:root {
    --white: #FFFFFF;
    --accent-gradient: var(--gradient-primary);
}

.header-fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.8rem 0;
    /* Tightened padding for better vertical alignment */
    transition: var(--transition);
}

.header-fixed.scrolled {
    padding: 0.6rem 0;
    background: rgba(10, 10, 10, 0.95);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: 1.8rem;
    /* Optimized spacing for 1280px containers */
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links>li>a {
    transition: var(--transition);
}

.nav-links>li>a.btn {
    color: #FFFFFF !important;
}

.nav-links>li>a:not(.btn) {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links>li>a.active:not(.btn),
.nav-links>li>a:not(.btn):hover {
    color: var(--white);
}

.nav-links>li>a:not(.btn):hover::after,
.nav-links>li>a.active:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

/* Products Side Submenu Dropdown */
.dropdown-products {
    position: relative;
}

.side-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #0f0f0f;
    border: 1px solid var(--glass-border);
    border-top: 3px solid var(--accent-color);
    width: 300px;
    padding: 1rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition);
    border-radius: 0 0 1rem 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.dropdown-products:hover .side-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.side-submenu li {
    list-style: none;
}

.side-submenu a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.side-submenu a i {
    width: 20px;
    text-align: center;
    color: var(--accent-color);
}

.side-submenu a:hover {
    background: rgba(255, 255, 255, 0.03);
    color: var(--white);
    padding-left: 2rem;
}

/* Service Multi-Column Dropdown */
.dropdown-mega {
    position: static;
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #0f0f0f;
    border-bottom: 1px solid var(--glass-border);
    padding: 3rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.dropdown-mega:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.mega-col h4 {
    color: var(--white);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.mega-col a {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0.6rem 0;
    transition: var(--transition);
}

.mega-col a:hover {
    color: var(--white);
    transform: translateX(5px);
}

/* Glass Card inside Mega Menu */
.mega-col .glass-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.mega-col .glass-card h5 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

/* Hamburger */
.hamburger {
    display: none;
    cursor: pointer;
    color: var(--white);
    z-index: 1001;
}

@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
    }
}

/* Mobile Navigation Overlay */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: -100%;
        top: 70px;
        height: calc(100vh - 70px);
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding-top: 2rem;
        transition: right 0.4s ease;
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        margin: 1.5rem 0;
    }

    .hamburger {
        display: block;
        cursor: pointer;
        color: white;
        z-index: 1000;
    }

    .hamburger.active i::before {
        content: "\f00d";
        /* Change to X icon from FontAwesome */
    }
}

@media (max-width: 768px) {
    /* ... existing mobile styles ... */

    footer .grid-4 {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    footer .social-links {
        justify-content: center;
    }

    footer .nav-links-vertical {
        align-items: center;
    }
}