:root {
      --blue: #1A8FC4;
      --blue-dark: #157BAA;
      --gray-header: #5A5A5A;
      --light-gray: #F4F4F4;
      --white: #FFFFFF;
      --text-dark: #f3f5f9; /* Dark-Theme: Überschriften hell (war #2D2D2D = dunkel auf dunkel) */
      --text-body: #b9c0cc;
    }

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

    body {
      font-family: 'Open Sans', sans-serif;
      background: var(--light-gray);
      color: var(--text-body);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    h1, h2, h3, h4, h5, h6 {
      font-family: 'Montserrat', sans-serif;
    }

    /* ── Header ── */
    .app-header {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 12px 24px;
      background: var(--white);
      border-bottom: 3px solid var(--blue);
    }

    .app-header img {
      max-height: 50px;
      width: auto;
    }

    .app-header h1 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-dark);
    }

    .header-spacer { flex: 1; }

    .settings-btn {
      background: none;
      border: none;
      color: var(--gray-header);
      cursor: pointer;
      padding: 6px;
      border-radius: 6px;
      transition: background 0.2s, color 0.2s;
    }
    .settings-btn:hover { background: var(--light-gray); color: var(--blue); }

    /* ── Azure Hint Banner ── */
    .azure-hint {
      background: #FFF3CD;
      color: #856404;
      text-align: center;
      padding: 8px 16px;
      font-size: 0.9rem;
      font-family: 'Open Sans', sans-serif;
    }
    .azure-hint a { color: var(--blue); font-weight: 600; }
    .azure-hint.hidden { display: none; }

    /* ── Settings Modal ── */
    .settings-modal-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.5);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 10000;
    }
    .settings-modal-overlay.hidden { display: none; }
    .settings-modal {
      background: white;
      border-radius: 12px;
      padding: 28px 24px;
      width: 90%;
      max-width: 460px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    }
    .settings-modal h3 {
      font-family: 'Montserrat', sans-serif;
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--text-dark);
    }
    .settings-desc {
      font-size: 0.85rem;
      color: var(--text-body);
      margin-bottom: 16px;
    }
    .settings-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 4px;
      color: var(--text-dark);
    }
    .settings-input {
      display: block;
      width: 100%;
      padding: 10px 12px;
      border: 1px solid #ccc;
      border-radius: 8px;
      font-size: 0.95rem;
      font-family: 'Open Sans', sans-serif;
      margin-bottom: 12px;
    }
    .settings-input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 2px rgba(26,143,196,0.2); }
    .settings-actions {
      display: flex;
      gap: 12px;
      justify-content: flex-end;
      margin-top: 8px;
    }

    /* ── Stepper ── */
    .stepper {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px 16px;
      background: var(--white);
      margin: 0;
    }

    .stepper-step {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .stepper-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: 'Montserrat', sans-serif;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
      transition: background 0.3s, color 0.3s;
    }

    .stepper-label {
      font-family: 'Montserrat', sans-serif;
      font-size: 0.85rem;
      font-weight: 600;
      white-space: nowrap;
      transition: color 0.3s;
    }

    .stepper-line {
      width: 40px;
      height: 3px;
      margin: 0 8px;
      border-radius: 2px;
      flex-shrink: 0;
      transition: background 0.3s;
    }

    /* Stepper states */
    .stepper-step.active .stepper-circle {
      background: var(--blue);
      color: var(--white);
    }
    .stepper-step.active .stepper-label {
      color: var(--blue);
    }

    .stepper-step.completed .stepper-circle {
      background: var(--blue);
      color: var(--white);
    }
    .stepper-step.completed .stepper-label {
      color: var(--gray-header);
    }

    .stepper-step.inactive .stepper-circle {
      background: #C4C4C4;
      color: var(--white);
    }
    .stepper-step.inactive .stepper-label {
      color: #C4C4C4;
    }

    .stepper-line.completed {
      background: var(--blue);
    }
    .stepper-line.inactive {
      background: #C4C4C4;
    }

    /* ── Step Containers ── */
    .step-container {
      display: none;
      flex: 1;
      padding: 24px;
      max-width: 800px;
      width: 100%;
      margin: 0 auto;
    }

