:root {
    --color-primary: #1e3a8a;
    --color-primary-hover: #172554;
    --color-secondary: #0d9488;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-success: #15803d;
    --color-warning-bg: #fef3c7;
    --color-warning-text: #92400e;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    }

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    }

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    }

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: var(--spacing-md);
    }

.demo-banner {
    display: none;
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    font-size: var(--font-size-sm);
    text-align: center;
    border-bottom: 1px solid #fde68a;
    }

.demo-banner .container {
    padding: var(--spacing-xs) var(--spacing-md);
    }

.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 20;
    }

.header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    }

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    }

.brand-logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
    }

.search-form {
    flex: 1 1 320px;
    max-width: 520px;
    }

.search-input-wrap {
    display: flex;
    align-items: center;
    background-color: #f1f5f9;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    }

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    outline: none;
    }

.search-btn {
    border: none;
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 0 var(--spacing-md);
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    }

.search-btn:hover {
    background-color: var(--color-primary-hover);
    }

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    }

.nav-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-sm);
    }

.nav-link:hover {
    text-decoration: underline;
    }

.cart-trigger {
    min-height: 40px;
    min-width: 40px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
    }

.cart-badge {
    background-color: var(--color-secondary);
    color: #ffffff;
    font-size: var(--font-size-sm);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    }

.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    }

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    }

.catalog-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
    }

.sidebar-categories {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    }

.sidebar-heading {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    border-bottom: 2px solid #e0e7ff;
    padding-bottom: var(--spacing-xs);
    }

.sidebar-subheading {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    }

.category-nav {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    margin-bottom: var(--spacing-md);
    }

.category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-sm);
    }

.category-link:hover {
    background-color: #f1f5f9;
    color: var(--color-primary);
    }

.category-link.is-active {
    background-color: #e0e7ff;
    color: var(--color-primary);
    font-weight: 600;
    }

.category-badge {
    background-color: #f1f5f9;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    }

.sidebar-box {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-sm);
    }

.catalog-layout-full {
    display: block;
    margin-top: var(--spacing-md);
    }

.catalog-actions-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    }

.sort-form-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    }

.sort-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
    }

.sort-select {
    width: auto;
    min-width: 190px;
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background-color: #ffffff;
    }

.catalog-content {
    flex: 1;
    }

.catalog-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    }

.catalog-header h1 {
    font-size: var(--font-size-xl);
    line-height: 1.25;
    }

.filter-reset-link {
    font-size: var(--font-size-sm);
    color: #dc2626;
    text-decoration: none;
    font-weight: 600;
    }

.filter-reset-link:hover {
    text-decoration: underline;
    }

.alert-empty {
    background-color: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    }

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    }

.product-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--spacing-md);
    transition: box-shadow 0.15s ease;
    }

.product-card:hover {
    box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
    }

.product-card-img-wrap {
    display: flex;
    justify-content: center;
    background-color: #f8fafc;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    }

.product-card-img {
    width: 160px;
    height: 200px;
    object-fit: contain;
    }

.product-card-author {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
    }

.product-card h2 {
    margin: 0;
    padding: 0;
    font-size: inherit;
    line-height: inherit;
    }

.product-card-title {
    display: inline-block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text);
    text-decoration: none;
    }

.product-card-title:hover {
    color: var(--color-primary);
    }

.product-card-footer {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.5rem !important;
    border-top: 1px solid var(--color-border) !important;
    padding-top: var(--spacing-sm) !important;
    font-size: 0.85rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
    }

.product-card-price-row {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    width: 100% !important;
    }

.product-card-price {
    font-size: 1.05rem !important;
    font-weight: 700 !important;
    color: var(--color-primary) !important;
    white-space: nowrap !important;
    }

.product-card-actions {
    display: flex !important;
    align-items: stretch !important;
    gap: 0.4rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
    }

.card-order-form {
    display: flex !important;
    flex: 1 1 50% !important;
    width: 50% !important;
    margin: 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
    }

.btn-card-details {
    display: inline-flex !important;
    flex: 1 1 50% !important;
    width: 50% !important;
    min-height: 34px !important;
    box-sizing: border-box !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0.45rem 0.5rem !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    color: var(--color-text-muted) !important;
    background-color: #f1f5f9 !important;
    border: 1px solid var(--color-border) !important;
    border-radius: var(--radius-sm) !important;
    text-decoration: none !important;
    transition: background-color 0.15s ease, color 0.15s ease !important;
    white-space: nowrap !important;
    text-align: center !important;
    cursor: pointer !important;
    }

