/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--header);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary);
    color: var(--primary-ink);
    font-weight: 800;
}

.sr-only {
    font-family: "Signika Negative", Arial;
    font-size: 24px;
    font-weight: 500;
    color: var(--primary);
}

.nav ul {
    display: flex;
    gap: 18px;
    list-style: none;
    align-items: center;
}

.nav a,.nav-mobile a {
    color: var(--text);
    text-decoration: none;
    padding: 8px 10px;
    border-radius: 8px;
}

.nav a:hover {
    background: #e5e5e5;
}


.nav-cta a {
    margin-left: 6px;
}

/* Mobile nav */
.menu-toggle {
    display: none;
}

.hamburger {
    display: none;
    cursor: pointer;
    width: 36px;
    height: 28px;
    position: relative;
}

.hamburger span {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--text);
    transition: .2s;
}

.hamburger span:nth-child(1) {
    top: 2px;
}

.hamburger span:nth-child(2) {
    top: 13px;
}

.hamburger span:nth-child(3) {
    bottom: 2px;
}

.nav-mobile {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    padding: 16px 24px 24px;
    background: var(--header);
    border-bottom: 1px solid var(--border);
}

.nav-mobile ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

#menu-toggle:checked~.nav-mobile {
    display: block;
}

#menu-toggle:checked+.hamburger span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}

#menu-toggle:checked+.hamburger span:nth-child(2) {
    opacity: 0;
}

#menu-toggle:checked+.hamburger span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}

/* Responsive header */
@media (max-width: 920px) {
    .nav {
        display: none;
    }

    .hamburger {
        display: inline-block;
    }

    .header-inner {
        grid-template-columns: auto 1fr auto;
    }
}