/* ============================================================
   TRAIY — Brand Stylesheet
   Predictive Systems. Human Impact.
   Shares its typographic DNA (Fraunces + IBM Plex) with the
   Influence Science / Influentia site, recolored to the Traiy
   Deep Navy + Metallic Silver brand system.
   ============================================================ */

:root{
  --navy-dark:#070F22;
  --navy:#0B1B3A;
  --navy-2:#13294F;
  --panel:#0F2042;
  --silver:#C4C9D4;
  --silver-soft:#A8B0C6;
  --silver-dim:#6E7894;
  --accent:#7FA3E0;        /* steel-blue accent, used sparingly */
  --line:rgba(196,201,212,.14);
  --line-strong:rgba(196,201,212,.28);
  --maxw:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--navy);
  color:var(--silver-soft);
  font-family:"IBM Plex Sans",system-ui,sans-serif;
  font-weight:300;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

.mono{font-family:"IBM Plex Mono",monospace;font-weight:400;letter-spacing:.18em;text-transform:uppercase;font-size:.7rem;color:var(--accent)}
.eyebrow{display:inline-flex;align-items:center;gap:.7em}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:inline-block}

h1,h2,h3{font-family:"Fraunces",serif;letter-spacing:-.01em;color:var(--silver)}
em{font-style:italic;color:var(--accent)}

/* ---------- Decorative grid background (Traiy signature) ---------- */
.grid-bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(80% 70% at 60% 30%, #000 40%, transparent 90%);
          mask-image:radial-gradient(80% 70% at 60% 30%, #000 40%, transparent 90%);
  pointer-events:none;
  opacity:.5;
}
.glow{
  position:absolute;inset:0;
  background:
    radial-gradient(55% 50% at 78% 15%, rgba(127,163,224,.14), transparent 70%),
    radial-gradient(50% 60% at 10% 95%, rgba(196,201,212,.06), transparent 70%);
  pointer-events:none;
}

/* ---------- Nav ---------- */
nav{
  position:sticky;top:0;z-index:50;
  background:rgba(11,27,58,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
nav .wrap{display:flex;align-items:center;justify-content:space-between;padding:18px 32px}
nav .logo img{height:30px;width:auto}
nav ul{display:flex;gap:2.4rem;list-style:none}
nav ul a{font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--silver-soft);transition:color .25s}
nav ul a:hover,nav ul a.active{color:var(--accent)}
nav .cta{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--line-strong);padding:.6rem 1.1rem;border-radius:2px;color:var(--silver);
  transition:border-color .25s,color .25s;
}
nav .cta:hover{border-color:var(--accent);color:var(--accent)}
.nav-toggle{display:none}

/* ---------- Hero ---------- */
header.hero{position:relative;padding:7rem 0 6rem;border-bottom:1px solid var(--line);overflow:hidden}
header.hero .wrap{position:relative}
.hero-logo{max-width:420px;width:60%;margin-bottom:2.4rem}
.lede{
  font-family:"Fraunces",serif;font-weight:300;
  font-size:clamp(1.3rem,2.8vw,1.95rem);
  line-height:1.4;max-width:34ch;color:var(--silver);
}
.lede b{color:var(--accent);font-weight:400}
.hero-tags{margin-top:2rem;display:flex;gap:1.6rem;flex-wrap:wrap}
.hero-tags span{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--silver-dim)}

/* ---------- Section shell ---------- */
section{padding:6rem 0;border-bottom:1px solid var(--line)}
section.tight{padding:4rem 0}
.label-row{margin-bottom:2.6rem}

/* ---------- Manifesto / lede blocks ---------- */
.manifesto p{
  font-family:"Fraunces",serif;font-weight:300;
  font-size:clamp(1.3rem,2.6vw,1.9rem);line-height:1.45;letter-spacing:-.005em;max-width:30ch;
}
.manifesto p + p{margin-top:1.4rem;max-width:46ch;font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--silver-soft)}
.manifesto b{color:var(--accent);font-weight:400}

/* ---------- Loop diagram section ---------- */
.layers-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:1rem;margin-bottom:3rem}
.layers-head h2{font-weight:400;font-size:clamp(1.7rem,3.6vw,2.6rem)}
.loop-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3.5rem;align-items:center}
.layer{padding:1.7rem 0;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;gap:1.6rem}
.layer:last-child{border-bottom:1px solid var(--line)}
.layer .num{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:.92rem;padding-top:.4rem}
.layer h3{font-weight:500;font-size:1.4rem;margin-bottom:.45rem}
.layer p{color:var(--silver-soft);max-width:46ch;font-size:.98rem}
.loop{position:sticky;top:6.5rem}
.loop svg{width:100%;height:auto;overflow:visible}
.loop .node-l{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;fill:var(--silver);text-transform:uppercase}
.loop .core{font-family:"IBM Plex Mono",monospace;font-size:9.5px;letter-spacing:.18em;fill:var(--accent)}
.loop .arc{fill:none;stroke:var(--silver-dim);stroke-width:1.3;opacity:.6}
.loop .dot{fill:var(--navy);stroke:var(--accent);stroke-width:1.5}
.dash{stroke-dasharray:5 6}

