/* Skip-Navigation */
    .skip-link {
        position: absolute;
        top: -100%;
        left: 0;
        background: #1a365d;
        color: #fff;
        padding: 0.75rem 1.5rem;
        z-index: 9999;
        font-size: 0.875rem;
        font-weight: 600;
        text-decoration: none;
        transition: top 0.2s ease;
    }
    .skip-link:focus {
        top: 0;
    }

    /* Focus-Styles */
    *:focus-visible {
        outline: 2px solid var(--color-primary, #1a365d);
        outline-offset: 2px;
    }

    /* Custom Properties - Navy Farbschema (optimiert fuer Kontrast) */
    :root {
        --fluid-hero: clamp(2.25rem, 1.82rem + 2.14vw, 3.75rem);
        --fluid-h1: clamp(1.875rem, 1.6rem + 1.34vw, 2.5rem);
        --fluid-h2: clamp(1.5rem, 1.29rem + 1.07vw, 2rem);
        --fluid-h3: clamp(1.25rem, 1.09rem + 0.8vw, 1.625rem);
        --fluid-h4: clamp(1.125rem, 1.02rem + 0.54vw, 1.375rem);
        --fluid-lead: clamp(1.125rem, 0.96rem + 0.8vw, 1.5rem);
        --fluid-body: clamp(1rem, 0.95rem + 0.27vw, 1.125rem);
        --fluid-small: clamp(0.875rem, 0.85rem + 0.13vw, 0.9375rem);
        --fluid-xs: clamp(0.75rem, 0.72rem + 0.13vw, 0.8125rem);

        --color-primary: #1a365d;
        --color-secondary: #2c5282;
        --color-tertiary: #3d7cb8;
        --color-accent: #1e4976;
        --color-text: #2d3748;
        --color-text-strong: #1a365d;
        --color-muted: #374151;
        --color-light: #e2e8f0;
        --color-lighter: #f7fafc;
        --color-white: #ffffff;
        --color-bg: #ffffff;
        --color-surface: #f7fafc;
        --color-border: #e2e8f0;
        --color-link: #2c5282;
        --color-link-hover: #1a365d;
        --color-blockquote-text: #374151;
        --color-blockquote-border: #2c5282;
        --color-badge-bg: #e2e8f0;
        --color-badge-text: #2c5282;
        --color-hero-text: #ffffff;
        --color-hero-muted: rgba(255, 255, 255, 0.85);
        --color-hero-subtle: rgba(255, 255, 255, 0.7);
    }

    .dark {
        --color-primary: #60a5fa;
        --color-secondary: #3b82f6;
        --color-tertiary: #93c5fd;
        --color-accent: #60a5fa;
        --color-text: #e2e8f0;
        --color-text-strong: #f8fafc;
        --color-muted: #94a3b8;
        --color-light: #334155;
        --color-lighter: #1e293b;
        --color-bg: #0f172a;
        --color-surface: #1e293b;
        --color-border: #334155;
        --color-link: #60a5fa;
        --color-link-hover: #93c5fd;
        --color-blockquote-text: #e2e8f0;
        --color-blockquote-border: #3b82f6;
        --color-badge-bg: #1e293b;
        --color-badge-text: #60a5fa;
        --color-hero-text: #ffffff;
        --color-hero-muted: rgba(255, 255, 255, 0.9);
        --color-hero-subtle: rgba(255, 255, 255, 0.75);
    }

    body {
        background-color: var(--color-bg);
        color: var(--color-text);
        font-size: var(--fluid-body);
        transition: background-color 0.3s ease, color 0.3s ease;
    }

    .fluid-hero { font-size: var(--fluid-hero); }
    .fluid-h1 { font-size: var(--fluid-h1); }
    .fluid-h2 { font-size: var(--fluid-h2); }
    .fluid-h3 { font-size: var(--fluid-h3); }
    .fluid-h4 { font-size: var(--fluid-h4); }
    .fluid-lead { font-size: var(--fluid-lead); }
    .fluid-body { font-size: var(--fluid-body); }
    .fluid-small { font-size: var(--fluid-small); }
    .fluid-xs { font-size: var(--fluid-xs); }

