/* ===== Accessible theme tokens ===== */
:root{
  /* Base */
  --bg:#ffffff; --text:#0b1220;
  --muted:#475467; /* darker for AA on white */

  /* Brand accent (general UI) */
  --primary:#2563EB;           /* deeper blue */
  --primary-600:#1D4ED8;
  --primary-50:#eaf2ff;
  --accent:#00C2A8; --accent-600:#059686; --violet:#8B5CF6;

  /* Surfaces */
  --border:#d7dee8;
  --card-bg:#ffffff; --card-fg:#0b1220; --card-border:#d7dee8;

  /* Header (light) */
  --header-bg: rgba(255,255,255,.98);
  --header-fg: #0b1220;
  --header-border:#d7dee8;

  /* Buttons (fixed to meet WCAG AA in all schemes) */
  --btn-primary:#2563EB;       /* ≥4.5:1 vs #fff */
  --btn-primary-600:#1D4ED8;   /* ≥4.5:1 vs #fff */
  --btn-outline-bg:#ffffff;
  --btn-outline-fg:#0b1220;    /* stay dark on white */
  --btn-outline-border:#cbd5e1;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220; --text:#e9eef6;
    --muted:#a9b3c7;

    /* General brand hues for dark UI (not used for button contrast) */
    --primary:#6ca3ff; --primary-600:#8bb5ff; --primary-50:#0f1c38;
    --accent:#33d6c2; --accent-600:#19b4a4; --violet:#9f7bff;

    --border:#24304a;
    --card-bg:#111a2e; --card-fg:#e9eef6; --card-border:#24304a;

    /* Header (dark) */
    --header-bg: rgba(11,18,32,.94);
    --header-fg:#e9eef6;
    --header-border:#24304a;

    /* Keep button colors deep for contrast on both schemes */
    --btn-primary:#2563EB;
    --btn-primary-600:#1D4ED8;
    --btn-outline-bg:#ffffff;           /* white pill on dark */
    --btn-outline-fg:#0b1220;           /* dark text for AA on white */
    --btn-outline-border:#e2e8f0;       /* lighter edge on dark bg */
  }
}

/* ===== Base ===== */
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  color:var(--text); background:var(--bg);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:1160px;margin:0 auto;padding:0 20px}

/* ===== Navigation (high-contrast) ===== */
.nav{
  position:sticky; top:0; z-index:10;
  background:var(--header-bg);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--header-border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--header-fg)}
.brand svg{width:24px;height:24px}
.nav a{color:var(--header-fg)}
.nav a:hover{color:var(--btn-primary-600);text-decoration:none}
.nav-links{display:flex;gap:18px;align-items:center}

/* ===== Buttons ===== */
.btn{
  display:inline-block;
  border:1px solid transparent;
  border-radius:10px;
  padding:10px 14px;
  font-weight:600;
  letter-spacing:.2px;
  transition:.2s;
  min-height:40px;
}
.btn.primary{
  background:linear-gradient(180deg,var(--btn-primary),var(--btn-primary-600));
  color:#fff;
}
.btn.primary:hover{filter:brightness(.98)}
.btn.outline{
  background:var(--btn-outline-bg);
  color:var(--btn-outline-fg);
  border-color:var(--btn-outline-border);
}
.btn.outline:hover{
  border-color:var(--btn-primary-600);
  box-shadow:0 0 0 3px rgba(37,99,235,.18);
}
.btn-sm{padding:8px 12px;font-size:14px}

/* Keyboard focus ring: ≥3:1 non‑text contrast */
.btn:focus-visible{
  outline:3px solid rgba(37,99,235,.35);
  outline-offset:2px;
}

/* ===== Hero ===== */
.hero{padding:72px 0}
.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.eyebrow{color:var(--btn-primary-600);font-weight:700;letter-spacing:.18em;text-transform:uppercase;font-size:12px}
h1{font-size:48px;line-height:1.1;margin:10px 0 14px; text-wrap:balance}
h2{margin:0 0 10px} h3{margin:0 0 6px}
.sub{color:var(--muted);font-size:18px;margin-bottom:22px}
.hero-cta{display:flex;gap:12px;align-items:center;flex-wrap:wrap}

/* High-contrast pill on dark/light heroes */
.hero-card{
  background:rgba(255,255,255,.96);
  border:1px solid var(--card-border);
  border-radius:16px;padding:14px 16px;
  display:inline-flex;gap:10px;align-items:center;
  color:#344054;
}
@media (prefers-color-scheme: dark){
  .hero-card{
    background:rgba(17,26,46,.92);
    border-color:var(--card-border);
    color:#d6deea;
  }
}

/* ===== Sections & cards ===== */
.section{padding:56px 0}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}

/* Cards get clearer edges + high-contrast text */
.kpis .card,.features .card,.how .card{
  background:var(--card-bg);
  color:var(--card-fg);
  border:1px solid var(--card-border);
  border-radius:14px;padding:18px
}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.features h3{margin:10px 0 6px}
.muted{color:var(--muted)}

.how{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.how .card h3::before{
  counter-increment:step;content:counter(step);
  display:inline-grid;place-items:center;width:26px;height:26px;border-radius:7px;margin-right:8px;
  background:var(--btn-primary);color:#fff;font-size:14px;font-weight:700
}

pre{background:var(--card-bg);border:1px solid var(--card-border);padding:16px;border-radius:12px;overflow:auto}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}

/* CTA panel */
.cta{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:linear-gradient(90deg,var(--primary-50),#fff);
  border:1px solid var(--card-border);border-radius:16px;padding:24px
}

/* Footer */
.footer{padding:30px 0;border-top:1px solid var(--card-border);color:var(--muted);font-size:14px}
.helper{font-size:.9rem;color:#667085}

/* Accessibility: skip link */
.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:16px;top:10px;width:auto;height:auto;padding:8px 12px;border-radius:8px;background:#fff;border:1px solid var(--border)}

/* Mobile adjustments */
.m-cta{display:none}
@media (max-width: 960px){
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .features,.kpis,.how{grid-template-columns:1fr 1fr}
  h1{font-size:40px}
}
@media (max-width:640px){
  .features,.kpis,.how{grid-template-columns:1fr}
  .nav-links{display:none} /* hide full nav */
  .m-cta{display:inline-flex} /* show compact CTA */
  h1{font-size:34px}
}

/* Prefer-reduced-motion */
@media (prefers-reduced-motion: reduce){
  .btn,.nav{transition:none}
}