    .step-container.visible {
      display: block;
    }

    /* ── Navigation Footer ── */
    .nav-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 24px;
      background: var(--white);
      border-top: 1px solid #E0E0E0;
      margin-top: auto;
    }

    .nav-footer .spacer {
      flex: 1;
    }

    .btn {
      font-family: 'Montserrat', sans-serif;
      font-weight: 600;
      font-size: 1rem;
      padding: 12px 32px;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: background 0.2s, opacity 0.2s;
    }

    .btn-primary {
      background: var(--blue);
      color: var(--white);
    }
    .btn-primary:hover {
      background: var(--blue-dark);
    }
    .btn-primary:active {
      opacity: 0.85;
    }
    .btn-primary:disabled {
      background: #C4C4C4;
      cursor: not-allowed;
    }

    .btn-secondary {
      background: transparent;
      color: var(--blue);
      border: 2px solid var(--blue);
    }
    .btn-secondary:hover {
      background: rgba(26, 143, 196, 0.08);
    }

    .btn.hidden {
      visibility: hidden;
      pointer-events: none;
    }

    /* ── Loading Overlay ── */
    .loading-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.6);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      z-index: 9999;
    }
    .loading-overlay.hidden { display: none; }
    .loading-spinner {
      width: 48px; height: 48px;
      border: 5px solid rgba(255,255,255,0.3);
      border-top-color: var(--blue);
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
    }
    .loading-overlay p {
      color: white;
      font-family: 'Montserrat', sans-serif;
      font-weight: 600;
      font-size: 1.1rem;
      margin-top: 16px;
    }
    @keyframes spin {
      to { transform: rotate(360deg); }
    }

    /* ── Upload Zone ── */
    .upload-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }

    .upload-sides {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 0;
    }
    .upload-side-label {
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--blue);
      margin-bottom: 8px;
      text-align: center;
    }
    .upload-side-hint {
      font-size: 0.75rem;
      font-weight: 400;
      color: var(--text-body);
      text-transform: none;
      letter-spacing: 0;
    }
    .upload-sides .drop-zone {
      padding: 20px 12px;
    }
    .upload-sides .drop-zone-icon svg {
      width: 36px;
      height: 36px;
    }
    .upload-sides .drop-zone-text {
      font-size: 0.85rem;
      margin-bottom: 10px;
    }
    .upload-sides .drop-zone-buttons {
      gap: 8px;
    }
    .upload-sides .drop-zone-buttons .btn {
      font-size: 0.8rem;
      padding: 7px 12px;
    }
    .upload-sides .upload-preview img {
      max-height: 140px;
    }
    @media (max-width: 600px) {
      .upload-sides { grid-template-columns: 1fr; }
    }

    .drop-zone {
      border: 2px dashed var(--blue);
      border-radius: 12px;
      padding: 40px 24px;
      text-align: center;
      cursor: pointer;
      transition: background 0.2s, border-color 0.2s;
      position: relative;
    }
    .drop-zone.dragover {
      background: rgba(26,143,196,0.08);
      border-color: var(--blue-dark);
    }
    .drop-zone-icon {
      margin-bottom: 12px;
    }
    .drop-zone-text {
      font-size: 1rem;
      color: var(--text-body);
      margin-bottom: 16px;
    }
    .drop-zone-buttons {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .drop-zone-buttons .btn {
      padding: 10px 24px;
      font-size: 0.9rem;
    }

    .upload-preview {
      display: none;
      margin-top: 20px;
      text-align: center;
    }
    .upload-preview.visible { display: block; }
    .upload-preview img {
      max-width: 100%;
      max-height: 300px;
      border-radius: 8px;
      border: 1px solid #ddd;
    }
    .upload-preview .change-link {
      display: inline-block;
      margin-top: 10px;
      color: var(--blue);
      cursor: pointer;
      font-weight: 600;
      text-decoration: underline;
    }

    .ocr-status {
      margin-top: 16px;
      padding: 12px 16px;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      display: none;
    }
    .ocr-status.visible { display: flex; align-items: center; gap: 8px; }
    .ocr-status.loading {
      background: #FFF3CD;
      color: #856404;
    }
    .ocr-status.success {
      background: #D4EDDA;
      color: #155724;
    }
    .ocr-status.error {
      background: #F8D7DA;
      color: #721C24;
    }

