/**
 * HVAC Navigation Enhanced
 * Professional dropdown navigation with smooth animations and best practices
 * 
 * @version 2.0.0
 * @since 2025-08-21
 */

/* ===== BASE NAVIGATION STRUCTURE ===== */

.hvac-trainer-menu-wrapper {
    background: #ffffff;
    border-bottom: 2px solid #f0f0f0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1000;
    width: 100%;
}

.hvac-trainer-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== MAIN MENU ===== */

.hvac-trainer-menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0;
}

.hvac-trainer-menu > .menu-item {
    position: relative;
    margin: 0;
    padding: 0;
}

/* ===== MENU LINKS ===== */

.hvac-trainer-menu .menu-item > a {
    display: inline-flex;
    align-items: center;
    padding: 18px 16px;
    color: #374151;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s ease;
    position: relative;
}

/* Hover effect with bottom border */
.hvac-trainer-menu .menu-item > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--hvac-primary-500, #0274be);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.hvac-trainer-menu .menu-item > a:hover::after,
.hvac-trainer-menu .menu-item.current-menu-item > a::after {
    width: calc(100% - 32px);
}

.hvac-trainer-menu .menu-item > a:hover {
    color: var(--hvac-primary-500, #0274be);
    background: rgba(2, 116, 190, 0.05);
}

/* ===== DROPDOWN TOGGLE ARROWS ===== */

.hvac-trainer-menu .menu-item-has-children > a {
    padding-right: 30px;
}

.hvac-trainer-menu .menu-item-has-children > a::before {
    content: '▾';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    transition: transform 0.3s ease;
    color: #9ca3af;
}

.hvac-trainer-menu .menu-item-has-children:hover > a::before,
.hvac-trainer-menu .menu-item-has-children.menu-open > a::before {
    transform: translateY(-50%) rotate(180deg);
    color: var(--hvac-primary-500, #0274be);
}

/* Hide Astra's toggle buttons - we use CSS hover instead */
.hvac-trainer-menu .ast-menu-toggle {
    display: none !important;
}

/* ===== DROPDOWN MENUS ===== */

.hvac-trainer-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    padding: 8px 0;
    margin: 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 9999;
}

/* Show dropdown on hover */
.hvac-trainer-menu .menu-item-has-children:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Dropdown menu items */
.hvac-trainer-menu .sub-menu .menu-item {
    margin: 0;
    width: 100%;
}

.hvac-trainer-menu .sub-menu .menu-item > a {
    display: block;
    padding: 10px 20px;
    color: #4b5563;
    font-size: 14px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

/* Sliding hover effect for dropdown items */
.hvac-trainer-menu .sub-menu .menu-item > a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--hvac-primary-500, #0274be);
    transform: translateX(-3px);
    transition: transform 0.3s ease;
}

.hvac-trainer-menu .sub-menu .menu-item > a:hover {
    color: var(--hvac-primary-500, #0274be);
    background: rgba(2, 116, 190, 0.05);
    padding-left: 24px;
}

.hvac-trainer-menu .sub-menu .menu-item > a:hover::before {
    transform: translateX(0);
}

/* ===== ICONS IN MENU ===== */

.hvac-trainer-menu .dashicons {
    margin-right: 8px;
    font-size: 16px;
    line-height: 1;
    vertical-align: middle;
}

/* ===== SPECIAL MENU ITEMS ===== */

/* Help menu positioned to the right */
.hvac-trainer-menu .hvac-help-menu-item {
    margin-left: auto;
}

.hvac-trainer-menu .hvac-help-menu-item > a {
    padding: 18px 12px;
    min-width: 44px;
    justify-content: center;
}

.hvac-trainer-menu .hvac-help-menu-item .dashicons {
    margin-right: 0;
    font-size: 18px;
}

/* Current/active menu items */
.hvac-trainer-menu .current-menu-item > a,
.hvac-trainer-menu .current-menu-ancestor > a {
    color: var(--hvac-primary-500, #0274be);
    font-weight: 600;
}

/* ===== MOBILE NAVIGATION ===== */

.hvac-hamburger-menu {
    display: none;
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
    position: relative;
    z-index: 1001;
}

.hvac-hamburger-line {
    display: block;
    width: 25px;
    height: 2px;
    background: #374151;
    margin: 6px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Hamburger animation */
.hvac-hamburger-menu.active .hvac-hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hvac-hamburger-menu.active .hvac-hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.hvac-hamburger-menu.active .hvac-hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 992px) {
    .hvac-hamburger-menu {
        display: block;
    }
    
    .hvac-trainer-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 20px;
    }
    
    .hvac-trainer-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: #ffffff;
        border-top: 1px solid #e5e7eb;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }
    
    .hvac-trainer-menu.active {
        display: flex;
    }
    
    .hvac-trainer-menu > .menu-item {
        width: 100%;
        border-bottom: 1px solid #f3f4f6;
    }
    
    .hvac-trainer-menu .menu-item > a {
        padding: 16px 20px;
        width: 100%;
    }
    
    .hvac-trainer-menu .menu-item > a::after {
        display: none;
    }
    
    /* Mobile dropdowns */
    .hvac-trainer-menu .menu-item-has-children > a::before {
        content: '▾';
        right: 20px;
    }
    
    .hvac-trainer-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background: #f9fafb;
        display: none;
        padding: 0;
    }
    
    .hvac-trainer-menu .menu-item-has-children.menu-open > .sub-menu {
        display: block;
    }
    
    .hvac-trainer-menu .sub-menu .menu-item > a {
        padding-left: 40px;
    }
    
    .hvac-trainer-menu .sub-menu .menu-item > a:hover {
        padding-left: 44px;
    }
}

/* ===== ACCESSIBILITY ===== */

.hvac-trainer-menu a:focus {
    outline: 2px solid var(--hvac-primary-500, #0274be);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Skip to content link */
.skip-link:focus {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 10000;
    padding: 10px 20px;
    background: var(--hvac-primary-500, #0274be);
    color: white;
    text-decoration: none;
    border-radius: 4px;
}

/* ===== LOADING STATE ===== */

.hvac-trainer-menu.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* ===== ANIMATION KEYFRAMES ===== */

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ===== OVERRIDE THEME CONFLICTS ===== */

/* Ensure our styles take precedence over Astra theme */
.hvac-page-wrapper .hvac-trainer-menu a,
.hvac-plugin-page .hvac-trainer-menu a {
    box-shadow: none !important;
    text-shadow: none !important;
}

/* Remove any unwanted theme button styles */
.hvac-trainer-menu button.ast-menu-toggle {
    display: none !important;
}

/* Ensure dropdowns work without JavaScript */
.hvac-trainer-menu .menu-item-has-children:hover > .sub-menu,
.hvac-trainer-menu .menu-item-has-children:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}