/* === PREMIUM NAVIGATION === */

.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-glass);
    transition: all var(--transition-base);
}

.nav-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, 
        transparent 0%,
        rgba(0, 220, 130, 0.05) 50%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.nav-header:hover::before {
    opacity: 1;
}

.nav-header::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.1;
    pointer-events: none;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand */
.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
}

.brand-icon {
    font-size: var(--text-2xl);
    color: var(--accent-primary);
    animation: pulse 3s ease-in-out infinite;
}

.brand-text {
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.brand-accent {
    color: var(--accent-primary);
    font-weight: var(--font-normal);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

.nav-link {
    position: relative;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
    transition: all var(--transition-base);
    padding: var(--space-2) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

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

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

/* Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-login {
    color: var(--text-primary);
}

.btn-nav-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--bg-primary);
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-base);
}

.btn-nav-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 220, 130, 0.3);
    color: var(--bg-primary); /* Keep text dark */
}

.btn-nav-primary span {
    position: relative;
    z-index: 1;
}

.btn-shimmer {
    position: absolute;
    top: -2px;
    right: -2px;
    bottom: -2px;
    left: -2px;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.7) 50%,
        transparent 60%
    );
    animation: shimmer 3s ease-out infinite;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-nav-primary:hover .btn-shimmer {
    opacity: 0.3;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-secondary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle:hover span {
    background: var(--text-primary);
}

/* Scroll State */
.nav-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-container {
        height: 64px;
    }
    
    .nav-menu,
    .nav-actions {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    /* Mobile menu styles would go here */
}

/* Add padding to hero section to account for fixed nav */
.hero-section {
    padding-top: 72px;
}