/**
 * ============================================
 * PROFESSIONAL NAVIGATION MENU STYLES (REFACTORED)
 * ============================================
 * Fixed issues:
 * - Proper multi-level dropdown positioning
 * - Administration menu dropdown positioning
 * - Viewport boundary detection
 * - Improved mobile menu behavior
 * Compatible with Bootstrap 5
 * ============================================
 */

/* ================= CSS CUSTOM PROPERTIES ================= */
:root {
    /* Primary Colors - TCM Teal */
    --nav-primary: var(--brand-primary);
    --nav-primary-dark: var(--brand-primary-dark);
    --nav-primary-light: var(--brand-primary-light);

    --bg-navbar-glass: rgba(244, 248, 248, 0.96);

    /* Accent Colors - Brand Gold */
    --nav-accent: var(--brand-gold-dark);
    --nav-accent-hover: var(--brand-gold);

    /* Neutral Colors - Teal-tinted grays */
    --nav-white: #ffffff;
    --nav-light: #f4f8f8;
    --nav-gray-100: #f0f5f5;
    --nav-gray-200: #e2eaea;
    --nav-gray-300: #c8d8d8;
    --nav-gray-500: #6b8080;
    --nav-gray-700: #3d5252;
    --nav-gray-900: #1a2d2d;

    /* Shadow Variables */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Animation Timing */
    --transition-fast: 150ms;
    --transition-normal: 250ms;
    --transition-slow: 350ms;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    /* Spacing */
    --nav-padding-x: 16px;
    --nav-padding-y: 10px;

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-submenu: 1010;
    --z-mobile-menu: 1020;
}

/* ================= TOP UTILITY BAR ================= */
.top-bar {
    background: linear-gradient(135deg, var(--nav-gray-900) 0%, var(--nav-gray-700) 100%);
    padding: 8px 0;
    font-size: 0.85rem;
    position: relative;
    z-index: 1030;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--transition-fast) ease;
    white-space: nowrap;
}

.top-bar-item:hover,
.top-bar-item:focus {
    color: var(--nav-accent);
    text-decoration: none;
}

.top-bar-item i {
    font-size: 0.9rem;
    width: 16px;
    text-align: center;
}

.top-bar-right a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--nav-white);
    transition: all var(--transition-normal) ease;
}

.top-bar-right a:hover {
    background: var(--nav-accent);
    color: var(--nav-gray-900);
    transform: translateY(-2px);
}

.top-bar-right a:focus {
    outline: 2px solid var(--nav-accent);
    outline-offset: 2px;
}

/* ================= MAIN NAVBAR ================= */
.navbar {
    padding: 12px 0;
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--nav-primary) 0%, var(--nav-primary-dark) 100%) !important;
    transition: all var(--transition-normal) ease;
}

/* Sticky navbar effect */
.navbar.sticky-top.scrolled {
    padding: 8px 0;
    box-shadow: var(--shadow-lg);
}

/* Brand Logo */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform var(--transition-normal) ease;
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.navbar-brand img {
    transition: transform var(--transition-normal) ease;
}

.navbar-brand:hover img {
    transform: rotate(-5deg);
}

.brand-text {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--nav-white);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* ================= NAVIGATION LINKS ================= */
.navbar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--nav-padding-y) var(--nav-padding-x);
    color: rgba(255, 255, 255, 0.9) !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal) ease;
    position: relative;
    overflow: hidden;
}

/* Hover effect with underline animation */
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--nav-accent);
    transition: all var(--transition-normal) ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link:focus::after {
    width: calc(100% - 32px);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--nav-accent) !important;
    background: rgba(255, 255, 255, 0.1);
}

/* Active state */
.navbar-nav .nav-link.active {
    color: var(--nav-accent) !important;
}

.navbar-nav .nav-link.active::after {
    width: calc(100% - 32px);
}

/* Dropdown toggle arrow */
.navbar-nav .dropdown-toggle::after {
    margin-left: 6px;
    transition: transform var(--transition-fast) ease;
}

