggle{display:flex;}
  .cap-row{grid-template-columns:1fr;gap:0.35rem;}
  .cap-index{padding-top:0;}
  .process-step{min-height:60svh;}
}

@media (hover:none){
  /* touch devices: no hover-dependent motion */
  .social-links a:hover{transform:none;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:0.01ms !important;transition-duration:0.01ms !important;}
  html{scroll-behavior:auto;}
  .about-media,.usecase-media{clip-path:none !important;}
  .process-step{opacity:1 !important;min-height:auto;}
}
#capabilities, 
#use-cases {
  padding-top: 1rem;
}
#about {
  padding-bottom: 4rem;
}
#capabilities .section-head,
#use-cases .section-head{
  opacity: 1 !important;
}