.site-nav {
    position: sticky;
    top: 0;
    z-index: 200;
    background: var(--color-primary);
    color: white;
    transition: box-shadow .2s;
}

.site-nav.is-scrolled {
    box-shadow: 0 2px 12px rgba(0,0,0,.15);
}

.site-nav__inner {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 64px;
    transition: height .2s;
}

.site-nav.is-scrolled .site-nav__inner { height: 56px; }

.site-nav__logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: white;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -.01em;
}

.site-nav__logo:hover { opacity: .9; }

.site-nav__logo-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    display: block;
}

.site-nav__logo-text {
    font-size: var(--text-lg);
    line-height: 1;
}

.site-nav__menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

.site-nav__item--dropdown { position: relative; }

.site-nav__link {
    color: white;
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: 500;
    padding: .5rem 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: .25rem;
    line-height: 1;
}

.site-nav__link:hover,
.site-nav__link.is-active { opacity: .85; }

.site-nav__chev {
    font-size: .75em;
    transition: transform .2s;
}

.site-nav__trigger[aria-expanded="true"] .site-nav__chev {
    transform: rotate(180deg);
}

.site-nav__dropdown {
    position: absolute;
    top: calc(100% + .5rem);
    left: 0;
    min-width: 240px;
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    padding: .5rem;
    display: flex;
    flex-direction: column;
    z-index: 201;
}

.site-nav__dropdown[hidden] { display: none; }

.site-nav__dropdown-link {
    color: var(--color-text);
    text-decoration: none;
    padding: .5rem .75rem;
    border-radius: calc(var(--radius) - 2px);
    font-size: var(--text-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.site-nav__dropdown-link:hover {
    background: var(--color-surface);
    color: var(--color-primary);
}

.site-nav__count {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-weight: 500;
}

.site-nav__dropdown-all {
    color: var(--color-primary);
    text-decoration: none;
    padding: .65rem .75rem;
    margin-top: .25rem;
    border-top: 1px solid var(--color-border);
    font-size: var(--text-sm);
    font-weight: 600;
}

.site-nav__dropdown-all:hover { background: var(--color-surface); }

.site-nav__toggle {
    display: none;
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: .5rem;
    margin-left: auto;
    flex-direction: column;
    gap: 4px;
}

.site-nav__toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: white;
    transition: transform .2s, opacity .2s;
}

.site-nav__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.site-nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-nav__toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 768px) {
    .site-nav__toggle { display: flex; }

    .site-nav__menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        gap: 0;
        box-shadow: 0 8px 24px rgba(0,0,0,.12);
        max-height: calc(100vh - 64px);
        overflow-y: auto;
        transform: translateY(-100%);
        transition: transform .3s;
        margin: 0;
        visibility: hidden;
    }

    .site-nav__menu.is-open {
        transform: translateY(0);
        visibility: visible;
    }

    .site-nav__link {
        color: var(--color-text);
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-border);
        width: 100%;
        justify-content: space-between;
    }

    .site-nav__dropdown {
        position: static;
        box-shadow: none;
        background: var(--color-surface);
        margin: 0 -1rem;
        padding: .5rem 1rem;
        border-radius: 0;
        z-index: auto;
    }
}