/* Reset & Basis */
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #121212;
      color: #e0e0e0;
      line-height: 1.6;
      transition: background-color 0.3s, color 0.3s;
    }
    a {
      color: #90caf9;
      text-decoration: none;
      transition: color 0.3s;
    }
    a:hover, a:focus {
      color: #64b5f6;
      text-decoration: underline;
    }

    /* Container */
    .container {
      max-width: 960px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Header */
    header {
      background-color: #1e88e5;
      color: white;
      padding: 20px 0;
      box-shadow: 0 2px 10px rgba(0,0,0,0.7);
    }
    header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    header h1 {
      margin: 0;
      font-size: 1.8rem;
      font-weight: 700;
      letter-spacing: 2px;
      color: #e3f2fd;
    }
    nav ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      gap: 20px;
      font-weight: 600;
      flex-wrap: wrap;
    }
    nav ul li {
      margin: 0;
    }
    nav ul li a {
      color: #e3f2fd;
      font-size: 1rem;
    }
    nav ul li a:hover, nav ul li a:focus {
      color: #a6c8ff;
    }

    /* Hero */
    .hero {
      background: url('https://images.unsplash.com/photo-1602059443491-f31bcd365837?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
      color: white;
      padding: 100px 20px 120px 20px;
      text-align: center;
      position: relative;
      overflow: visible;
      border-radius: 0 0 40px 40px;
      box-shadow: inset 0 0 0 1000px rgba(18, 18, 18, 0.7);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
      margin: 0 auto;
    }
    .hero h2 {
      font-size: 2.8rem;
      margin-bottom: 20px;
      line-height: 1.1;
      text-shadow: 2px 2px 6px rgba(0,0,0,0.8);
    }
    .hero p {
      font-size: 1.25rem;
      margin-bottom: 30px;
      font-weight: 600;
      line-height: 1.4;
      text-shadow: 1px 1px 4px rgba(0,0,0,0.7);
    }
    .hero p:last-child {
      font-size: 1rem;
      font-weight: 400;
      opacity: 0.8;
    }
    .btn-primary {
      background-color: #ffea00;
      color: #121212;
      padding: 15px 35px;
      font-size: 1.1rem;
      font-weight: 700;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: background-color 0.3s ease, color 0.3s ease;
      box-shadow: 0 5px 15px rgba(255, 234, 0, 0.8);
      text-transform: uppercase;
      user-select: none;
      filter: drop-shadow(0 1px 1px rgba(0,0,0,0.3));
    }
    .btn-primary:hover, .btn-primary:focus {
      background-color: #c7b800;
      color: #121212;
      box-shadow: 0 8px 25px rgba(199, 184, 0, 0.9);
      outline: none;
    }

    /* Sections */
    section {
      padding: 60px 20px;
      background-color: #1f1f1f;
      margin-bottom: 30px;
      border-radius: 10px;
      box-shadow: 0 0 20px rgb(0 0 0 / 0.7);
      transition: background-color 0.3s ease;
    }
    section h3 {
      text-align: center;
      font-size: 2rem;
      margin-bottom: 40px;
      color: #90caf9;
      text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
    }

    /* Features */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
      gap: 30px;
      max-width: 900px;
      margin: 0 auto;
      padding-bottom: 10px;
    }
    .feature-box {
      background: #263238;
      border-radius: 12px;
      padding: 25px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.6);
      transition: transform 0.3s ease;
    }
    .feature-box:hover, .feature-box:focus-within {
      transform: translateY(-8px);
      box-shadow: 0 10px 35px rgba(41, 121, 255, 0.7);
      outline: none;
    }
    .feature-box h4 {
      margin-top: 0;
      margin-bottom: 12px;
      font-size: 1.25rem;
      color: #82b1ff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-box p {
      font-size: 1rem;
      color: #ccc;
      line-height: 1.4;
    }

    /* Demo */
    .demo-steps {
      max-width: 700px;
      margin: 0 auto;
      font-size: 1.1rem;
      color: #ddd;
      padding-bottom: 10px;
      line-height: 1.5;
    }
    .demo-steps ol {
      padding-left: 20px;
    }
    .demo-steps li {
      margin-bottom: 18px;
    }

    /* FAQ */
    .faq-list {
      max-width: 700px;
      margin: 0 auto;
      padding-bottom: 10px;
    }
    .faq-item {
      margin-bottom: 25px;
    }
    .faq-question {
      font-weight: 700;
      color: #82b1ff;
      cursor: pointer;
      position: relative;
      padding-right: 20px;
      user-select: none;
    }
    .faq-question::after {
      content: '+';
      position: absolute;
      right: 0;
      top: 0;
      font-size: 1.3rem;
      color: #82b1ff;
      transition: transform 0.3s ease;
    }
    .faq-question.active::after {
      content: '–';
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: #ccc;
      padding-left: 10px;
      margin-top: 5px;
    }
    .faq-answer.show {
      max-height: 300px;
      margin-top: 10px;
    }

