/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    transition: all var(--transition);
}

.header.scrolled {
    background: rgba(26, 69, 122, 0.95);
    backdrop-filter: blur(20px);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

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

.logo {
    color: var(--color-white);
    font-family: var(--font-secondary);
    font-weight: 800;
    font-size: var(--font-size-lg);
    letter-spacing: 2px;
    margin: 0;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    margin: 0;
}

.nav-link {
    color: var(--color-white);
    font-family: var(--font-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: all var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: all var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.search-btn,
.user-btn {
    background: none;
    border: none;
    color: var(--color-white);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.search-btn:hover,
.user-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 3px;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.mobile-menu-btn span {
    width: 22px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition);
    border-radius: 1px;
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Prevent scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* Responsive Design - Header */
@media (max-width: 992px) {
    .navbar-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0;
    }
    
    .navbar {
        padding: var(--spacing-xs) 0;
    }
    
    .logo {
        font-size: var(--font-size-md);
        letter-spacing: 1px;
    }
}

@media (max-width: 576px) {
    .logo {
        font-size: var(--font-size-base);
    }
    
    .navbar-actions {
        gap: var(--spacing-xs);
    }
    
    .search-btn,
    .user-btn {
        padding: var(--spacing-xs);
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}