/* ============================================================
   Wissen-Bereich — Layout-Refresh 2026-05-12
   Eingebunden ueber base.php nur fuer $currentPage === 'wissen'.
   ============================================================ */

/* Brand-Variablen (passend zu og-image.php) */
:root {
    --wissen-indigo: #4F46E5;
    --wissen-indigo-dark: #3730A3;
    --wissen-indigo-light: #eef2ff;
    --wissen-slate-900: #0f172a;
    --wissen-slate-600: #475569;
    --wissen-slate-500: #64748B;
    --wissen-slate-200: #e2e8f0;
    --wissen-slate-50: #f8fafc;
}

/* ----------------------------------------------------------------
   Uebersichts-Hero (wissen-liste.php)
   ---------------------------------------------------------------- */
.wissen-hero {
    background: linear-gradient(135deg, var(--wissen-indigo) 0%, var(--wissen-indigo-dark) 100%);
    color: #fff;
    padding: 3.5rem 0 3rem;
    margin-bottom: 2.5rem;
    border-radius: 0 0 1.5rem 1.5rem;
    position: relative;
    overflow: hidden;
}
.wissen-hero::after {
    content: "";
    position: absolute;
    right: -60px;
    top: -60px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    pointer-events: none;
}
.wissen-hero::before {
    content: "";
    position: absolute;
    right: 120px;
    bottom: -100px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
    pointer-events: none;
}
.wissen-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.015em;
}
.wissen-hero p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.85);
    max-width: 620px;
    margin: 0;
}
.wissen-hero .hero-meta {
    margin-top: 1.25rem;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.7);
}

/* ----------------------------------------------------------------
   Filter-Pills
   ---------------------------------------------------------------- */
.wissen-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}
.wissen-filter .pill {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    background: #fff;
    border: 1.5px solid var(--wissen-slate-200);
    color: var(--wissen-slate-600);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.18s ease;
}
.wissen-filter .pill:hover {
    border-color: var(--wissen-indigo);
    color: var(--wissen-indigo);
    transform: translateY(-1px);
}
.wissen-filter .pill.active {
    background: var(--wissen-indigo);
    border-color: var(--wissen-indigo);
    color: #fff;
}
.wissen-filter .pill .count {
    margin-left: 0.5rem;
    font-weight: 600;
    opacity: 0.7;
    font-size: 0.8rem;
}
.wissen-filter .pill.active .count {
    opacity: 0.9;
}

/* ----------------------------------------------------------------
   Article Cards (Listing + Verwandte Artikel)
   ---------------------------------------------------------------- */
.wissen-card {
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.wissen-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(15,23,42,0.08), 0 12px 24px rgba(15,23,42,0.08);
}
.wissen-card .card-img {
    width: 100%;
    aspect-ratio: 1200 / 630;
    object-fit: cover;
    display: block;
    background: var(--wissen-slate-50);
}
.wissen-card .card-content {
    padding: 1.25rem 1.4rem 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.wissen-card h2,
.wissen-card h3 {
    color: var(--wissen-slate-900);
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 0.6rem;
}
.wissen-card .card-desc {
    color: var(--wissen-slate-600);
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 1rem;
    flex: 1;
}
.wissen-card .card-meta {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}
.wissen-card .card-cat {
    display: inline-block;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    background: var(--wissen-indigo-light);
    color: var(--wissen-indigo);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.wissen-card .card-footer {
    border-top: 1px solid var(--wissen-slate-200);
    padding: 0.75rem 1.4rem;
    background: var(--wissen-slate-50);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--wissen-slate-500);
}
.wissen-card .card-footer .read-more {
    color: var(--wissen-indigo);
    font-weight: 600;
}

