/* ============================================================
   Tensor Group — styles.css
   Foundation: reset, design tokens, base typography.
   Component styles are appended below the FOUNDATION block.
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  /* color */
  --bg:#0A0B0D;
  --bg-elev:#111318;
  --bg-elev-2:#161a21;
  --fg:#F5F6F7;
  --fg-muted:#A6ADB6;
  --fg-dim:#6D747E;
  --accent:#F5931E;
  --accent-soft:#FFB454;
  --accent-dim:#B96E12;
  --border:#20242B;
  --border-strong:#2C323B;

  /* type */
  --font-display:"Space Grotesk",system-ui,-apple-system,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,sans-serif;

  /* layout */
  --maxw:1120px;
  --nav-h:68px;

  /* spacing scale */
  --s-1:.5rem; --s-2:1rem; --s-3:1.5rem; --s-4:2rem;
  --s-5:3rem;  --s-6:4rem; --s-7:5rem;   --s-8:8rem;

  --radius:16px;
  --radius-sm:10px;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font-body);
  font-size:clamp(1rem,.96rem + .2vw,1.0625rem);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  line-height:1.05;
  letter-spacing:-.02em;
  font-weight:600;
  color:var(--fg);
  text-wrap:balance;
}

p{text-wrap:pretty}

a{color:inherit;text-decoration:none}

img{max-width:100%;display:block}

.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--s-3);
}

/* accessible focus */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;
  padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);
  white-space:nowrap;border:0;
}

/* skip link */
.skip-link{
  position:absolute;left:var(--s-2);top:-3rem;z-index:100;
  background:var(--accent);color:#0A0B0D;padding:.5rem .9rem;
  border-radius:8px;font-weight:600;transition:top .2s;
}
.skip-link:focus{top:var(--s-2)}

/* reduced motion */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
}

/* ============================================================
   FOUNDATION ENDS — component styles appended below
   ============================================================ */

/* ---------- shared bits ---------- */
.eyebrow{
  font-family:var(--font-display);
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  display:flex;align-items:center;gap:.7rem;
  margin-bottom:var(--s-2);
}
.eyebrow::before{
  content:"";width:26px;height:2px;background:var(--accent);
  border-radius:2px;flex:none;
}
.eyebrow--center{justify-content:center}
.eyebrow--center::before{display:none}

.section{padding-block:var(--s-7)}
/* offset sticky nav when jumping to in-page anchors */
section[id],main[id]{scroll-margin-top:calc(var(--nav-h) + 16px)}
.section--alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.015) 12% 88%,transparent)}
.section__title{
  font-size:clamp(1.75rem,1.2rem + 2.4vw,2.85rem);
  max-width:16ch;
  margin-bottom:var(--s-5);
}
.container--narrow{max-width:720px}

/* ---------- buttons ---------- */
.btn{
  --btn-fg:var(--fg);
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font-display);font-weight:600;font-size:.975rem;
  line-height:1;padding:.85rem 1.35rem;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{
  background:var(--accent);color:#0A0B0D;
  box-shadow:0 6px 24px -8px rgba(245,147,30,.55);
}
.btn--primary:hover{background:var(--accent-soft);box-shadow:0 10px 30px -8px rgba(245,147,30,.7)}
.btn--outline{border-color:var(--border-strong);color:var(--fg)}
.btn--outline:hover{border-color:var(--accent);color:var(--accent)}
.btn--ghost{color:var(--fg-muted);padding-inline:.4rem}
.btn--ghost:hover{color:var(--accent);text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.btn--lg{font-size:1.1rem;padding:1.05rem 1.8rem}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  height:var(--nav-h);display:flex;align-items:center;
  background:rgba(10,11,13,0);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.nav--scrolled{
  background:rgba(10,11,13,.72);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom-color:var(--border);
}
.nav__inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav__brand{
  display:flex;align-items:center;gap:.6rem;
  font-family:var(--font-display);font-weight:600;font-size:1.05rem;letter-spacing:-.01em;
}
.nav__brand img{width:34px;height:34px}
.nav__links{display:flex;align-items:center;gap:var(--s-4)}
.nav__links a{color:var(--fg-muted);font-size:.95rem;font-weight:500;transition:color .18s}
.nav__links a:hover{color:var(--fg)}
.nav__cta{color:var(--fg)}
.nav__cta:hover{color:var(--accent)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:calc(100svh - var(--nav-h));
  display:flex;align-items:center;
  padding-block:var(--s-7) var(--s-6);
  overflow:hidden;
}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero__veil{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 90% at 78% 20%,rgba(245,147,30,.16),transparent 55%),
    radial-gradient(100% 80% at 12% 90%,rgba(245,147,30,.06),transparent 60%),
    linear-gradient(180deg,rgba(10,11,13,.35),rgba(10,11,13,.72));
}
.hero__inner{position:relative;z-index:2;max-width:900px}
.hero__title{
  font-size:clamp(2.6rem,1.6rem + 5.2vw,5.4rem);
  font-weight:700;letter-spacing:-.03em;margin-bottom:var(--s-3);
}
.hero__sub{
  font-size:clamp(1.05rem,1rem + .5vw,1.3rem);
  color:var(--fg-muted);max-width:46ch;margin-bottom:var(--s-4);
}
.hero__actions{display:flex;align-items:center;gap:var(--s-3);flex-wrap:wrap}