.navbar-nav .dropdown:hover .dropdown-toggle::after,
.navbar-nav .dropdown-toggle:focus::after {
    transform: rotate(180deg);
}

/* ================= MOBILE TOGGLE BUTTON ================= */
.custom-toggler {
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    background: transparent;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    transition: all var(--transition-normal) ease;
}

.custom-toggler:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--nav-accent);
}

.custom-toggler:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(203, 163, 41, 0.4);
}

.toggler-icon-bar {
    display: block;
    width: 22px;
    height: 3px;
    background: #ffffff !important;
    border-radius: 2px;
    transition: all var(--transition-normal) ease;
    opacity: 1;
}

/* Animated hamburger to X */
.custom-toggler[aria-expanded="true"] .toggler-icon-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.custom-toggler[aria-expanded="true"] .toggler-icon-bar:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.custom-toggler[aria-expanded="true"] .toggler-icon-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ================= DROPDOWN MENUS - REFACTORED ================= */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    padding: 12px 0;
    margin-top: 4px;
    background: var(--nav-white);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: var(--z-dropdown);
}

/* Active state for dropdown */
.dropdown-menu.show {
    display: block;
}

/* Dropdown items */
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--nav-gray-700);
    text-decoration: none;
    transition: all var(--transition-fast) ease;
    position: relative;
}

.dropdown-item i {
    width: 18px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--nav-primary);
    transition: transform var(--transition-fast) ease;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--nav-gray-100);
    color: var(--nav-primary-dark);
    padding-left: 24px;
}

.dropdown-item:hover i,
.dropdown-item:focus i {
    transform: scale(1.1);
}

/* Dropdown divider */
.dropdown-divider {
    margin: 8px 0;
    border-top-color: var(--nav-gray-200);
}

/* ================= ADMINISTRATION MENU - FIXED POSITIONING ================= */
.mega-dropdown {
    position: relative !important;
    /* Changed from static */
}

.mega-menu {
    min-width: 280px;
    max-width: 320px;
    left: 50%;
    transform: translateX(-50%);
}

/* Adjust mega menu to not go off-screen */
.mega-dropdown .mega-menu {
    left: auto;
    right: auto;
    transform: none;
}

/* Ensure administration dropdown stays within viewport */
.admin-dropdown-menu {
    right: 0;
    left: auto;
}

/* ================= SUBMENU (LEVEL 2) - REFACTORED ================= */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu>.dropdown-item {
    position: relative;
    cursor: pointer;
}

.submenu-arrow {
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform var(--transition-fast) ease;
}

.dropdown-submenu:hover .submenu-arrow,
.dropdown-submenu:focus-within .submenu-arrow,
.dropdown-submenu.open>.dropdown-item .submenu-arrow {
    transform: translateX(4px);
}

/* Submenu positioning - default to right side */
.submenu-menu {
    position: absolute;
    top: 0;
    left: 100%;
    right: auto;
    margin-left: 2px;
    margin-top: -4px;
    min-width: 200px;
    display: none;
    z-index: var(--z-submenu);
}

/* Show submenu when parent is open */
.dropdown-submenu.open>.submenu-menu {
    display: block;
}

/* Flip submenu to left when there's not enough space on right */
.dropdown-submenu.dropstart .submenu-menu {
    left: auto;
    right: 100%;
    margin-left: 0;
    margin-right: 2px;
}

/* Submenu hover behavior - Desktop */
@media (min-width: 992px) {
    .dropdown:hover>.dropdown-menu {
        display: block;
    }

    .dropdown-submenu:hover>.submenu-menu,
    .dropdown-submenu:focus-within>.submenu-menu {
        display: block;
    }

    .dropdown-submenu.open>.submenu-menu {
        display: block;
    }
}

/* ================= USER DROPDOWN ================= */
.user-dropdown {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar i {
    font-size: 1.5rem;
}

.user-name {
    font-weight: 600;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-menu-end {
    right: 0;
    left: auto !important;
    transform: none;
}

/* ================= MOBILE RESPONSIVE ================= */
@media (max-width: 991.98px) {