.btn-card-details:hover {
    background-color: #e2e8f0 !important;
    color: var(--color-text) !important;
    }

.btn-card-order {
    display: inline-flex !important;
    flex: 1 1 100% !important;
    width: 100% !important;
    min-height: 34px !important;
    box-sizing: border-box !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0.45rem 0.5rem !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    color: #ffffff !important;
    background-color: var(--color-primary) !important;
    border: 1px solid var(--color-primary) !important;
    border-radius: var(--radius-sm) !important;
    cursor: pointer !important;
    text-decoration: none !important;
    transition: background-color 0.15s ease !important;
    white-space: nowrap !important;
    text-align: center !important;
    }

.btn-card-order:hover {
    background-color: var(--color-primary-hover) !important;
    border-color: var(--color-primary-hover) !important;
    }

.btn-card-order.is-in-cart {
    display: inline-flex !important;
    flex: 1 1 50% !important;
    width: 50% !important;
    background-color: #047857 !important;
    border-color: #047857 !important;
    color: #ffffff !important;
    }

.btn-card-order.is-in-cart:hover {
    background-color: #065f46 !important;
    border-color: #065f46 !important;
    }

.product-detail-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    }

.product-figure {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: center;
    }

.product-detail-img {
    width: 100%;
    max-width: 380px;
    height: auto;
    aspect-ratio: 4 / 5;
    object-fit: contain;
    }

.product-info-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    }

.product-contributors {
    font-size: var(--font-size-base);
    color: var(--color-secondary);
    font-weight: 600;
    }

.product-title {
    font-size: var(--font-size-xl);
    line-height: 1.25;
    }

.product-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    }

.product-price-box {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    }

.product-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    }

.product-vat {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    }

.product-stock-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-success);
    }

.product-order-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    }

.qty-input {
    width: 76px;
    min-height: 44px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    text-align: center;
    }

.btn-primary {
    min-height: 44px;
    min-width: 44px;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    }

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    }

.biblio-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    }

.section-heading {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    }

.biblio-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    }

.biblio-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    padding: 0.25rem 0;
    border-bottom: 1px solid #f1f5f9;
    }

.biblio-row dt {
    color: var(--color-text-muted);
    font-weight: 600;
    }

.product-texts-section {
    margin-top: var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    }

.text-block-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    }

.text-block-card h3 {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    }

.text-block-content {
    white-space: pre-line;
    }

/* ==========================================================================
   Footer (Prod Shop Referenz: ms-adam.de)
   ========================================================================== */

footer#footer,
.footer,
.site-footer,
.shop-footer {
    margin-top: 80px;
    background-color: #666666;
    color: #ffffff;
    font-size: 80%;
    line-height: 1.5;
    }

.footer p {
    margin-bottom: 2px;
    }

.footer a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.15s ease;
    }

.footer a:hover,
.footer a:focus {
    color: darkorange;
    text-decoration: underline;
    }

.footer .subfooter {
    text-align: left;
    font-size: 120%;
    padding: 30px 0 40px;
    }

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    }

.footer-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    }

@media (min-width: 768px) {
    .footer-columns {
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
        }
    }

.footer .footer-content h2 {
    font-size: 125%;
    padding-top: 0;
    padding-bottom: 8px;
    margin: 0 0 10px 0;
    color: #eeeeee;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    }

.footer .footer-content .footer-item {
    display: block;
    padding: 3px 0;
    color: #ffffff;
    }

.footer .footer-content .footer-copyright {
    font-size: 75%;
    padding-top: 16px;
    display: block;
    color: #cccccc;
    }

.footer .footer-content .footer-copyright a {
    color: #ffffff;
    text-decoration: underline;
    }

.footer .footer-content .footer-copyright a:hover {
    color: darkorange;
    }

.footer-revokeform {
    margin-top: 10px;
    display: inline-block;
    color: #ffe470 !important;
    font-weight: bold;
    font-size: 110%;
    }

.footer-revokeform:hover {
    color: #ffffff !important;
    }

@media (min-width: 640px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        }
    }

@media (min-width: 768px) {
    .product-detail-layout {
        display: grid;
        grid-template-columns: 380px 1fr;
        gap: var(--spacing-xl);
        }
    }

@media (min-width: 1024px) {
    .catalog-layout {
        display: grid;
        grid-template-columns: 260px 1fr;
        gap: var(--spacing-xl);
        }
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
        }
    .cart-layout {
        display: grid;
        grid-template-columns: 1fr 360px;
        gap: var(--spacing-xl);
        align-items: start;
        }
    }

