/* =============================================================
   sec_intro – c-sec-intro
   Erklärender Textblock für Fachartikel und Abschnittseinleitungen
   ============================================================= */

/* ── Spacing-Tokens ─────────────────────────────────────────── */
.c-sec-intro--space-top-none    { padding-top: 0; }
.c-sec-intro--space-top-small   { padding-top: 2rem; }
.c-sec-intro--space-top-medium  { padding-top: 4rem; }
.c-sec-intro--space-top-large   { padding-top: 6rem; }
.c-sec-intro--space-top-xlarge  { padding-top: 9rem; }

.c-sec-intro--space-bottom-none   { padding-bottom: 0; }
.c-sec-intro--space-bottom-small  { padding-bottom: 2rem; }
.c-sec-intro--space-bottom-medium { padding-bottom: 4rem; }
.c-sec-intro--space-bottom-large  { padding-bottom: 6rem; }
.c-sec-intro--space-bottom-xlarge { padding-bottom: 9rem; }

/* ── Basis ──────────────────────────────────────────────────── */
.c-sec-intro {
}

/* ── Hintergrundvarianten ───────────────────────────────────── */
.c-sec-intro--bg-white    { background-color: #ffffff; color: #111827; }
.c-sec-intro--bg-light    { background-color: #f8fafc; color: #111827; }
.c-sec-intro--bg-blue     { background-color: #1d4ed8; color: #f8fafc; }
.c-sec-intro--bg-dark     { background-color: #0f172a; color: #e2e8f0; }
.c-sec-intro--bg-gradient {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
    color: #e2e8f0;
}

/* ── Outer Container / Max-Width ────────────────────────────── */
.c-sec-intro__outer {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.c-sec-intro__outer--text    { max-width: 720px; }
.c-sec-intro__outer--content { max-width: 1024px; }
.c-sec-intro__outer--wide    { max-width: 1280px; }
.c-sec-intro__outer--full    { max-width: 100%; }

/* ── Grid ───────────────────────────────────────────────────── */
.c-sec-intro__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

/* Layout: with_sidenote / two_column → Zweispalter */
.c-sec-intro--layout-with_sidenote .c-sec-intro__grid,
.c-sec-intro--layout-two_column .c-sec-intro__grid {
    grid-template-columns: 1fr 320px;
    align-items: start;
}

/* Layout: centered → zentrierter Inhalt */
.c-sec-intro--layout-centered .c-sec-intro__main {
    text-align: center;
    margin: 0 auto;
}

.c-sec-intro--layout-centered .c-sec-intro__takeaway-list {
    justify-content: center;
}

/* Layout: narrow → schmale Lesespalte */
.c-sec-intro--layout-narrow .c-sec-intro__main {
    max-width: 720px;
}

/* ── Main ───────────────────────────────────────────────────── */
.c-sec-intro__main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ── Eyebrow ────────────────────────────────────────────────── */
.c-sec-intro__eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #4db4ff;
    font-family: 'Orbitron', sans-serif;
    margin: 0;
}

.c-sec-intro--bg-dark .c-sec-intro__eyebrow,
.c-sec-intro--bg-gradient .c-sec-intro__eyebrow {
    color: #a5b4fc;
}

/* ── Headline ───────────────────────────────────────────────── */
.c-sec-intro__headline {
    font-size: clamp(1.5rem, 2.8vw, 2.25rem);
    line-height: 1.25;
    font-weight: 600;
    margin: 0;
    font-family: 'Orbitron', sans-serif;
    color: #FFF;
}
h2.c-sec-intro__headline {
}
h3.c-sec-intro__headline {
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    font-weight: 600;
}

/* ── Lead ───────────────────────────────────────────────────── */
.c-sec-intro__lead {
    font-size: 1.075rem;
    line-height: 1.8;
    margin: 0;
    opacity: 0.85;
}

/* ── Inhaltsverzeichnis ─────────────────────────────────────── */
.c-sec-intro__toc {
    background: rgba(99,102,241,.06);
    border: 1px solid rgba(99,102,241,.15);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
}

.c-sec-intro__toc-title {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #6366f1;
    margin: 0 0 0.75rem;
}

.c-sec-intro__toc-list {
    margin: 0;
    padding-left: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.c-sec-intro__toc-list a {
    color: inherit;
    text-decoration: none;
    opacity: 0.8;
}

