.site-header {
    background-color: var(--white-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.site-logo img {
    max-height: 60px;
    width: auto;
    height: auto;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: 1002;
}

.mobile-menu-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    position: relative;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--primary-color-100);
    transition: all 0.3s ease;
    border-radius: 2px;
    display: block;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.site-navigation {
    transition: all 0.3s ease;
}

.site-header nav ul,
.site-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.site-header nav ul li {
    margin: 0;
    padding: 0;
}

.site-header nav a {
    color: var(--primary-color-100);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease, border-color 0.3s ease;
    white-space: nowrap;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.site-header nav a:hover,
.site-header nav a:focus {
    color: var(--secondary-color-100);
    border-bottom: 2px solid var(--secondary-color-100);
}

/* Mobile Navigation - Full Width Below Header, Slide In from Left */
.mobile-navigation {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white-color);
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    height: calc(100vh - 80px);
}

.mobile-navigation.mobile-menu-open {
    transform: translateX(0);
}

.mobile-navigation-content {
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
}

.mobile-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-menu li {
    width: 100%;
    margin: 0;
    padding: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-navigation.mobile-menu-open .mobile-menu li {
    opacity: 1;
    transform: translateX(0);
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(2) {
    transition-delay: 0.15s;
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(3) {
    transition-delay: 0.2s;
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(4) {
    transition-delay: 0.25s;
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(5) {
    transition-delay: 0.3s;
}

.mobile-navigation.mobile-menu-open .mobile-menu li:nth-child(6) {
    transition-delay: 0.35s;
}

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

.mobile-menu a {
    color: var(--primary-color-100);
    text-decoration: none;
    font-weight: 500;
    width: 100%;
    padding: 1.25rem 0;
    font-size: 1.125rem;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.mobile-menu a:hover,
.mobile-menu a:focus {
    color: var(--secondary-color-100);
    padding-left: 1rem;
}

/* Backdrop overlay when menu is open - positioned below header */
.mobile-menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
}

.mobile-menu-backdrop.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Desktop Styles */
@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .mobile-navigation {
        display: none !important;
    }
    
    .mobile-menu-backdrop {
        display: none !important;
    }
    
    .site-navigation {
        display: flex !important;
        position: relative;
    }
}