/* ============================================================
   TOC — Schnellnavigation
   ============================================================ */
.toc {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    margin-block: var(--space-section);
}
.toc__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.85rem 1rem;
    color: var(--color-white);
    font-weight: var(--fw-bold);
    font-size: var(--fs-h3);
    border-radius: var(--radius-sm);
}
.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;
    margin-top: -4px;
}
.toc__toggle[aria-expanded="false"] .toc__arrow { transform: rotate(-45deg); margin-top: 4px; }

.toc__list {
    display: grid;
    gap: 0.25rem;
    padding: 0.5rem 0.5rem 0.75rem;
    overflow: hidden;
}
.toc__list[hidden] { display: none; }

.toc__link {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.toc__link:hover { background: var(--color-bg-dark); color: var(--color-heading); }
.toc__link::before { content: "→ "; color: var(--color-heading); }