/* ========================================
   ALBERATH WIKI - NAVIGATION SYSTEM
   ======================================== */

/* ========== MAIN NAVIGATION BAR ========== */
.wiki-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, rgba(13, 26, 26, 0.95) 0%, rgba(15, 52, 46, 0.95) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid rgba(77, 217, 217, 0.3);
    padding: var(--space-md) 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-top: none;
    border-left: none;
    border-right: none;
    /* Responsive width and border-radius handled in media queries */
}

.wiki-nav.hidden {
    transform: translateY(-100%);
    opacity: 0;
}

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

/* Logo/Home Link */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-accent-cyan);
    font-weight: 700;
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.nav-logo:hover {
    color: var(--gold);
    transform: translateY(-2px);
}

.nav-logo-image {
    height: 36px;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(212, 169, 79, 0.4));
}

/* Main Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(77, 217, 217, 0.15);
    color: var(--color-accent-cyan);
}

.nav-link i {
    width: 18px;
    height: 18px;
}

/* Add chevron indicator for nav items with dropdowns */
.nav-item:has(.nav-dropdown) .nav-link::after {
    content: '›';
    margin-left: var(--space-xs);
    font-size: 1.2rem;
    transform: rotate(90deg);
    display: inline-block;
    transition: transform 0.2s ease;
}

.nav-item:has(.nav-dropdown):hover .nav-link::after,
.nav-item:has(.nav-dropdown):focus-within .nav-link::after {
    transform: rotate(270deg);
}

/* Dropdown Menus */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: linear-gradient(135deg, rgba(13, 26, 26, 0.98) 0%, rgba(15, 52, 46, 0.98) 100%);
    backdrop-filter: blur(12px);
    border: 2px solid rgba(77, 217, 217, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-slate-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.nav-dropdown-item:hover {
    background: rgba(77, 217, 217, 0.1);
    color: var(--color-accent-cyan);
    padding-left: calc(var(--space-md) + 4px);
}

.nav-dropdown-divider {
    height: 1px;
    background: rgba(77, 217, 217, 0.2);
    margin: var(--space-xs) var(--space-md);
}

/* Nested Dropdown Items */
.nav-dropdown-item-parent {
    position: relative;
}

.nav-dropdown-item.has-submenu::after {
    content: '›';
    float: right;
    margin-left: var(--space-sm);
    font-size: 1.1rem;
}

.nav-dropdown-submenu {
    position: absolute;
    left: 100%;
    top: -8px;
    min-width: 180px;
    background: linear-gradient(135deg, rgba(13, 26, 26, 0.98) 0%, rgba(15, 52, 46, 0.98) 100%);
    backdrop-filter: blur(12px);
    border: 2px solid rgba(77, 217, 217, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-sm) 0;
    margin-left: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.2s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 1001;
}

.nav-dropdown-item-parent:hover .nav-dropdown-submenu,
.nav-dropdown-item-parent:focus-within .nav-dropdown-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.nav-dropdown-submenu .nav-dropdown-item {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.9rem;
}

/* Mobile Menu Buttons */
.mobile-menu-btn {
    display: none;
    background: rgba(77, 217, 217, 0.1);
    border: 2px solid rgba(77, 217, 217, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    color: var(--color-accent-cyan);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: rgba(77, 217, 217, 0.2);
    border-color: var(--color-accent-cyan);
}

.mobile-menu-btn i {
    width: 24px;
    height: 24px;
}

/* ========== BREADCRUMBS ========== */
.breadcrumbs {
    max-width: 90vw;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-top: 80px; /* Space for fixed nav */
}

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.breadcrumb-link {
    padding: calc(var(--space-xs) / 2) var(--space-sm);
    background: rgba(77, 217, 217, 0.15);
    border: 1px solid rgba(77, 217, 217, 0.3);
    border-radius: 12px;
    font-size: var(--fs-xs);
    color: var(--color-slate-light);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-fast);
    cursor: pointer;
}

.breadcrumb-link:hover {
    background: rgba(77, 217, 217, 0.25);
    border-color: var(--color-accent-cyan);
    color: var(--color-accent-cyan);
}

.breadcrumb-link.active {
    background: rgba(212, 169, 79, 0.2);
    border-color: var(--gold);
    color: var(--gold);
    cursor: default;
}

.breadcrumb-separator {
    color: var(--color-slate-light);
    font-size: 2.5rem;
    user-select: none;
    opacity: 0.6;
    font-weight: 300;
    line-height: 0;
    height: 0;
    display: inline-block;
    vertical-align: middle;
    margin: 0 calc(var(--space-xs) / 2);
}

/* ========== MAIN CONTENT SPACING ========== */
/* Pages with breadcrumbs: push main down to account for fixed nav + breadcrumbs */
.breadcrumbs + main {
    margin-top: 110px; /* Fixed nav (~70px) + breadcrumbs height (~48px) */
}

/* Homepage (no breadcrumbs): smaller margin just for fixed nav */
body:not(:has(.breadcrumbs)) main {
    margin-top: 90px; /* Fixed nav (~70px) + buffer */
}

