/* Glassmorphism Header */
.glass-nav {
    position: fixed;
    width: 100%;
    top: 0;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.5);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: padding 0.3s ease, background 0.3s ease;
}
.glass-nav.scrolled {
    padding: 1rem 5%;
    background: rgba(10, 10, 15, 0.85);
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    nav { padding: 1rem 5%; }
    .menu-toggle { display: block; z-index: 1001; }
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    }
    .nav-links.nav-active { right: 0; }
    .nav-links a { font-size: 1.5rem; }
}