/* ----------------------------------------------------------------
   Article-Detail (wissen-artikel.php)
   ---------------------------------------------------------------- */
.wissen-article {
    color: var(--wissen-slate-900);
    line-height: 1.7;
    font-size: 1.0625rem;
}
.wissen-article h1 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.015em;
    margin-bottom: 1rem;
}
.wissen-article .article-byline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    color: var(--wissen-slate-500);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.wissen-article .article-byline .sep {
    color: var(--wissen-slate-200);
}
.wissen-article .article-categories {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}
.wissen-article .article-categories a {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    background: var(--wissen-indigo-light);
    color: var(--wissen-indigo);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.18s ease;
}
.wissen-article .article-categories a:hover {
    background: var(--wissen-indigo);
    color: #fff;
}
.wissen-article h2 {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 2.5rem 0 1rem;
    color: var(--wissen-slate-900);
    scroll-margin-top: 6rem;
}
.wissen-article h3 {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.35;
    margin: 1.75rem 0 0.75rem;
    color: var(--wissen-slate-900);
    scroll-margin-top: 6rem;
}
.wissen-article p {
    margin-bottom: 1.15rem;
}
.wissen-article ul, .wissen-article ol {
    margin-bottom: 1.15rem;
    padding-left: 1.5rem;
}
.wissen-article li {
    margin-bottom: 0.5rem;
}
.wissen-article a {
    color: var(--wissen-indigo);
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 2px;
}
.wissen-article a:hover {
    color: var(--wissen-indigo-dark);
}
.wissen-article code {
    background: var(--wissen-slate-50);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.92em;
    color: var(--wissen-slate-900);
    border: 1px solid var(--wissen-slate-200);
}
.wissen-article strong {
    color: var(--wissen-slate-900);
    font-weight: 700;
}
.wissen-article figure {
    margin: 1.75rem 0;
}
.wissen-article figure img,
.wissen-article figure svg {
    width: 100%;
    height: auto;
    border-radius: 10px;
    background: #fff;
    border: 1px solid var(--wissen-slate-200);
}
.wissen-article figcaption {
    color: var(--wissen-slate-500);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    text-align: center;
    font-style: italic;
}

/* TOC */
.wissen-article .toc {
    background: var(--wissen-slate-50);
    border: 1px solid var(--wissen-slate-200);
    border-radius: 10px;
    border-left: 3px solid var(--wissen-indigo);
}
.wissen-article .toc .toc-label {
    color: var(--wissen-indigo);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.wissen-article .toc a {
    color: var(--wissen-slate-600);
    text-decoration: none;
}
.wissen-article .toc a:hover {
    color: var(--wissen-indigo);
}

/* CTA Block */
.wissen-cta {
    background: linear-gradient(135deg, var(--wissen-indigo-light) 0%, #fff 100%);
    border: 1.5px solid var(--wissen-indigo-light);
    border-left: 4px solid var(--wissen-indigo);
    border-radius: 12px;
    padding: 1.5rem 1.75rem;
    margin: 2rem 0;
}
.wissen-cta h4 {
    color: var(--wissen-indigo-dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.wissen-cta p {
    color: var(--wissen-slate-600);
    margin-bottom: 1rem;
}
.wissen-cta .btn-primary {
    background: var(--wissen-indigo);
    border-color: var(--wissen-indigo);
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    border-radius: 8px;
}
.wissen-cta .btn-primary:hover {
    background: var(--wissen-indigo-dark);
    border-color: var(--wissen-indigo-dark);
}

/* FAQ Accordion */
.wissen-article .accordion-button {
    font-weight: 600;
    color: var(--wissen-slate-900);
    background: #fff;
}
.wissen-article .accordion-button:not(.collapsed) {
    background: var(--wissen-indigo-light);
    color: var(--wissen-indigo-dark);
    box-shadow: none;
}
.wissen-article .accordion-item {
    border-color: var(--wissen-slate-200);
}

/* Related Articles */
.related-articles {
    margin-top: 4rem;
    padding-top: 2.5rem;
    border-top: 2px solid var(--wissen-slate-200);
}
.related-articles h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

/* Hub-Card auf der Uebersicht (Block 4: drei Branchen-Hubs) */
.wissen-hubs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}
.wissen-hub {
    display: block;
    padding: 1.5rem;
    background: #fff;
    border: 1.5px solid var(--wissen-slate-200);
    border-radius: 14px;
    text-decoration: none;
    color: var(--wissen-slate-900);
    transition: all 0.2s ease;
    position: relative;
}
.wissen-hub:hover {
    border-color: var(--wissen-indigo);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79,70,229,0.12);
    color: var(--wissen-slate-900);
}
.wissen-hub .hub-icon {
    width: 44px;
    height: 44px;
    background: var(--wissen-indigo-light);
    color: var(--wissen-indigo);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}
.wissen-hub .hub-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
}
.wissen-hub .hub-sub {
    color: var(--wissen-slate-500);
    font-size: 0.9rem;
}
.wissen-hub .hub-count {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: var(--wissen-indigo-light);
    color: var(--wissen-indigo);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
}

/* Preview-Banner (Entwurf) */
.wissen-preview-banner {
    background: #fef3c7;
    color: #78350f;
    text-align: center;
    padding: 0.75rem 1rem;
    font-weight: 600;
    border: 0;
    border-radius: 0;
    letter-spacing: 0.02em;
}

/* Empty-State */
.wissen-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--wissen-slate-500);
}