/**
 * Navigation Excellence - Professional UI/UX Design
 * Modern, clean, and highly functional navigation system
 */

/* ============================================
   1. CSS Variables for Consistent Design
   ============================================ */
:root {
    /* Brand Colors */
    --nav-primary: #2e7d32;        /* Irish green */
    --nav-primary-dark: #1b5e20;
    --nav-primary-light: #4caf50;
    --nav-accent: #ff6f00;         /* Warm orange */
    --nav-text: #1a1a1a;           /* Much darker for better contrast */
    --nav-text-light: #555555;     /* Darker gray for better readability */
    --nav-bg: #ffffff;
    --nav-border: #e0e0e0;
    
    /* Spacing System */
    --nav-spacing-xs: 4px;
    --nav-spacing-sm: 8px;
    --nav-spacing-md: 16px;
    --nav-spacing-lg: 24px;
    --nav-spacing-xl: 32px;
    
    /* Typography */
    --nav-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --nav-font-size-sm: 0.875rem;
    --nav-font-size-base: 1rem;
    --nav-font-size-lg: 1.125rem;
    --nav-font-size-xl: 1.5rem;
    
    /* Transitions */
    --nav-transition-fast: 0.2s ease;
    --nav-transition-medium: 0.3s ease;
    --nav-transition-slow: 0.5s ease;
    
    /* Shadows */
    --nav-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --nav-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --nav-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* ============================================
   2. Header Container
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--nav-bg);
    box-shadow: var(--nav-shadow-sm);
    transition: box-shadow var(--nav-transition-medium);
}

.site-header.scrolled {
    box-shadow: var(--nav-shadow-md);
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--nav-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 70px;
}

/* ============================================
   3. Site Branding
   ============================================ */
.site-branding {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.site-title {
    margin: 0;
    font-size: var(--nav-font-size-xl);
    font-weight: 700;
    line-height: 1.2;
}

.site-title a {
    color: var(--nav-text) !important;  /* Force darker color */
    text-decoration: none;
    position: relative;
    display: inline-block;
    transition: color var(--nav-transition-fast);
    font-weight: 700;  /* Bold for better visibility */
}

.site-title a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--nav-primary);
    transition: width var(--nav-transition-medium);
}

.site-title a:hover {
    color: var(--nav-primary);
}

.site-title a:hover::after {
    width: 100%;
}

.site-description {
    margin: var(--nav-spacing-xs) 0 0;
    font-size: var(--nav-font-size-sm);
    color: var(--nav-text-light);
    font-weight: 400;
}

/* ============================================
   4. Main Navigation
   ============================================ */
.main-navigation {
    flex: 0 0 auto;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--nav-spacing-xs);
    align-items: center;
}

.main-navigation li {
    margin: 0;
    position: relative;
}

/* ============================================
   5. Navigation Links - Multi-layer Styling
   ============================================ */
.main-navigation a {
    display: inline-flex;
    align-items: center;
    padding: var(--nav-spacing-sm) var(--nav-spacing-md);
    color: var(--nav-text) !important;  /* Force darker color */
    text-decoration: none;
    font-weight: 600;  /* Increased from 500 for better visibility */
    font-size: var(--nav-font-size-base);
    border-radius: 6px;
    position: relative;
    transition: all var(--nav-transition-fast);
    background: transparent;
    overflow: hidden;
    opacity: 1;  /* Ensure full opacity */
}

/* Hover Background Effect */
.main-navigation a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--nav-primary-light), var(--nav-primary));
    opacity: 0;
    transition: opacity var(--nav-transition-fast);
    z-index: -1;
}

.main-navigation a:hover::before {
    opacity: 0.1;
}

/* Text Hover Effect */
.main-navigation a:hover {
    color: var(--nav-primary) !important;
    transform: translateY(-1px);
    background-color: rgba(46, 125, 50, 0.08) !important;  /* Subtle green background */
}

/* Active/Current Page Indicator */
.main-navigation .current-menu-item a,
.main-navigation .current_page_item a {
    color: var(--nav-primary) !important;  /* Green for active page */
    font-weight: 700;  /* Bolder for emphasis */
}

.main-navigation .current-menu-item a::after,
.main-navigation .current_page_item a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--nav-primary);
    border-radius: 2px;
}

/* ============================================
   6. Special Button Styling (Submit Trek)
   ============================================ */
.main-navigation a[href*="submit-trek"] {
    background: var(--nav-primary) !important;
    color: white !important;
    font-weight: 600;
    padding: var(--nav-spacing-sm) var(--nav-spacing-lg);
    margin-left: var(--nav-spacing-sm);
    box-shadow: var(--nav-shadow-sm);
    transition: all var(--nav-transition-medium);
}

.main-navigation a[href*="submit-trek"]::before {
    background: linear-gradient(135deg, var(--nav-accent), var(--nav-primary-dark));
    opacity: 0;
}

.main-navigation a[href*="submit-trek"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--nav-shadow-md);
    color: white;
}

.main-navigation a[href*="submit-trek"]:hover::before {
    opacity: 1;
}

/* ============================================
   7. Mobile Menu (Hamburger)
   ============================================ */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--nav-spacing-sm);
    cursor: pointer;
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: 6px;
    transition: background var(--nav-transition-fast);
}

.mobile-menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.hamburger {
    position: relative;
    width: 24px;
    height: 20px;
    margin: auto;
}

.hamburger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: all var(--nav-transition-fast);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }

/* Active hamburger state */
.mobile-menu-toggle.active .hamburger span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

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

.mobile-menu-toggle.active .hamburger span:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* ============================================
   8. Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .main-navigation a {
        padding: var(--nav-spacing-sm) var(--nav-spacing-sm);
        font-size: var(--nav-font-size-sm);
    }
    
    .header-inner {
        padding: 0 var(--nav-spacing-md);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-navigation {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--nav-bg);
        transform: translateX(-100%);
        transition: transform var(--nav-transition-medium);
        overflow-y: auto;
        box-shadow: var(--nav-shadow-lg);
    }
    
    .main-navigation.active {
        transform: translateX(0);
    }
    
    .main-navigation ul {
        flex-direction: column;
        align-items: stretch;
        padding: var(--nav-spacing-lg);
        gap: var(--nav-spacing-sm);
    }
    
    .main-navigation a {
        width: 100%;
        padding: var(--nav-spacing-md);
        font-size: var(--nav-font-size-lg);
        border-bottom: 1px solid var(--nav-border);
    }
    
    .main-navigation a[href*="submit-trek"] {
        margin: var(--nav-spacing-md) 0 0;
        text-align: center;
    }
    
    /* Mobile overlay */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--nav-transition-medium);
        z-index: 999;
    }
    
    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

/* ============================================
   9. Micro-interactions & Polish
   ============================================ */

/* Focus styles for accessibility */
.main-navigation a:focus {
    outline: 2px solid var(--nav-primary);
    outline-offset: 2px;
}

/* Loading animation for page transitions */
@keyframes navPulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.main-navigation a.loading {
    animation: navPulse 1s infinite;
    pointer-events: none;
}

/* Subtle entrance animation */
@keyframes navFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.site-header {
    animation: navFadeIn 0.5s ease-out;
}

/* ============================================
   10. Dark Mode Support (optional)
   ============================================ */
/* Commented out to maintain consistent light theme experience
@media (prefers-color-scheme: dark) {
    :root {
        --nav-bg: #1a1a1a;
        --nav-text: #e0e0e0;
        --nav-text-light: #9e9e9e;
        --nav-border: #333333;
    }
    
    .site-header {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    }
}
*/