/* ─── Site Navigation ───────────────────────────────────────────────────── */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    display: flex;
    align-items: stretch;
}

.site-nav__inner {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: stretch;
    gap: 0;
}

.site-nav__logo {
    display: flex;
    align-items: center;
    padding: 0 20px 0 0;
    margin-right: 8px;
    font-size: 1em;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
    border-right: 1px solid var(--color-border);
}

.site-nav__logo:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.site-nav__links {
    display: flex;
    align-items: stretch;
    list-style: none;
    gap: 0;
}

.site-nav__links a {
    display: flex;
    align-items: center;
    padding: 0 16px;
    font-size: 0.875em;
    font-weight: 500;
    color: var(--color-muted);
    text-decoration: none;
    border-right: 1px solid var(--color-border);
    transition: color 0.12s, background 0.12s;
}

.site-nav__links a:hover {
    color: var(--color-text);
    background: var(--color-bg);
    text-decoration: none;
}

.site-nav__links a[aria-current="page"] {
    color: var(--color-accent);
    font-weight: 700;
    border-bottom: 2px solid var(--color-accent);
    background: var(--color-accent-subtle);
}

/* ─── Site Footer ───────────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 20px;
    text-align: center;
    font-size: 0.8em;
    color: var(--color-muted);
}

.site-footer a {
    color: var(--color-muted);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* ─── Mobile nav ────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .site-nav__logo {
        padding-right: 14px;
        margin-right: 4px;
    }

    .site-nav__links a {
        padding: 0 12px;
        font-size: 0.8em;
    }
}