/**
 * VDK Related Terms Shortcode — [vdk_related]
 *
 * Styled to match the cascade hierarchy of [vdk_doelen], using the site's
 * --accent custom property for interactive links.
 *
 * BEM structure:
 *   .vdk-related
 *   .vdk-related__heading
 *   .vdk-related__list
 *   .vdk-related__item
 *   .vdk-related__item-inner
 *   .vdk-related__link / .vdk-related__name
 *   .vdk-related__count
 *   .vdk-related__description
 *   .vdk-related__subdoelen          (nested list, leergebied pages only)
 *   .vdk-related__subdoel
 *   .vdk-related__subdoel-link / .vdk-related__subdoel-label
 *
 * @package VDK_Learning_Objectives
 * @since 2.4.0
 */

/* =========================================================================
   Container
   ========================================================================= */

.vdk-related {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* =========================================================================
   Heading
   ========================================================================= */

.vdk-related__heading {
    margin: 0 0 16px;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    color: #111827;
}

/* =========================================================================
   Outer list (kerndoelen / subdoelen / siblings)
   ========================================================================= */

.vdk-related__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* =========================================================================
   Two / three column layout (kerndoel & subdoel pages)
   ========================================================================= */

.vdk-related--cols-2 .vdk-related__list,
.vdk-related--cols-3 .vdk-related__list {
    display: grid;
    gap: 0;
}

.vdk-related--cols-2 .vdk-related__list { grid-template-columns: repeat(2, 1fr); }
.vdk-related--cols-3 .vdk-related__list { grid-template-columns: repeat(3, 1fr); }

@media ( max-width: 640px ) {
    .vdk-related--cols-2 .vdk-related__list,
    .vdk-related--cols-3 .vdk-related__list {
        grid-template-columns: 1fr;
    }
}

/* =========================================================================
   Item — matches .vdk-doelen__leergebied style
   ========================================================================= */

.vdk-related__item {
    border-left: 3px solid #e5e7eb;
    padding-left: 12px;
    padding-top: 10px;
    padding-bottom: 10px;
    transition: border-color 0.15s ease;
}

.vdk-related__item:hover {
    border-left-color: var(--accent, #6b7280);
}

.vdk-related__item--current {
    border-left-color: var(--accent, #374151);
}

/* =========================================================================
   Item inner row (link + count)
   ========================================================================= */

.vdk-related__item-inner {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
}

/* =========================================================================
   Link / name — matches .vdk-doelen__kerndoel-link style
   ========================================================================= */

.vdk-related__link {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    text-decoration: none;
    line-height: 1.4;
    transition: color 0.15s ease;
}

.vdk-related__link:hover {
    color: var(--accent, #111827);
    text-decoration: underline;
}

.vdk-related__name {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: #111827;
    line-height: 1.4;
}

/* =========================================================================
   Count badge — small inline pill
   ========================================================================= */

.vdk-related__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 20px;
    padding: 0 6px;
    background: #f3f4f6;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: #6b7280;
    flex-shrink: 0;
    line-height: 1;
}

.vdk-related__item:hover .vdk-related__count {
    background: #e5e7eb;
    color: #374151;
}

.vdk-related__item--current .vdk-related__count {
    background: var(--accent, #374151);
    color: #ffffff;
    opacity: 0.85;
}

/* =========================================================================
   Description snippet
   ========================================================================= */

.vdk-related__description {
    margin: 4px 0 0;
    font-size: 13px;
    color: #6b7280;
    line-height: 1.5;
}

/* =========================================================================
   Nested subdoelen list (leergebied pages)
   Matches .vdk-doelen__subdoelen style
   ========================================================================= */

.vdk-related__subdoelen {
    list-style: none;
    margin: 6px 0 0 0;
    padding: 0 0 0 16px;
    border-left: 2px solid #f3f4f6;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.vdk-related__subdoel-link,
.vdk-related__subdoel-label {
    font-size: 13px;
    font-weight: 400;
    color: #6b7280;
    text-decoration: none;
    line-height: 1.4;
    transition: color 0.15s ease;
}

.vdk-related__subdoel-link:hover {
    color: var(--accent, #374151);
    text-decoration: underline;
}

/* =========================================================================
   Type modifiers — accent colours per page type
   ========================================================================= */

.vdk-related--leergebied .vdk-related__item {
    border-left-color: #e5e7eb;
}

.vdk-related--kerndoel .vdk-related__item {
    border-left-color: #f3f4f6;
}

.vdk-related--kerndoel .vdk-related__item:hover {
    border-left-color: #e5e7eb;
}

.vdk-related--subdoel .vdk-related__item--current {
    border-left-color: var(--accent, #374151);
}

.vdk-related--subdoel .vdk-related__item--current .vdk-related__name {
    color: var(--accent, #111827);
}

/* =========================================================================
   Responsive
   ========================================================================= */

@media ( max-width: 640px ) {
    .vdk-related__link,
    .vdk-related__name {
        font-size: 13px;
    }
}