/* ============================================
   Section Navigation — Sticky bar under navbar
   ============================================ */

.section-nav {
    position: sticky;
    top: var(--navbar-height, 64px);
    z-index: 900;
    background: var(--bg-primary, #fff);
    border-bottom: 1px solid var(--color-border, #e2e8f0);
    overflow: hidden;
    transition: box-shadow var(--transition-fast, 0.15s);
}

.section-nav.has-shadow {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.section-nav-inner {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    max-width: var(--width-max, 1200px);
    margin: 0 auto;
    padding: 0 var(--space-4, 1rem);
}

.section-nav-inner::-webkit-scrollbar {
    display: none;
}

a.section-nav-link,
button.section-nav-link {
    flex-shrink: 0;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary, #64748b);
    text-decoration: none;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    background: none;
    font-family: inherit;
    transition: all var(--transition-fast, 0.15s);
    white-space: nowrap;
    cursor: pointer;
}

.section-nav-link:hover {
    color: var(--color-primary, #4f46e5);
}

.section-nav-link.active {
    color: var(--color-primary, #4f46e5);
    border-bottom-color: var(--color-primary, #4f46e5);
    font-weight: 600;
}

/* Mobile */
@media (max-width: 640px) {
    .section-nav-link {
        padding: 8px 12px;
        font-size: 12px;
    }
}