/* ---------- Design Tokens ---------- */
    :root {
        --color-primary: #be0021;
        --color-primary-dark: #be0021;
        --color-primary-light: #be0021;
        --color-accent: #e30613;
        --color-bg: #f4f6f9;
        --color-surface: #ffffff;
        --color-border: #e1e6ed;
        --color-text: #1c2733;
        --color-text-muted: #5b6b7d;
        --color-success: #2c8a48;
        --color-warning: #d98e00;
        --color-info: #1e6fc6;
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-lg: 12px;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
        --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        --header-h: 72px;
    }

    * {
        box-sizing: border-box;
    }

    html,
    body {
        margin: 0;
        padding: 0;
        font-family: var(--font-sans);
        color: var(--color-text);
        background: var(--color-bg);
        line-height: 1.55;
        font-size: 16px;
    }

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

    a:hover {
        text-decoration: underline;
    }

    .container {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ---------- Header ---------- */
    header.site-header {
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-sm);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .header-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--header-h);
    }

    .brand {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .brand-logo {
        width: 44px;
        height: 44px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        font-size: 18px;
        letter-spacing: 0.5px;
    }

    .brand-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .brand-title {
        font-weight: 700;
        color: var(--color-text);
        font-size: 16px;
    }

    .brand-subtitle {
        font-size: 12px;
        color: var(--color-text-muted);
        letter-spacing: 0.5px;
        text-transform: uppercase;
    }

    nav.main-nav ul {
        list-style: none;
        display: flex;
        gap: 4px;
        margin: 0;
        padding: 0;
    }

    nav.main-nav a {
        display: block;
        padding: 10px 18px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        color: var(--color-text);
        transition: background 0.15s, color 0.15s;
        text-decoration: none;
        font-size: 15px;
    }

    nav.main-nav a:hover {
        background: var(--color-bg);
        color: var(--color-primary);
        text-decoration: none;
    }

    nav.main-nav a.active {
        background: var(--color-primary);
        color: #fff;
    }

    .mobile-toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 8px;
    }

    .mobile-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--color-text);
        margin: 5px 0;
        transition: 0.3s;
    }

    /* ---------- Hero ---------- */
    .hero {
        background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
        color: #fff;
        padding: 48px 0 40px;
    }

    .hero h1 {
        font-size: 32px;
        margin: 0 0 8px;
        font-weight: 700;
        letter-spacing: -0.5px;
    }

    .hero p {
        font-size: 17px;
        margin: 0;
        opacity: 0.92;
        max-width: 720px;
    }

    /* ---------- Breadcrumb ---------- */
    .breadcrumb {
        padding: 0 0 20px;
    }

    .breadcrumb ol {
        list-style: none;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin: 0;
        padding: 0;
        font-size: 14px;
        color: var(--color-text-muted);
    }

    .breadcrumb li+li::before {
        content: "›";
        margin-right: 8px;
        color: var(--color-text-muted);
    }

    .breadcrumb a {
        color: var(--color-text-muted);
    }

    .breadcrumb a:hover {
        color: var(--color-primary);
    }

    .breadcrumb .current {
        color: var(--color-text);
        font-weight: 500;
    }

    /* ---------- Layout (mit / ohne Sidebar) ---------- */
    main.page {
        padding: 24px 0 64px;
    }

    .layout-wrapper {
        display: block;
    }

    .layout-with-sidebar {
        display: grid;
        grid-template-columns: 280px 1fr;
        gap: 32px;
        align-items: flex-start;
    }

    /* ---------- Side Nav (links) ---------- */
    .side-nav {
        position: sticky;
        top: calc(var(--header-h) + 16px);
        max-height: calc(100vh - var(--header-h) - 32px);
        overflow-y: auto;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: 12px 8px;
        box-shadow: var(--shadow-sm);
        font-size: 14px;
    }

