/* ClearThought.ai — enterprise-blueprint design system
   Fonts: Space Grotesk (display) + Inter (body). Sharp corners throughout. */

:root{
  --paper:#ffffff;
  --ink:oklch(0.205 0.04 257);            /* dark navy — text, primary buttons, dark band */
  --ink-2:#4a5364;                         /* secondary text */
  --ink-3:#717a8a;                         /* muted labels */
  --accent:oklch(0.623 0.214 259);         /* royal blue */
  --accent-ink:oklch(0.205 0.04 257);
  --accent-soft:#eaf0fe;                   /* light blue tint (badges, icon tiles) */
  --section:oklch(0.978 0.005 247);        /* light gray section */
  --off:oklch(0.985 0.002 247);            /* off-white on dark */
  --line:rgba(20,25,38,0.10);
  --line-soft:rgba(20,25,38,0.06);
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,'SF Mono','SFMono-Regular',Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
::selection{background:var(--accent);color:#fff}

h1,h2,h3,h4{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;color:var(--ink);letter-spacing:-0.02em;line-height:1.05}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}

.eyebrow{font-size:13px;font-weight:700;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent)}

.badge{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--accent-soft);color:var(--accent);
  font-size:12.5px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;
  padding:8px 16px;border-radius:100px;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ---------- buttons (sharp corners) ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:'Inter',sans-serif;font-size:16px;font-weight:600;
  padding:16px 32px;border:1px solid var(--ink);background:var(--ink);color:var(--off);
  transition:transform .2s var(--ease),background .2s,color .2s,border-color .2s;cursor:pointer;
}
.btn:hover{transform:translateY(-2px);background:#000;border-color:#000}
.btn.outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.outline:hover{background:var(--ink);color:var(--off);border-color:var(--ink)}
.btn.light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn.light:hover{background:#fff}
.btn.block{width:100%}
.btn.sm{padding:10px 20px;font-size:14px;font-weight:500;letter-spacing:0.025em}

.arrow-link{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-weight:600;font-size:15px;transition:gap .2s var(--ease)}
.arrow-link:hover{gap:15px}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.85);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;transition:border-color .3s}
header.nav.scrolled{border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:82px}
.brand{display:flex;align-items:center;gap:13px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:21px;letter-spacing:-0.01em}
.brand .mark{width:34px;height:34px;flex:none}
.brand .tld{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:40px}
.nav-links a{font-size:15.5px;color:var(--ink);font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:22px}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.3s}

/* ---------- generic section ---------- */
section{padding:96px 0}
.sec-light{background:var(--section)}
.sec-dark{background:var(--ink);color:var(--off)}
.sec-dark h1,.sec-dark h2,.sec-dark h3{color:#fff}

/* page hero (services/about/contact) */
.page-hero{padding:120px 0 90px;border-bottom:1px solid var(--line-soft)}
.page-hero .eyebrow{display:block;margin-bottom:22px}
.page-hero h1{font-size:clamp(40px,6vw,68px)}
.page-hero .lede{font-size:20px;color:var(--ink-2);max-width:34ch;margin-top:26px;line-height:1.5}

/* ---------- home hero ---------- */
.hero{padding:72px 0 110px}
.hero-grid{display:grid;grid-template-columns:1.08fr 0.92fr;gap:64px;align-items:stretch}
.hero-copy{display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.hero h1{font-size:clamp(46px,6.6vw,76px);margin-top:26px}
.hero h1 .b{color:var(--accent);display:block}
.hero .lede{font-size:19px;color:var(--ink-2);max-width:32ch;margin-top:28px;line-height:1.55}
.hero-actions{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}

/* architecture diagram */
.diagram-wrap{position:relative;display:flex;flex-direction:column}
.diagram{position:relative;aspect-ratio:1/0.92;border:1px solid var(--line-soft);
  background:
    radial-gradient(60% 50% at 50% 42%, rgba(59,110,244,0.16), transparent 70%),
    linear-gradient(rgba(20,25,38,0.045) 1px, transparent 1px) 0 0/100% 38px,
    linear-gradient(90deg, rgba(20,25,38,0.045) 1px, transparent 1px) 0 0/38px 100%,
    linear-gradient(180deg,#fbfcfe,#f3f6fb);
  overflow:hidden}
.diagram svg.links{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.node{position:absolute;transform:translate(-50%,-50%);background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink);padding:9px 15px;white-space:nowrap;
  box-shadow:0 6px 18px -10px rgba(20,25,38,.25);z-index:2}
.node.center{background:var(--ink);color:#fff;text-align:center;padding:14px 22px;border-color:var(--ink);font-weight:700;letter-spacing:0.02em}
.node.center .sub{display:block;color:var(--accent);font-size:11px;letter-spacing:0.16em;margin-top:2px}
.pulse{position:absolute;width:8px;height:8px;border-radius:50%;background:var(--accent);transform:translate(-50%,-50%);z-index:1}
.pulse::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--accent);animation:ping 2.4s var(--ease) infinite;opacity:.6}
@keyframes ping{0%{transform:scale(1);opacity:.6}80%,100%{transform:scale(2.6);opacity:0}}

