/**
 * mod_jf_stickytoc - Estilos base
 *
 * Define las variables CSS con valores por defecto que el Dispatcher
 * sobreescribirá con los valores configurados por el usuario en el backend.
 * Esto garantiza que el módulo funcione visualmente incluso si el Dispatcher
 * no inyecta estilos dinámicos (p. ej. en modo de mantenimiento).
 *
 * @author  Paco Guio <info@joomfree.com>
 * @link    https://joomfree.com
 */

/* --- Variables CSS por defecto ------------------------------------------ */
.mod-jf-stickytoc {
    --jftoc-color-text:    #555555;
    --jftoc-color-active:  #0078d4;
    --jftoc-color-border:  #dee2e6;
    --jftoc-color-bg:      #ffffff;
    --jftoc-font-size:     0.875rem;
    --jftoc-font-weight:   400;
    --jftoc-font-family:   inherit;

    /* Layout */
    --jftoc-padding:       1rem;
    --jftoc-border-radius: 4px;
    --jftoc-border-width:  1px;

    /* Transiciones suaves */
    --jftoc-transition:    color 0.2s ease, border-color 0.2s ease;
}

/* --- Contenedor principal ----------------------------------------------- */
.mod-jf-stickytoc {
    background-color: var(--jftoc-color-bg);
    border: var(--jftoc-border-width) solid var(--jftoc-color-border);
    border-radius: var(--jftoc-border-radius);
    padding: var(--jftoc-padding);
    font-size: var(--jftoc-font-size);
    font-weight: var(--jftoc-font-weight);
    font-family: var(--jftoc-font-family);
    color: var(--jftoc-color-text);
}

/* --- Cabecera / Título --------------------------------------------------- */
.mod-jf-stickytoc .jftoc-header {
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--jftoc-color-border);
}

.mod-jf-stickytoc .jftoc-title {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--jftoc-color-text);
    opacity: 0.7;
}

/* --- Lista de ítems ------------------------------------------------------- */
.mod-jf-stickytoc .jftoc-nav {
    /* Sin margen adicional */
}

.mod-jf-stickytoc .jftoc-list,
.mod-jf-stickytoc .jftoc-list ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* --- Ítem individual (li) ------------------------------------------------ */
.mod-jf-stickytoc .jftoc-item {
    position: relative;
    margin: 0;
    padding: 0;
}

/* --- Enlace (a) ---------------------------------------------------------- */
.mod-jf-stickytoc .jftoc-link {
    display: block;
    padding: 0.3rem 0.5rem 0.3rem 0.75rem;
    color: var(--jftoc-color-text);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: var(--jftoc-transition);
    line-height: 1.4;
    word-break: break-word;
}

.mod-jf-stickytoc .jftoc-link:hover {
    color: var(--jftoc-color-active);
    border-left-color: var(--jftoc-color-border);
    text-decoration: none;
}

/* --- Estado activo (aplicado por el JS via IntersectionObserver) --------- */
.mod-jf-stickytoc .jftoc-item.is-active > .jftoc-link {
    color: var(--jftoc-color-active);
    border-left-color: var(--jftoc-color-active);
    font-weight: 600;
}

/* --- Subitems (h3) -------------------------------------------------------- */
.mod-jf-stickytoc .jftoc-sublist {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mod-jf-stickytoc .jftoc-sublist .jftoc-link {
    padding-left: 1.5rem;  /* Indentación visual para los h3 */
    font-size: 0.9em;
    opacity: 0.85;
}

.mod-jf-stickytoc .jftoc-sublist .jftoc-item.is-active > .jftoc-link {
    opacity: 1;
    color: var(--jftoc-color-active);
    border-left-color: var(--jftoc-color-active);
}

/* --- Mensaje de "sin headings" ------------------------------------------ */
.mod-jf-stickytoc .jftoc-empty {
    font-style: italic;
    opacity: 0.6;
    padding: 0.25rem 0.5rem;
    font-size: 0.85em;
}

/* --- Modo sticky (si el módulo se coloca en una sidebar sticky) ---------- */
.mod-jf-stickytoc.is-sticky {
    position: sticky;
    top: 1.5rem;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--jftoc-color-border) transparent;
}