    .side-nav-header {
        padding: 6px 12px 12px;
        border-bottom: 1px solid var(--color-border);
        margin-bottom: 8px;
    }

    .side-nav-header .label {
        font-size: 11px;
        letter-spacing: 0.6px;
        text-transform: uppercase;
        color: var(--color-text-muted);
        font-weight: 600;
    }

    .side-nav-header .title {
        font-size: 16px;
        font-weight: 700;
        color: var(--color-primary-dark);
        margin-top: 2px;
    }

    .side-nav-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .nav-group {
        margin-bottom: 2px;
    }

    .nav-group-toggle {
        display: flex;
        align-items: center;
        width: 100%;
        gap: 8px;
        padding: 8px 12px;
        border-radius: var(--radius-sm);
        cursor: pointer;
        background: transparent;
        border: none;
        text-align: left;
        font: inherit;
        color: var(--color-text);
        font-weight: 600;
        font-size: 13.5px;
        transition: background 0.12s;
    }

    .nav-group-toggle:hover {
        background: var(--color-bg);
    }

    .nav-group-toggle .chevron {
        width: 12px;
        height: 12px;
        flex: 0 0 12px;
        transition: transform 0.18s;
        color: var(--color-text-muted);
    }

    .nav-group.open>.nav-group-toggle .chevron {
        transform: rotate(90deg);
    }

    .nav-group-toggle .group-label {
        flex: 1;
    }

    .nav-group-toggle .badge-count {
        font-size: 11px;
        color: var(--color-text-muted);
        font-weight: 500;
    }

    .nav-group-children {
        list-style: none;
        padding: 4px 0 6px 0;
        margin: 0;
        display: none;
        border-left: 2px solid var(--color-border);
        margin-left: 18px;
    }

    .nav-group.open>.nav-group-children {
        display: block;
    }

    .nav-group-children .nav-group {
        margin-top: 2px;
    }

    .nav-group-children .nav-group-toggle {
        padding-left: 10px;
        font-size: 13px;
    }

    .side-nav .nav-link {
        display: block;
        padding: 6px 12px 6px 14px;
        margin-left: 4px;
        border-radius: var(--radius-sm);
        color: var(--color-text);
        font-size: 13.5px;
        text-decoration: none;
        transition: background 0.1s, color 0.1s;
        border-left: 2px solid transparent;
        margin-left: -2px;
        word-break: break-word;
    }

    .side-nav .nav-link:hover {
        background: var(--color-bg);
        color: var(--color-primary);
        text-decoration: none;
    }

    .side-nav .nav-link.active {
        background: #eaf2fb;
        color: var(--color-primary-dark);
        font-weight: 600;
        border-left-color: var(--color-primary);
    }

    .side-nav-footer {
        margin-top: 12px;
        padding: 10px 12px;
        border-top: 1px solid var(--color-border);
        font-size: 12px;
        color: var(--color-text-muted);
        line-height: 1.5;
    }

    .side-nav-footer strong {
        color: var(--color-primary-dark);
    }

    /* ---------- Content Card ---------- */
    .content-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: 36px 44px;
        box-shadow: var(--shadow-sm);
    }

    .edit-content-card {
        width: 100%;
        max-width: none;
    }

    .startpage-content-card {
        width: 100%;
        max-width: none;
    }

    .content-card h2 {
        font-size: 26px;
        margin: 0 0 8px;
        color: var(--color-primary);
    }

    .content-card .lead {
        font-size: 17px;
        color: var(--color-text-muted);
        margin: 0 0 28px;
    }

    .content-card h3 {
        margin-top: 28px;
        margin-bottom: 10px;
        font-size: 20px;
        color: var(--color-text);
    }

    .content-card h4 {
        margin-top: 18px;
        margin-bottom: 6px;
        font-size: 16px;
    }

    .content-card ul {
        padding-left: 20px;
    }

    .content-card ul li {
        margin-bottom: 6px;
    }

    .doku-image {
        margin: 28px 0;
    }

    .doku-image img {
        display: block;
        width: 100%;
        height: auto;
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
    }

