/* === CSS extrahiert aus print.html (extrahiert 2026-04-26) === */
  @import url('/shared/fonts/inter.css');
  * { margin: 0; padding: 0; box-sizing: border-box; }

  :root {
    --bg: linear-gradient(145deg, #eef2f7 0%, #e4ecf4 25%, #dfe8f0 50%, #e8eef5 75%, #f0f4f8 100%);
    --nav-bg: rgba(255,255,255,0.55);
    --nav-border: rgba(255,255,255,0.5);
    --card-bg: rgba(255,255,255,0.45);
    --card-border: rgba(255,255,255,0.6);
    --card-hover-bg: rgba(255,255,255,0.65);
    --card-shadow: 0 2px 16px rgba(0,0,0,0.04);
    --text-primary: #1c1c1e;
    --text-secondary: #636366;
    --text-tertiary: #8e8e93;
    --badge-bg: rgba(4,179,214,0.1);
    --badge-color: #04b3d6;
    --toggle-bg: rgba(0,0,0,0.06);
    --toggle-knob: #fff;
  }

  [data-theme="dark"] {
    --bg: linear-gradient(145deg, #0a0a1a 0%, #0f1528 20%, #151022 40%, #1a0f1e 60%, #12111a 80%, #0d1318 100%);
    --nav-bg: rgba(255,255,255,0.05);
    --nav-border: rgba(255,255,255,0.09);
    --card-bg: rgba(255,255,255,0.06);
    --card-border: rgba(255,255,255,0.1);
    --card-hover-bg: rgba(255,255,255,0.1);
    --card-shadow: 0 2px 16px rgba(0,0,0,0.2);
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #636366;
    --badge-bg: rgba(4,179,214,0.15);
    --badge-color: #2cc5e4;
    --toggle-bg: rgba(255,255,255,0.1);
    --toggle-knob: #1c1c1e;
  }

  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    min-height: 100vh;
    background: var(--bg);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    -webkit-font-smoothing: antialiased;
    transition: background 0.4s;
  }

  @keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  /* ===== NAV ===== */
  nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(44px) saturate(180%);
    -webkit-backdrop-filter: blur(44px) saturate(180%);
    border-bottom: 1px solid var(--nav-border);
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s;
  }

  .nav-left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex-shrink: 1;
    overflow: hidden;
  }

  .nav-brand {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.4px;
    transition: color 0.3s;
    white-space: nowrap;
  }

  .nav-divider {
    width: 1px;
    height: 18px;
    background: var(--nav-border);
    margin: 0 2px;
    flex-shrink: 0;
  }

  .nav-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .nav-back-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--toggle-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--text-secondary);
    font-size: 12.5px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    -webkit-tap-highlight-color: transparent;
  }
  .nav-back-btn:hover {
    background: var(--card-hover-bg);
    color: var(--text-primary);
  }

  .theme-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .toggle-icon { font-size: 14px; line-height: 1; }
  .toggle-track {
    width: 44px;
    height: 26px;
    border-radius: 13px;
    background: var(--toggle-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    position: relative;
    transition: all 0.3s;
  }
  .toggle-knob {
    width: 20px;
    height: 20px;
    border-radius: 10px;
    background: var(--toggle-knob);
    position: absolute;
    top: 2px;
    left: 3px;
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    box-shadow: 0 1px 4px rgba(0,0,0,0.15);
  }
  [data-theme="dark"] .toggle-knob { left: 21px; background: #f5f5f7; }

  /* ===== MAIN ===== */
  .container {
    max-width: 860px;
    margin: 0 auto;
    padding: 36px 24px 72px;
  }

  /* ===== BANNER ===== */
  .alert-banner {
    background: linear-gradient(135deg, #ff9500, #ff6b00);
    border-radius: 16px;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 36px;
    box-shadow: 0 4px 24px rgba(255,149,0,0.3);
    flex-wrap: wrap;
  }
  [data-theme="dark"] .alert-banner {
    background: linear-gradient(135deg, #b86800, #9c4200);
    box-shadow: 0 4px 24px rgba(255,149,0,0.15);
  }
  .alert-banner-text {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
  }
  .alert-banner-sub {
    font-size: 13px;
    font-weight: 400;
    color: rgba(255,255,255,0.85);
    margin-top: 3px;
  }
  .download-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    background: rgba(255,255,255,0.2);
    border: 1.5px solid rgba(255,255,255,0.5);
    border-radius: 10px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
  }
  .download-btn:hover {
    background: rgba(255,255,255,0.3);
    border-color: rgba(255,255,255,0.7);
  }

