/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: 100;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
    position: fixed;
    background-color: var(--color-blue-dark);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.site-header__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 87px;
    gap: 45px;
}

.site-header__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-header__logo img {
    width: 236px;
    height: 71px;
    object-fit: contain;
}

.site-header__site-name {
    font-family: var(--font-primary);
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-white);
}

.site-header__nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.site-header__menu {
    display: flex;
    align-items: center;
    gap: 45px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-header__menu li a {
    font-family: var(--font-primary);
    font-size: var(--fs-md);
    font-weight: var(--fw-regular);
    color: var(--color-white);
    text-decoration: none;
    white-space: nowrap;
    transition: opacity 0.2s ease;
}

.site-header__menu li a:hover {
    opacity: 0.8;
}

.site-header__cta {
    flex-shrink: 0;
    font-size: var(--fs-base);
    padding: 10px 15px;
    white-space: nowrap;
}

.site-header__cta-mobile {
    display: none;
}

/* Light variant — for pages with light backgrounds */
.site-header--light {
    background-color: var(--color-white);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.site-header--light .site-header__logo img {
    filter: brightness(0) saturate(100%) invert(7%) sepia(97%) saturate(6529%) hue-rotate(232deg) brightness(87%) contrast(119%);
}

.site-header--light .site-header__menu li a {
    color: var(--color-blue);
}

.site-header--light .site-header__menu li a:hover {
    opacity: 0.7;
}

.site-header--light .site-header__site-name {
    color: var(--color-blue);
}

.site-header--light .site-header__hamburger span {
    background-color: var(--color-blue);
}

.site-header--light.scrolled {
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.site-header--light.scrolled .site-header__menu li a {
    color: var(--color-blue);
}

.site-header--light.scrolled .site-header__logo img {
    filter: brightness(0) saturate(100%) invert(7%) sepia(97%) saturate(6529%) hue-rotate(232deg) brightness(87%) contrast(119%);
}

.site-header--light.scrolled .site-header__hamburger span {
    background-color: var(--color-blue);
}

/* Hamburger — hidden on desktop */
.site-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.site-header__hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

@media (max-width: 1279px) {
    .site-header__inner {
        padding: 0 40px;
        gap: 25px;
    }

    .site-header__menu {
        gap: 25px;
    }

    .site-header__menu li a {
        font-size: var(--fs-base);
    }
}

/* Body scroll lock when menu is open */
body.nav-open {
    overflow: hidden;
}

/* Mobile — below 1024px */
@media (max-width: 1023px) {
    .site-header__inner {
        padding: 0 15px;
        justify-content: space-between;
        gap: 0;
    }

    .site-header__logo img {
        width: 180px;
        height: auto;
    }

    .site-header__hamburger {
        display: flex;
        z-index: 101;
    }

    .site-header__nav {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background-color: var(--color-blue-dark);
        padding: 0 var(--space-xl);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        z-index: 100;
    }

    .site-header__nav.is-open {
        opacity: 1;
        pointer-events: auto;
    }

    .site-header__menu {
        flex-direction: column;
        gap: 35px;
        align-items: center;
    }

    .site-header__menu li a {
        font-size: var(--fs-2xl);
        font-weight: var(--fw-medium);
    }

    .site-header__cta {
        display: none;
    }

    .site-header__cta-mobile {
        display: block;
        margin-top: 40px;
        text-align: center;
        font-size: var(--fs-lg);
        padding: 15px 30px;
    }
}