/* Multi-level Navigation Menu Styles */
.main-nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
}

.nav-item {
    position: relative;
    margin: 0 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 15px 10px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: #007bff;
    border-bottom: 2px solid #007bff;
}

.nav-link.active {
    color: #007bff;
    border-bottom: 2px solid #007bff;
}

.dropdown-arrow {
    margin-left: 5px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

/* Dropdown Menu Styles */
.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-radius: 6px;
    min-width: 220px;
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.2s ease;
    z-index: 1000;
}

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

.dropdown-content {
    display: block;
}

/* When there are many items, arrange them horizontally */
.level-2 .dropdown-content {
    max-width: 600px;
}

.dropdown-item {
    position: relative;
}

.dropdown-link {
    display: block;
    position: relative;
    padding: 12px 24px 12px 12px !important;
    text-decoration: none;
    color: #555;
    transition: all 0.2s ease;
    font-weight: 400;
    border-bottom: none;
}

.dropdown-link:hover {
    color: #007bff;
    padding-left: 16px !important;
}

.dropdown-link i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

/* Third level submenu (vertical) */
.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    left: 100%;
    top: 0;
    margin-left: 8px;
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-radius: 6px;
    min-width: 200px;
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(8px);
    transition: all 0.2s ease;
    z-index: 1001;
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu-link {
    display: block;
    padding: 10px 20px 10px 12px !important;
    text-decoration: none;
    color: #555;
    transition: all 0.2s ease;
    font-weight: 400;
    border-bottom: none;
}

.submenu-link:hover {
    color: #007bff;
    padding-left: 16px !important;
}

.submenu-link i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

/* Submenu arrow indicator */
.submenu-arrow {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    opacity: 0.6;
    transition: all 0.2s ease;
}

.dropdown-link:hover .submenu-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(2px);
}

/* Responsive design for smaller screens */
@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
        background: white;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .main-nav.active {
        display: flex;
    }

    .nav-item {
        margin: 0;
        border-bottom: 1px solid #e9ecef;
    }

    .nav-link {
        padding: 15px 20px;
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0;
        background: #f8f9fa;
    }

    .dropdown-content {
        flex-direction: column;
        gap: 0;
    }

    .dropdown-item {
        min-width: auto;
    }

    .dropdown-link {
        padding: 12px 30px;
        margin: 0;
        border-radius: 0;
    }

    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: #e9ecef;
    }

    .submenu-link {
        padding: 10px 40px;
    }
}

/* Mobile menu toggle button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 10px;
    color: #333;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* Clean hover effects */
.nav-link,
.dropdown-link,
.submenu-link {
    position: relative;
}