/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}
.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: clamp(12px, 4vw, 24px);
    padding-block: 0px;
    flex-wrap: nowrap;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.brand-mark { height: clamp(56px, 12vw, 100px); width: auto; }
.brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
}
.main-nav { flex: 1; }
.nav-list {
    list-style: none;
    display: flex;
    gap: 34px;
    margin: 0;
    padding: 0;
    justify-content: center;
}
.nav-list a {
    font-weight: 500;
    color: var(--color-ink);
    font-size: 0.97rem;
}
.nav-list a:hover { color: var(--color-orange); }
.btn-nav-cta { padding: 11px 22px; font-size: 0.9rem; }

.lang-toggle-form {
    display: inline-flex;
}
.lang-toggle-btn {
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-ink);
    border-radius: 8px;
    padding: 8px 14px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
}
.lang-toggle-btn:hover {
    border-color: var(--color-orange);
    color: var(--color-orange);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 8px;
}
.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
}


/* ---- Responsive ---- */
@media (max-width: 720px) {
    .nav-toggle { display: flex; }
    .main-nav { flex: 0; }
    .nav-list {
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--color-border);
        display: none;
        gap: 16px;
        max-height: calc(100vh - 100%);
        overflow-y: auto;
    }
    .nav-list.is-open { display: flex; }
    .header-row { position: relative; }
    .btn-nav-cta { padding: 9px 16px; font-size: 0.85rem; white-space: nowrap; }
    .lang-toggle-btn { padding: 7px 10px; font-size: 0.8rem; }
}