/* Cart Styles */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    }

.header-cart-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-sm);
    min-height: 44px;
    transition: all 0.15s ease;
    }

.header-cart-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    }

.cart-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background-color: var(--color-primary);
    color: #ffffff;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    }

.cart-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
    }

.cart-table-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    }

.cart-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: var(--font-size-sm);
    }

.cart-table th {
    background-color: #f8fafc;
    padding: var(--spacing-md);
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    }

.cart-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
    }

.cart-table tr:last-child td {
    border-bottom: none;
    }

.cart-item-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    }

.cart-item-img {
    width: 60px;
    height: 75px;
    object-fit: contain;
    background-color: #f8fafc;
    border-radius: var(--radius-sm);
    padding: 4px;
    border: 1px solid var(--color-border);
    }

.cart-item-title {
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    }

.cart-item-title:hover {
    color: var(--color-primary);
    }

.cart-item-sku {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
    }

.cart-qty-form {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    }

.cart-qty-input {
    width: 50px;
    min-height: 36px;
    padding: 2px 4px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
    }

.cart-btn-icon {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
    }

.cart-btn-icon:hover {
    color: #ef4444;
    background-color: #fef2f2;
    }

.cart-summary-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    }

.cart-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    }

.cart-summary-row.is-total {
    border-top: 2px solid var(--color-border);
    padding-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    }

.cart-shipping-hint {
    font-size: 0.8rem;
    color: var(--color-success);
    margin-top: -4px;
    }

.cart-tax-details {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    border-top: 1px solid #f1f5f9;
    padding-top: var(--spacing-xs);
    }

.cart-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    }

.btn-secondary {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    }

.btn-secondary:hover {
    background-color: #f8fafc;
    border-color: var(--color-text-muted);
    }

.alert-box {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    }

.alert-success {
    background-color: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
    }


/* Checkout & Confirmation Styles */
.checkout-main, .confirmation-main {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    }

.checkout-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    }

@media (min-width: 900px) {
    .checkout-layout {
        grid-template-columns: 2fr 1.2fr;
        }
    }

.checkout-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    }

.checkout-section h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-xs);
    }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    }

.form-group.full-width {
    grid-column: span 2;
    }

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    }

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: var(--font-size-base);
    }

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.2);
    }

.payment-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    }

.payment-option-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color 0.15s ease;
    }

.payment-option-card:hover {
    border-color: var(--color-primary);
    }

.payment-option-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    }

.btn-checkout-submit {
    display: block;
    width: 100%;
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 700;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: center;
    margin-top: var(--spacing-md);
    transition: background-color 0.15s ease;
    }

.btn-checkout-submit:hover {
    background-color: var(--color-primary-hover);
    }

.summary-secure-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
    margin-top: var(--spacing-sm);
    }

.confirmation-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    }

.confirmation-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: #dcfce7;
    color: var(--color-success);
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    }

.confirmation-lead {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    }

.order-details-box {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    text-align: left;
    }

.order-detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px dashed var(--color-border);
    }

.order-detail-row:last-child {
    border-bottom: none;
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-xs);
    }

.confirmation-actions {
    display: flex;
    justify-content: center;
    }

/* ==========================================================================
   Webbook & CMS Styles (Apps-Makros, Bookshelf, Slider, Tabellen)
   ========================================================================== */

.webbook-content, .webbook-container {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    line-height: 1.7;
    }

.webbook-content > *:first-child,
.webbook-container > *:first-child {
    margin-top: 0 !important;
    }

.webbook-content h1, .webbook-content h2, .webbook-content h3, .webbook-content h4,
.webbook-container h1, .webbook-container h2, .webbook-container h3, .webbook-container h4 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
    }

.webbook-content p, .webbook-container p {
    margin-bottom: 1rem;
    }

.webbook-content p::after,
.webbook-container p::after {
    content: "";
    display: table;
    clear: both;
    }

.webbook-image-left {
    float: left;
    margin: 0 1.5rem 1rem 0;
    max-width: 250px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    }

.webbook-macro {
    margin: 2.5rem 0;
    clear: both;
    }

.webbook-tipps-caption {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 0.5rem;
    }

.webbook-tipps-hint {
    margin-bottom: 1.25rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    }

/* Bookshelf & Multi-Column Grids */
.columns-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.columns-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.columns-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.columns-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.columns-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

.product-grid.columns-4, .bookshelf-grid.columns-4 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin: 1.5rem 0;
    }

