/**
 * FRELIP Category Landing Pages — Hierarchy Styles (v1.7.0)
 *
 * Styles for the three-level hierarchy templates:
 *   - L1 discipline  (taxonomy-feed-discipline.php)
 *   - L2 category    (taxonomy-feed-category-l2.php)
 *   - L3 subcategory (taxonomy-feed-category-l3.php)
 *
 * Uses the BEM-like `.frelip-hier` namespace to avoid collisions with
 * the original `.frelip-clp` styles that remain for the fallback template.
 */

/* ==========================================================================
   0. CSS CUSTOM PROPERTIES
   ========================================================================== */
.frelip-hier {
    --frelip-accent: #003366;
    --frelip-accent-light: color-mix(in srgb, var(--frelip-accent) 15%, #fff);
    --frelip-text: #1a1a2e;
    --frelip-text-muted: #555;
    --frelip-bg: #f8f9fa;
    --frelip-card-bg: #fff;
    --frelip-card-radius: 12px;
    --frelip-card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --frelip-card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.14);
    --frelip-transition: 0.25s ease;
    --frelip-max-width: 1200px;

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--frelip-text);
    line-height: 1.6;
}

/* ==========================================================================
   1. BREADCRUMBS
   ========================================================================== */
.frelip-hier__breadcrumbs {
    max-width: var(--frelip-max-width);
    margin: 0 auto;
    padding: 14px 20px;
    font-size: 0.85rem;
}

.frelip-hier__breadcrumbs ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin: 0;
    padding: 0;
}

.frelip-hier__breadcrumbs li {
    display: inline-flex;
    align-items: center;
}

.frelip-hier__breadcrumbs li + li::before {
    content: '›';
    margin: 0 8px;
    color: #999;
}

.frelip-hier__breadcrumbs a {
    color: var(--frelip-accent);
    text-decoration: none;
}
.frelip-hier__breadcrumbs a:hover {
    text-decoration: underline;
}

.frelip-hier__breadcrumbs span[aria-current] {
    color: var(--frelip-text-muted);
    font-weight: 600;
}

/* ==========================================================================
   2. HERO SECTIONS
   ========================================================================== */
.frelip-hier__hero {
    position: relative;
    min-height: 280px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--frelip-accent);
}

.frelip-hier__hero-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.frelip-hier__hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.3) 100%);
    z-index: 1;
}

.frelip-hier__hero--no-image .frelip-hier__hero-overlay {
    background: linear-gradient(135deg, var(--frelip-accent) 0%, color-mix(in srgb, var(--frelip-accent) 70%, #000) 100%);
}

.frelip-hier__hero-inner {
    position: relative;
    z-index: 2;
    max-width: var(--frelip-max-width);
    margin: 0 auto;
    padding: 48px 24px;
    color: #fff;
    width: 100%;
}

.frelip-hier__hero-inner h1 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0 0 12px;
    line-height: 1.2;
    color: #fff;
}

.frelip-hier__hero-parent {
    font-size: 0.9rem;
    opacity: 0.85;
    margin: 0 0 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.frelip-hier__hero-parent a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px dashed rgba(255,255,255,0.5);
}
.frelip-hier__hero-parent a:hover {
    border-bottom-color: #fff;
}

.frelip-hier__hero-subtitle {
    font-size: 1.05rem;
    margin: 0 0 8px;
    opacity: 0.92;
    max-width: 640px;
}

.frelip-hier__hero-stats {
    display: inline-block;
    background: rgba(255,255,255,0.18);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.88rem;
    margin-top: 8px;
    backdrop-filter: blur(4px);
}

/* L2 hero — shorter, accent bar */
.frelip-hier__hero--l2 {
    min-height: 220px;
}

/* L3 hero — even more compact */
.frelip-hier__hero--l3 {
    min-height: 180px;
}

/* ==========================================================================
   3. GENERIC SECTIONS
   ========================================================================== */
.frelip-hier__section {
    max-width: var(--frelip-max-width);
    margin: 0 auto;
    padding: 32px 24px;
}

.frelip-hier__section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--frelip-accent);
}

.frelip-hier__section-intro {
    color: var(--frelip-text-muted);
    margin: 0 0 20px;
    font-size: 0.95rem;
}

