/* === Globale Reset & Variablen === */
    :root {
      --bg-primary: #0f1620;
      --bg-secondary: #1a2330;
      --bg-card: #242e40;
      --text-primary: #e0e6ed;
      --text-secondary: #a0aec0;
      --accent: #5d8af7;
      --accent-hover: #4a70d9;
      --danger: #e53e3e;
      --warning: #dd6b20;
      --success: #38a169;
      --border: #334155;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
      --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.4);
      --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
      --radius: 12px;
      --transition: all 0.3s ease;
    }

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

    body {
      font-family: 'Segoe UI', system-ui, sans-serif;
      background-color: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* === Header & Navigation === */
    header {
      background: rgba(15, 22, 32, 0.95);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 1rem 5%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: white;
      letter-spacing: -0.5px;
    }

    .logo span {
      color: var(--accent);
    }

    /* === Formular-Container === */
    .container {
      max-width: 1000px;
      margin: 2rem auto;
      padding: 0 1rem;
    }

    .header {
      text-align: center;
      margin-bottom: 2rem;
    }

    .header h1 {
      font-size: 2.2rem;
      margin-bottom: 0.5rem;
      color: white;
    }

    .header p {
      color: var(--text-secondary);
    }

    /* === Fortschrittsbalken === */
    .progress-bar {
      height: 8px;
      background-color: var(--bg-secondary);
      border-radius: 4px;
      margin-bottom: 2rem;
      overflow: hidden;
    }

    .progress-fill {
      height: 100%;
      width: 33.33%;
      background: linear-gradient(135deg, var(--accent), var(--accent-hover));
      border-radius: 4px;
      transition: var(--transition);
    }

    /* === Schritt-Indikator === */
    .step-indicator {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .step {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background-color: var(--bg-secondary);
      transition: var(--transition);
    }

    .step.active {
      background-color: var(--accent);
      transform: scale(1.2);
    }

    /* === Formular-Sektionen === */
    .form-container {
      background-color: var(--bg-card);
      border-radius: var(--radius);
      padding: 2rem;
      box-shadow: var(--shadow-md);
    }

    .form-section {
      display: none;
    }

    .form-section.active {
      display: block;
      animation: fadeIn 0.5s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .section-header {
      display: flex;
      align-items: center;
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--border);
    }

    .section-icon {
      font-size: 1.8rem;
      margin-right: 1rem;
      color: var(--accent);
    }

    .section-title {
      font-size: 1.5rem;
      color: white;
    }

    .form-info {
      background-color: rgba(93, 138, 247, 0.1);
      border-radius: var(--radius);
      padding: 0.8rem 1rem;
      margin-bottom: 1.5rem;
      color: var(--accent);
      display: flex;
      align-items: center;
    }

    .form-info i {
      margin-right: 0.5rem;
    }

    /* === Formular-Grid === */
    .form-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .col-2 { grid-column: span 2; }
    .col-4 { grid-column: span 4; }
    .col-5 { grid-column: span 5; }
    .col-6 { grid-column: span 6; }
    .col-8 { grid-column: span 8; }

    @media (max-width: 768px) {
      .col-2, .col-4, .col-5, .col-6, .col-8 {
        grid-column: span 12;
      }
    }

    /* === Formular-Gruppen === */
    .form-group {
      margin-bottom: 1rem;
    }

    label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 500;
    }

    label.required::after {
      content: '*';
      color: var(--danger);
      margin-left: 0.3rem;
    }

    input, select {
      width: 100%;
      padding: 0.8rem 1rem;
      background-color: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      color: var(--text-primary);
      font-family: inherit;
      transition: var(--transition);
    }

    input:focus, select:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(93, 138, 247, 0.2);
    }

    input.error, select.error {
      border-color: var(--danger);
    }

    .error-message {
      color: var(--danger);
      font-size: 0.85rem;
      margin-top: 0.3rem;
      display: none;
    }

    /* === Bereichs-Auswahl === */
    .areas-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .area-card {
      background-color: var(--bg-secondary);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
    }

    .area-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
    }

    .area-card.checked {
      border: 2px solid var(--accent);
    }

    .area-card.disabled {
      opacity: 0.8;
      cursor: not-allowed;
    }

    .area-header {
      background-color: rgba(36, 46, 64, 0.8);
      padding: 1rem;
      font-weight: 600;
      border-bottom: 1px solid var(--border);
    }

    .area-body {
      padding: 1rem;
    }

    .area-description {
      color: var(--text-secondary);
      margin-bottom: 1rem;
      font-size: 0.9rem;
    }

    .checkbox-container {
      display: flex;
      align-items: center;
      margin-bottom: 1rem;
    }

    .checkbox-container input[type="checkbox"] {
      width: auto;
      margin-right: 0.5rem;
    }

    .area-questions {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .area-questions ul {
      padding-left: 1.2rem;
      margin-top: 0.5rem;
    }

    .area-questions li {
      margin-bottom: 0.3rem;
    }

    /* === Buttons === */
    .navigation-buttons {
      display: flex;
      justify-content: space-between;
      margin-top: 2rem;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.8rem 1.5rem;
      border-radius: var(--radius);
      font-weight: 500;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      font-family: inherit;
    }

    .btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent), var(--accent-hover));
      color: white;
      box-shadow: var(--shadow-sm);
    }

    .btn-primary:hover:not(:disabled) {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-outline {
      background: transparent;
      color: var(--text-secondary);
      border: 1px solid var(--border);
    }

    .btn-outline:hover {
      color: var(--text-primary);
      border-color: var(--text-primary);
    }

    .btn i {
      margin: 0 0.3rem;
    }

    /* === Animationen === */
    .shake {
      animation: shake 0.5s ease;
    }

    @keyframes shake {
      0%, 100% { transform: translateX(0); }
      20%, 60% { transform: translateX(-5px); }
      40%, 80% { transform: translateX(5px); }
    }

    /* === Responsive Anpassungen === */
    @media (max-width: 768px) {
      .container {
        margin: 1rem auto;
        padding: 0 0.5rem;
      }
      
      .form-container {
        padding: 1.5rem;
      }
      
      .section-header {
        flex-direction: column;
        text-align: center;
      }
      
      .section-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
      }
      
      .navigation-buttons {
        flex-direction: column;
        gap: 1rem;
      }
      
      .btn {
        width: 100%;
      }
    }