    .doku-image-caption {
        margin-top: 8px;
        color: var(--color-text-muted);
        font-size: 14px;
        line-height: 1.45;
    }

    .doku-download {
        margin: 20px 0;
        padding: 16px 18px;
        background: #f6f9fd;
        border: 1px solid var(--color-border);
        border-left: 4px solid var(--color-primary);
        border-radius: var(--radius-md);
    }

    .doku-download-link {
        color: var(--color-primary-dark);
        font-weight: 700;
        text-decoration: none;
    }

    .doku-download-link:hover {
        text-decoration: underline;
    }

    .doku-download-meta {
        color: var(--color-text-muted);
        font-size: 14px;
        font-weight: 500;
    }

    .doku-download-description {
        margin: 8px 0 0;
        color: var(--color-text-muted);
        font-size: 14.5px;
    }

    .doku-video {
        position: relative;
        max-width: 100%;
        aspect-ratio: 16 / 9;
        height: auto;
        margin: 28px auto;
        overflow: hidden;
        background: #111827;
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
    }

    .doku-video-media {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }

    .doku-editor-message {
        margin: 14px 0;
        padding: 12px 14px;
        background: #eaf2fb;
        border: 1px solid var(--color-border);
        border-left: 4px solid var(--color-info);
        border-radius: var(--radius-sm);
        color: var(--color-text-muted);
        font-size: 14px;
    }

    .info-box {
        background: #eaf2fb;
        border-left: 4px solid var(--color-primary-light);
        padding: 14px 18px;
        border-radius: var(--radius-sm);
        margin: 20px 0;
        font-size: 14.5px;
    }

    .info-box.warn {
        background: #fff6e6;
        border-left-color: var(--color-warning);
    }

    .info-box.todo {
        background: #f6f9fd;
        border-left-color: var(--color-text-muted);
    }

    .info-box strong {
        color: var(--color-primary-dark);
    }

    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 16px;
        margin: 24px 0 8px;
    }

    .quick-card {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: 18px;
        transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
        background: #fff;
        cursor: pointer;
    }

    .quick-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary-light);
        text-decoration: none;
    }

    .quick-card .icon {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        background: #eaf2fb;
        color: var(--color-primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 10px;
    }

    .quick-card h4 {
        margin: 0 0 4px;
        font-size: 15px;
        color: var(--color-text);
    }

    .quick-card p {
        margin: 0;
        font-size: 13.5px;
        color: var(--color-text-muted);
    }

    /* Tabelle */
    table.doc-table {
        width: 100%;
        border-collapse: collapse;
        margin: 16px 0;
        font-size: 14.5px;
    }

    table.doc-table th,
    table.doc-table td {
        text-align: left;
        padding: 10px 12px;
        border-bottom: 1px solid var(--color-border);
    }

    table.doc-table th {
        background: var(--color-bg);
        font-weight: 600;
        color: var(--color-text);
    }

    .code-info {
        background: rgb(242 242 242);
        padding: 14px 18px;
        border-radius: var(--radius-sm);
        margin: 20px 0px;
        font-size: 14px;
    }

    /* Tags */
    .tag {
        display: inline-block;
        padding: 2px 9px;
        border-radius: 999px;
        font-size: 11.5px;
        font-weight: 600;
        letter-spacing: 0.4px;
        text-transform: uppercase;
        background: #eaf2fb;
        color: var(--color-primary-dark);
        margin-right: 4px;
    }

    .tag.todo {
        background: #fff6e6;
        color: var(--color-warning);
    }

    .tag.draft {
        background: #f4e6ff;
        color: #5e2a99;
    }

    /* Page Footer Nav */
    .page-pager {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        margin-top: 28px;
        padding-top: 20px;
        border-top: 1px solid var(--color-border);
    }