.frelip-hier__content-body {
    max-width: 800px;
    line-height: 1.75;
}

.frelip-hier__content-body p {
    margin: 0 0 16px;
}

/* ==========================================================================
   4. CATEGORY CARD GRID
   ========================================================================== */
.frelip-hier__card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 12px;
}

.frelip-hier__card-grid--compact {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

/* ==========================================================================
   5. CATEGORY CARD (frelip-hier-card)
   ========================================================================== */
.frelip-hier-card {
    display: flex;
    flex-direction: column;
    background: var(--frelip-card-bg);
    border: 1px solid #e5e7eb;
    border-radius: var(--frelip-card-radius);
    padding: 22px 20px 18px;
    text-decoration: none;
    color: var(--frelip-text);
    box-shadow: var(--frelip-card-shadow);
    transition: box-shadow var(--frelip-transition), transform var(--frelip-transition), border-color var(--frelip-transition);
    position: relative;
    overflow: hidden;
}

.frelip-hier-card:hover {
    box-shadow: var(--frelip-card-shadow-hover);
    transform: translateY(-3px);
    border-color: var(--frelip-accent);
    text-decoration: none;
    color: var(--frelip-text);
}

.frelip-hier-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--frelip-accent);
    opacity: 0;
    transition: opacity var(--frelip-transition);
}

.frelip-hier-card:hover::before {
    opacity: 1;
}

.frelip-hier-card__icon {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.frelip-hier-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--frelip-text);
    line-height: 1.3;
}

.frelip-hier-card:hover .frelip-hier-card__title {
    color: var(--frelip-accent);
}

.frelip-hier-card__desc {
    font-size: 0.88rem;
    color: var(--frelip-text-muted);
    margin: 0 0 12px;
    flex: 1;
    line-height: 1.5;
}

.frelip-hier-card__meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.frelip-hier-card__children,
.frelip-hier-card__feeds {
    display: inline-flex;
    align-items: center;
    background: var(--frelip-bg);
    padding: 3px 10px;
    border-radius: 12px;
    color: var(--frelip-text-muted);
    font-weight: 500;
}

.frelip-hier-card__link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--frelip-accent);
    margin-top: auto;
}

.frelip-hier-card:hover .frelip-hier-card__link {
    text-decoration: underline;
}

/* Related cards — slightly more compact */
.frelip-hier-card--related {
    padding: 16px 18px 14px;
}

.frelip-hier-card--related .frelip-hier-card__title {
    font-size: 0.95rem;
}

/* ==========================================================================
   6. RESOURCE CARDS (cross-platform links)
   ========================================================================== */
.frelip-hier__resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 18px;
    margin-top: 12px;
}

.frelip-hier__resource-card {
    background: var(--frelip-card-bg);
    border: 1px solid #e5e7eb;
    border-radius: var(--frelip-card-radius);
    padding: 20px;
    box-shadow: var(--frelip-card-shadow);
}

.frelip-hier__resource-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--frelip-text);
}

.frelip-hier__resource-card p {
    font-size: 0.88rem;
    color: var(--frelip-text-muted);
    margin: 0 0 10px;
}

.frelip-hier__resource-card a {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--frelip-accent);
    text-decoration: none;
}
.frelip-hier__resource-card a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   7. FEED POSTS LIST & GRID (L3 template)
   ========================================================================== */
.frelip-hier__feed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 18px;
    margin-top: 12px;
}

.frelip-hier__feed-card {
    background: var(--frelip-card-bg);
    border: 1px solid #e5e7eb;
    border-radius: var(--frelip-card-radius);
    padding: 20px;
    box-shadow: var(--frelip-card-shadow);
    transition: box-shadow var(--frelip-transition);
    display: flex;
    flex-direction: column;
}

.frelip-hier__feed-card:hover {
    box-shadow: var(--frelip-card-shadow-hover);
}

.frelip-hier__feed-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.frelip-hier__feed-badge {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--frelip-text-muted);
    background: var(--frelip-bg);
    padding: 2px 10px;
    border-radius: 10px;
}

.frelip-hier__rss-indicator {
    font-size: 0.78rem;
    color: #e08700;
    font-weight: 500;
}

