/* ==========================================================================
   TOC (quick navigation) block
   ========================================================================== */
.toc {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    max-width: none;
}

.toc__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--color-heading);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    font-size: var(--fs-h2);
    transition: background var(--transition-fast);
}

.toc__toggle:hover {
    background: var(--color-bg-dark);
}

.toc__arrow {
    width: 12px;
    height: 12px;
    border-right: 2px solid var(--color-heading);
    border-bottom: 2px solid var(--color-heading);
    transform: rotate(45deg);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.toc__toggle[aria-expanded="true"] .toc__arrow {
    transform: rotate(-135deg);
}

.toc__panel {
    padding: 0.25rem 0.5rem 0.75rem;
}

.toc__list {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.toc__link {
    display: block;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    border-left: 2px solid transparent;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.toc__link:hover {
    color: var(--color-gold);
    background: var(--color-bg-dark);
    border-left-color: var(--color-gold);
}

@media (prefers-reduced-motion: reduce) {
    .toc__arrow {
        transition: none;
    }
}