/**
 * Enhanced Navigation Styles
 * Improves usability and accessibility of the main navigation menu
 */

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--neutral-white);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    font-weight: 500;
    z-index: 10000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--neutral-white);
    outline-offset: 2px;
}

/* Enhanced Main Navigation */
.main-nav {
    position: relative;
}

.main-nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 8px;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    display: block;
    padding: 12px 16px;
    color: var(--neutral-dark);
    text-decoration: none;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
}

/* Enhanced hover and focus states */
.main-nav a:hover {
    background-color: var(--primary-lighter);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.main-nav a:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    background-color: var(--primary-lighter);
    color: var(--primary-color);
}

.main-nav a.active {
    background-color: var(--primary-color);
    color: var(--neutral-white);
    font-weight: 600;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: 2px solid var(--neutral-dark);
    border-radius: 6px;
    cursor: pointer;
    padding: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-lighter);
}

.mobile-menu-toggle:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background-color: var(--neutral-dark);
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
}

.mobile-menu-toggle:hover .hamburger-line {
    background-color: var(--primary-color);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Enhanced responsive design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
        order: 1;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--neutral-white);
        border: 1px solid var(--secondary-lighter);
        border-radius: 0 0 8px 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
        order: 2;
    }
    
    .main-nav.nav-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 12px;
        gap: 4px;
    }
    
    .main-nav a {
        padding: 14px 16px;
        border-radius: 6px;
        text-align: left;
    }
    
    .main-nav a:hover {
        transform: none;
    }
    
    .main-nav a.active::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .main-nav a {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .mobile-menu-toggle {
        width: 40px;
        height: 40px;
    }
    
    .hamburger-line {
        width: 18px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .main-nav a {
        border: 1px solid transparent;
    }
    
    .main-nav a:hover,
    .main-nav a:focus {
        border-color: var(--primary-color);
    }
    
    .main-nav a.active {
        border-color: var(--neutral-white);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .main-nav a,
    .mobile-menu-toggle,
    .hamburger-line,
    .main-nav,
    .skip-link {
        transition: none;
    }
    
    .main-nav a:hover {
        transform: none;
    }
}

/* Focus visible support for better keyboard navigation */
.main-nav a:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .mobile-menu-toggle,
    .skip-link {
        display: none;
    }
    
    .main-nav {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
    }
    
    .main-nav ul {
        flex-direction: row;
        justify-content: center;
    }
    
    .main-nav a {
        color: black;
        background: none;
    }
}