/* ==========================================================================
   TABLE OF CONTENTS (Índice de contenidos)
   ========================================================================== */

.toc {
    background: var(--card-bg, #fff);
    border: 1px solid var(--border, #ddd);
    border-left: 4px solid var(--brand, #8b4513);
    border-radius: 6px;
    margin-bottom: 2rem;
    overflow: hidden;
}

/* Header con título y botón toggle */
.toc__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(139, 69, 19, 0.05);
    border-bottom: 1px solid var(--border, #eee);
}

.toc__title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--fg, #333);
}

.toc__toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.75rem;
    background: transparent;
    border: 1px solid var(--border, #ddd);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--muted, #666);
    cursor: pointer;
    transition: all 0.2s ease;
}

.toc__toggle:hover {
    background: var(--brand, #8b4513);
    color: #fff;
    border-color: var(--brand, #8b4513);
}

.toc__toggle-icon {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

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

.toc__toggle[aria-expanded='false'] .toc__toggle-text::before {
    content: 'Mostrar';
}

.toc__toggle[aria-expanded='true'] .toc__toggle-text::before {
    content: 'Ocultar';
}

.toc__toggle-text {
    font-size: 0;
}

/* Lista principal */
.toc__list {
    list-style: none;
    margin: 0;
    padding: 1rem 1.25rem;
    counter-reset: toc-counter;
    transition:
        max-height 0.3s ease,
        opacity 0.3s ease,
        padding 0.3s ease;
    max-height: 1000px;
    opacity: 1;
}

.toc__list.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0 1.25rem;
    overflow: hidden;
}

/* Sublistas */
.toc__sublist {
    list-style: none;
    margin: 0.25rem 0 0 0;
    padding: 0 0 0 1.25rem;
}

/* Items */
.toc__item {
    margin-bottom: 0.4rem;
}

.toc__item:last-child {
    margin-bottom: 0;
}

/* Enlaces */
.toc__link {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.35rem 0.5rem;
    text-decoration: none;
    color: var(--fg, #333);
    border-radius: 4px;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    line-height: 1.4;
}

.toc__link:hover {
    background: rgba(139, 69, 19, 0.08);
    color: var(--brand, #8b4513);
}

/* Numeración */
.toc__number {
    flex-shrink: 0;
    font-weight: 600;
    color: var(--brand, #8b4513);
    font-size: 0.85em;
    min-width: 1.5rem;
}

.toc__text {
    flex: 1;
}

/* Niveles de indentación */
.toc__item--level-3 .toc__link {
    font-size: 0.85rem;
}

.toc__item--level-4 .toc__link {
    font-size: 0.8rem;
    color: var(--muted, #666);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
    .toc {
        margin-bottom: 1.5rem;
    }

    .toc__header {
        padding: 0.75rem 1rem;
    }

    .toc__title {
        font-size: 0.9rem;
    }

    .toc__list {
        padding: 0.75rem 1rem;
    }

    .toc__link {
        font-size: 0.85rem;
        padding: 0.3rem 0.4rem;
    }
}

/* =============================================
   DARK MODE
   ============================================= */
html.theme-dark .toc {
    background: var(--card-bg, #2a2a2a);
    border-color: var(--border, #444);
}

html.theme-dark .toc__header {
    background: rgba(139, 69, 19, 0.1);
    border-bottom-color: var(--border, #444);
}

html.theme-dark .toc__link:hover {
    background: rgba(139, 69, 19, 0.15);
}