    /* Mobile menu container */
    .navbar-collapse {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 350px;
        height: 100vh;
        background: linear-gradient(180deg, var(--nav-primary-dark) 0%, var(--nav-primary) 100%);
        padding: 80px 20px 20px;
        transition: right var(--transition-slow) ease;
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        z-index: var(--z-mobile-menu);
    }

    .navbar-collapse.show {
        right: 0;
    }

    /* Mobile overlay */
    body.menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        z-index: calc(var(--z-mobile-menu) - 1);
    }

    /* Mobile nav links */
    .navbar-nav {
        padding: 0;
    }

    .navbar-nav .nav-link {
        padding: 14px 16px;
        font-size: 1rem;
        border-radius: var(--radius-sm);
        margin-bottom: 4px;
        justify-content: space-between;
    }

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link:focus {
        background: rgba(255, 255, 255, 0.15);
    }

    /* Mobile dropdowns */
    .dropdown-menu {
        position: static;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.15);
        border-radius: var(--radius-sm);
        margin: 8px 0;
        padding: 8px 0;
        display: none;
    }

    .dropdown-menu.show {
        display: block;
    }

    .dropdown-item {
        color: rgba(255, 255, 255, 0.9);
        padding: 12px 24px;
    }

    .dropdown-item:hover,
    .dropdown-item:focus {
        background: rgba(255, 255, 255, 0.1);
        color: var(--nav-accent);
    }

    .dropdown-item i {
        color: var(--nav-accent);
    }

    /* Mobile submenu */
    .submenu-menu {
        position: static;
        margin-left: 0;
        margin-top: 0;
        background: rgba(0, 0, 0, 0.1);
    }

    .dropdown-submenu.open>.submenu-menu {
        display: block;
    }

    /* Mobile user dropdown */
    .user-dropdown {
        padding-top: 16px;
        margin-top: 16px;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }

    /* Mobile mega menu adjustments */
    .mega-menu {
        min-width: 100%;
        max-width: 100%;
        transform: none;
    }
}

/* ================= TABLET ADJUSTMENTS ================= */
@media (min-width: 768px) and (max-width: 991.98px) {
    .brand-text {
        font-size: 1.1rem;
    }

    .navbar-nav .nav-link {
        font-size: 0.9rem;
        padding: 8px 12px;
    }
}

/* ================= KEYBOARD ACCESSIBILITY ================= */
.navbar-nav .nav-link:focus-visible,
.dropdown-item:focus-visible,
.navbar-brand:focus-visible {
    outline: 2px solid var(--nav-accent);
    outline-offset: 2px;
}

/* Skip to content link for accessibility - already uses var(--nav-primary), no change needed */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--nav-primary);
    color: var(--nav-white);
    padding: 8px 16px;
    z-index: 9999;
    transition: top var(--transition-fast) ease;
}

.skip-link:focus {
    top: 0;
}

/* ================= ANIMATIONS ================= */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Dropdown animation - desktop only */
@media (min-width: 992px) {
    .dropdown-menu.show {
        animation: fadeInUp var(--transition-normal) ease;
    }

    .submenu-menu.show {
        animation: slideInRight var(--transition-normal) ease;
    }
}

/* ================= REDUCED MOTION ================= */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ================= HIGH CONTRAST MODE ================= */
@media (prefers-contrast: high) {
    .navbar {
        background: var(--nav-gray-900) !important;
    }

    .nav-link {
        border: 1px solid transparent;
    }

    .nav-link:hover,
    .nav-link:focus {
        border-color: var(--nav-white);
    }

    .dropdown-menu {
        border: 2px solid var(--nav-gray-900);
    }
}

/* ================= PRINT STYLES ================= */
@media print {

    .top-bar,
    .navbar-toggler,
    .dropdown-menu {
        display: none !important;
    }

    .navbar {
        position: static !important;
        background: var(--nav-white) !important;
        box-shadow: none !important;
    }

    .nav-link {
        color: var(--nav-gray-900) !important;
    }
}