/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e17;--bg2:#111827;--bg3:#1a2332;
  --surface:rgba(255,255,255,0.04);--surface2:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.08);--border2:rgba(255,255,255,0.15);
  --text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;
  --accent:#3b82f6;--accent2:#60a5fa;
  --green:#22c55e;--green2:#4ade80;
  --amber:#f59e0b;--amber2:#fbbf24;
  --red:#ef4444;--red2:#f87171;
  --purple:#a855f7;--cyan:#06b6d4;
  --radius:12px;--radius-lg:20px;
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== LOGIN GATE ===== */
.login-gate{position:fixed;inset:0;z-index:999;background:var(--bg);display:flex;align-items:center;justify-content:center}
.login-gate.hidden{display:none}
.login-card{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:48px 40px;text-align:center;max-width:400px;width:90%;backdrop-filter:blur(20px)}
.login-icon{font-size:48px;margin-bottom:16px}
.login-card h2{font-size:1.4rem;font-weight:700;color:#fff;margin-bottom:4px}
.login-sub{font-size:13px;color:var(--text3);margin-bottom:32px}
.login-card input{display:block;width:100%;padding:12px 16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text);font-family:inherit;font-size:14px;margin-bottom:12px;outline:none;transition:border-color .2s}
.login-card input:focus{border-color:var(--accent)}
.login-btn{display:block;width:100%;padding:14px;border:none;border-radius:var(--radius);background:linear-gradient(135deg,var(--accent),var(--cyan));color:#fff;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:4px}
.login-btn:hover{opacity:0.9}
.login-error{color:var(--red2);font-size:13px;margin-top:12px}

/* ===== NAV ===== */
.top-nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:rgba(10,14,23,0.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-brand{font-size:14px;font-weight:600;color:var(--accent2);text-decoration:none;display:flex;align-items:center;gap:8px}
.nav-brand span{color:var(--text3);font-weight:400}
.nav-links{display:flex;gap:2px;align-items:center}
.nav-link{padding:6px 14px;border-radius:100px;font-size:12px;font-weight:500;color:var(--text3);text-decoration:none;transition:all .2s;border:none;background:none;cursor:pointer;font-family:inherit}
.nav-link:hover{color:var(--text);background:var(--surface2)}
.nav-link.active{color:var(--accent2);background:rgba(59,130,246,0.12)}
.nav-right{display:flex;gap:4px;align-items:center}
.lang-btn{background:none;border:none;color:var(--text3);padding:6px 12px;border-radius:100px;cursor:pointer;font-size:12px;font-weight:600;font-family:inherit;transition:all .25s}
.lang-btn:hover{color:var(--text)}
.lang-btn.active{background:var(--accent);color:#fff}
.logout-btn{background:none;border:none;color:var(--red2);padding:6px 10px;border-radius:100px;cursor:pointer;font-size:14px;font-family:inherit}

/* ===== SECTIONS ===== */
.section{padding:100px 0}
.section:first-of-type{padding-top:80px}
.section-dark{background:var(--bg2)}
.section-title{font-size:2rem;font-weight:700;margin-bottom:8px;color:#fff}
.section-sub{color:var(--text2);margin-bottom:40px;font-size:1rem}
.sub-title{font-size:1.4rem;font-weight:600;margin:48px 0 8px;color:#fff}

/* ===== HERO ===== */
.hero{position:relative;min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:100px 24px 60px}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(59,130,246,0.15) 0%,transparent 60%),radial-gradient(ellipse at 80% 80%,rgba(6,182,212,0.08) 0%,transparent 40%);z-index:0}
.hero-content{position:relative;z-index:1}
.badge{display:inline-block;padding:8px 20px;border-radius:100px;background:var(--surface2);border:1px solid var(--border2);font-size:14px;font-weight:500;color:var(--accent2);letter-spacing:0.5px;margin-bottom:24px}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.1;margin-bottom:20px;color:#fff}
.gradient-text{background:linear-gradient(135deg,var(--accent2),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.1rem;color:var(--text2);max-width:600px;margin:0 auto 40px}
.cert-badges{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cert-badge{display:flex;align-items:center;gap:10px;padding:14px 24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);font-size:15px;font-weight:500;transition:all .3s}
.cert-badge.active{border-color:var(--green);background:rgba(34,197,94,0.08)}
.cert-icon{font-size:20px}
.status{color:var(--green2);font-size:13px;font-weight:600}

/* ===== FOOTER ===== */
.footer{padding:40px 24px;text-align:center;color:var(--text3);font-size:13px;border-top:1px solid var(--border)}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .hero h1{font-size:1.8rem}
  .top-nav{flex-wrap:wrap;gap:8px}
  .nav-links{order:3;width:100%;overflow-x:auto;padding-bottom:4px}
  .hero{min-height:50vh;padding-top:120px}
}