    .pager-link {
        display: block;
        padding: 14px 16px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        text-decoration: none;
        color: var(--color-text);
        transition: border-color 0.12s, background 0.12s;
    }

    .pager-link:hover {
        border-color: var(--color-primary);
        background: #f6f9fd;
        text-decoration: none;
    }

    .pager-link .pager-dir {
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        color: var(--color-text-muted);
    }

    .pager-link .pager-title {
        font-weight: 600;
        color: var(--color-primary-dark);
        margin-top: 2px;
    }

    .pager-link.next {
        text-align: right;
    }

    .pager-link.disabled {
        opacity: 0.4;
        pointer-events: none;
    }

    /* ---------- Changelog Hub ---------- */
    .hub-header {
        display: flex;
        flex-wrap: wrap;
        align-items: flex-end;
        justify-content: space-between;
        gap: 16px;
        margin-bottom: 24px;
    }

    .btn {
        display: inline-block;
        padding: 10px 18px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        font-size: 14px;
        text-decoration: none;
        cursor: pointer;
        border: 1px solid transparent;
        transition: background 0.15s, border-color 0.15s;
    }

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

    .btn-primary:hover {
        background: var(--color-primary-dark);
        text-decoration: none;
    }

    .btn-outline {
        background: transparent;
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .btn-outline:hover {
        background: var(--color-primary);
        color: #fff;
        text-decoration: none;
    }

    .latest-release-wrapper {
        margin-bottom: 32px;
    }

    .version-card {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 24px 28px;
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
        background: #fff;
        transition: box-shadow 0.15s, border-color 0.15s;
        text-decoration: none;
        color: inherit;
    }

    .version-card.latest {
        background: linear-gradient(135deg, #f0f6fd 0%, #e6efff 100%);
        border-color: var(--color-primary-light);
    }

    .version-card:hover {
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary);
        text-decoration: none;
    }

    .version-card .card-content {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .badge-latest {
        display: inline-block;
        background: var(--color-primary);
        color: #fff;
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.6px;
        text-transform: uppercase;
        padding: 3px 10px;
        border-radius: 12px;
        width: fit-content;
        margin-bottom: 4px;
    }

    .version-number {
        font-size: 22px;
        font-weight: 700;
        color: var(--color-primary-dark);
    }

    .version-date {
        font-size: 14px;
        color: var(--color-text-muted);
    }

    .version-arrow {
        font-size: 24px;
        color: var(--color-primary);
    }

    .previous-versions-title {
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 0.6px;
        color: var(--color-text-muted);
        text-transform: uppercase;
        margin: 32px 0 12px;
    }

    .versions-list {
        display: flex;
        flex-direction: column;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        overflow: hidden;
        background: #fff;
    }

    .version-list-item {
        display: grid;
        grid-template-columns: 1fr auto auto;
        align-items: center;
        gap: 16px;
        padding: 16px 20px;
        border-bottom: 1px solid var(--color-border);
        text-decoration: none;
        color: var(--color-text);
        transition: background 0.12s;
    }

    .version-list-item:last-child {
        border-bottom: none;
    }

    .version-list-item:hover {
        background: #f6f9fd;
        text-decoration: none;
    }

    .version-list-item .version-number {
        font-size: 16px;
        font-weight: 600;
    }

    .version-list-item .version-date {
        font-size: 14px;
    }

    .version-list-item .version-arrow {
        color: var(--color-primary);
    }

    .toggle-filters {
        list-style: none;
        padding: 0;
        margin: 0 0 28px;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .toggle-filters button {
        background: #fff;
        border: 1px solid var(--color-border);
        border-radius: 999px;
        padding: 7px 14px;
        cursor: pointer;
        font-size: 13.5px;
        color: var(--color-text);
        transition: background 0.12s, border-color 0.12s, color 0.12s;
    }

    .toggle-filters button:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .toggle-filters button.active {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: #fff;
    }

