.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-white);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.1);
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.header__inner {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
    display: flex;
    align-items: center;
    height: var(--header-height);
}

.header__logo {
    flex-shrink: 0;
}

.header__logo img {
    display: block;
    height: 42px;
    width: auto;
}

.header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.header__nav-link {
    font-size: var(--fs-nav);
    font-weight: var(--fw-medium);
    color: var(--color-text-primary);
    line-height: var(--lh-nav);
    letter-spacing: -0.015em;
    transition: color var(--transition-fast);
}

.header__nav-link:hover {
    color: var(--color-dark-turquoise);
}

.header__nav-link--active {
    font-weight: var(--fw-bold);
    color: var(--color-dark-turquoise);
}

.header__cta {
    flex-shrink: 0;
    margin-left: auto;
    font-size: var(--fs-nav);
    padding: 8px 20px;
}

.header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
}

.header__burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header__burger.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__burger.is-open span:nth-child(2) {
    opacity: 0;
}

.header__burger.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}