/* Responsive Menu Styles - Modern Design */
#scrollheader {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

#scrollheader.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(33, 114, 179, 0.95);
}

.main-nav {
    position: relative;
    background-color: var(--primary-color);
    padding: 0;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.nav-wrapper {
    max-width: var(--wrapper-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--wrapper-padding);
    gap: var(--spacing-lg);
}

.site-logo {
    z-index: var(--z-fixed);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.site-logo:hover {
    transform: scale(1.02);
}

.site-logo img {
    max-height: 50px;
    width: auto;
    height: auto;
    transition: opacity var(--transition-fast);
}

.site-logo:hover img {
    opacity: 0.9;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
    position: relative;
    z-index: var(--z-fixed);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.menu-toggle:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    color: #fff;
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-lg);
    display: block;
    font-family: var(--primary-font);
    font-size: var(--font-size-base);
    font-weight: 500;
    letter-spacing: var(--letter-spacing-normal);
    transition: all var(--transition-base);
    white-space: nowrap;
    border-radius: var(--border-radius-sm);
    position: relative;
    line-height: var(--line-height-normal);
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: var(--spacing-xs);
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: calc(100% - var(--spacing-lg));
    height: 2px;
    background-color: rgba(255, 255, 255, 0.8);
    transition: transform var(--transition-base);
    border-radius: 2px;
}

.nav-menu > li:hover > a,
.nav-menu > li.current-menu-item > a {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.12);
}

.nav-menu > li:hover > a::after,
.nav-menu > li.current-menu-item > a::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-menu > li > a:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

.sub-menu {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    left: 0;
    background-color: var(--bg-primary);
    min-width: 260px;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px) scale(0.95);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
    margin-top: 0;
    overflow: hidden;
}

.nav-menu > li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.sub-menu li {
    border-bottom: var(--border-width) solid var(--bg-secondary);
    transition: background-color var(--transition-fast);
}

.sub-menu li:first-child {
    margin-top: var(--spacing-xs);
}

.sub-menu li:last-child {
    border-bottom: none;
    margin-bottom: var(--spacing-xs);
}

.sub-menu li a {
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    display: block;
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 400;
    transition: all var(--transition-fast);
    position: relative;
    padding-left: var(--spacing-xl);
}

.sub-menu li a::before {
    content: '';
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.sub-menu li a:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    padding-left: calc(var(--spacing-xl) + var(--spacing-sm));
}

.sub-menu li a:hover::before {
    opacity: 1;
}

.sub-menu li a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
    border-radius: var(--border-radius-sm);
}

/* Mobile Dark Overlay */
.mobile-dark-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-dark-overlay.active {
    display: block;
    opacity: 1;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-wrapper {
        padding: var(--spacing-md) var(--wrapper-padding);
    }

    .site-logo img {
        max-height: 40px;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(-10px);
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 380px;
        height: 100vh;
        background: var(--primary-color);
        flex-direction: column;
        padding: calc(var(--spacing-2xl) + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg);
        transition: right var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        overflow-x: hidden;
        z-index: var(--z-modal);
        box-shadow: var(--shadow-xl);
        align-items: stretch;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu > li {
        margin: 0;
        width: 100%;
        border-bottom: var(--border-width) solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu > li:last-child {
        border-bottom: none;
    }

    .nav-menu > li > a {
        padding: var(--spacing-lg);
        border-bottom: none;
        border-radius: 0;
        font-size: var(--font-size-lg);
    }

    .nav-menu > li > a::after {
        display: none;
    }

    .nav-menu > li:hover > a,
    .nav-menu > li.current-menu-item > a {
        background-color: rgba(255, 255, 255, 0.15);
    }

    .sub-menu {
        position: static;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.2);
        padding: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        margin-top: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base), padding var(--transition-base);
    }
    
    .sub-menu li {
        border-bottom: var(--border-width) solid rgba(255, 255, 255, 0.1);
    }

    .sub-menu li:first-child {
        margin-top: 0;
        border-top: var(--border-width) solid rgba(255, 255, 255, 0.1);
    }
    
    .sub-menu li:last-child {
        border-bottom: none;
        margin-bottom: 0;
    }
    
    .sub-menu li a {
        color: rgba(255, 255, 255, 0.9);
        padding: var(--spacing-md) calc(var(--spacing-xl) + var(--spacing-md));
        font-size: var(--font-size-base);
    }

    .sub-menu li a::before {
        display: none;
    }
    
    .sub-menu li a:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: #fff;
        padding-left: calc(var(--spacing-xl) + var(--spacing-md));
    }

    .nav-menu > li.menu-item-has-children > a {
        position: relative;
        padding-right: calc(var(--spacing-xl) + var(--spacing-lg));
    }

    .nav-menu > li.menu-item-has-children > a::after {
        content: '+';
        position: absolute;
        right: var(--spacing-lg);
        top: 50%;
        transform: translateY(-50%);
        font-size: var(--font-size-xl);
        font-weight: 300;
        line-height: 1;
        transition: transform var(--transition-base);
        display: block;
    }

    .nav-menu > li.menu-item-has-children.active > a::after {
        content: '−';
        transform: translateY(-50%) rotate(180deg);
    }

    .nav-menu > li.active > .sub-menu {
        display: block;
        max-height: 1000px;
        padding: var(--spacing-sm) 0;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-wrapper {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .nav-menu > li > a {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}