.site-header {
position: fixed;
top: 0;
width: 100%;
z-index: 999;
transition: background 0.3s ease, backdrop-filter 0.3s ease;
}
.site-header.transparent {
background: transparent;
backdrop-filter: none;
}
.site-header.scrolled {
background: rgba(0, 0, 0, 0.85);
backdrop-filter: blur(8px);
}
.main-menu li:hover > ul {
opacity: 1;
transform: translateY(0);
pointer-events: auto;
}
.main-menu ul {
position: absolute;
background: rgba(0,0,0,0.8);
backdrop-filter: blur(8px);
opacity: 0;
transform: translateY(10px);
transition: all 0.25s ease;
pointer-events: none;
}