/* ========== TABLE OF CONTENTS (TOC) ========== */
.wiki-toc {
    position: fixed;
    top: 110px;
    right: var(--space-lg);
    width: 240px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    background: linear-gradient(135deg, rgba(13, 26, 26, 0.9) 0%, rgba(15, 52, 46, 0.9) 100%);
    backdrop-filter: blur(8px);
    border: 2px solid rgba(77, 217, 217, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    z-index: 100;
    margin-bottom: var(--space-lg);
}

.toc-title {
    font-size: var(--fs-small);
    font-weight: 700;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid rgba(77, 217, 217, 0.2);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-item {
    margin-bottom: var(--space-xs);
}

.toc-link {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    color: var(--color-slate-light);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: var(--transition-fast);
    font-size: var(--fs-small);
}

.toc-link:hover {
    color: var(--color-accent-cyan);
    border-left-color: var(--color-accent-cyan);
    padding-left: calc(var(--space-sm) + 4px);
}

.toc-link.active {
    color: var(--color-accent-cyan);
    border-left-color: var(--color-accent-cyan);
    background: rgba(77, 217, 217, 0.1);
    font-weight: 600;
}

/* TOC Scrollbar */
.wiki-toc::-webkit-scrollbar {
    width: 6px;
}

.wiki-toc::-webkit-scrollbar-track {
    background: rgba(77, 217, 217, 0.05);
    border-radius: 3px;
}

.wiki-toc::-webkit-scrollbar-thumb {
    background: rgba(77, 217, 217, 0.3);
    border-radius: 3px;
}

.wiki-toc::-webkit-scrollbar-thumb:hover {
    background: rgba(77, 217, 217, 0.5);
}

/* ========== MOBILE & MEDIUM DESKTOP (≤1199px) - Shared Mobile Menu Styles ========== */
@media (max-width: 1199px) {
    /* Mobile Menu Overlay */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.7);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Mobile Main Nav (Left Sidebar) */
    .mobile-nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        max-width: 80vw;
        background: linear-gradient(135deg, rgba(13, 26, 26, 0.98) 0%, rgba(15, 52, 46, 0.98) 100%);
        backdrop-filter: blur(12px);
        border-right: 2px solid rgba(77, 217, 217, 0.3);
        padding: var(--space-lg);
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
    }

    .mobile-nav-menu.active {
        transform: translateX(0);
    }

    .mobile-nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: var(--space-lg);
        padding-bottom: var(--space-md);
        border-bottom: 2px solid rgba(77, 217, 217, 0.2);
    }

    .mobile-nav-title {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--color-accent-cyan);
    }

    .mobile-nav-close {
        background: none;
        border: none;
        color: var(--color-slate-light);
        cursor: pointer;
        padding: var(--space-xs);
    }

    .mobile-nav-close:hover {
        color: var(--color-accent-cyan);
    }

    .mobile-nav-section {
        margin-bottom: var(--space-lg);
    }

    .mobile-nav-section-title {
        font-size: var(--fs-small);
        font-weight: 700;
        color: var(--gold);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: var(--space-sm);
    }

    .mobile-nav-link {
        display: block;
        padding: var(--space-sm) var(--space-md);
        color: var(--color-text);
        text-decoration: none;
        border-radius: var(--radius-md);
        margin-bottom: var(--space-xs);
        transition: var(--transition-fast);
    }

    .mobile-nav-link:hover,
    .mobile-nav-link.active {
        background: rgba(77, 217, 217, 0.15);
        color: var(--color-accent-cyan);
    }

    /* Mobile Accordions */
    .mobile-accordion-container {
        margin-top: var(--space-xs);
        margin-bottom: var(--space-md);
        padding-left: var(--space-sm);
    }

    .mobile-accordion {
        margin-bottom: var(--space-xs);
    }

    .mobile-accordion-header {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-sm) var(--space-md);
        background: rgba(77, 217, 217, 0.08);
        border: 1px solid rgba(77, 217, 217, 0.2);
        border-radius: var(--radius-md);
        color: var(--color-slate-light);
        font-size: 0.9rem;
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition-fast);
        text-align: left;
    }

    .mobile-accordion-header:hover {
        background: rgba(77, 217, 217, 0.12);
        border-color: var(--color-accent-cyan);
    }

    .accordion-chevron {
        display: inline-block;
        transition: transform 0.3s ease;
        font-size: 1.2rem;
        transform: rotate(90deg);
    }

    .mobile-accordion.active .accordion-chevron {
        transform: rotate(270deg);
    }

    .mobile-accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        padding-left: var(--space-md);
    }

    .mobile-accordion.active .mobile-accordion-content {
        max-height: 500px;
        margin-top: var(--space-xs);
    }

    .mobile-accordion-link {
        display: block;
        padding: var(--space-xs) var(--space-md);
        color: var(--color-text);
        text-decoration: none;
        border-radius: var(--radius-md);
        margin-bottom: var(--space-xs);
        transition: var(--transition-fast);
        font-size: 0.9rem;
    }