    #progress-bar {
        position: fixed;
        top: 0;
        left: 0;
        width: 0%;
        height: 3px;
        background: linear-gradient(90deg, var(--color-secondary), var(--color-tertiary));
        z-index: 9999;
        transition: width 0.1s ease-out;
    }

    .toc-container {
        position: sticky;
        top: 2rem;
        max-height: calc(100vh - 4rem);
        overflow-y: auto;
    }

    .toc-container,
    .mobile-toc-panel {
        scrollbar-width: thin;
        scrollbar-color: var(--color-border) transparent;
    }
    .toc-container::-webkit-scrollbar,
    .mobile-toc-panel::-webkit-scrollbar {
        width: 6px;
    }
    .toc-container::-webkit-scrollbar-track,
    .mobile-toc-panel::-webkit-scrollbar-track {
        background: transparent;
    }
    .toc-container::-webkit-scrollbar-thumb,
    .mobile-toc-panel::-webkit-scrollbar-thumb {
        background-color: var(--color-border);
        border-radius: 3px;
    }

    .toc-link {
        display: block;
        padding: 0.5rem 1rem;
        color: var(--color-muted);
        border-left: 2px solid var(--color-border);
        transition: all 0.2s ease;
        font-size: var(--fluid-small);
        text-decoration: none;
    }

    .toc-link:hover {
        color: var(--color-link);
        border-left-color: var(--color-link);
        background: var(--color-surface);
    }

    .toc-link.active {
        color: var(--color-accent);
        border-left-color: var(--color-accent);
        font-weight: 600;
        background: var(--color-surface);
    }

    .toc-link.toc-h3 {
        padding-left: 2rem;
        font-size: var(--fluid-xs);
    }

    .dark .toc-link.active {
        color: var(--color-primary);
        border-left-color: var(--color-primary);
    }

    .article-content h2 {
        color: var(--color-secondary);
        font-size: var(--fluid-h2);
        font-weight: 700;
        margin-top: 3rem;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--color-border);
    }

    .article-content h3 {
        color: var(--color-tertiary);
        font-size: var(--fluid-h3);
        font-weight: 600;
        margin-top: 2rem;
        margin-bottom: 0.75rem;
    }

    .article-content h4 {
        color: var(--color-text-strong);
        font-size: var(--fluid-h4);
        font-weight: 600;
        margin-top: 1.5rem;
        margin-bottom: 0.5rem;
    }

    .article-content p {
        margin-bottom: 1.25rem;
        line-height: 1.8;
    }

    .article-content blockquote {
        border-left: 4px solid var(--color-blockquote-border);
        margin: 2rem 0;
        font-style: italic;
        color: var(--color-blockquote-text);
        background: var(--color-surface);
        padding: 1.5rem;
        padding-left: 1.5rem;
        border-radius: 0 0.5rem 0.5rem 0;
    }

    .article-content blockquote p {
        margin-bottom: 0;
    }

    .article-content ul, .article-content ol {
        margin-bottom: 1.25rem;
        padding-left: 1.5rem;
    }

    .article-content li {
        margin-bottom: 0.5rem;
        line-height: 1.7;
    }

    .article-content strong {
        color: var(--color-text-strong);
        font-weight: 600;
    }

    .article-content a {
        color: var(--color-link);
        text-decoration: underline;
        text-decoration-color: var(--color-border);
        text-underline-offset: 2px;
        transition: all 0.2s ease;
    }

    .article-content a:hover {
        color: var(--color-link-hover);
        text-decoration-color: var(--color-link-hover);
    }

    .external-link-icon {
        display: inline-block;
        width: 0.75em;
        height: 0.75em;
        margin-left: 0.15em;
        vertical-align: baseline;
        position: relative;
        top: -0.05em;
    }

    /* Screenreader-only text */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    .footnote {
        font-size: 0.875rem;
        color: var(--color-text);
        padding: 1rem;
        background: var(--color-surface);
        border-radius: 0.5rem;
        margin-bottom: 0.75rem;
        border-left: 3px solid var(--color-border);
    }

    .footnote-num {
        color: var(--color-link);
        font-weight: 700;
    }

