/* Navigation Styles */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-brand a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-color);
    background-color: var(--bg-tertiary);
    text-decoration: none;
}

.nav-link.active {
    color: var(--accent-color);
    background-color: var(--bg-tertiary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 2px;
    background-color: var(--accent-color);
    border-radius: 1px;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
    background-color: var(--bg-tertiary);
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-secondary);
    margin: 2px 0;
    transition: all var(--transition-normal);
    border-radius: 1px;
}

.nav-toggle.active .bar:nth-child(1) {
    transform: rotate(-45deg) translate(-6px, 6px);
    background-color: var(--accent-color);
}

.nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
    transform: rotate(45deg) translate(-6px, -6px);
    background-color: var(--accent-color);
}

/* Mobile Responsive */
@media (max-width: 968px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-secondary);
        width: 100%;
        height: calc(100vh - 70px);
        text-align: center;
        transition: left var(--transition-normal);
        padding: var(--spacing-xl) 0;
        gap: var(--spacing-lg);
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        padding: var(--spacing-lg) var(--spacing-xl);
        width: 100%;
        font-size: 1.1rem;
        border-radius: 0;
    }
    
    .nav-link.active::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-container {
        height: 60px;
    }
    
    .nav-brand a {
        font-size: 1.3rem;
    }
    
    .nav-menu {
        top: 60px;
        height: calc(100vh - 60px);
    }
}

/* Scrolled state */
.navbar.scrolled {
    background-color: rgba(13, 17, 23, 0.98);
    box-shadow: var(--shadow-md);
}

/* Hover effects for desktop */
@media (min-width: 969px) {
    .nav-menu {
        position: relative;
    }
    
    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
        opacity: 0;
        border-radius: var(--border-radius);
        transition: opacity var(--transition-fast);
        z-index: -1;
    }
    
    .nav-link:hover::before {
        opacity: 0.1;
    }
}

/* Navigation accessibility */
.nav-link:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.nav-toggle:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Skip to content link for accessibility */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-color);
    color: var(--bg-color);
    padding: 8px;
    border-radius: var(--border-radius);
    text-decoration: none;
    z-index: 100;
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: 6px;
}