  /* ===== HERO ===== */
  .hero {
    text-align: center;
    padding: 8px 0 36px;
  }
  .hero h1 {
    font-size: 38px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1.2px;
    margin-bottom: 8px;
    transition: color 0.3s;
  }
  .hero p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.5;
    transition: color 0.3s;
  }

  /* ===== EBENEN-OVERVIEW ===== */
  .levels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 36px;
  }
  @media (max-width: 600px) {
    .levels-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 28px; }
  }

  .level-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 20px 18px;
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    box-shadow: var(--card-shadow);
    border-top: 3px solid transparent;
    transition: background 0.3s, box-shadow 0.2s;
  }
  .level-card.green  { border-top-color: #30d158; }
  .level-card.orange { border-top-color: #ff9500; }
  .level-card.red    { border-top-color: #ff3b30; }

  .level-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 6px;
    margin-bottom: 10px;
  }
  .level-badge.green  { background: rgba(48,209,88,0.12); color: #1a9e3f; }
  .level-badge.orange { background: rgba(255,149,0,0.12); color: #b86800; }
  .level-badge.red    { background: rgba(255,59,48,0.12); color: #cc2f26; }
  [data-theme="dark"] .level-badge.green  { background: rgba(48,209,88,0.15); color: #30d158; }
  [data-theme="dark"] .level-badge.orange { background: rgba(255,149,0,0.15); color: #ff9500; }
  [data-theme="dark"] .level-badge.red    { background: rgba(255,59,48,0.15); color: #ff453a; }

  .level-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    transition: color 0.3s;
  }
  .level-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    transition: color 0.3s;
  }

  /* ===== SECTIONS (details) ===== */
  .section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    box-shadow: var(--card-shadow);
    margin-bottom: 16px;
    overflow: hidden;
    transition: background 0.3s;
  }
  .section.border-red    { border-left: 4px solid #ff3b30; }
  .section.border-orange { border-left: 4px solid #ff9500; }
  .section.border-blue   { border-left: 4px solid #04b3d6; }

  .section summary {
    list-style: none;
    padding: 18px 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    transition: background 0.2s;
  }
  .section summary::-webkit-details-marker { display: none; }
  .section summary:hover { background: var(--card-hover-bg); }

  .section-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
  }
  .section-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 5px;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .label-red    { background: rgba(255,59,48,0.1);  color: #cc2f26; }
  .label-orange { background: rgba(255,149,0,0.1);  color: #b86800; }
  .label-blue   { background: rgba(4,179,214,0.1);  color: #04b3d6; }
  [data-theme="dark"] .label-red    { background: rgba(255,59,48,0.15);  color: #ff453a; }
  [data-theme="dark"] .label-orange { background: rgba(255,149,0,0.15);  color: #ff9500; }
  [data-theme="dark"] .label-blue   { background: rgba(4,179,214,0.15);  color: #2cc5e4; }

  .section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .section-chevron {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: var(--toggle-bg);
    color: var(--text-tertiary);
    font-size: 12px;
    flex-shrink: 0;
    transition: transform 0.3s, background 0.2s;
  }
  .section[open] .section-chevron { transform: rotate(180deg); }

  .section-body {
    padding: 4px 22px 22px;
    border-top: 1px solid var(--card-border);
  }

  /* ===== CONTENT ELEMENTS ===== */
  .step {
    display: flex;
    gap: 14px;
    margin-bottom: 20px;
    align-items: flex-start;
  }
  .step:last-child { margin-bottom: 0; }
  .step-num {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    background: var(--badge-bg);
    color: var(--badge-color);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .step-content { flex: 1; min-width: 0; }
  .step-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    transition: color 0.3s;
  }
  .step-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
    transition: color 0.3s;
  }

  h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 20px 0 10px;
    transition: color 0.3s;
  }
  h3:first-child { margin-top: 0; }

  p.desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 10px;
    transition: color 0.3s;
  }