    .mobile-accordion-link:hover {
        background: rgba(77, 217, 217, 0.1);
        color: var(--color-accent-cyan);
        padding-left: calc(var(--space-md) + 4px);
    }

    /* Mobile TOC (Right Sidebar) */
    .mobile-toc-menu {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        max-width: 80vw;
        background: linear-gradient(135deg, rgba(13, 26, 26, 0.98) 0%, rgba(15, 52, 46, 0.98) 100%);
        backdrop-filter: blur(12px);
        border-left: 2px solid rgba(77, 217, 217, 0.3);
        padding: var(--space-lg);
        z-index: 1000;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
    }

    .mobile-toc-menu.active {
        transform: translateX(0);
    }
}

/* ========== RESPONSIVE NAV BAR WIDTH & BORDER-RADIUS ========== */
/* Mobile (≤480px): Full width, no rounded corners */
@media (max-width: 480px) {
    .wiki-nav {
        max-width: 100vw;
        border-radius: 0;
        margin: 0;
    }
}

/* Desktop (≥481px): 90vw width with rounded bottom corners */
@media (min-width: 481px) {
    .wiki-nav {
        max-width: 90vw;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        margin: 0 auto;
    }
}

/* ========== MOBILE/TABLET STYLES (≤770px) ========== */
@media (max-width: 770px) {
    /* Hide desktop navigation */
    .nav-links {
        display: none;
    }

    /* Show both mobile menu buttons */
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-container {
        margin: 0 auto;
        padding: 0 var(--space-md);
    }

    /* Hide desktop TOC on mobile */
    .wiki-toc {
        display: none;
    }

    /* Responsive main spacing for mobile */
    .breadcrumbs + main {
        margin-top: 90px;
    }

    body:not(:has(.breadcrumbs)) main {
        margin-top: 80px;
    }
}

/* ========== MEDIUM DESKTOP (770px-1199px) ========== */
@media (min-width: 770px) and (max-width: 1199px) {
    .container {
        max-width: 1200px;
        margin: 0 auto;
    }

    /* Responsive main spacing for medium desktop */
    .breadcrumbs + main {
        margin-top: 100px;
    }

    body:not(:has(.breadcrumbs)) main {
        margin-top: 85px;
    }

    /* Adjust container when TOC is visible */
    .has-toc .container {
        max-width: 1200px;
        margin: 1rem auto 0;
        padding-right: 300px;
    }

    /* Hide desktop navigation, show only left hamburger */
    .nav-links {
        display: none;
    }

    /* Show left hamburger for main nav */
    #mobile-main-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Hide right hamburger (TOC is visible as sidebar) */
    #mobile-toc-menu-btn {
        display: none;
    }

    /* Show desktop TOC sidebar */
    .wiki-toc {
        display: block;
    }

    /* Hide mobile TOC menu */
    .mobile-toc-menu {
        display: none;
    }
}

/* ========== LARGE DESKTOP (≥1200px) ========== */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
        margin: 0 auto;
    }

    /* Adjust container when TOC is visible */
    .has-toc .container {
        max-width: 1200px;
        margin: 1rem auto 0;
        padding-right: 300px;
    }

    /* Show desktop navigation */
    .nav-links {
        display: flex;
    }

    /* Hide all mobile menu buttons */
    .mobile-menu-btn {
        display: none;
    }

    /* Show desktop TOC sidebar */
    .wiki-toc {
        display: block;
    }

    /* Hide all mobile menus */
    .mobile-menu-overlay,
    .mobile-nav-menu,
    .mobile-toc-menu {
        display: none;
    }
}

/* ========== EXTRA LARGE DESKTOP (≥1520px) ========== */
@media (min-width: 1520px) {
    /* Position TOC relative to viewport center when screen is wide enough */
    /* Formula: (viewport width - container width) / 2 + margin */
    /* This centers the TOC relative to the 1200px container */
    .has-toc .wiki-toc {
        right: calc((100vw - 1200px) / 2 + var(--space-lg));
    }
}

/* ========== UTILITY CLASSES ========== */
.nav-badge {
    display: inline-block;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 700;
    background: var(--burgundy);
    color: white;
    border-radius: 4px;
    margin-left: var(--space-xs);
}

.nav-icon-only {
    padding: var(--space-sm);
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
}

/* ========== UNIT FOOTER NAVIGATION ========== */
.unit-footer {
    text-align: center;
    margin-top: var(--space-lg);
    padding: var(--space-lg) var(--space-xl);
    border-top: 2px solid var(--color-primary);
    background: rgba(13, 26, 26, 0.95);
    border-radius: var(--radius-md);
}

.unit-footer p {
    margin: 0;
    font-size: var(--fs-body);
}

.unit-footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.unit-footer a:hover {
    color: var(--color-accent-cyan);
    background: rgba(77, 217, 217, 0.1);
}