*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0f;
  --bg-alt:#111119;
  --surface:#1a1a24;
  --text:#e0e0e6;
  --text-muted:#888894;
  --accent:#6c63ff;
  --accent-hover:#857eff;
  --radius:8px;
  --max-w:960px;
  --nav-h:60px;
}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
.accent{color:var(--accent)}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:rgba(10,10,15,.85);backdrop-filter:blur(12px);z-index:100;border-bottom:1px solid rgba(255,255,255,.06)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:100%}
.nav-logo{font-weight:700;font-size:1.2rem;color:var(--text);letter-spacing:-.5px}
.nav-links{display:flex;align-items:center;gap:1.5rem}
.nav-links a{color:var(--text-muted);font-size:.9rem;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.lang-dropdown{position:relative}
.lang-btn{background:var(--surface);color:var(--text-muted);border:1px solid rgba(255,255,255,.1);padding:.3rem .6rem;border-radius:var(--radius);font-size:.8rem;cursor:pointer;transition:border-color .2s,color .2s}
.lang-btn:hover{border-color:var(--accent);color:var(--text)}
.lang-menu{display:none;position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);list-style:none;min-width:120px;overflow:hidden;z-index:200}
.lang-dropdown.open .lang-menu{display:block}
.lang-menu li a{display:block;padding:.5rem .8rem;color:var(--text-muted);font-size:.85rem;transition:background .15s,color .15s}
.lang-menu li a:hover,.lang-menu li a.active{background:var(--accent);color:#fff}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.menu-btn span{display:block;width:22px;height:2px;background:var(--text-muted);border-radius:2px;transition:transform .3s,opacity .3s}
.menu-btn.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn.active span:nth-child(2){opacity:0}
.menu-btn.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile menu */
.mobile-menu{display:none;position:fixed;top:var(--nav-h);left:0;right:0;background:var(--bg-alt);border-bottom:1px solid rgba(255,255,255,.06);z-index:99;flex-direction:column;padding:1rem 1.5rem;gap:.8rem}
.mobile-menu.open{display:flex}
.mobile-menu a{color:var(--text-muted);font-size:1rem}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:calc(var(--nav-h) + 2rem) 1.5rem 4rem}
.hero-content{max-width:640px;animation:fadeUp .8s ease both}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.15;margin-bottom:1.2rem;font-weight:800;letter-spacing:-.5px}
.hero-sub{color:var(--text-muted);font-size:1.1rem;margin-bottom:2rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.75rem 1.8rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;transition:background .2s,transform .15s}
.btn:hover{background:var(--accent-hover);transform:translateY(-1px)}

/* Sections */
.section{padding:5rem 1.5rem}
.section-alt{background:var(--bg-alt)}
.container{max-width:var(--max-w);margin:0 auto}
h2{font-size:1.8rem;margin-bottom:2rem;font-weight:700;letter-spacing:-.3px}

/* About */
.about-text{max-width:600px}
.about-text p{color:var(--text-muted);margin-bottom:1rem}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem}
.card{background:var(--surface);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:2rem;transition:border-color .3s,transform .2s}
.card:hover{border-color:var(--accent);transform:translateY(-3px)}
.card-icon{font-size:1.6rem;margin-bottom:.8rem}
.card h3{margin-bottom:.5rem;font-size:1.1rem}
.card p{color:var(--text-muted);font-size:.9rem}

/* Demo links */
.demo-section{margin-top:2.5rem;text-align:center}
.demo-section h3{font-size:1.1rem;margin-bottom:1rem;color:var(--text-muted);font-weight:500}
.demo-links{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn-demo{background:transparent;border:1px solid rgba(255,255,255,.12);color:var(--text);padding:.6rem 1.4rem;font-size:.9rem}
.btn-demo:hover{border-color:var(--accent);color:var(--accent);background:rgba(108,99,255,.08)}

/* Contact */
.contact-container{text-align:center;max-width:500px}
.contact-container p{color:var(--text-muted);margin-bottom:2rem}

/* Footer */
.footer{text-align:center;padding:2rem 1.5rem;color:var(--text-muted);font-size:.85rem;border-top:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;align-items:center;gap:.8rem}
.footer-linkedin{color:var(--text-muted);transition:color .2s}
.footer-linkedin:hover{color:var(--accent)}

/* Animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Mobile */
@media(max-width:640px){
  .nav-links{display:none}
  .menu-btn{display:flex}
  .services-grid{grid-template-columns:1fr}
  .section{padding:3.5rem 1.5rem}
}