/**
 * Mobile-Friendly Menu System
 * Responsive, Touch-Optimized Navigation
 * 
 * @package MentoraTutorSystem
 * @version 2.0.0
 */

/* ============================================================================
   Loading State
   ============================================================================ */

body.menu-loading .mobile-menu-toggle {
    opacity: 0.5;
    pointer-events: none;
}

body.menu-loading .mobile-menu-toggle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: menuLoadingSpinner 0.6s linear infinite;
}

@keyframes menuLoadingSpinner {
    to { transform: rotate(360deg); }
}

/* ============================================================================
   Mobile Menu Toggle Button
   ============================================================================ */

.mobile-menu-toggle {
    display: none; /* Hidden on desktop */
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    background: #1a1a1a;
    border: none;
    border-radius: 8px;
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.mobile-menu-toggle:hover {
    background: #2d2d2d;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.mobile-menu-toggle:active {
    transform: translateY(0);
}

.mobile-menu-toggle .hamburger-icon {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    height: 18px;
}

.mobile-menu-toggle .line {
    display: block;
    width: 100%;
    height: 2px;
    background: #ffffff;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Animated hamburger icon */
.mobile-menu-toggle.active .line-1 {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .line-2 {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-menu-toggle.active .line-3 {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu-toggle .menu-text {
    display: block;
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 6px;
}

/* ============================================================================
   Mobile Menu Overlay
   ============================================================================ */

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 9990;
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.mobile-menu-open .mobile-menu-overlay {
    opacity: 1;
}

/* ============================================================================
   Responsive Menu Container
   ============================================================================ */

/* Mobile: < 768px */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu-overlay {
        display: block;
    }
    
    /* Main menu container - flexible selectors */
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation,
    nav[role="navigation"],
    nav:has(.menu) {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        background: #ffffff;
        z-index: 9995;
        overflow-y: auto;
        transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
        padding: 80px 20px 40px;
    }
    
    .menu-wrapper.mobile-active,
    nav.main-navigation.mobile-active,
    #site-navigation.mobile-active,
    nav[role="navigation"].mobile-active,
    nav:has(.menu).mobile-active {
        right: 0;
    }
    
    /* Menu list styles */
    .menu-wrapper ul,
    nav.main-navigation ul,
    #site-navigation ul {
        display: flex !important;
        flex-direction: column;
        gap: 0;
        padding: 0;
        margin: 0;
        list-style: none;
    }
    
    /* Menu items */
    .menu-wrapper li,
    nav.main-navigation li,
    #site-navigation li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .menu-wrapper li:last-child,
    nav.main-navigation li:last-child,
    #site-navigation li:last-child {
        border-bottom: none;
    }
    
    /* Menu links */
    .menu-wrapper a,
    nav.main-navigation a,
    #site-navigation a {
        display: block;
        padding: 16px 20px;
        color: #1a1a1a;
        text-decoration: none;
        font-size: 16px;
        font-weight: 500;
        transition: all 0.3s ease;
        border-radius: 4px;
        position: relative; /* Fix for floating toggle button */
    }
    
    .menu-wrapper a:hover,
    nav.main-navigation a:hover,
    #site-navigation a:hover {
        background: #f8f9fa;
        color: #2563eb;
        padding-left: 24px;
    }
    
    /* Submenu styles for mobile (2nd level) - Professional design */
    .menu-wrapper .sub-menu,
    nav.main-navigation .sub-menu,
    #site-navigation .sub-menu {
        position: static !important;
        width: 100% !important;
        box-shadow: none !important;
        background: linear-gradient(to right, #f0f7ff 0%, #f8fafc 100%);
        padding-left: 0;
        display: none !important;
        border-left: 3px solid #3b82f6;
        margin: 6px 0 6px 16px;
        border-radius: 0 6px 6px 0;
        overflow: hidden;
    }
    
    .menu-item-has-children.submenu-open > .sub-menu {
        display: flex !important;
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .menu-wrapper .sub-menu a,
    nav.main-navigation .sub-menu a,
    #site-navigation .sub-menu a {
        font-size: 14px;
        font-weight: 400;
        padding: 13px 18px 13px 24px;
        color: #1e40af;
        position: relative;
    }
    
    .menu-wrapper .sub-menu a:hover,
    nav.main-navigation .sub-menu a:hover,
    #site-navigation .sub-menu a:hover {
        background: rgba(59, 130, 246, 0.08);
        color: #1d4ed8;
        padding-left: 28px;
    }
    
    /* Add subtle indicator for submenu items */
    .menu-wrapper .sub-menu > li > a::before,
    nav.main-navigation .sub-menu > li > a::before,
    #site-navigation .sub-menu > li > a::before {
        content: '›';
        position: absolute;
        left: 12px;
        color: #60a5fa;
        font-size: 16px;
        font-weight: 600;
        opacity: 0.6;
    }
    