    .footnote-ref {
        color: var(--color-link);
        font-weight: 600;
        cursor: pointer;
        text-decoration: none;
    }

    .footnote-ref:hover {
        color: var(--color-link-hover);
        text-decoration: underline;
    }

    .footnote-back {
        color: var(--color-muted);
        text-decoration: none;
        margin-left: 0.5rem;
    }

    .footnote-back:hover {
        color: var(--color-link);
    }

    /* Related Articles */
    .related-articles {
        margin-top: 3rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--color-border);
    }

    .related-articles h3 {
        font-size: var(--fluid-h4, 1.25rem);
        font-weight: 600;
        color: var(--color-text-strong);
        margin-bottom: 1rem;
    }

    .related-articles ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .related-articles li {
        padding: 0.5rem 0;
    }

    .related-articles li a {
        color: var(--color-link);
        text-decoration: none;
        font-weight: 500;
    }

    .related-articles li a:hover {
        color: var(--color-link-hover);
        text-decoration: underline;
    }

    .related-meta {
        color: var(--color-muted);
        font-size: var(--fluid-small, 0.875rem);
    }

    .hero-image {
        width: 100%;
        max-height: 400px;
        aspect-ratio: 1200 / 630;
        object-fit: cover;
        border-radius: 1rem;
    }

    @media (max-width: 768px) {
        .hero-image {
            max-height: 250px;
            border-radius: 0;
        }
    }

    .nav-card {
        display: block;
        background: var(--color-surface);
        border-radius: 0.75rem;
        padding: 1.5rem;
        transition: all 0.2s ease;
        border: 1px solid var(--color-border);
        text-decoration: none;
    }

    .nav-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 40px rgba(26, 54, 93, 0.1);
        border-color: var(--color-link);
    }

    .dark .nav-card {
        background: var(--color-surface);
        border-color: var(--color-border);
    }

    .dark .nav-card:hover {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        border-color: var(--color-link);
    }

    .nav-card-title {
        color: var(--color-primary);
        font-weight: 600;
        transition: color 0.2s ease;
    }

    .nav-card:hover .nav-card-title {
        color: var(--color-link);
    }

    .dark-toggle {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: 9999px;
        padding: 0.5rem;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .dark-toggle:hover {
        background: var(--color-lighter);
        border-color: var(--color-link);
    }

    .badge {
        display: inline-block;
        padding: 0.25rem 0.75rem;
        font-size: 0.75rem;
        font-weight: 600;
        border-radius: 9999px;
        background: var(--color-badge-bg);
        color: var(--color-badge-text);
    }

    .meta-text {
        color: var(--color-muted);
        font-size: 0.875rem;
    }

    .meta-separator {
        color: var(--color-border);
    }

    .site-header {
        background: rgba(255, 255, 255, 0.9);
        border-bottom: 1px solid var(--color-border);
        backdrop-filter: blur(12px);
    }

    .dark .site-header {
        background: rgba(15, 23, 42, 0.9);
    }

    .header-link {
        color: var(--color-muted);
        transition: color 0.2s ease;
    }

    .header-link:hover {
        color: var(--color-link);
    }

    @media print {
        #progress-bar,
        .toc-container,
        .dark-toggle,
        .nav-card,
        .mobile-toc-toggle,
        .mobile-toc-panel,
        .share-bar,
        .share-toast,
        #cookie-banner,
        .site-header,
        .skip-link,
        .back-to-top,
        .search-input-wrapper,
        .search-filters {
            display: none !important;
        }

        body {
            background: white !important;
            color: black !important;
        }

        * {
            box-shadow: none !important;
            text-shadow: none !important;
        }

        a, a:visited {
            color: #1a365d !important;
        }

        footer {
            margin-top: 2rem;
        }

        .article-content {
            max-width: 100% !important;
        }

        .hero-image {
            height: 300px;
            page-break-after: always;
        }

        h2, h3, h4 {
            page-break-after: avoid;
        }

        p, li {
            orphans: 3;
            widows: 3;
        }

        blockquote, table, .footnotes {
            page-break-inside: avoid;
        }

        article a[target="_blank"]::after {
            content: " (" attr(href) ")";
            font-size: 0.8em;
            color: #666;
            word-break: break-all;
        }

