/* ===== NEXILRA HEADER STYLES ===== */

/* Header Container */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: 1rem 0;
    background: rgba(15, 15, 35, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.header.scrolled {
    background: rgba(15, 15, 35, 0.95);
    box-shadow: var(--shadow-xl);
    border-bottom-color: var(--border-primary);
    padding: 0.75rem 0;
}

/* Navigation Container */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    position: relative;
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-normal);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: var(--font-black);
    font-size: var(--text-sm);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.logo:hover .logo-icon {
    transform: rotate(5deg);
}

.logo:hover .logo-icon::before {
    opacity: 1;
    animation: shine 0.8s ease-in-out;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.logo-text {
    font-family: var(--font-family-primary);
    background: var(--bg-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-normal);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
    margin: 0;
    padding: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: var(--transition-normal);
    position: relative;
    padding: var(--spacing-sm) 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--bg-gradient-primary);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateX(-50%);
    border-radius: var(--radius-sm);
}

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

.nav-link.active {
    color: var(--primary-light);
}

/* CTA Button */
.cta-button {
    background: var(--bg-gradient-primary);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    text-decoration: none;
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--white);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--text-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: var(--transition-normal);
    border-radius: var(--radius-sm);
    position: relative;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.mobile-menu-toggle:hover {
    color: var(--accent-color);
    background: rgba(99, 102, 241, 0.1);
}

.hamburger-line {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    transition: var(--transition-normal);
    border-radius: 1px;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Header Scroll Effects */
.header-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.05;
    background-image: radial-gradient(circle at 1px 1px, var(--primary-color) 1px, transparent 0);
    background-size: 20px 20px;
    animation: drift 30s linear infinite;
}

@keyframes drift {
    0% {
        transform: translateX(0) translateY(0);
    }
    100% {
        transform: translateX(20px) translateY(20px);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .header {
        padding: 0.75rem 0;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .logo {
        font-size: var(--text-lg);
        gap: var(--spacing-sm);
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: var(--text-xs);
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 15, 35, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-xl);
        border-top: 1px solid var(--border-light);
        gap: var(--spacing-lg);
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        box-shadow: var(--shadow-xl);
        z-index: var(--z-dropdown);
    }
    
    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease-out;
    }
    
    .nav-link {
        padding: var(--spacing-md) 0;
        font-size: var(--text-base);
        text-align: center;
        border-bottom: 1px solid var(--border-light);
        text-transform: none;
        letter-spacing: normal;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .cta-button {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--text-xs);
        text-transform: none;
        letter-spacing: normal;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .logo {
        font-size: var(--text-base);
    }
    
    .logo-icon {
        width: 24px;
        height: 24px;
    }
    
    .cta-button {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--text-xs);
    }
    
    .nav-menu {
        padding: var(--spacing-lg);
    }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .header {
        padding: 0.5rem 0;
    }
    
    .nav-menu {
        max-height: 60vh;
        overflow-y: auto;
        padding: var(--spacing-lg);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-text {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .header,
    .logo,
    .nav-link,
    .cta-button,
    .mobile-menu-toggle,
    .hamburger-line {
        transition: none !important;
    }
    
    .logo-icon::before,
    .cta-button::before {
        display: none;
    }
    
    .header-bg-pattern {
        animation: none;
    }
}

/* Dark Mode Support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Already using dark theme, no changes needed */
}

/* Print Styles */
@media print {
    .header {
        display: none;
    }
}