    /* Third level submenus (nested deeper) - Enhanced styling */
    .menu-wrapper .sub-menu .sub-menu,
    nav.main-navigation .sub-menu .sub-menu,
    #site-navigation .sub-menu .sub-menu {
        background: linear-gradient(to right, #e0f2fe 0%, #eff6ff 100%);
        border-left: 2px solid #60a5fa;
        margin: 4px 0 4px 12px;
        border-radius: 0 4px 4px 0;
    }
    
    .menu-wrapper .sub-menu .sub-menu a,
    nav.main-navigation .sub-menu .sub-menu a,
    #site-navigation .sub-menu .sub-menu a {
        font-size: 13px;
        font-weight: 400;
        padding: 11px 16px 11px 22px;
        color: #1e3a8a;
    }
    
    .menu-wrapper .sub-menu .sub-menu a:hover,
    nav.main-navigation .sub-menu .sub-menu a:hover,
    #site-navigation .sub-menu .sub-menu a:hover {
        background: rgba(96, 165, 250, 0.12);
        color: #1e40af;
        padding-left: 26px;
    }
    
    /* Fourth level (if needed) */
    .menu-wrapper .sub-menu .sub-menu .sub-menu,
    nav.main-navigation .sub-menu .sub-menu .sub-menu,
    #site-navigation .sub-menu .sub-menu .sub-menu {
        background: linear-gradient(to right, #dbeafe 0%, #e0f2fe 100%);
        border-left: 2px solid #93c5fd;
        margin: 3px 0 3px 10px;
    }
    
    /* Menu item with children indicator - Professional toggle design */
    .menu-item-has-children > a::after,
    li.menu-item:has(ul) > a::after {
        content: '+';
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
        width: 28px;
        height: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(37, 99, 235, 0.08);
        border: 1.5px solid #2563eb;
        border-radius: 6px;
        font-size: 20px;
        font-weight: 400;
        line-height: 1;
        color: #2563eb;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }
    
    /* Hover effect for parent link (affects icon) */
    .menu-item-has-children > a:hover::after,
    li.menu-item:has(ul) > a:hover::after {
        background: rgba(37, 99, 235, 0.15);
        border-color: #1d4ed8;
        transform: translateY(-50%) scale(1.05);
    }
    
    /* Change to minus when open - filled style */
    .menu-item-has-children.submenu-open > a::after,
    li.menu-item.submenu-open:has(ul) > a::after {
        content: '−';
        background: #2563eb;
        color: #ffffff;
        border-color: #2563eb;
        transform: translateY(-50%) rotate(180deg);
    }
    
    /* Nested submenu items (2nd level) - refined styling */
    .sub-menu .menu-item-has-children > a::after,
    .sub-menu li.menu-item:has(ul) > a::after {
        width: 24px;
        height: 24px;
        font-size: 18px;
        background: rgba(59, 130, 246, 0.1);
        border-color: #3b82f6;
        color: #3b82f6;
        right: 12px;
    }
    
    /* Nested submenu items when open */
    .sub-menu .menu-item-has-children.submenu-open > a::after,
    .sub-menu li.menu-item.submenu-open:has(ul) > a::after {
        background: #3b82f6;
        color: #ffffff;
        border-color: #3b82f6;
    }
    
    /* Third level submenu indicators (3rd level) */
    .sub-menu .sub-menu .menu-item-has-children > a::after,
    .sub-menu .sub-menu li.menu-item:has(ul) > a::after {
        width: 22px;
        height: 22px;
        font-size: 16px;
        background: rgba(96, 165, 250, 0.12);
        border-color: #60a5fa;
        color: #60a5fa;
    }
    
    .sub-menu .sub-menu .menu-item-has-children.submenu-open > a::after,
    .sub-menu .sub-menu li.menu-item.submenu-open:has(ul) > a::after {
        background: #60a5fa;
        color: #ffffff;
        border-color: #60a5fa;
    }
    
    /* Ensure all submenu items are visible when parent is open */
    .menu-item-has-children.submenu-open > .sub-menu,
    .menu-item-has-children.submenu-open > ul,
    li.menu-item.submenu-open > .sub-menu,
    li.menu-item.submenu-open > ul {
        display: flex !important;
        flex-direction: column;
    }
    
    /* CTA button mobile styles */
    .menu-cta-button a,
    .cta-emerald a {
        background: linear-gradient(135deg, #3b82f6 0%, #10b981 100%) !important;
        color: #ffffff !important;
        text-align: center;
        padding: 14px 24px !important;
        border-radius: 8px;
        font-weight: 600;
        margin: 10px 0;
    }
    