        .footnotes a[href^="http"]::after {
            content: " (" attr(href) ")";
            font-size: 0.8em;
            color: #666;
            word-break: break-all;
        }

        .footnote-ref a, .footnotes a[href^="#ref-"] {
            text-decoration: none;
        }

        .article-content a.footnote-ref::after {
            content: none;
        }

        .footnotes a.footnote-back {
            display: none;
        }

        section.footnotes {
            page-break-before: always;
        }
    }

    /* Progressive Image Loading */
    .img-lazy {
        opacity: 0;
        transition: opacity 0.3s ease-in;
    }
    .img-lazy.loaded {
        opacity: 1;
    }
    .img-error {
        opacity: 1;
        background: var(--color-surface);
        min-height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-muted);
        font-size: 0.875rem;
        border: 1px dashed var(--color-border);
        border-radius: 0.5rem;
    }

    /* Staggered card entrance animation */
    @keyframes fadeSlideUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .card-animate {
        opacity: 0;
        animation: fadeSlideUp 0.4s ease-out forwards;
    }
    .card-animate:nth-child(1) { animation-delay: 0ms; }
    .card-animate:nth-child(2) { animation-delay: 80ms; }
    .card-animate:nth-child(3) { animation-delay: 160ms; }
    .card-animate:nth-child(4) { animation-delay: 240ms; }
    .card-animate:nth-child(5) { animation-delay: 320ms; }
    .card-animate:nth-child(6) { animation-delay: 400ms; }

    @media (prefers-reduced-motion: reduce) {
        .card-animate {
            opacity: 1;
            animation: none;
        }
        .img-lazy {
            opacity: 1;
            transition: none;
        }
    }

    /* Cookie Consent Banner */
    #cookie-banner {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 10000;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
        padding: 1rem;
    }
    .dark #cookie-banner {
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
    }
    .cb-inner {
        max-width: 72rem;
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
    }
    .cb-inner p {
        margin: 0;
        font-size: 0.875rem;
        color: var(--color-muted);
        flex: 1;
        min-width: 200px;
    }
    .cb-inner a {
        color: var(--color-link);
        text-decoration: underline;
    }
    .cb-buttons {
        display: flex;
        gap: 0.5rem;
        flex-shrink: 0;
    }
    .cb-btn {
        padding: 0.5rem 1.25rem;
        border-radius: 0.375rem;
        font-size: 0.875rem;
        font-weight: 500;
        cursor: pointer;
        border: 1px solid var(--color-border);
        transition: all 0.2s;
    }
    .cb-deny {
        background: var(--color-surface);
        color: var(--color-muted);
    }
    .cb-deny:hover {
        background: var(--color-lighter);
    }
    .cb-accept {
        background: var(--color-secondary);
        color: white;
        border-color: var(--color-secondary);
    }
    .cb-accept:hover {
        opacity: 0.9;
    }
    .dark .cb-accept {
        background: var(--color-primary);
        border-color: var(--color-primary);
    }
    .cb-btn:focus-visible {
        outline: 2px solid #ffffff;
        outline-offset: 2px;
    }

    /* Mobile TOC */
    .mobile-toc-toggle {
        display: none;
        width: 100%;
        padding: 0.75rem 1rem;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: 0.5rem;
        color: var(--color-primary);
        font-weight: 600;
        font-size: 0.9375rem;
        cursor: pointer;
        text-align: left;
        margin-bottom: 1.5rem;
        transition: all 0.2s;
    }
    .mobile-toc-toggle:hover {
        border-color: var(--color-link);
    }
    .mobile-toc-toggle svg {
        float: right;
        transition: transform 0.2s;
    }
    .mobile-toc-toggle[aria-expanded="true"] svg {
        transform: rotate(180deg);
    }
    .mobile-toc-panel {
        display: none;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: 0.5rem;
        padding: 0.5rem 0;
        margin-bottom: 1.5rem;
        max-height: 60vh;
        overflow-y: auto;
    }
    .mobile-toc-panel[aria-hidden="false"] {
        display: block;
    }
    @media (max-width: 1023px) {
        .mobile-toc-toggle {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
    }

