/* ==========================================================================
   ChekApp Inc. : Corporate Site Design System
   Palette: Cobalt #2962FF · Ink #0B1220 · Paper #F7F8FC · Signal Cyan #4FD1E8
   Type: Fraunces (display/editorial) + Inter (body/UI) + IBM Plex Mono (data)
   Theme: adapts automatically to the viewer's light/dark system setting
   ========================================================================== */

:root{
  --cobalt:#2962FF;
  --cobalt-dark:#1c47c4;
  --cobalt-deep:#13309e;

  /* fixed brand-dark surface: used for footer, dark hero and dark cards.
     Stays the same regardless of light/dark viewer setting */
  --ink:#0B1220;
  --ink-soft:#1a2436;

  /* adaptive surface + text tokens: redefined under prefers-color-scheme */
  --bg:#ffffff;
  --bg-alt:#F7F8FC;
  --bg-tint:#EEF2FC;
  --surface:#ffffff;
  --heading:#0B1220;
  --text:#0d1522;
  --text-soft:#5b6478;
  --text-faint:#8993a8;
  --border:#e6e9f2;
  --border-soft:#eef1f8;
  --nav-bg:rgba(255,255,255,.92);

  --signal:#3fd6c9;
  --amber:#f2a541;
  --shadow-sm:0 4px 16px rgba(15,25,60,.06);
  --shadow-md:0 16px 40px rgba(15,25,60,.10);
  --shadow-lg:0 32px 80px rgba(10,18,40,.16);
  --radius-sm:12px;
  --radius-md:20px;
  --radius-lg:32px;
  --maxw:1240px;
  color-scheme:light;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0B1220;
    --bg-alt:#0F1830;
    --bg-tint:#152040;
    --surface:#101A30;
    --heading:#F4F6FC;
    --text:#DCE1EE;
    --text-soft:#9AA4BC;
    --text-faint:#717C94;
    --border:#233052;
    --border-soft:#1B2540;
    --nav-bg:rgba(11,18,32,.86);
    --shadow-sm:0 4px 16px rgba(0,0,0,.28);
    --shadow-md:0 16px 40px rgba(0,0,0,.36);
    --shadow-lg:0 32px 80px rgba(0,0,0,.5);
    color-scheme:dark;
  }
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background .25s ease,color .25s ease;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s}
ul{list-style:none}
button{font-family:inherit}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important;}
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cobalt);
  display:none;
  align-items:center;
  gap:10px;
}
.eyebrow::before{content:'';width:22px;height:1.5px;background:var(--cobalt);display:inline-block}

.display{font-family:'Fraunces',serif;font-optical-sizing:auto;font-weight:560;letter-spacing:-.02em}

:focus-visible{outline:2.5px solid var(--cobalt);outline-offset:3px;border-radius:4px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;font-size:15.5px;padding:15px 30px;border-radius:999px;cursor:pointer;transition:.22s cubic-bezier(.2,.8,.2,1);border:none;font-family:'Inter',sans-serif;white-space:nowrap}
.btn-primary{background:var(--cobalt);color:#fff;box-shadow:0 1px 2px rgba(20,40,120,.15)}
.btn-primary:hover{background:var(--cobalt-dark);transform:translateY(-1.5px);box-shadow:0 12px 24px rgba(41,98,255,.28)}
.btn-ghost{background:transparent;color:var(--heading);border:1.5px solid var(--border);}
.btn-ghost:hover{border-color:var(--heading);background:var(--heading);color:var(--bg)}
.btn-ghost-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{padding:11px 22px;font-size:14px}

/* ---------- NAV ---------- */
header.nav{position:sticky;top:0;z-index:100;background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:21px;letter-spacing:-.3px;font-family:'Inter',sans-serif;color:var(--heading)}
.logo-img{width:32px;height:32px;border-radius:9px}
.nav-links{display:flex;align-items:center;gap:34px;font-weight:600;font-size:14.5px}
.nav-links a{color:var(--text-soft);position:relative;padding:4px 0}
.nav-links a:hover{color:var(--heading)}
.nav-links a.active{color:var(--heading)}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-27px;height:2.5px;background:var(--cobalt)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-web{font-weight:600;font-size:14.5px;color:var(--text-soft);display:flex;align-items:center;gap:6px}
.nav-web:hover{color:var(--cobalt)}
.nav-web svg{width:15px;height:15px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle svg{width:26px;height:26px;color:var(--heading)}
.mobile-menu{display:none;position:fixed;top:78px;left:0;right:0;bottom:0;height:calc(100vh - 78px);background:var(--bg);z-index:99;padding:20px 28px;overflow-y:auto}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:16px 0;font-size:19px;font-weight:700;border-bottom:1px solid var(--border-soft);color:var(--heading)}
.mobile-menu .mm-cta{margin-top:24px;display:flex;flex-direction:column;gap:12px}