    /* ── Form Styles (Step 3) ── */
    .info-banner {
      background: var(--blue);
      color: white;
      padding: 14px 20px;
      border-radius: 8px;
      margin-bottom: 24px;
      font-size: 0.95rem;
      line-height: 1.5;
    }

    .form-section {
      background: var(--white);
      border-radius: 12px;
      padding: 20px 24px;
      margin-bottom: 20px;
      box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    }
    .form-section h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--light-gray);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 4px;
    }
    .form-row.single {
      grid-template-columns: 1fr;
    }

    .form-group {
      margin-bottom: 12px;
    }
    .form-group label {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-group label .required {
      color: #E53E3E;
      font-weight: 700;
    }
    .badge-erkannt {
      display: inline-block;
      background: var(--blue);
      color: white;
      font-size: 0.65rem;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 4px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #D0D0D0;
      border-radius: 8px;
      font-family: 'Open Sans', sans-serif;
      font-size: 0.95rem;
      color: var(--text-dark);
      transition: border-color 0.2s;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(26,143,196,0.15);
    }
    .form-group input.invalid {
      border-color: #E53E3E;
    }

    .radio-group {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .radio-group label {
      font-weight: 400;
      font-size: 0.95rem;
      cursor: pointer;
    }
    .radio-group input[type="radio"] {
      width: auto;
      margin-right: 8px;
      accent-color: var(--blue);
    }
    .kaution-detail {
      display: none;
      margin-top: 10px;
      padding-left: 28px;
    }
    .kaution-detail.visible { display: block; }
    .kaution-detail .form-row {
      margin-bottom: 0;
    }

    /* ── Fahrzeugauswahl ── */
    .form-section-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--light-gray);
    }
    .form-section-header h3 {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }
    .btn-inventar {
      background: none;
      border: 1px solid var(--blue);
      color: var(--blue);
      font-family: 'Montserrat', sans-serif;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: 6px;
      cursor: pointer;
      transition: all 0.2s;
      white-space: nowrap;
    }
    .btn-inventar:hover {
      background: var(--blue);
      color: white;
    }
    .fahrzeug-select {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #D0D0D0;
      border-radius: 8px;
      font-family: 'Open Sans', sans-serif;
      font-size: 0.95rem;
      color: var(--text-dark);
      background: white;
      cursor: pointer;
      transition: border-color 0.2s;
      margin-bottom: 16px;
    }
    .fahrzeug-select:focus {
      outline: none;
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(26,143,196,0.15);
    }
    .fahrzeug-details {
      background: var(--light-gray);
      border-radius: 8px;
      padding: 14px 18px;
      margin-bottom: 12px;
    }
    .fahrzeug-details .detail-row {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      font-size: 0.9rem;
    }
    .fahrzeug-details .detail-label {
      font-weight: 600;
      color: var(--text-dark);
    }
    .fahrzeug-details .detail-value {
      color: var(--text-body);
    }

    /* ── Inventar Modal ── */
    .inventar-modal-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.5);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 10000;
    }
    .inventar-modal-overlay.hidden { display: none; }
    .inventar-modal {
      background: white;
      border-radius: 12px;
      padding: 28px 24px;
      width: 95%;
      max-width: 600px;
      max-height: 85vh;
      box-shadow: 0 8px 32px rgba(0,0,0,0.2);
      display: flex;
      flex-direction: column;
    }
    .inventar-modal h3 {
      font-family: 'Montserrat', sans-serif;
      font-size: 1.15rem;
      margin-bottom: 16px;
      color: var(--text-dark);
    }
    .inventar-list {
      flex: 1;
      overflow-y: auto;
      margin-bottom: 16px;
      max-height: 50vh;
    }
    .inventar-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 12px;
      border: 1px solid #E8E8E8;
      border-radius: 8px;
      margin-bottom: 8px;
      transition: background 0.15s;
    }
    .inventar-item:hover {
      background: var(--light-gray);
    }
    .inventar-item-info {
      flex: 1;
      min-width: 0;
    }
    .inventar-item-name {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--text-dark);
    }
    .inventar-item-vin {
      font-size: 0.78rem;
      color: var(--text-body);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .inventar-item-actions {
      display: flex;
      gap: 6px;
      flex-shrink: 0;
    }
    .btn-icon {
      background: none;
      border: 1px solid #D0D0D0;
      border-radius: 6px;
      padding: 6px 8px;
      cursor: pointer;
      font-size: 0.8rem;
      transition: all 0.15s;
      color: var(--text-body);
    }
    .btn-icon:hover {
      border-color: var(--blue);
      color: var(--blue);
    }
    .btn-icon.delete:hover {
      border-color: #E53E3E;
      color: #E53E3E;
    }