.bookshelf-grid {
    background: linear-gradient(to bottom, #f8fafc 0%, #e2e8f0 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-bottom: 6px solid #94a3b8;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
    }

.product-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    }

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    }

.product-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
    }

.product-card-image-wrap {
    height: 240px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0.5rem;
    }

.product-card-image-wrap img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    }

.product-card-info {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    }

.product-card-author {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
    }

.product-card-title {
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    flex-grow: 1;
    }

.product-card-price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 0.5rem;
    }

/* Hero Slider: Läuft über 100% Bildschirmbreite mit nahtlosem Hintergrund & zentriertem Inhalt */
.hero-slider-wrap {
    width: 100%;
    margin: 0;
    padding: 0;
    background-color: #0b1120;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    }

.hero-slider-wrap .webbook-slider {
    width: 100%;
    max-width: 100%;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    background-color: transparent;
    }

.hero-slider-wrap .slider-frame {
    width: 100%;
    height: 250px;
    max-height: 250px;
    background-color: transparent;
    position: relative;
    overflow: hidden;
    }

.hero-slider-wrap .wb-slider-content {
    width: 100%;
    height: 100%;
    position: relative;
    }

/* Bild-Container zentriert bis 1240px, damit Schriften & Cover gestochen scharf & unbeschnitten bleiben */
.hero-slider-wrap .wb-slider-fill {
    width: 100%;
    max-width: 1240px;
    height: 250px;
    max-height: 250px;
    object-fit: contain;
    object-position: center;
    display: block;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    }

/* Vollbreite Hintergründe je Slide passend zur jeweiligen Farbwelt */
.hero-slider-wrap .wb-slider-content:nth-child(1) {
    background: linear-gradient(90deg, #0f172a 0%, #1e3a8a 100%);
    }

.hero-slider-wrap .wb-slider-content:nth-child(2) {
    background: linear-gradient(90deg, #18181b 0%, #27272a 100%);
    }

.hero-slider-wrap .wb-slider-content:nth-child(3) {
    background: linear-gradient(90deg, #111827 0%, #374151 100%);
    }

.hero-slider-wrap .wb-slider-content:nth-child(4) {
    background: linear-gradient(90deg, #0a1e3c 0%, #144b82 100%);
    }

.hero-slider-wrap .wb-slider-content:nth-child(5) {
    background: linear-gradient(90deg, #141423 0%, #2d193c 100%);
    }

.hero-slider-wrap .wb-slider-content:nth-child(6) {
    background: linear-gradient(90deg, #064e3b 0%, #047857 100%);
    }

.hero-slider-wrap .slider-nav {
    width: 100%;
    background: #0b1120;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

.hero-slider-wrap .slider-nav-dot {
    background-color: #475569;
    }

.hero-slider-wrap .slider-nav-dot-active {
    background-color: #38bdf8;
    }

.hero-slider-wrap .slider-nav-prev,
.hero-slider-wrap .slider-nav-next {
    color: #cbd5e1;
    }

.hero-slider-wrap .slider-nav-prev:hover,
.hero-slider-wrap .slider-nav-next:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    }

/* Webbook Slider */
.webbook-slider {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin: 1.5rem 0 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    background-color: #ffffff;
    user-select: none;
    }

.slider-frame {
    position: relative;
    width: 100%;
    height: 250px;
    max-height: 250px;
    overflow: hidden;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    align-items: center;
    }

.wb-slider-content {
    grid-column: 1;
    grid-row: 1;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
    pointer-events: none;
    }

.wb-slider-content.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    position: relative;
    z-index: 1;
    }

.wb-slider-content a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
    cursor: pointer;
    }

.wb-slider-fill {
    width: 100%;
    height: 250px;
    max-height: 250px;
    display: block;
    object-fit: cover;
    margin: 0 auto;
    }

/* Slider Navigation (Dots & Pfeile) */
.slider-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 0.5rem;
    background: #ffffff;
    border-top: 1px solid var(--color-border);
    position: relative;
    z-index: 10;
    }

.slider-nav-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #cbd5e1;
    border: none;
    cursor: pointer;
    transition: background-color 0.25s ease, opacity 0.25s ease;
    padding: 0;
    outline: none;
    opacity: 0.7;
    }

.slider-nav-dot:hover {
    background-color: #94a3b8;
    opacity: 1;
    }

.slider-nav-dot-active {
    background-color: #64748b;
    opacity: 1;
    }

.slider-nav-prev,
.slider-nav-next {
    background: transparent;
    border: none;
    font-size: 0.95rem;
    line-height: 1;
    padding: 0.25rem 0.5rem;
    color: #94a3b8;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    }

