.desktop-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    background: transparent;
    border: none;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--accent-hover);
}

.dropdown-chevron {
    margin-left: 4px;
    opacity: 0.7;
    transition: transform 0.2s ease;
}

.has-mega-menu {
    position: relative;
}

.has-mega-menu:hover .dropdown-chevron {
    transform: rotate(180deg);
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: -20px;
    padding-top: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 100;
}

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

.mega-menu-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 1.2rem;
    display: flex;
    min-width: 300px;
}

[data-theme="light"] .mega-menu-content {
    background: #ffffff;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.mega-menu-col {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.mega-menu-title {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.mega-menu-items {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mega-menu-link {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0.5rem;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.mega-menu-link:hover {
    background-color: var(--surface-2);
}

[data-theme="light"] .mega-menu-link:hover {
    background-color: var(--surface-2);
}

.mega-menu-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    flex-shrink: 0;
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

[data-theme="light"] .mega-menu-icon {
    background: var(--surface-3);
}

.mega-menu-icon svg {
    width: 18px;
    height: 18px;
}

.mega-menu-link:hover .mega-menu-icon {
    color: var(--text-main);
    border-color: var(--border-light);
}

[data-theme="light"] .mega-menu-link:hover .mega-menu-icon {
    background: var(--surface);
}

.mega-menu-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.mega-menu-title-text {
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.mega-menu-desc {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.4;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-dashboard-btn {
    background-color: var(--accent);
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
    display: none; 
    align-items: center;
    justify-content: center;
}

.header-dashboard-btn:hover {
    background-color: var(--accent-hover);
    color: #ffffff;
    transform: translateY(-1px);
}

.header-login-btn {
    background-color: var(--surface-2);
    color: var(--text-main);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid var(--border);
    transition: background-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
    display: none; 
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.header-login-btn:hover {
    background-color: var(--surface-hover);
    transform: translateY(-1px);
}

@media (min-width: 769px) {
    .header-dashboard-btn {
        display: flex;
    }
    .header-login-btn {
        display: flex;
    }
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 0.25rem;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 1000;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-drawer {
    position: fixed;
    top: 0;
    right: 0;
    transform: translateX(100%);
    width: 100%;
    height: 100%;
    background: var(--surface);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1001;
    display: flex;
    flex-direction: column;
}

[data-theme="light"] .mobile-menu-drawer {
    background: #ffffff;
}

.mobile-menu-drawer.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.mobile-menu-title {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-main);
}

.mobile-menu-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
}

.mobile-menu-links {
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-grow: 1;
}

.mobile-menu-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.mobile-accordion {
    border-bottom: 1px solid var(--border);
}

.mobile-accordion-header {
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    list-style: none;
    transition: background-color 0.2s ease;
}

.mobile-accordion-header::-webkit-details-marker {
    display: none;
}

.mobile-accordion-header:hover {
    background-color: var(--surface-2);
}

.accordion-chevron {
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.mobile-accordion[open] .accordion-chevron {
    transform: rotate(180deg);
}

.mobile-accordion-content {
    background: var(--surface-hover);
    padding: 0.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-menu-link {
    color: var(--text-main);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s ease, color 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu-link::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(-45deg);
    opacity: 0.5;
}

.mobile-menu-link:hover {
    background-color: var(--surface-2);
    color: var(--text-main);
}

.mobile-menu-footer {
    padding: 1.5rem;
    background: var(--surface);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.mobile-dashboard-btn {
    display: block;
    width: 100%;
    text-align: center;
    background-color: var(--accent);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: background-color 0.2s ease;
}

.mobile-dashboard-btn:hover {
    background-color: var(--accent-hover);
    color: var(--text-main);
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}