    .inventar-add-form {
      border-top: 1px solid #E8E8E8;
      padding-top: 16px;
    }
    .inventar-add-form h4 {
      font-family: 'Montserrat', sans-serif;
      font-size: 0.9rem;
      margin-bottom: 12px;
      color: var(--text-dark);
    }
    .inventar-form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-bottom: 10px;
    }
    .inventar-form-row.single {
      grid-template-columns: 1fr;
    }
    .inventar-form-row input {
      width: 100%;
      padding: 8px 12px;
      border: 1px solid #D0D0D0;
      border-radius: 8px;
      font-family: 'Open Sans', sans-serif;
      font-size: 0.9rem;
      color: var(--text-dark);
    }
    .inventar-form-row input:focus {
      outline: none;
      border-color: var(--blue);
      box-shadow: 0 0 0 2px rgba(26,143,196,0.15);
    }

    /* ── Step 4: PDF ── */
    .summary-card {
      background: var(--white);
      border-radius: 12px;
      padding: 24px;
      margin-bottom: 24px;
      box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    }
    .summary-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .summary-row {
      display: flex;
      justify-content: space-between;
      padding: 8px 0;
      border-bottom: 1px solid var(--light-gray);
      font-size: 0.95rem;
    }
    .summary-row:last-child { border-bottom: none; }
    .summary-row .label { color: var(--text-body); }
    .summary-row .value { font-weight: 600; color: var(--text-dark); }

    .pdf-actions {
      display: flex;
      flex-direction: column;
      gap: 12px;
      align-items: center;
    }
    .pdf-actions .btn {
      width: 100%;
      max-width: 400px;
      text-align: center;
      padding: 16px 32px;
      font-size: 1.1rem;
    }
    .btn-reset {
      background: transparent;
      color: var(--text-body);
      border: 1px solid #D0D0D0;
    }
    .btn-reset:hover {
      background: var(--light-gray);
    }

    .pdf-preview-wrap {
      margin-bottom: 24px;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 1px 4px rgba(0,0,0,0.10);
      background: var(--white);
      position: relative;
    }
    .pdf-preview-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 12px 16px 8px;
      border-bottom: 1px solid var(--light-gray);
      letter-spacing: 0.03em;
      text-transform: uppercase;
    }
    #pdf-preview-iframe {
      width: 100%;
      height: 560px;
      border: none;
      display: block;
      background: #f0f0f0;
    }
    .pdf-preview-loading {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 560px;
      color: var(--text-body);
      font-size: 0.95rem;
      gap: 10px;
    }
    @media (max-width: 600px) {
      #pdf-preview-iframe { height: 420px; }
    }

    /* ── Responsive ── */
    @media (max-width: 600px) {
      .app-header {
        padding: 10px 16px;
      }
      .app-header h1 {
        font-size: 1.05rem;
      }

      .stepper {
        padding: 16px 8px;
      }
      .stepper-label {
        display: none;
      }
      .stepper-line {
        width: 28px;
        margin: 0 4px;
      }

      .step-container {
        padding: 16px;
      }

      .nav-footer {
        padding: 12px 16px;
      }
      .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
      }

      .drop-zone {
        padding: 24px 16px;
      }
      .drop-zone-buttons {
        flex-direction: column;
        align-items: stretch;
      }
      .drop-zone-buttons .btn {
        width: 100%;
      }

      .form-row {
        grid-template-columns: 1fr;
      }

      .form-section {
        padding: 16px;
      }

      .pdf-actions .btn {
        max-width: 100%;
      }

      .inventar-form-row {
        grid-template-columns: 1fr;
      }

      .inventar-modal {
        width: 95%;
        padding: 20px 16px;
      }
    }