.app-header{--gradient-primary:linear-gradient(135deg,hsl(345,85%,65%),hsl(345,85%,75%));--shadow-soft:0 4px 20px hsl(345,85%,65%/0.1)}.app-header .logo-gradient{background:var(--gradient-primary)}.app-header .nav-item{transition:all .3s cubic-bezier(.4,0,.2,1)}.app-header .nav-item:hover{transform:translateY(-1px)}.app-header .mobile-menu{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.app-header.scrolled{box-shadow:var(--shadow-soft)}@media (max-width:768px){.app-header{--shadow-soft:0 2px 10px hsl(345,85%,65%/0.08)}}