.glass-header {
    display: grid;
    grid-template-columns: 250px 1fr 250px;
    align-items: center;
    padding: 24px 5%;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9000;
    opacity: 0;
    pointer-events: none;
    height: 100px;
}
.glass-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: -1;
}
.header-spacer {
    justify-self: start;
    width: 100%;
}
.main-nav {
    justify-self: center;
    display: flex;
    gap: 40px;
    align-items: center;
}
.main-nav a {
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
    text-transform: uppercase;
    transition: color 0.3s;
}
.main-nav a:hover {
    color: #FFCC00;
}
.header-contact {
    justify-self: end;
}
.glow-btn {
    padding: 12px 32px;
    border-radius: 50px;
    background: #111111;
    color: #ffffff !important;
    border: 2px solid transparent;
    font-weight: 700;
    animation: buttonGlow 4s infinite alternate;
}
@keyframes buttonGlow {
    0% { box-shadow: 0 0 15px #FF0000, inset 0 0 5px #FF0000; border-color: #FF0000; }
    33% { box-shadow: 0 0 15px #007AFF, inset 0 0 5px #007AFF; border-color: #007AFF; }
    66% { box-shadow: 0 0 15px #FFCC00, inset 0 0 5px #FFCC00; border-color: #FFCC00; }
    100% { box-shadow: 0 0 15px #AF52DE, inset 0 0 5px #AF52DE; border-color: #AF52DE; }
}
.hamburger {
    display: none;
    font-size: 30px;
    cursor: pointer;
    color: #ffffff;
    justify-self: end;
}
@media (max-width: 1200px) {
    .glass-header {
        grid-template-columns: 1fr auto;
    }
    .header-contact {
        display: none;
    }
    .hamburger { display: block; }
    .main-nav {
        position: absolute;
        top: 100px;
        left: 0;
        width: 100%;
        height: calc(100vh - 100px);
        background: rgba(10, 15, 30, 0.6);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 50px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.4s ease-in-out;
    }
    .main-nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .main-nav a {
        font-size: 20px;
        padding: 15px 0;
        width: 100%;
        text-align: center;
    }
}