    /* App & Website Section extras */
    .app-web-section {
      max-width: 700px;
      margin: 0 auto 30px auto;
      padding: 20px;
      background: #263238;
      border-radius: 12px;
      box-shadow: 0 6px 15px rgba(41, 121, 255, 0.25);
      text-align: center;
      color: #90caf9;
    }
    .app-web-section h4 {
      margin-bottom: 15px;
      font-size: 1.5rem;
    }
    .app-web-section p {
      font-size: 1.1rem;
      margin-bottom: 25px;
      line-height: 1.4;
    }
    .app-web-buttons {
      display: flex;
      justify-content: center;
      gap: 25px;
      flex-wrap: wrap;
    }
    .app-web-buttons a {
      background-color: #1e88e5;
      color: white;
      padding: 15px 30px;
      font-weight: 700;
      border-radius: 40px;
      font-size: 1rem;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(30, 136, 229, 0.7);
      transition: background-color 0.3s ease;
      user-select: none;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .app-web-buttons a svg {
      width: 20px;
      height: 20px;
      fill: white;
    }
    .app-web-buttons a:hover, .app-web-buttons a:focus {
      background-color: #1565c0;
      box-shadow: 0 6px 18px rgba(21, 101, 192, 0.9);
      outline: none;
    }

    /* Kontakt Button Anpassung */
    #kontakt p {
      font-size: 1.2rem;
      margin-bottom: 30px;
      line-height: 1.4;
      color: #ddd;
    }
    #kontakt button {
      padding: 22px 50px;
      font-size: 1.3rem;
      cursor: pointer;
      user-select: none;
      background-color: #ffea00;
      color: #121212;
      border: none;
      border-radius: 50px;
      box-shadow: 0 5px 15px rgba(255, 234, 0, 0.8);
      transition: background-color 0.3s ease;
      filter: drop-shadow(0 1px 1px rgba(0,0,0,0.3));
    }
    #kontakt button:hover, #kontakt button:focus {
      background-color: #c7b800;
      outline: none;
      box-shadow: 0 8px 25px rgba(199, 184, 0, 0.9);
    }

    /* Footer */
    footer {
      background-color: #1e88e5;
      color: white;
      padding: 20px 0;
      text-align: center;
      font-size: 0.9rem;
      box-shadow: inset 0 2px 5px rgba(0,0,0,0.4);
    }

    /* Responsive */
    @media (max-width: 800px) {
      header .container {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
      }
      nav ul {
        flex-direction: column;
        gap: 12px;
        width: 100%;
      }
      nav ul li a {
        font-size: 1.1rem;
      }
      /* Hero kompakter */
      .hero {
        padding: 60px 15px 80px 15px;
      }
      .hero h2 {
        font-size: 2.2rem;
      }
      .hero p {
        font-size: 1.1rem;
      }
      .btn-primary {
        padding: 18px 40px;
        font-size: 1.2rem;
      }
      /* Features: einspaltig */
      .features-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
        max-width: 100%;
      }
      .feature-box {
        padding: 30px 25px;
        font-size: 1.1rem;
      }
      /* Demo Liste größer und luftiger */
      .demo-steps ol {
        padding-left: 25px;
        font-size: 1.15rem;
        line-height: 1.6;
      }
      /* FAQ */
      .faq-list {
        padding-bottom: 15px;
      }
      .faq-question {
        font-size: 1.15rem;
        padding-right: 25px;
        line-height: 1.25;
      }
      .faq-answer {
        font-size: 1.05rem;
        line-height: 1.5;
        padding-left: 15px;
      }
      /* Kontakt Section */
      #kontakt p {
        font-size: 1.3rem;
      }
      #kontakt button {
        padding: 22px 50px;
        font-size: 1.3rem;
      }
      /* App-Web Buttons flex direction */
      .app-web-buttons {
        flex-direction: column;
        gap: 15px;
      }
      .app-web-buttons a {
        justify-content: center;
        padding: 18px 0;
        font-size: 1.3rem;
      }
    }
    @media (max-width: 400px) {
      .hero h2 {
        font-size: 1.8rem;
      }
      .btn-primary {
        padding: 16px 30px;
        font-size: 1.1rem;
      }
      nav ul li a {
        font-size: 1rem;
      }
    }

    nav ul {
    display: flex;
    list-style-type: none;
    margin: 0;
    padding: 0;
  }

  .hamburger {
    display: none;
    font-size: 2rem;
    cursor: pointer;
  }

  /* Responsive styles */
  @media (max-width: 800px) {
    nav ul {
      display: none;
      flex-direction: column;
      background-color: #000000;
      position: absolute;
      top: 60px; /* Höhe des Headers anpassen */
      right: 10px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.3);
      border-radius: 5px;
      width: 200px;
      padding: 10px 0;
      z-index: 10;
    }

    nav ul.show {
      display: flex;
    }

    .hamburger {
      display: block;
    }
  }
  nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .hamburger {
    display: none;
  }

  @media (max-width: 800px) {
    .hamburger {
      display: block;
    }

    nav ul {
      display: none;
      flex-direction: column;
      position: absolute;
      top: 100%; /* Direkt unterhalb des Hamburger-Icons */
      left: 0;   /* Startet links bündig zum Icon */
      background: rgb(0, 0, 0);
      box-shadow: 0 2px 5px rgba(0,0,0,0.3);
      border-radius: 5px;
      width: 200px;
      padding: 10px 0;
      z-index: 10;
    }

    nav ul.show {
      display: flex;
    }
  }