    .menu-cta-button a:hover,
    .cta-emerald a:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    }
}

/* Tablet: 768px - 992px (Optional - can be removed if not needed) */
@media (min-width: 768px) and (max-width: 992px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu-overlay {
        display: block;
    }
    
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation {
        max-width: 380px;
    }
}

/* ============================================================================
   FIX: Submenu Toggle Positioning
   ============================================================================ */

@media (max-width: 767px) {
    /* Ensure the parent is the anchor for the absolute pseudo-element */
    .menu-item-has-children {
        position: relative;
    }

    .menu-wrapper a,
    nav.main-navigation a,
    #site-navigation a {
        position: relative; /* Anchor for the + icon */
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-right: 50px; /* Make room for the toggle icon */
    }

    /* Fix the floating blue box from the screenshot */
    .menu-item-has-children > a::after,
    li.menu-item:has(ul) > a::after {
        content: '+';
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
        width: 30px;
        height: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(37, 99, 235, 0.1); /* Light blue background */
        border: 1px solid #2563eb;
        border-radius: 4px;
        font-size: 18px;
        line-height: 1;
        transition: all 0.2s ease;
    }

    .menu-item-has-children.submenu-open > a::after {
        content: '−';
        background: #2563eb;
        color: #fff;
    }

    /* Ensure sub-menus don't overlap or create whitespace gaps */
    .menu-wrapper .sub-menu {
        margin-left: 0 !important;
        padding-left: 15px;
        border-left: 2px solid #e5e7eb;
        background: #fafafa !important;
    }
}

.menu-wrapper a:focus,
nav.main-navigation a:focus,
#site-navigation a:focus {
    outline: 2px solid #2563eb;
    outline-offset: -2px;
    background: #e0f2fe;
}

/* ============================================================================
   Reduced Motion Support
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    .mobile-menu-toggle,
    .mobile-menu-toggle .line,
    .mobile-menu-overlay,
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation {
        transition: none !important;
        animation: none !important;
    }
}

/* ============================================================================
   Dark Mode Support
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    .mobile-menu-toggle {
        background: #374151;
    }
    
    .mobile-menu-toggle:hover {
        background: #4b5563;
    }
    
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation {
        background: #1f2937;
    }
    
    .menu-wrapper a,
    nav.main-navigation a,
    #site-navigation a {
        color: #f9fafb;
    }
    
    .menu-wrapper a:hover,
    nav.main-navigation a:hover,
    #site-navigation a:hover {
        background: #374151;
    }
    
    .menu-wrapper li,
    nav.main-navigation li,
    #site-navigation li {
        border-bottom-color: #374151;
    }
}

/* ============================================================================
   Landscape Orientation Adjustments
   ============================================================================ */

@media (max-width: 767px) and (orientation: landscape) {
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation {
        padding: 60px 20px 30px;
    }
    
    .menu-wrapper a,
    nav.main-navigation a,
    #site-navigation a {
        padding: 12px 20px;
        font-size: 15px;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    .mobile-menu-toggle,
    .mobile-menu-overlay {
        display: none !important;
    }
    
    .menu-wrapper,
    nav.main-navigation,
    #site-navigation {
        position: static !important;
        width: 100% !important;
        max-width: none !important;
        box-shadow: none !important;
    }
}

/* ============================================================================
   High Contrast Mode
   ============================================================================ */

@media (prefers-contrast: high) {
    .mobile-menu-toggle {
        border: 2px solid currentColor;
    }
    
    .menu-wrapper a,
    nav.main-navigation a,
    #site-navigation a {
        border: 1px solid transparent;
    }
    
    .menu-wrapper a:focus,
    nav.main-navigation a:focus,
    #site-navigation a:focus {
        border-color: currentColor;
    }
}

/* ============================================================================
   Animation Performance Optimization
   ============================================================================ */

.mobile-menu-toggle,
.mobile-menu-toggle .line,
.mobile-menu-overlay,
.menu-wrapper,
nav.main-navigation,
#site-navigation {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* ============================================================================
   Scrollbar Styling for Mobile Menu
   ============================================================================ */

.menu-wrapper::-webkit-scrollbar,
nav.main-navigation::-webkit-scrollbar,
#site-navigation::-webkit-scrollbar {
    width: 6px;
}

.menu-wrapper::-webkit-scrollbar-track,
nav.main-navigation::-webkit-scrollbar-track,
#site-navigation::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.menu-wrapper::-webkit-scrollbar-thumb,
nav.main-navigation::-webkit-scrollbar-thumb,
#site-navigation::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

.menu-wrapper::-webkit-scrollbar-thumb:hover,
nav.main-navigation::-webkit-scrollbar-thumb:hover,
#site-navigation::-webkit-scrollbar-thumb:hover {
    background: #555;
}