.stat-card{position:absolute;left:6%;bottom:-34px;background:#fff;border:1px solid var(--line);
  display:flex;gap:34px;padding:22px 30px;box-shadow:0 30px 60px -28px rgba(20,30,60,.45);z-index:5}
.stat-card .n{font-family:'Space Grotesk',sans-serif;font-size:30px;font-weight:700;color:var(--accent);line-height:1}
.stat-card .l{font-size:11.5px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--ink-3);margin-top:8px}

/* ---------- imagery treatment (brand grade — drop a real photo in, the look holds) ---------- */
.media{position:relative;overflow:hidden;border:1px solid var(--line);background:var(--ink)}
.media img{width:100%;height:100%;object-fit:cover;display:block;
  filter:grayscale(.32) contrast(1.05) brightness(.97)}
/* cool navy/blue grade so every image reads as one set */
.media::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,25,38,.22),rgba(59,110,244,.12));mix-blend-mode:multiply}
/* film grain */
.media::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.4;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:140px}
.media-tag{position:absolute;z-index:3;left:0;bottom:0;background:var(--ink);color:#fff;
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;padding:9px 15px}
.media-hero{flex:1 1 auto;min-height:480px}  /* fills the column height so it always matches the copy */
.media-hero .media-tag{top:0;bottom:auto}  /* clear of the overlapping stat card */

/* ---------- services preview (home) ---------- */
.sec-head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:60px}
.sec-head-row .left{max-width:560px}
.sec-head-row h2{font-size:clamp(30px,3.6vw,40px)}
.sec-head-row p{color:var(--ink-2);font-size:17px;margin-top:18px}

.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line-soft);padding:40px;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-4px);box-shadow:0 30px 60px -36px rgba(20,30,60,.3);border-color:var(--line)}
.card .ico{width:52px;height:52px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:28px}
.card h3{font-size:24px}
.card p{color:var(--ink-2);font-size:15.5px;margin-top:14px;line-height:1.6}

/* ---------- how we work ---------- */
.split{display:grid;grid-template-columns:0.95fr 1.05fr;gap:70px;align-items:start}
.split .lead h2{font-size:clamp(30px,3.6vw,42px);margin-top:20px}
.split .lead p{color:var(--ink-2);font-size:17px;margin-top:22px;line-height:1.6}
.split .lead .arrow-link{margin-top:28px}
.steps .step{display:grid;grid-template-columns:54px 1fr;gap:22px;padding:28px 0;border-top:1px solid var(--line)}
.steps .step:first-child{border-top:none;padding-top:0}
.steps .num{font-family:'Space Grotesk',sans-serif;font-size:17px;font-weight:700;color:var(--accent)}
.steps h3{font-size:21px}
.steps p{color:var(--ink-2);font-size:15.5px;margin-top:9px;line-height:1.6}

/* how we work — intro header + image/steps grid */
.how-head{max-width:620px;margin-bottom:52px}
.how-head .eyebrow{display:block;margin-bottom:18px}
.how-head h2{font-size:clamp(30px,3.6vw,42px)}
.how-head p{color:var(--ink-2);font-size:17px;margin-top:20px;line-height:1.6}
.how-head .arrow-link{margin-top:24px}
.how-grid{display:grid;grid-template-columns:1.04fr 0.96fr;gap:60px;align-items:stretch}
.how-grid .media{min-height:380px}

