/* ==========================================================================
   MODUL: Buchreihe & Landingpage
   ========================================================================== */

/* Hero Bereich */
.book-hero {
    padding: 70px 0 48px;
    background: linear-gradient(135deg, #eef8fa, #ffffff);
}

.book-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 56px;
    align-items: center;
}

.lead-wide {
    max-width: 760px;
    color: var(--muted);
    font-size: 1.18rem;
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 28px 0 0;
}

/* Buch-Cover Einstellungen */
.book-cover {
    display: flex;
    justify-content: center;
    padding: 16px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.book-cover img {
    max-height: 280px; /* Hier lässt sich die Bildgröße zentral anpassen */
    max-width: 100%;
    object-fit: contain;
}

/* Sektionen */
.book-section {
    padding: 58px 0;
}

.lesson-band {
    background: var(--white);
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr);
    gap: 42px;
    align-items: center;
}

/* Pfad-Liste (Die 6 Bände) */
.path-list {
    display: grid;
    gap: 14px;
    margin-top: 24px;
}

.path-step {
    display: grid;
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 16px;
    padding: 18px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 22px rgba(20, 55, 70, .08);
}

.path-step strong {
    color: var(--blue-dark);
}

.path-step span:first-child {
    color: var(--blue);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* Netzwerk Grafische Vorschau */
.network-card {
    padding: 24px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.network-title {
    margin: 0 0 18px;
    color: var(--blue-dark);
    font-weight: 800;
}

.network-map {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    align-items: center;
}

.node {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: 2px solid #c7dce3;
    border-radius: 8px;
    background: #f7fbfc;
    color: var(--blue-dark);
    font-weight: 800;
    text-align: center;
}

.node.core {
    border-color: var(--blue);
    background: #eaf5f8;
}

.line {
    height: 2px;
    background: #9ebbc5;
}

/* Gründe-Grid */
.reason-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 26px;
}

.reason {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfdfe;
}

.reason strong {
    display: block;
    margin-bottom: 8px;
    color: var(--blue-dark);
}

/* FAQ Akkordeon */
.faq-list {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.faq-item {
    background: var(--white);
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.faq-item summary {
    font-weight: bold;
    cursor: pointer;
    color: var(--blue-dark);
    font-size: 1.05rem;
}

.faq-item p {
    margin: 12px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

/* Responsive Anpassungen für Buchreihe */
@media (max-width: 900px) {
    .book-hero-grid,
    .split {
        grid-template-columns: 1fr;
    }
    .book-cover {
        justify-content: flex-start;
    }
    .book-cover img {
        max-height: 240px;
    }
    .reason-grid,
    .network-map {
        grid-template-columns: 1fr;
    }
    .line {
        height: 16px;
        width: 2px;
        margin: 0 auto;
    }
}