/* ════════════════════════════════════════════════════════════
   AIreFlow Solutions — site styles (shared)
   ════════════════════════════════════════════════════════════ */

:root{
  --ink:#0A1D3D;
  --ink-2:#16294f;
  --ink-mute:#5A6675;
  --bg:#ffffff;
  --bg-soft:#F4F7FB;
  --bg-tint:#E6F2FF;
  --line:#E6EAF1;
  --line-strong:#D5DCE8;
  --blue:#007AFF;
  --blue-deep:#0059d8;
  --blue-light:#6EC3FF;
  --blue-pale:#E6F2FF;
  --accent:#0AB3FF;
  --radius:14px;
  --radius-lg:22px;
  --maxw:1320px;
  --gutter:clamp(20px,4vw,64px);

  --font-display:"Sora", ui-sans-serif, system-ui, sans-serif;
  --font-body:"Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono:"JetBrains Mono", ui-monospace, monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.5;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}

/* Layout primitives */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--blue-deep);font-weight:500;
  display:inline-flex;align-items:center;gap:8px}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;opacity:.6}
.display{font-family:var(--font-display);font-weight:700;letter-spacing:-.03em;
  line-height:1.0;color:var(--ink)}
.h-xxl{font-size:clamp(64px,11vw,180px)}
.h-xl{font-size:clamp(48px,7.4vw,108px)}
.h-lg{font-size:clamp(36px,5vw,72px)}
.h-md{font-size:clamp(28px,3vw,44px)}
.h-sm{font-size:clamp(22px,2vw,28px)}
.lede{font-size:clamp(18px,1.4vw,21px);line-height:1.55;color:var(--ink-mute);
  max-width:62ch;font-weight:400}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;
  border-radius:999px;font-weight:500;font-size:15px;letter-spacing:-.005em;
  transition:transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  border:1px solid transparent;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff;
  box-shadow:0 1px 0 rgba(255,255,255,.3) inset, 0 6px 20px -4px rgba(0,122,255,.45)}
.btn-primary:hover{background:#0067d8;
  box-shadow:0 1px 0 rgba(255,255,255,.3) inset, 0 12px 28px -4px rgba(0,122,255,.55)}
.btn-secondary{background:#fff;color:var(--ink);border-color:var(--line-strong)}
.btn-secondary:hover{border-color:var(--ink);background:#fff}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{color:var(--blue-deep)}
.btn .arrow{font-size:17px;transition:transform .2s}
.btn:hover .arrow{transform:translateX(3px)}

/* Top nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.78);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s, background .25s}
.nav.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.92)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);
  font-weight:700;font-size:20px;letter-spacing:-.015em;color:var(--ink)}
.brand .mark{width:36px;height:36px}
.brand img{flex-shrink:0}
.brand .ai-blue{color:var(--blue)}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-text .sol{font-family:var(--font-body);font-size:9.5px;
  letter-spacing:.34em;color:var(--ink-mute);font-weight:500;
  margin-top:3px;border-top:1px solid var(--line-strong);padding-top:3px;width:fit-content}
.nav-links{display:flex;gap:32px;font-size:15px;color:var(--ink);font-weight:450}
.nav-links a{position:relative;padding:8px 0;transition:color .15s}
.nav-links a:hover{color:var(--blue-deep)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;
  height:2px;background:var(--blue);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:14px}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line-strong);
  border-radius:10px;background:#fff;align-items:center;justify-content:center}
.menu-toggle svg{width:18px;height:18px}

/* ── Scroll reveal ─────────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(28px);
  transition:opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}
.reveal-d1{transition-delay:.06s}
.reveal-d2{transition-delay:.14s}
.reveal-d3{transition-delay:.22s}
.reveal-d4{transition-delay:.30s}
.reveal-d5{transition-delay:.38s}

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

/* ── Sections ─────────────────────────────────────────────── */
.section{padding:140px 0;position:relative}
.section-head{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:end;
  margin-bottom:72px}
.section-head h2{margin:18px 0 0}
.section-head p{margin:0;color:var(--ink-mute);font-size:18px;line-height:1.55;max-width:60ch}

/* ── Footer ──────────────────────────────────────────────── */
footer{background:#fff;border-top:1px solid var(--line);padding:80px 0 44px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:48px;margin-bottom:56px}
.foot-grid h6{font-family:var(--font-display);font-size:13px;letter-spacing:.04em;
  margin:0 0 18px;color:var(--ink);font-weight:600}
.foot-grid ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px}
.foot-grid a{color:var(--ink-mute);font-size:14px;transition:color .15s}
.foot-grid a:hover{color:var(--blue-deep)}
.foot-brand p{color:var(--ink-mute);font-size:14px;margin:16px 0 22px;max-width:34ch;line-height:1.55}
.foot-bottom{display:flex;justify-content:space-between;padding-top:32px;
  border-top:1px solid var(--line);font-size:13px;color:var(--ink-mute);flex-wrap:wrap;gap:16px}
.social{display:flex;gap:10px}
.social a{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;
  display:grid;place-items:center;color:var(--ink-mute);transition:color .15s, border-color .15s}
.social a:hover{color:var(--blue);border-color:var(--blue)}

/* ── Big CTA ─────────────────────────────────────────────── */
.bigcta{position:relative;padding:140px var(--gutter);text-align:center;overflow:hidden;
  background:radial-gradient(80% 100% at 50% 0%, #cfe5ff 0%, transparent 70%),
            linear-gradient(180deg,#fff 0%, var(--bg-soft) 100%);
  isolation:isolate}
.bigcta::after{content:"";position:absolute;inset:auto 0 -50% 0;height:90%;z-index:-1;
  background:radial-gradient(closest-side, rgba(0,122,255,.18), transparent 70%);
  filter:blur(60px);pointer-events:none}
.bigcta h2{margin:0 auto 24px;max-width:18ch}
.bigcta p{max-width:54ch;margin:0 auto 40px;font-size:19px;color:var(--ink-mute);line-height:1.55}
.bigcta .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ── Page intro (inner pages) ─────────────────────────── */
.page-intro{padding:120px 0 80px;position:relative;overflow:hidden}
.page-intro .crumb{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-mute);margin-bottom:22px}
.page-intro .crumb a{color:var(--blue-deep)}
.page-intro h1{margin:0 0 24px;max-width:14ch}
.page-intro .lede{max-width:54ch;font-size:clamp(20px,1.6vw,24px)}
.page-intro::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg, rgba(230,242,255,.6), transparent 70%)}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width:1100px){
  .section{padding:96px 0}
  .section-head{grid-template-columns:1fr;gap:24px;margin-bottom:48px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:680px){
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .nav-cta .btn-ghost{display:none}
  .bigcta{padding:96px var(--gutter)}
  .page-intro{padding:80px 0 56px}
}