@media(max-width:900px){
  .nav-links{display:none}
  .nav-web{display:none}
  .nav-toggle{display:block}
}

/* ---------- PAGE HERO (inner pages) ---------- */
.page-hero{padding:76px 0 64px;background:var(--bg-alt);border-bottom:1px solid var(--border)}
.page-hero .eyebrow{margin-bottom:22px}
.page-hero h1{font-size:56px;line-height:1.06;color:var(--heading);max-width:820px}
.page-hero p.lead{font-size:19px;color:var(--text-soft);margin-top:22px;max-width:620px;line-height:1.6}
@media(max-width:700px){
  .page-hero{padding:52px 0 40px}
  .page-hero h1{font-size:36px}
  .page-hero p.lead{font-size:17px}
}

/* ---------- SECTION UTILITIES ---------- */
.section{padding:110px 0}
.section-tight{padding:70px 0}
.section-alt{background:var(--bg-alt)}
.section-ink{background:var(--ink);color:#fff}
.center{text-align:center}
.section-head{max-width:640px;margin-bottom:64px}
.section-head.center{margin-left:auto;margin-right:auto}
.section-head h2{font-family:'Fraunces',serif;font-weight:560;letter-spacing:-.02em;font-size:42px;line-height:1.12;color:var(--heading);margin-top:18px}
.section-ink .section-head h2{color:#fff}
.section-head p{font-size:18px;color:var(--text-soft);margin-top:18px;line-height:1.6}
.section-ink .section-head p{color:#aab4cc}
@media(max-width:700px){
  .section{padding:70px 0}
  .section-head h2{font-size:30px}
}

/* ---------- STAT GRID ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}
.stat-cell{background:var(--surface);padding:38px 30px}
.stat-num{font-family:'Fraunces',serif;font-weight:600;font-size:44px;color:var(--cobalt);letter-spacing:-.02em}
.stat-label{font-size:14px;color:var(--text-soft);margin-top:8px;line-height:1.5}
@media(max-width:900px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.stat-num{font-size:34px}}

/* ---------- CARD ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:36px;transition:.25s}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:transparent}
.card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--heading)}
.card p{color:var(--text-soft);font-size:15.5px;line-height:1.6}
.card .icon-badge{width:46px;height:46px;border-radius:13px;background:var(--bg-tint);display:grid;place-items:center;margin-bottom:20px;color:var(--cobalt)}
.card .icon-badge svg{width:23px;height:23px}

/* ---------- FOOTER (fixed dark, both themes) ---------- */
footer{background:var(--ink);color:#fff;padding:90px 0 40px;font-size:15px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:40px}
.foot-brand .logo{color:#fff}
.foot-brand p{margin-top:20px;max-width:280px;color:#8a93ab;line-height:1.6}
.foot-social{display:flex;gap:12px;margin-top:24px}
.foot-social a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.06);display:grid;place-items:center;border:1px solid rgba(255,255,255,.08)}
.foot-social a:hover{background:var(--cobalt);border-color:var(--cobalt)}
.foot-social svg{width:16px;height:16px}
.foot-col h4{color:#fff;font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;margin-bottom:24px;font-family:'IBM Plex Mono',monospace}
.foot-col a,.foot-col .fc-line{display:block;margin-bottom:15px;color:#9099b3}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:64px;padding-top:30px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;color:#7d869e;font-size:13.5px}
.foot-bottom .legal{display:flex;gap:18px;flex-wrap:wrap}
@media(max-width:960px){.foot-grid{grid-template-columns:1fr 1fr;gap:48px}}
@media(max-width:600px){.foot-grid{grid-template-columns:1fr}}

/* ---------- MISC ---------- */
.divider-dots{display:flex;align-items:center;gap:8px;justify-content:center;margin:0 auto}
.divider-dots span{width:4px;height:4px;border-radius:50%;background:var(--border)}
.tag{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;padding:7px 14px;border-radius:999px;background:var(--bg-tint);color:var(--cobalt-deep)}
.mono{font-family:'IBM Plex Mono',monospace}

.pill-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:56px}
.pill-nav a{padding:10px 18px;border-radius:999px;border:1px solid var(--border);font-size:14px;font-weight:600;color:var(--text-soft)}
.pill-nav a:hover, .pill-nav a.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* subtle rise-in on scroll; content stays visible even if JS never fires */
.reveal{opacity:1;transform:translateY(16px);transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{transform:translateY(0)}

/* theme-aware image dimming so photography doesn't glare in dark mode */
@media (prefers-color-scheme: dark){
  .pb-visual img,.feat-img img,.founder-photo img,.global-img img{filter:brightness(.92)}
}