.slider-nav-prev:hover,
.slider-nav-next:hover {
    background-color: #f1f5f9;
    color: #475569;
    }

/* Webbook Warenkorb Tabelle in Sendmail */
.webbook-cart-table th {
    background: #f8fafc;
    color: var(--color-text);
    font-weight: 600;
    }

.webbook-cart-table tfoot td {
    border-top: 1px solid var(--color-border);
    }

/* ==========================================================================
   Productbar (Horizontale Navigationsleiste aus Webbook & app_prodstructure)
   ========================================================================== */

#navbar-product, .navbar-product {
    background-color: #1e293b;
    border-bottom: 3px solid var(--color-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    position: relative;
    z-index: 100;
    }

.productbar-container {
    padding: 0 var(--spacing-md);
    position: relative;
    }

.productbar-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    white-space: nowrap;
    }

.productbar-item {
    position: relative;
    flex-shrink: 0;
    }

.productbar-link-wrapper {
    display: flex;
    align-items: center;
    }

.productbar-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.15rem;
    color: #e2e8f0;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: background-color 0.2s ease, color 0.2s ease;
    border-bottom: 3px solid transparent;
    margin-bottom: -3px;
    }

.productbar-link:hover {
    background-color: #334155;
    color: #ffffff;
    }

.productbar-link.is-active {
    background-color: #0f172a;
    color: #ffffff;
    border-bottom: 3px solid #38bdf8;
    }

.productbar-badge {
    background: #475569;
    color: #f8fafc;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 9999px;
    }

.productbar-link.is-active .productbar-badge {
    background: #0284c7;
    }

.productbar-toggle {
    display: none;
    background: transparent;
    border: none;
    color: #94a3b8;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    }

/* Dropdown Menu (Subcategories SS) */
.productbar-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background-color: #1e293b;
    border: 1px solid #334155;
    border-top: none;
    border-radius: 0 0 6px 6px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    list-style: none;
    padding: 0.35rem 0;
    margin: 0;
    z-index: 1000;
    }

.productbar-item:hover > .productbar-dropdown,
.productbar-item:focus-within > .productbar-dropdown {
    display: block;
    }

.productbar-dropdown-item {
    position: relative;
    }

.productbar-dropdown-link-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    }

.productbar-dropdown-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.6rem 1.15rem;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    }

.productbar-dropdown-link:hover,
.productbar-dropdown-item:hover > .productbar-dropdown-link-wrapper > .productbar-dropdown-link {
    background-color: #334155;
    color: #ffffff;
    }

.productbar-dropdown-link.is-active {
    background-color: #0f172a;
    color: #38bdf8;
    font-weight: 600;
    }

.productbar-dropdown-badge {
    background: #334155;
    color: #94a3b8;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 9999px;
    margin-left: 0.75rem;
    }

.productbar-dropdown-link:hover .productbar-dropdown-badge {
    background: #475569;
    color: #f8fafc;
    }

.productbar-flyout-arrow {
    padding-right: 0.75rem;
    color: #64748b;
    font-size: 0.8rem;
    pointer-events: none;
    }

.productbar-dropdown-item:hover .productbar-flyout-arrow {
    color: #ffffff;
    }

/* Flyout Menu (Item Categories NNN) */
.productbar-flyout {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 220px;
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 0 6px 6px 6px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    list-style: none;
    padding: 0.35rem 0;
    margin: 0;
    z-index: 1010;
    }

.productbar-dropdown-item:hover > .productbar-flyout,
.productbar-dropdown-item:focus-within > .productbar-flyout {
    display: block;
    }

.productbar-flyout-item {
    position: relative;
    }

.productbar-flyout-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.55rem 1.15rem;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: background-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    }

.productbar-flyout-link:hover {
    background-color: #334155;
    color: #ffffff;
    }

.productbar-flyout-link.is-active {
    background-color: #0f172a;
    color: #38bdf8;
    font-weight: 600;
    }

@media (max-width: 768px) {
    .productbar-list {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        }
    .productbar-list::-webkit-scrollbar {
        display: none;
        }
    .productbar-dropdown,
    .productbar-flyout {
        position: static;
        box-shadow: none;
        border: none;
        background-color: #0f172a;
        }
    .productbar-item:hover > .productbar-dropdown {
        display: block;
        }
    }