    .release-date {
        display: inline-block;
        background: #eaf2fb;
        color: var(--color-primary-dark);
        padding: 4px 12px;
        border-radius: 12px;
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 24px;
    }

    .component-section {
        margin-bottom: 32px;
        padding-bottom: 24px;
        border-bottom: 1px dashed var(--color-border);
    }

    .component-section:last-child {
        border-bottom: none;
    }

    .component-section>h4 {
        font-size: 18px;
        margin: 0 0 14px;
        color: var(--color-primary-dark);
    }

    .no-changes {
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--color-text-muted);
        font-style: italic;
        font-size: 14px;
        padding: 8px 0;
    }

    .no-changes::before {
        content: "—";
        color: var(--color-border);
        font-style: normal;
    }

    .changelog-entry {
        background: #fff;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: 16px 20px;
        margin-bottom: 12px;
        border-left-width: 4px;
    }

    .changelog-entry.feature {
        border-left-color: var(--color-success);
    }

    .changelog-entry.improvement {
        border-left-color: var(--color-info);
    }

    .changelog-entry.bugfix {
        border-left-color: var(--color-accent);
    }

    .changelog-entry.security {
        border-left-color: var(--color-warning);
    }

    .entry-header {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 6px;
    }

    .entry-title {
        font-size: 15px;
        font-weight: 600;
        margin: 0;
        flex: 1;
    }

    .entry-type {
        font-size: 11px;
        font-weight: 700;
        letter-spacing: 0.6px;
        text-transform: uppercase;
        padding: 2px 9px;
        border-radius: 10px;
        color: #fff;
    }

    .entry-type.feature {
        background: var(--color-success);
    }

    .entry-type.improvement {
        background: var(--color-info);
    }

    .entry-type.bugfix {
        background: var(--color-accent);
    }

    .entry-type.security {
        background: var(--color-warning);
    }

    .entry-content p {
        margin: 0;
        font-size: 14.5px;
        color: var(--color-text);
    }

    /* ---------- Footer ---------- */
    footer.site-footer {
        background: #fff;
        border-top: 1px solid var(--color-border);
        padding: 24px 0;
        color: var(--color-text-muted);
        font-size: 14px;
        margin-top: 32px;
    }

    .footer-content {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 12px;
    }

    /* ---------- Mobile ---------- */
    .sidebar-mobile-toggle {
        display: none;
        width: 100%;
        margin-bottom: 12px;
        padding: 12px 16px;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        cursor: pointer;
        text-align: left;
        font: inherit;
        font-size: 14px;
        font-weight: 600;
        color: var(--color-primary-dark);
        box-shadow: var(--shadow-sm);
    }

    @media (max-width: 980px) {
        .layout-with-sidebar {
            grid-template-columns: 1fr;
            gap: 0;
        }

        .sidebar-mobile-toggle {
            display: block;
        }

        .side-nav {
            position: static;
            max-height: none;
            margin-bottom: 16px;
            display: none;
        }

        .side-nav.open {
            display: block;
        }

        .content-card {
            padding: 24px;
        }
    }

    @media (max-width: 820px) {
        .mobile-toggle {
            display: block;
        }

        nav.main-nav {
            display: none;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 12px 0;
            box-shadow: var(--shadow-md);
        }

        nav.main-nav.open {
            display: block;
        }

        nav.main-nav ul {
            flex-direction: column;
            gap: 0;
            padding: 0 12px;
        }

        nav.main-nav a {
            padding: 12px 16px;
            border-radius: 6px;
        }

        .hero h1 {
            font-size: 24px;
        }

        .hero p {
            font-size: 15px;
        }

        .header-content {
            position: relative;
        }

        .version-list-item {
            grid-template-columns: 1fr auto;
        }

        .version-list-item .version-arrow {
            display: none;
        }

        .page-pager {
            grid-template-columns: 1fr;
        }
    }