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

.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(15, 118, 110, 0.08);
    transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.scrolled {
    box-shadow: 0 8px 22px rgba(8, 44, 40, 0.14);
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 88px;
}

.site-logo {
    flex-shrink: 0;
}

.site-logo img {
    height: 66px;
    width: auto;
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 26px;
}

.main-menu,
.main-menu > ul {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: clamp(14px, 2vw, 26px);
}

.main-menu li {
    list-style: none;
}

.main-menu a {
    text-decoration: none;
    color: #1f2937;
    font-weight: 700;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.main-menu a:hover,
.main-menu .current-menu-item > a,
.main-menu .current_page_item > a {
    color: var(--primary);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(15, 118, 110, 0.16);
    background: #fff;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: #1f2937;
    margin: 4px auto;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 1024px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 50;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 18px 20px 22px;
        background: #fff;
        border-bottom: 1px solid rgba(15, 118, 110, 0.14);
        box-shadow: 0 20px 28px rgba(12, 44, 41, 0.12);
    }

    .main-navigation.is-open {
        display: flex;
    }

    .main-menu,
    .main-menu > ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .main-navigation .btn-donate {
        width: 100%;
        justify-content: center;
    }
}