.frelip-hier__feed-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.35;
}

.frelip-hier__feed-card h3 a {
    color: var(--frelip-text);
    text-decoration: none;
}
.frelip-hier__feed-card h3 a:hover {
    color: var(--frelip-accent);
}

.frelip-hier__feed-excerpt {
    font-size: 0.88rem;
    color: var(--frelip-text-muted);
    line-height: 1.55;
    margin-bottom: 12px;
    flex: 1;
}

.frelip-hier__feed-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--frelip-accent);
    text-decoration: none;
    margin-top: auto;
}
.frelip-hier__feed-link:hover {
    text-decoration: underline;
}

/* Featured feeds list on L2 template */
.frelip-hier__feed-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

.frelip-hier__feed-item {
    background: var(--frelip-card-bg);
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 16px;
    box-shadow: var(--frelip-card-shadow);
}

.frelip-hier__feed-item h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 4px 0 6px;
}

.frelip-hier__feed-item h3 a {
    color: var(--frelip-text);
    text-decoration: none;
}
.frelip-hier__feed-item h3 a:hover {
    color: var(--frelip-accent);
}

.frelip-hier__feed-item p {
    font-size: 0.85rem;
    color: var(--frelip-text-muted);
    margin: 0;
}

/* ==========================================================================
   8. PAGINATION
   ========================================================================== */
.frelip-hier__pagination {
    text-align: center;
    margin-top: 28px;
    padding: 12px 0;
}

.frelip-hier__pagination .page-numbers {
    display: inline-block;
    padding: 8px 14px;
    margin: 0 3px;
    border-radius: 6px;
    background: var(--frelip-card-bg);
    border: 1px solid #e5e7eb;
    color: var(--frelip-text);
    text-decoration: none;
    font-size: 0.88rem;
    transition: all var(--frelip-transition);
}

.frelip-hier__pagination .page-numbers:hover {
    border-color: var(--frelip-accent);
    color: var(--frelip-accent);
}

.frelip-hier__pagination .page-numbers.current {
    background: var(--frelip-accent);
    color: #fff;
    border-color: var(--frelip-accent);
}

/* ==========================================================================
   9. EMPTY STATE
   ========================================================================== */
.frelip-hier__empty {
    text-align: center;
    padding: 48px 20px;
    color: var(--frelip-text-muted);
    font-size: 1rem;
    background: var(--frelip-bg);
    border-radius: var(--frelip-card-radius);
}

/* ==========================================================================
   10. EXTERNAL RESOURCES LIST
   ========================================================================== */
.frelip-hier__ext-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
}

.frelip-hier__ext-list li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.frelip-hier__ext-list a {
    color: var(--frelip-accent);
    text-decoration: none;
    font-weight: 500;
}
.frelip-hier__ext-list a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   11. BACK LINKS
   ========================================================================== */
.frelip-hier__back {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding-top: 16px !important;
    padding-bottom: 40px !important;
    border-top: 1px solid #eee;
}

.frelip-hier__back a {
    color: var(--frelip-accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.92rem;
}
.frelip-hier__back a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   12. RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
    .frelip-hier__hero-inner h1 {
        font-size: 1.5rem;
    }

    .frelip-hier__hero-subtitle {
        font-size: 0.95rem;
    }

    .frelip-hier__card-grid {
        grid-template-columns: 1fr;
    }

    .frelip-hier__card-grid--compact {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    .frelip-hier__feed-grid {
        grid-template-columns: 1fr;
    }

    .frelip-hier__feed-list {
        grid-template-columns: 1fr;
    }

    .frelip-hier__resource-grid {
        grid-template-columns: 1fr;
    }

    .frelip-hier__section {
        padding: 24px 16px;
    }

    .frelip-hier__hero-inner {
        padding: 32px 16px;
    }

    .frelip-hier__back {
        flex-direction: column;
        gap: 10px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .frelip-hier__card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .frelip-hier__feed-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .frelip-hier__card-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .frelip-hier__feed-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 4-column option for large screens with many L2 cards */
@media (min-width: 1280px) {
    .frelip-hier__card-grid:not(.frelip-hier__card-grid--compact) {
        grid-template-columns: repeat(4, 1fr);
    }
}