/* ============ SevenkoAuth — styles ============ */
:root{
  --bg:#070b14;
  --bg-alt:#0b1120;
  --card:#0f172a;
  --border:rgba(255,255,255,.08);
  --text:#e2e8f0;
  --muted:#94a3b8;
  --cyan:#22d3ee;
  --green:#34d399;
  --grad:linear-gradient(90deg,#22d3ee,#34d399);
  --radius:16px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
img{max-width:100%}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(7,11,20,.8);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:.3s}
.nav.scrolled{background:rgba(7,11,20,.95);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.05rem}
.brand-logo{width:34px;height:34px;object-fit:contain;display:block}
.nav-links{display:flex;align-items:center;gap:24px;font-size:.95rem}
.nav-links a:not(.btn){color:var(--muted);transition:.2s}
.nav-links a:not(.btn):hover{color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:12px;font-weight:600;font-size:.95rem;cursor:pointer;transition:.25s;border:1px solid transparent}
.btn-primary{background:var(--grad);color:#04121a}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(34,211,238,.3)}
.btn-ghost{border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* Hero */
.hero{position:relative;padding:170px 0 90px;overflow:hidden}
.hero-glow{position:absolute;top:-120px;right:-120px;width:520px;height:520px;background:radial-gradient(circle,rgba(34,211,238,.18),transparent 65%);filter:blur(20px);pointer-events:none}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin-bottom:16px}
.hero h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(2.4rem,6vw,4rem);line-height:1.08;font-weight:700;margin-bottom:20px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.15rem;color:var(--muted);max-width:640px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;gap:48px;flex-wrap:wrap;border-top:1px solid var(--border);padding-top:32px}
.stat strong{display:block;font-family:'Space Grotesk',sans-serif;font-size:1.9rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:.9rem}

/* Sections */
.section{padding:96px 0}
.section.alt{background:var(--bg-alt)}
.section-title{font-family:'Space Grotesk',sans-serif;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.15;margin-bottom:16px}
.section-sub{color:var(--muted);max-width:640px;margin-bottom:48px}

/* Cards grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35)}
.card-icon{font-size:1.8rem;margin-bottom:14px}
.card h3{font-family:'Space Grotesk',sans-serif;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;position:relative}
.step-num{font-family:'Space Grotesk',sans-serif;font-size:1.2rem;font-weight:700;color:var(--cyan);display:block;margin-bottom:12px}
.step h3{margin-bottom:8px}
.step p{color:var(--muted);font-size:.95rem}

/* Security */
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.sec-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.sec-item h3{font-size:1.05rem;margin-bottom:8px}
.sec-item p{color:var(--muted);font-size:.92rem}

/* CTA */
.cta-box{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:56px 32px;text-align:center}
.cta-box h2{font-family:'Space Grotesk',sans-serif;font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:12px}
.cta-box p{color:var(--muted);margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
.footer{border-top:1px solid var(--border);padding:48px 0 32px;background:var(--bg-alt)}
.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:32px}
.footer-sub{color:var(--muted);font-size:.9rem;margin-top:6px}
.footer-links{display:flex;gap:24px;flex-wrap:wrap;font-size:.92rem}
.footer-links a{color:var(--muted);transition:.2s}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);padding-top:24px}

/* Mobile */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:20px;flex-direction:column;align-items:flex-start;gap:16px}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero{padding:140px 0 60px}
  .section{padding:72px 0}
  .hero-stats{gap:24px}
}