/* header.css */
:root {
    /* These variables may be moved to variables.css */
    --header-height: 90px;
    --header-background: rgba(8, 8, 24, 0.95);
    --header-scrolled-background: rgba(12, 12, 30, 0.98);
    --header-border: rgba(85, 85, 155, 0.2);
    --logo-size: 45px;
    --nav-link-color: var(--text-light);
    --nav-link-hover: var(--accent-primary);
    --cta-pulse-color: rgba(98, 0, 238, 0.5);
}

/* Main Header Styles */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--header-background);
    z-index: 1000;
    transition: background-color 0.3s ease, height 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.site-header.scrolled {
    height: 70px;
    background-color: var(--header-scrolled-background);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.header-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.neural-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(to right, var(--header-border) 1px, transparent 1px),
                     linear-gradient(to bottom, var(--header-border) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
}

.ambient-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1rem;
}

/* Logo Styles */
.logo-container {
    position: relative;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
}

.logo-symbol {
    width: var(--logo-size);
    height: var(--logo-size);
    position: relative;
    transition: transform 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.logo:hover .logo-symbol {
    transform: scale(1.05) rotate(5deg);
}

.logo-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 8px var(--primary-glow));
    transition: filter 0.3s ease;
}

.logo-path {
    fill: var(--primary);
    transition: fill 0.3s ease;
}

.logo-circuit {
    fill: var(--secondary);
    transition: fill 0.3s ease;
}

.logo:hover .logo-svg {
    filter: drop-shadow(0 0 12px var(--primary-glow));
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1;
    letter-spacing: 2px;
}

.logo-io {
    color: var(--secondary);
}

.logo-tagline {
    font-size: 0.7rem;
    color: var(--secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 2px;
}

/* Navigation Styles */
.primary-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--nav-link-color);
    text-decoration: none;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: width 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.nav-link:hover {
    color: var(--text-white);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--text-white);
}

/* CTA Button Styles */
.header-cta {
    margin-left: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.8rem 1.6rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-white);
    border: none;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--primary-glow);
}

.pulse-animation {
    position: relative;
}

.pulse-animation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--cta-pulse-color);
    border-radius: 4px;
    z-index: -1;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    70% {
        transform: scale(1.1);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Mobile Navigation Toggle */
.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    cursor: pointer;
    z-index: 1010;
}

.toggle-line {
    width: 100%;
    height: 2px;
    background-color: var(--text-white);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.mobile-toggle.active .toggle-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.active .toggle-line:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active .toggle-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--header-scrolled-background);
    z-index: 1000;
    padding: 100px 2rem 2rem;
    transition: right 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--nav-link-color);
    text-decoration: none;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s ease;
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--header-border);
}

.mobile-nav-link:hover {
    color: var(--text-white);
}

.full-width {
    width: 100%;
}

/* Mobile Navigation Overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 990;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .nav-list {
        gap: 1.5rem;
    }
}

@media (max-width: 992px) {
    .primary-nav {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .header-cta {
        display: none;
    }
    
    .logo-name {
        font-size: 1.3rem;
    }
    
    .logo-tagline {
        font-size: 0.65rem;
    }
}

@media (max-width: 576px) {
    .logo-symbol {
        width: 40px;
        height: 40px;
    }
    
    .logo-name {
        font-size: 1.1rem;
    }
    
    .mobile-menu {
        width: 100%;
    }
}