/* ---------- trust bar ---------- */
.trust{border-block:1px solid var(--border);background:rgba(255,255,255,.012)}
.trust__inner{
  display:flex;align-items:center;justify-content:flex-start;gap:var(--s-3) var(--s-4);
  padding-block:var(--s-5);flex-wrap:wrap;
}
.trust__label{margin-right:var(--s-2)}
.trust__label{
  font-size:.75rem;text-transform:uppercase;letter-spacing:.16em;
  color:var(--fg-dim);font-weight:600;flex:none;
}
.trust__logos{
  list-style:none;display:flex;gap:var(--s-4);flex-wrap:wrap;
  font-family:var(--font-display);font-weight:600;
  letter-spacing:.06em;color:var(--fg-muted);font-size:1.05rem;
}
.trust__stats{
  list-style:none;display:flex;gap:var(--s-4) var(--s-5);flex-wrap:wrap;
  flex-basis:100%;margin-top:var(--s-3);
  padding-top:var(--s-3);border-top:1px solid var(--border);
}
.trust__stats li{display:flex;flex-direction:column;line-height:1.2}
.trust__stats strong{
  font-family:var(--font-display);font-size:1.35rem;font-weight:700;color:var(--fg);
}
.trust__stats span{font-size:.8rem;color:var(--fg-dim)}

/* ---------- generic grids ---------- */
.grid{display:grid;gap:var(--s-3)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}

/* ---------- service cards ---------- */
.card{
  position:relative;
  background:var(--bg-elev);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:var(--s-4) var(--s-3) var(--s-3);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--accent);background:var(--bg-elev-2)}
.card__vector{
  width:34px;height:34px;margin-bottom:var(--s-2);
  border-radius:8px;position:relative;
  background:linear-gradient(135deg,rgba(245,147,30,.22),rgba(245,147,30,.05));
  border:1px solid rgba(245,147,30,.35);
}
.card__vector::after{
  content:"→";position:absolute;inset:0;display:grid;place-items:center;
  color:var(--accent);font-weight:700;font-size:1.05rem;
  transition:transform .22s ease;
}
.card:hover .card__vector::after{transform:translateX(3px)}
.card__title{font-size:1.15rem;margin-bottom:.55rem}
.card__body{color:var(--fg-muted);font-size:.975rem}

/* ---------- work cards ---------- */
.workcard{
  background:var(--bg-elev);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:var(--s-4);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.workcard:hover{transform:translateY(-4px);border-color:var(--border-strong);background:var(--bg-elev-2)}
.workcard__top{
  display:flex;align-items:baseline;justify-content:space-between;gap:var(--s-2);
  margin-bottom:.7rem;flex-wrap:wrap;
}
.workcard__title{font-size:1.25rem}
.workcard:hover .workcard__title{color:var(--accent)}
.tag{
  flex:none;font-family:var(--font-display);font-size:.68rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.08em;color:var(--accent);
  border:1px solid rgba(245,147,30,.3);border-radius:999px;padding:.25rem .6rem;
  background:rgba(245,147,30,.06);
}
.workcard__body{color:var(--fg-muted);font-size:.975rem}

/* ---------- about prose ---------- */
.prose p{color:var(--fg-muted);font-size:1.075rem;margin-bottom:var(--s-3)}
.prose p:last-child{margin-bottom:0;color:var(--fg)}

/* ---------- contact ---------- */
.contact{
  position:relative;text-align:center;
  padding-block:var(--s-8);
  background:radial-gradient(120% 100% at 50% 0%,rgba(245,147,30,.10),transparent 60%);
  border-top:1px solid var(--border);
}
.contact__title{font-size:clamp(2.4rem,1.6rem + 4vw,4rem);margin-bottom:var(--s-2)}
.contact__sub{color:var(--fg-muted);max-width:44ch;margin:0 auto var(--s-4);font-size:1.1rem}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--border);padding-block:var(--s-4)}
.footer__inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);
  flex-wrap:wrap;padding-bottom:var(--s-2);
}
.footer__brand{display:flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-weight:600}
.footer__tag{color:var(--fg-dim);font-size:.9rem}
.footer__mail{color:var(--fg-muted);font-size:.9rem}
.footer__mail:hover{color:var(--accent)}
.footer__copy{color:var(--fg-dim);font-size:.8rem;padding-top:var(--s-2);border-top:1px solid var(--border)}

/* ---------- reveal (JS-gated: visible by default when JS is off) ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .grid--3{grid-template-columns:1fr 1fr}
  .trust__stats{margin-left:0;gap:var(--s-4)}
  .trust__inner{justify-content:flex-start}
}
@media (max-width:720px){
  :root{--s-7:4rem;--s-8:6rem}
  .grid--3,.grid--2{grid-template-columns:1fr}
  .nav__links{gap:var(--s-3)}
  .nav__links a:not(.nav__cta){display:none}
  .hero{min-height:auto;padding-block:var(--s-6)}
  .hero__title{font-size:clamp(2.3rem,1.4rem + 5vw,3.4rem);letter-spacing:-.02em}
  .hero__br{display:none}
  .section__title{max-width:none}
  .trust__stats li{flex-direction:row;align-items:baseline;gap:.5rem}
}
@media (max-width:420px){
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{width:100%}
  .btn--ghost{justify-content:center}
}