/* ==========================================================================
   Table of contents (quick navigation)
   ========================================================================== */

.toc {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    margin-bottom: var(--space-section);
}

.toc__toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.1rem;
    color: var(--color-gold);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    border-radius: var(--radius-md);
}

.toc__arrow {
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 7px solid currentColor;
    transition: transform var(--transition-fast);
    flex: 0 0 auto;
}

.toc__toggle[aria-expanded="false"] .toc__arrow {
    transform: rotate(-90deg);
}

.toc__list {
    display: grid;
    gap: 0.15rem;
    padding: 0.25rem 0.5rem 0.5rem;
    overflow: hidden;
    transition: max-height var(--transition-base), opacity var(--transition-base);
}

.toc__list[hidden] {
    display: none;
}

.toc__list li {
    width: 100%;
}

.toc__link {
    display: block;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-size: 0.95rem;
    border-left: 3px solid transparent;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

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

.toc__link--active {
    color: var(--color-gold);
    border-left-color: var(--color-gold);
}