/* Header Styles */
.site-header {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-md) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    margin-right: var(--spacing-xl);
}

.logo {
    height: 50px;
    width: auto;
}

.main-nav {
    display: flex;
    justify-content: center;
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    text-align: center;
}

.nav-link:hover {
    color: var(--text-heading);
    background: rgba(99, 102, 241, 0.1);
}

.nav-link.active {
    color: var(--color-primary-light);
    background: rgba(99, 102, 241, 0.2);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -5px);
}

@media (max-width: 1200px) {
    .main-nav {
        position: fixed;
        top: 83px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        z-index: var(--z-dropdown);
    }
    
    .main-nav.active {
        max-height: 500px;
    }
    
    .nav-list {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        align-items: center;
        justify-content: center;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-md);
        width: 100%;
        text-align: center;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}