/* Enhanced Multi-Level Menu Support
 * File: enhanced-menu.css
 * Purpose: Support for fourth-level nested menu structure
 * Based on: Tree structure with Services > Category > Type > Details
 */

/* Third Level Menu Wrapper */
.submenu.menu-wrapper.third {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background: rgba(200, 200, 200, 0.9);
    display: none;
    max-height: 100vh;
    overflow-y: auto;
}

.submenu.menu-wrapper.third .side-menu-container {
    display: table;
    width: 100%;
    height: 100%;
}

.submenu.menu-wrapper.third .menu-wrapper {
    display: table-cell;
    vertical-align: middle;
    text-align: center;
}

/* Third Level Menu Items */
.text-menu.third-level {
    padding: 0;
    margin: 0;
    display: inline-block;
}

.text-menu.third-level li {
    list-style-type: none;
    text-align: left;
    padding: 0.5em;
    position: relative;
}

.text-menu.third-level li a.sub-link.third-tier {
    font-size: 53.33px;
    font-size: 2.7776041667vw;
    color: #1c252c;
    text-decoration: none;
    display: block;
    padding: 0.2em 0;
    transition: color 0.3s ease;
}

.text-menu.third-level li a.sub-link.third-tier:hover {
    color: #0971ce;
}

/* Mobile Responsive for Third Level */
@media (max-width: 768px) {
    .text-menu.third-level li a.sub-link.third-tier {
        font-size: 28px;
        font-size: 6vw;
    }
}

/* Fourth Level Trigger Support */
.text-menu.second-level li .has-children a[data-trigger] {
    position: relative;
}

.text-menu.second-level li .has-children a[data-trigger]:after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid #1c252c;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
}

/* Back Button for Third Level */
.text-menu.third-level .back {
    cursor: pointer;
    padding: 0.5em;
    border-bottom: 1px solid #e5e5e6;
    margin-bottom: 1em;
}

.text-menu.third-level .back .label {
    font-size: 16px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Animation Support */
.submenu.menu-wrapper.third.show {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

.submenu.menu-wrapper.third.hide {
    animation: fadeOut 0.3s ease-in-out;
}

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

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

/* Enhanced Visual Hierarchy */
.text-menu.first-level li a.sub-link.first-tier,
.text-menu.second-level li a.sub-link.second-tier,
.text-menu.third-level li a.sub-link.third-tier {
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.text-menu.first-level li a.sub-link.first-tier:hover,
.text-menu.second-level li a.sub-link.second-tier:hover,
.text-menu.third-level li a.sub-link.third-tier:hover {
    border-bottom-color: #0971ce;
    transform: translateX(10px);
}

/* Line Separators for Clarity */
.submenu.menu-wrapper.third .inner .line {
    height: 1px;
    background: #e5e5e6;
    width: 100px;
    margin: 0 auto 2em;
}

/* Improved Touch Targets for Mobile */
@media (max-width: 768px) {
    .text-menu.third-level li {
        padding: 1em 0.5em;
    }
    
    .text-menu.third-level li a.sub-link.third-tier {
        padding: 0.5em 0;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* Focus States for Accessibility */
.text-menu.third-level li a.sub-link.third-tier:focus {
    outline: 2px solid #0971ce;
    outline-offset: 2px;
}

/* Container Alignment */
.submenu.menu-wrapper.third .inner {
    padding: 2em 1em;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .text-menu.third-level li a.sub-link.third-tier {
        color: #000;
        border: 1px solid #000;
        margin: 2px 0;
    }
    
    .text-menu.third-level li a.sub-link.third-tier:hover {
        background: #000;
        color: #fff;
    }
}