/* ---------- CTA band ---------- */
.cta{position:relative;overflow:hidden;background:var(--ink);text-align:center}
.cta::before{content:"";position:absolute;inset:0;background:url(/assets/img/texture-band.jpg) center/cover no-repeat;
  opacity:.20;filter:grayscale(.4) contrast(1.05);pointer-events:none}
.cta .wrap{position:relative;z-index:1}
.cta h2{color:#fff;font-size:clamp(34px,5vw,60px)}
.cta p{color:rgba(255,255,255,.66);font-size:19px;margin:22px auto 0;max-width:44ch}
.cta .btn{margin-top:36px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:72px 0 40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand p{color:var(--ink-3);font-size:14.5px;max-width:42ch;line-height:1.6}
.foot-col h4{font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-3);font-family:'Inter',sans-serif;font-weight:700;margin-bottom:18px}
.foot-col a,.foot-col .item{display:block;font-size:15px;color:var(--ink-2);padding:6px 0;transition:color .2s}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{margin-top:56px;padding-top:26px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;letter-spacing:0.04em;color:var(--ink-3)}
.foot-bottom .copy{text-transform:uppercase}

/* ---------- services page ---------- */
.disc{display:grid;grid-template-columns:0.8fr 1.2fr;gap:60px;padding:64px 0;border-top:1px solid var(--line)}
.disc:first-of-type{border-top:none}
.disc .dnum{font-family:'Space Grotesk',sans-serif;color:var(--accent);font-size:17px;font-weight:700;margin-bottom:14px}
.disc h3{font-size:30px}
.disc .ddesc{color:var(--ink-2);font-size:16px;margin-top:16px;line-height:1.6}
.disc .deliv-label{font-size:12px;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}
.disc ul{list-style:none}
.disc ul li{display:grid;grid-template-columns:18px 1fr;gap:12px;padding:16px 0;border-top:1px solid var(--line-soft);font-size:16px;color:var(--ink)}
.disc ul li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);margin-top:8px}

.models{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.model{background:#fff;border:1px solid var(--line);padding:36px}
.model .tag{font-size:12px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.model h3{font-size:23px}
.model p{color:var(--ink-2);font-size:15.5px;margin-top:12px;line-height:1.6}

/* ---------- about page ---------- */
.about-split{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.about-split h2{font-size:30px;margin-bottom:22px}
.about-split p{color:var(--ink-2);font-size:16.5px;margin-bottom:18px;line-height:1.7}
.beliefs{display:grid;gap:0}
.belief{padding:24px 0;border-top:1px solid var(--line-soft)}
.belief:first-child{border-top:none;padding-top:0}
.belief h3{font-size:19px;margin-bottom:8px}
.belief p{color:var(--ink-2);font-size:15.5px;margin:0;line-height:1.6}
.creds{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.creds span{border:1px solid var(--line);padding:11px 18px;font-size:14px;font-weight:500;color:var(--ink)}

/* ---------- contact page ---------- */
.contact-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:64px;align-items:start}
.contact-info .block{margin-top:34px}
.contact-info .lbl{font-size:12px;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}
.contact-info .val{font-size:19px;font-weight:600;color:var(--ink)}
.contact-info a.val:hover{color:var(--accent)}
.form-card{background:var(--section);border:1px solid var(--line-soft);padding:44px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field{margin-bottom:22px}
.field label{display:block;font-size:12px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:9px}
.field input,.field textarea{width:100%;background:#fff;border:1px solid var(--line);padding:14px 16px;font-family:'Inter',sans-serif;font-size:15.5px;color:var(--ink);transition:border-color .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{min-height:130px;resize:vertical}
.form-note{text-align:center;font-size:13.5px;color:var(--ink-3);margin-top:18px}

/* reveal — progressive enhancement: fully visible without JS, animates only when .js is set */
.reveal{transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js .reveal{opacity:0;transform:translateY(20px)}
html.js .reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .hero-grid,.split,.about-split,.contact-grid,.disc,.how-grid{grid-template-columns:1fr;gap:44px}
  .cards-3,.models{grid-template-columns:1fr 1fr}
  .stat-card{position:static;margin-top:24px;display:inline-flex}
  .diagram{aspect-ratio:1/0.8}
  .media-hero{flex:none;min-height:0;aspect-ratio:16/11}
  .how-grid .media{min-height:0;aspect-ratio:16/10}
}
@media(max-width:680px){
  .wrap{padding:0 22px}
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .menu-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:82px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:20px 22px;gap:4px;align-items:flex-start}
  .nav-links.open a{padding:13px 0;width:100%;border-bottom:1px solid var(--line-soft)}
  section,.cta{padding:64px 0}
  .page-hero{padding:80px 0 60px}
  .cards-3,.models,.form-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:36px}
  .form-card{padding:28px}
}