.c-sec-intro__toc-list a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* ── Answer-Box ─────────────────────────────────────────────── */
.c-sec-intro__answer-box {
    background: rgba(99,102,241,.07);
    border-left: 3px solid #6366f1;
    border-radius: 0 6px 6px 0;
    padding: 1rem 1.25rem;
    font-size: 0.95rem;
    line-height: 1.75;
}

.c-sec-intro__answer-box p:last-child { margin-bottom: 0; }

.c-sec-intro--bg-dark .c-sec-intro__answer-box,
.c-sec-intro--bg-gradient .c-sec-intro__answer-box {
    background: rgba(99,102,241,.14);
}

/* ── Richtext ───────────────────────────────────────────────── */
.c-sec-intro__richtext {
    font-size: 1rem;
    line-height: 1.8;
}

.c-sec-intro__richtext p { margin-top: 0; margin-bottom: 1.25em; }
.c-sec-intro__richtext p:last-child { margin-bottom: 0; }

.c-sec-intro__richtext h2,
.c-sec-intro__richtext h3,
.c-sec-intro__richtext h4 {
    font-weight: 700;
    line-height: 1.3;
    margin: 1.75em 0 0.625em;
}

.c-sec-intro__richtext h2 { font-size: 1.375rem; }
.c-sec-intro__richtext h3 { font-size: 1.15rem; }
.c-sec-intro__richtext h4 { font-size: 1rem; }

.c-sec-intro__richtext ul,
.c-sec-intro__richtext ol {
    padding-left: 1.5em;
    margin: 0 0 1.25em;
}

.c-sec-intro__richtext li { margin-bottom: 0.375em; }

.c-sec-intro__richtext a {
    color: #6366f1;
    text-decoration: underline;
}

.c-sec-intro__richtext code {
    background: rgba(99,102,241,.1);
    padding: 0.1em 0.35em;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: ui-monospace, 'Cascadia Code', Menlo, monospace;
}

.c-sec-intro__richtext blockquote {
    border-left: 3px solid #e5e7eb;
    margin: 1.5em 0;
    padding: 0.5em 1.25em;
    font-style: italic;
    opacity: 0.8;
}

/* ── Key Takeaways ──────────────────────────────────────────── */
.c-sec-intro__takeaways {
    border-top: 1px solid rgba(0,0,0,.08);
    padding-top: 1.5rem;
}

.c-sec-intro--bg-dark .c-sec-intro__takeaways,
.c-sec-intro--bg-gradient .c-sec-intro__takeaways {
    border-top-color: rgba(255,255,255,.1);
}

.c-sec-intro__takeaway-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.c-sec-intro__takeaway-item {
    display: flex;
    gap: 0.875rem;
    align-items: flex-start;
}

.c-sec-intro__takeaway-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
    margin-top: 0.1em;
    width: 1.5rem;
    text-align: center;
}

.c-sec-intro__takeaway-body {
    flex: 1;
}

.c-sec-intro__takeaway-title {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.25rem;
}

.c-sec-intro__takeaway-text {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.65;
    opacity: 0.75;
}

/* ── Side Note (aside) ──────────────────────────────────────── */
.c-sec-intro__sidenote {
    background: rgba(99,102,241,.06);
    border: 1px solid rgba(99,102,241,.15);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    font-size: 0.9rem;
    line-height: 1.7;
    position: sticky;
    top: 2rem;
    align-self: start;
}

.c-sec-intro--bg-dark .c-sec-intro__sidenote,
.c-sec-intro--bg-gradient .c-sec-intro__sidenote {
    background: rgba(99,102,241,.14);
    border-color: rgba(99,102,241,.25);
}

.c-sec-intro__sidenote-icon {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.c-sec-intro__sidenote-title {
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #6366f1;
    margin: 0 0 0.625rem;
}

.c-sec-intro--bg-dark .c-sec-intro__sidenote-title,
.c-sec-intro--bg-gradient .c-sec-intro__sidenote-title {
    color: #a5b4fc;
}

.c-sec-intro__sidenote-text p:last-child { margin-bottom: 0; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    .c-sec-intro--layout-with_sidenote .c-sec-intro__grid,
    .c-sec-intro--layout-two_column .c-sec-intro__grid {
        grid-template-columns: 1fr;
    }

    .c-sec-intro__sidenote {
        position: static;
    }
}

@media (max-width: 640px) {
    .c-sec-intro__takeaway-list {
        gap: 1.25rem;
    }
}