/* ============================================ */
/* NAVIGATION HEADER STYLES */
/* ============================================ */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--grit-black);
    border-bottom: 2px solid var(--response-gold);
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    flex-shrink: 0;
}

.site-logo {
    font-family: 'Orbitron', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--response-gold);
    margin: 0;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    letter-spacing: 2px;
}

/* Hamburger Menu Button */
.hamburger-menu {
    background: transparent;
    border: none;
    padding: var(--space-sm);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: all var(--duration-standard) var(--ease-standard);
    z-index: 101;
}

.hamburger-line {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--synth-green);
    border-radius: 2px;
    transition: all var(--duration-standard) var(--ease-standard);
}

.hamburger-menu:hover .hamburger-line {
    background: var(--response-gold);
}

.hamburger-menu.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translateY(7px);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-7px);
}

/* Horizontal Menu */
.horizontal-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 100vh;
    background: var(--grit-black);
    padding-top: 100px;
    transform: translateY(-100%);
    transition: transform var(--duration-slow) var(--ease-emphasized);
    overflow-y: auto;
    z-index: 99;
}

.horizontal-menu.active {
    transform: translateY(0);
}

.menu-categories {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.menu-category {
    background: var(--context-gray);
    border: 2px solid var(--thread-silver);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--duration-standard) var(--ease-standard);
}

.menu-category:hover {
    border-color: var(--synth-green);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 255, 127, 0.2);
}

.category-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--response-gold);
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--obsidian-gray);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--thread-silver);
    transition: all var(--duration-standard) var(--ease-standard);
}

.menu-link:hover {
    background: var(--context-gray);
    border-color: var(--synth-green);
    color: var(--synth-green);
    transform: translateX(4px);
}

.menu-link.active {
    background: var(--synth-green);
    color: var(--grit-black);
    font-weight: 600;
}

.link-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.link-text {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 500;
}

/* Adjust main container for fixed header */
body {
    padding-top: 80px;
}

/* Responsive Navigation */
@media (max-width: 1024px) {
    .menu-categories {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .site-logo {
        font-size: 1.5rem;
    }
    
    .menu-categories {
        grid-template-columns: 1fr;
        padding: var(--space-lg);
    }
    
    .category-title {
        font-size: 1.25rem;
    }
}

/* Smooth scrolling for menu */
.horizontal-menu {
    -webkit-overflow-scrolling: touch;
}

/* Disable body scroll when menu is open */
body.menu-open {
    overflow: hidden;
}