/* ---------- Cards (services) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.card{background:var(--navy);padding:2.2rem 2rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .25s}
.card:hover{background:var(--panel)}
.card .num{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:.78rem;letter-spacing:.1em}
.card h3{font-size:1.25rem;font-weight:500;margin:.9rem 0 .7rem}
.card p{font-size:.94rem;color:var(--silver-soft)}

/* ---------- Founder / about teaser ---------- */
.founder{display:grid;grid-template-columns:auto 1fr;gap:3rem;align-items:start}
.crest{
  width:108px;height:108px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;font-family:"Fraunces",serif;font-size:2.1rem;color:var(--accent);flex-shrink:0;overflow:hidden;
}
.crest img{width:62%}
.founder h3{font-weight:500;font-size:1.7rem;margin-bottom:.2rem}
.founder .role{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:1.2rem}
.founder p{max-width:62ch;color:var(--silver-soft);font-size:1rem}
.founder p+p{margin-top:1rem}

/* ---------- Stat strip ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:2rem}
.stat .n{font-family:"Fraunces",serif;font-size:clamp(2rem,4vw,2.8rem);color:var(--silver)}
.stat .l{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--silver-dim);margin-top:.4rem}

/* ---------- CTA strip ---------- */
.cta-strip{text-align:center;padding:6rem 0}
.cta-strip p{font-family:"Fraunces",serif;font-weight:300;font-size:clamp(1.5rem,3.4vw,2.4rem);max-width:20ch;margin:1rem auto 2.2rem}
.btn{
  display:inline-block;font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  border:1px solid var(--line-strong);padding:1rem 2rem;border-radius:2px;color:var(--silver);transition:.25s;
}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.solid{background:var(--silver);color:var(--navy);border-color:var(--silver)}
.btn.solid:hover{background:var(--accent);border-color:var(--accent);color:var(--navy)}

/* ---------- Form ---------- */
form .field{margin-bottom:1.4rem}
form label{display:block;font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--silver-dim);margin-bottom:.5rem}
form input,form textarea{
  width:100%;background:transparent;border:1px solid var(--line-strong);color:var(--silver);
  padding:.85rem 1rem;font-family:"IBM Plex Sans",sans-serif;font-size:.95rem;border-radius:2px;
}
form input:focus,form textarea:focus{outline:none;border-color:var(--accent)}
form button{cursor:pointer}

/* ---------- Footer ---------- */
footer{padding:4rem 0}
.foot-grid{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem}
.foot-logo img{height:20px}
.foot-mono{color:var(--silver-dim);font-size:.66rem}
footer ul{display:flex;gap:1.6rem;list-style:none}
footer ul a{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--silver-dim)}
footer ul a:hover{color:var(--accent)}
.foot-legal{margin-top:1.6rem;padding-top:1.6rem;border-top:1px solid var(--line);display:flex;gap:1.6rem;flex-wrap:wrap}
.foot-legal a{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--silver-dim)}
.foot-legal a:hover{color:var(--accent)}

/* ---------- Skip link (accessibility) ---------- */
.sr-only-focusable{
  position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
  background:var(--silver);color:var(--navy);padding:.8rem 1.4rem;border-radius:2px;
  font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.04em;z-index:999;
}
.sr-only-focusable:focus{left:1rem;top:1rem;width:auto;height:auto;outline:2px solid var(--accent);outline-offset:2px}

/* ---------- Consent checkbox (privacy) ---------- */
.consent{display:flex;align-items:flex-start;gap:.7rem}
.consent input[type="checkbox"]{width:auto;flex-shrink:0;margin-top:.3rem;accent-color:var(--accent)}
.consent label{font-family:"IBM Plex Sans",sans-serif;text-transform:none;letter-spacing:0;font-size:.85rem;color:var(--silver-soft);margin-bottom:0}
.consent a{color:var(--accent)}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- Responsive ---------- */
@media (max-width:760px){
  nav ul,nav .cta{display:none}
  header.hero{padding:5rem 0 3.5rem}
  .loop-grid{grid-template-columns:1fr;gap:2.2rem}
  .loop{order:-1;max-width:300px;margin:0 auto;position:static}
  .founder{grid-template-columns:1fr;gap:1.4rem}
  section{padding:4rem 0}
  .foot-grid{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}