.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
    padding: var(--spacing-md) 0;
    background: rgba(236, 236, 236, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(35, 52, 68, 0.1);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    transition: transform var(--transition-base);
}

.logo-container:hover {
    transform: scale(1.05);
}

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

.brand-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

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

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-link.active {
    color: var(--primary-color);
    background: rgba(35, 52, 68, 0.1);
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: var(--z-fixed);
    transition: transform var(--transition-base);
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(35, 52, 68, 0.5);
    z-index: calc(var(--z-fixed) - 1);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-fixed);
    padding: var(--spacing-2xl) var(--spacing-md);
    transition: right var(--transition-slow);
    overflow-y: auto;
}

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

.mobile-nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    list-style: none;
    margin-top: var(--spacing-xl);
}

.mobile-nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: block;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: rgba(35, 52, 68, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.mobile-nav-cta {
    margin-top: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    text-decoration: none;
    font-weight: 600;
    display: block;
    transition: all var(--transition-base);
}

.mobile-nav-cta:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.nav-desktop {
    display: flex;
}