nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1rem 2rem;display:flex;align-items:center;justify-content:space-between;background:rgba(245,243,250,0.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);transition:transform .4s ease,box-shadow .3s ease}
nav.scrolled{box-shadow:0 2px 20px rgba(109,40,217,0.08)}
nav.hidden-nav{transform:translateY(-100%)}
.nav-logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.5rem;background:linear-gradient(135deg,var(--accent-violet),var(--accent-cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.02em}
.nav-center{display:flex;gap:2.5rem;list-style:none}
.nav-center a{color:var(--text-muted);text-decoration:none;font-size:.85rem;font-weight:500;letter-spacing:.03em;text-transform:uppercase;transition:color .3s ease;position:relative}
.nav-center a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent-violet);transition:width .3s ease}
.nav-center a:hover{color:var(--text-primary)}
.nav-center a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:1rem}
.nav-cta{padding:.6rem 1.5rem;border:1px solid var(--accent-violet);border-radius:100px;color:var(--accent-violet);text-decoration:none;font-size:.85rem;font-weight:500;transition:all .3s ease;background:transparent}
.nav-cta:hover{background:var(--accent-violet);color:white;box-shadow:var(--glow-violet)}
.nav-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.nav-burger span{width:24px;height:2px;background:var(--text-primary);transition:all .3s ease;border-radius:2px;display:block}
.nav-burger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-burger.active span:nth-child(2){opacity:0}
.nav-burger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

.mobile-menu{position:fixed;inset:0;z-index:999;background:rgba(245,243,250,0.97);backdrop-filter:blur(30px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2.5rem;opacity:0;visibility:hidden;transition:all .4s ease}
.mobile-menu.active{opacity:1;visibility:visible}
.mobile-menu a{font-family:'Syne',sans-serif;font-size:2rem;font-weight:700;color:var(--text-primary);text-decoration:none;transition:color .3s ease;position:relative}
.mobile-menu a::before{content:'';position:absolute;bottom:-4px;left:50%;width:0;height:2px;background:var(--accent-violet);transition:all .3s ease;transform:translateX(-50%)}
.mobile-menu a:hover{color:var(--accent-violet)}
.mobile-menu a:hover::before{width:60%}