/* css/navigation.css - Modern Navigation with Glassmorphism */

/* Main Navigation Container */
.main-navigation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: var(--surface-dark);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.main-navigation.scrolled {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(25px) saturate(200%);
    border-bottom: 1px solid var(--border-hover);
    box-shadow: var(--shadow);
}

/* Navigation Container */
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

/* Brand/Logo */
.nav-brand {
    flex-shrink: 0;
}

.nav-logo-combo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-logo-combo:hover {
    transform: scale(1.05);
}

.nav-logo-icon {
    width: 64px;
    height: 64px;
    transition: all 0.3s ease;
}

.nav-logo-combo:hover .nav-logo-icon {
    transform: scale(1.1);
}

.nav-brand-text {
    font-size: var(--font-2xl);
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.nav-logo-combo:hover .nav-brand-text {
    filter: brightness(1.2);
}

/* Main Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 1);
    background: rgba(100, 255, 218, 0.2);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(100, 255, 218, 0.3);
}

.nav-icon {
    flex-shrink: 0;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.nav-link:hover .nav-icon {
    opacity: 1;
}

/* Dropdown Styles */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    cursor: pointer;
}

.nav-chevron {
    transition: transform 0.3s ease;
    opacity: 0.7;
}

.nav-dropdown:hover .nav-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 0;
    min-width: 280px;
    background: rgba(31, 41, 55, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    list-style: none;
    margin: 0;
    padding: var(--spacing-sm);
    z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.nav-dropdown-item {
    margin-bottom: var(--spacing-xs);
}

.nav-dropdown-item:last-child {
    margin-bottom: 0;
}

.nav-dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
}

.nav-dropdown-link:hover {
    color: rgba(255, 255, 255, 1);
    background: rgba(100, 255, 218, 0.15);
    border-color: var(--border-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(100, 255, 218, 0.2);
}

.nav-category-emoji {
    font-size: var(--font-lg);
    flex-shrink: 0;
    width: 32px;
    text-align: center;
}

.nav-category-content {
    display: flex;
    flex-direction: column;
}

.nav-category-title {
    font-weight: 600;
    font-size: var(--font-sm);
    margin-bottom: 2px;
}

.nav-category-desc {
    font-size: var(--font-xs);
    opacity: 0.7;
    color: rgba(255, 255, 255, 0.6);
}

.nav-dropdown-link:hover .nav-category-desc {
    opacity: 1;
    color: rgba(255, 255, 255, 0.8);
}

/* Admin Button */
.nav-admin-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    margin-left: var(--spacing-md);
}

.nav-admin-btn:hover {
    color: var(--primary-color);
    background: rgba(100, 255, 218, 0.1);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

/* Mobile Menu Toggle */
.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    gap: 4px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1001;
    min-width: 44px;
    min-height: 44px;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.2);
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    pointer-events: auto;
    touch-action: manipulation;
}

.nav-mobile-toggle:hover,
.nav-mobile-toggle:focus {
    background: rgba(100, 255, 218, 0.1);
    border-color: var(--border-hover);
    outline: none;
}

.nav-mobile-toggle:active {
    transform: scale(0.95);
}

.nav-hamburger-line {
    width: 20px;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

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

.nav-mobile-toggle.active .nav-hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-mobile-toggle.active .nav-hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.nav-mobile-toggle.active .nav-hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: calc(100% + var(--spacing-sm));
        left: var(--spacing-md);
        right: var(--spacing-md);
        background: rgba(31, 41, 55, 0.95);
        backdrop-filter: blur(20px) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-10px);
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        width: 100%;
        justify-content: flex-start;
        margin-bottom: var(--spacing-xs);
        min-height: 44px;
        -webkit-tap-highlight-color: rgba(100, 255, 218, 0.2);
    }
    
    .nav-link:active {
        background: rgba(100, 255, 218, 0.15);
        transform: scale(0.98);
    }
    
    .nav-dropdown-menu {
        position: static;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        margin-top: var(--spacing-sm);
        margin-left: var(--spacing-md);
        padding: var(--spacing-sm);
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: all 0.3s ease;
        display: none;
    }
    
    .nav-dropdown-menu:not(.mobile-hidden) {
        display: block;
    }
    
    .nav-dropdown-link {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-xs);
        border-radius: var(--radius-xs);
        min-height: 44px;
        -webkit-tap-highlight-color: rgba(100, 255, 218, 0.2);
    }
    
    .nav-dropdown-link:active {
        background: rgba(100, 255, 218, 0.15);
        transform: scale(0.98);
    }
    
    .nav-admin-btn {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
    
    .nav-logo-icon {
        width: 64px;
        height: 64px;
    }
    
    .nav-brand-text {
        font-size: 1.25rem;
    }
    
    .nav-logo-combo {
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-brand-text {
        font-size: var(--font-xl);
    }
    
    .nav-menu {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .nav-dropdown-menu {
        min-width: auto;
        margin-left: var(--spacing-md);
    }
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* Accessibility & Performance */
@media (prefers-contrast: high) {
    .main-navigation {
        background: rgba(0, 0, 0, 0.9);
        border-bottom: 2px solid var(--primary-color);
    }
    
    .nav-link {
        border: 1px solid rgba(255, 255, 255, 0.3);
    }
    
    .nav-dropdown-menu {
        border: 2px solid var(--primary-color);
    }
    
    .nav-mobile-toggle {
        border: 2px solid var(--primary-color);
    }
    
    .nav-hamburger-line {
        background: var(--primary-color);
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-link,
    .nav-dropdown-menu,
    .nav-chevron,
    .nav-hamburger-line,
    .nav-mobile-toggle,
    .nav-menu {
        transition: none;
    }
    
    .nav-link::before {
        display: none;
    }
    
    .nav-mobile-toggle.active .nav-hamburger-line:nth-child(1),
    .nav-mobile-toggle.active .nav-hamburger-line:nth-child(3) {
        transition: none;
    }
}

/* Focus states for accessibility */
.nav-link:focus,
.nav-dropdown-link:focus,
.nav-mobile-toggle:focus,
.nav-admin-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}