    /* Back-to-Top Button */
    .back-to-top {
        position: fixed;
        bottom: 2rem;
        right: 2rem;
        z-index: 9500;
        width: 3rem;
        height: 3rem;
        border-radius: 9999px;
        background: #1a365d;
        color: white;
        border: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        transform: translateY(1rem);
        transition: opacity 0.3s, transform 0.3s, background 0.2s;
        pointer-events: none;
        box-shadow: 0 4px 12px rgba(26, 54, 93, 0.3);
    }
    .back-to-top.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }
    .back-to-top:hover {
        background: #2c5282;
    }
    .dark .back-to-top {
        background: #3b82f6;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    }
    .dark .back-to-top:hover {
        background: #60a5fa;
    }
    /* Lesezeit-Icon */
    .lesezeit-icon {
        display: inline-block;
        width: 1em;
        height: 1em;
        vertical-align: -0.125em;
        margin-right: 0.25rem;
    }

    /* Responsive Tables */
    .table-responsive {
        overflow-x: auto;
        margin: 1.5rem 0;
        -webkit-overflow-scrolling: touch;
    }
    .article-content table {
        width: 100%;
        border-collapse: collapse;
        font-size: var(--fluid-small);
    }
    .article-content th {
        background: var(--color-surface);
        color: var(--color-text-strong);
        font-weight: 600;
        padding: 0.75rem 1rem;
        border: 1px solid var(--color-border);
        white-space: nowrap;
    }
    .article-content td {
        padding: 0.75rem 1rem;
        border: 1px solid var(--color-border);
        color: var(--color-text);
    }
    .article-content tbody tr:nth-child(even) {
        background: var(--color-surface);
    }
    .dark .article-content tbody tr:nth-child(even) {
        background: rgba(30, 41, 59, 0.5);
    }

    /* Series Progress Dots */
    .series-progress {
        display: flex;
        gap: 0.5rem;
        margin-top: 0.5rem;
        margin-bottom: 0.75rem;
    }
    .progress-dot {
        position: relative;
        width: 0.75rem;
        height: 0.75rem;
        border-radius: 9999px;
        border: 2px solid var(--color-secondary);
        background: transparent;
        transition: all 0.2s;
        text-decoration: none;
    }
    .progress-dot::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 2.75rem;
        height: 2.75rem;
        border-radius: 9999px;
    }
    .progress-dot:hover {
        background: var(--color-secondary);
        transform: scale(1.3);
    }
    .progress-dot.active {
        background: var(--color-secondary);
    }
    .dark .progress-dot {
        border-color: var(--color-primary);
    }
    .dark .progress-dot:hover {
        background: var(--color-primary);
    }
    .dark .progress-dot.active {
        background: var(--color-primary);
    }
    @media (max-width: 768px) {
        .series-progress {
            gap: 0.75rem;
        }
        .progress-dot {
            width: 1rem;
            height: 1rem;
        }
        .progress-dot:hover {
            transform: scale(1.2);
        }
    }

    /* Share Bar */
    .share-bar {
        display: flex;
        gap: 0.5rem;
        margin-top: 0.75rem;
    }
    .share-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 2.25rem;
        height: 2.25rem;
        border-radius: 9999px;
        border: 1px solid var(--color-border);
        background: var(--color-surface);
        color: var(--color-muted);
        cursor: pointer;
        transition: all 0.2s;
        text-decoration: none;
    }
    .share-btn:hover {
        border-color: var(--color-link);
        color: var(--color-link);
    }
    .share-btn svg {
        width: 1rem;
        height: 1rem;
    }
    .share-toast {
        position: fixed;
        bottom: 5rem;
        left: 50%;
        transform: translateX(-50%) translateY(1rem);
        background: var(--color-primary);
        color: white;
        padding: 0.5rem 1.25rem;
        border-radius: 0.5rem;
        font-size: 0.875rem;
        opacity: 0;
        transition: opacity 0.3s, transform 0.3s;
        z-index: 10001;
        pointer-events: none;
    }
    .share-toast.visible {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    .dark .share-toast {
        background: var(--color-secondary);
    }