/* ---------- a11y / motion / active nav ---------- */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.nav-links a.active{color:var(--accent)}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:200}
.skip:focus{left:12px;top:12px}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  html.js .reveal{opacity:1!important;transform:none!important}
}

/* ---------- Typeform-style conversational form ---------- */
.tf{position:relative;min-height:470px;display:flex;flex-direction:column}
.tf-progress{position:absolute;top:0;left:0;right:0;height:3px;background:var(--line-soft)}
.tf-progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .45s var(--ease)}
.tf-steps{flex:1;display:flex;align-items:center;padding:48px 2px 30px}
.tf-step{width:100%}
html.js .tf-step{display:none}
html.js .tf-step.active{display:block;animation:tfIn .45s var(--ease)}
@keyframes tfIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.tf-idx{font-family:'Space Grotesk',sans-serif;color:var(--accent);font-weight:700;font-size:14px;letter-spacing:.04em;margin-bottom:16px;text-transform:uppercase}
.tf-q{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:clamp(23px,2.8vw,29px);letter-spacing:-0.02em;line-height:1.14;margin-bottom:8px}
.tf-hint{color:var(--ink-3);font-size:15px;margin-bottom:26px}
.tf-input{width:100%;background:transparent;border:none;border-bottom:2px solid var(--line);padding:12px 2px;font-family:'Inter',sans-serif;font-size:22px;color:var(--ink);transition:border-color .2s}
.tf-input::placeholder{color:#abb1be}
.tf-input:focus{outline:none;border-bottom-color:var(--accent)}
textarea.tf-input{min-height:104px;resize:none;border:1px solid var(--line);padding:14px;font-size:18px}
textarea.tf-input:focus{border-color:var(--accent);border-bottom-width:1px}
.tf-row{display:flex;align-items:center;gap:18px;margin-top:28px;flex-wrap:wrap}
.tf-keyhint{font-size:13px;color:var(--ink-3)}
.tf-keyhint kbd{font-family:'Inter',sans-serif;background:var(--paper);border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:2px 7px;font-size:12px;color:var(--ink-2)}
.tf-err{color:#c0392b;font-size:14px;margin-top:14px;min-height:18px}
.tf-nav{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line-soft);padding-top:16px}
.tf-back{background:none;border:none;color:var(--ink-3);font-size:14px;cursor:pointer;font-family:inherit;padding:4px 0}
.tf-back:hover{color:var(--ink)}
.tf-count{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.tf-review{display:grid;gap:0;margin:18px 0 26px}
.tf-review .r{display:grid;grid-template-columns:118px 1fr;gap:14px;font-size:15px;padding:12px 0;border-top:1px solid var(--line-soft)}
.tf-review .r .k{color:var(--ink-3);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding-top:2px}
.tf-review .r .v{color:var(--ink);white-space:pre-wrap;word-break:break-word}
.tf-success{text-align:center;padding:40px 0;animation:tfIn .5s var(--ease)}
.tf-success .chk{width:62px;height:62px;margin:0 auto 22px;border:2px solid var(--accent);color:var(--accent);display:flex;align-items:center;justify-content:center}
.tf-success h3{font-size:26px;margin-bottom:10px}
.tf-success p{color:var(--ink-2);font-size:16px;max-width:34ch;margin:0 auto}
/* no-JS fallback: a plain stacked form */
html:not(.js) .tf-progress,html:not(.js) .tf-nav,html:not(.js) .tf-keyhint,html:not(.js) .tf-next,html:not(.js) .tf-idx,html:not(.js) .tf-review-step .tf-q,html:not(.js) .tf-review{display:none}
html:not(.js) .tf-steps{display:block;padding:8px 0}
html:not(.js) .tf-step{display:block;margin-bottom:26px}
@media(max-width:680px){.tf{min-height:0}.tf-steps{padding:40px 0 24px}}

/* legal pages */
.legal h2{font-size:22px;margin:34px 0 10px}
.legal h3{font-size:17px;margin:22px 0 8px}
.legal p,.legal li{color:var(--ink-2);font-size:15.5px;line-height:1.7;margin-bottom:12px}
.legal ul{padding-left:20px;margin-bottom:14px}
.legal a{color:var(--accent);text-decoration:underline}

.tf-skip{background:none;border:none;color:var(--ink-3);font-size:14px;cursor:pointer;font-family:inherit;text-decoration:underline;padding:4px 2px}
.tf-skip:hover{color:var(--ink)}