  /* Code Blocks */
  .code-wrap {
    position: relative;
    margin: 8px 0;
  }
  pre {
    background: rgba(0,0,0,0.05);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 12px 48px 12px 14px;
    overflow-x: auto;
    font-size: 12.5px;
    line-height: 1.6;
  }
  [data-theme="dark"] pre {
    background: rgba(0,0,0,0.35);
  }
  code {
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', Menlo, monospace;
    color: var(--text-primary);
    transition: color 0.3s;
  }
  .copy-btn {
    position: absolute;
    top: 7px;
    right: 7px;
    padding: 3px 10px;
    background: var(--toggle-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .copy-btn:hover {
    background: var(--card-hover-bg);
    color: var(--text-primary);
  }

  /* Warning box */
  .warning-box {
    background: rgba(255,59,48,0.08);
    border: 1px solid rgba(255,59,48,0.2);
    border-radius: 10px;
    padding: 12px 16px;
    margin: 10px 0;
    font-size: 13px;
    color: #cc2f26;
    line-height: 1.5;
    font-weight: 500;
  }
  [data-theme="dark"] .warning-box {
    background: rgba(255,59,48,0.1);
    border-color: rgba(255,59,48,0.25);
    color: #ff453a;
  }

  .info-box {
    background: rgba(4,179,214,0.07);
    border: 1px solid rgba(4,179,214,0.2);
    border-radius: 10px;
    padding: 12px 16px;
    margin: 10px 0;
    font-size: 13px;
    color: #0386a0;
    line-height: 1.5;
  }
  [data-theme="dark"] .info-box {
    background: rgba(4,179,214,0.1);
    border-color: rgba(4,179,214,0.25);
    color: #2cc5e4;
  }

  .sub-cases {
    margin-top: 14px;
    padding-left: 0;
  }
  .sub-case {
    margin-bottom: 14px;
  }
  .sub-case-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    transition: color 0.3s;
  }

  /* Tables */
  .ref-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-bottom: 20px;
  }
  .ref-table th {
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--text-tertiary);
    padding: 8px 10px;
    border-bottom: 1px solid var(--card-border);
    transition: color 0.3s;
  }
  .ref-table td {
    padding: 9px 10px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    vertical-align: top;
    transition: color 0.3s;
    line-height: 1.5;
  }
  [data-theme="dark"] .ref-table td {
    border-bottom-color: rgba(255,255,255,0.04);
  }
  .ref-table td:first-child {
    font-family: 'SF Mono', 'Fira Code', 'Roboto Mono', monospace;
    font-size: 12px;
    color: var(--badge-color);
    white-space: nowrap;
  }
  .ref-table tr:last-child td { border-bottom: none; }

  /* ===== PRINT ===== */
  @media print {
    nav { display: none !important; }
    .alert-banner { display: none !important; }
    .copy-btn { display: none !important; }
    body {
      background: #fff !important;
      animation: none !important;
    }
    .container { padding: 16px !important; max-width: 100% !important; }
    .section {
      background: #fff !important;
      border: 1px solid #ccc !important;
      box-shadow: none !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
      break-inside: avoid;
      page-break-before: always;
    }
    .section:first-of-type { page-break-before: auto; }
    details, details[open] { display: block !important; }
    details > summary ~ * { display: block !important; }
    .section-body { display: block !important; border-top: 1px solid #ccc !important; }
    pre {
      background: #f5f5f5 !important;
      border: 1px solid #ccc !important;
      white-space: pre-wrap;
    }
    code { color: #1c1c1e !important; }
    .level-card {
      background: #fff !important;
      box-shadow: none !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
      border: 1px solid #ccc !important;
    }
    .hero h1, .section-title, .step-title, h3, code, .ref-table td {
      color: #1c1c1e !important;
    }
    .hero p, .step-desc, p.desc, .ref-table th, .sub-case-title {
      color: #444 !important;
    }
    .warning-box { background: #fff0ef !important; border-color: #f00 !important; color: #c00 !important; }
    .info-box { background: #f0fafd !important; border-color: #04b3d6 !important; color: #0386a0 !important; }
  }